Abstract:
According to a conventional hydraulic-pump-type barber or beauty chair having legs which spread out, radiately and in parallel to a floor surface, from the lower part of a pump, a seat part itself is large and heavy, which results in a high center of gravity. Thus, the chair can quite possibly turn over while it is moved. Further, the legs are arranged at the lower position on the floor surface and are arranged in parallel to the floor surface, resulting in a difficult cleaning under the legs. The present invention is provided with a ring-shaped bracket for fixing the legs with sandwiching the upper part of the hydraulic pump, the upper bracket, and the cylinder part, one another, thereby realizing a design, wherein the legs are radiately arranged therefrom.

Description:
FIELD OF THE INVENTION  
         [0001]    The present invention relates to a leg part for a barber or beauty chair, in which one end of each leg can be placed to upper part of a pump body.  
         BACKGROUND OF THE INVENTION  
         [0002]    Conventionally, according to a hydraulic-pump-type barber or beauty chair employed in a barber shop or a beauty salon, when legs are placed, the legs are tightened to a lower bracket part of a body with directing from the lower part to the upper part by a bolt-shaped fixed shaft, to fix the legs to the pump body as illustrated in FIG. 9. As illustrated in FIG. 8, the legs are arranged from the lower part of the pump, which results in a spread-out state.  
           [0003]    According to conventional hydraulic-pump-type barber or beauty chairs employed in a barber shop or a beauty salon, most of them have legs which spread out, radiately and almost in parallel to a floor surface, from the lower part of the pump, which results in that the design is similar to each other. Further, according to a barber or beauty chair, since a seat part itself is typically large and heavy, a center of gravity is located in a high position. Thus, according to conventional legs in a downwardly-spread-out state, the chair can quite possibly turn over while the chair is moved. Further, the legs are arranged almost in parallel to the floor surface and also are arranged at a position in a close-spaced relationship to the floor surface, whereby it is difficult to clean under the leg part.  
         SUMMARY OF THE INVENTION  
         [0004]    To solve the above problems, according to a first aspect of the present invention, a leg part for a barber or beauty chair comprises a pump body having a hydraulic pump mechanism, legs placed at the upper part of the pump body, a crank for driving the hydraulic pump, and a ram shaft to be a column which moves upwardly and downwardly by a force of the hydraulic pump, said leg part comprising: said pump body, the side face of which is covered by a cylinder part, the bottom of which is covered by a lower bracket, and the upper part of which is covered by an upper bracket, and which has a ring-shaped bracket which is fixed with sandwiched between the upper bracket and the cylinder part to the upper part circumferential portion of the cylinder part; a fixed shaft passing downwardly through an opening provided in the upper bracket, to be screwed into the lower bracket, thereby fixing the pump body with sandwiching the upper bracket, the lower bracket, the ring-shaped bracket, and the cylinder part, one another; said crank for driving the hydraulic pump by a rocking motion in the upward and downward directions at one end of the crank placed at the upper bracket on a fulcrum of the other end; said ram shaft, one end of which is placed within the pump body, and which moves upwardly and downwardly in the direction perpendicular to a floor surface by a force of the hydraulic pump; and plural legs, one end of each leg being placed at the outer circumferential portion of the ring-shaped bracket, and the other end of each leg touching the floor surface.  
           [0005]    According to this structure, it is possible to arrange the legs from the upper part of the pump body, which enables to allow large latitude in the conventionally standardized design. Further, the legs are arranged from a position near the center of the gravity, which enables to obtain a structure, wherein the chair is hard to be turned over. Further, a space from the floor surface to the legs is widely open, thereby easily cleaning under the leg part. 
       
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
       [0006]    [0006]FIG. 1 is a perspective view  1  illustrating a leg part for a barber or beauty chair according to the present invention.  
         [0007]    [0007]FIG. 2 is a perspective view  2  illustrating a leg part for a barber or beauty chair according to the present invention.  
         [0008]    [0008]FIG. 3 is a schematic view illustrating a cross section of the upper part of a pump body.  
         [0009]    [0009]FIG. 4 is a sectional side view illustrating a pump body.  
         [0010]    FIGS.  5  ( a ) and ( b ) are a top view and a side elevation view illustrating an upper bracket, respectively.  
         [0011]    FIGS.  6  ( a ) and ( b ) are a cross sectional view and a side elevation view illustrating an upper bracket, respectively.  
         [0012]    FIGS.  7  ( a ), ( b ), ( c ), and ( d ) are a top view, a side elevation view, a cross sectional view illustrating a lower bracket, and a side elevation view illustrating an oil suction part, respectively.  
         [0013]    FIGS.  8 ( a ), ( b ), ( c ), and ( d ) are side elevation views illustrating a leg part according to a prior art barber or beauty chair.  
         [0014]    [0014]FIG. 9 is a cross section view illustrating a leg part according to a prior art barber or beauty chair. 
     
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS  
     Embodiment 1  
       [0015]    Hereinafter, a first embodiment of an invention according to claim 1 of the present invention will be described with referring to FIGS.  1  to  7 .  
         [0016]    In FIGS. 1, 2, and  3 , reference numeral  5  designates a cylindrical pump body. Numeral  1  designates a ram shaft, one end of which is arranged within the pump body, and the other end of which is connected to a not-shown seat part, and which moves upwardly and downwardly by a force of the pump. Numeral  2  designates a crank for applying a force to the pump by a rocking motion. Numeral  301  designates a crank support part for connecting the crank  2  placed at the upper bracket  3  on a rock-able condition, the upper bracket  3  which is connected to the pump body at the upper part, to construct the upper part of the pump. Numeral  8  designates a piston cover for protecting the top part of the pump body. Numeral  4  designates a ring-shaped bracket fixed with sandwiched between the upper part circumferential portion of the pump body  5  and the upper bracket  3  by bolts as illustrated in FIG. 3. Numeral  6  designates five legs, one end of each leg being fastened to the ring-shaped bracket  4 , to spread out radiately in the outward direction, and the other end of each leg contacting with the floor surface, whereby holding the entire barber or beauty chair. Numeral  7  designates a lower bracket, which is connected to the bottom part of the pump body  5 , to construct the bottom part of the pump body.  
         [0017]    As shown in FIG. 4, the ram shaft  1  has a rubber bottom  101  at one end thereof, a ram shaft vertical oil path  102  passing the rubber bottom through the center of the bottom part, and a ram shaft horizontal oil path  103  from the side to the ram shaft vertical oil path  102 . The upper bracket  3 , as shown in FIGS. 5 and 6, has the crank support part, upper bracket junction parts  302   a  and  302   b  for fixing the upper bracket by the bolts, an annular concave recess  304  for exhausting hydraulic oil, which is overly injected by a pressurization, an oil exhausting path  307 , an oil exhausting opening  308 , a piston rod opening  305 , through which the piston rod passes upwardly and downwardly, and a ram shaft opening  306 , through which the ram shaft  1  passes upwardly and downwardly. Further, the upper bracket junction parts  302   a  and  302   b  are provided to pass a fixed shaft  9  for connecting to the pump body. The lower bracket  7  has a ram shaft bottom opening  701  which touches a bottom part of the rubber bottom  101  provided at one end of the ram shaft  1 , a piston bottom opening  702 , into which a valve receiver  707  is fitted and at the bottom of which a piston valve part  706  employing a steel ball and a spring is provided, and further an oil suction opening  703  having an oil suction orifice  709 , at the bottom of which an oil suction valve  710  for flowing hydraulic oil only in one direction is provided, and wherein the valve receiver  707  and the oil suction orifice  709  are connected to each other by an oil suction path  708 , as illustrated in FIG. 7. Further, lower bracket junction parts  704   a  and  704   b  for connecting by the fixed shaft  9  are provided. Further, as illustrated in FIG. 3, the fixed shaft  9  passes inside the pump body from the downward to the upward with passing the upper bracket through the upper bracket junction parts  302   a  and  302   b , and which is screwed into the lower bracket junction part like a bolt, whereby the upper bracket, the ring-shaped bracket, a cylinder part, and the lower bracket are connected and fixed to one another.  
         [0018]    A structure of the pump body  5  will be described with referring to FIG. 4. The pump body  5 , the side of which is covered by a cylinder part  501 , which is connected to the upper bracket  3  with covering the top part by cylinder part junction parts  501   a  and  501   b , and which is connected to the lower bracket  7  with covering the bottom part by cylinder part junction parts  501   c  and  501   d . The ram shaft  1  passes through the ram shaft opening  306  provided in the upper bracket, and the rubber bottom provided at one end of the ram shaft  1  reaches the ram shaft bottom opening provided in the lower bracket. A joint pipe  510  is provided with covering the side of the ram shaft from the upper bracket to the lower bracket, one end of which is connected to the upper bracket  3  by joint pipe junction parts  511   a  and  511   b , and the other end of which is connected to the lower bracket by joint pipe junction parts  511   c  and  511   d . A piston rod  502  is provided with passing the upper bracket through a piston rod opening  305  provided in the upper bracket  3 . A stud valve  503  is provided at one end of the piston rod  502  within the pump body  5 . Further, a piston projection part  506  is provided at the center of the bottom face of the stud valve. A rod boss  505  is provided with covering the side of the stud valve  503  at the lower part of the stud valve  503 , and a piston spring  504  is provided around the stud valve from the top end of the rod boss to the top end of the stud valve, whereby pushing up the stud valve so that the piston is usually placed at the highest place. The rod boss  505 , the lower part of which is fitted into the valve receiver  707 , and the valve receiver  707  is fitted into the piston bottom opening  702  provided in the lower bracket  7 , and a valve  507  is provided at the lower inside of the valve receiver  707 . The valve  507  is connected to the lower bracket by the valve junction parts  507   a  and  507   b . The valve  507  has an opening at the center, which touches the bottom part of the piston bottom opening  702 , and a pressurized oil valve  508  employing a steel ball and a spring in the opening. The valve  507  is usually in the closed condition. The oil suction orifice  709  is fitted into the oil suction valve  703 . The oil suction valve  710  is provided at the bottom part of the oil suction orifice  709 . An oil suction opening  509  is provided at the side face of the rod boss  505  of the upper part of the valve  507 , and which is connected to the oil suction path. Further, the pump body  5  is filled with hydraulic oil in the space.  
         [0019]    Next, an operation of the leg part for a barber or beauty chair according to the present embodiment  1  is described.  
         [0020]    Usually, the crank of the leg part for a barber or beauty chair is hold at the almost horizontal position as illustrated in FIG. 1. The piston rod  502  and the stud valve  503  are hold at the highest position as illustrated in FIG. 4. Further, with reference to the ram shaft, the rubber bottom  101  of which is placed at the lowest position, which touches the ram shaft bottom opening  701  provided in the lower bracket  7 .  
         [0021]    In this state, one end  2   a  of the crank is stamped down, which results in that the crank  2  is obliquely lowered on a fulcrum of the crank support part  301 , whereby pushing the piston rod  502  down by a not-shown crank lever in the piston cover  8 . With this pushing down, the ram shaft  1  is pushed up by a predetermined height by a force of a hydraulic pump, whereby a not-shown chair mounted on the upper part of the ram shaft  1  is pushed up. Subsequently, the crank  2  is returned to the original horizontal position, which results in that the piston rod  502  is returned to the original highest position, and that the ram shaft is maintained at the pushed up position by a predetermined height.  
         [0022]    The above operations are repeated, whereby adjusting the chair connected to the upper part of the ram shaft  1  to a suitable height.  
         [0023]    Next, an operation in the pump body  5  will be described.  
         [0024]    The piston rod  502  is pushed down by the crank lever, which results in pushing down the stud valve  503 , to pressurize hydraulic oil in the rod boss  505 . Subsequently, the crank  2  is pushed down, which results in that the piston projection part  506  provided at the lower part of the stud valve  503  pushes down the steel ball in the pressurized oil valve  508 , to open the pressurized oil valve  508 , whereby the pressurized hydraulic oil passes from the valve  507  through the pressurized oil path  705 , to flow into the joint pipe  510 . The hydraulic oil flowing into the joint pipe  510  passes from the ram shaft horizontal oil path  103  through the ram shaft vertical oil path  102 , to flow into the lower part of the rubber bottom  101 . The rubber bottom  101  and the ram shaft  1  are pushed up by the pressure of the hydraulic oil flowing under the rubber bottom  101 .  
         [0025]    When the force for stamping down the pushed down crank  2  is reduced, the crank  2  is returned to the original horizontal position, whereby the stud valve  503 , the piston rod  502 , and the piston projecting part  506  are pushed up by the force of the piston spring  504 , and the crank  2  is returned to the original position with pushed by the piston rod. Further, when the pressurized oil valve  508  which is pushed down by the piston projection part  506  is returned to the original position, an inverse flowing of the hydraulic oil from the inside of the joint pipe is prevented, whereby the ram shaft  1  is hold at the raised position by a predetermined height. With this rising of the stud valve  503 , the hydraulic oil passes from the oil suction orifice  709  through the oil suction valve  710  and oil suction path  708 , to flow into the rod boss  505  from the oil suction opening  509  provided at the lower part of the rod boss  505 . The oil suction valve  710  is a valve for limiting a flowing of the hydraulic oil to a one-way flowing in a direction of the oil suction orifice  709  side to the oil suction path  708 . The above operations are repeated, thereby to push the ram shaft to a suitable height.  
         [0026]    Further, when the ram shaft  1  rises until the ram shaft horizontal oil path  103  reaches the annular concave recess  304 , the hydraulic oil in the joint pipe  501  flows into the annular concave recess  304  passing through the ram shaft vertical oil path  102  and the ram shaft horizontal oil path  103 , and is exhausted into the pipe body  5  from the oil exhausting opening  308  passing through the oil exhausting path  307 , whereby the ram shaft is prevented from rising further.  
         [0027]    As described above, according to the leg part for a barber or beauty chair of the embodiment 1, the legs can be arranged at the upper part of the pump body without changing any operations of a conventional barber or beauty chair employing a hydraulic pump, whereby largely extending the conventionally standardized design for the legs. Further, the legs are spaced apart from the floor surface, which results in an easy cleaning under the legs. Further, even when a chair, whose center of gravity is high, is employed, the legs are placed at higher position positions, which results in that the legs are arranged near the center of gravity. Therefore, a danger of a turn-over can be prevented.