CN219317425U - Multi-link hinge - Google Patents

Abstract

A multi-link hinge includes a link unit and a support plate unit. The connecting rod unit comprises a base rod, two supporting connecting rods, two synchronous connecting rods and two first supporting rods. The base rod is provided with a first rod body, two base connecting end parts respectively positioned at the opposite ends of the first rod body and two first middle pivoting parts positioned between the base connecting end parts. Each synchronous connecting rod is provided with a first linkage end part pivoted on the corresponding first middle pivoting part and a second linkage end part opposite to the first linkage end part. The support plate unit comprises two first support plates respectively connected with the first support rods, the connecting rod unit can rotate between an unfolding position and a folding position, when the support plate unit is in the unfolding position, the second linkage end parts are close to each other and the first support plates are flush, when the support plate unit is in the folding position, the second linkage end parts are far away from each other to form an avoidance space, and the first support plates are obliquely extended close to each other.

Description

Multi-link hinge

Technical Field

The present utility model relates to a hinge, and more particularly, to a multi-link hinge.

Background

In recent years, flexible screens are widely used in various folding devices, which can be divided into an inward folding structure and an outward folding structure, and when the flexible screen is used in a folding device belonging to the inward folding structure, an existing hinge is designed to avoid damage caused by improper stress of the flexible screen due to insufficient space when the folding device is in a folded state, so that the space is increased in width, and the flexible screen can be actually accommodated.

Disclosure of Invention

It is therefore an object of the present utility model to provide a multi-link hinge that solves at least one of the above-mentioned problems.

The utility model relates to a multi-link hinge, which comprises a link unit, wherein the link unit comprises a base rod, a first rod body, two base connecting ends respectively positioned at the opposite ends of the first rod body and two first middle pivoting parts positioned between the base connecting ends, two support links respectively pivoted at the base connecting ends, each support link is provided with a first pivoting end pivoted at the corresponding base connecting end and a second pivoting end opposite to the first pivoting end, two synchronous links respectively pivoted at the first middle pivoting parts, each synchronous link is provided with a first linkage end pivoted at the corresponding first middle pivoting part and a second linkage end opposite to the first linkage end, the first linkage ends of the synchronous links are mutually meshed, and two first support rods are respectively pivoted at the second pivoting ends and the second linkage ends; and the support plate unit comprises two first support plates respectively connected with the first support rods, the connecting rod unit can rotate between an unfolding position and a folding position, when the unfolding position is adopted, the second linkage end parts are close to each other and the first support plates are flush, when the folding position is adopted, the second linkage end parts are far away from each other to form an avoidance space, and the first support plates are inclined and extend close to each other.

In some embodiments, each first support rod further has a second connection end opposite to the first connection end, the link unit further includes two rotation seats respectively pivoted to the first pivot ends, and two second support rods respectively rotatably disposed on the rotation seats and respectively pivoted to the second connection ends, and the support plate unit further includes two second support plates respectively connected to the second support rods and abutting against the second connection ends.

In some embodiments, each second support rod has a support connection end connected to the second support plate, a support pivot portion pivoted to the corresponding second connection end, and a support rotation end opposite to the support connection end, and each rotation seat forms an arc-shaped rotation groove, where the support rotation end is rotatably accommodated in the corresponding rotation groove.

In some embodiments, each second support rod further has a second support rod body connected to the support pivot portion and the support rotation end portion, and the second support rod body has an inclined surface for the first support plate to abut against and extend obliquely when the second support rod body is in the retracted position.

In some embodiments, each support rotating end includes a connection block connecting the second support rod and an arcuate flange extending laterally from the connection block to extend into the corresponding rotating slot.

In some embodiments, each support link further has a second rod body connected to the first pivot end and the second pivot end, and a second side recess formed at a side edge of the second rod body, and the second pivot ends of the support links are mutually separated and mutually approached during the conversion process of the unfolding position and the folding position, so that the second linkage end of the synchronous link is turned into or out of the second side recess.

In some embodiments, each synchronization link further has a third rod body connected to the first linking end and the second linking end, and a third side recess formed at a side edge of the third rod body, and when the link unit is in the retracted position, the third side recess is configured to allow the corresponding first support plate to extend in.

In some embodiments, each first support rod further has a second connection end opposite to the first connection end, the link unit further includes two rotation links respectively pivoted to the first pivot ends and two second support rods respectively pivoted to the rotation links and the second connection ends, and the support plate unit further includes two second support plates respectively connected to the second support rods and abutting against the second connection ends.

In some embodiments, each second support bar has a support connection end connected to the second support plate, a support pivot portion pivotally disposed at the corresponding second connection end, and a support rotation end opposite to the support connection end and pivotally disposed at the rotation link.

The utility model has the beneficial effects that: when the connecting rod unit is at the folding position, the second linkage end parts are mutually far away to form an avoidance space for accommodating the bending part of the flexible screen, so that the flexible screen is prevented from being extruded and damaged. And because the first supporting plates are inclined and extend close to each other, the width of the avoidance space at the position close to the base rod can be further increased, and the width at the position far from the base rod is further reduced, so that the overall folding thickness of the hinge is reduced.

Drawings

Other features and advantages of the utility model will be apparent from the following description of the embodiments with reference to the accompanying drawings, in which:

FIG. 1 is a perspective view of a first embodiment of a multi-link hinge of the present utility model disposed between two housings for a flexible screen, the housings being in a use state;

FIG. 2 is a perspective view illustrating the body in a retracted state;

FIG. 3 is an exploded perspective view of FIG. 1;

FIG. 4 is a perspective view of the first embodiment;

FIG. 5 is a fragmentary, exploded perspective view of the first embodiment;

FIG. 6 is a front view of the first embodiment illustrating a link unit of the first embodiment in a deployed position;

FIG. 7 is a rear view of the first embodiment illustrating the linkage unit of the first embodiment in the deployed position;

FIG. 8 is a front view of the first embodiment illustrating the linkage unit of the first embodiment in a collapsed position;

fig. 9 is a rear view of the first embodiment illustrating the link unit of the first embodiment in the collapsed position;

FIG. 10 is a fragmentary, exploded perspective view of a second embodiment of the multi-link hinge of the present utility model;

FIG. 11 is a front view of the second embodiment illustrating a link unit of the second embodiment in a deployed position;

FIG. 12 is a rear view of the second embodiment illustrating the linkage unit of the second embodiment in the deployed position;

FIG. 13 is a front view of the second embodiment illustrating the linkage unit of the second embodiment in a collapsed position; a kind of electronic device with high-pressure air-conditioning system

Fig. 14 is a rear view of the second embodiment illustrating the link unit of the second embodiment in the collapsed position.

Detailed Description

Referring to fig. 1 to 3, a first embodiment of a multi-link hinge 10 of the present utility model is suitable for being disposed between two machine bodies 20 for being disposed together by a flexible screen 30, thereby forming a foldable electronic device. The machine body 20 is changeable between a use state in which the machine bodies 20 are spread out parallel to each other and a folded state in which the machine bodies 20 are folded over each other. The multi-link hinge 10 includes three link units 1 and a support plate unit 2.

For ease of understanding, the following figures and description will be described with reference to one link unit 1, and referring to fig. 4 to 6, each link unit 1 includes two base bars 11, two support links 12, two synchronization links 13, two first support bars 14, four rotation seats 15, two second support bars 16, ten shafts 17, and four bushings 18. The base rods 11 are disposed at intervals, and each base rod 11 has a first rod body 111, two base connecting end portions 112 respectively located at opposite ends of the first rod body 111, two first middle pivot portions 113 located between the base connecting end portions 112, two first concave portions 114 formed at one side edge of the first rod body 111 and respectively located between two adjacent first middle pivot portions 113 and the base connecting end portions 112, and two first concave spaces 115 respectively defined by the first concave portions 114. The support links 12 are respectively pivoted between the base connection ends 112 of the base bars 11 by two shafts 17, and each support link 12 has a first pivot end 122 pivoted to the corresponding base connection end 112, a second pivot end 123 opposite to the first pivot end 122, a second rod 121 connecting the first pivot end 122 and the second pivot end 123, a second side recess 124 formed at one side edge of the second rod 121, and a second side recess space 125 defined by the second side recess 124. The synchronous links 13 are respectively pivoted to the first middle pivoting portions 113 of the base rods 11 by two shafts 17, and each synchronous link 13 has a first linking end 132 pivoted to the corresponding first middle pivoting portion 113, a second linking end 133 opposite to the first linking end 132, a third rod 131 connecting the first linking end 132 and the second linking end 133, a third side recess 134 formed at one side edge of the third rod 131, and a third side recess space 135 defined by the third side recess 134. The outer edge of each first linkage end 132 forms a plurality of gear teeth, and the first linkage ends 132 are engaged with each other through the gear teeth.

The first supporting rod 14 is pivoted to the second pivot end 123 of the supporting link 12 and the second link end 133 of the synchronizing link 13 by four shafts 17, and is located above one of the base rods 11 and between the supporting link 12 and the rotating base 15. Each first support bar 14 has a first connecting end 141 pivoted to the corresponding second pivot end 123 and the second link end 133, a second connecting end 142 opposite to the first connecting end 141, and two first engaging protrusions 143. The rotation seat 15 may be divided into two pairs, and is pivoted to the first pivot end 122 of the support link 12 and the base connection end 112 of the base rod 11 by two shafts 17, respectively. The two pairs of rotating seats 15 are spaced from each other by means of two sleeves 18 which are fitted over the shafts 17. Each rotating seat 15 forms a rotating groove 151 having a circular arc shape. The second support rods 16 are respectively pivoted to the second connecting ends 142 of the first support rods 14 by two shaft rods 17 and rotatably disposed between the two pairs of rotating seats 15, and the first support rods 14 and the second support rods 16 are sleeved on the shaft rods 17 by two shaft sleeves 18 to be spaced apart from each other. Each second support bar 16 has a support connection end 162 connected to the support plate unit 2, a support pivot 163 pivotally provided to the corresponding second connection end 142, a support pivot end 164 opposite to the support connection end 162, a second support rod 161 connecting the support pivot 163 and the support pivot end 164, and two second engagement projections 165. The second support rod 161 has a slope 161a, so that the thickness of the second support rod 161 decreases from the support pivot 163 toward the support pivot 164. Each support rotating end 164 includes an arc-shaped connection block 164a connected to the second support rod 161 and two arc-shaped flanges 164b extending laterally from two sides of the arc-shaped connection block 164a to extend into the corresponding rotating grooves 151 of the two pairs of rotating seats 15. The shape of the arc-shaped connection block 164a is not limited to an arc shape, and may be a non-arc shape in other embodiments.

The support plate unit 2 includes two first support plates 21 respectively connected to the first support rods 14 and two second support plates 22 respectively connected to the second support rods 16 and abutting against the second connection ends 142. Each first support plate 21 has two first engagement holes 211 spaced apart from each other, and the first engagement holes 211 are configured to engage with the first engagement protrusions 143 of the first support rods 14 to connect the first support plates 21 to the first support rods 14. Each second support plate 22 has two second engagement holes 221 spaced apart from each other, and the second engagement holes 221 are adapted to be engaged with the second engagement protrusions 165 of the second support plates 16 to connect the second support plates 22 to the second support plates 16. In the present embodiment, the second support plate 22 is fixedly connected to the flexible screen 30, but not limited to this, and in other embodiments, the flexible screen 30 may be disposed to support the flexible screen 30 in an abutting manner, and the flexible screen 30 is fixedly disposed on the two machine bodies 20.

Referring to fig. 5 to 9, the link unit 1 can be rotated synchronously by the synchronous links 13, so that the bodies 20 (see fig. 1) connected to both sides of the multi-link hinge 10 can be operated in a synchronous and symmetrical manner, and the link unit 1 can be operated to rotate between an unfolded position and a folded position. When in the unfolded position, the second linking end portions 133 of the synchronous links 13 are close to each other to form a supporting point, and the first supporting rods 14 and the second supporting rods 16 extend laterally, so that the first connecting end portions 141 and the supporting rotating end portions 164 are close to each other, and the first supporting plates 21 and the second supporting plates 22 can be supported by the second linking end portions 133 and can be in a flush shape to support the flexible screen 30. When a user wants to fold the machine body 20, the link unit 1 rotates towards the folding position, the second linkage end 133 of the synchronous link 13 and the second pivot end 123 of the support link 12 are both far away from each other, so that the second linkage end 133 is turned into the second side concave space 125 of the support link 12, but the second pivot end 123 is not completely far away from each other in the pivoting process, and slightly approaches each other after a distance away from each other, the first connection end 141 of the first support rod 14 and the support rotation end 164 of the second support rod 16 also pivot upwards along with the first support plate 21 and the second support plate 22 to fold away from each other, the arc-shaped flange 164b then rotates upwards along the rotation groove 151, so that one end of the first support plate 21 stretches into the third side concave space 135 of the synchronous link 13 and the first side concave space 115 of the base rod 11, the first support plate 21 continuously rotates to the second support plate 161a, so that the width of the second support rod 161 is gradually reduced as to form a more gradually approaches the second support rod body 161 and the second support rod body 161 is gradually approaches the base rod 11, and the width of the second support rod is gradually reduced as the end 142 is further contracted toward each other due to the slope of the first support rod is further contracted toward the end portion 10, and the end portion is further contracted toward the base rod 11.

It should be noted that, in the present embodiment, the number of the base rods 11 of each link unit 1 is two, the number of the rotating seats 15 is two to four, and each supporting rotating end 164 has two arc-shaped flanges 164b, which is to make the overall structure of the link unit 1 more compact without sliding in the extending direction of the shaft 17, but not limited thereto. In other embodiments, the number of base bars 11 may be one, the number of swivel seats 15 may be a pair of two, and each support swivel end 164 has only one arcuate flange 164b extending into the swivel groove 151 of the corresponding swivel seat 15.

Referring to fig. 10, a second embodiment of the multi-link hinge 10' of the present utility model is similar to the first embodiment, except that the link unit 1 of the second embodiment does not include the rotating base 15 but includes two rotating links 19 pivotally mounted to the first pivot end 112 and the second support bar 16, respectively. The rotation link 19 has a first rotation end 191 pivoted to the corresponding first pivot end 112 and a second rotation end 192 opposite to the first rotation end 191 and pivoted to the corresponding second support bar 16. The second support rods 16 are also different from the first embodiment, the second support rods 16 are respectively pivoted to the rotation link 19 and the second connection end 142, each second support rod 16 has a support connection end 162 connected to the second support plate 22, a support pivot 163 pivoted to the corresponding second connection end 142, and a support rotation end 164' opposite to the support connection end 162 and pivoted to the rotation link 19. The number of the shaft rods 17 is two more than that of the first embodiment, and the second rotating ends 192 of the rotating links 19 are respectively pivoted to the second supporting rods 16 by the shaft rods 17.

Referring to fig. 10 to 14, the link unit 1 can also be rotated synchronously by the synchronous links 13, so that the bodies 20 (see fig. 1) connected to both sides of the multi-link hinge 10 can be operated in a synchronous and symmetrical manner, and the link unit 1 can be operated to rotate between an unfolded position and a folded position. When in the unfolded position, the second linkage end 133 of the synchronous link 13 is close to each other, and the first support bar 14 and the second support bar 16 extend left and right, so that the first connection end 141 and the support rotation end 164' are close to each other, and the first support plate 21 and the second support plate 22 are flush to support the flexible screen 30. When the user wants to fold the machine body 20, the link unit 1 will rotate towards the folding position, the second linkage end 133 of the synchronous link 13 and the second pivot end 123 of the support link 12 are both far away from each other, so that the second linkage end 133 rotates into the second side concave space 125 of the support link 12, the first connection end 141 of the first support rod 14 and the support pivot end 164 'of the second support rod 16 also pivot upwards along with the first support plate 21 and the second support plate 22, the support pivot end 164' pivots relative to the second pivot end 192 of the rotary link 19 and slightly pulls the second pivot end 192 to pivot away from each other, but the second pivot end 192 is not completely away from each other during the pivoting process, and slightly approaches each other after a distance away from each other, and the first support plate 21 will continuously pivot to abut against the inclined surface 161a of the second support rod 161 to make the first support rod 14 to tilt away from each other, so as to form the screen 30, which can be folded and folded away from each other.

In summary, in the multi-link hinge 10, 10' of the present utility model, when the link unit 1 is at the folding position, the second linkage end 133 is far away from each other to form an avoidance space S for accommodating the bending portion of the flexible screen 30, so as to avoid the flexible screen 30 from being damaged by extrusion. Moreover, since the first support plates 21 extend obliquely close to each other, the width of the avoiding space S near the base rod 11 can be further increased, and the width of the avoiding space S far from the base rod 11 can be further reduced, so as to reduce the overall folding thickness of the multi-link hinges 10, 10', thereby achieving the purpose of the present utility model.

The foregoing is merely illustrative of the present utility model and is not intended to limit the scope of the utility model, which is defined by the appended claims and their equivalents.

Claims (9)

1. A multi-link hinge, characterized by: the multi-link hinge includes:

at least one link unit comprising

The base rod is provided with a first rod body, two base connecting end parts respectively positioned at the opposite ends of the first rod body and two first middle pivoting parts positioned between the base connecting end parts,

two support connecting rods are respectively pivoted at the base connecting end parts, each support connecting rod is provided with a first pivoting end part pivoted at the corresponding base connecting end part and a second pivoting end part opposite to the first pivoting end part,

the two synchronous connecting rods are respectively pivoted at the first middle pivoting parts, each synchronous connecting rod is provided with a first linkage end part pivoted at the corresponding first middle pivoting part and a second linkage end part opposite to the first linkage end part, the first linkage end parts of the synchronous connecting rods are mutually meshed,

the two first support rods are respectively pivoted at the second pivoting end part and the second linkage end part, and each first support rod is provided with a first connecting end part pivoted at the corresponding second pivoting end part and second linkage end part; a kind of electronic device with high-pressure air-conditioning system

The support plate unit comprises two first support plates respectively connected with the first support rods, the connecting rod unit can rotate between an unfolding position and a folding position, when the folding position is achieved, the second linkage end portions are close to each other and the first support plates are flush, when the folding position is achieved, the second linkage end portions are far away from each other to form an avoidance space, and the first support plates are obliquely extended to be close to each other.

2. The multi-link hinge of claim 1, wherein: each first supporting rod is further provided with a second connecting end part opposite to the first connecting end part, the connecting rod unit further comprises two rotating seats respectively pivoted on the first pivoting end parts and two second supporting rods respectively rotatably arranged on the rotating seats and respectively pivoted on the second connecting end parts, and the supporting plate unit further comprises two second supporting plates respectively connected with the second supporting rods and propped against the second connecting end parts.

3. The multi-link hinge of claim 2, wherein: each second supporting rod is provided with a supporting connecting end part connected with the second supporting plate, a supporting pivoting part pivoted on the corresponding second connecting end part and a supporting rotating end part opposite to the supporting connecting end part, each rotating seat forms an arc-shaped rotating groove, and the supporting rotating end part is rotatably accommodated in the corresponding rotating groove.

4. A multi-link hinge as claimed in claim 3, wherein: each second support rod is further provided with a second support rod body connected with the support pivot joint part and the support rotation end part, the second support rod body is provided with an inclined plane, and when the first support plate is in the folding position, the inclined plane is used for supporting the first support plate to extend obliquely.

5. The multi-link hinge of claim 4, wherein: each supporting and rotating end part comprises a connecting block connected with the second supporting rod body and an arc-shaped flange extending from the connecting block in a lateral direction to extend into the corresponding rotating groove.

6. The multi-link hinge of claim 1, wherein: each support link is further provided with a second rod body connected with the first pivoting end part and the second pivoting end part and a second side concave part formed at one side edge of the second rod body, and the second pivoting end parts of the support links are mutually far away and mutually close in the conversion process of the unfolding position and the folding position of the link unit, so that the second linkage end parts of the synchronous links rotate into or out of the second side concave parts.

7. The multi-link hinge of claim 1, wherein: each synchronous connecting rod is also provided with a third rod body connected with the first linkage end part and the second linkage end part and a third side concave part formed at the side edge of the third rod body, and when the connecting rod unit is at the folding position, the third side concave part is used for the corresponding first supporting plate to stretch in.

8. The multi-link hinge of claim 1, wherein: each first supporting rod is further provided with a second connecting end part opposite to the first connecting end part, the connecting rod unit further comprises two rotating connecting rods respectively pivoted at the first pivoting end parts and two second supporting rods respectively pivoted at the rotating connecting rods and the second connecting end parts, and the supporting plate unit further comprises two second supporting plates respectively connected with the second supporting rods and propped against the second connecting end parts.

9. The multi-link hinge of claim 8, wherein: each second supporting rod is provided with a supporting connecting end part connected with the second supporting plate, a supporting pivot part pivoted on the corresponding second connecting end part and a supporting rotating end part opposite to the supporting connecting end part and pivoted on the rotating connecting rod.

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