Patent Grant
8539643
1. Field of the Invention
The instant disclosure relates to a hinge for glass doors; more particularly, to a damped spring hinge and a control device thereof.
2. Description of Related Art
Glass doors are frequently used in public buildings and shower rooms. Most glass doors can be closed automatically. Conventional glass doors are usually hinged to fixed walls or glass panels. Springs are normally used for the self-closing hinges, which tend to generate excessive impacts as the doors close.
To address the above issue, the inventor proposes the following solution.
One aspect of the instant disclosure is to provide a damped spring hinge and a control device thereof. An elastic unit would generate the self-closing action, while the control device provides damping with hydraulic oil to reduce door impact.
Another aspect of the instant disclosure is to provide a damped spring hinge and a control device thereof, wherein a throttle valve is used to adjust the flow of hydraulic oil for controlling the door closing speed.
The damped spring hinge comprises: a shaft seat having a seat body with a shaft hole and a receiving hole formed therein, wherein the shaft hole is passaged to the receiving hole, with a oil conduit being formed in the seat body for connecting to the shaft hole and the receiving hole at opposite ends; a shaft rotatably disposed in the shaft hole, wherein a fixing surface is formed on the shaft; a sleeve disposed in the receiving hole; a sliding member having an opening formed on one end thereof slidably disposed in the sleeve, wherein an oil reservoir for hydraulic oil is formed by the sliding member and the sleeve, and wherein one end of the sliding member abuts to the fixing surface; an elastic unit disposed in between the sleeve and the sliding member; a non-return valve disposed in the oil reservoir; a throttle valve disposed on the shaft seat and extends to the oil conduit; a first connecting member connected to the shaft seat; and a second connecting member connected to the shaft.
The control device of the damped spring hinge comprises: a shaft seat having a seat body with a shaft hole and a receiving hole formed therein, wherein the shaft hole is passaged to the receiving hole, with a oil conduit being formed in the seat body for connecting to the shaft hole and the receiving hole at opposite ends; a shaft rotatably disposed in the shaft hole, wherein a fixing surface is formed on the shaft; a sleeve disposed in the receiving hole; a sliding member having an opening formed on one end thereof slidably disposed in the sleeve, wherein an oil reservoir for hydraulic oil is formed by the sliding member and the sleeve, and wherein one end of the sliding member abuts to the fixing surface; an elastic unit disposed in between the sleeve and the sliding member; a non-return valve disposed in the oil reservoir; and a throttle valve disposed on the shaft seat and extends to the oil conduit.
The instant disclosure has the following advantage. The control device is comprised of a shaft seat, a shaft, a sleeve, an elastic unit, a non-return valve, and a throttle valve. The control device has an oil reservoir and a oil conduit formed therein for circulating hydraulic oil. When the door shuts, the fixing surface is restored to the original position by the sliding member due to the elastic unit. At such state, the sliding member is slid away from the sleeve. The hydraulic oil would push a closing member toward an orifice of a valve seat to create a seal. Thereby, the hydraulic oil can only return to the reservoir by circulating through the oil conduit. A throttle valve of the oil conduit regulates the oil flow for controlling the damping effect. Thus, less impact can be generated when shutting the door.
In order to further appreciate the characteristics and technical contents of the instant disclosure, references are hereunder made to the detailed descriptions and appended drawings in connection with the instant disclosure. However, the appended drawings are merely shown for exemplary purposes, rather than being used to restrict the scope of the instant disclosure.
Please refer to
The hinge comprises a shaft seat 1, a shaft 2, a sleeve 3, a sliding member 4, an elastic unit 5, a non-return valve 6, a throttle valve 7, a first connecting member 8, and a second connecting member 9. The shaft seat 1 has a seat body 11, which has a shaft hole 12 and a receiving hole 13 formed therein. The shaft hole 12 is projected thru the seat body 11 from side to side. The receiving hole 13 is open to another side of the seat body 11 on one end and passaged to the shaft hole 12 on the opposite end. An oil conduit 14 is formed inside the seat body 11 for oil circulation, wherein the opposite ends of the oil conduit 14 is connected to the shaft hole 12 and the receiving hole 13.
The shaft 2 can be rotatably disposed in the shaft hole 12 of the seat body 11. A bearing 15 is disposed at opposite ends of the shaft 2 in the seat body 11 for smooth shaft rotation. Both ends of the shaft 2 protrude from the shaft seat 1 for securing to the second connecting member 9. A flat fixing surface 21 is formed on the middle portion of the shaft 2 for door (e.g. glass door) rotation purpose. The fixing surface 21 is arranged to face the receiving hole 13.
The sleeve 3 has a tubular body for disposing in the receiving hole 13 of the seat body 11. An O-ring 31 is disposed on the sleeve 3 in the receiving hole 13 to improve sealing. The sleeve 3 can be filled with the hydraulic oil to seal one end of the receiving hole 13. An opening 34 is formed on one side of the sleeve 3 that communicates with the oil conduit 14.
The sliding member 4 is barrel-shaped having a closed end with a thru hole 41 formed thereon, with an opposite end being open-ended. The sliding member 4 can be slidably disposed in the sleeve 3, wherein the sliding member 4 can slide back and forth therein. Together, the sleeve 3 and the sliding member 4 form an enclosure for storing hydraulic oil, thus an oil reservoir 42 is established. The holed end of the sliding member 4 abuts to the fixing surface 21 of the shaft 2.
The elastic unit 5 includes at least a coil spring. For the instant embodiment, a first spring 51 and a second spring 52 are disposed in the oil reservoir 42. The first and second springs 51 and 52 abut to the sleeve 3 on one end and the sliding member 4 indirectly on the opposite end. By disposing the elastic unit 5 in between the sleeve 3 and the sliding member 4, the sliding member 4 can be actuated. In other words, the sliding member 4 can abut to the fixing surface 21 of the shaft 2 elastically, wherein the elastic unit 5 provides the restoring energy for the self-closing door.
The non-return valve 6 is disposed within the oil reservoir 42. As long as the non-return valve 6 can block reverse flow, there is no structural restriction for the non-return valve 6. For the instant embodiment, the non-return valve 6 has a valve seat 61 and a closing member 62. An orifice 611 is formed on the valve seat 61. The closing member 62 is disposed at one side of the valve seat 61 and aligns to the orifice 611. The closing member 62 is disposed in between the valve seat 61 and the thru hole 41 of the sliding member 4. The above arrangement lets the hydraulic oil to flow in one direction only. In other words, the hydraulic oil of the oil reservoir 42 can only flow in the direction from the orifice 611 of the valve seat 61 to the thru hole 41 of the sliding member 4. If the oil flows in reverse direction, the reverse flow would move the closing member 62 to abut against the orifice 611 of the valve seat 61 in creating a seal. Thus, backflowing is prevented in achieving the non-return effect. The elastic unit 5 (first spring 51 and the second spring 52) abuts to the valve seat 61 on one end. Thus, the spring force of the elastic unit 5 is transmitted by the valve seat 61 to actuate the sliding member 4.
The throttle valve 7 is disposed on the shaft seat 1. For the instant embodiment, the throttle valve 7 is bolted to the seat body 11 of the shaft seat 1. The throttle valve 7 has a tapered portion 71 on one end that extends into the oil conduit 14 and near the opening 34 of the sleeve 3. Thereby, the throttle valve 7 can be used to adjust the oil flow through the oil conduit 14 to change the damping effect accordingly. An O-ring 72 is disposed on the throttle valve 7 in the seat body 11 for sealing.
The first connecting member 8 and the second connecting member 9 connect to the shaft seat 1 and the shaft 2 respectively. The first connecting member 8 includes a first press plate 81 and a second press plate 82. A plurality of gaskets 83 are disposed in between the first and second press plates 81 and 82. Two fasteners 84, such as pins, are used to secure the first press plate 81 onto the shaft seat 1. Meanwhile, a plurality of fasteners 85 can be used to mount the first and second press plates 81 and 82 onto the glass panels.
The second connecting member 9 includes a third press plate 91 and a fourth press plate 92. Likewise, a plurality of gaskets 93 are disposed in between the third and fourth press plates 91 and 92. A sealing cover 94 is pinned or glued to one end of the third press plate 91. The sealing cover 94 is disposed in between the shaft seat 1 and the second connecting member 9 to improve sealing. A plurality of fasteners 95 can be used to mount the third and fourth press plates 91 and 92 onto the doors (e.g. glass doors). Thereby, the door can be secured pivotally to the fixed glass panel for opening and closing.
Please refer to
For the instant disclosure, the self-closing actuation is provided by the elastic unit 5. As shown in
The control device of the instant disclosure is comprised of the shaft seat 1, the shaft 2, the sleeve 3, the sliding member 4, the elastic unit 5, the non-return valve 6, and the throttle valve 7. Plus, for the control device, the oil reservoir 42 and the oil conduit 14 for oil circulation are formed therein. When the door swings open, the shaft 2 is rotated against the sliding member 4, which collapses the elastic unit 5 for the door to be opened. At such state, the sliding member 4 is moved toward the sleeve 3, wherein the oil reservoir 42 is squeezed in becoming smaller. As a result, the stored hydraulic oil is forced to exit through the orifice 611 of the valve seat 61. No damping effect is created at this point, wherein the door can be easily opened.
When the door closes, the sliding member 4 is actuated by the spring force as the elastic unit 5 releases. The actuated sliding member 4 would turn the shaft 2 and abuts the fixing surface 21 as prior to the door being opened. At such state, the sliding member 4 moves away from the sleeve 3 as the oil reservoir 42 is expanded. The hydraulic oil would flow in reverse direction and push the closing member 62 against the orifice 611 of the valve seal 61 to create a seal. Thus, a non-return effect is created, wherein the hydraulic oil can only return to the oil reservoir 42 by circulating through the oil conduit 14. To adjust the oil flow, the throttle valve 7 is disposed in the oil conduit 14 to control the damping effect. Thereby, less impact is created when the door is self-closing.
The descriptions illustrated supra set forth simply the preferred embodiments of the instant disclosure; however, the characteristics of the instant disclosure are by no means restricted thereto. All changes, alternations, or modifications conveniently considered by those skilled in the art are deemed to be encompassed within the scope of the instant disclosure delineated by the following claims.
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| WO 2007125524 | Nov 2007 | WO |
| Number | Date | Country | |
|---|---|---|---|
| 20120279015 A1 | Nov 2012 | US |
