Double-pressure-accumulation hinge

Abstract

the present invention provides a double-pressure-accumulation hinge, comprising a pivotal connection unit having two leaves, two pressure accumulation assemblies that pass through and are pivotally connected to the plurality of leaves, and a shaft unit. The shaft unit comprises a shaft member passing through the plurality of pressure accumulation assemblies, and a reset element group sleeved between the shaft member and the plurality of pressure accumulation assemblies. The plurality of pressure accumulation assemblies can press the reset element group and twist the reset element group, so that the reset element group generates an elastic force

Description

BACKGROUND OF THE INVENTION Field of the Invention

[0001] The present invention relates to a hinge, and more particularly to a double-pressure accumulation hinge.Description of the Prior Art

[0002] Taking the hinge device disclosed in FIG. 15 of Taiwanese Patent No. I654363 as an example, its design primarily employs dual torsion springs to allow the generated restoring force to be summed, thereby making it suitable for heavier door panels.

[0003] However, that patent case requires twisting multiple torsion springs to force them to generate restoring force; furthermore, in order to achieve the requirement of unrestricted direction during installation, its shaft core structure is relatively complex. Therefore, how to make multiple torsion springs generate greater restoring force within a limited space while simultaneously simplifying the overall structure has become a technical problem that the Applicant urgently seeks to overcome.SUMMARY OF THE INVENTION

[0004] The objective of the present invention is to provide a double-pressure accumulation hinge with a simplified structure and unrestricted direction during installation.

[0005] The double-pressure accumulation hinge of the present invention comprises a pivotal connection unit, two sets of accumulator assemblies, and a shaft unit.

[0006] The pivotal connection unit includes two leaves, each of which is provided with a sleeve. These sleeves are arranged along the same direction of the axis and collectively define a channel surrounding the axis.

[0007] The multiple accumulator assemblies are inserted through the aforementioned channel along the direction of the axis. Each pressure accumulation assemblies includes a first cylinder that rotates synchronously with one of the leaves, a second cylinder rotatably sleeved onto the first cylinder, and a pressure accumulation module disposed between the first and second cylinders. The second cylinder of one pressure accumulation assemblies rotates synchronously with the other leaf. The pressure accumulation module of one pressure accumulation assemblies is provided with an accumulation slide sleeve and an accumulation slider. The accumulation slide sleeve is connected to the first cylinder of the assembly and has an inclined surface; the accumulation slider presses against between the accumulation slide sleeve and the second cylinder of the assembly, and has a reverse slope that can match the inclined surface. The pressure accumulation module of the other pressure accumulation assemblies is provided with a ratchet member, which is movably and rotatably sleeved onto the first cylinder of that assembly and can selectively engage with or disengage from it.

[0008] The shaft unit includes a shaft member and a reset element group. The shaft member is movable along the direction of the axis and is inserted between the multiple accumulator assemblies; it is sleeved onto the accumulation slider and the second cylinder of the other pressure accumulation assemblies, and rotates synchronously with both. The reset element group is disposed between the shaft member and the accumulator assemblies, presses against between the accumulation slider and the ratchet member, and is capable of being twisted by the corresponding second cylinder.

[0009] Therefore, when one leaf drives the first cylinder and the accumulation slide sleeve to rotate, or when the other leaf drives the corresponding second cylinder and the shaft member to rotate, the inclined surface of the accumulation slide sleeve and the reverse slope of the accumulation slider will push against each other, causing the reset element group to be compressed by the accumulation slider and twisted by the second cylinder, thereby generating an elastic force that drives the corresponding leaf to rotate.

[0010] The efficacy of the present invention lies in: applying pressure and twisting the reset element group via the multiple accumulator assemblies, causing the reset element group to generate an elastic force sufficient to drive the corresponding leaves to rotate in the reverse direction. Thereby, the goal of achieving unrestricted direction during installation and enhancing the door closing force is accomplished with a compact structure.

[0011] In the aforementioned double-pressure accumulation hinge, the first cylinder of each pressure accumulation assemblies has two spaced apart first engagement slots extending from an end face along the direction of the axis; the second cylinder of each pressure accumulation assemblies has a rotating portion sleeved onto the first cylinder, and a limiting portion configured opposite to the rotating portion. The accumulation slide sleeve has two protrusions formed on the circumferential surface, which respectively correspond to the first engagement slots of the first cylinder. The shaft member rotatably passes through the accumulation slide sleeve.

[0012] On the inner side of the sleeve of the other leaf, two protruding engagement portions are further provided. The rotating portion of the second cylinder of the corresponding pressure accumulation assemblies has two second engagement slots extending from an end face along the axial direction and engaging with the aforementioned engagement portions, and a rectangular hole is formed on the end face. The accumulation slider also has a rectangular hole extending from an end face along the direction of the axis, and the cross-section of the shaft member is rectangular, and it is sleeved onto the aforementioned rectangular holes.

[0013] The aforementioned shaft member includes a first shaft section and an opposite second shaft section. The first shaft section rotatably passes through the ratchet member; the second shaft section has a rectangular cross-section and is sleeved onto the rectangular hole of the second cylinder of the other pressure accumulation assemblies and the rectangular hole of the accumulation slider, causing it to rotate synchronously with the second cylinder and the accumulation slider.

[0014] The aforementioned reset element group includes a compression spring and a torsion spring. Specifically, the compression spring is disposed between the second cylinder of one pressure accumulation assemblies and the accumulation slider; the torsion spring is configured between the ratchet member and the second cylinder of the other pressure accumulation assemblies, and has two opposite end portions that are respectively connected to the ratchet member and the second cylinder.

[0015] In the aforementioned double-pressure accumulation hinge, the shaft unit further includes an actuating member and at least one plug member. The actuating member is installed on the second cylinder of one pressure accumulation assemblies, and has two spaced apart high-level recesses, two low-level recesses axially offset from and spaced apart from the high-level recesses, and two protrusions formed on the circumferential surface. These protrusions engage with the second engagement slots on the second cylinder of that pressure accumulation assemblies. The plug member is connected to the shaft member, rollably abuts the actuating member, and can selectively engage into the high-level recesses or the low-level recesses.

[0016] In the aforementioned double-pressure accumulation hinge, the limiting portion of the second cylinder of one pressure accumulation assemblies has two second engagement slots extending from an end face along the direction of the axis and located on the opposite side of the rotating portion. The actuating member has two spaced apart protrusions formed on its circumferential surface, and these protrusions correspond to and engage with the second engagement slots provided on the second cylinder of that pressure accumulation assemblies.

[0017] In the double-pressure accumulation hinge, the second cylinder of one pressure accumulation assemblies presses against the accumulation slider, and its limiting portion is further provided with a rectangular hole formed on the end face. The accumulation slider also has a rectangular hole extending from an end face to another end face along the direction of the axis, and the cross-section of the shaft member is rectangular and is sleeved onto the aforementioned rectangular holes.

[0018] In the aforementioned double-pressure accumulation hinge, the reset element group may only include a torsion spring. The torsion spring is disposed between the ratchet member and the second cylinder of one pressure accumulation assemblies, and has two opposite end portions which are respectively connected to the ratchet member and the second cylinder.

[0019] In the aforementioned double-pressure accumulation hinge, the pressure accumulation module of one pressure accumulation assemblies further includes a pressure adjusting bolt. The pressure adjusting bolt is screwed into the first cylinder of that pressure accumulation assemblies along the direction of the axis and applies pressure to the accumulation slide sleeve; by adjusting the screwing depth, the second cylinder of that pressure accumulation assemblies can be forced to move along the direction of the axis.

[0020] In the aforementioned double-pressure accumulation hinge, the shaft unit further includes two auxiliary elastic elements. One is disposed between the shaft member and the pressure adjusting bolt, continuously generating an elastic force that pushes the shaft member to move along the direction of the axis; the other is disposed between the ratchet member and the shaft member, also stably providing an elastic force that moves the shaft member along the direction of the axis.

[0021] In the aforementioned double-pressure accumulation hinge, the first cylinder of the other pressure accumulation assemblies has an annular teeth formed on the inner circumferential surface. The ratchet member includes a socket portion sleeved onto the shaft member, a driving portion extending from the socket portion along the axial direction and being operable, and a plurality of pawl teeth formed on the socket portion and selectively detachable from or engageable with the annular teeth.

[0022] In the aforementioned double-pressure accumulation hinge, each pressure accumulation assemblies is further provided with a locking bolt. A C-shaped annular groove is formed on the outer circumferential surface of the ratchet member. Each locking bolt is screwed into the respective leaf along a direction perpendicular to the direction of the axis and inserted into the respective first cylinder. Furthermore, the locking bolt of the other pressure accumulation assemblies has an extension portion, and the extension portion can selectively penetrate or disengage from the annular groove of the ratchet member.BRIEF DESCRIPTION OF THE DRAWINGS

[0023] FIG. 1 is a perspective view illustrating a first embodiment of the double-pressure accumulation hinge of the present invention; FIG. 2 is an exploded perspective view of the aforementioned first embodiment; FIG. 3 is an exploded perspective view of one pressure accumulation assemblies in the aforementioned first embodiment; FIG. 4 is an exploded perspective view of another pressure accumulation assemblies in the aforementioned first embodiment; FIG. 5 is a partial sectional view illustrating the assembly of the multiple aforementioned accumulator assemblies along an axis; FIG. 6 is a sectional view of the aforementioned first embodiment; FIG. 7 is a sectional view of the aforementioned first embodiment taken from another angle; FIG. 8 is a sectional view similar to FIG. 7, but illustrating a compression spring being compressed and a torsion spring being twisted; FIG. 9 is a sectional view similar to FIG. 7, but illustrating a difference in two first cylinders; FIG. 10 is a schematic view illustrating the angular range in which the aforementioned first embodiment generates restoring force; FIG. 11 is a partial exploded perspective view illustrating a variation in two pressure accumulation modules and an actuating member of the aforementioned first embodiment; FIG. 12 is a partial exploded perspective view similar to FIG. 11, but illustrating differences in the angles of a shaft hole and two second engagement slots; FIG. 13 is an exploded perspective view illustrating a second embodiment of the double-pressure accumulation hinge of the present invention; FIG. 14 is a sectional view of the aforementioned second embodiment; and FIG. 15 is a sectional view of the aforementioned second embodiment taken from another angle; LEGEND DESCRIPTION

[0024] 11 door panel; 12 mounting surface; 2 pivotal connection unit; 3 pressure accumulation assemblies; 3a pressure accumulation unit; 3b torsional accumulation unit; 4 shaft unit; 20 channel; 21 first leaf; 211 first sleeve; 212 reinforcing portion; 22 second leaf; 221 second sleeve; 222 engagement portion; 23 spacer ring; 231 spacer ring protrusion; 24 retaining ring; 31 first cylinder; 311 first engagement slot; 312 through-hole; 313 annular teeth; 32 second cylinder; 321 rotating portion; 322 limiting portion; 323 second engagement slot; 324 rectangular opening; 33 locking pin; 34 locking bolt; 341 extension portion; 35 pressure accumulation module; 351 accumulation slide sleeve; 3511 inclined surface; 3512 protrusion; 352 accumulation slider; 3521 reverse slope; 3522 rectangular hole; 353 pressure adjusting bolt; 354 ratchet member; 3541 socket portion; 3542 driving portion; 3543 pawl tooth; 3544 annular groove; 36 washer; 41 shaft member; 411 first shaft section; 412 second shaft section; 413 shaft hole; 42 actuating member; 421 protrusion; 422 high-level recess; 423 low-level recess; 424 rib projection; 43 plug member; 44 pressing member; 441 rectangular hole; 45 annular gasket; 451 protrusion; 46 reset element group; 461 compression spring; 462 torsion spring; 463 end portion; 464 torsion spring; 465 end portion; 47 auxiliary elastic element; X axis;DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0025] Referring to FIG. 1 and FIG. 2, a first embodiment of the double-pressure accumulation hinge of the present invention is adapted to connect a door panel 11 and a mounting surface 12. The aforementioned mounting surface 12 can be a door frame, a wall surface, or a ground surface. The aforementioned double-pressure accumulation hinge includes a pivotal connection unit 2, two accumulator assemblies 3, and a shaft unit 4.

[0026] The aforementioned pivotal connection unit 2 includes a mutually pivotally connected first leaf 21 and a second leaf 22 which are rotatable by an external force, two spacer rings 23, and two retaining rings 24.

[0027] The aforementioned first leaf 21 has two first sleeves 211 surrounding an axis X and spaced apart along the direction of the aforementioned axis X, and a reinforcing portion 212 connecting the aforementioned multiple first sleeves 211.

[0028] The aforementioned second leaf 22 has a second sleeve 221 surrounding the aforementioned axis X and inserted through the spaces between the aforementioned multiple first sleeves 211. The aforementioned second sleeve 221 and the aforementioned multiple first sleeves 211 form a channel 20 extending along the direction of the aforementioned axis X. The aforementioned second sleeve 221 further has an engagement portion 222 protruding from an inner surface thereof.

[0029] The aforementioned multiple spacer rings 23 are sleeved between the aforementioned multiple first sleeves 211 and the second sleeve 221. Referring to FIG. 2, the aforementioned multiple spacer rings 23 further include a spacer ring protrusion 231. The aforementioned spacer ring protrusion 231 is disposed inside the first sleeve 211 or inside the second sleeve 221.

[0030] The aforementioned multiple retaining rings 24 are fitted into the inner surfaces of the multiple first sleeves 211.

[0031] Referring to FIGs. 3 to 6, the aforementioned multiple accumulator assemblies 3 are inserted through the aforementioned channel 20 along the direction of the axis X. Each pressure accumulation assemblies 3 includes a first cylinder 31 that rotates together with the multiple first sleeves 211 of the first leaf 21, a second cylinder 32 rotatably sleeved on the first cylinder 31, two locking pins 33, a locking bolt 34, and a pressure accumulation module 35 disposed between the first cylinder 31 and the second cylinder 32.

[0032] The aforementioned first cylinder 31 has two spaced apart first engagement slots 311 extending from an end face along the direction of the aforementioned axis X, and a through-hole 312 extending from an outer surface in a direction perpendicular to the axis X.

[0033] The aforementioned second cylinder 32 has a rotating portion 321 rotatably sleeved on the first cylinder 31, and a limiting portion 322 opposite to the rotating portion 321. The aforementioned limiting portion 322 has two spaced apart second engagement slots 323 extending from an end face along the direction of the axis X.

[0034] The aforementioned multiple locking pins 33 pass through corresponding first sleeves 211 in a direction perpendicular to the axis X and are inserted into the first cylinder 31.

[0035] The aforementioned locking bolt 34 is screwed into the respective first sleeves 211 in a direction perpendicular to the axis X, and is inserted through the through-hole 312 of the aforementioned first cylinder 31.

[0036] To facilitate a better understanding of the differences between the aforementioned multiple accumulator assemblies 3, one of the accumulator assemblies 3 is further distinguished as a pressure accumulation unit 3a, and the other pressure accumulation assemblies 3 is distinguished as a torsional accumulation unit 3b.

[0037] The pressure accumulation module 35 of the aforementioned pressure accumulation unit 3a has an accumulation slide sleeve 351, an accumulation slider 352, and a pressure adjusting bolt 353.

[0038] The aforementioned accumulation slide sleeve 351 is installed inside the first cylinder 31 of the pressure accumulation unit 3a, and has an inclined surface 3511 facing the second cylinder 32 of the aforementioned pressure accumulation unit 3a, and two spaced apart protrusions 3512 formed on the circumferential surface. The aforementioned multiple protrusions 3512 engage with the multiple first engagement slots 311 of the first cylinder 31 of the pressure accumulation unit 3a, and are able to rotate together with the first cylinder 31 of the pressure accumulation unit 3a.

[0039] The aforementioned accumulation slider 352 is installed between the first cylinder 31 and the second cylinder 32 of the pressure accumulation unit 3a, and has a reverse slope 3521 facing the first cylinder 31 of the pressure accumulation unit 3a and being capable of matching the aforementioned inclined surface 3511, and a rectangular hole 3522 extending from one end face to the other end face along the direction of the axis X.

[0040] The aforementioned pressure adjusting bolt 353 is screwed into the first cylinder 31 of the pressure accumulation unit 3a along the direction of the axis X and tightly presses against the accumulation slide sleeve 351. By changing the depth of screwing, the aforementioned pressure adjusting bolt 353 pushes the accumulation slide sleeve 351 and the accumulation slider 352, thereby forcing the second cylinder 32 of the pressure accumulation unit 3a to move along the direction of the axis X.

[0041] The first cylinder 31 of the aforementioned torsional accumulation unit 3b further has an annular teeth 313 formed on the inner circumferential surface. The limiting portion 322 of the second cylinder 32 of the aforementioned torsional accumulation unit 3b further has a rectangular opening 324 formed on the aforementioned end face. Furthermore, the second engagement slot 323 of the second cylinder 32 of the aforementioned torsional accumulation unit 3b engages with the engagement portion 222 of the aforementioned second sleeve 221, enabling the second cylinder 32 of the torsional accumulation unit 3b to rotate together with the second leaf 22.

[0042] The pressure accumulation module 35 of the torsional accumulation unit 3b has a ratchet member 354. The aforementioned ratchet member 354 is movable along the direction of the axis X and rotatably sleeved inside the first cylinder 31 of the torsional accumulation unit 3b. The aforementioned ratchet member 354 has a socket portion 3541, a driving portion 3542 extending from the socket portion 3541 along the direction of the axis X and being operable, a plurality of pawl teeth 3543 formed on the socket portion 3541 and detachably engaged with the annular teeth 313, and a C-shaped annular groove 3544 formed between the socket portion 3541 and the driving portion 3542.

[0043] The locking bolt 34 of the aforementioned torsional accumulation unit 3b has an extension portion 341 extending in a direction perpendicular to the axis X. The aforementioned extension portion 341 is detachably inserted through the annular groove 3544 of the ratchet member 354.

[0044] The aforementioned shaft unit 4 includes a shaft member 41, an actuating member 42, two plug members 43, a pressing member 44, a plurality of annular gaskets 45, a reset element group 46, and two auxiliary elastic elements 47.

[0045] The aforementioned shaft member 41 is movably inserted through the spaces between the multiple accumulator assemblies 3 along the direction of the axis X. The aforementioned shaft member 41 has a first shaft section 411 and a second shaft section 412 opposite to the first shaft section 411. The aforementioned first shaft section 411 is rotatably inserted through the aforementioned ratchet member 354. The cross-section of the aforementioned second shaft section 412 is rectangular, and it is sleeved into the rectangular opening 324 of the second cylinder 32 of the torsional accumulation unit 3b and the rectangular hole 3522 of the aforementioned accumulation slider 352, and is thereby able to rotate together with the second cylinder 32 of the torsional accumulation unit 3b and the accumulation slider 352. The aforementioned second shaft section 412 further has a shaft hole 413 extending from one side surface to the other side surface in a direction perpendicular to the axis X.

[0046] The aforementioned actuating member 42 is installed inside the second cylinder 32 of the pressure accumulation unit 3a, and has two protrusions 421, two high-level recesses 422, and two low-level recesses 423. The aforementioned multiple protrusions 421 are formed on the outer circumferential surface of the actuating member 42 and are spaced apart from each other. The aforementioned multiple protrusions 421 correspond to the multiple second engagement slots 323 of the second cylinder 32 of the pressure accumulation unit 3a, and are thereby able to rotate together with the second cylinder 32 of the pressure accumulation unit 3a. The aforementioned multiple high-level recesses 422 are formed on an end face facing the accumulation slider 352 and are spaced apart from each other. The aforementioned multiple low-level recesses 423 are formed on the aforementioned end face and are spaced apart from the multiple high-level recesses 422, forming a level difference with the multiple high-level recesses 422 along the direction of the axis X.

[0047] The aforementioned multiple plug members 43 are inserted through the shaft hole 413 of the shaft member 41 in a direction perpendicular to the axis X. The aforementioned multiple plug members 43 rollably abut against the actuating member 42, and are capable of engaging into the aforementioned multiple high-level recesses 422 or engaging into the aforementioned multiple low-level recesses 423.

[0048] The aforementioned pressing member 44 is inserted through the second cylinder 32 of the pressure accumulation unit 3a, and is spaced apart from the accumulation slider 352. The aforementioned pressing member 44 has a rectangular hole 441 sleeved on the second shaft section 412, enabling the aforementioned pressing member 44 to rotate together with the shaft member 41.

[0049] The aforementioned multiple annular gaskets 45 are installed on the second cylinder 32 of the pressure accumulation unit 3a, and are located between the multiple second cylinders 32. Each annular gasket 45 has two spaced apart protrusions 451 formed on the outer circumferential surface. The aforementioned multiple protrusions 451 correspond to the multiple second engagement slots 323 of the second cylinder 32 of the pressure accumulation unit 3a, enabling the multiple annular gaskets 45 to rotate together with the second cylinder 32 of the pressure accumulation unit 3a.

[0050] The aforementioned reset element group 46 has a compression spring 461 and a torsion spring 462. The aforementioned compression spring 461 is inserted through the second cylinder 32 of the pressure accumulation unit 3a, and is pressing between the pressing member 44 and the accumulation slider 352. The aforementioned torsion spring 462 is disposed between the ratchet member 354 and the limiting portion 322 of the second cylinder 32 of the torsional accumulation unit 3b, and has two opposite end portions 463. The aforementioned multiple end portions 463 are connected to the ratchet member 354 and the second cylinder 32 of the torsional accumulation unit 3b.

[0051] One of the auxiliary elastic elements 47 is pressing between the first shaft section 411 of the shaft member 41 and the ratchet member 354. The other auxiliary elastic element 47 is pressing between the second shaft section 412 and the pressure adjusting bolt 353.

[0052] Referring to FIGs. 2, 6 to 8, during assembly, the pre-assembled pressure accumulation unit 3a and shaft unit 4 are merely inserted through the channel 20 from the bottom of the pivotal connection unit 2 along the direction of the axis X, and the pre-assembled torsional accumulation unit 3b is inserted through the channel 20 from the top of the pivotal connection unit 2, until the first cylinders 31 of the multiple accumulator assemblies 3 are fitted into the multiple retaining rings 24 and abut against the multiple first sleeves 211, thus being preliminarily positioned in the aforementioned channel 20. Then, each locking bolt 34 is screwed into the multiple first sleeves 211 and inserted through the through-hole 312 of the multiple first cylinders 31. The multiple accumulator assemblies 3 and the pivotal connection unit 2 are thereby connected by the multiple locking bolts 34. Finally, the multiple locking pins 33 are inserted between the multiple first sleeves 211 and the multiple first cylinders 31. The multiple accumulator assemblies 3 and the pivotal connection unit 2 are thereby further limited by the multiple locking pins 33.

[0053] When an external force drives the door panel 11 to rotate the second leaf 22 relative to the mounting surface 12 in a positive direction about the axis X, from a 0-degree closed state to an 85-to-95-degree opened state, either to the left or to the right, the aforementioned second leaf 22 drives the shaft member 41 to rotate together via the second cylinder 32 of the torsional accumulation unit 3b. Since the rotating portion 321 of the second cylinder 32 of the torsional accumulation unit 3b is in an idling state relative to the first cylinder 31 of the torsional accumulation unit 3b, in a situation where the first leaf 21 is not rotated, the aforementioned shaft member 41 drives the accumulation slider 352 to rotate relative to the accumulation slide sleeve 351, drives the aforementioned multiple plug members 43 to rotate on the actuating member 42, and simultaneously drives the second cylinder 32 of the torsional accumulation unit 3b and the pressing member 44 to rotate therewith during the rotation process.

[0054] During the rotation of the accumulation slider 352, the multiple plug members 43, the pressing member 44, and the second cylinder 32 of the aforementioned pressure accumulation unit 3a, the aforementioned accumulation slider 352 pushes the inclined surface 3511 of the accumulation slide sleeve 351 with the reverse slope 3521, thereby pushing the second cylinder 32 of the pressure accumulation unit 3a to move along the direction of the axis X toward the compression spring 461. Furthermore, the aforementioned multiple plug members 43 frictionally contact the actuating member 42, roll from the multiple low-level recesses 423 toward the multiple high-level recesses 422, and push the aforementioned pressing member 44 to move toward the compression spring 461. Thereby, the spacing between the pressing member 44 and the accumulation slider 352 is reduced, and the aforementioned compression spring 461 is compressed to generate a restoring force. Concurrently, the second cylinder 32 of the aforementioned torsional accumulation unit 3b twists the aforementioned torsion spring 462 to generate a restoring force, which is further enhanced by combining the pressure from vertical compression and the side-pushing torsion.

[0055] It is worth noting that during the rolling process of the aforementioned multiple plug members 43, the frictional force between the multiple plug members 43 and the actuating member 42 can slow down the opening speed of the door panel 11. Furthermore, after the multiple plug members 43 roll and engage into the aforementioned multiple high-level recesses 422, the door panel 11 can be temporarily stopped at a preset angular position.

[0056] When closing the door panel 11, it is only necessary to lightly pull or push the aforementioned door panel 11, causing the multiple plug members 43 on the shaft member 41 to disengage from the multiple high-level recesses 422 and roll toward the multiple low-level recesses 423. The restoring force of the compression spring 461 and the torsion spring 462 can thereby rotate the second cylinder 32 of the torsional accumulation unit 3b and the accumulation slider 352 in a reverse direction along the axis X. During the rotation of the accumulation slider 352, the spacing between it and the pressing member 44 gradually increases. This causes the shaft member 41, the second cylinder 32 of the torsional accumulation unit 3b, and the second leaf 22 to rotate together in the reverse direction. Furthermore, the aforementioned multiple plug members 43 frictionally contact the actuating member 42, rolling from the multiple high-level recesses 422 toward the multiple low-level recesses 423, thereby slowing down the closing speed of the door panel 11.

[0057] When the aforementioned accumulation slider 352 rotates until the reverse slope 3521 matches the inclined surface 3511 of the accumulation slide sleeve 351, and the aforementioned multiple plug members 43 rotate to engage into the multiple low-level recesses 423 of the actuating member 42, the compression spring 461 and the torsion spring 462 can be fully released, and the door panel 11 is stabilized in the 0 degree closed state.

[0058] It is worth noting that the space between the multiple high-level recesses 422 and the multiple low-level recesses 423 of the aforementioned actuating member 42 is a curved surface. By designing different curvatures, the magnitude of the frictional resistance can be controlled, thereby changing the rotation speed of the door panel 11. Furthermore, by merely changing the angle of the aforementioned multiple high-level recesses 422, the door panel 11 can be temporarily stopped at a preset angle.

[0059] It should be noted that the present invention is not limited to achieving the effects of buffering and opening / closing the door by rotating the second leaf 22. In other variations of this embodiment, when an external force drives the first leaf 21 to rotate about the axis X, the aforementioned multiple first sleeves 211 can drive the multiple first cylinders 31 to rotate. Furthermore, in a situation where the multiple first cylinders 31 idle relative to the multiple second cylinders 32, and the second leaf 22, the multiple second cylinders 32, and the shaft member 41 are fixed, the multiple first cylinders 31 drive the accumulation slide sleeve 351 to rotate relative to the accumulation slider 352, and drive the ratchet member 354 to rotate relative to the shaft member 41. Thereby, the aforementioned accumulation slider 352 will likewise push the inclined surface 3511 of the accumulation slide sleeve 351 with the reverse slope 3521, thereby compressing the aforementioned compression spring 461 to generate a restoring force. The ratchet member 354 will also twist the aforementioned torsion spring 462 to generate a restoring force, which is further enhanced by combining the pressure from vertical compression and the side-pushing torsion. This ensures that the present invention has no directional limitation during installation.

[0060] Additionally, by rotating the pressure adjusting bolt 353 using a hand tool (not shown in the figures), the screwing depth of the pressure adjusting bolt 353 with the first cylinder 31 of the pressure accumulation unit 3a can be adjusted. This pushes the second cylinder 32 and the accumulation slider 352 of the pressure accumulation unit 3a to move relative to each other along the direction of the axis X, contracts or expands the spacing with the aforementioned pressing member 44, and changes the compression amount of the compression spring 461. For example, by screwing the pressure adjusting bolt 353 in by a depth of about $1\text{ mm}$, the restoring force can be increased by about 18.5kg; by screwing the pressure adjusting bolt 353 in by a depth of about 4mm, the restoring force can be increased by about 75kg.

[0061] Similarly, by first pressing down the ratchet member 354 with a hand tool, the multiple pawl teeth 3543 of the ratchet member 354 are disengaged from the annular teeth 313 of the first cylinder 31 of the torsional accumulation unit 3b. Then, by rotating the ratchet member 354, the aforementioned torsion spring 462 can be twisted, thereby changing the elastic force of the torsion spring 462. When the hand tool releases the ratchet member 354, the aforementioned ratchet member 354 is pushed again by the torsion spring 462, causing the multiple pawl teeth 3543 to engage with the annular teeth 313. For example, the aforementioned ratchet member 354 can rotate 360 degrees, and for every 36 degrees of rotation, the restoring force can be increased by about 18.5kg.

[0062] It is worth noting that although the aforementioned ratchet member 354 is able to rotate 360 degrees, rotation of the aforementioned ratchet member 354 is limited to about 324 degrees due to the extension portion 341 of the locking bolt 34 of the torsional accumulation unit 3b. The aforementioned ratchet member 354 can only continue to be rotated after the locking bolt 34 of the aforementioned torsional accumulation unit 3b is unscrewed until the extension portion 341 disengages from the annular groove 3544.

[0063] According to the foregoing, if the compression spring 461 and the torsion spring 462 are set to generate a restoring force of about 150kg each, the aforementioned multiple accumulator assemblies 3 can generate a restoring force of about 150kg + 150kg = 300kg after the external force is released, and are suitable for heavier doors.

[0064] It should be noted that the aforementioned multiple first cylinders 31 are not limited to abutting against the aforementioned multiple first sleeves 211. In other variations of this embodiment, as shown in FIG. 9, two washers 36 sleeved on the multiple first cylinders 31 can also be used to abut against the multiple first sleeves 211.

[0065] Referring to FIG. 10, 11, and 12, besides allowing the restoring force to have a multiplication effect, this embodiment can also set the angular range in which the reset element group 46 generates the restoring force through the angle setting of the shaft hole 413 of the aforementioned shaft member 41 and the second engagement slot 323 of the second cylinder 32 of the pressure accumulation unit 3a, or through the angle variation of the engagement position of the multiple end portions 463 of the torsion spring 462 with the ratchet member 354 and the second cylinder 32 of the torsional accumulation unit 3b. For example, when the angle of the shaft hole 413 of the aforementioned shaft member 41 and the second engagement slot 323 of the second cylinder 32 of the pressure accumulation unit 3a is changed from a first position shown in FIG. 11 to a second position shown in FIG. 12, which is separated from the first position by $45$ degrees, the multiple plug members 43 inserted through the shaft hole 413 and the actuating member 42 installed on the second cylinder 32 of the pressure accumulation unit 3a will rotate cooperatively by about 45 degrees, causing the angular range in which the aforementioned compression spring 461 can generate a restoring force to become 45 degrees to 135 degrees. Based on the foregoing, during the same process of pushing the aforementioned door panel 11 to open from 0 degrees to 90 degrees, the angular range in which the aforementioned torsion spring 462 generates a restoring force can be set to be between 0 degrees and 90 degrees, and the angular range in which the aforementioned compression spring 461 generates a restoring force can be set to be between 45 degrees and 135 degrees (as indicated by the solid line arrow), or between -45 degrees and 45 degrees (as indicated by the dashed line arrow), and so forth.

[0066] The angle between the shaft hole 413 of the aforementioned shaft member 41 and the second engagement slot 323 of the second cylinder 32 of the pressure accumulation unit 3a can be separated from the aforementioned first position by about 45 degrees, as shown in FIG. 12, or can also be separated by about 90 degrees, or about 135 degrees. Naturally, other angular ranges can be varied according to practical requirements, and the present invention is not limited thereto. Since persons having ordinary skill in the art can infer the expanded details based on the above description, no further explanation is provided.

[0067] Additionally, as shown in FIG. 11, the aforementioned actuating member 42 further has two rib projections 424 formed on the multiple high-level recesses 422. Thereby, different door opening and closing effects can be achieved through the combination of the variation in the angular range of the aforementioned restoring force and the design of the multiple rib projections 424. For example:

[0068] Less hold on opening: Referring to FIG. 9, 10, and 11, when the door panel 11 opens to near 90 degrees, the multiple plug members 43 rolling on the actuating member 42 from the multiple low-level recesses 423 toward the multiple high-level recesses 422 are obstructed by the multiple rib projections 424 and thus cannot be positioned in the multiple high-level recesses 422. Thereby, as soon as the external force is released, the aforementioned door panel 11 will immediately close due to the action of the aforementioned restoring force.

[0069] Backcheck power: Referring to FIG. 12, and referencing FIG. 3 and 4, the angular range in which the aforementioned compression spring 461 generates a restoring force is between 45 degrees and 135 degrees, and the angular range in which the aforementioned torsion spring 462 generates a restoring force is between 0 degrees and 90 degrees. Thereby, in the initial stage of opening the door, the user only encounters a smaller resistance, as only the compression spring 461 generates a restoring force. However, when the door panel 11 opens to between 45 degrees and 90 degrees, both the aforementioned compression spring 461 and the torsion spring 462 generate a restoring force.

[0070] Latchpower: Referencing FIG. 11 and 12, the angular range in which the compression spring 461 generates a restoring force is set to be between -45 degrees and 45 degrees, and the angular range in which the torsion spring 462 generates a restoring force is set to be between 0 degrees and 90 degrees. Thereby, when the user is in the initial stage of opening the door or during automatic closing from 45 degrees to 0 degrees, both the aforementioned compression spring 461 and the torsion spring 462 generate a restoring force. The user must therefore apply a greater external force to push the door panel 11, and a strong closing force is still present when the aforementioned door panel 11 closes to near 0 degrees.

[0071] Referring to FIG. 13, 14, and 15, a second embodiment of the double-pressure accumulation hinge of the present invention likewise includes a pivotal connection unit 2, multiple accumulator assemblies 3, and a shaft unit 4. The differences lie in that:

[0072] When the second cylinder 32 of the aforementioned pressure accumulation unit 3a is pressed against the accumulation slider 352. The limiting portion 322 of the second cylinder 32 of the pressure accumulation unit 3a further has a rectangular opening 324. The second cylinder 32 of the aforementioned torsional accumulation unit 3b omits the aforementioned rectangular opening 324 shown in FIG. 4.

[0073] The aforementioned reset element group 46 has a torsion spring 464. The aforementioned torsion spring 464 has two opposite end portions 465. The aforementioned multiple end portions 465 are connected between the ratchet member 354 and the second cylinder 32 of the pressure accumulation unit 3a.

[0074] Thereby, when the aforementioned shaft member 41 is driven to rotate by the second leaf 22, or when the aforementioned accumulation slide sleeve 351 is driven to rotate by the first leaf 21, the accumulation slider 352 and the accumulation slide sleeve 351 can likewise mutually push each other, thereby pushing the second cylinder 32 of the pressure accumulation unit 3a to compress the aforementioned compression spring 461. Concurrently, the aforementioned torsion spring 464 can be twisted during the rotation of the second cylinder 32 of the pressure accumulation unit 3a or the ratchet member 354. Thereby, the restoring force can likewise be enhanced by combining the pressure from vertical compression and the side-pushing torsion.

[0075] Based on the above description, the advantages of the aforementioned embodiments can be summarized as follows: 1.The present invention can, through the special design of the multiple accumulator assemblies 3, simultaneously compress and twist the reset element group 46 when the first leaf 21 or the second leaf 22 is pushed, thereby enhancing the restoring force or generating an additive restoring force. This not only increases the closing force but also results in a compact structure and installation without directional restrictions. 2.Most importantly, the present invention can set the angular range in which the aforementioned reset element group 46 generates a restoring force, through the design of different angles for the shaft hole 413 and the multiple second engagement slots 323, or through the angle variation of the engagement position of the multiple end portions 463 of the torsion spring 462 with the ratchet member 354 and the second cylinder 32 of the torsional accumulation unit 3b. This enables the present invention to achieve the door opening and closing effects of Less hold on opening, backcheck power, and Latch power. 3.The present invention is further able to adjust the screwing depth of the aforementioned pressure adjusting bolt 353 with the first cylinder 31 of the pressure accumulation unit 3a, thereby changing the compression amount of the compression spring 461. Alternatively, the torque of the aforementioned torsion spring 462 or torsion spring 464 can be changed by twisting the aforementioned torsion spring 462 or torsion spring 464 via the ratchet member 354. This allows for adjusting the magnitude of the restoring force of the reset element group 46, achieving the effect of adjustable door closing speed. 4.Additionally, the present invention can achieve easy installation of the multiple accumulator assemblies 3 and the pivotal connection unit 2 through a modular design, and allows for the replacement of different accumulator assemblies 3 to obtain different usage effects and satisfy various application requirements. 5.Combining all the advantages mentioned above, the present invention is suitable for application on movable door panels, such as main doors, windows, container doors, refrigerator doors, flip-up furniture or bookshelves, thereby improving the practicality of the attached product.

[0076] However, the above descriptions are merely embodiments of the present invention and should not be used to limit the scope of the present invention. All simple equivalent variations and modifications made according to the scope of the claims and the content of the specification of the present invention shall still fall within the scope covered by the patent of the present invention.

Claims

1. A double-pressure accumulation hinge, <b>characterized by: a pivotal connection unit, including two leaves, each leaf having a sleeve, wherein the multiple sleeves are arranged along an axis and collectively define a channel surrounding the aforementioned axis; two accumulator assemblies, inserted through the aforementioned channel along the direction of the axis, wherein each aforementioned pressure accumulation assemblies includes a first cylinder that rotates together with one of the aforementioned leaves, a second cylinder rotatably sleeved on the aforementioned first cylinder, and a pressure accumulation module disposed between the aforementioned first cylinder and the aforementioned second cylinder, wherein one second cylinder of the multiple aforementioned accumulator assemblies rotates together with the other aforementioned leaf; and wherein the pressure accumulation module of one of the aforementioned accumulator assemblies has a ratchet member, the aforementioned ratchet member being movably and rotatably sleeved onto the first cylinder of the aforementioned one pressure accumulation assemblies and detachably engaged with the first cylinder of the aforementioned one pressure accumulation assemblies; and wherein the pressure accumulation module of the other aforementioned pressure accumulation assemblies has an accumulation slide sleeve and an accumulation slider, the aforementioned accumulation slide sleeve being connected to the first cylinder of the aforementioned other pressure accumulation assemblies and having an inclined surface, and the aforementioned accumulation slider presses against the aforementioned accumulation slide sleeve and the second cylinder of the aforementioned other pressure accumulation assemblies and has a reverse slope capable of matching the aforementioned inclined surface; and a shaft unit, including a shaft member movably inserted through the multiple aforementioned accumulator assemblies along the aforementioned direction of the axis, and a reset element group sleeved between the aforementioned shaft member and the aforementioned pressure accumulation assemblies, wherein the aforementioned shaft member is sleeved onto the aforementioned accumulation slider and the second cylinder of the aforementioned other pressure accumulation assemblies and rotates together with the aforementioned accumulation slider and the second cylinder of the aforementioned other pressure accumulation assemblies, and the aforementioned reset element group presses against between the aforementioned accumulation slider and the aforementioned ratchet member, and is capable of being twisted by the corresponding second cylinder; Thereby, when the aforementioned one leaf drives the multiple aforementioned first cylinders and the aforementioned accumulation slide sleeve to rotate, or when the aforementioned other leaf drives the corresponding second cylinder and the aforementioned shaft member to rotate, the inclined surface of the aforementioned accumulation slide sleeve and the reverse slope of the aforementioned accumulation slider will push against each other, and the aforementioned reset element group will be compressed by the aforementioned accumulation slider and twisted by the corresponding second cylinder, thereby generating an elastic force that drives the corresponding leaf to rotate2. The double-pressure accumulation hinge according to Claim 1, wherein each pressure accumulation assembly has a first cylinder provided with two first engagement slots spaced apart from each other and extending from one end surface along the axis; each pressure accumulation assembly further has a second cylinder including a rotating portion sleeved onto the first cylinder and a limiting portion disposed opposite to the rotating portion; the accumulation slide sleeve has two protrusions spaced apart from each other and formed on a circumferential surface thereof; the plurality of protrusions of the accumulation slide sleeve are engaged with the plurality of first engagement slots of the first cylinder; and the shaft member rotatably passes through the accumulation slide sleeve.

3. The double-pressure accumulation hinge according to Claim 2, wherein a sleeve of the other leaf further has two engagement portions protruding from an inner surface thereof; the rotating portion of the second cylinder of the other pressure accumulation assembly has two second engagement slots extending from an end surface opposite to the rotating portion along the axis and engaged with the plurality of engagement portions, and a rectangular opening formed in the end surface; the accumulation slider has a rectangular opening extending from one end surface to the other end surface along the axis; and the shaft member has a rectangular cross section and is fitted into the plurality of rectangular openings.

4. The double-pressure accumulation hinge according to Claim 3, wherein the shaft member has a first shaft section and a second shaft section opposite to the first shaft section; the first shaft section is rotatably inserted through the ratchet member; the second shaft section has a rectangular cross section and is sleeved into the rectangular opening of the second cylinder of the other pressure accumulation assembly and the rectangular opening of the accumulation slider, such that the second shaft section rotates together with the second cylinder of the other pressure accumulation assembly and the accumulation slider.

5. The double-pressure accumulation hinge according to Claim 3, wherein the reset element group includes a compression spring and a torsion spring; the compression spring is abutted between the second cylinder of one of the pressure accumulation assemblies and the accumulation slider; the torsion spring is disposed between the ratchet member and the second cylinder of the other pressure accumulation assembly and has two opposite ends, the ends being connected to the ratchet member and the second cylinder of the other pressure accumulation assembly, respectively.

6. The double-pressure accumulation hinge according to Claim 5, wherein the shaft unit further includes an actuating member and at least one plug member; the actuating member is mounted on the second cylinder of one of the pressure accumulation assemblies and has two high-level recesses spaced apart from each other, two low-level recesses extending along the axis with a level difference relative to the plurality of high-level recesses and spaced apart from the plurality of high-level recesses, and two protrusions spaced apart from each other and formed on a circumferential surface thereof; the plurality of protrusions are engaged with the plurality of second engagement slots of the second cylinder of said one pressure accumulation assembly; and the at least one plug member is connected to the shaft member and rollingly abuts against the actuating member so as to be selectively received in the plurality of high-level recesses or the plurality of low-level recesses.

7. The double-pressure accumulation hinge according to Claim 6, characterized in that the limiting portion of the second cylinder of one of the pressure accumulation assemblies has a second engagement slot extending along the axis direction from the end surface opposite to the rotating portion, and the actuating member has multiple spaced convex portions formed on its peripheral surface, with the multiple protrusion of the actuating member aligning with the multiple second engagement slot of the second cylinder of the aforementioned pressure accumulation assemblies.

8. The double-pressure accumulation hinge according to Claim 2, characterized in that the second cylinder of one of the pressure accumulation unit is pressed against the accumulation slider, and the limiting portion of the second cylinder of the pressure accumulation assemblies further has a rectangular opening formed on the end surface. The accumulation slider has a rectangular hole that extends from one end surface along the axis direction to the other end surface, and the cross-section of the shaft member is rectangular, fitting into the multiple rectangular holes.

9. The double-pressure accumulation hinge according to Claim 8, The characteristic is that the reset element group includes a torsion spring, which is positioned between the ratchet member and the second cylinder of one of the torsional accumulation units, and has two opposite end portions. The multiple end portions are connected to the ratchet member and the second cylinder of the torsional accumulation unit.

10. The double-pressure accumulation hinge according to Claim 1, characterized in that the pressure accumulation module of the aforementioned one pressure accumulation assemblies further has a pressure adjusting bolt, the aforementioned pressure adjusting bolt is screwed into the first cylinder of the aforementioned one pressure accumulation assemblies along the aforementioned axis and applies pressure to the aforementioned accumulation slide sleeve, and by changing the depth of screwing, forces the second cylinder of the aforementioned one pressure accumulation assemblies to move along the aforementioned axis.

11. The double-pressure accumulation hinge according to Claim 10, characterized in that the aforementioned shaft unit further includes two auxiliary elastic elements, wherein one aforementioned auxiliary elastic element is disposed between the aforementioned shaft member and the aforementioned pressure adjusting bolt, constantly generating an elastic force that moves the aforementioned shaft member along the aforementioned axis, and the other aforementioned auxiliary elastic element is disposed between the aforementioned ratchet member and the aforementioned shaft member, constantly generating an elastic force that moves the aforementioned shaft member along the aforementioned axis.

12. The double-pressure accumulation hinge according to Claim 1, characterized in that the first cylinder of the aforementioned other pressure accumulation assemblies has an annular teeth formed on the inner circumferential surface, and the aforementioned ratchet member has a socket portion sleeved onto the aforementioned shaft member, a driving portion extending from the aforementioned socket portion along the aforementioned axis and being operable, and a plurality of pawl teeth formed on the aforementioned socket portion and detachably engaged with the aforementioned annular teeth.

13. The double-pressure accumulation hinge according to Claim 12, characterized in that each aforementioned pressure accumulation assemblies further includes a locking bolt; the aforementioned ratchet member further has a C-shaped annular groove formed on the outer circumferential surface; the aforementioned locking bolt is screwed into the respective leaf along a direction perpendicular to the aforementioned axis and inserted into the respective first cylinder; the locking bolt of the aforementioned other pressure accumulation assemblies further has an extension portion; the aforementioned extension portion is detachably inserted through the annular groove of the aforementioned ratchet member.

Images