Patent Publication Number: US-2023160377-A1

Title: Floor pump

Description:
BACKGROUND 
     The present invention relates to a floor pump and more particular, to a floor pump with legs. 
     Taiwan Patent No. TW409785U discloses an inflation pump auxiliary positioning device. It is mainly provided with a positioning device and a receiving portion formed in a middle of the positioning device for sleeving on an outer edge wall of a pump body, and symmetrical flanges are arranged on both sides of the positioning device. Outer periphery walls of the flanges has notch grooves, and a sleeve with an elastic member is placed inside the flange. In addition, one end of a support frame forms symmetrical contact surfaces, and the other end has a concave edge groove. One side inner wall of the concave edge groove is protruded with an engaging block, and an extension rod is arranged inside. The concave edge groove is correspondingly covered on the flange of the positioning device, so that the engaging block in the concave edge groove is fastened to the notch grooves of the flange, and the flanges on both sides of the positioning device are accommodated and sleeved by the sleeve with the elastic member, so that the extension rod in the concave edge groove is connected with the sleeve. 
     However, when the positioning device is unfolded or folded, the engaging block must be precisely aligned and engaged into the notch groove to achieve the positioning effect. Not only is the operation lacking in convenience, but also the supporting force generated by the engaging cooperation between the notch groove and the engaging block is insufficient, and if the load is too large, the positioning device may be damaged. 
     Thus, a need exists for a novel floor pump to mitigate and/or obviate the above disadvantages. 
     SUMMARY 
     An objective of the present invention is to provide a floor pump including a main body and a supporting device. The supporting device includes a base and a first leg. The base is fixed to the main body and has a first stopping flange and a second stopping flange. The first leg is pivotally connected to the base and rotatable relative to the base about a first rotation axis, and the first leg is axially movable along the first rotation axis to approach or move away from the base. The first leg has a front end and a rear end. The first leg forms a front section between the front end and the first rotation axis, and the first leg forms a rear section between the rear end and the first rotation axis. The first leg has a first side and a second side opposite to the first side on an outer periphery thereof along a radial direction of the first rotation axis. When the first leg is moved away from the base, the first leg is rotatable relative to the base. When the first leg is approached to the base, the first leg is limited to a folded position or an unfolded position. When the first leg is in the folded position, one side of the front section adjacent to the first side is close to the first stopping flange, and one side of the rear section adjacent to the second side is close to the second stopping flange, and the front end is approached to the main body. When the first leg is in the unfolded position, one side of the front section adjacent to the second side is close to the first stopping flange, and one side of the rear section adjacent to the first side is close to the second stopping flange, and the front end is distal away from the main body. 
     In an embodiment, the base is connected to an axial rod having an outer periphery sleeved by an axial sleeve. The first leg has a pivot hole along an axial direction of the first rotation axis. The floor pump further includes a pivot mechanism. The pivot mechanism includes a biasing member, a cover sleeve, and a pull collar. The biasing member sleeves on the axial sleeve. The cover sleeve inserts into the pivot hole and sleeves on the biasing member. One end of the biasing member along the axial direction of the first rotation axis abuts against the axial sleeve and another end of the biasing member abuts against the cover sleeve, and the pull collar is connected to the cover sleeve and located at one side of the first leg opposite to the base. 
     In an embodiment, the side of the first leg opposite to the base has an engaging recess disposed adjacent to the pivot hole. One side of the pull collar adjacent to the first leg has an engaging flange engaged with the engaging recess. The first leg and the pull collar is axially movable along the first rotation axis synchronously. When the first leg is moved away from the base, the first leg and the pull collar is rotatable relative to each other synchronously. 
     In an embodiment, the base further has a third stopping flange and a fourth stopping flange. The third stopping flange and the first stopping flange are respectively disposed on opposite sides of the base and form a symmetrical structure. The fourth stopping flange and the second stopping flange are respectively disposed on opposite sides of the base and form a symmetrical structure. The supporting device further includes a second leg. The second leg is pivotally connected to the base and rotatable relative to the base about a second rotation axis, and the second leg is axially movable along the second rotation axis to approach or move away from the base, When the second leg is moved away from the base, the second leg is rotatable relative to the base. When the second leg is approached to the base, the second leg is limited, and the second leg and the first leg are respectively arranged on two opposite sides of the base and form a symmetrical structure. 
     In an embodiment, the base has a first limiting flange, When the first leg is in the folded position, the first leg is limited between the first stopping flange and the first limiting flange, When the first leg is in the unfolded position, the first leg is limited between the first limiting flange and the second stopping flange. 
     In an embodiment, the base further has a third stopping flange, a fourth stopping flange, and a second limiting flange. The third stopping flange and the first stopping flange are respectively arranged on two opposite sides of the base and form a symmetrical structure. The fourth stopping flange and the second stopping flange are respectively arranged on the two opposite sides of the base and form a symmetrical structure. The second limiting flange and the first limiting flange are respectively arranged on the two opposite sides of the base and form a symmetrical structure. The supporting device further includes a second leg. The second leg is pivotally connected to the base and rotatable relative to the base about a second rotation axis, and the second leg is axially movable along the second rotation axis to approach or move away from the base, When the second leg is moved away from the base, the second leg is rotatable relative to the base. When the second leg is approached to the base, the second leg is limited, and the second leg and the first leg are respectively arranged on the two opposite sides of the base and form a symmetrical structure. 
     In an embodiment, the main body has a footrest. The footrest has a connection flange extending in a vertical direction. An outer periphery of the connection flange has a T-shaped cross section in a horizontal direction. The base has a connection groove and is movable in the vertical direction to cause the connection groove to sleeve on the connection flange. An inner periphery of the connection groove has a T-shaped cross section in the horizontal direction. 
     Another objective of the present invention is to provide a floor pump including a main body and a supporting device. The supporting device includes a base and a first leg. The base is fixed to the main body and has a first stopping flange and a second stopping flange. The first leg is pivotally connected to the base and rotatable relative to the base about a first rotation axis, and the first leg is axially movable along the first rotation axis to approach or move away from the base. The first leg has a front end and a rear end. The first leg forms a front section between the front end and the first rotation axis, and the first leg forms a rear section between the rear end and the first rotation axis. The first leg has a first side and a second side opposite to the first side on an outer periphery thereof along a radial direction of the first rotation axis. One side of the first leg adjacent to the base has an engaging groove. When the first leg is moved away from the base, the first leg is rotatable relative to the base. When the first leg is approached to the base, the first leg is limited to a folded position or an unfolded position. When the first leg is in the folded position, the first side is close to the first stopping flange, and one side of the rear section adjacent to the second side is close to the second stopping flange, and the front end is approached to the main body. When the first leg is in the unfolded position, the engaging groove sleeves on the first stopping flange, and one side of the rear section adjacent to the first side is close to the second stopping flange, and the front end is distal away from the main body. 
     In an embodiment, the base is connected to an axial rod having an outer periphery sleeved by an axial sleeve. The first leg has a pivot hole along an axial direction of the first rotation axis. The floor pump further includes a pivot mechanism. The pivot mechanism includes a biasing member, a cover sleeve, and a pull collar. The biasing member sleeves on the axial sleeve. The cover sleeve inserts into the pivot hole and sleeves on the biasing member. One end of the biasing member along the axial direction of the first rotation axis abuts against the axial sleeve and another end of the biasing member abuts against the cover sleeve. The pull collar is connected to the cover sleeve and located at one side of the first leg opposite to the base. 
     In an embodiment, the side of the first leg opposite to the base has an engaging recess disposed adjacent to the pivot hole. One side of the pull collar adjacent to the first leg has an engaging flange engaged with the engaging recess. The first leg and the pull collar is axially movable along the first rotation axis synchronously. When the first leg is moved away from the base, the first leg and the pull collar is rotatable relative to each other synchronously. 
     In an embodiment, the base further has a positioning flange disposed adjacent to the axial rod. One side of the cover sleeve adjacent to the base has a first positioning recess and a second positioning recess When the first leg is in the folded position, the positioning flange is engaged in the first positioning recess. When the first leg is in the unfolded position, the positioning flange is engaged in the second positioning recess. 
     In an embodiment, the base further has a third stopping flange and a fourth stopping flange. The third stopping flange and the first stopping flange are respectively arranged on two opposite sides of the base and form a symmetrical structure. The fourth stopping flange and the second stopping flange are respectively arranged on the two opposite sides of the base and form a symmetrical structure. The supporting device further includes a second leg. The second leg is pivotally connected to the base and rotatable relative to the base about a second rotation axis, and the second leg is axially movable along the second rotation axis to approach or move away from the base, When the second leg is moved away from the base, the second leg is rotatable relative to the base. When the second leg is approached to the base, the second leg is limited, and the second leg and the first leg are respectively arranged on the two opposite sides of the base and form a symmetrical structure. 
     In an embodiment, the main body has a footrest. The footrest has a connection flange extending in a vertical direction. An outer periphery of the connection flange has a T-shaped cross section in a horizontal direction. The base has a connection groove and is movable in the vertical direction to cause the connection groove to sleeve on the connection flange. An inner periphery of the connection groove has a T-shaped cross section in the horizontal direction. 
     The present invention will become clearer in light of the following detailed description of illustrative embodiments of this invention described in connection with the drawings. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG.  1    is a perspective view of a floor pump of a first embodiment according to the present invention and shows legs arranged in an unfolded position. 
         FIG.  2    is an exploded, perspective view of the floor pump of  FIG.  1   . 
         FIG.  3    is an exploded, perspective view of a supporting device of the floor pump of  FIG.  1   . 
         FIG.  4    is another exploded, perspective view of the supporting device of the floor pump of  FIG.  1   . 
         FIG.  5    is a cross sectional view of the floor pump of  FIG.  1   . 
         FIG.  6    is a continued view of  FIG.  5    and shows the legs moved away from a base. 
         FIG.  7    is a side view of the floor pump of  FIG.  1    and shows the legs arranged in a folded position. 
         FIG.  8    is a cross sectional view of the floor pump of  FIG.  7   . 
         FIG.  9    is a perspective view of the floor pump of the first embodiment and shows legs arranged in the folded position. 
         FIG.  10    is a perspective view of a floor pump of a second embodiment according to the present invention. 
         FIG.  11    is an exploded, perspective view of the floor pump of  FIG.  10   . 
         FIG.  12    is another exploded, perspective view of the floor pump of  FIG.  10   . 
         FIG.  13    is a perspective view of a floor pump of a third embodiment according to the present invention and shows legs arranged in an unfolded position. 
         FIG.  14    is an exploded, perspective view of a supporting device of the floor pump of  FIG.  13   . 
         FIG.  15    is another exploded, perspective view of the supporting device of the floor pump of  FIG.  13   . 
         FIG.  16    is a cross sectional view of the floor pump of  FIG.  13   . 
         FIG.  17    is a continued view of  FIG.  16    and shows the legs moved away from a base. 
         FIG.  18    is a side view of the floor pump of  FIG.  13    and shows the legs arranged in a folded position. 
         FIG.  19    is a cross sectional view of the floor pump of  FIG.  18   . 
         FIG.  20    is a perspective view of the floor pump of the third embodiment and shows legs arranged in the folded position. 
     
    
    
     DETAILED DESCRIPTION 
       FIGS.  1 - 9    show a floor pump  10  of a first embodiment according to the present invention. The floor pump  10  includes a main body  20  and a supporting device  30 . 
     The supporting device  30  includes a base  31  and a first leg  32 . The base  31  is fixed to the main body  20  and has a first stopping flange  311  and a second stopping flange  312 . The first leg  32  is pivotally connected to the base  31  and rotatable relative to the base  31  about a first rotation axis L 1 . The first leg  32  is axially movable along the first rotation axis L 1  to approach or move away from the base  31 . The first leg  32  has a front end  321  and a rear end  322 , and the first leg  32  forms a front section  323  between the front end  321  and the first rotation axis L 1 , and the first leg  32  forms a rear section  324  between the rear end  322  and the first rotation axis L 1 . The first leg  32  has a first side  325  and a second side  326  opposite to the first side  325  on an outer periphery thereof along a radial direction of the first rotation axis L 1 . When the first leg  32  is moved away from the base  31 , the first leg  32  is rotatable relative to the base  31 . When the first leg  32  is approached to the base  31 , the first leg  32  is limited to a folded position or an unfolded position. When the first leg  32  is in the folded position, one side of the front section  323  adjacent to the first side  325  is close to the first stopping flange  311 , and one side of the rear section  324  adjacent to the second side  326  is close to the second stopping flange  312 , and the front end  321  is approached to the main body  20 . When the first leg  32  is in the unfolded position, one side of the front section  323  adjacent to the second side  326  is close to the first stopping flange  311 , and one side of the rear section  324  adjacent to the first side  325  is close to the second stopping flange  312 , and the front end  321  is distal away from the main body  20 . 
     The base  31  is connected to an axial rod  313  having an outer periphery sleeved by an axial sleeve  314 . The first leg  32  has a pivot hole  327  along an axial direction of the first rotation axis L 1 . The floor pump  10  further includes a pivot mechanism  40 , which includes a biasing member  41 , a cover sleeve  42 , and a pull collar  43 . The biasing member  41  sleeves on the axial sleeve  314 . The cover sleeve  42  inserts into the pivot hole  327  and sleeves on the biasing member  41 . One end of the biasing member  41  along the axial direction of the first rotation axis L 1  abuts against the axial sleeve  314  and another end of the biasing member  41  abuts against the cover sleeve  42 . The pull collar  43  is connected to the cover sleeve  42  and located at one side of the first leg  32  opposite to the base  31 . 
     The side of the first leg  32  opposite to the base  31  has an engaging recess  328  disposed adjacent to the pivot hole  327 . One side of the pull collar  43  adjacent to the first leg  32  has an engaging flange  431  engaged with the engaging recess  328 . The first leg  32  and the pull collar  43  is axially movable along the first rotation axis L 1  synchronously. When the first leg  32  is moved away from the base  31 , the first leg  32  and the pull collar  43  is rotatable relative to each other synchronously. The base  31  further has a third stopping flange  315  and a fourth stopping flange  316 . The third stopping flange  315  and the first stopping flange  311  are respectively disposed on opposite sides of the base  31  and form a symmetrical structure. The fourth stopping flange  316  and the second stopping flange  312  are respectively disposed on opposite sides of the base  31  and form a symmetrical structure. The supporting device  30  further includes a second leg  33 , which the is pivotally connected to the base  31  and rotatable relative to the base  31  about a second rotation axis L 2 . The second leg  33  is axially movable along the second rotation axis L 2  to approach or move away from the base  31 . When the second leg  33  is moved away from the base  31 , the second leg  33  is rotatable relative to the base  31 . When the second leg  33  is approached to the base  31 , the second leg  33  is limited, and the second leg  33  and the first leg  32  are respectively arranged on two opposite sides of the base  31  and form a symmetrical structure. 
     The main body  20  has a footrest  21 , which has a connection flange  211  extending in a vertical direction. An outer periphery of the connection flange  211  has a T-shaped cross section in a horizontal direction. The base  31  has a connection groove  317  and is movable in the vertical direction to cause the connection groove  317  to sleeve on the connection flange  211 . An inner periphery of the connection groove  317  has a T-shaped cross section in the horizontal direction. 
     Thus, the floor pump  10  can provide stable and high-strength support when the legs  32  and  33  are in the unfolded position, and does not need to precisely align the concave-convex matching structure when folded, thereby improving the convenience of folding. 
       FIGS.  10 - 12    show a floor pump  10   a  of a second embodiment according to the present invention. The second embedment is substantially the same as the first embodiment. The main differences are that the base  31   a  has a first limiting flange  318   a . When the first leg  32   a  is in the folded position, the first leg  32   a  is limited between the first stopping flange  311   a  and the first limiting flange  318   a . When the first leg  32   a  is in the unfolded position, the first leg  32   a  is limited between the first limiting flange  318   a  and the second stopping flange  312   a . 
     The base  31   a  further has a third stopping flange  315   a , a fourth stopping flange  316   a , and a second limiting flange  319   a . The third stopping flange  315   a  and the first stopping flange  311   a  are respectively arranged on two opposite sides of the base  31   a  and form a symmetrical structure. 
     The fourth stopping flange  316   a  and the second stopping flange  312   a  are respectively arranged on the two opposite sides of the base  31   a  and form a symmetrical structure. The second limiting flange  319   a  and the first limiting flange  318   a  are respectively arranged on the two opposite sides of the base  31   a  and form a symmetrical structure. The supporting device  30   a  further includes a second leg  33   a , which is pivotally connected to the base  31   a  and rotatable relative to the base  31   a  about a second rotation axis L 2 , and the second leg  33   a  is axially movable along the second rotation axis L 2   to approach or move away from the base  31   a . When the second leg  33   a  is moved away from the base  31   a , the second leg  33   a  is rotatable relative to the base  31   a . When the second leg  33   a  is approached to the base  31   a , the second leg  33   a  is limited, and the second leg  33   a  and the first leg  32   a  are respectively arranged on the two opposite sides of the base  31   a  and form a symmetrical structure. 
       FIGS.  13 - 20    show a floor pump  10   b  of a third embodiment according to the present invention. The third embedment is substantially the same as the first embodiment. The main differences are that the floor pump  10   b  includes a main body  20   b  and a supporting device  30   b . 
     The supporting device  30   b  including a base  31   b  and a first leg  32   b . The base  31   b  is fixed to the main body  20   b  and has a first stopping flange  311   b  and a second stopping flange  312   b . The first leg  32   b  is pivotally connected to the base  31   b  and rotatable relative to the base  31   b  about a first rotation axis L 1 , and the first leg  32   b  is axially movable along the first rotation axis L 1  to approach or move away from the base  31   b . The first leg  32   b  has a front end  321   b  and a rear end  322   b . The first leg  32   b  forms a front section  323   b  between the front end  321   b  and the first rotation axis L 1 , and the first leg  32   b  forms a rear section  324   b  between the rear end  322   b  and the first rotation axis L 1 . The first leg  32   b  has a first side  325   b  and a second side  326   b  opposite to the first side  325   b  on an outer periphery thereof along a radial direction of the first rotation axis L 1 . One side of the first leg  32   b  adjacent to the base  31   b  has an engaging groove  329   b . When the first leg  32   b  is moved away from the base  31   b , the first leg  32   b  is rotatable relative to the base  31   b . When the first leg  32   b  is approached to the base  31   b , the first leg  32   b  is limited to a folded position or an unfolded position. When the first leg  32   b  is in the folded position, the first side  325   b  is close to the first stopping flange  311   b , and one side of the rear section  324   b  adjacent to the second side  326   b  is close to the second stopping flange  312   b , and the front end  321   b  is approached to the main body  20   b . When the first leg  32   b  is in the unfolded position, the engaging groove  329   b  sleeves on the first stopping flange  311   b , and one side of the rear section  324   b  adjacent to the first side  325   b  is close to the second stopping flange  312   b , and the front end  321   b  is distal away from the main body  20   b . 
     The base  31   b  is connected to an axial rod  313   b  having an outer periphery sleeved by an axial sleeve  314   b . The first leg  32   b  has a pivot hole  327   b  along an axial direction of the first rotation axis L 1 . The floor pump  10   b  further includes a pivot mechanism  40   b . The pivot mechanism  40   b  includes a biasing member  41   b , a cover sleeve  42   b , and a pull collar  43   b . The biasing member  41   b  sleeves on the axial sleeve  314   b . The cover sleeve  42   b  inserts into the pivot hole  327   b  and sleeves on the biasing member  41   b . One end of the biasing member  41   b  along the axial direction of the first rotation axis L 1  abuts against the axial sleeve  314   b  and another end of the biasing member  41   b  abuts against the cover sleeve  42   b . The pull collar  43   b  is connected to the cover sleeve  42   b  and located at one side of the first leg  32   b  opposite to the base  31   b . 
     The side of the first leg  32   b  opposite to the base  31   b  has an engaging recess  328   b  disposed adjacent to the pivot hole  327   b . One side of the pull collar  43   b  adjacent to the first leg  32   b  has an engaging flange  431   b  engaged with the engaging recess  328   b . The first leg  32   b  and the pull collar  43   b  is axially movable along the first rotation axis L 1  synchronously. When the first leg  32   b  is moved away from the base  31   b , the first leg  32   b  and the pull collar  43   b  is rotatable relative to each other synchronously. 
     The base  31   b  further has a positioning flange  310   b  disposed adjacent to the axial rod  313   b . One side of the cover sleeve  42   b  adjacent to the base  31   b  has a first positioning recess  421   b  and a second positioning recess  422   b . When the first leg  32   b  is in the folded position, the positioning flange  310   b  is engaged in the first positioning recess  421   b . When the first leg  32   b  is in the unfolded position, the positioning flange  310   b  is engaged in the second positioning recess  422   b . 
     The base  31   b  further has a third stopping flange  315   b  and a fourth stopping flange  316   b . The third stopping flange  315   b  and the first stopping flange  311   b  are respectively arranged on two opposite sides of the base  31   b  and form a symmetrical structure. The fourth stopping flange  316   b  and the second stopping flange  312   b  are respectively arranged on the two opposite sides of the base  31   b  and form a symmetrical structure. The supporting device  30   b  further includes a second leg  33   b . The second leg  33   b  is pivotally connected to the base  31   b  and rotatable relative to the base  31   b  about a second rotation axis L 2 , and the second leg  33   b  is axially movable along the second rotation axis L 2  to approach or move away from the base  31   b . When the second leg  33   b  is moved away from the base  31   b , the second leg  33   b  is rotatable relative to the base  31   b . When the second leg  33   b  is approached to the base  31   b , the second leg  33   b  is limited, and the second leg  33   b  and the first leg  32   b  are respectively arranged on the two opposite sides of the base  31   b  and form a symmetrical structure. 
     The main body  20   b  has a footrest  21   b . The footrest  21   b  has a connection flange  211   b  extending in a vertical direction. An outer periphery of the connection flange  211   b  has a T-shaped cross section in a horizontal direction. The base  31   b  has a connection groove  317   b  and is movable in the vertical direction to cause the connection groove  317   b  to sleeve on the connection flange  211   b . An inner periphery of the connection groove  317   b  has a T-shaped cross section in the horizontal direction. 
     Although specific embodiments have been illustrated and described, numerous modifications and variations are still possible without departing from the scope of the invention. The scope of the invention is limited by the accompanying claims.