Patent Application
20110239810
1. Field of the Invention
The present invention relates to a guiding-wire controlling rod device for chair adjustment, which mainly has a pivoting rod pulling guiding-wires and a controlling rod pivotally aligning to the pivoting rod so that the guiding-wire controlling rod device has multiple operational stages and functions to respectively control the guiding-wires to simplify the setup procedure and to facilitate user's operation.
2. Description of Related Art
A comfortable chair must has multiple adjustment devices for various functions such as up-down adjustment of seat, forward-backward adjustment of backrest, inclining adjustment of backrest . . . etc. Because those adjustment devices are controlled by pulling of a guiding-wire, each adjustment device has a single controlling rod collected attached under the seat to allow user operating (by using guiding-wire to pull and to lead to set under the seat). Therefore, a chair with various functions completed must have several controlling rods under the seat to allow user to select between different functions in operation.
Although the conventional chair with multiple adjustment devices has its controlling rods for different functions mounted under the seat to make user to have handy operation, too many controlling rods make user difficult to remember the precise location of particular one for the function he/she desires and have to get up from the chair to check the right controlling rod. Therefore, it not only fails the setup intention of the controlling rods under the chair (it is suppose to make the user to operate when sitting on the chair) to cause inconvenience in practical operation, but also influences the appearance of the chair.
Although conventional electricity-generating device enables to achieve fundamental requirement and efficiency in respect of electricity-generating application, it still has drawbacks and insufficiency about environmental issue, stability, economic and development efficiency, and exclusivity of industrial application so that it cannot develop more specific industrial application.
A main objective of the present invention is to provide a guiding-wire controlling rod device that makes user to control different adjustment devices thereby.
To achieve the foregoing objective, the guiding-wire controlling rod device for chair adjustment comprises a pivoting rod with a rotation plate having two sides and pivotally attached inside a housing for pulling two guiding-wires; two wire-retaining notches defined on the two sides respectively; a controlling rod extending from the rotation plate to further pivotally engage a triggering rod in aligned form for controlling at least one more guiding-wire, wherein:
the pivoting rod is composed of the rotation plate and the controlling rod; the rotation plate has a front end and multiple abutting flat surfaces formed on the front end; the controlling rod has a wire-guiding groove and a pivot hole substantially perpendicularly communicated with the pivot hole of the rotation plate;
the housing is composed of an upper case and a lower case correspondingly combined; the lower case has a front end and a stop formed on the front end and has two wire tubes to align to the wire-retaining notches on the rotation plate; a resilient arc sheet is mounted on the stop to abut one of the multiple abutting flat surfaces;
triggering rod is a rod with a pin hole and has a wire-retaining notch aligning to the wire-guiding groove.
Further benefits and advantages of the present invention will become apparent after a careful reading of the detailed description with appropriate reference to the accompanying drawings.
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A guiding-wire controlling rod device for chair adjustment is mainly pivotally attached inside a housing by a rotation plate of a pivoting rod. The rotation plate has two sides each with a guiding-wire retaining notch and has multiple abutting flat surfaces formed at a front end of the rotation plate to abut with a resilient sheet to position the rotation plate at different angles. Moreover, a rear end of a controlling rod of the pivoting rod has a pivotal hole substantially perpendicularly adjacent to the rotation plate to pivotally engage with another controlling rod to drive other guiding-wires. Thereby, the controlling rods are aligned and control respectively multiple guiding-wires for different functions.
A guiding-wire controlling rod device for chair adjustment in the present invention is illustrated in a first embodiment in which the guiding-wire controlling rod device 10 has a rotation plate 17 of a pivoting rod 1 with two wire-retaining notches 11 on two sides of the rotation plate 17 respectively and pivotally mounted inside a housing 2 to accommodate two guiding-wires 8 (as shown in
By having above construction, the rotation plate 17 of the pivoting rod 1 is pivotally mounted inside the housing 2 by a shaft 91, and one of the multiple abutting flat surfaces 13 at the front end of the rotation plate 17 is abutted by the resilient arc sheet 25 on the stop 23 to keep the rotation plate 17 positioning. The wires 8 insides the wire-retaining notches 11 extend out via the two wire tubes 24 respectively. The controlling rod 14 extending backward is pivotally connected to the triggering rod 3 by a pin 92 to construct an aligning form to allow other wires 8 extending out via the wire-retaining notches 32. Therefore, the assembled guiding-wire controlling rod device 10 is located under the seat by screwing the housing 2 with screws 93 to the seat (not shown).
Another ends of the wires 8 extending out of the wire tubes 24 and the wire-retaining notches 32 respectively directly operate up-down adjustment of seat, forward-backward adjustment of backrest, or inclining adjustment of backrest . . . etc. to pull and drive the various adjustment devices (As shown in
First of all, because the rotation plate 17 of the pivoting rod 1 has the wire-retaining notches 11 on the two sides to provide combination of the two guiding-wires 8 (as shown in
Moreover, because the pivoting rod 1 is positioned by the resilient arc sheet 25 after being rotated slightly, the guiding-wire 8 keeps pulling when the user does not retrieve the controlling rod 14 so that such device is particularly suitable for incline adjustment of the backrest (take continuous pulling as an example, the connecting rod of the backrest is not positioned to make the backrest free to swing; when the controlling rod 14 is retrieved to loosen the guiding-wire 8, the connecting rod of the backrest is positioned again to keep the inclined angle of the backrest).
Moreover, by having the design that the controlling rod 14 pivotally connected with the triggering rod 3 by the pin 92, the wire-retaining notch 32 of the triggering rod 3 provides connection of another guiding-wire 8 through the wire-guiding groove 16 to extend to control an adjustment device (as shown in
In the above illustration, the pivot hole 12 of the rotation plate 17 and the pivot hole 15 of the controlling rod 14 are substantially perpendicularly communicated (with different rotational axial direction), therefore, the triggering rod 3 directly controls the corresponding adjustment devices when the guiding-wire controlling rod device 10 proceeds to pull the multiple guiding-wires 8 (when the triggering rod 3 is driven in vertical direction, the guiding-wire 8 in the wire-retaining notch 32 on the triggering rod 3 is pulled; when the triggering rod 3 is driven in horizontal direction, the guiding-wires 8 in the wire-retaining notches 11 on the pivoting rod 1 is pulled). Therefore, this structure not only facilitates user's operation but also integrates three guiding-wires 8 to be controlled by the triggering rod 3 in the guiding-wire controlling rod device 10 so that user easily remember the operation.
A second embodiment of the guiding-wire controlling rod device 10 is illustrated below:
By having above structure combination, the rotation plate 51 on the triggering rod 5 provide two guiding-wires 8 extending through the wire-guiding grooves 42 to pull and drive a corresponding adjustment device. Operation of trigger rod 5 is same as the one of the pivoting rod 1 (only difference is rotation direction whether in horizontal or vertical direction) so that user pulls and drives the different guiding-wires 8 by pulling in different horizontal or vertical directions to achieve the purpose of multi-wire control of the guiding-wire controlling rod device 10.
A third embodiment of the guiding-wire controlling rod device 10 is illustrated below:
By having above structure combination, the triggering rod 7 screws into the threaded hole 62 of the controlling rod 6 by penetrating the shaft hole 71 with the threaded rod 72 to make the triggering rod 7 rotatably mounted on the threaded shaft 72 engaged with the controlling rod 6. Meanwhile, the guiding-wire 8 is secured to the wire-retaining notch 74 on the triggering rod 7 and then goes through the recess 73 and the wire-guiding groove 61 to operate and pull the adjustment device. Then, the sleeve 75 is secured around the triggering rod 7 so that the guiding-wires 8 are enclosed between the sleeve 75 and the triggering rod 7 in the recess 73. Therefore, when the device works, the triggering rod 7 is pulled in horizontal direction to drive the guiding-wire 8 on the pivoting rod 1. Moreover, the triggering rod 7 is axially rotated (in clockwise or anti-clockwise) to pull a corresponding one of the two guiding-wires 8 to achieve adjustment function by such easy operation.
In above embodiments, all are performed by rotation operation and alignment with different rotating shaft so that the triggering rods 3, 5, 7 enable to drive the pivoting rod 1 and pull different guiding-wires 8 by pushing or rotating the triggering rods 3, 5, 7. To make an excellent practice, the guiding-wires 8 of the pivoting rod 1 are preferred for the incline adjustment device for backrest and the guiding-wires 8 from the triggering rods 3, 5, 7 are preferred for the up-down or frontward-backward movement devices for seat. To make user easily distinguish the different operations of the guiding-wire controlling rod device 10 for particularly functions, the pivoting rod 1 and the triggering rods 3, 5, 7 has different colors or appearance for distinguish, for example, the pivoting rod 1 is red for the incline adjustment device of backrest and the triggering rods 3, 5, 7 are blue for the up-down or frontward-backward movement devices of seat.
Although this invention has been described in its preferred form with a certain degree of particularity, it is understood that the present invention of the preferred form has been made only by way of example and that numerous changes in the details of construction and the combination and arrangement of parts any be resorted to without departing from the spirit and scope of the invention.
