1. Field of the Invention
The present invention relates generally to a patch fitting with a closing function for mounting and closing a glass door and more particularly, to such a patch fitting that can be conveniently installed by a simple work.
2. Description of the Related Art
Conventionally, a glass door is supported by hinges for enabling the glass door to be pivotally opened or closed. Because the glass door has a certain weight, the pivots of the hinges may become unstable after the hinges are used for a long time, resulting in that the glass door may offset downwardly. If this phenomenon happens, when the glass door is opened or closed, the glass door may hit the floor easily to cause damage and in a worse situation, the glass door may be broken accidently. To resolve the aforesaid problem, a door closer concealedly mounted in the floor, i.e. the so-called “concealed floor door closer” or “floor hinge”, is nowadays used for holding the glass door.
The concealed floor door closer has the advantages of high reliability and high weight-bearing ability and is capable of adjusting the open angle and the return speed. However, before the concealed floor door closer is installed, the floor needs to be cut with a recessed mounting hole subject to the size of the concealed floor door closer to be mounted. After the door closer is embedded in the mounting hole, it usually needs to wait for another one or two days for mounting the glass door. The whole installation process of the conventional concealed floor door closer is quite complicated.
The present invention has been accomplished in view of the above-noted circumstances. It is an objective of the present invention to provide a patch fitting for a glass door, which can be easily installed on the floor and can provide a damping resistance against the opening force and closing force during the process of opening and closing the glass door.
To attain the above-mentioned objective, the patch fitting for a glass door provided by the present invention comprises a mount, a shaft, a clamping seat and a piston unit. The mount is adapted for being mounted on a floor. The shaft has a shaft body with an end connected with the mount, and an eccentric cam provided on the shaft body. The clamping seat is adapted for clamping the glass door. The clamping seat has an oil chamber and a shaft hole in fluid communication with the oil chamber. The shaft is inserted into the shaft hole of the clamping seat such that the clamping seat is turnable about the shaft along with a sweeping movement of the glass door. The piston unit is installed in the oil chamber of the clamping seat and contacted with the eccentric cam of the shaft, such that when the clamping seat is turned, the piston unit is actuated by the eccentric cam of the shaft to the press hydraulic oil contained in the oil chamber so as to provide a damping resistance in response to the sweeping movement of the glass door. The patch fitting can be easily mounted on the floor by a simple work and can provide a damping resistance of oil pressure to damp the opening force and the closing force exerting on the glass door.
In a preferred embodiment of the present invention, the mount of the patch fitting comprises a mounting plate, a plurality of adjustment members and an adjustment plate. The mounting plate has a receiving space and a periphery provided with a plurality of adjustment holes communicated with the receiving space. Each of the adjustment members is screwingly inserted in one of the adjustment holes of the mounting plate. The adjustment plate is arranged in the receiving space of the mounting plate, connected with the end of the shaft and stopped by the adjustment members such that the adjustment plate can be actuated by the adjustment members to move backward and forward or leftward and rightward or to rotate relative to the mounting plate so as to compensate the offset of the glass door for enabling the glass door to be closed positively.
The present invention will become more fully understood from the detailed description given herein below and the accompanying drawings which are given by way of illustration only, and thus are not limitative of the present invention, and wherein:
As shown in
The mount 20 includes a mounting plate 21, a plurality of adjustment member 22a, 22b, an adjustment plate 23, and two end plates 24. The mounting plate 21 is provided with a receiving space 212 at its center and two mounting holes 214 located respectively at left and right sides relative to the receiving space 212, through each of which an expansion bolt 25 is inserted such that the mounting plate 21 is fixedly mounted on the floor by the expansion blots 25, as shown in
As shown in
As shown in
The piston unit 50 is installed in the compartment 472 of the oil chamber 47 and will function at the time when the clamping seat 40 is turned. The piston unit 50 includes a piston 52, a contact member 54 and two springs 56 and 58. The piston 52 has an elongated through hole 522 through which the shaft body 32 of the shaft 30 passes, and two oil passages 524 at two end portions thereof for conducting hydraulic oil. The contact member 54, which is a roller in this embodiment, is rotatably mounted to the piston 52 by a pivot pin 542 and in contact with the eccentric cam 34 of the shaft 30, such that the contact member 54 will be pushed by the eccentric cam 34 to move at the time when the clamping seat 40 is turned. The spring 56 has two ends stopped at the piston 52 and one of the end caps 42 for providing a rebound force to return the piston 52. The spring 58 is inserted into inside of the spring 56 and has two ends stopped at the piston 52 and the one of the end caps 42 for providing a rebound force and a resilient compensation effect. It'll be appreciated that one of the springs 56 and 58 can be eliminated according to actual need.
The structure of the patch fitting 10 has been detailedly described as above and the feature and operation of the patch fitting 10 will be further recited hereunder.
When the glass door 12 is pushed to open, the clamping seat 40 will turn along with the sweeping movement of the glass door 12 about the shaft body 32 of the shaft 30, which is served as a pivot center. At this moment, the piston 52 is pushed by the eccentric cam 34 of the shaft 30 to move in the compartment 472 of the oil chamber 47 in a direction away from the regulation valves 48 and 49, resulting in that the hydraulic oil that is pressed by the piston 52 will flow from a left side of the piston 52 through the oil passages 524 to a right side of piston 52 as shown in
When the glass door 12 is closed, in an initial stage the piston 52 will be pushed by the spring 56 to move in a reverse direction to force the hydraulic oil to flow through the oil duct 474, the regulation valve 48 and the valve hole 476 into the compartment 472 and then flow toward the left side of the piston 52 through one of the oil passages 524 as shown in
On the other hand, if a displacement offset happens to cause misalignment of the door glass when the glass door is stayed in the closed position, the rotational offset or the offset in the backward and forward direction can be compensated by rotating the adjustment plate 23 or moving the adjustment plate 23 in the backward and forward direction in the receiving space 212, which can be done by pushing the two lateral sides of the adjustment plate 23 by the four adjustment members 22a, as shown in
As indicated above, the patch fitting 10 can be fixedly installed on the floor by a few of the expansion bolts 25. The floor doesn't need to be cut with a mounting hole for installation of the patch fitting 10, thereby simplifying the work of installation. In addition, the patch fitting 10 can provide a hydraulic oil damping resistance generated between the piston unit 50 and the hydraulic oil to damp the force for opening or closing the glass door. Further, after the patch fitting 10 is installed, the position of the glass door can be lightly adjusted to make sure that the glass door can be closed positively.
Number | Date | Country | Kind |
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101102277 | Jan 2012 | TW | national |