Gear homokinetic hinge

Abstract

A gear synchronous hinge includes a base unit and a rotating unit. The base unit includes a base and two abutting plates, the base forms two rotating grooves spaced apart from each other and a linkage groove between the rotating grooves, the linkage groove is communicated with the rotating grooves, and the abutting plates are respectively placed in the rotating grooves. The rotating unit includes two rotating members respectively arranged in the rotating grooves and a bevel gear member arranged in the linkage groove, each rotating member is rotatably accommodated in the corresponding rotating groove and can be interference-fitted with the corresponding abutting plate, and has a bevel gear part engaged with the bevel gear member, when one of the rotating members rotates relative to the base, the bevel gear part drives the bevel gear member to rotate and in turn drives the other rotating member to rotate relative to the base. Thus, sufficient torsion can be provided during rotation, so that the gear synchronous hinge is more stable as a whole, and the shaking situation is greatly reduced.

Description

Technical Field

[0001] This invention relates to a hinge, and more particularly to a gear-driven hinge. Background Technology

[0002] An existing gear-driven hinge is prone to gaps in the rotating track section, resulting in a loose feel during hinge operation, insufficient torque output, and a tendency to wobble during use. It also performs poorly in lifespan tests. Therefore, there is room for improvement. Summary of the Invention

[0003] The purpose of this invention is to provide a gear-driven hinge that can solve at least one of the above-mentioned problems.

[0004] The present invention relates to a gear-driven hinge comprising a base unit, including a base and two abutment plates. The base forms two spaced-apart rotating grooves and a connecting groove located between the rotating grooves. The connecting groove communicates with the rotating grooves, and the abutment plates are respectively placed in the rotating grooves. The invention also includes a rotating unit comprising two rotating members respectively disposed in the rotating grooves and a bevel gear member disposed in the connecting groove. Each rotating member is rotatably accommodated in its corresponding rotating groove and can interfere with the corresponding abutment plate. Each rotating member has a bevel gear portion that meshes with the bevel gear member. When one of the rotating members rotates relative to the base, the bevel gear portion drives the bevel gear member to rotate, thereby driving the other rotating member to rotate relative to the base.

[0005] The gear-driven hinge of the present invention further includes a body portion and a protrusion portion protruding downward from the body portion in each rotating component. The bevel gear portion is formed at one end of the body portion, and the protrusion portion can interfere with the corresponding abutment plate.

[0006] The gear-driven hinge of the present invention further includes a locking block formed at the other end of the main body of each rotating component. The base unit also includes two stops disposed on the base and extending into the rotation groove, each stop blocking the corresponding locking block to limit the rotation angle range of each rotating component.

[0007] The gear-driven hinge of the present invention has a semi-circular flange formed at both ends of the body of each rotating member. The base also has two pairs of semi-circular stop bars located at the two ends of the corresponding rotating groove. The stop bars stop the flanges to restrict the corresponding rotating member from moving upward away from the rotating groove.

[0008] The gear-driven hinge of the present invention further includes a connecting plate portion connecting to the main body portion in each rotating component, the connecting plate portion extending laterally from the main body portion to form the rotating groove.

[0009] The gear-driven hinge of the present application is adapted to be disposed between a first body and a second body, the rotating unit further comprises two engaging members respectively fixed to the link plate portions of the rotating members, the engaging members are plate-shaped and extend along the length direction of the base and are spaced from the base, and are connected to the first body and the second body respectively.

[0010] The gear-driven hinge of the present application, the rotating unit is movable between a first position and a second position, when the rotating unit is in the first position, the rotating members are flush with the base, the first body and the second body are parallel to each other in the collapsed state, when the rotating unit is in the second position, the rotating members are respectively pivoted by an angle relative to the base, and the first body is also pivoted by the angle relative to the second body in the unfolded state.

[0011] The gear-driven hinge of the present application, the bevel gear member has a rotating shaft portion and a gear portion fixedly connected around the rotating shaft portion, the gear portion is engaged with the bevel gear portion of the rotating member respectively, and the rotating unit further comprises a plurality of torsion sheets sleeved on the rotating shaft portion and fixedly accommodated in the link recess.

[0012] The gear-driven hinge of the present application has the following advantages: when one of the rotating members is rotated relative to the base, the bevel gear portion will drive the bevel gear member to rotate and in turn drive the other rotating member to rotate relative to the base, and the rotating members are rotatably accommodated in the corresponding rotating recess and can interfere with the corresponding abutting plate, so that sufficient torsion is provided during rotation to make the hinge as a whole more stable and greatly reduce the shaking situation. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is a perspective view of an embodiment of the gear-driven hinge of the present application disposed between a first body and a second body, wherein a rotating unit of the embodiment is in a first position;

[0014] Figure 2 is a perspective view similar to Figure 1 , wherein the rotating unit is in a second position;

[0015] Figure 3 is a perspective view of the embodiment, wherein the rotating unit is in the first position;

[0016] Figure 4 is a perspective view of the embodiment, wherein the rotating unit is in the second position;

[0017] Figure 5 is a perspective exploded view of the first embodiment;

[0018] Figure 6 is a top view of the embodiment, wherein the rotating unit is in the first position;

[0019] Figure 7 is a sectional view taken along the section line VII-VII of Figure 6 ;

[0020] Figure 8 is a sectional view taken along the section line VIII-VIII of Figure 6 ;

[0021] Figure 9 is a top view of the embodiment, wherein the rotating unit is in the second position;

[0022] Figure 10 is a sectional view taken along the section line X-X of Figure 9 ;

[0023] Figure 11 is a sectional view taken along the section line XI-XI of Figure 9 . DETAILED DESCRIPTION

[0024] The present application will be described in detail below with reference to the drawings and embodiments.

[0025] Referring to Figures 1 to 3 , an embodiment of the gear-driven hinge of the present application is adapted to be disposed between a first body 20 and a second body 30 to jointly form an electronic device 100. The electronic device 100 has three gear-driven hinges 10 arranged in series, and the electronic device 100 can be, for example, a folding device or a handheld device such as a mobile phone, a tablet, a tablet computer, a notebook computer, etc. In this embodiment, a notebook computer is taken as an example for illustration. The first body 20 is the part where the keyboard is disposed, and the second body 30 is the part where the screen is disposed. Each gear-driven hinge 10 comprises a base unit 1 and a rotating unit 2. The number of gear-driven hinges 10 is not limited to three, and can be determined according to the size of the electronic device 100 and the required torque.

[0026] Referring to Figures 3 to 5, the base unit 1 comprises a base 11, two abutting plates 12 arranged on the base 11, and two stop blocks 13 arranged on the base 11. The base 11 forms two rotating grooves 111 spaced apart from each other and a linkage groove 112 located between the rotating grooves 111, and the linkage groove 112 is in communication with the rotating grooves 111. The base 11 also has two pairs of stop bars 14 in the form of substantially semicircular arcs located at both ends of the corresponding rotating grooves 111. The abutting plates 12 are respectively placed in the rotating grooves 111. The stop blocks 13 are respectively located on the side of the rotating grooves 111 away from the linkage groove 112 and extend into the rotating grooves 111, and the upper surfaces of the stop blocks 13 are flush with the upper surface of the base 11. It should be noted that the base 11 of the three gear synchronous hinge 10 is fixedly connected to a joint bar 201, so that the three gear synchronous hinge 10 can be actuated synchronously.

[0027] Referring to Figures 5 to 7 , the rotating unit 2 comprises two rotating members 21 respectively arranged in the rotating grooves 111, a bevel gear member 22 arranged in the linkage groove 112, five torsion pieces 23 which are stacked on each other and are fixedly accommodated in the linkage groove 112, and two joint members 24 respectively fixedly connected to the rotating members 21. Each rotating member 21 is rotatably accommodated in the corresponding rotating groove 111 and can be interference-fitted with the corresponding abutting plate 12, and has a body portion 211 located in the corresponding rotating groove 111, a linkage plate portion 212 connected to the body portion 211 and extending transversely out of the rotating groove 111 from the body portion 211 and fixedly connected to the corresponding joint member 24, a bevel gear portion 213 formed at one end of the body portion 211 and engaged with the bevel gear member 22, a protrusion portion 214 protruding downward from the body portion 211 and capable of being interference-fitted with the corresponding abutting plate 12, a clamping block 215 formed at the other end of the body portion 211, and two flanges 216 in the form of substantially semicircular arcs respectively formed at both ends of the body portion 211. Each stop block 13 can stop the corresponding clamping block 215 to limit the angular range of rotation of each rotating member 21. The stop bars 14 respectively stop the flanges 216 to limit upward displacement of the corresponding rotating member 21 away from the rotating groove 111. The bevel gear member 22 has a rotating shaft portion 221 and a gear portion 222 fixedly connected around the rotating shaft portion 221. The rotating shaft portion 221 is provided for the torsion pieces 23 to be sleeved, and the gear portion 222 is engaged with the bevel gear portions 213 of the rotating members 21 respectively. The joint members 24 are substantially in the form of plates and extend along the length direction of the base 11 and are spaced apart from the base 11, and are respectively connected to the first body 20 and the second body 30.

[0028] Referring to Figure 1 , Figure 3 , Figure 7 and Figure 8The rotating unit 2 can move between a first position and a second position. In the first position, the rotating component 21 is flush with the base 11, and the first body 20 and the second body 30 are parallel to each other in a retracted state. At this time, the protrusions 214 of the rotating component 21 respectively interfere with the corresponding abutment plates 12. Figure 7 As shown. When a user wants to use the electronic device 100, they will push the first body 20, which in turn drives the three gear hinges 10 to operate. The following description focuses on the operation of one gear hinge 10: When one of the rotating parts 21 rotates relative to the base 11, the bevel gear 213 will drive the bevel gear 22 to rotate, which in turn will drive another rotating part 21 to rotate relative to the base 11. Furthermore... Figures 9 to 11 During rotation, the protrusion 214 of the rotating member 21 can respectively interfere with the corresponding abutment plate 12. The stop strip 14 stops the flange 216 of the rotating member 21, and the friction between the rotating shaft 221 of the bevel gear member 22 and the torque plate 23 when rotating. Even though the size of the gear-driven hinge 10 is small, it can still provide sufficient torque and make the gear-driven hinge 10 more stable as a whole, greatly reducing the shaking. The rotating member 21 also has a larger friction area, which increases its service life. When the rotating member 21 continues to rotate relative to the base 11 until the stop block 13 stops the corresponding locking block 215, the rotating unit 2 reaches the second position. Figure 11 As shown. Combined with Figure 2 and Figure 4 When the rotating unit 2 is in the second position, the rotating member 21 pivots at an angle relative to the base 11, and the first body 20 also pivots at the same angle relative to the second body 30 to be in an unfolded state. At this time, the connecting strip 201 is driven by the base 11 of the three gears moving in tandem with the hinge 10 to rotate upward and be exposed between the first body 20 and the second body 30. At this time, the connecting strip 201 can shield the base 11 and provide protection.

[0029] In summary, when one of the rotating members 21 rotates relative to the base 11, the bevel gear portion 213 will drive the bevel gear member 22 to rotate and in turn drive the other rotating member 21 to rotate relative to the base 11. The gear and hinge 10 is rotatably accommodated in the corresponding rotating groove 111 by the rotating member 21 and is interference-fitted with the corresponding abutting plate 12. The flange 216 of the rotating member 21 is blocked by the blocking strip 14. When the rotating shaft portion 221 of the bevel gear member 22 rotates, the friction with the torsion sheet 23 can provide sufficient torsion force even if the gear and hinge 10 is small in size. The gear and hinge 10 is also more stable and less likely to shake. The rotating member 21 has a large friction area and thus has a longer service life. The gear and hinge 10 can thus achieve the purposes of the present application.

[0030] The above description is only an embodiment of the present application and cannot limit the scope of the present application. Any simple equivalent change and modification according to the claims and the description of the present application are still within the scope of the present application.

Claims

1. A gear driven hinge, characterized in that, The gear synchronous hinge comprises: a base unit including a base and two abutting plates, the base forms two rotation grooves spaced apart from each other and a linkage groove between the rotation grooves, the linkage groove is communicated with the rotation grooves, and the abutting plates are respectively placed in the rotation grooves; and a rotation unit including two rotation members respectively arranged in the rotation grooves and a bevel gear member arranged in the linkage groove, each rotation member is rotatably accommodated in the corresponding rotation groove and can be interference-fitted with the corresponding abutting plate, and has a bevel gear portion engaged with the bevel gear member, when one of the rotation members rotates relative to the base, the bevel gear portion drives the bevel gear member to rotate and in turn drives the other rotation member to rotate relative to the base.

2. The gear driven hinge of claim 1, wherein: Each rotation member further has a body portion and a protruding portion protruding downward from the body portion, the bevel gear portion is formed at one end of the body portion, and the protruding portion can be interference-fitted with the corresponding abutting plate.

3. The gear driven hinge of claim 2, wherein: Each rotation member further has a clamping block formed at the other end of the body portion, and the base unit further includes two stop blocks arranged in the base and respectively extending into the rotation grooves, each stop block can stop the corresponding clamping block to limit the angle range of rotation of each rotation member.

4. The gear driven hinge of claim 2, wherein: The body portion of each rotation member has a flange in the shape of a semicircular arc at each end, and the base further has two pairs of stop strips in the shape of semicircular arcs respectively located at the two ends of the corresponding rotation groove, the stop strips stop the flanges respectively to limit the upward displacement of the corresponding rotation member away from the rotation groove.

5. The gear driven hinge of claim 2, wherein: Each rotation member further has a linkage plate portion connected to the body portion, and the linkage plate portion extends transversely out of the rotation groove from the body portion.

6. The gear driven hinge of claim 5, wherein: The gear synchronous hinge is suitable for being arranged between a first body and a second body, and the rotation unit further includes two engagement members respectively fixed to the linkage plate portions of the rotation members, the engagement members are in the shape of plates, extend along the length direction of the base and are spaced apart from the base, and are respectively connected to the first body and the second body.

7. The gear driven hinge of claim 6, wherein: The rotation unit can move between a first position and a second position, when the rotation unit is in the first position, the rotation members are flush with the base, the first body and the second body are parallel to each other in a folded state, and when the rotation unit is in the second position, the rotation members are respectively pivoted by an angle relative to the base, and the first body is also pivoted by the angle relative to the second body in an unfolded state.

8. The gear driven hinge of claim 1, wherein: The bevel gear member has a rotating shaft portion and a gear portion fixedly connected to the rotating shaft portion, the gear portions are respectively engaged with the bevel gear portions of the rotation members, and the rotation unit further includes a plurality of torsion sheets which are sleeved on the rotating shaft portion and fixedly accommodated in the linkage groove.

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