Air pressure massager

An air pressure massager, which comprises a cylinder, a piston vertically reciprocating inside the cylinder, a main hose connected to the cylinder so as to be a passage for supplying and recovering air by the vertical reciprocation of the piston, a valve connected to the main hose so as to supply and cut off air pressure, an air bag connected to the valve so as to perform an acupressure function by using transferred air pressure, and a driving part for providing rotational power, comprising:

• a rotary shaft coupled to the driving part;
• a first eccentric cam coupled to the rotary shaft;
• a first press bar the upper end portion of which comes into contact with the lower end portion of the first eccentric cam and the lower end portion of which is coupled to the upper end portion of the piston;
• a second eccentric cam coupled to the rotary shaft;
• a second press bar the lower end portion of which comes into contact with the upper end portion of the second eccentric cam;
• a link for connecting the first press bar and the second press bar, and
• Wherein the air pressure massager comprises a circular container coupled to the rotary shaft and having a bar on both surfaces thereof, a circular disc cam alternately rotating left and right by the rotation of the circular container, a valve piston which is opened when the valve piston moves over a hole of the valve cylinder and blocks air when the valve piston is inserted into the hole of the valve cylinder, by the rotation of the circular disc cam, a hose for connecting the hole of the valve piston and the cylinder such that air in the cylinder passes, and a noise prevention valve which is opened right before the valve piston moves upward and closed right before the piston moves downward, and
• wherein when the first press bar moves downward by the eccentric rotation of the first eccentric cam, the second press bar connected to the first press bar by the link also moves downward, and when the second press bar moves upward by the eccentric rotation of the second eccentric cam, the first press bar connected to the second press bar by the link also moves upward.

An air pressure massager, which comprises a cylinder, a piston vertically reciprocating inside the cylinder, a main hose connected to the cylinder so as to be a passage for supplying and recovering air by the vertical reciprocation of the piston, a valve connected to the main hose so as to supply and cut off air pressure, an air bag connected to the valve so as to perform an acupressure function by using transferred air pressure, and a driving part for providing rotational power, comprising:

• a rotary shaft coupled to the driving part;
• a grooved cam coupled to the rotary shaft and having a groove corresponding to a curved outline of the cam on the flat surface of one side thereof;
• and
• a press bar for a grooved cam whose lower end portion is coupled to the upper end portion of the piston and which vertically reciprocates by means of changes in the height of the groove of the grooved cam according to the rotation of the grooved cam by inserting a bearing protruding from the upper end portion of the press bar for a grooved cam in the lateral direction thereof into the groove of the grooved cam.

An air pressure massager, which comprises a cylinder, a piston vertically reciprocating inside the cylinder, a main hose connected to the cylinder so as to be a passage for supplying and recovering air by the vertical reciprocation of the piston, a valve connected to the main hose so as to supply and cut off air pressure, an air bag connected to the valve so as to perform an acupressure function by using transferred air pressure, and a driving part for providing rotational power, comprising:

• a rotary shaft coupled to the driving par;
• a pinion coupled to the rotary shaft;
• a cylindrical grooved cam configured as a cylinder-shaped member having flat upper and lower surfaces, having saw teeth which are formed along the edge of the upper surface thereof and engaged with the pinion, and having a groove which is formed and gives a turn along a curved surface on the lateral surface of the cylindrical grooved cam and whose height is continuously changed;
• and
• a press bar for a cylindrical grooved cam whose lower end portion is coupled to the upper end portion of the piston and which vertically reciprocates by means of changes in the height of the groove of the cylindrical grooved cam according to the rotation of the cylindrical grooved cam by inserting a bearing protruding from the upper end portion of the press bar for a cylindrical grooved cam in the lateral direction thereof into the groove of the cylindrical grooved cam.

An air pressure massager, which comprises a cylinder, a piston vertically reciprocating inside the cylinder, a main hose connected to the cylinder so as to be a passage for supplying and recovering air by the vertical reciprocation of the piston, a valve connected to the main hose so as to supply and cut off air pressure, an air bag connected to the valve so as to perform an acupressure function by using the transferred air pressure, and a driving part for providing rotational power, comprising:

• a rotary shaft coupled to the driving part;
• an eccentric cam coupled to the rotary shaft;
• a press bar the upper end portion of which comes into contact with the lower end portion of the eccentric cam and the lower end portion of which is coupled to the upper end portion of the piston;
• a spring box provided at the lower end of the center of the cylinder;
• and
• a return spring built into the spring box and applying pushing force so as to move the piston upward when compressed.

An air pressure massager, which comprises a cylinder, a piston vertically reciprocating inside the cylinder, a main hose connected to the cylinder so as to be a passage for supplying and recovering air by the vertical reciprocation of the piston, a valve connected to the main hose so as to supply and cut off air pressure, an air bag connected to the valve so as to perform an acupressure function by using transferred air pressure, and a driving part for providing rotational power, further comprising:

• a rotary shaft coupled to the driving part;
• an eccentric cam and a valve cam coupled to the rotary shaft;
• a press bar the upper end portion of which comes into contact with the lower end portion of the eccentric cam and the lower end portion of which is screw-coupled to the upper end portion of the piston;
• and
• a valve opened when the piston moves upward and closed when the piston moves downward, by the rotation of the valve cam, which is coupled to the rotary shaft, and a return spring, which is installed in a spring box provided at the lower end of the cylinder and applies pushing force so as to move the piston upward when the return spring is compressed.