Patent Publication Number: US-8985129-B2

Title: Sunshade umbrella capable of adjusting umbrella surface angle

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     This application claims the benefit of Chinese application 201220556955.1, filed Oct. 29, 2012, the disclosure of which is hereby incorporated by reference in the present disclosure in its entirety. 
     FIELD OF THE INVENTION 
     The present invention relates to a sunshade umbrella capable of adjusting umbrella surface angle. 
     BACKGROUND OF THE INVENTION 
     Currently, various types of sunshade umbrella capable of adjusting umbrella surface angle on the market have different specific adjusting device , including internal and external gear axial movement type, worm and gear type, and the type that two end face gear plate are separated by the engaging of push rod and spring. But such adjusting devices are complex, cumbersome to assembly, and having high manufacture costs. Additionally, there is only one connecting rod equipped between the adjusting device and the umbrella stand, so the overall firmness is low and the adjusting device is easy to damage. 
     SUMMARY OF THE INVENTION 
     The technical problem to be solved by the invention is directed to provide a sunshade umbrella capable of adjusting umbrella surface angle, which is convenient to operate, manufacture and assemble and also have simple and reliable structure. 
     To solve the above technical problem, the present invention provides a sunshade umbrella capable of adjusting umbrella surface angle, including a upright rod and a upright rod handle which moves up and down along the upright rod, wherein one end of the upright rod is connected with umbrella base, the other end of the upright rod is hinged with the connecting rod, the other end of the connecting rod is hinged with a circumferential fixed hanger rod, the hanger rod is hinged with the upright rod handle, an umbrella surface angle adjusting device is mounted on one end of the hanger rod, an executing device that takes the circumferential movement around the hanger rod is mounted on the other end of the hanger rod, the executing device is connected with an upper umbrella plate, and the executing device includes an adjusting connector, an adjusting connecting rod and an end sleeve of hanger rod, wherein the end sleeve of hanger rod is sleeved on the hanger rod, the adjusting connector is fixedly connected with the end sleeve of hanger rod, one end of the adjusting connector is fixedly connected with the adjusting connecting rod, the other end of the adjusting connector is hinged with the upper umbrella plate, and the other end of the adjusting connecting rod is connected with the umbrella surface angle adjusting device. The umbrella surface angle adjusting device and the executing device is connected with each other respectively by the hanger rod and the adjusting connecting rod, so as to improve the overall firmness and enhance the wind resistance. 
     Preferably, the umbrella surface angle adjusting device includes a shell, an adjusting button, an outer ring gear and a positioning member. the positioning member is engaged with the outer ring gear, two ends of the outer ring gear are provided with sliding bearings, the sliding bearing is circumferential movably connected with the shell, a compressed spring is sleeved on the positioning member, the end of outer ring gear is abutted with the guide groove on the shell, the outer ring gear is fixedly connected with the hanger rod, one end of the adjusting button is hinged with the shell, and the other end of the adjusting button is hinged with the positioning member. A waist-shaped hole is formed on the adjusting button and located at the site where the adjusting button is hinged with the shell, the pin roll located on the shell moves along the waist-shaped hole, and the adjusting connecting rod is fixedly connected with the shell. After the positioning member is detached from the outer ring gear, the shell can do the circumferential movement around the hanger rod, the adjusting connecting rod is driven by the shell to rotate angle, and then the end sleeve of hanger rod is driven to do the circumferential movement around the hanger rod, so as to adjust the umbrella surface angle; when the outer ring gear is engaged with the positioning member, the adjustable connecting rod is made to do circumferential location, so as to position the umbrella surface angle. 
     Preferably, the positioning member is a stepped pin, a meshing member that is meshed with the outer ring gear is located at the large diameter end of the stepped pin, the small diameter end of the stepped pin is hinged with the adjusting button, the compressed spring is located at the small diameter end of the stepped pin, one side of the compressed spring is abutted with the large diameter end of the stepped pin, the other side of the compressed spring is abutted with the guide groove on the shell. With the meshing contact way, the contact area is increased; the circumferential positioning device is more solid and durable. 
     Preferably the stepped pin is integrally molded with the engaging member. The stepped pin is integrally cast with the meshing member, to have a higher strength. 
     By adopting the above structure, compared with the prior art, the sunshade umbrella capable of adjusting umbrella surface angle of the present invention has the following advantages: increased overall firmness of the sunshade umbrella, simple structure, convenient to operate, and easy to manufacture, so the drawbacks in the prior art such as complex structure, cumbersome assembly and inconvenient operation can be solved. 
    
    
     
       DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is structure schematic diagram of the present invention; 
         FIG. 2  is a partially enlarged view of the present invention A; 
         FIG. 3  is a partially enlarged view of the present invention B; and 
         FIG. 4  is an exploded view of the of an umbrella surface angle adjusting device of the present invention. 
     
    
    
     In which: upright rod  1 , upright rod handle  2 , umbrella base  3 , connecting rod  4 , hanger rod  5 , umbrella surface angle adjusting device  6 , executing device  7 , upper umbrella plate  8 , adjusting connector  9 , adjusting connecting rod  10 , end sleeve of hanger rod  11 , shell  12 , adjusting button  13 , waist-shaped hole  14 , outer ring gear  15 , sliding bearing  16 , positioning member  17 , compressed spring  18 , guide groove  19 . 
     DETAILED DESCRIPTION OF THE INVENTION 
     As follows, the present invention is further described in detail with the aid of embodiments and accompanying figures. 
     As shown in  FIG. 1 , The embodiment provides a sunshade umbrella capable of adjusting umbrella surface angle, including a upright rod  1  and a upright rod handle  2  which moves up and down along the upright rod, wherein one end of the upright rod  1  is connected with umbrella base  3 , the other end of the upright rod  1  is hinged with the connecting rod  4 , the other end of the connecting rod  4  is hinged with a circumferential fixed hanger rod  5 , the hanger rod  5  is hinged with the upright rod handle  2 , an umbrella surface angle adjusting device  6  is mounted on one end of the hanger rod  5 , an executing device  7  that takes the circumferential movement around the hanger rod  5  is mounted on the other end of the hanger rod  5 , and the executing device  7  is connected with an upper umbrella plate  8 . The executing device  7  includes an adjusting connector  9 , an adjusting connecting rod  10  and an end sleeve of hanger rod  11 , wherein the end sleeve of hanger rod  11  is sleeved on the hanger rod  5 , the adjusting connector  9  is fixedly connected with the end sleeve of hanger rod  11 , one end of the adjusting connector  9  is fixedly connected with the adjusting connecting rod  10 , the other end of the adjusting connector  9  is hinged with the upper umbrella plate  8 , and the other end of the adjusting connecting rod  10  is connected with the umbrella surface angle adjusting device  6 . 
     As shown in  FIGS. 2-4 , the umbrella surface angle adjusting device  6  includes a shell  12 , an adjusting button  13 , an outer ring gear  15  and a positioning member  17 , wherein the positioning member  17  is engaged with the outer ring gear  15 , two ends of the outer ring gear  15  are provided with sliding bearings  16 , the sliding bearing  16  is circumferential movably connected with the shell  12 , a compressed spring  18  is sleeved on the positioning member  17 , the end of outer ring gear  15  is abutted with the guide groove  19  on the shell  12 , the outer ring gear  15  is fixedly connected with the hanger rod  5 , one end of the adjusting button  13  is hinged with the shell  12 , and the other end of the adjusting button  13  is hinged with the positioning member  17 . A waist-shaped hole  14  is formed on the adjusting button  13  and located at the site where the adjusting button  13  is hinged with the shell  12 , the pin roll  20  located on the shell  12  moves along the waist-shaped hole  14 , and the adjusting connecting rod  10  is fixedly connected with the shell  12 . 
     The positioning member  17  is a stepped pin, an engaging member  21  (meshing member) that is engaged with the outer ring gear  15  is located at the large diameter end of the stepped pin, and the small diameter end of the stepped pin is hinged with the adjusting button  13 . The compressed spring  18  is located at the small diameter end of the stepped pin, wherein one side of the compressed spring  18  is abutted with the large diameter end of the stepped pin, and the other side of the compressed spring is abutted with the guide groove  19  on the shell  12 . The stepped pin is integrally cast with the engaging member  21  (meshing member). 
     When an outside force is applied on the adjusting button  13 , the compressed spring  18  is compressed, and the positioning member  17  is detached from the outer ring gear  15  by moving down Handing the adjust button  13  makes the button  13  take the circumferential movement around the hanger  5 , drive the shell  12  rotation, and then drive the adjusting connecting rod  10  rotate the required angle. The adjusting connecting rod  10  is fixedly connected with the adjusting connector  9 , and the adjusting connector  9  is fixedly connected with the end sleeve of hanger rod  11 , such that the end sleeve of hanger rod  11  is driven by the adjusting connecting rod  10  to do the circumferential movement around the hanger rod  5 , the adjusting connector  9  is connected with the upper umbrella plate  8 , and then the whole umbrella surface is driven to swing angle, so as to adjust the umbrella surface angle; When the adjusting button  13  is released, the outer ring gear  15  is engaged with the positioning member  17  under the action of the spring force to locate the shell  12  circumferentially, so as to position the umbrella surface angle.