CN210686632U

CN210686632U - Auxiliary screen support three-section switching structure and double-shaft hinge

Info

Publication number: CN210686632U
Application number: CN201920727583.6U
Authority: CN
Inventors: 司林生
Original assignee: Kunshan Voso Hinge Intelligence Technology Co ltd
Current assignee: Kunshan Voso Hinge Intelligence Technology Co ltd
Priority date: 2019-05-21
Filing date: 2019-05-21
Publication date: 2020-06-05
Anticipated expiration: 2029-05-21

Abstract

The utility model discloses an auxiliary screen supports three-section switching structure and two-axis hinge, the auxiliary screen supports three-section switching structure mainly comprises a first, a second, a third connecting plate, a first, a second cam, a spacing post, a first, a second shaft sleeve and a sliding pin, the function of two-section switching of two shafts can be realized through the matching of a first arc notch on the first cam, a second arc notch on the second cam and the spacing post, a first stop block is formed on the sliding pin to be matched with a first spacing groove on the first cam, a second stop groove on the second cam is matched with a second stop block on the second connecting plate, the second shaft sleeve is matched with the sliding pin, a third stop block on the first shaft sleeve is matched with a third spacing groove on the second connecting plate, the alternate rotation of two shaft cores in the opening and closing process is realized, thereby the three-section switching function of the two-axis hinge is realized, thereby meeting the requirements of electronic products such as notebook computers with auxiliary screens.

Description

Auxiliary screen support three-section switching structure and double-shaft hinge

Technical Field

The utility model relates to a biaxial hinge for electronic equipment specifically relates to an auxiliary screen supports three-section switching structure and biaxial hinge.

Background

The biaxial hinge is also called a biaxial hinge or a biaxial rotating shaft, is a connecting element capable of providing mutual rotation, is mainly applied between a rotating part and a base body thereof, is widely applied to various digital products and electronic equipment such as a notebook computer at present, and can realize the opening and closing function between the base body and a display screen of the notebook computer by utilizing the mutual rotation function of the biaxial hinge so as to adjust the angle of the notebook computer relative to a human body. See patent document CN203604427U, a double-shaft-core rotating shaft with 360-degree rotational positioning and abnormal sound prevention functions, mainly by two shaft cores, a first connecting plate, a second connecting plate, two positioning cams, spacing post and torsion component constitute, it is first, the second connecting plate combines two independent shaft cores together, it is first, the accommodating space that two positioning cams on two shaft cores are enclosed to second connecting plate and cover admittedly carries on spacingly to spacing post, spacing post plays the effect of switching double-shaft rotation, when can realizing that a shaft core rotates, another shaft core is locked unable pivoted function by spacing post, thereby in opening and closing process, can switch double-shaft rotation in turn. With the development of more humanized design of electronic products such as notebook computers, a notebook computer with an auxiliary screen can satisfy the requirement of multi-screen display of people, and users can browse different windows without switching the screen, wherein the auxiliary screen is usually embedded at a position of a notebook base body close to a rotating shaft, the auxiliary screen needs to be opened while the main screen is opened, and the interference between the auxiliary screen and the main screen needs to be avoided while the auxiliary screen is opened, which provides a new challenge for the existing biaxial hinge, that is, the existing biaxial hinge needs to satisfy the following functions, that is, when the main screen is opened at a first angle, the auxiliary screen is not opened, when the main screen is opened at a second angle, the auxiliary screen is opened simultaneously, and when the main screen is opened at a third angle, the auxiliary screen needs to be positioned in an opened state, and the function of the existing biaxial hinge can only realize two-section switching function, the new requirement of the notebook computer with the auxiliary screen cannot be met, and therefore, it is very necessary to develop and design a three-segment switching structure and a two-axis hinge capable of supporting the auxiliary screen.

Disclosure of Invention

In order to solve the technical problem, the utility model provides an auxiliary screen supports three-section switching structure has realized opening and the rotation in turn of two pivots in the closed process, has realized the three-section switching function of two-axis hinge, can satisfy the demand of electronic products such as notebook computer that have auxiliary screen.

The technical scheme of the utility model is realized like this:

an auxiliary screen support three-section switching structure comprises a first connecting plate, a second connecting plate, a third connecting plate, a first cam, a second cam, a limiting column, a first shaft sleeve, a second shaft sleeve and a sliding pin, wherein a first arc-shaped notch is formed on the periphery of the first cam, two second arc-shaped notches which are arranged at intervals are formed on the periphery of the second cam, the second connecting plate comprises a plate body and an extending body formed on one side of the plate body, the first cam and the first shaft sleeve are sleeved on a first shaft core of a double-shaft hinge, and the second cam and the second shaft sleeve are sleeved on a second shaft core of the double-shaft hinge; the first connecting plate, the second connecting plate and the third connecting plate are all sleeved on the first shaft core and the second shaft core simultaneously and can rotate circumferentially relative to the first shaft core and the second shaft core, the first cam and the second cam are clamped between the first connecting plate and the second connecting plate, the first shaft sleeve is clamped between the extension body and the third connecting plate, and the second shaft sleeve is clamped between the plate body and the third connecting plate; the limiting column is arranged in a first accommodating space defined by the first connecting plate, the second connecting plate, the first cam and the second cam, and the sliding pin is arranged in a second accommodating space defined by the plate body, the third connecting plate, the first shaft sleeve and the extension body; one side, facing the plate body, of the first cam is hollowed to form a first limiting groove extending along the circumferential direction, one side, facing the plate body, of the sliding pin is provided with a first stop block, an avoiding groove for avoiding the sliding pin to slide along the axial direction is formed in the extending body, and an avoiding through hole for avoiding the first stop block is formed in the plate body; the first stop block penetrates through the avoiding through hole and is inserted into the first limiting groove, and the first stop block performs stop positioning on the first cam after the first cam rotates for a first angle along the circumferential direction along with the first shaft core; one side, facing the plate body, of the second cam is hollowed to form a second limiting groove extending along the circumferential direction, a second stop block is formed on the plate body and is inserted into the second limiting groove, the second stop block stops and positions the second cam after the second cam rotates along the circumferential direction by a second angle along with the second shaft core, and meanwhile, in the process that the second shaft sleeve rotates along with the second shaft core by the second angle, the second shaft sleeve can drive the sliding pin to slide towards the third connecting plate along the axial direction, so that the first stop block is separated from the first limiting groove; a third limit groove extending along the circumferential direction is formed in one side, facing the first shaft sleeve, of the extending body in a hollowed mode, a third stop block is formed on the first shaft sleeve, the third stop block is inserted into the third limit groove, the third stop block stops at one side of the third limit groove after rotating for a first angle along with the first shaft core and then rotating for a third angle, and the third stop block stops and positions the sliding pin sliding towards a third connecting plate after rotating for the first angle along with the first shaft core; the limiting column can be switched between the first arc notch and the second arc notch, and is positioned between the first arc notch on the first cam and the second arc notch on the second cam during a first angle, and is positioned between the first arc notch on the first cam and the other second arc notch on the second cam during a second angle, and is positioned in the other second arc notch on the second cam during a third angle.

Furthermore, first connecting plate orientation one side of spacing post is equipped with first spacing waist hole, orientation on the plate body of second connecting plate one side of spacing post is equipped with the spacing waist hole of second, corresponds first spacing waist hole, be formed with first locating post on the terminal surface of spacing post, correspond the spacing waist hole of second, be formed with the second reference column on another terminal surface of spacing post, first locating post axial locking is inserted and is arranged in the first spacing waist hole, second reference column axial locking is inserted and is arranged in the spacing waist hole of second.

Furthermore, the second shaft sleeve is in a circular tube shape, a spiral guide groove is formed in the peripheral side face of the second shaft sleeve, the side face, facing the second shaft sleeve, of the sliding pin is an arc face, a circular guide pillar is formed in the arc face, the arc face is attached to the peripheral side face of the second bearing, and the circular guide pillar is inserted into the spiral guide groove.

Furthermore, dodge the groove part and surround the sliding pin, be formed with the sliding tray on dodging the lateral wall in groove, be formed with on the outer wall of sliding pin with sliding tray sliding fit's slip strip.

A double-shaft hinge comprises a first shaft core, a second shaft core, a first torsion assembly, a second torsion assembly and an auxiliary screen support three-section switching structure, wherein a first shaft baffle is formed on the first shaft core, a second shaft baffle is formed on the second shaft core, a first connecting plate, a first cam, a second connecting plate, the first shaft sleeve and a third connecting plate are sequentially sleeved on the first shaft core and then locked to the first shaft baffle through the first torsion assembly, and the first connecting plate, the second cam, the second connecting plate, the second shaft sleeve and the third connecting plate are sequentially sleeved on the second shaft core and then locked to the second shaft baffle through the second torsion assembly.

The first closed cam is sleeved on the first shaft core, the first closed cam can circumferentially stop and axially freely slide relative to the first shaft core, the second closed cam is sleeved on the second shaft core, the second closed cam can circumferentially stop and axially freely slide relative to the second shaft core, the closed connecting plate is simultaneously sleeved on the first shaft core and the second shaft core, the closed connecting plate can circumferentially rotate relative to the first shaft core and the second shaft core, the first closed cam and the closed connecting plate are clamped between the first torsion component and the first connecting plate, and a first bulge and a first groove which are matched in size are arranged on the surface of the first closed cam, which is opposite to the closed connecting plate, the second closed cam and the closed connecting plate are clamped between the second torsion assembly and the first connecting plate, and a second protrusion and a second groove which are matched in size are arranged on the surface, opposite to the closed connecting plate, of the second closed cam.

Furthermore, one end of the first shaft core is fixedly connected with a first fixing support used for being embedded into a display screen of the electronic equipment, and one end of the second shaft core is fixedly connected with a second fixing support used for being embedded into a base body of the electronic equipment.

Furthermore, the first torsion assembly and the second torsion assembly respectively comprise a plurality of gaskets, a plurality of butterfly-shaped elastic pieces and locking nuts.

Furthermore, a first silencing gasket is arranged between the first closing cam and the butterfly-shaped elastic sheet of the first torsion assembly, a plurality of first bosses are arranged on one side, facing the first silencing gasket, of the first closing cam at intervals, corresponding to each first boss, a first clamping groove with the size matched with that of each first boss is formed in each first silencing gasket, and each first boss is clamped in the corresponding first clamping groove; and a second silencing gasket is arranged between the second closed cam and the butterfly-shaped elastic sheet of the second torque assembly, a plurality of second bosses are arranged on one side of the second closed cam, facing the second silencing gasket, at intervals and correspond to each second boss, a second clamping groove with the size matched with that of each second boss is arranged on the second silencing gasket, and the second bosses are clamped in the second clamping grooves.

The utility model has the advantages that: the utility model provides an auxiliary screen supports three-section switching structure, through the first arc breach on the first cam, the cooperation of second arc breach and spacing post on the second cam, when can realizing that an axle core rotates, another axle core is locked by spacing post and can't the pivoted function, can realize the function of two sections switching of biax, and then through forming first backstop piece on one side of the board body of sliding pin orientation second connecting plate, and form the first spacing groove that extends along circumference through hollowing out in one side of first cam towards the board body, with the help of the cooperation of first backstop piece and first spacing groove, can realize that first axle core drives the backstop locate function after the first cam on it rotates first angle (for example 30 degrees); a second limit groove extending along the circumferential direction is formed by hollowing one side, facing the plate body, of the second cam, a second stop block is formed on the plate body of the second connecting plate, and the second stop block is matched with the second limit groove, so that the stop positioning function of the second cam driven by the second shaft core after the second cam rotates for a second angle (for example, 90 degrees) can be realized; meanwhile, the second shaft sleeve is arranged on the second shaft core, and in the process that the second shaft sleeve rotates for a second angle along with the second shaft core, the second shaft sleeve drives the sliding pin to slide along the axial direction, so that the first stop block is unlocked to lock the first cam, the unlocking function of the first shaft core is realized, and the first shaft core can continue to rotate for a third angle (for example, 60 degrees); through set up first axle sleeve on first axle core to carry out the backstop cooperation by the third backstop piece that forms on the extension body of first axle sleeve and second connecting plate, realized backstop once more and fix a position the function of first axle core, and through the backstop cooperation of third backstop piece and sliding pin, realized the backstop locate function when first axle core antiport third angle. Therefore, the two shaft cores can rotate alternately in the opening and closing processes, the three-section switching function of the double-shaft hinge is realized, and the requirements of electronic products such as notebook computers with auxiliary screens are met.

Drawings

Fig. 1 is a perspective view of the auxiliary screen supporting three-section switching structure of the present invention;

fig. 2 is an exploded view of an auxiliary screen supporting a three-section switching structure according to the present invention;

fig. 3 is an exploded view of another view angle of the auxiliary screen supporting three-segment switching structure of the present invention;

fig. 4 is a schematic structural view of the assembly of the second shaft sleeve and the sliding pin according to the present invention;

fig. 5 is a schematic structural view of a sliding pin according to the present invention;

FIG. 6 is a schematic structural view of a second connecting plate according to the present invention;

fig. 7 is a schematic structural view of the initial state (zero degree) of the biaxial hinge of the present invention;

fig. 8 is a schematic structural view of the dual-axis hinge according to the present invention after the first axis rotates by a first angle (for example, 30 degrees);

fig. 9 is a schematic structural view of the second axial core of the dual-axis hinge according to the present invention after rotating a second angle (for example, 90 degrees);

fig. 10 is a schematic structural view of the dual-axis hinge according to the present invention after the first axis rotates a third angle (for example, 60 degrees).

Detailed Description

In order to clearly understand the technical content of the present invention, the following embodiments are specifically mentioned, which are only for the purpose of better understanding the content of the present invention and not for the purpose of limiting the scope of the present invention.

Fig. 1 is a perspective view of the auxiliary screen supporting three-section switching structure of the present invention; fig. 2 is an exploded view of an auxiliary screen supporting a three-section switching structure according to the present invention; fig. 3 is an exploded view of another view angle of the auxiliary screen supporting three-segment switching structure of the present invention; fig. 4 is a schematic structural view of the assembly of the second shaft sleeve and the sliding pin according to the present invention; fig. 5 is a schematic structural view of a sliding pin according to the present invention; fig. 6 is a schematic structural view of the second connecting plate of the present invention.

Referring to fig. 1, 2, 3, 4, 5 and 6, an auxiliary screen support three-section switching structure includes a first connecting plate 1, a second connecting plate 2, a third connecting plate 3, a first cam 4, a second cam 5, a limiting column 6, a first shaft sleeve 7, a second shaft sleeve 8 and a sliding pin 9, wherein a first arc notch 401 is formed on the peripheral side of the first cam, two second arc notches 501 are formed on the peripheral side of the second cam at intervals, the second connecting plate includes a plate body 201 and an extension body 202 formed on one side of the plate body, the first cam and the first shaft sleeve are both sleeved on a first shaft core 110 of a biaxial hinge, and the second cam and the second shaft sleeve are both sleeved on a second shaft core 120 of the biaxial hinge; the first connecting plate, the second connecting plate and the third connecting plate are all sleeved on the first shaft core and the second shaft core simultaneously and can rotate circumferentially relative to the first shaft core and the second shaft core, the first cam and the second cam are clamped between the first connecting plate and the second connecting plate, the first shaft sleeve is clamped between the extension body and the third connecting plate, and the second shaft sleeve is clamped between the plate body and the third connecting plate; the limiting column is arranged in a first accommodating space defined by the first connecting plate, the second connecting plate, the first cam and the second cam, and the sliding pin is arranged in a second accommodating space defined by the plate body, the third connecting plate, the first shaft sleeve and the extension body; one side of the first cam facing the plate body is hollowed to form a first limiting groove 402 extending along the circumferential direction, one side of the sliding pin facing the plate body is provided with a first stopping block 901, the extending body is provided with an avoiding groove 2021 avoiding the sliding pin to slide along the axial direction, and the plate body is provided with an avoiding through hole 2011 avoiding the first stopping block; the first stop block penetrates through the avoiding through hole and is inserted into the first limiting groove, and the first stop block performs stop positioning on the first cam after the first cam rotates for a first angle along the circumferential direction along with the first shaft core; a second limit groove 502 extending along the circumferential direction is formed in one side, facing the plate body, of the second cam in a hollowed mode, a second stop block 203 is formed on the plate body and is inserted into the second limit groove, the second stop block stops and positions the second cam after the second cam rotates along the circumferential direction by a second angle along with the second shaft core, and meanwhile, in the process that the second shaft sleeve rotates along with the second shaft core by the second angle, the second shaft sleeve can drive the sliding pin to slide towards the third connecting plate along the axial direction so that the first stop block is separated from the first limit groove; a third limit groove 2022 extending along the circumferential direction is formed by hollowing one side of the extending body facing the first shaft sleeve, a third stop block 701 is formed on the first shaft sleeve, the third stop block is inserted into the third limit groove, the third stop block stops at one side of the third limit groove after continuously rotating for a third angle along with the rotation of the first shaft core for a first angle, and the third stop block stops and positions the sliding pin sliding towards a third connecting plate after rotating for the first angle along with the rotation of the first shaft core; the limiting column can be switched between the first arc notch and the second arc notch, and is positioned between the first arc notch on the first cam and the second arc notch on the second cam during a first angle, and is positioned between the first arc notch on the first cam and the other second arc notch on the second cam during a second angle, and is positioned in the other second arc notch on the second cam during a third angle.

In the structure, through the matching of the first arc-shaped notch on the first cam, the second arc-shaped notch on the second cam and the limiting column, when one shaft core rotates, the other shaft core is locked by the limiting column and cannot rotate, namely, the function of two-section switching of a double shaft can be realized, then, the first stop block is formed on one side of the sliding pin, which faces the plate body of the second connecting plate, the first limiting groove extending along the circumferential direction is formed by hollowing one side of the first cam, which faces the plate body, and the stop positioning function after the first cam on the first shaft core is driven to rotate by a first angle (such as 30 degrees) can be realized by the matching of the first stop block and the first limiting groove; a second limit groove extending along the circumferential direction is formed by hollowing one side, facing the plate body, of the second cam, a second stop block is formed on the plate body of the second connecting plate, and the second stop block is matched with the second limit groove, so that the stop positioning function of the second cam driven by the second shaft core after the second cam rotates for a second angle (for example, 90 degrees) can be realized; meanwhile, the second shaft sleeve is arranged on the second shaft core, and in the process that the second shaft sleeve rotates for a second angle along with the second shaft core, the second shaft sleeve drives the sliding pin to slide along the axial direction, so that the first stop block is unlocked to lock the first cam, the unlocking function of the first shaft core is realized, and the first shaft core can continue to rotate for a third angle (for example, 60 degrees); through set up first axle sleeve on first axle core to carry out the backstop cooperation by the third backstop piece that forms on the extension body of first axle sleeve and second connecting plate, realized backstop once more and fix a position the function of first axle core, and through the backstop cooperation of third backstop piece and sliding pin, realized the backstop locate function when first axle core antiport third angle. Therefore, the two shaft cores can rotate alternately in the opening and closing processes, the three-section switching function of the double-shaft hinge is realized, and the requirements of electronic products such as notebook computers with auxiliary screens are met.

Preferably, referring to fig. 2 and 3, a first limiting waist hole 101 is formed in one side of the first connecting plate facing the limiting column, a second limiting waist hole 2012 is formed in one side of the plate body of the second connecting plate facing the limiting column and corresponds to the first limiting waist hole, a first positioning column 601 is formed on one end surface of the limiting column and corresponds to the second limiting waist hole, a second positioning column 602 is formed on the other end surface of the limiting column, the first positioning column is axially locked and inserted into the first limiting waist hole, and the second positioning column is axially locked and inserted into the second limiting waist hole. Like this, through the cooperation of first spacing waist hole and first reference column, the cooperation of the spacing waist hole of second and second reference column can lead to spacing post, make spacing post only can move on the line between first cam and second cam, in order to get into the second arc breach on the second cam under the drive of first cam in or get into the first arc breach on the first cam under the drive of second cam in, thereby when realizing a core rotation, another core is pinned unable pivoted function by spacing post.

Preferably, referring to fig. 4 and 5, the second sleeve is in a shape of a circular tube, a spiral guide groove 801 is formed on a peripheral side surface of the second sleeve, a side surface of the sliding pin facing the second sleeve is an arc surface 902, a circular guide pillar 903 is formed in the arc surface, the arc surface is attached to the peripheral side surface of the second bearing, and the circular guide pillar is inserted in the spiral guide groove. Like this, through the cooperation of circular guide pillar and spiral guide slot, can realize through the rotation of second axle sleeve, drive slide pin is along the gliding function of axial towards the third connecting plate to can satisfy the second axle core pivoted while unblock first axle core's functional requirement.

Preferably, referring to fig. 5 and 6, the avoiding groove partially surrounds the sliding pin, a sliding groove 2023 is formed on a side wall of the avoiding groove, and a sliding strip 904 slidably engaged with the sliding groove is formed on an outer wall of the sliding pin. Like this, through the cooperation of sliding strip with the sliding tray, can carry out the axial direction to the sliding pin, make the sliding pin can follow the steady slip of axial, avoid the sliding pin to rock in the second accommodation space.

Fig. 7 is a schematic structural view of the initial state (zero degree) of the biaxial hinge of the present invention; fig. 8 is a schematic structural view of the dual-axis hinge according to the present invention after the first axis rotates by a first angle (for example, 30 degrees); fig. 9 is a schematic structural view of the second axial core of the dual-axis hinge according to the present invention after rotating a second angle (for example, 90 degrees); fig. 10 is a schematic structural view of the dual-axis hinge according to the present invention after the first axis rotates a third angle (for example, 60 degrees).

Referring to fig. 7, 8, 9 and 10, a biaxial hinge includes a first shaft core 110, a second shaft core 120, a first torsion assembly 210, a second torsion assembly 220 and the auxiliary screen support three-stage switching structure, where the first shaft core is formed with a first shaft stopper 111, the second shaft core is formed with a second shaft stopper 121, the first connecting plate, the first cam, the second connecting plate, the first shaft sleeve and the third connecting plate are sequentially sleeved on the first shaft core and then locked to the first shaft stopper by the first torsion assembly, and the first connecting plate, the second cam, the second connecting plate, the second shaft sleeve and the third connecting plate are sequentially sleeved on the second shaft core and then locked to the second shaft stopper by the second torsion assembly. Therefore, the first connecting plate, the first cam, the second connecting plate, the first shaft sleeve and the third connecting plate of the auxiliary screen support three-section switching structure are locked on the first shaft core through the first torsion assembly, and the first connecting plate, the second cam, the second connecting plate, the second shaft sleeve and the third connecting plate of the auxiliary screen support three-section switching structure are locked on the second shaft core through the second torsion assembly, so that the double-shaft hinge is formed, the double-shaft alternate rotation in the opening and closing processes is realized, the three-section switching function of the double-shaft hinge is realized, and the requirements of electronic products such as notebook computers with auxiliary screens are met. When the first angle is opened at the main screen, the auxiliary screen is not opened, when the second angle is opened at the main screen, the auxiliary screen is opened simultaneously, and when the third angle is opened at the main screen, the auxiliary screen is positioned in an opened state. The first torsion assembly 210 and the second torsion assembly 220 can provide common torsion and tight-fitting positioning.

Preferably, referring to fig. 7, the hinge assembly further includes a closing connecting plate 300, a first closing cam 410 and a second closing cam 420, the first closing cam is sleeved on the first shaft core, the first closing cam can circumferentially stop and axially freely slide relative to the first shaft core, the second closing cam is sleeved on the second shaft core, the second closing cam can circumferentially stop and axially freely slide relative to the second shaft core, the closing connecting plate is simultaneously sleeved on the first shaft core and the second shaft core, the closing connecting plate can circumferentially rotate relative to the first shaft core and the second shaft core, the first closing cam and the closing connecting plate are clamped between the first torsion assembly and the first connecting plate, a first protrusion and a first groove with matched sizes are arranged on a surface of the first closing cam opposite to the closing connecting plate, the second closed cam and the closed connecting plate are clamped between the second torsion assembly and the first connecting plate, and a second protrusion and a second groove which are matched in size are arranged on the surface, opposite to the closed connecting plate, of the second closed cam. During the concrete implementation, can set up first, the second recess on the closed connecting plate orientation is first, a side of second closed cam, set up size and first, the first arch of second recess assorted, second arch on the face of one side of first closed cam and second closed cam orientation closed connecting plate, through mutually supporting of first arch and first recess, mutually supporting of second arch and second recess, can realize the automatic closed function of two-axis hinge at the set angle.

Preferably, referring to fig. 7, one end of the first shaft core is fixedly connected with a first fixing bracket 510 for being embedded in a display screen of the electronic device, and one end of the second shaft core is fixedly connected with a second fixing bracket 520 for being embedded in a base body of the electronic device. The first fixing support and the second fixing support are embedded into a display screen and a base body of an electronic product needing to rotate, so that the display screen and the base body can rotate relatively.

Preferably, referring to fig. 7, each of the first torsion assembly and the second torsion assembly includes a plurality of washers 211, a plurality of butterfly springs 212, and a lock nut 213. As a preferred embodiment, the utility model discloses in first, second torsion subassembly mainly have gasket, butterfly shell fragment and lock nut to constitute, but be limited to this, in other embodiments, can also realize first, second torsion subassembly provide the function of rotary torque through cladding formula torsion structure.

Preferably, referring to fig. 7, a first silencing gasket 610 is disposed between the first closing cam and the butterfly-shaped elastic sheet of the first torsion assembly, a plurality of first bosses are disposed at intervals on one side of the first closing cam facing the first silencing gasket, corresponding to each first boss, a first clamping groove with a size matched with that of the first boss is disposed on the first silencing gasket, and the first boss is clamped in the first clamping groove; a second silencing gasket 620 is arranged between the second closed cam and the butterfly-shaped elastic sheet of the second torque assembly, a plurality of second bosses are arranged on one side, facing the second silencing gasket, of the second closed cam at intervals and correspond to each second boss, a second clamping groove with the size matched with that of each second boss is formed in the second silencing gasket, and the second bosses are clamped in the second clamping grooves. Therefore, through arranging the first silencing gasket between the first closing cam and the butterfly-shaped elastic sheet of the first torsion assembly, arranging the second silencing gasket between the second closing cam and the butterfly-shaped elastic sheet of the second torsion assembly, and through the cooperation of the first clamping groove and the first boss and the cooperation of the second clamping groove and the second boss, abnormal sound generated when the double-shaft hinge is automatically closed can be eliminated.

Following use the notebook computer who has auxiliary screen to use the utility model discloses auxiliary screen supports three-section switching structure and two-axis hinge as the example, carries out the theory of operation and explains as follows:

the first fixed bolster of two-axis hinge inlays in locating notebook computer's main screen, and the second fixed bolster of two-axis hinge inlays in locating notebook computer's base, and supplementary screen inlays in locating the base that is close to main screen and base member hookup location. At the initial state, the display screen and the base body of the notebook computer are in a closed state, at the moment, referring to fig. 7, the first stop block of the sliding pin penetrates through the avoiding through hole in the plate body of the second connecting plate and is inserted into the first limiting groove of the first cam, the limiting column is clamped into the second arc notch of the second shaft core to brake the second shaft core, and at the moment, the first shaft core is in an unlocking state and can rotate freely.

Referring to fig. 8, when opening a main screen first angle (for example 30 degrees), the main screen drives first axle center through first fixed bolster and rotates 30 degrees, first cam is by first backstop piece backstop, and can't continue to rotate, at this moment, first arc breach on the first cam is just towards spacing post, if continue to open the main screen, spacing post will be pushed to in the arc breach of first cam by the second cam to unblock second axle core, brake first axle core, the second axle core is the unblock state this moment, can carry out a free rotation second angle, for example 90 degrees.

Referring to fig. 9, after the main screen is opened by the second angle, the main screen has actually rotated by 120 degrees with respect to the base, and during this rotation of 30 to 120 degrees, the biaxial hinge may drive the auxiliary screen through the connecting member, thereby performing a function of driving the auxiliary screen to be opened. In the process, the second shaft sleeve arranged on the second shaft core drives the sliding pin to slide along the axial direction, so that the first stop block can be unlocked to lock the first cam, and the unlocking function of the first shaft core is realized again; meanwhile, after the second shaft core drives the second cam to rotate by 90 degrees, the other second arc-shaped notch on the second cam just faces the limiting column, if the main screen is continuously opened, the limiting column is pushed into the other second arc-shaped notch of the second cam by the first cam again, so that the first shaft core is unlocked, the second shaft core is locked, and the first shaft core can continuously rotate automatically, for example, by 60 degrees. That is, at this time, the rotation of the main screen between 120 degrees and 180 degrees will not affect the auxiliary screen, which is supported and positioned at a certain position.

Referring to fig. 10, at this time, the third stopping block formed on the first shaft sleeve is in stopping fit with the third limiting groove formed on the extending body of the second connecting plate, so that the function of stopping and positioning the first shaft core again is realized. And in the reverse movement, the third stop block is matched with the stop of the sliding pin, so that the stop positioning function when the first shaft core rotates reversely by a third angle can be realized. Therefore, the two shaft cores can rotate alternately in the opening and closing processes, the three-section switching function of the double-shaft hinge is realized, and the requirements of electronic products such as notebook computers with auxiliary screens are met.

Those skilled in the art can make various modifications and changes to the above embodiments without departing from the spirit of the present invention, and the scope of the present invention is also covered by the appended claims.

Claims

1. The utility model provides an auxiliary screen supports three sections and switches structure which characterized in that: the hinge comprises a first connecting plate (1), a second connecting plate (2), a third connecting plate (3), a first cam (4), a second cam (5), a limiting column (6), a first shaft sleeve (7), a second shaft sleeve (8) and a sliding pin (9), wherein a first arc-shaped notch (401) is formed on the periphery of the first cam, two second arc-shaped notches (501) arranged at intervals are formed on the periphery of the second cam, the second connecting plate comprises a plate body (201) and an extension body (202) formed on one side of the plate body, the first cam and the first shaft sleeve are sleeved on a first shaft core (110) of a double-shaft hinge, and the second cam and the second shaft sleeve are sleeved on a second shaft core (120) of the double-shaft hinge; the first connecting plate, the second connecting plate and the third connecting plate are all sleeved on the first shaft core and the second shaft core simultaneously and can rotate circumferentially relative to the first shaft core and the second shaft core, the first cam and the second cam are clamped between the first connecting plate and the second connecting plate, the first shaft sleeve is clamped between the extension body and the third connecting plate, and the second shaft sleeve is clamped between the plate body and the third connecting plate; the limiting column is arranged in a first accommodating space defined by the first connecting plate, the second connecting plate, the first cam and the second cam, and the sliding pin is arranged in a second accommodating space defined by the plate body, the third connecting plate, the first shaft sleeve and the extension body; one side of the first cam, facing the plate body, is hollowed to form a first limiting groove (402) extending along the circumferential direction, one side of the sliding pin, facing the plate body, is provided with a first stopping block (901), the extending body is provided with an avoiding groove (2021) avoiding the sliding pin to slide along the axial direction, and the plate body is provided with an avoiding through hole (2011) avoiding the first stopping block; the first stop block penetrates through the avoiding through hole and is inserted into the first limiting groove, and the first stop block performs stop positioning on the first cam after the first cam rotates for a first angle along the circumferential direction along with the first shaft core; a second limit groove (502) extending along the circumferential direction is formed in one side, facing the plate body, of the second cam in a hollowed mode, a second stop block (203) is formed on the plate body, the second stop block is inserted into the second limit groove, the second stop block stops and positions the second cam after the second cam rotates along the circumferential direction by a second angle along with the second shaft core, and meanwhile, in the process that the second shaft sleeve rotates along with the second shaft core by the second angle, the second shaft sleeve can drive the sliding pin to slide towards the third connecting plate along the axial direction to enable the first stop block to be separated from the first limit groove; a third limit groove (2022) extending along the circumferential direction is formed in one side, facing the first shaft sleeve, of the extending body in a hollowed mode, a third stop block (701) is formed on the first shaft sleeve, the third stop block is inserted into the third limit groove, the third stop block stops at one side of the third limit groove after continuing to rotate for a third angle after rotating for a first angle along with the first shaft core, and the third stop block stops and positions the sliding pin sliding towards a third connecting plate after rotating for the first angle along with the first shaft core; the limiting column can be switched between the first arc notch and the second arc notch, and is positioned between the first arc notch on the first cam and the second arc notch on the second cam during a first angle, and is positioned between the first arc notch on the first cam and the other second arc notch on the second cam during a second angle, and is positioned in the other second arc notch on the second cam during a third angle.

2. The auxiliary screen support three-segment switching structure of claim 1, wherein: first connecting plate orientation one side of spacing post is equipped with first spacing waist hole (101), orientation on the plate body of second connecting plate one side of spacing post is equipped with the spacing waist hole of second (2012), corresponds first spacing waist hole, be formed with first reference column (601) on the terminal surface of spacing post, correspond the spacing waist hole of second, be formed with second reference column (602) on another terminal surface of spacing post, first reference column axial locking is inserted and is arranged in first spacing waist is downthehole, second reference column axial locking is inserted and is arranged in the spacing waist of second is downthehole.

3. The auxiliary screen support three-segment switching structure of claim 1, wherein: the second shaft sleeve is in a circular tube shape, a spiral guide groove (801) is formed in the peripheral side face of the second shaft sleeve, the side face, facing the second shaft sleeve, of the sliding pin is an arc face (902), a circular guide pillar (903) is formed in the arc face, the arc face is attached to the peripheral side face of the second bearing, and the circular guide pillar is inserted into the spiral guide groove.

4. The auxiliary screen support three-segment switching structure of claim 3, wherein: the avoiding groove partially surrounds the sliding pin, a sliding groove (2023) is formed on the side wall of the avoiding groove, and a sliding strip (904) in sliding fit with the sliding groove is formed on the outer wall of the sliding pin.

5. A biaxial hinge, comprising a first shaft core (110), a second shaft core (120), a first torsion assembly (210), a second torsion assembly (220) and the auxiliary screen support three-stage switching structure of any one of claims 1 to 4, wherein the first shaft core is formed with a first shaft stopper (111), the second shaft core is formed with a second shaft stopper (121), the first connecting plate, the first cam, the second connecting plate, the first shaft sleeve and the third connecting plate are sequentially sleeved on the first shaft core and then locked to the first shaft stopper through the first torsion assembly, and the first connecting plate, the second cam, the second connecting plate, the second shaft sleeve and the third connecting plate are sequentially sleeved on the second shaft core and then locked to the second shaft stopper through the second torsion assembly.

6. The dual axis hinge of claim 5, wherein: the first closed cam is sleeved on the first shaft core, the first closed cam can circumferentially stop and axially freely slide relative to the first shaft core, the second closed cam is sleeved on the second shaft core, the second closed cam can circumferentially stop and axially freely slide relative to the second shaft core, the closed connecting plate is simultaneously sleeved on the first shaft core and the second shaft core and can circumferentially rotate relative to the first shaft core and the second shaft core, the first closed cam and the closed connecting plate are clamped between the first torsion component and the first connecting plate, and a first bulge and a first groove which are matched in size are arranged on the surface of the first closed cam, which is opposite to the closed connecting plate, the second closed cam and the closed connecting plate are clamped between the second torsion assembly and the first connecting plate, and a second protrusion and a second groove which are matched in size are arranged on the surface, opposite to the closed connecting plate, of the second closed cam.

7. A dual axis hinge according to claim 6, wherein: one end rigid coupling of first axle core has first fixed bolster (510) that is used for imbedding in the display screen of electronic equipment, the one end rigid coupling of second axle core has second fixed bolster (520) that is used for imbedding in the base body of electronic equipment.

8. A dual axis hinge according to claim 6, wherein: the first torsion assembly and the second torsion assembly respectively comprise a plurality of gaskets (211), a plurality of butterfly-shaped spring pieces (212) and locking nuts (213).

9. A biaxial hinge as defined in claim 8, wherein: a first silencing gasket (610) is arranged between the first closing cam and the butterfly-shaped elastic sheet of the first torsion assembly, a plurality of first bosses are arranged on one side, facing the first silencing gasket, of the first closing cam at intervals, corresponding to each first boss, a first clamping groove with the size matched with that of each first boss is formed in each first silencing gasket, and each first boss is clamped in the corresponding first clamping groove; and a second silencing gasket (620) is arranged between the second closed cam and the butterfly-shaped elastic sheet of the second torque assembly, a plurality of second bosses are arranged on one side of the second closed cam, facing the second silencing gasket, at intervals and correspond to each second boss, a second clamping groove with the size matched with that of each second boss is arranged on the second silencing gasket, and the second bosses are clamped in the second clamping grooves.