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CN112243053A - Rotating shaft mechanism and mobile terminal - Google Patents

Rotating shaft mechanism and mobile terminal Download PDF

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Publication number
CN112243053A
CN112243053A CN201910647586.3A CN201910647586A CN112243053A CN 112243053 A CN112243053 A CN 112243053A CN 201910647586 A CN201910647586 A CN 201910647586A CN 112243053 A CN112243053 A CN 112243053A
Authority
CN
China
Prior art keywords
connecting rod
shell
middle frame
door panel
damping
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201910647586.3A
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Chinese (zh)
Inventor
吴伟峰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Filing date
Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to CN201910647586.3A priority Critical patent/CN112243053A/en
Publication of CN112243053A publication Critical patent/CN112243053A/en
Pending legal-status Critical Current

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M1/00Substation equipment, e.g. for use by subscribers
    • H04M1/02Constructional features of telephone sets
    • H04M1/0202Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/0206Portable telephones comprising a plurality of mechanically joined movable body parts, e.g. hinged housings
    • H04M1/0208Portable telephones comprising a plurality of mechanically joined movable body parts, e.g. hinged housings characterized by the relative motions of the body parts
    • H04M1/0214Foldable telephones, i.e. with body parts pivoting to an open position around an axis parallel to the plane they define in closed position
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M1/00Substation equipment, e.g. for use by subscribers
    • H04M1/02Constructional features of telephone sets
    • H04M1/0202Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/026Details of the structure or mounting of specific components
    • H04M1/0266Details of the structure or mounting of specific components for a display module assembly
    • H04M1/0268Details of the structure or mounting of specific components for a display module assembly including a flexible display panel

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Telephone Set Structure (AREA)

Abstract

The application provides a rotating shaft mechanism and a mobile terminal, wherein the rotating shaft mechanism comprises a main shaft assembly, the main shaft assembly comprises a hinged middle frame, a middle door plate and a shell support, the middle door plate is lifted relative to the hinged middle frame, the shell support is fixedly connected with a shell of the mobile terminal, and the shell support is rotatably connected with the hinged middle frame through a transmission part and drives the middle door plate to lift; the rotating shaft mechanism further comprises a rotating connecting rod and a side door plate, the rotating connecting rod is respectively rotatably connected with the main shaft assembly, the side door plate is slidably connected with the rotating connecting rod, and the side door plate is rotatably connected with the shell. Above-mentioned pivot mechanism is through adopting driving medium and casing support to link door plant and casing in the middle of with, can drive door plant lift in the middle of the casing pivoted to make when mobile terminal is folding, flexible screen has great space, has improved mobile terminal's folding effect.

Description

Rotating shaft mechanism and mobile terminal
Technical Field
The application relates to the technical field of mobile terminals, in particular to a rotating shaft mechanism and a mobile terminal.
Background
As the flexible folding screen technology is mature day by day, the flexible folding terminal product is a big trend in the future, and the folding terminal product (such as folding mobile phone, folding tablet, folding computer and other electronic devices) needs to meet the requirements of higher reliability, better operation experience and ID appearance, so that the flexible folding terminal product can be accepted by consumers. Taking a folding mobile phone as an example, different from the conventional flip mobile phone, the flexible folding mobile phone has the advantage that the screen is continuously foldable, so that the whole appearance of the product is greatly deformed at the bent part of the middle rotating shaft of the folding mobile phone in order to ensure that the folding screen is not pulled or extruded, and the general structure cannot achieve the large deformation. Therefore, in the flexible folding terminal product, a special hinge needs to be designed at the bending deformation part so as to meet the requirements of the product on overall machine operation experience, appearance, reliability and the like. However, the thickness of the folded hinge bending part adopted in the prior art is larger than that of the whole machine, and the effect of the folded terminal is affected.
Disclosure of Invention
The application provides a rotating shaft mechanism and a mobile terminal, which are used for improving the folding effect of the mobile terminal.
In a first aspect, a hinge mechanism is provided, which is applied to a foldable mobile terminal, the mobile terminal includes two housings, the two housings are rotatably connected by the hinge mechanism, and the mobile terminal further includes a flexible screen fixedly connected to the two housings, the hinge mechanism includes a spindle assembly, which serves as a support member, and includes a hinged middle frame, a middle door plate covering the hinged middle frame and being capable of moving up and down relative to the hinged middle frame, and a housing bracket fixedly connected to each housing; the shell support is fixedly connected with the transmission parts in a one-to-one correspondence mode, the shell support is rotatably connected with the hinged middle frame through the corresponding transmission parts, the shell is linked with the middle door plate through the transmission parts, and the middle door plate is driven to lift through the transmission parts when the shell support rotates. The rotating shaft mechanism further comprises a connecting rod assembly, the rotating connecting rod assembly is used for connecting the side door plate and the shell, the rotating connecting rod assembly comprises two groups of rotating connecting rods which are respectively arranged on two sides of the axis of the hinged middle frame, and each group of rotating connecting rods comprises two rotating connecting rods which are rotatably connected with the hinged middle frame; one end of each rotary connecting rod is rotatably connected with the end part of the hinged middle frame, and the other end of each rotary connecting rod can rotate and slide relative to the shell positioned on the same side; the rotating shaft mechanism further comprises two side door plates, the two side door plates are correspondingly arranged on two sides of the hinged middle frame in a row, and each side door plate is rotatably connected with the shell located on the same side and is in sliding connection with the rotating connecting rod located on the same side. When the shell support is rotated to a first set position, the middle door panel and the two side door panels are used for supporting the flexible screen; when the shell support rotates to a second set position, the middle door panel descends to a set third position and forms a space for accommodating the bent part of the flexible screen together with the two side door panels. In the technical scheme, the middle door plate is linked with the shell through the transmission part and the shell support, the shell can drive the middle door plate to lift when rotating, and therefore the flexible screen has a large space when the mobile terminal is folded.
In a specific possible embodiment, the rotating shaft mechanism further comprises a door plate translational connecting rod, one end of the door plate translational connecting rod is rotatably connected with the middle door plate, and the other end of the door plate translational connecting rod is slidably connected with the hinged middle frame; or the like, or, alternatively,
one end of the door plate translational connecting rod is connected with the middle door plate in a sliding mode, and the other end of the door plate translational connecting rod is connected with the hinged middle frame in a rotating mode. The lifting of the middle door plate is limited by the door plate horizontal east rotation connecting rod.
In a specific embodiment, each transmission member comprises a first swing link, and a pin shaft and a driving shaft respectively fixed on both sides of the swing link, wherein,
the pin shaft is fixedly connected with the corresponding shell support, and the shell support is rotatably connected with the hinged middle frame through the pin shaft;
the middle door plate is provided with a first sliding chute in sliding fit with the driving shaft. Through the cooperation of the pin shaft of the transmission connecting piece and the driving shaft, the middle door plate is driven to lift when the shell rotates.
In a specific embodiment, the first sliding groove is an arc-shaped sliding groove, in particular an S-shaped arc-shaped sliding groove, and a lifting path of the intermediate door panel when the housing rotates is defined by the cooperation of the second sliding groove and the driving shaft.
In a particular possible embodiment, each swivelling connecting rod is provided with a second sliding groove, the corresponding side door panel being provided with a projection which is fitted slidably in said second sliding groove. The movement path of the side door panel is matched through the protrusion and the second sliding chute.
In a particular embodiment, the projection is located at an intermediate position of the end of the intermediate door panel. And the distance from the axis of the rotary connection between the side door plate and the corresponding shell to the corresponding shell is greater than the distance from the bulge on the side door plate to the corresponding shell.
In a specific embodiment, the second chute is an arc chute; when the shell support rotates to a second set position, the side door plate rotates to a fourth set position relative to the shell support; the side door boards are located at the fourth set position, the two side doors are arranged in a splayed shape, and the end, with the larger relative distance, of the two side door boards is close to the middle door board. The space for accommodating the flexible screen is increased.
In a specific possible embodiment, the spindle assembly further includes a support rod rotatably connected to the hinged middle frame, and when the housing bracket rotates to the first setting position, the support rod respectively presses against the side door panel and the hinged middle frame. The unfolded side door panel is supported by the support rods.
In a particular possible embodiment, the spindle means further comprise a damping assembly corresponding to at least one of said swivelling connecting rods; the damping assembly is fixedly connected with the shell, and the rotating connecting rod rotates and slides relative to the shell through the damping assembly. The rotating effect of the rotating shaft mechanism when driving the shell to rotate is improved through the damping component.
In a specific embodiment, the damping assembly comprises: the damping support is fixed on the corresponding shell, the damping shaft is rotatably connected with the damping support, and the second swing rod is fixedly connected with the damping shaft and is rotatably connected with the corresponding rotating connecting rod; the damping assembly further includes at least one set of cam assemblies, and each set of cam assemblies includes: the first cam and the second cam are sleeved on the damping shaft and are matched with each other oppositely; wherein the first cam is fixed relative to the housing and the second cam rotates synchronously with the damping shaft. The damping effect is realized through the cooperation of the first cam and the second cam.
In a specific possible implementation, the second cam is slidably connected to the damping shaft, and a compression spring for pushing the second cam to be in pressing contact with the first cam is sleeved on the damping shaft. The pressing force of the first cam and the second cam is improved by the compression spring.
In a specific possible embodiment, two sets of cam assemblies are sleeved on each damping shaft, wherein two second cams in the two sets of cam assemblies are adjacent to each other, and two ends of the compression spring respectively press against the two second cams. The damping effect is further improved.
In a second aspect, a mobile terminal is provided, where the mobile terminal includes any one of the hinge mechanisms described above, two housings, and a flexible screen fixed to the two housings; the shell supports are fixedly connected with corresponding shells respectively, and the side door plate is rotatably connected with the shells positioned on the same side. In the technical scheme, the middle door plate is linked with the shell through the transmission part and the shell support, the shell can drive the middle door plate to lift when rotating, and therefore the flexible screen has a large space when the mobile terminal is folded.
Drawings
Fig. 1 and fig. 2 are expanded schematic views of a mobile terminal according to an embodiment of the present application;
fig. 3 is a schematic folded state diagram of a mobile terminal according to an embodiment of the present application;
fig. 4 is an exploded schematic view of a mobile terminal according to an embodiment of the present application;
FIG. 5 is an exploded view of a spindle mechanism according to an embodiment of the present disclosure;
FIG. 6 is an exploded view of a spindle assembly according to an embodiment of the present application;
FIG. 7 is a cross-sectional view of a spindle assembly provided in an embodiment of the present application;
FIG. 8 is a schematic structural diagram of a transmission member provided in an embodiment of the present application;
fig. 9 is a diagram illustrating a relative position relationship between a driving shaft and a first sliding groove when a mobile terminal according to an embodiment of the present application is unfolded;
FIG. 10 is a schematic view of the connection of the rotating connecting rod and the hinged middle frame provided by the embodiment of the present application;
FIG. 11 is a schematic end view of a pivotal connection link coupled to a hinged center frame according to an embodiment of the present application;
FIG. 12 is a schematic structural diagram of a damping assembly provided in an embodiment of the present application;
fig. 13a to 13c are schematic diagrams illustrating a process of a mobile terminal according to an embodiment of the present application when the mobile terminal is changed from an unfolded state to a folded state;
fig. 14a to 14d are schematic views illustrating changes of the first door panel, the second door panel and the middle door panel when the mobile terminal is changed from the unfolded state to the folded state according to the embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more clear, the present application will be further described in detail with reference to the accompanying drawings.
To facilitate understanding of the hinge mechanism provided in the embodiments of the present application, an application scenario of the hinge mechanism is first described below, where the hinge mechanism is applied to a mobile terminal, particularly a mobile terminal with a bendable screen, such as a mobile phone, a PDA, a notebook computer, or a tablet computer. But it includes the structure as shown in fig. 1 regardless of which mobile terminal is adopted: the display device comprises a first shell 20, a rotating shaft mechanism 10, a second shell 30 and a flexible screen (not shown in figure 1) fixed on the first shell 20 and the second shell 30. Referring to fig. 1 and 2 together, fig. 1 and 2 show the state of two different surfaces of the mobile terminal after being unfolded, the rotating shaft mechanism 10 is connected to the first casing 20 and the second casing 30 respectively, the first casing 20 and the second casing 30 are relatively rotated by the rotation of the rotating shaft mechanism 10, and the flexible screen covers the first casing 20, the second casing 30 and the rotating shaft mechanism 10 and is adhesively connected to the first casing 20 and the second casing 30 respectively. In use, the mobile terminal includes two states: an unfolded state and a folded state. Referring first to fig. 1 and 2, when the mobile terminal is unfolded, the hinge mechanism 10 is unfolded, and the first and second housings 20 and 30 are respectively unfolded at both sides of the hinge mechanism 10, and at this time, the flexible screen 40 is unfolded. When the first casing 20 and the second casing 30 are folded, the first casing 20 and the second casing 30 are rotated relative to the rotating shaft mechanism 10, and a state shown in fig. 3 is formed, in which the first casing 20 and the second casing 30 are stacked relative to each other, and the flexible screen (not shown) is folded following the first casing 20 and the second casing 30. Fig. 3 illustrates a folding manner in which the flexible screen is located between the first casing 20 and the second casing 30 when being folded, but the mobile terminal provided in the embodiment of the present application is not limited to the folding manner illustrated in fig. 3, and may be folded in a manner that the flexible screen is exposed after being folded. In order to facilitate understanding of the spindle mechanism provided in the embodiments of the present application, the following detailed description of the structure thereof is provided with reference to the accompanying drawings.
Referring first to fig. 4, fig. 4 shows an exploded view of a mobile terminal. As can be seen from fig. 4, the spindle mechanism at least includes: a spindle assembly (not numbered) and a side door panel; the number of the side door panels is two, and for convenience of description, the two side door panels are named as a first door panel 13 and a second door panel 12 respectively. Referring to fig. 4, the first door 13 and the second door 12 are arranged on both sides of the spindle assembly, wherein the first door 13 is connected to the first housing 20, and the second door 12 is connected to the second housing 30.
Referring to fig. 4 and 5 together, the same reference numerals in fig. 4 refer to fig. 2, and fig. 5 is an exploded schematic view of a spindle mechanism according to an embodiment of the present disclosure. The spindle assembly includes at least a hinged middle frame 14 and an intermediate door panel 11 stacked with the hinged middle frame 14, as shown in fig. 4, the intermediate door panel 11 overlying the hinged middle frame 14. When the intermediate door panel 11 is provided, the intermediate door panel 11 can be raised and lowered with respect to the hinged center frame 14, and the raising and lowering means that the intermediate door panel 11 can be moved up and down in the direction in which the two are stacked with respect to the hinged center frame 14. Reference is also made to fig. 5 and 6, wherein fig. 6 shows an exploded view of the spindle assembly. When the middle door panel 11 is lifted relative to the hinged middle frame 14, the middle door panel 11 is connected with the hinged middle frame 14 through the door panel translational connecting rod 17. Referring also to fig. 7, fig. 7 shows a cross-sectional view of the spindle assembly. Two door plate translation connecting rods 17 are arranged between the middle door plate 11 and the hinged middle frame 14, in the structure shown in fig. 7, the two door plate translation connecting rods 17 are symmetrically arranged, and the two door plate translation connecting rods 17 are arranged in an inverted-splayed mode. One end of each door panel translation connecting rod 17 is rotatably connected with the middle door panel 11, and the other end of each door panel translation connecting rod is slidably connected with the hinged middle frame 14. Referring to fig. 6 and 7 together, when the door panel translation connecting rod 17 is connected to the middle door panel 11, a through hole 112 is formed in the middle door panel 11, and a protrusion (not shown) is formed at one end of the door panel translation connecting rod 17 and inserted into the through hole 112 to be rotatable. When the door panel translational connecting rod 17 is connected with the hinged middle frame 14, a sliding groove 141 is arranged in the hinged middle frame 14, and the other end of the door panel translational connecting rod 17 is assembled in the sliding groove 141 in a sliding manner. When the intermediate door panel 11 is lowered, as indicated by the solid arrow in fig. 7, the intermediate door panel 11 moves downward relative to the hinged center frame 14 (with the placement direction of the spindle assembly in fig. 7 as a reference direction), and at the same time, the two door panel translation connecting rods 17 move in the direction indicated by the dashed arrow. When the intermediate door panel 11 moves upward relative to the hinged center frame 14, the intermediate door panel 11 moves in the direction opposite to the solid line arrow, while the two panel translation connecting rods 17 move in the direction opposite to the dashed line arrow.
It should be understood that fig. 6 and 7 described above merely illustrate one specific example of the connection of the panel translation connecting rod 17 to the hinged center 14 and the intermediate panel 11. The door plate translational connecting rods can also be arranged in other modes, for example, the two door plate translational connecting rods are arranged in a splayed arrangement mode, or the two door plate translational connecting rods have the same inclination direction, and the effects of connecting the middle door plate and the hinged middle frame can also be realized. When the door plate translational connecting rod is connected with the hinged middle frame and the middle door plate, in addition to the connection mode shown in fig. 6, one end of the door plate translational connecting rod can be connected with the middle door plate in a sliding mode, the other end of the door plate translational connecting rod is connected with the hinged middle frame in a rotating mode, and the hinged middle frame and the middle door plate which can move relatively can be connected through the two door plate translational connecting rods. In addition, the number of the door plate translation connecting rods is not limited in the embodiment of the application, and two door plate translation connecting rods as shown in fig. 6 can be adopted, and different numbers such as three, four and the like can also be adopted.
With continued reference to fig. 5, the spindle assembly further includes housing brackets 18 for fixedly connecting with each housing, as shown in fig. 5 and 6, the number of the housing brackets 18 is four, and the four housing brackets 18 are symmetrically disposed two by two at the end of the hinge middle frame 14, and the four housing brackets 18 are symmetrically disposed along the axis of the hinge middle frame 14. Wherein each housing bracket 18 is an elongated structure, and the length direction of the housing bracket 18 is perpendicular to the length direction of the hinged middle frame 14. When connected to the housing, the first housing is fixedly connected to the two housing brackets 18 on one side of the axis of the hinge center 14, and the second housing is fixedly connected to the two housing brackets 18 on the other side of the axis of the hinge center 14.
Referring to fig. 5 and 6, the casing support 18 is rotatably connected to the hinged middle frame 14 through a transmission member 19, and the casing supports 18 correspond to the transmission members 19 one by one. The connection between the two is illustrated by taking a housing support 18 and the corresponding transmission member 19 as an example. Each housing support 18 is fixedly connected to a corresponding transmission element 19 and is connected in rotation to the end of the articulated middle frame 14 via this transmission element 19. Referring also to fig. 8, fig. 8 shows a specific structure of the transmission member 19. The transmission member 19 includes a first swing link 191, a pin shaft 193 and a driving shaft 192, wherein the first swing link 191 is a bar-shaped structure, the pin shaft 193 and the driving shaft 192 are respectively close to two ends of the first swing link 191, and the pin shaft 193 and the driving shaft 192 are respectively arranged on two opposite surfaces of the first swing link 191. As shown in fig. 6 and 8, one end of the housing bracket 18 is fixedly connected to the corresponding housing (first housing or second housing), the other end is provided with a through hole 181, and the pin shaft 193 is inserted into the through hole 181 and can be fixed. In fig. 8, it can be seen that the end of the pin shaft 193 away from the first swing link 191 is provided with a notch for limiting, the corresponding through hole 181 on the housing bracket 18 is matched with the end of the pin shaft 193 in shape, and when the pin shaft 193 is inserted into the through hole 181, the pin shaft 193 can be relatively fixed with the through hole 181, so as to realize the fixed connection between the pin shaft 193 and the housing bracket 18. When the first housing or the second housing rotates the housing bracket 18, the housing bracket 18 rotates the pin shaft 193. With continued reference to fig. 6, the end side walls (not labeled) of the hinged center frame 14 are provided with through holes 142 that mate with the pin shafts 193. During assembly, the first swing link 191 is positioned in the hinged middle frame 14, and the length direction of the first swing link 191 is vertical to the axial direction of the hinged middle frame 14; the pin shaft 193 is exposed through the rear end of the through hole 142 in the side wall of the end portion of the hinge center 14, and then the housing bracket 18 is fixed to the end of the pin shaft 193. After being assembled, the housing bracket 18 and the first swing link 191 are arranged on both sides of the side wall of the end portion of the hinge middle frame 14, and the housing bracket 18 is rotatably connected with the hinge middle frame 14 through the pin shaft 193.
With continued reference to fig. 6 and 8, after the transmission member 19 is assembled with the hinged middle frame 14, the driving shaft 192 of the transmission member 19 is located in the hinged middle frame 14, and the middle door panel 11 is provided with the first sliding slot 111 in sliding fit with the driving shaft 192. Referring also to FIG. 9, FIG. 9 shows a schematic view of the engagement of the intermediate door panel 11 with the transmission. When the intermediate door panel 11 is assembled, the driving shaft 192 is inserted into the first sliding slot 111 of the intermediate door panel 11. As shown in fig. 9, the first sliding groove 111 is an arc-shaped sliding groove, specifically, a horizontally-arranged S-shaped arc-shaped sliding groove. With continued reference to fig. 9, fig. 9 shows the relative positional relationship of the drive shaft 192 and the first sliding chute 111 when the mobile terminal is in the unfolded state. The driving shaft 192 is located at one end of the first sliding slot 111, when the mobile terminal is folded, the housing bracket 18 rotates along with the corresponding housing (the first housing or the second housing), and drives the first swing link to swing through the pin shaft, and the driving shaft 192 slides from the end of the first sliding slot 111 to the other end as shown in fig. 9 under the driving of the first swing link. Referring also to fig. 7, when the drive shaft slides from one end of the first chute toward the other end, the intermediate door panel 11 moves in the direction indicated by the solid arrow in fig. 7, i.e., the intermediate door panel 11 moves downward. When the mobile terminal is changed from the folded state to the unfolded state, the middle door panel and the driving shaft move in the opposite directions, and after the mobile terminal is unfolded, the middle door panel 11 is raised to the original position.
With continued reference to fig. 5, the hinge mechanism further includes a rotating link assembly for connecting the side door panels (the first door panel 13 and the second door panel 12), the rotating link assembly as shown in fig. 5 includes two sets of rotating links arranged on both sides of the axis of the hinged middle frame 14, and each set of rotating links includes two rotating links 16 rotatably connected to the hinged middle frame 14; in the structure shown in fig. 5, four rotating link rods 16 are arranged on both sides of the axis of the hinge center 14 and are arranged symmetrically two by two. When four rotation connecting rods 16 are specifically provided, the rotation connecting rods 16 correspond to the housing brackets 18 one to one. When the rotating connecting rods 16 are connected with the shell, each group of rotating connecting rods is connected with a shell (a first shell or a second shell), wherein the connecting mode of each rotating connecting rod 16 and the shell is the same, and the rotating connecting rod 16 is taken as an example for explanation.
Referring also to fig. 5 and 10, fig. 10 shows a connecting structure of the swing link 16 and the hinge center 14. The rotating connecting rod 16 is a long strip structure, and the length direction of the rotating connecting rod 16 is perpendicular to the axial direction of the hinged middle frame 14. Referring also to fig. 11, fig. 11 shows a schematic end view of the pivotal connection bar 16 when connected to the hinged center frame 14. The shaft 1 in fig. 11 is the axis of the rotary connection of the housing bracket and the hinge middle frame 14, the shaft 2 is the axis of the rotary connection rod 16 and the hinge middle frame 14, and the distance D from the shaft 1 to the axis of the hinge middle frame 14 is smaller than the distance D from the shaft 2 to the axis of the hinge middle frame 14. With continued reference to fig. 10, the end portion side wall (not shown) of the hinged middle frame 14 is provided with a notch (not shown) matched with the rotation connecting rod 16, when the rotation connecting rod 16 is connected with the hinged middle frame 14, the end portion of the rotation connecting rod 16 is located in the notch, and the exposed end portion of the pin shaft after passing through the end portion side wall of the hinged middle frame 14 is located outside the rotation connecting rod 16, so that when the shell bracket is connected with the hinged middle frame 14, the rotation connecting rod 16 and the shell bracket are stacked along the axial direction of the hinged middle frame 14, and the rotation connecting rod 16 and the shell bracket do not interfere with each other.
The other end of the rotating connecting rod 16 is connected with a damping assembly 15, and the damping assembly 15 is fixedly connected with the shell, so that the rotating connecting rod 16 is connected with the shell. In a specific correspondence, only one rotating connecting rod 16 may be connected to the damping assembly 15, or one damping assembly 15 may be corresponding to each rotating connecting rod, and in the rotating shaft mechanism shown in fig. 4, one damping assembly 15 corresponds to each rotating connecting rod 16. Reference is also made to fig. 10 and 12, wherein fig. 12 shows a schematic structural view of the damping assembly 15. The damping assembly 15 includes a damping bracket 153 fixedly connected to a corresponding housing (first housing or second housing), and the damping assembly 15 further includes a damping shaft 151 rotatably connected to the damping bracket 153, wherein the length direction of the damping shaft 151 is parallel to the axis of the hinged middle frame 14. The damping shaft 151 is fixedly connected with a second swing link 156, as shown in fig. 11, and the second swing link 156 is rotatably connected with the corresponding rotating connecting rod 16. In addition, the damping assembly 15 further comprises at least one set of cam assemblies, one set of cam assemblies being provided in fig. 12, the cam assemblies comprising: a first cam 155 and a second cam 152 which are sleeved on the damping shaft 151 and are matched with each other oppositely; wherein the first cam 155 is fixed with respect to the damping mount 153, i.e., fixed with respect to the housing; the second cam 152 rotates in synchronization with the damping shaft 151. As shown in fig. 12, two opposite surfaces of the first cam 155 and the second cam 152 are respectively provided with protrusions (not shown) for engagement, and the protrusions on the first cam 155 and the second cam 152 are engaged with each other, so that the damping assembly 15 provides a damping force when the housing rotates.
When the second cam 152 is assembled, the cross section of the portion of the damping shaft 151 engaged with the second cam 152 is non-circular, and the second cam 152 is provided with a through hole correspondingly engaged with the non-circular portion of the damping shaft 151, so that the second cam 152 can be rotated in synchronization with the damping shaft 151 when the damping shaft 151 is rotated.
With reference to fig. 12, in order to provide a good damping force for the damping assembly, the second cam 152 is slidably connected to the damping shaft 151, and the damping shaft 151 is sleeved with a compression spring 154 for pushing the second cam 152 to be in pressing contact with the first cam 155. As shown in fig. 12, the compression spring 154 is fitted over the damper shaft 151, and one end of the compression spring 154 is pressed against the second cam 152 and the other end is pressed against the damper bracket 153, so that the compression spring 154 can provide a pressing force against the second cam 152.
With continued reference to fig. 12, the first cam 155 may be integrally formed with the damping bracket 153 while the first cam 155 is fixedly coupled with the damping bracket 153. Of course, the first cam 155 may be a separate structure from the damping bracket 153, and in this case, the first cam 155 may be fixedly connected to the damping bracket 153 by bonding, welding or by a threaded connection member (such as a bolt or a screw).
With continued reference to fig. 12, an end of the damping shaft 151 exposed out of the first cam 155 is connected to the second swing link 156, wherein the length direction of the second swing link 156 is perpendicular to the length direction of the damping shaft 151. And a rotating shaft 157 is arranged on one surface of the second swing rod 156 departing from the damping shaft 151, and the second swing rod 156 is rotatably connected with one end of the rotating connecting rod far away from the hinged middle frame through the rotating shaft 157. As shown in fig. 11, the shaft 3 is the axis of the second swing link 156 rotatably connected to the rotating connecting rod 16, and the shaft 4 is the axis of the damping shaft. As can be seen from fig. 11, when the rotation connecting rod 16 is connected with the housing through the damping assembly 15, the shaft 1, the shaft 2, the shaft 3 and the shaft 4 form an X-shaped rotation force link structure, and the rotation of the shaft 1 will be transmitted to the shaft 4, so as to realize the function of transmitting the rotation angle, and transmit the angle to the damping shaft 151.
For convenience of understanding the rotation of the shafts 1, 2, 3 and 4, fig. 13a to 13c show the rotation of the shafts 1, 2, 3 and 4 when the mobile terminal is changed from the unfolded state to the folded state. Referring first to fig. 13a, fig. 13a illustrates a positional relationship of the hinge middle frame 14, the rotation link 16, and the damping member when the mobile terminal is in the unfolded state. When the mobile terminal is changed from the unfolded state to the folded state, the housing bracket (not shown in the figure) rotates around the pin shaft, the axis of the housing bracket is the shaft 1, and the rotating direction is the direction shown by the arrow in fig. 13 a; the rotating connecting rod 16 rotates around the shaft 2 in the direction indicated by the arrow in fig. 13 a; one end of the second swing link 156 rotates around the shaft 4, and the other end rotates around the shaft 3, and the rotation directions of the two ends of the second swing link 156 are as shown by arrows in fig. 13 a. When the mobile terminal starts to fold, since the axis 1 and the axis 2 are spaced by a certain distance, and the housing (the first housing or the second housing) is respectively and fixedly connected to the housing bracket and the damping bracket 153, the housing rotates around the axis 1 and drives the damping bracket 153 to move. When the housing rotates, the housing bracket is driven to rotate, the rotating connecting rod 16 is driven to rotate, and simultaneously the rotating connecting rod 16 drives the second swing link 156 to swing, so that the second swing link 156 rotates around the shaft 4, and thus the rotation of the shaft 1 is transmitted to the rotation of the shaft 4, with reference to fig. 13b and 13c, where fig. 13b and 13c are positions where the second swing link 156 is located in the folding process of the mobile terminal. As can be seen from fig. 13b and 13c, in the folding process of the mobile terminal, the second swing link 156 rotates around the shaft 4, the shaft 4 is an axis of the damping shaft, and the second swing link 156 is fixedly connected to the damping shaft, so that the swing of the second swing link 156 drives the damping shaft to rotate, and further drives the second cam to rotate relative to the first cam, thereby achieving the damping effect.
In the above example, each damping component includes one group of cam components, but the number of the cam components is not limited in the embodiment of the present application, for example, two groups of cam components may be sleeved on each damping shaft, when two groups of cam components are adopted, two second cams in the two groups of cam components are adjacently disposed, and the connection manner of the first cam and the second cam with the damping shaft and the damping bracket is the same as that of the group of cam components, which is not described herein again. The compression spring is arranged between the two groups of cam assemblies, is sleeved on the damping shaft, is respectively pressed at two ends of the damping shaft against the two second cams, and pushes the two second cams to face the corresponding first cams through the compression spring. A damping effect can also be achieved.
As can be seen from the above description, the rotating connecting rod rotates and slides relative to the housing through the damping assembly. However, the connection mode of the rotating connecting rod and the housing provided in the embodiment of the present application is not limited to the above-mentioned damping assembly, and only the housing located on the same side relative to the rotating connecting rod needs to rotate and slide, for example, the rotating connecting rod adopts a structure similar to the transmission member shown in fig. 8 to connect with the corresponding housing, or a sliding groove is provided on the corresponding housing, one end of the rotating connecting rod is slidably connected with the sliding groove, and the rotating connecting rod and the housing located on the same side can rotate and slide relative to each other.
With continuing reference to fig. 4 and 5, the side door panel provided in the embodiment of the present application includes the first door panel 13 and the second door panel 12, when the first door panel 13 and the second door panel 12 are connected, the first door panel 13 and the second door panel 12 are correspondingly arranged at two sides of the hinged middle frame 14, and each side door panel is rotatably connected to the housing located at the same side and slidably connected to the rotating connecting rod 16 located at the same side. The first door panel 13 is rotatably connected to the first casing 20, the second door panel 12 is rotatably connected to the second casing 30, and the connection manner of the two door panels to the corresponding casings and the rotating connecting rods 16 is the same, and the connection manner of the first door panel 13 to the corresponding rotating connecting rods 16 and the first casing 20 will be described below.
As shown in fig. 5, the first door panel 13 is a rectangular door panel, the first door panel 13 has two opposite long sides and two opposite short sides, and the length direction of the long sides is parallel to the axial direction of the hinged middle frame 14; one of which is adjacent to the hinged middle frame 14 and the other of which is adjacent to the first shell (not shown). And the first door panel 13 is provided with a rotating shaft 131 near the long side of the first housing, and referring to fig. 4 and 5, the first door panel 13 is rotatably connected to the first housing 20 through the rotating shaft 131. With continued reference to fig. 5, the number of the rotating shafts 131 provided on the first door panel 13 is two, and the two rotating shafts 131 are symmetrically provided at two ends of the first door panel 13 (the end where the short side of the first door panel 13 is located). With continued reference to fig. 5, when the first door panel 13 is slidably connected to the corresponding rotating connecting rod 16, the two ends of the first door panel 13 are symmetrically provided with the protrusions 132, and the protrusions 132 are disposed on the ends of the first door panel 13 near the middle thereof, such as the protrusions 132 are disposed at the middle position of the ends of the first door panel 13 in fig. 5, but may also be disposed at a distance from the middle position of the ends of the first door panel 13. With continued reference to fig. 5, the protrusion 132 is configured to slidably connect with the corresponding rotating connecting rod 16, so that the corresponding rotating connecting rod 16 is provided with a second sliding slot 161, the second sliding slot 161 is an arc-shaped sliding slot, and the concave direction of the arc of the second sliding slot 161 in fig. 5 is upward (the placing direction of the rotating connecting rod 16 in fig. 5 is taken as the reference direction). When the first door panel 13 is assembled with the corresponding rotating connecting rod 16, the two protrusions 132 of the first door panel 13 are correspondingly and slidably assembled in the second sliding grooves 161 of the two rotating connecting rods 16 located on the same side.
As can be seen from the above description, when the first door panel 13 is assembled, the first door panel 13 is both rotatably connected to the first housing and slidably connected to the corresponding rotating connecting rod 16. And the distance from the axis of the rotary connection of the first door panel 13 with the corresponding shell to the shell is greater than the distance from the projection 132 on the side door panel to the shell. As can be seen by referring to the above description in conjunction with fig. 13a to 13c, the transmission connecting rod 16 rotates relative to the hinge middle frame 14 when the mobile terminal is changed from the unfolded state to the folded state. Meanwhile, the first shell and the second shell rotate relative to the hinged middle frame 14. Therefore, the first door panel 13 and the second door panel 12 will change when the first casing and the second casing rotate relative to the hinged middle frame 14 through the rotation connecting rod 16. Next, a variation thereof will be described with reference to fig. 14a to 14 d.
Referring first to fig. 14a, fig. 14a is a schematic view illustrating a state of the hinge 131 mechanism when the mobile terminal is in an unfolded state; although the first and second housings are not shown in fig. 14a, the first and second housings are fixedly connected to the housing bracket 18, and thus the rotation state of the first and second housings with respect to the hinged center 14 can be represented by the movement state of the housing bracket 18. In the configuration shown in fig. 14a, the middle door panel 11 and the two side door panels are used to support the flexible screen when the housing bracket 18 is rotated to the first set position; the first setting position is the position of the housing support 18 when the mobile terminal is in the unfolded state, and particularly, refer to the state of the housing support 18 hinged to the middle frame 14 shown in fig. 14 a. The first door panel 13 and the second door panel 12 are now approximately flush or completely flush with the middle door panel 11 and together support the flexible screen.
Fig. 14b and 14c are also referred to, wherein fig. 14b and 14c show the changed states of the first door panel 13, the second door panel 12 and the middle door panel 11 during the folding process of the mobile terminal. When the first and second housings of the mobile terminal are rotated toward the folded state, the housing bracket 18 rotates relative to the hinged middle frame 14, and the rotating connecting rod 16 is also rotated, specifically, referring to fig. 13a to 13 c. And when the housing bracket 18 is rotated, referring to the description of fig. 7 together, the middle door panel 11 is lowered with respect to the hinged middle frame 14, and as can be seen from a comparison of fig. 14a and 14b, when the mobile terminal is changed from the unfolded state toward the folded state, the middle door panel 11 is lowered with respect to the hinged middle frame 14 by a distance h. Referring also to fig. 14c, as the shell bracket 18 continues to rotate, the distance that the center door panel 11 descends relative to the hinged center 14 continues to increase. When the housing support 18 is rotated to a second set position, which is the position the housing support 18 is in when the mobile terminal is in the folded state, as shown in fig. 14 d. The middle door panel 11 is now lowered to a set third position and encloses with the two side door panels a space accommodating the bent portion of the flexible screen.
With continued reference to fig. 14a to 14d, in the process of rotating the first housing and the second housing, because the first door panel 13 and the second door panel 12 are respectively and correspondingly connected with the first housing and the second housing in a rotating manner, and the first door panel 13 and the second door panel 12 also respectively slide with the corresponding rotating connecting rods 16, because the second sliding slot 161 adopts an arc-shaped slot, the first door panel 13 and the second door panel 12 can both rotate relative to the corresponding first housing and second housing under the limitation of the second sliding slot 161. The first door panel 13 and the second door panel 12 move symmetrically, and therefore, the rotation mode of the first door panel 13 is taken as an example for explanation. When the first housing rotates, the direction of relative rotation of the first door panel 13 and the first housing is the same as the direction of rotation of the first housing. As shown in fig. 14a to 14c, the first housing is rotated clockwise, and the first door panel 13 is also rotated clockwise with respect to the first housing. Therefore, when the housing bracket 18 is rotated to the second setting position, the first door panel 13 and the second door panel 12 are rotated to the fourth setting position relative to the corresponding housing; when the first door panel 13 and the second door panel 12 are located at the fourth setting position, the first door panel 13 and the second door panel 12 are arranged in a splayed shape, and one end of the first door panel 13, which is relatively far from the second door panel 12, is close to the middle door panel 11. The area for accommodating the flexible screen is a trapezoid accommodating space formed by the lowered middle door panel 11, the first door panel 13 and the second door panel 12 which are arranged in a splay shape. Compare with the equal relatively fixed mode of middle door plant and two side door boards among the prior art and compare, increased the space that holds flexible screen. The flexible screen can be bent by adopting a larger radian when being folded, so that the folding condition of the flexible screen is improved, and the damage to the flexible screen caused by undersolding is avoided.
As can be seen from the above description of the first door panel 13 and the second door panel 12, one end of the first door panel 13 and the second door panel 12 close to the hinged middle frame 14 is in a suspended state, and the first door panel 13 is rotatably connected to the first housing and slidably connected to the corresponding rotating connecting rod 16, so that when the first door panel 13 is in the state shown in fig. 14a, the first door panel 13 is in an unstable state, and when the first door panel 13 is pressed, the first door panel 13 can rotate clockwise relative to the first housing, and as can be seen from the above description, when the first door panel 13 is connected to the first housing and the corresponding rotating connecting rod 16, the first door panel 13 can rotate clockwise relative to the first housing. Therefore, when the first door panel 13 supports the flexible screen, the first door panel 13 cannot provide support for the flexible screen when pressed. The same second door panel 12 also suffers from this problem. The spindle assembly further includes a support rod 20 rotatably connected to the hinged center frame 14 as shown in fig. 5; the number of the support rods 20 may correspond to the number of the side door panels one to one, or one side door panel may correspond to two or three support rods 20, as shown in fig. 5, each side door panel corresponds to two support rods 20. Taking the first door panel 13 as an example, one end of the support rod 20 is rotatably connected to the hinged middle frame 14, and the other end is suspended and inserted below the first door panel 13, and the suspended end of the support rod 20 has an arc-shaped bend, and the bent end faces the first door panel 13. And when the shell bracket 18 rotates to the first setting position, the support rod 20 is respectively pressed against the first door panel 13 and the hinged middle frame 14. Specifically, the support rod 20 is limited by the hinged middle frame 14, and the rotation of the support rod 20 relative to the hinged middle frame 14 in the counterclockwise direction is limited, so that when the first door panel 13 is pressed, the first door panel 13 can provide a supporting force through the pressed support rod 20. When the mobile terminal is changed from the unfolded state to the folded state, the first support rod 20 can rotate clockwise relative to the hinged middle frame 14, and the rotated support rod 20 does not affect the rotation of the first door panel 13 relative to the first housing.
As can be seen from the above description, the rotating shaft mechanism in the embodiment of the present application links the middle door panel 11 and the housing by using the transmission member and the housing bracket 18, and the housing can rotate while driving the middle door panel 11 to ascend and descend, so that the flexible screen has a larger space when the mobile terminal is folded.
With continuing reference to fig. 1, fig. 2 and fig. 3, an embodiment of the present application further provides a mobile terminal, which includes any one of the hinge mechanisms described above, two housings, and a flexible screen fixed to the two housings; the shell supports are fixedly connected with corresponding shells respectively, and the side door plates are rotatably connected with the shells positioned on the same side. The specific structure of the rotating shaft mechanism can refer to the description in the above. This pivot mechanism is through adopting driving medium and casing support with middle door plant and casing linkage, can drive middle door plant and go up and down when the casing rotates to make when mobile terminal is folding, flexible screen has great space.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (11)

1. The utility model provides a pivot mechanism is applied to folding mobile terminal, mobile terminal include two casings and with two casing fixed connection's flexible screen, its characterized in that, pivot mechanism includes:
the spindle assembly comprises a hinged middle frame, a middle door panel which covers the hinged middle frame and can lift relative to the hinged middle frame, and a shell bracket which is fixedly connected with each shell; the hinge middle frame is rotatably connected with the shell support through the corresponding transmission parts, and the transmission parts are also used for driving the middle door panel to lift when the shell support rotates;
the connecting rod assembly comprises two groups of rotating connecting rods which are arranged on two sides of the axis of the hinged middle frame in a split mode, and each group of rotating connecting rods comprises two rotating connecting rods which are rotatably connected with the hinged middle frame; one end of each rotary connecting rod is rotatably connected with the end part of the hinged middle frame, and the other end of each rotary connecting rod can rotate and slide relative to the shell positioned on the same side;
the two side door plates are correspondingly arranged on two sides of the hinged middle frame, and each side door plate is rotatably connected with the shell positioned on the same side and is in sliding connection with the rotating connecting rod positioned on the same side;
when the shell support rotates to a first set position, the middle door panel and the two side door panels are used for supporting the flexible screen; when the shell support rotates to a second set position, the middle door panel descends to a set third position and forms a space for accommodating the bent part of the flexible screen together with the two side door panels.
2. The rotating shaft mechanism according to claim 1, further comprising a door plate translation connecting rod, wherein one end of the door plate translation connecting rod is rotatably connected with the middle door plate, and the other end of the door plate translation connecting rod is slidably connected with the hinged middle frame; or the like, or, alternatively,
one end of the door plate translational connecting rod is connected with the middle door plate in a sliding mode, and the other end of the door plate translational connecting rod is connected with the hinged middle frame in a rotating mode.
3. The spindle mechanism according to claim 1, wherein each transmission member includes a first swing link, and a pin shaft and a driving shaft respectively fixed to both sides of the swing link,
the pin shaft is fixedly connected with the corresponding shell support, and the shell support is rotatably connected with the hinged middle frame through the pin shaft;
the middle door plate is provided with a first sliding chute in sliding fit with the driving shaft.
4. The hinge mechanism according to claim 1, wherein each pivotal connecting rod is provided with a second sliding groove, and the corresponding side door panel is provided with a projection slidably fitted in the second sliding groove.
5. The spindle mechanism according to claim 4, wherein the second slide slot is an arc-shaped slide slot; when the shell support rotates to a second set position, the side door plate rotates to a fourth set position relative to the shell support; the side door boards are located at the fourth set position, the two side doors are arranged in a splayed shape, and the end, with the larger relative distance, of the two side door boards is close to the middle door board.
6. The hinge mechanism as claimed in claim 5, wherein the spindle assembly further comprises a support rod rotatably connected to the hinged middle frame, and when the housing bracket rotates to the first setting position, the support rod respectively presses against the side door plate and the hinged middle frame.
7. The spindle mechanism according to any one of claims 1 to 6, further comprising a damping member corresponding to at least one of the rotating connecting rods; the damping assembly is fixedly connected with the shell, and the rotating connecting rod rotates and slides relative to the shell through the damping assembly.
8. The spindle mechanism according to claim 7, wherein the damping assembly comprises: the damping support is fixed on the corresponding shell, the damping shaft is rotatably connected with the damping support, and the second swing rod is fixedly connected with the damping shaft and is rotatably connected with the corresponding rotating connecting rod; the damping assembly further includes at least one set of cam assemblies, and each set of cam assemblies includes: the first cam and the second cam are sleeved on the damping shaft and are matched with each other oppositely; wherein the first cam is fixed relative to the housing and the second cam rotates synchronously with the damping shaft.
9. The rotating shaft mechanism according to claim 8, wherein the second cam is slidably connected to the damping shaft, and a compression spring for pushing the second cam to contact with the first cam in a pressing manner is sleeved on the damping shaft.
10. The hinge mechanism as claimed in claim 9, wherein each damping shaft is sleeved with two sets of cam assemblies, wherein two second cams of the two sets of cam assemblies are adjacent to each other, and two ends of the compression spring respectively press against the two second cams.
11. A mobile terminal, comprising the hinge mechanism according to any one of claims 1 to 10, and two housings, further comprising a flexible screen fixed to the two housings; the shell supports are fixedly connected with corresponding shells respectively, and the side door plate is rotatably connected with the shells positioned on the same side.
CN201910647586.3A 2019-07-17 2019-07-17 Rotating shaft mechanism and mobile terminal Pending CN112243053A (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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