Air-pressure massaging device having an automatic adjustment function

1. An air-pressure massaging device having an automatic adjustment function comprising:

a base, inside which being disposed a drive rod;

two fixed massaging assemblies mounted onto both ends of the drive rod;

two adjustable massaging assemblies moveably mounted onto the drive rod and located between the two fixed massaging assemblies;

an airbag disposed in the base and serving to move the adjustable massaging assemblies relative to the fixed massaging assemblies;

through inflation and deflation of the airbag, the adjustable massaging assemblies will be caused to move relative to the fixed massaging assemblies, so that a distance between the fixed massaging assemblies and the adjustable massaging assemblies is adjusted.

2. The air-pressure massaging device having an automatic adjustment function as claimed in claim 1 , wherein a frame is disposed in the base and provided for transversely and pivotally positioning the drive rod.

3. The air-pressure massaging device having an automatic adjustment function as claimed in claim 2 , wherein a dynamic unit is fixed on the frame and used to rotate the drive rod.

4. The air-pressure massaging device having an automatic adjustment function as claimed in claim 2 , wherein a stop member is provided on the frame of the base, and a positioning portion is formed on a housing of the respective adjustable massaging assemblies and employed to be locked with the stop member of the frame, so that the housing of the adjustable massaging assemblies is unable to rotate together with the drive rod.

5. The air-pressure massaging device having an automatic adjustment function as claimed in claim 2 , wherein a fixing board is disposed at either end of an inner space of the frame in the base, and at a side of the fixing board is disposed the airbag which faces toward the adjustable massaging assembly, the airbag is inflated to push the adjustable massing assemblies to move relative to the fixed massaging assemblies along the axial direction of the drive rod.

6. The air-pressure massaging device having an automatic adjustment function as claimed in claim 1 , wherein the two fixed massaging assemblies are disposed at both ends of the drive rod, and the two adjustable massaging assemblies are mounted on the drive rod and located between the two fixed massaging assemblies, the airbag is located in the base, and the two adjustable massaging assemblies are disposed at both sides of the airbag.

7. The air-pressure massaging device having an automatic adjustment function as claimed in claim 6 , wherein each of the fixed massaging assemblies comprises a ring seat, a connecting ring, a ring, a press ring and a limit ring, the ring seat is fixed on the drive rod and is provided with a slant projection, the ring is positioned on the slant projection of the ring seat, the ring is provided with a plurality of ear portions in each of which is disposed a ball, the connecting ring is mutually locked with the press ring and the limit ring and is positioned on the balls in the ear portions of the ring, so that the connecting ring, the press ring and the limit ring are rotatably and slantwise arranged relative to the ring seat of the fixed massaging assembly.

8. The air-pressure massaging device having an automatic adjustment function as claimed in claim 7 , wherein each of the adjustable massaging assemblies comprises a housing, a movable ring seat, a connecting ring, a press ring, a ring and a limit ring, the housing of the adjustable massaging assembly is axially provided with a through hole through which the housing of the adjustable massaging assembly is moveably mounted onto the drive rod, the housings of the respective adjustable massaging assemblies are located correspondingly to each other and define a receiving space therebetween, the moveable ring seat is axially provided with a through hole through which the moveable ring seat is moveably mounted onto the drive rod, the ring of the adjustable massaging assembly is positioned on a slant projection of the moveable ring seat and is provided with a plurality of ear portions in each of which is received a ball, the connecting ring of the adjustable massaging assembly is locked with the press ring and the limit ring thereof and is positioned on the balls in the ear portions of the ring of the adjustable massaging assembly so that the connecting ring, the press ring and the limit ring are rotatably and slantwise arranged relative to the ring seat of the adjustable massaging assembly.

9. The air-pressure massaging device having an automatic adjustment function as claimed in claim 8 , wherein each of the adjustable massaging assemblies is provided at its end facing the fixed massaging assemblies with a plurality of massaging projections.

10. The air-pressure massaging device having an automatic adjustment function as claimed in claim 8 , wherein the ring seat of the respective adjustable massaging assemblies is provided at its end facing the fixed massaging assemblies with a slant surface.

11. The air-pressure massaging device having an automatic adjustment function as claimed in claim 8 , wherein a plurality of cavities are annularly arranged on an end surface of the housing, an annular groove is correspondingly formed on end surface of the moveable ring seat, a plurality balls are received in the cavities and the annular groove, so that the moveable ring seat is able to rotate relative to the housing.

12. The air-pressure massaging device having an automatic adjustment function as claimed in claim 8 , wherein a massaging wheel assembly is disposed between each pair of the fixed massaging assembly and the adjustable massaging assembly, and includes a sleeve, an assembling pipe and a return element, a connecting column is formed on the slant projection of the moveable ring seat of the respective adjustable massaging assemblies, the sleeve is mounted to the drive rod and engaged with the connecting column of the moveable ring seat, on the slant projection of the ring seat of the fixed massaging assemblies is also provided a connecting column, the assembling sleeve is mounted to the drive rod and engaged with the connecting column of the fixed ring seat, on a periphery of the assembling pipe are provided a plurality of massaging rollers, another end of the assembling pipe extends into an annular step groove of the sleeve, at this another end of the assembling pipe is formed an annular receiving groove, the return element is disposed in the annular receiving groove of the assembling pipe and biased between a bottom of the annular receiving groove and an edge of the annular step groove of the sleeve.

13. The air-pressure massaging device having an automatic adjustment function as claimed in claim 12 , wherein an annular flange is formed on the periphery of the assembling pipe of the massaging wheel assembly.

14. The air-pressure massaging device having an automatic adjustment function as claimed in claim 7 , wherein each of the fixed massaging assemblies is provided at its end facing the adjustable massaging assemblies with a plurality of massaging projections.

15. The air-pressure massaging device having an automatic adjustment function as claimed in claim 7 , wherein the ring seat of the respective fixed massaging assemblies is provided at its end facing the adjustable massaging assemblies with a slant surface.

16. The air-pressure massaging device having an automatic adjustment function as claimed in claim 7 , wherein a massaging wheel assembly is disposed between each pair of the fixed massaging assembly and the adjustable massaging assembly, and includes a sleeve, an assembling pipe and a return element, a connecting column is formed on the slant projection of the moveable ring seat of the respective adjustable massaging assemblies, the sleeve is mounted to the drive rod and engaged with the connecting column of the moveable ring seat, on the slant projection of the ring seat of the fixed massaging assemblies is also provided a connecting column, the assembling sleeve is mounted to the drive rod and engaged with the connecting column of the fixed ring seat, on a periphery of the assembling pipe are provided a plurality of massaging rollers, another end of the assembling pipe extends into an annular step groove of the sleeve, at this another end of the assembling pipe is formed an annular receiving groove, the return element is disposed in the annular receiving groove of the assembling pipe and biased between a bottom of the annular receiving groove and an edge of the annular step groove of the sleeve.

17. The air-pressure massaging device having an automatic adjustment function as claimed in claim 16 , wherein an annular flange is formed on the periphery of the assembling pipe of the massaging wheel assembly.

18. The air-pressure massaging device having an automatic adjustment function as claimed in claim 6 , wherein each of the adjustable massaging assemblies comprises a housing, a movable ring seat, a connecting ring, a press ring, a ring and a limit ring, the housing of the adjustable massaging assembly is axially provided with a through hole through which the housing of the adjustable massaging assembly is moveably mounted onto the drive rod, the housings of the respective adjustable massaging assemblies are located correspondingly to each other and define a receiving space therebetween, the moveable ring seat is axially provided with a through hole through which the moveable ring seat is moveably mounted onto the drive rod, the ring of the adjustable massaging assembly is positioned on a slant projection of the moveable ring seat and is provided with a plurality of ear portions in each of which is received a ball, the connecting ring of the adjustable massaging assembly is locked with the press ring and the limit ring thereof and is positioned on the balls in the ear portions of the ring of the adjustable massaging assembly so that the connecting ring, the press ring and the limit ring are rotatably and slantwise arranged relative to the ring seat of the adjustable massaging assembly.

19. The air-pressure massaging device having an automatic adjustment function as claimed in claim 18 , wherein each of the adjustable massaging assemblies is provided at its end facing the fixed massaging assemblies with a plurality of massaging projections.

20. The air-pressure massaging device having an automatic adjustment function as claimed in claim 18 , wherein the ring seat of the respective adjustable massaging assemblies is provided at its end facing the fixed massaging assemblies with a slant surface.

21. The air-pressure massaging device having an automatic adjustment function as claimed in claim 18 , wherein a plurality of cavities are annularly arranged on an end surface of the housing, an annular groove is correspondingly formed on end surface of the moveable ring seat, a plurality balls are received in the cavities and the annular groove, so that the moveable ring seat is able to rotate relative to the housing.

22. The air-pressure massaging device having an automatic adjustment function as claimed in claim 18 , wherein a massaging wheel assembly is disposed between each pair of the fixed massaging assembly and the adjustable massaging assembly, and includes a sleeve, an assembling pipe and a return element, a connecting column is formed on the slant projection of the moveable ring seat of the respective adjustable massaging assemblies, the sleeve is mounted to the drive rod and engaged with the connecting column of the moveable ring seat, on the slant projection of the ring seat of the fixed massaging assemblies is also provided a connecting column, the assembling sleeve is mounted to the drive rod and engaged with the connecting column of the fixed ring seat, on a periphery of the assembling pipe are provided a plurality of massaging rollers, another end of the assembling pipe extends into an annular step groove of the sleeve, at this another end of the assembling pipe is formed an annular receiving groove, the return element is disposed in the annular receiving groove of the assembling pipe and biased between a bottom of the annular receiving groove and an edge of the annular step groove of the sleeve.

23. The air-pressure massaging device having an automatic adjustment function as claimed in claim 22 , wherein an annular flange is formed on the periphery of the assembling pipe of the massaging wheel assembly.

24. The air-pressure massaging device having an automatic adjustment function as claimed in claim 1 , wherein the airbag is inflated and deflated by an air pump.

25. The air-pressure massaging device having an automatic adjustment function as claimed in claim 24 , wherein the air pump uses central processing unit to control inflation and deflation time of the airbag.

26. The air-pressure massaging device having an automatic adjustment function as claimed in claim 1 , wherein the airbag is inflated and deflated manually by pressing a balloon.