Patent Publication Number: US-8967579-B2

Title: Angle inclining structure for a desk

Description:
FIELD OF THE INVENTION 
     The present invention relates to an angle inclining structure, and more particularly to an angle inclining structure for a desk which has a slow descending function and a safe positioning function. 
     BACKGROUND OF THE INVENTION 
     A conventional angle inclining structure for a desk is capable of adjusting an inclined angle of a plate of a desk, but it does not have a descending function. Therefore, when a user is desired to move the plate back to an original position after the plate is moved upwardly, the plate is manually pressed downward by the user, yet noises generate and the user is clamped by the plate easily. 
     To obtain a descending purpose, a hydraulic rod of a buffer structure is fixed on a bottom end of the plate so that the plate is adjusted toward a desired angle and is descended slowly. However, the plate still can not be fixed safely. 
     The present invention has arisen to mitigate and/or obviate the afore-described disadvantages. 
     SUMMARY OF THE INVENTION 
     The primary object of the present invention is to provide an angle inclining structure for a desk which has a slow descending function and a safe positioning function. 
     Another primary object of the present invention is to provide an angle inclining structure for a desk which retracts the first plate quickly and prevents from clipping the user&#39;s fingers. 
     To obtain the above objectives, an angle inclining structure for a desk provided by the present invention contains: 
     a body and an angle inclining structure, the body including two opposite support legs, a horizontal rod fixed between the two opposite support legs, and two support posts connected with two top ends of the two support legs and a first plate, the angle inclining structure being disposed between the horizontal rod and the first plate; wherein 
     the angle inclining structure is comprised of a holder, a covering member, and a buffer member, the holder includes a locking tab extending outwardly from one end thereof and axially connecting with the horizontal rod, a receiving room and a groove, both of which are defined on a top surface of the holder, and the receiving room is used to receive a retainer with a boss and a pushing element for pushing the retainer, the groove is applied to receive a positioning member; 
     the covering member includes a. slot, a plurality of tilted recesses communicating with the slot, the boss of the retainer is fixed in one of the plurality of tilted recesses, and the covering member also includes a locking hole defined thereon relative to the positioning member; 
     a free end of the buffer member axially couples with one end of the covering member and a bottom surface of the first plate so that when the first plate axially rotates upwardly, the covering member slides on the holder. 
     The foregoing, as well as additional objects, features and advantages of the invention will be more readily apparent from the following detailed description, which proceeds with reference to the accompanying drawings. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a perspective view showing the application of an angle inclining structure for a desk according to a preferred embodiment of the present invention. 
         FIG. 2  is a perspective view showing the assembly of the angle inclining structure for the desk according to the preferred embodiment of the present invention. 
         FIG. 3  is a perspective view showing the assembly of a part of the angle inclining structure for the desk according to the preferred embodiment of the present invention. 
         FIG. 4  is a perspective view showing the exploded components of the angle inclining structure for the desk according to the preferred embodiment of the present invention. 
         FIG. 5  is a plan view showing the operation of the angle inclining structure for the desk according to the preferred embodiment of the present invention. 
         FIG. 6  is another plan view showing the operation of the angle inclining structure for the desk according to the preferred embodiment of the present invention. 
         FIG. 7  is still a plan view showing the operation of the angle inclining structure for the desk according to the preferred embodiment of the present invention. 
         FIG. 8  is also a plan view showing the operation of the angle inclining structure for the desk according to the preferred embodiment of the present invention. 
         FIG. 9  is a plan view showing the operation of the angle inclining structure for the desk according to the preferred embodiment of the present invention. 
         FIG. 10  is a cross sectional view taken along the lines  9 - 9  of  FIG. 9 . 
     
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
       FIGS. 1 to 10 , an angle inclining structure for a desk comprises a body  10  and an angle inclining structure A. The body  10  includes two opposite support legs  11 , a horizontal rod  12  fixed between the two opposite support legs  11 , two support posts  13  connected with two top ends of the two support legs  11  and a first plate  20 , wherein the angle inclining structure A is disposed between the horizontal rod  12  and the first plate  20 . 
     It is to be noted that the angle inclining structure A is comprised of a holder  30 , a covering member  40 , and a buffer member  50 . The holder  30  includes a locking tab  31  extending outwardly from one end thereof and axially connecting with the horizontal rod  12 , a receiving room  32  and a groove  33 , both of which are defined on a top surface of the holder  30 , wherein the receiving room  32  is used to receive a retainer  34  with a boss  341  and a pushing element  35  for pushing the retainer  34 , and the groove  33  is applied to receive a positioning member  36 . 
     The covering member  40  includes a slot  41 , a plurality of tilted recesses  42  communicating with the slot  41 , a limiting portion  43  defined on one side of the slot  41  relative to the locking tab  31 , wherein the covering member  40  is mounted on a top surface of the holder  30  so that the boss  341  of the retainer  34  is fixed in the limiting portion  43 , and the covering member  40  also includes a locking hole  44  defined thereon relative to the positioning member  36  so as to lock the positioning member  36  and includes a peg  45  extending outwardly from one end thereof adjacent to another end of the slot  41 . 
     A free end of the buffer member  50  axially couples with the peg  45  and a bottom surface of the first plate  20  so that when the first plate  20  axially rotates upwardly, the covering member  40  slides on the holder  30 . 
     The buffer member  50  is comprised of a tube  51 , an adjusting valve  52 , a screw bolt  53 , a push stem  54  with a sealing plug  541 , and a frame  55 . One end of the tube  51  connects with the adjusting valve  52 , and another end of the tube  51  couples with the screw bolt  53 , the push stem  54  is fixed in the tube  51  so as to extend out of or retract into the tube  51 , and the frame  55  is mounted on two peripheral sides of the tube  51  to receive the holder  30  and the covering member  40 , wherein the holder  30  is connected with the frame  55 , the pushing element  35  is a spring, and the positioning member  36  is comprised of a spring  361  and a ball  362 . 
     The angle inclining structure further comprises a second plate  60  secured on two top ends of the two support posts  13  adjacent to the first plate  20 . 
     The buffer member  50  is a pneumatic cylinder or a hydraulic cylinder. 
     Referring to  FIGS. 1 to 10 , as desiring to adjust an tilted angle of the first plate  20 , the first plate  20  is pulled upwardly so that the covering member  40  and the push stem  54  are driven simultaneously, then the positioning member  36  disengages from the locking hole  44  of the covering member  40  so that the boss  341  of the retainer  34  retains with the limiting portion  43  of the covering member  40  (as shown in  FIG. 6 ). In the meantime, the first plate  20  tilts at a largest angle or at a desired angle adjusted by a user. In other words, when the first plate  20  is adjusted to tilt at the desired angle adjusted by the user, the boss  341  of the retainer  34  retains with one of the plurality of tilted recesses  42  (as illustrated in  FIG. 7 ), hence not only the angle of the first plate  20  is adjusted randomly, but also the retainer  34  is pushed by the pushing element  35  to position the first plate  20  securely, thereby adjusting and positioning the first plate easily. 
     As desiring to retracting of the first plate  20 , the first plate  20  is pulled upwardly further and then is released so that the first plate  20  moves downward by ways of its weight, and then the buffer member  50  produces a descending effect to descend the first plate  20  slowly, such that an anti-clamp angle produces between the first plate  20  and the second plate  60  (as shown in  FIG. 9 ). In other words, the first plate  20  is stopped descending to prevent from clamping the user&#39;s finger. Thereafter, the first plate  20  is further pressed downwardly so as to be parallel to the second plate  60 , and the positioning member  36  retains in the locking hole  44  of the covering member  40  (as illustrated in  FIG. 10 ), thereby retracting the first plate quickly and preventing from clipping the user&#39;s fingers. 
     While the preferred embodiments of the invention have been set forth for the purpose of disclosure, modifications of the disclosed embodiments of the invention as well as other embodiments thereof may occur to those skilled in the art. Accordingly, the appended claims are intended to cover all embodiments which do not depart from the spirit and scope of the invention.