The present invention relates to an adjustable table and more particularly to a table with an angle adjustable tabletop.
Referring to
When the tabletop (46) is horizontal, the hollow rib (434) of the pivot base (43) is configured to align with a lowest one of the blocking holes (424), and the protruding head end (453) is adapted to engage with the blocking hole (424), thereby securing the tabletop (46) at a horizontal position through the spring (44). When the use angle of the tabletop (46) needs to be changed, a user can pull the pulling portion (451) of the lever (45) outwardly to move the head end (453) inwardly (as shown in
However, the conventional adjustable table is disadvantageous because: (i) the lever (45) only can engage on a single lateral side of the pivot base (43), and when another lateral side of the pivot base (43) is pressed, the pivot base (43) is configured to misalign with the locating seat (42), leading to the unstableness of the tabletop (46); and (ii) it needs a lot of efforts for a user to adjust the angle of the tabletop (46) in a manner of pulling the lever (45). Therefore, there remains a need for a new and improved design for an adjustable table to overcome the problems presented above.
The present invention provides an adjustable table which comprises a base, an adjusting unit and a tabletop, and the adjusting unit further has a locating seat, a sliding seat, a spring, a first shaft, a connecting rod and a bent operating rod. The base has a supporting rod extending upwardly from a central top surface of the base, and a top end of the supporting rod is configured to connect to the locating seat. The locating seat has a first top plate, and each of two lateral edges of the first top plate is vertically connected to a first side plate. Two arc-shaped elongated grooves respectively penetrate through the two first side plates at corresponding positions, and each of the elongated grooves has a plurality of positioning holes and a locating hole, and the positioning holes are adapted to laterally penetrate through an upper portion of the elongated groove while the locating hole is configured to laterally penetrate through a lower end of the elongated groove. Moreover, a diameter of each of the positioning holes and a diameter of the locating hole are respectively larger than the elongated groove. The sliding seat has a second top plate, and each of two lateral edges of the second top plate is vertically connected to a second side plate. The sliding seat is configured to cover the locating seat, and a second shaft is adapted to penetrate through and pivotally secure the sliding seat and the locating seat together. Furthermore, the tabletop is configured to be mounted on the second top plate. Each of the two second side plates has a through hole, and the two through holes are located at corresponding positions. One of the second side plates is connected to a bracket at an outer surface thereof, and the bracket is located at a position horizontally aligned with the through hole.
The first shaft, the connecting rod and the operating rod are configured to be connected sequentially and to pivotally connect to the sliding seat and the locating seat through the bracket. The first shaft has two neck portions which have a smaller diameter to separate a first section, a second section and a third section of the first shaft. Also, a locating bolt is adapted to penetrate through the third section. Through the first section, the first shaft is configured to sequentially pass through the spring, the through hole and the elongated groove close to the bracket, and the elongated groove and the through hole away from the bracket to connect to a blocking member which is adapted to enable the first shaft to have limited horizontal movement relative to the locating seat and the sliding seat, thereby preventing the first shaft from detaching from the locating seat and the sliding seat. The spring is configured to bear against the sliding seat and the locating bolt at two ends thereof, and without external force, the spring is adapted to enable the first section and the second section to respectively engage with two corresponding positioning holes on the two first side plates, thereby securing positions of the sliding seat and the tabletop. The operating rod comprises a first rod body and a second rod body, and the first rod body is pivotally coupled in the bracket to enable the second rod body to protrude from a lateral end of the bracket. The connecting rod pivotally connected between the first rod body and the third section of the first shaft is adapted to transfer momentum from the operating rod to the first shaft when a user applies force on the operating rod.
Comparing with conventional adjustable table, the present invention is advantageous because: (i) the first shaft is configured to simultaneously couple with the two first side plates, which significantly improves the stableness of the adjustable table when the tabletop bearing weight; and (ii) it is a labor-saving manner that the first shaft is driven through the first rod body and the connecting rod when the second rod body is pulled upwardly.
The detailed description set forth below is intended as a description of the presently exemplary device provided in accordance with aspects of the present invention and is not intended to represent the only forms in which the present invention may be prepared or utilized. It is to be understood, rather, that the same or equivalent functions and components may be accomplished by different embodiments that are also intended to be encompassed within the spirit and scope of the invention.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood to one of ordinary skill in the art to which this invention belongs. Although any methods, devices and materials similar or equivalent to those described can be used in the practice or testing of the invention, the exemplary methods, devices and materials are now described.
All publications mentioned are incorporated by reference for the purpose of describing and disclosing, for example, the designs and methodologies that are described in the publications that might be used in connection with the presently described invention. The publications listed or discussed above, below and throughout the text are provided solely for their disclosure prior to the filing date of the present application. Nothing herein is to be construed as an admission that the inventors are not entitled to antedate such disclosure by virtue of prior invention.
In order to further understand the goal, characteristics and effect of the present invention, a number of embodiments along with the drawings are illustrated as following:
Referring to
The first shaft (24), the connecting rod (25) and the operating rod (26) are configured to be connected sequentially and to pivotally connect to the sliding seat (22) and the locating seat (21) through the bracket (224). The first shaft (24) has two neck portions (241) which have a smaller diameter to separate a first section (242), a second section (243) and a third section (244) of the first shaft (24). Also, a locating bolt (245) is adapted to penetrate through the third section (244). Through the first section (242), the first shaft (24) is configured to sequentially pass through the spring (23), the through hole (223) and the elongated groove (213) close to the bracket (224), and the elongated groove (213) and the through hole (223) away from the bracket (224) to connect to a blocking member (28) which is adapted to enable the first shaft (24) to have limited horizontal movement relative to the locating seat (21) and the sliding seat (22), thereby preventing the first shaft (24) from detaching from the locating seat (21) and the sliding seat (22). The spring (23) is configured to bear against the sliding seat (22) and the locating bolt (245) at two ends thereof, and without external force, the spring (23) is adapted to enable the first section (242) and the second section (243) to respectively engage with two corresponding positioning holes (214) on the two first side plates (212), thereby securing positions of the sliding seat (22) and the tabletop (30). The operating rod (26) comprises a first rod body (261) and a second rod body (262), and the first rod body (261) is pivotally coupled in the bracket (224) to enable the second rod body (262) to protrude from a lateral end of the bracket (224). The connecting rod (25) pivotally connected between the first rod body (261) and the third section (244) of the first shaft (24) is adapted to transfer momentum from the operating rod (26) to the first shaft (24) when a user applies force on the operating rod (26).
In one embodiment, the supporting rod (11) of the base (10) is a telescopic rod.
In another embodiment, the positioning holes (214) on the first side plate (212) are arranged continuously, and two adjacent positioning holes (214) are partially overlapped.
In still another embodiment, a protruding tube (225) is formed on the outer surface of the second side plate (222) of the sliding seat (22) at a position corresponding to the bracket (224) for being abutted against by the spring (23).
In actual application, a user can adjust the angle of the tabletop (30) by pulling the second rod body (262) upwardly, and the first rod body (261) and the connecting rod (25) are driven to move the first shaft (24) horizontally (as shown in
Comparing with conventional adjustable table, the present invention is advantageous because: (i) the first shaft (24) is configured to simultaneously couple with the two first side plates (212), which significantly improves the stableness of the adjustable table when the tabletop (30) bearing weight; and (ii) it is a labor-saving manner that the first shaft (24) is driven through the first rod body (261) and the connecting rod (25) when the second rod body (262) is pulled upwardly.
Having described the invention by the description and illustrations above, it should be understood that these are exemplary of the invention and are not to be considered as limiting. Accordingly, the invention is not to be considered as limited by the foregoing description, but includes any equivalents.
Number | Name | Date | Kind |
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8020816 | Laitila | Sep 2011 | B2 |
20030094123 | Ulmer | May 2003 | A1 |
20060016945 | Taylor | Jan 2006 | A1 |
20120073476 | Lai | Mar 2012 | A1 |
Number | Date | Country |
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M339956 | Sep 2008 | TW |