CN214661469U

CN214661469U - Double-shaft hinge

Info

Publication number: CN214661469U
Application number: CN202120729944.8U
Authority: CN
Inventors: 徐安赐
Original assignee: Shenzhen Fushida Communication Co ltd; First Dome Corp
Current assignee: Shenzhen Fushida Communication Co ltd; First Dome Corp
Priority date: 2021-04-09
Filing date: 2021-04-09
Publication date: 2021-11-09
Anticipated expiration: 2031-04-09

Abstract

A double-shaft hinge comprises a track seat, two supporting mechanisms and two synchronous mechanisms. The rail seat comprises a top surface, two pairs of arc-shaped inner slide rails and two pairs of arc-shaped outer slide rails, wherein the two pairs of arc-shaped inner slide rails and the two pairs of arc-shaped outer slide rails are symmetrically arranged on two sides of a central line respectively. The supporting mechanisms are symmetrically arranged on the track base and can rotate between an unfolding position and a folding position relatively in an opening and closing mode. The supporting mechanism comprises a sliding support and two synchronous moving supports, a sliding shaft of the sliding support can slide along the inner sliding rail, and the synchronous moving supports are connected to the two opposite sides of the sliding support, can slide relative to the sliding support and can slide along the outer sliding rail. Each synchronous mechanism comprises two pivots and two pivoting pieces which are respectively arranged on the pivots and can synchronously pivot, and the pivoting pieces are respectively and relatively slidably connected with adjacent synchronous moving brackets so as to enable the supporting mechanism to synchronously rotate. The double-shaft hinge is used for supporting the flexible screen, and the sliding shaft moves along the inner sliding rail and retreats out of the space in the process of rotating to the folding position through the sliding support, so that the flexible screen can be prevented from being damaged.

Description

Double-shaft hinge

Technical Field

The utility model relates to a double-shaft hinge especially relates to a double-shaft hinge suitable for support flexible screen.

Background

In recent years, the display screen technology has been developed to a flexible screen capable of being folded, and portable electronic devices using the flexible screen, such as a folding screen mobile phone, a notebook computer, etc., have become an emerging technical field.

The current foldable electronic devices with flexible screens are classified into inward-folded type and outward-folded type according to the position of the screen inside or outside the housing when the screen is folded. When the inward folding electronic device is folded, the flexible screen is bent into a drop shape or a horseshoe shape, and the bent part in the middle of the flexible screen is easily damaged by being squeezed by the machine shell.

Disclosure of Invention

An object of the utility model is to provide a can solve the biax formula hinge of aforementioned problem.

The utility model discloses a two-axis hinge contains track seat, two supporting mechanism and two lazytongs in some implementation form appearance. The rail seat comprises a top surface, two pairs of inner slide rails and two pairs of outer slide rails, wherein the two pairs of inner slide rails are symmetrically arranged on two sides of a central line respectively, each pair of inner slide rails is located below the top surface, opposite to each other along a first direction parallel to the central line and spaced from each other, and extends in a second direction perpendicular to the central line to form an arc shape, each pair of outer slide rails is located below the top surface, located on two opposite outer sides of the pair of inner slide rails on the same side respectively along the first direction, and extends in the second direction to form an arc shape. The supporting mechanisms are respectively positioned on two sides of the central line, are symmetrically arranged on the rail seat and can relatively open and close between the unfolding position and the folding position, each supporting mechanism comprises a sliding support and two homokinetic supports, each sliding support is provided with a bearing plate part, a supporting body and a sliding shaft, each bearing plate part is provided with a supporting surface and a back surface opposite to the supporting surface, each supporting body is connected to the back surface and is provided with a connecting end part connected with the corresponding sliding shaft, each sliding shaft extends along the first direction, two ends of each sliding shaft are respectively arranged on one of the pair of inner sliding rails to slide along the pair of inner sliding rails, and the homokinetic supports are respectively connected to two opposite sides of the supporting body in the first direction, can slide relative to the supporting bodies, respectively correspond to one of the pair of outer sliding rails and can slide along the pair of outer sliding rails. The synchronous mechanisms are respectively connected to two opposite sides of the rail seat in the first direction, each synchronous mechanism comprises two pivots which are respectively positioned on two sides of the central line and extend along the first direction and two pivoting pieces which are respectively arranged on the pivots and can synchronously pivot, and the pivoting pieces are respectively connected with adjacent synchronous moving supports in a relatively sliding manner so as to enable the supporting mechanisms to synchronously rotate.

In some implementation forms, the inner slide rail is in an arc shape with unequal curvature, when the support mechanism is located at the unfolding position, the sliding shaft of the sliding support is located at one end, close to the center line, of the corresponding inner slide rail, and the support surface and the top surface of the rail seat are coplanar, when the support mechanism is located at the folding position, the sliding shaft of the sliding support is located at one end, away from the center line, of the corresponding inner slide rail, and the support surfaces are gradually inclined in opposite directions and close to the top surface at intervals, so that the distance of one side, close to the top surface, of the support surface is greater than the distance of one side, away from the top surface.

In some embodiments, the support body further has two first sliding grooves located on two opposite sides in the first direction and extending along the second direction, and each of the co-moving brackets has a sliding portion capable of sliding along the corresponding outer sliding rail and extending in an arc shape, and a supporting portion abutting against the back surface of the supporting plate portion and capable of sliding along one of the adjacent first sliding grooves.

In some implementation aspects, each of the simultaneous movement brackets further has a second sliding groove extending along the second direction, each of the pivoting members has a linking portion capable of sliding along the corresponding second sliding groove, when the supporting mechanism is located at the unfolding position, the linking portion is located at one end of the corresponding second sliding groove far away from the center line, and when the supporting mechanism is located at the folding position, the linking portion is located at one end of the corresponding second sliding groove close to the center line.

In some embodiments, each of the synchronizing mechanisms further includes a gear seat fixedly connected to the rail seat and a synchronizing member rotatably disposed on the gear seat around a self-axis, the synchronizing member has a shaft portion extending in the second direction and two bevel gears respectively connected to two opposite ends of the shaft portion, the bevel gears are respectively disposed corresponding to the pivoting members, each of the pivoting members further has a pivot portion connecting the corresponding pivot, a main body portion connecting the pivot portion and the linking portion, and a bevel gear portion formed on the pivot portion and engaged with the corresponding bevel gear, and the pivoting members are synchronously pivoted by the synchronizing member.

In some embodiments, each of the synchronizing mechanisms further includes two torsion units respectively disposed on the pivot to provide the positioning torsion.

In some embodiments, the gear seat has a main member and a limiting member, the main member has two fixing holes for the pivot to penetrate through and limit the pivot, and a limiting groove for accommodating the synchronizing member, the limiting member has a plate body and a limiting block protruding from the plate body toward the main member, and the limiting block and the main member limit the synchronizing member together.

In some embodiments, the rail seat is formed by combining two seat bodies side by side, each pair of inner slide rails is formed on the opposite inner sides of the seat bodies, and each pair of outer slide rails is formed on the opposite outer sides of the seat bodies.

In some embodiments, the supporting plate portion extends toward two opposite sides along the first direction compared to the supporting body, so that the portions of the back surface of the supporting plate portion on the two sides of the supporting body can be abutted by the same movable support.

The utility model discloses have following efficiency: in the process that the sliding support rotates to the folding position, the sliding shaft moves along the inner sliding rail and retreats to form a space, so that the flexible screen supported by the double-shaft hinge can be ensured not to be pulled or extruded to the flexible screen in the bending process, and the flexible screen can be prevented from being damaged. Moreover, the integral structure of the double-shaft hinge can be thinned and modularized, and the double-shaft hinge can correspond to flexible screens with different flexural properties by only replacing the rail seat with the inner sliding rail corresponding to different flexible screen designs.

Drawings

Other features and advantages of the present invention will become apparent from the following detailed description of the preferred embodiments with reference to the accompanying drawings, in which:

fig. 1 is a perspective view of an embodiment of a dual-axis hinge of the present invention;

FIG. 2 is an exploded perspective view of the embodiment;

FIG. 3 is a side view of the embodiment in the deployed position;

fig. 4 is an exploded perspective view of the rail housing of the embodiment;

FIG. 5 is an exploded perspective view of the support mechanism of the embodiment;

FIG. 6 is a side view of the embodiment in a stowed position;

FIG. 7 is a side view illustrating the relative relationship of the sliding bracket of the support mechanism to the track base in the deployed position;

fig. 8 is a side view illustrating the relative relationship between the sliding bracket and the rail seat in the retracted position;

FIG. 9 is a side view illustrating the relative relationship of the co-acting support of the support mechanism to the rail mount in the deployed position;

fig. 10 is a side view illustrating the relative relationship between the simultaneous movement bracket and the rail seat in the retracted position;

fig. 11 is an exploded perspective view of the synchronization mechanism of the embodiment;

FIG. 12 is an exploded perspective view from another perspective of FIG. 11; and

FIG. 13 is a fragmentary top plan view of the embodiment with the main member of the gear seat removed to illustrate the meshing relationship of the synchronizing member and the two pivoting members.

Detailed Description

Referring to fig. 1 to 3, an embodiment of a dual-axis hinge 100 of the present invention is suitable for being disposed in an electronic device (not shown) having a flexible screen S, for connecting two housings (not shown) that can be opened and closed relatively and supporting the flexible screen S, wherein the dual-axis hinge 100 includes a track base 10, two supporting mechanisms 2 and two synchronizing mechanisms 3.

Referring to fig. 1, 2 and 4, the rail seat 10 includes a top surface 11, two pairs of inner slide rails 12 symmetrically disposed on two sides of a center line C, and two pairs of outer slide rails 13 symmetrically disposed on two sides of the center line C. Each pair of inner slide rails 12 is located below the top surface 11, opposite to and spaced apart from each other along a first direction D1 parallel to the center line C, and extends in an arc shape along a second direction D2 perpendicular to the center line C. Each pair of outer slide rails 13 is located below the top surface 11, located on two opposite outer sides of the pair of inner slide rails 12 along the first direction D1, and extends in an arc shape in the second direction D2. In this embodiment, the rail seat 10 is formed by combining two seat bodies 1 side by side, and a connecting pin 14 penetrates through the seat bodies 1 to strengthen the bonding strength. Each pair of inner slide rails 12 is formed on the opposite inner side of the seat body 1, and each pair of outer slide rails 13 is formed on the opposite outer side of the seat body 1.

Referring to fig. 1, 2 and 5, the supporting mechanisms 2 are respectively located at two sides of the center line C, symmetrically disposed on the rail seat 10, and can rotate between an unfolded position (as shown in fig. 1 and 3) and a folded position (as shown in fig. 6). Each support mechanism 2 comprises a sliding support 21 and two co-acting supports 22. The sliding bracket 21 has a support plate 211, a support body 212 and a sliding shaft 213. The supporting plate 211 has a supporting surface 211a and a back surface 211b opposite to the supporting surface 211 a. The supporting body 212 is connected to the back surface 211b and has a connecting end 212a connected to the sliding shaft 213, and the connecting end 212a protrudes toward the center line C than the supporting plate 211. The sliding shaft 213 extends along the first direction D1 and has two ends respectively disposed on one of the pair of inner sliding rails 12 to slide along the pair of inner sliding rails 12. The simultaneous movement brackets 22 are respectively connected to two opposite sides of the supporting body 212 in the first direction D1 and can slide relative to the supporting body 212, and respectively correspond to one of the pair of outer sliding rails 13 and can slide along the pair of outer sliding rails 13.

In this embodiment, the support plate portion 211 of the sliding bracket 21 is integrally formed with the support body 212, and the sliding shaft 213 is separately formed to penetrate the connection end portion 212 a. However, in an alternative embodiment, the sliding shaft 213 may be integrally formed with the connecting end portion 212a, that is, the supporting plate portion 211, the supporting body 212 and the sliding shaft 213 of the sliding bracket 21 may be integrally formed.

In this embodiment, the supporting body 212 further has two first sliding slots 212b located on two opposite sides in the first direction D1 and extending along the second direction D2. The supporting plate 211 extends along the first direction D1 to opposite sides of the supporting body 212, so that the portions of the back surface 211b of the supporting plate 211 at both sides of the supporting body 212 can be abutted by the same moving bracket 22. Each of the simultaneous movement brackets 22 has a sliding portion 221 capable of sliding along the corresponding outer slide rail 13 and extending in an arc shape, and a supporting portion 222 abutting against the back surface 211b of the supporting plate portion 211 and capable of sliding along one of the adjacent first sliding grooves 212 b. In addition, in the present embodiment, each of the simultaneous movement brackets 22 further has a second sliding groove 223 extending along the second direction D2.

As shown in fig. 7, when the supporting mechanism 2 is located at the unfolding position, the sliding shaft 213 of the sliding bracket 21 is located at an end of the inner sliding rail 12 close to the central line C and the supporting surface 211a is coplanar with the top surface 11 of the rail seat 10, so as to support the flat flexible screen S. As shown in fig. 8, when the supporting mechanism 2 is located at the retracted position, the sliding shaft 213 of the sliding bracket 21 is located at an end of the corresponding inner sliding rail 12 away from the center line C, and the supporting surfaces 211a are gradually inclined and spaced from each other with respect to the top surface 11, so that a distance L1 of the supporting surfaces 211a at a side close to the top surface 11 is greater than a distance L2 at a side away from the top surface 11. That is, during the process of rotating the sliding bracket 21 to the retracted position, the sliding shaft 213 moves along the inner sliding rail 12 and leaves the space to accommodate the flexible screen S forming a horseshoe shape. In this embodiment, the inner slide rail 12 is an arc with unequal curvature for guiding the moving path of the slide shaft 213, and the gradual change of the arc curvature is obtained by calculating the length change of the flexible screen S during the bending process, so that the slide bracket 21 can change the slide track in accordance with the deflection deformation of the flexible screen S. Therefore, the flexible screen S is ensured not to be pulled or extruded by the action of the sliding support 21 in the bending process of the flexible screen S, and the flexible screen S can be prevented from being damaged. The curvature change of the inner slide rail 12 needs to be adjusted corresponding to the flexing characteristics of different flexible screens S, and if a similar flexible screen S is to be used, only the rail seat 10 needs to be replaced, and other components do not need to be redesigned.

Referring to fig. 9 and 10, in the present embodiment, the outer slide rail 13 is arc-shaped, and one end close to the center line C is a closed end, and one end far from the center line C is an open end. The shape and size of the sliding part 221 of the simultaneous movement bracket 22 are matched with the outer slide rail 13, as shown in fig. 9, when the supporting mechanism 2 is located at the unfolding position, the sliding part 221 of the simultaneous movement bracket 22 is accommodated in the corresponding outer slide rail 13, and the end close to the center line C is limited by the closed end of the corresponding outer slide rail 13. As shown in fig. 10, when the supporting mechanism 2 is located at the retracted position, a part of the sliding portion 221 of the simultaneous movement bracket 22 moves out of the corresponding outer slide rail 13.

Referring to fig. 2 and 11 to 13, the synchronizing mechanisms 3 are respectively connected to opposite sides of the rail seat 10 in the first direction D1. Each synchronizing mechanism 3 comprises two pivot shafts 31 respectively located at two sides of the center line C and extending along the first direction D1, and two pivot members 32 respectively disposed on the pivot shafts 31 and capable of synchronously pivoting, wherein the pivot members 32 are respectively connected with the adjacent synchronizing brackets 22 in a relatively slidable manner and can drive the supporting mechanism 2 to synchronously rotate. Through the synchronous mechanisms 3 are respectively positioned on two sides of the supporting mechanism 2, the supporting mechanism 2 is driven symmetrically on two sides, part loss caused by uneven force application on one side can be avoided, and the service life and the reliability are prolonged.

In this embodiment, each of the synchronizing mechanisms 3 further includes a gear seat 33 fixedly connected to the track seat 10, a synchronizing member 34 rotatably disposed on the gear seat 33 around its own axis, and two torsion units 35 respectively disposed on the pivot shafts 31 for providing a positioning torsion. The gear base 33 has a main member 331 and a limiting member 332. The main member 331 has two fixing holes 331a for the pivot 31 to pass through and limit the pivot 31, and a limiting groove 331b for accommodating the synchronizer 34. The limiting element 332 has a plate body 332a and a limiting block 332b protruding from the plate body 332a toward the main member 331, and the limiting block 332b and the main member 331 limit the synchronizing element 34 together. The pivot 31 also passes through the plate 332a to provide the torsion unit 35. The synchronizing member 34 has a shaft portion 341 extending along the second direction D2 and two bevel gears 342 connected to two opposite ends of the shaft portion 341, respectively, wherein the bevel gears 342 are disposed corresponding to the pivoting members 32, respectively. Each pivoting member 32 has a linking portion 321 capable of sliding along the second sliding slot 223 of the corresponding linking bracket 22, a pivoting portion 322 connecting the corresponding pivot 31, a main body portion 323 connecting the pivoting portion 322 and the linking portion 321, and a tooth portion 324 formed on the pivoting portion 322 and engaged with the corresponding bevel gear 342, and the pivoting members 32 are synchronously pivoted by the synchronizing member 34. As shown in fig. 3, when the supporting mechanism 2 is located at the unfolding position, the linking portion 321 of the pivoting member 32 is located at an end of the second sliding groove 223 away from the central line C, and as shown in fig. 6, when the supporting mechanism 2 is located at the folding position, the linking portion 321 is located at an end of the second sliding groove 223 close to the central line C.

Referring to fig. 2, fig. 3 and fig. 6, in the present embodiment, when a user applies a force to one of the supporting mechanisms 2, the pivoting member 32 that pivots synchronously links the moving bracket 22 of the other supporting mechanism 2, and the moving bracket 22 links the sliding bracket 21 of the other supporting mechanism 2, so that the supporting mechanisms 2 located at two sides of the center line C can open and close synchronously between the unfolding position and the folding position.

In summary, when the sliding support 21 rotates to the retracted position, the sliding shaft 213 moves along the inner slide rail 12 and moves out of the space, so that the flexible screen S is prevented from being damaged by the sliding support 21 without being pulled or pressed by the flexible screen S during the bending process of the flexible screen S. Moreover, the overall structure of the biaxial hinge 100 can be made thin and modularized, and only the rail seat 10 having the inner slide rail 12 designed corresponding to different flexible screens S needs to be replaced to correspond to flexible screens S with different flexural properties.

The above description is only an example of the present invention, and the scope of the present invention should not be limited thereby, and all the simple equivalent changes and modifications made according to the claims and the description of the present invention are still within the scope of the present invention.

Claims

1. A dual-axis hinge, comprising: comprises the following steps:

the track seat comprises a top surface, two pairs of inner slide rails and two pairs of outer slide rails, wherein the two pairs of inner slide rails are symmetrically arranged on two sides of a central line respectively, each pair of inner slide rails are positioned below the top surface, opposite to each other along a first direction parallel to the central line at intervals and extend in a second direction vertical to the central line to form an arc shape, each pair of outer slide rails are positioned below the top surface, positioned on two opposite outer sides of the inner slide rails on the same side along the first direction respectively, and extend in the second direction to form an arc shape;

two supporting mechanisms which are respectively positioned at two sides of the central line, are symmetrically arranged on the rail seat and can relatively open and close between an unfolding position and a folding position, each supporting mechanism comprises a sliding support and two homokinetic supports, each sliding support is provided with a bearing plate part, a supporting body and a sliding shaft, each bearing plate part is provided with a supporting surface and a back surface opposite to the supporting surface, each supporting body is connected to the back surface and is provided with a connecting end part connected with the sliding shaft, each sliding shaft extends along the first direction, two ends of each sliding shaft are respectively arranged on one of the pair of inner sliding rails to slide along the pair of inner sliding rails, and the homokinetic supports are respectively connected to two opposite sides of the supporting body in the first direction, can slide relative to the supporting bodies, are respectively arranged corresponding to one of the pair of outer sliding rails and can slide along the pair of outer sliding rails; and

the two synchronous mechanisms are respectively connected to two opposite sides of the track seat in the first direction, each synchronous mechanism comprises two pivots which are respectively positioned on two sides of the central line and extend along the first direction and two pivoting pieces which are respectively arranged on the pivots and can synchronously pivot, and the pivoting pieces are respectively connected with the adjacent synchronous moving supports in a relatively sliding manner so as to enable the supporting mechanisms to synchronously rotate.

2. A dual-axis hinge according to claim 1, wherein: the inner sliding rail is in an arc shape with unequal curvature, when the supporting mechanism is located at the unfolding position, the sliding shaft of the sliding support is located at one end, close to the central line, of the corresponding inner sliding rail and the top surface of the supporting surface and the rail seat are coplanar, when the supporting mechanism is located at the folding position, the sliding shaft of the sliding support is located at one end, far away from the central line, of the corresponding inner sliding rail, the supporting surface is gradually inclined in opposite directions relative to the top surface and is close to the top surface and spaced from the top surface, and the distance of the supporting surface at one side close to the top surface is larger than that of one side far away from the top surface.

3. A dual-axis hinge according to claim 1, wherein: the support body is also provided with two first sliding grooves which are positioned at two opposite sides in the first direction and extend along the second direction, and each synchronous moving support is provided with a sliding part which can slide along the corresponding outer sliding rail and extends in an arc shape and a bearing part which is abutted against the back surface of the bearing plate part and can slide along one of the adjacent first sliding grooves.

4. A dual axis hinge according to claim 3, wherein: each of the simultaneous movement supports is also provided with a second sliding groove extending along the second direction, each of the pivoting pieces is provided with a linking part capable of sliding along the corresponding second sliding groove, when the supporting mechanism is positioned at the unfolding position, the linking part is positioned at one end, far away from the central line, of the corresponding second sliding groove, and when the supporting mechanism is positioned at the folding position, the linking part is positioned at one end, close to the central line, of the corresponding second sliding groove.

5. A dual-axis hinge according to claim 4, wherein: each synchronizing mechanism further comprises a gear seat fixedly connected with the rail seat and a synchronizing member rotatably arranged on the gear seat around a self-axis, the synchronizing member is provided with a shaft rod part extending along the second direction and two bevel gears respectively connected to two opposite ends of the shaft rod part, the bevel gears are respectively arranged corresponding to the pivoting members, each pivoting member is further provided with a pivoting part connected with a corresponding pivot, a main body part connected with the pivoting part and the linkage part and a bevel gear part formed on the pivoting part and meshed with the corresponding bevel gear, and the pivoting members are synchronously pivoted through the synchronizing member.

6. A dual-axis hinge according to claim 5, wherein: each synchronizing mechanism further comprises two torsion units respectively arranged on the pivot shaft so as to provide positioning torsion.

7. A dual-axis hinge according to claim 5, wherein: the gear seat is provided with a main component and a limiting part, the main component is provided with two fixing holes for the pivot to penetrate through and limit the pivot, and a limiting groove for accommodating the synchronizing part, the limiting part is provided with a plate body and a limiting block protruding from the plate body to the main component, and the limiting block and the main component limit the synchronizing part together.

8. A dual-axis hinge according to claim 1, wherein: the rail seat is formed by combining two seat bodies side by side, each pair of inner slide rails is respectively formed on the opposite inner sides of the seat bodies, and each pair of outer slide rails is respectively formed on the opposite outer sides of the seat bodies.

9. A dual-axis hinge according to claim 1, wherein: the bearing plate part extends towards two opposite sides along the first direction compared with the supporting body, so that the parts of the back surface of the bearing plate part at the two sides of the supporting body can be abutted by the same-moving support.