TWM624661U - Synchronous shaft structure - Google Patents

Abstract

A synchronous shaft structure including an eccentric module and a synchronous module is provided. The eccentric module includes a fixed base having two accommodating spaces and two bracket slidably disposed in the two accommodating spaces respectively. The synchronous module is disposed at one side of the eccentric module and includes a first base, two first shafts, a helical gear, and two first cranks. The two first shafts are rotatably penetrated through the first base. The helical gear is rotatably disposed in the first base and is connected between the two first shafts. The two first cranks are respectively sleeved on the two first shafts and respectively connected to the two brackets. The two brackets are respectively rotated around a first shaft line and a second shaft line as a center relative to the cover, and the two brackets respectively drive the two first shafts to be synchronously rotated in opposite directions by using the two first cranks.

Description

Synchronous shaft structure

The novel creation is related to a rotating shaft structure, and especially a synchronous rotating shaft structure that can rotate synchronously and eccentrically.

In order to achieve the folding function of existing electronic devices such as notebook computers and mobile phones using flexible panels, the hinge structure must be designed according to parameters such as the bending radius and bending trajectory of the flexible panel.

Most of the traditional co-rotating shaft structures use the combination of multiple spur gears and cranks to achieve the effect of co-moving. However, in the current trend of pursuing thinning of electronic devices, the combination of multiple spur gears is required to meet the demand for thinning. As a result, the number of assembled parts will be too large and there will be gaps between the spur gears, resulting in the same The structure of the rotating shaft produces an invalid stroke during the rotation process, and it is impossible to drive the various structures in real time.

The new creation provides a co-rotating shaft structure, which greatly reduces the number of parts to be assembled and can improve the problem of invalid travel caused by the rotation process, thereby achieving real-time synchronization. The effect of step rotation.

The co-rotating shaft structure of the novel creation is suitable for a foldable electronic device, and the foldable electronic device has a first body and a second body. The synchronous rotating shaft structure includes an eccentric module and a synchronous module. The eccentric module includes a fixed seat with two accommodating spaces and two brackets slidably disposed in the two accommodating spaces, respectively connected to the first body and the second body, with a first axis and a second axis respectively It rotates relative to the two receiving spaces for the center of rotation. The synchronous module is arranged on one side of the eccentric module. The synchronous module includes a first base, two first shafts, a helical gear and two first cranks. The two first shafts are rotatably penetrated through the first base. The helical gear is rotatably arranged on the first base and is connected between the two first shafts. The two first cranks are respectively sleeved on the two first shaft rods and are respectively connected with the two brackets. The two brackets drive the two first shafts to rotate synchronously in opposite directions through the two first cranks respectively, and the helical gear is synchronously driven by the two first shafts to rotate at the same time, so as to drive the first body to unfold or close relative to the second body . .

Based on the above, the co-rotating shaft structure in this case is suitable for a foldable electronic device and adopts the technical means of a helical gear and two first shafts to achieve the effect of synchronous rotation, which can effectively reduce the number of parts and the problems of meshing clearance, as well as reduce the The invalid stroke of the rotating shaft structure during the rotation process achieves the effect of instant synchronous rotation.

Further, the two brackets are respectively connected to the first body and the second body and rotate eccentrically relative to the two accommodating spaces with the first axis and the second axis as the rotation centers respectively, and respectively drive the two first shafts through the two first cranks The rods rotate synchronously in opposite directions, and the helical gear rotates in the two first shaft rods to drive the first body Expand or close relative to the second body.

100: Co-rotating shaft structure

110: Eccentric module

111: Fixed seat

112: Bracket

113: Boot Component

120: Sync Module

121: The first base

1211: Clamping part

1212: limit latch

122: The first shaft

1221: Steering Department

1222: Drive Department

1223: Threaded part

123: Helical gear

124: First crank

125: The first torque part

130: Auxiliary module

131: Second base

132: Second shaft

133: Second crank

134: Second torsion piece

135: The third torque part

200: Foldable electronic device

210: The first body

220: Second body

G: Guide groove

AS: accommodation space

BS: Bottom

C1: The first cylinder

C2: Second cylinder

E1, E2: terminal

L1: the first axis

L2: Second axis

IS: inner wall surface

OS: outer wall

PD: horizontal direction

S1: outer side

S2: inner side

SG: Chute

SR: slide rail

T1: The first rotation direction

T2: Second rotation direction

FIG. 1A is a perspective view of an unfolded state of a co-rotating shaft structure combined with a foldable electronic device according to an embodiment of the present invention.

FIG. 1B is a schematic plan view of the co-rotating shaft structure of FIG. 1A .

FIG. 1C is an exploded schematic diagram of some components of the eccentric module, the co-moving module and the auxiliary module of the co-rotating shaft structure of FIG. 1A .

FIG. 1D is an exploded schematic diagram of components of the eccentric module, the co-moving module and the auxiliary module of FIG. 1C .

FIG. 2A is a schematic cross-sectional view of the co-rotating shaft structure of FIG. 1A along the line segment A-A.

2B is a schematic cross-sectional view of the co-rotating shaft structure of FIG. 2A combined with the foldable electronic device being switched to a closed state.

FIG. 3A is a schematic side plan view of the co-rotating shaft structure of FIG. 1A .

FIG. 3B is a schematic cross-sectional view of the co-rotating shaft structure of FIG. 3A combined with the foldable electronic device being switched to a closed state.

FIG. 1A is a perspective view of an unfolded state of a co-rotating shaft structure combined with a foldable electronic device according to an embodiment of the present invention. FIG. 1B is a schematic plan view of the co-rotating shaft structure of FIG. 1A . FIG. 1C is the eccentric module of the synchronous rotating shaft structure of FIG. 1A, the same Partial exploded diagram of the moving module and auxiliary module. FIG. 1D is an exploded schematic diagram of components of the eccentric module, the co-moving module and the auxiliary module of FIG. 1C .

Please refer to FIG. 1A and FIG. 1B , the synchronous rotating shaft structure 100 of the present invention is suitable for the foldable electronic device 200 . The foldable electronic device 200 is, for example, a foldable notebook computer, a tablet computer, a smart phone or a similar electronic product, and the electronic device is suitable for adopting a flexible panel or two rigid panels separated from each other. Furthermore, the synchronous rotating shaft structure 100 of the present invention has the function of synchronous rotation, when unfolding or folding the first body 210 and the second body 220 of the foldable electronic device 200 , the deformation trajectories of the flexible panel are two The sides are symmetrical to each other to avoid excessive pulling or excessive squeezing of the flexible panel during the unfolding or folding process of the electronic device, resulting in wrong deformation trajectories.

Referring to FIGS. 1A to 1D , the co-rotating shaft structure 100 includes an eccentric module 110 and a synchronous module 120 . The synchronous module 120 is disposed on one side of the eccentric module 110 and connected to each other.

The eccentric module 110 includes a fixing seat 111 and two brackets 112 . The fixing base 111 has two accommodating spaces AS. Specifically, the two accommodating spaces AS penetrate through the upper and lower side surfaces of the fixing base 111 and partially overlap in a horizontal direction PD. The two brackets 112 are respectively slidably disposed in the two accommodating spaces AS, and the two brackets 112 are respectively connected to the first body 210 and the second body 220 and are opposite to each other with a first axis L1 and a second axis L2 as the rotation centers respectively Two accommodating spaces AS rotate.

The synchronization module 120 includes a first base 121 , two first shafts 122 , a helical gear 123 and two first cranks 124 . The two first shaft rods 122 are rotatably passed through The first base 121 and the two first shafts 122 are arranged in parallel and spaced apart from each other. The helical gear 123 is rotatably disposed on the first base 121 and is connected between the two first shafts 122 . The two first cranks 124 are respectively sleeved on the two first shafts 122 and are connected to the two brackets 112 respectively. Therefore, each of the first cranks 124 is connected with the corresponding brackets 112 as a whole, that is, the external force acting on each bracket 112 can pass through each bracket 112 . The first cranks 124 are transmitted to the respective first shafts 122 .

In detail, the helical gear 123 is linked with the two first shafts 122 . When one of the first shafts 122 rotates relative to the first base 121 , one of the first shafts 122 drives the other first shaft through the helical gear 123 . The rod 122 enables the two first shafts 122 and the helical gear 123 to operate and rotate synchronously, so as to drive the first body 210 to unfold or close relative to the second body 220 .

Referring to FIGS. 1A to 1D , the eccentric module 110 further includes two guide assemblies 113 , which are respectively disposed on the bottom surfaces BS of the two brackets 112 and each guide assembly 113 has two guide grooves G, wherein each guide assembly 113 is locked on the The bottom surface BS of each bracket 112 is integrally connected with each bracket 112 . Each of the first cranks 124 has a first cylinder C1 and each of the first cylinders C1 is movably disposed in each of the guide grooves G of each of the guide assemblies 113 toward the synchronous module 120 .

Thereby, the two brackets 112 of the eccentric module 110 can drive the two first cranks 124 through the two guiding components 113 and the two first cylinders C1 are suitable for sliding in the guide groove G. Due to the one-piece structure of the guide assembly 113 , the assembly gap between each bracket 112 and each guide assembly 113 can be further reduced. In addition, each guide assembly 113 drives each first cylinder C1 through the guide groove G, so that the two brackets 112 and the two first cranks 124 can be lifted up. linkage stability.

FIG. 2A is a schematic cross-sectional view of the co-rotating shaft structure of FIG. 1A along the line segment A-A. FIG. 2B is a schematic cross-sectional view of the co-rotating shaft structure of FIG. 2A being switched to a closed state. FIG. 3A is a schematic side plan view of the co-rotating shaft structure of FIG. 1A . 3B is a schematic cross-sectional view of the co-rotating shaft structure of FIG. 3A being switched to a closed state.

1A, FIG. 1B, FIG. 3A and FIG. 3B, the two brackets 112 respectively take the first axis L1 and the second axis L2 as the rotation centers and rotate eccentrically relative to the two accommodating spaces AS, the two brackets 112 and the two guide components 113 respectively pass through The two first cranks 124 respectively drive the two first shafts 122 to rotate synchronously in opposite directions, and the helical gear 123 is driven by the two first shafts 122 to rotate synchronously, so as to switch to the unfolded state (see FIG. 3A ) or the closed state closed state (see Figure 3B).

In addition, by locking the two brackets 112 of the eccentric module 110 to the first body 210 and the second body 220 of the foldable electronic device 200 respectively, it can ensure that the first body 210 and the second body 220 are unfolded or closed. During the process, the movement trajectory of driving the flexible panel is symmetrical on both sides.

1D , 2A and 2B, the fixing base 111 has a plurality of slide rails SR, which are respectively arranged in the two accommodating spaces AS opposite to each other, that is, two pairs of inner walls IS of an accommodating space AS are respectively formed with a slide rail SR. Each bracket 112 has two sliding grooves SG, which are concavely formed on two opposite outer wall surfaces OS of each bracket 112 . The two sliding grooves SG of each bracket 112 are respectively slidably accommodated the two sliding rails SR in each accommodating space AS.

In addition, the plurality of slide rails SR in the two accommodating spaces AS respectively define a first axis L1 and a second axis L2 as virtual rotation axes of the two brackets 112 the two brackets 112 slide along the corresponding sliding rails SR respectively, so as to achieve the eccentric rotation of the two brackets 112 relative to the fixed seat 111 , the first body 210 of the foldable electronic device 200 The virtual axis of rotation with the second body 220 during the opening or closing process.

Further, each slide slot SG of each bracket 112 is in contact with the corresponding slide rail SR, and when each slide slot SG and each slide rail SR slide relative to each other, they will rub against each other, so that the fixed seat 111 provides a torsion force acting on the two brackets 112 .

Referring to FIG. 1A , FIG. 2A and FIG. 3A , when the first body 210 is unfolded relative to the second body 220 , the two brackets 112 face a first rotation direction T1 and a second rotation direction T2 opposite to the fixing seat 111 respectively. Rotating, the plurality of sliding grooves SG of the two brackets 112 slide along the plurality of sliding rails SR respectively and enter the two accommodation spaces AS of the fixed seat 111 , the two brackets 112 and the fixed seat 111 are flush with each other, and the two first cranks 124 The two first cylinders C1 are respectively slid to one end E1 of the corresponding two guide grooves G away from the first axis L1 and the second axis L2.

Referring to FIG. 1C , FIG. 2B and FIG. 3B , when the first body 210 is closed relative to the second body 220 , the two brackets 112 rotate in the opposite second rotation direction T2 and first rotation direction T1 respectively relative to the fixing seat 111 , the plurality of sliding grooves SG of the two brackets 112 slide along the plurality of sliding rails SR respectively and protrude out of the second accommodation space AS of the fixed seat 111, the two brackets 112 are orthogonal to the fixed seat 111, and the two first cranks 124 The two first cylinders C1 slide to the other ends E2 of the corresponding two guide grooves G close to the first axis L1 and the second axis L2, respectively.

Further, referring to FIG. 1B and FIG. 1D , the first base 121 has a The clamping portion 1211 and a limit pin 1212 are provided. The helical gear 123 is disposed in the clamping portion 1211 , the limiting pin 1212 is inserted through the center of the clamping portion 1211 and the helical gear 123 , and the helical gear 123 is adapted to take the limiting pin 1212 as the center of rotation and be opposite to the clamping portion 1211 rotate. In other embodiments, the helical gear is mounted on the base by riveting or laser welding, for example.

Referring to FIGS. 1B and 1D , each of the first shafts 122 has a turning portion 1221 , a driving portion 1222 and a threaded portion 1223 . The steering portion 1221 is rotatably penetrated through the first base 121 , the driving portion 1222 is fixedly connected to each of the first cranks 124 , and the threaded portion 1223 is located between the steering portion 1221 and the driving portion 1222 and engages with the helical gear 123 . In detail, the helical gear 123 is engaged with the two threaded portions 1223 of the two first shafts 122 , and when one of the first shafts 122 rotates, it will synchronously drive the other through the meshing relationship between the threaded portion 1223 and the helical gear 123 . The rotation of the shaft 122 , therefore, achieves the purpose of synchronous and reverse rotation of the two first cranks 124 through the meshing relationship between the two threaded portions 1223 and the helical gear 123 .

The synchronous module 120 further includes two first torsion elements 125 , which are respectively sleeved on the two turning portions 1221 of the two first shaft rods 122 and locked to the first base 121 for providing a first torque force to the two first shaft rods. 122, thereby controlling the tightness of the first shaft rod 122 when it rotates.

Referring to FIGS. 1A to 1D , the co-rotating shaft structure 100 further includes an auxiliary module 130 disposed on the other side of the eccentric module 110 relative to the synchronous module 120 , and the auxiliary module 130 includes a second base 131 , a second base Two shaft rods 132 , two second cranks 133 , two second torsion members 134 and a third torsion member 135 .

The two second shaft rods 132 are rotatably penetrated through the second base 131 , and the two second shaft rods 132 are arranged in parallel and spaced apart from each other. The two second cranks 133 are respectively sleeved on the two second shafts 132 and connected to the two brackets 112 respectively. In detail, the two second cylinders C2 of the two second cranks 133 are movably disposed in each guide groove G of each guide assembly 113 toward the auxiliary module 130 .

The two second torsion members 134 are respectively sleeved on the two second shaft rods 132 and locked on an outer side surface S1 of the second base 131 to provide a second torsion force to the two second shaft rods 132 , thereby controlling the first The tightness of the shaft 122 when it rotates. The two third torsion members 135 are respectively sleeved on the two second shaft rods 132 and locked to an inner side surface S2 of the second base 131 to provide a third torsion force to the two first shaft rods 122 , thereby controlling the first shaft rods 122 . The tightness of the shaft 122 when it rotates. The two brackets 112 drive the two second shaft rods 132 to rotate synchronously in opposite directions through the two second cranks 133 respectively.

Further, the auxiliary module 130 and the synchronous module 120 are symmetrically arranged on two sides of the eccentric module 110 , the first torque of the synchronous module 120 acts on one side of the eccentric module 110 and the second torque of the auxiliary module 130 acts on one side of the eccentric module 110 The torsion force and the third torsion force act on the other side of the eccentric module 110, so that the torsion force balance between the left and right sides of the eccentric module 110 can be achieved, so that the two brackets 112 are less likely to be skewed or offset when they are unfolded or closed relative to the fixed seat 111. The smoothness of the sliding of the two brackets 112 is improved and the situation of deformation and damage can be avoided.

To sum up, the synchronous rotating shaft structure created by the present invention is suitable for foldable electronic devices and adopts the technical means of helical gears and two first shafts to achieve the effect of synchronous rotation, which can effectively reduce the number of parts and the problems of meshing clearance, and also can reduce synchrony The invalid stroke of the rotating shaft structure during the rotating process achieves the effect of instant synchronous rotation.

Further, the two brackets are respectively connected to the first body and the second body and rotate eccentrically relative to the two accommodating spaces with the first axis and the second axis as the rotation centers respectively, and respectively drive the two first shafts through the two first cranks The rods rotate synchronously in opposite directions, and the helical gear rotates in the two first shaft rods to drive the first body to unfold or close relative to the second body.

100: Co-rotating shaft structure

110: Eccentric module

120: Sync Module

130: Auxiliary module

200: Foldable electronic device

210: The first body

220: Second body

Claims (10)

A co-rotating shaft structure, suitable for a foldable electronic device, the foldable electronic device has a first body and a second body, including: An eccentric module, including: a fixed seat with two accommodating spaces; and Two brackets are respectively slidably arranged in the two accommodating spaces, are respectively connected to the first body and the second body, and are respectively opposite to the two accommodating spaces with a first axis and a second axis as the center of rotation rotate; and A synchronization module is arranged on one side of the eccentric module, and the synchronization module includes: a first base; two first shafts, rotatably passing through the first base; a helical gear rotatably disposed on the first base and connected between the two first shafts; and Two first cranks, respectively sleeved on the two first shafts and respectively connected to the two brackets, Wherein, the two brackets drive the two first shafts to rotate synchronously in opposite directions through the two first cranks, respectively, and the helical gear is synchronously driven by the two first shafts to rotate at the same time, so as to drive the first body to rotate relative to each other. Expand or close on the second body. The co-rotating shaft structure according to claim 1, wherein the eccentric module further comprises two guide assemblies, which are respectively disposed on the bottom surfaces of the two brackets, each of the guide assemblies has two guide grooves, and each of the first cranks has a a first cylinder, and each of the first cylinders is movably arranged in each of the guide grooves of each of the guide components facing the synchronous module. The co-rotating shaft structure according to claim 1, wherein the fixing base has a plurality of sliding rails, which are respectively arranged in the two accommodating spaces opposite to each other, and each of the brackets has two sliding grooves, and the recesses are formed in the opposite two of the brackets. On the outer wall surface, the two sliding grooves of each of the brackets respectively slidably accommodate the two sliding rails of each of the accommodating spaces. The co-rotating shaft structure according to claim 3, wherein each of the sliding grooves is in contact with each of the corresponding sliding rails, and when each of the sliding grooves and each of the sliding rails slides relative to each other, the fixed seat provides a force acting on the brackets. torque. The co-rotating shaft structure as claimed in claim 1, wherein the first base has a clamping portion and a limiting pin, the helical gear is disposed in the clamping portion, and the limiting pin is inserted through the clamping portion and the helical gear, and the helical gear is adapted to rotate relative to the clamping portion with the limiting pin as the rotation center. The co-rotating shaft structure according to claim 1, wherein each of the first shaft rods has a steering portion, a driving portion and a threaded portion, the steering portion is rotatably penetrated through the first base, and the driving portion Fixed on each of the first cranks, the threaded portion is between the steering portion and the driving portion and meshes with the helical gear. The co-rotating shaft structure according to claim 1, wherein the synchronous module further comprises two first torsion members, which are respectively sleeved on the two first shaft rods and are locked on the first base to provide the first torsion member. Torsion is applied to the two first shafts. The co-rotating shaft structure according to claim 3, wherein when the first body is unfolded relative to the second body, the two brackets face a first rotation direction and a second rotation direction opposite to the fixing seat respectively. Rotating, the sliding grooves slide along the sliding rails respectively and enter the two accommodating spaces of the fixing base, and the two brackets and the fixing base are flush with each other. The co-rotating shaft structure according to claim 8, wherein when the first body is closed relative to the second body, the two brackets are opposite to the second rotation direction and the first rotation direction relative to the fixed seat respectively. The sliding grooves slide along the sliding rails respectively and protrude out of the two accommodating spaces of the fixing seat, and the two brackets are orthogonal to the fixing seat. The synchronous rotating shaft structure as claimed in claim 1, further comprising an auxiliary module, disposed on the other side of the eccentric module relative to the synchronous module, the auxiliary module comprising: a second base; two second shafts, rotatably passing through the second base; two second cranks, respectively sleeved on the two second shaft rods and respectively connected to the two brackets; two second torsion pieces, respectively sleeved on the two second shaft rods and locked on an outer side surface of the second base; and Two third torsion pieces are respectively sleeved on the two second shaft rods and locked on an inner side surface of the second base, Wherein, the two brackets drive the two second shaft rods to rotate synchronously in opposite directions to each other through the two second cranks respectively.

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