Abstract:
A mattress adjusting system includes at least two airbag sets disposed in the mattress which overlap to each other, at least one air pump for supplying air to a main air tube, each airbag set being connected with the main air tube via a branch air tube, and a control valve disposed in each branch air tube for turning on/off the branch air tube, said air pump and control valves are manipulated by at least one controller. Each airbag set is inflated so as to support the mattress, or the airbag set could be alternatively deflated and inflated to provide a massage effect. When the two airbag sets overlapping to each other are alternatively deflated and inflated, the raised surface of the mattress could appear to shift smoothly.

Description:
BACKGROUND OF THE INVENTION 
       [0001]    1. Field of the Invention 
         [0002]    The present invention relates to an adjusting system for mattresses, and especially to a mattress adjusting system most suitable for mattresses in a chair, a set of massage equipment and bedding products etc.; each mattress is provided therein at least with two airbag sets lapping one over the other, the mattress can be aerated through the airbag sets, it will make changing during aeration and discharging, in order that the mattress is in a state of supporting, massaging or having its raised portions shifted smoothly. 
         [0003]    2. Description of the Prior Art 
         [0004]    In order to increase comfort when in leaning on a mattress, there are at least a pair of mechanic pusher rods or cam units embedded in a mattress for adjusting the curvature of the mattress in presently available techniques in order to adjust the curvature of the mattress to meet the state suiting a user; for instance, the practice can be used in backrest mattresses of a car seat, the curvatures of the backrest mattresses of the car seat can be adjusted and changed to provide an effect of comfort for a user. 
         [0005]    The above stated technique of having mechanic pusher rods or cam units embedded in the mattresses occupies quite a large space, and a problem of resulting uneven surface pressures of the mattress can be induced, this makes discomfort of the user leaning on the mattresses; moreover, when in impacting of the car, undue concentrated pressures may be exerted to the user, this is thereby unsafe in use. Therefore, to provide in each mattress with a plurality of airbag sets and to provide a technique of adjusting the surface curvatures of the mattresses by inflation and deflation of the airbag sets becomes a present and future mainstream because of having suitable buffering effect. 
         [0006]    However, using of the airbag sets takes advantage of the airbag sets to form a soft closed space, by controlling aeration and discharging of air for the airbag sets, the soft closed space changes by inflation and deflation. When the pressure in the soft closed space becomes larger and larger, the airbag sets are inflated more and more to gradually assimilate a circular shape, this makes part of the mattresses especially protrusive; particularly when the airbag sets are allocated neighboring to or close to one another and are inflated, an evident dented area will be created between every two of these airbag sets. 
         [0007]    Therefore, when a mattress is provided therein with a plurality of airbag sets, if it is so happened that the areas where the user needs to be supported or massaged are just at these dented areas, the airbag sets provided in the mattress will be unable to give effects of supporting and massaging, even the user may feel segregated but not continuous effects of supporting. 
       SUMMARY OF THE INVENTION 
       [0008]    In view of the above stated, the inventor of the present invention provides a mattress adjusting system that provides a plurality of mattresses with better supporting, massaging and adjusting effects. 
         [0009]    In the adjusting system for the mattresses of the present invention, each mattress is provided at least with two airbag sets lapping one over the other, there is at least an aerating pump for providing air for a main air tube, each airbag set is connected with the main air tube via a branch air tube which each is provided with a control valve for opening/closing the branch air tube, operation of the above mentioned aerating pump and control valve is controlled at least by a controller. 
         [0010]    Thereby, in addition to making each airbag set provide supporting function for a mattress, a massaging effect can be provided by the mattress by alternatively shrinking by deflation and inflating through aeration, the airbags lapping one over the other will not have between them any dented area, so that the surface of the mattress can present a smoothly shifting phenomenon of some raised portions. 
         [0011]    And more, the main air tube can further be provided with a safe pressure releasing valve, when the pressure in the main air tube is overly large, the safe pressure releasing valve can perform safe pressure releasing; and moreover, the main air tube can be provided with a pressure detecting unit to detect the pressure in the main air tube; further, each branch air tube can also be provided with a pressure detecting unit to detect the pressure in the main air tube, in favor of accurate controlling inflation and deflation of the airbag sets by the controller, and even in favor of recording the degree of aeration of the airbag sets by the controller. 
         [0012]    In comparison with the technique now available, the present invention is used for adjusting the curvature of the mattress through the airbag sets, and can accurately change the curvature of the mattress by pressure control; no evident dented area will be created between every two of the airbag sets, thereby a user can feel more comfortable when in leaning on the mattress; besides, the mattress per se can give a pressure scattering effect, so that in inflation and deflation to deform the airbag sets, the curvature of the mattress surface is more uniform and milder and meets human body engineering; and more, supporting and massaging effects of the mattress can be more delicate and comfort, when two airbag sets lapping one over the other respectively shrink by deflation and inflate through aeration, the raised portion on the mattress surface presents a smoothly shifting state rather than a state of alternatively raising and lowering of two parts, this not only makes the user feel better touch and more comfortable, and the entire mattress can provide better sense of quality. 
         [0013]    The present invention will be apparent after reading the detailed description of the preferred embodiment thereof in reference to the accompanying drawings. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0014]      FIG. 1  is a schematic view showing the positions of airbag sets of a first embodiment of the present invention; 
           [0015]      FIG. 2  is a schematic view showing systematic allocation of the first embodiment of the present invention; 
           [0016]      FIG. 3  is a schematic view showing an action state ( 1 ) of the first embodiment of the present invention; 
           [0017]      FIG. 4  is a schematic view showing an action state ( 2 ) of the first embodiment of the present invention; 
           [0018]      FIG. 5  is a schematic view showing an action state ( 3 ) of the first embodiment of the present invention; 
           [0019]      FIG. 6  is a schematic view showing an action state ( 4 ) of the first embodiment of the present invention; 
           [0020]      FIG. 7  is a schematic showing systematic allocation of a second embodiment of the present invention; 
           [0021]      FIG. 8  is a schematic showing systematic allocation of a third embodiment of the present invention; 
           [0022]      FIG. 9  is a schematic view showing systematic allocation of a fourth embodiment of the present invention; 
           [0023]      FIG. 10  is a schematic view showing a state of use of the fourth embodiment of the present invention. 
       
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
       [0024]    Referring firstly to  FIGS. 1 and 2 , wherein  FIG. 1  is a schematic view showing the positions of airbag sets of a first embodiment of the present invention, while  FIG. 2  is a schematic view showing systematic allocation of the first embodiment of the present invention, in this embodiment it is shown that, each mattress  10  of the whole mattress adjusting system of the present invention is provided at least with two airbag sets  20  lapping one over the other to form an airbag group, and in the mattress adjusting system, there is at least an aerating pump  30  for providing air for a main air tube  40 , each airbag set  20  is connected with the main air tube  40  via a branch air tube  50  which each is provided with a control valve  60  for opening/closing the branch air tube  50 , operation of the above mentioned aerating pump  30  and control valve  60  is controlled at least by a controller  70 . 
         [0025]    The airbag set  20  is composed at least of an airbag  21 , while the airbag set  20  in this embodiment is composed of two airbags  21 ; three airbag sets  20  are lapped sequentially one over the other to form an airbag group. Array of the airbag sets  20  can be vertical or horizontal as a whole, the embodiment is described according to the vertical array; the mode of lapping is that an upper airbag set  20  laps over a lower airbag set  20 . 
         [0026]    The amount of the aerating pump  30  can be one or plural depending upon the requirement in use,  FIGS. 1 and 2  is described based on one aerating pump  30 . 
         [0027]    The main air tube  40  is provided with a safe pressure releasing valve  41 , when the pressure in the main air tube  40  is overly large, the safe pressure releasing valve  41  can perform safe pressure releasing; the main air tube  40  is provided with a tap air tube  42 , the branch air tubes  50  of the airbag sets  20  lapped are parallelly connected to same tap air tube  42 , a tap valve  43  is provided between the tap air tube  42  and the main air tube  40  to be controlled by the controller  70 . 
         [0028]    And more, each main air tube  40  can also be provided with a pressure detecting unit  80  to detect the pressure in the main air tube  40  and the branch air tube  50 , in favor of accurate controlling inflation and deflation of the airbag sets  20  by the controller  70 , and even in favor of recording the degree of aeration of the airbag sets by the controller  70 . 
         [0029]    Each control valve  60  has an air discharging passage  61  for air discharging of a corresponding airbag set  20 . 
         [0030]    Thereby, in addition to making each airbag set  20  provide supporting function for a mattress  10 , a massaging effect can be provided by the mattress  10  by alternatively shrinking by deflation and inflating through aeration, the airbag sets  20  lapping one over the other will not have between them any dented area, so that the surface of the mattress  10  can present a smoothly shifting phenomenon of some raised portions. 
         [0031]    The above mentioned main air tube  40 , safe pressure releasing valve  41 , tap air tube  42 , tap valve  43 , branch air tube  50 , air discharging passage  61  and pressure detecting unit  80  etc. can all or partially assembled in a valve assembly  100  in practice, or can be distributed respectively at suitable positions in the mattress  10 . 
         [0032]      FIGS. 3 ,  4 ,  5  and  6  are schematic views of action states ( 1 ), ( 2 ), ( 3 ) and ( 4 ) of the first embodiment of the present invention for describing the principle of inflating through aeration and deflating through discharging of the airbag sets  20  of the first embodiment of the present invention, the airbag sets  20  are expressed in a simple mode in the drawings, and each branch air tube  50  and its corresponding airbag set  20  have therebetween a tube  51 . 
         [0033]    As shown in  FIG. 3 , when it is desired to inflate one of the airbag sets  20 , the aerating pump  30  is activated and the tap valve  43  is opened; air enters the tap air tube  42  from the main air tube  40  to relieve the blocking state between the tap air tube  42  and the branch air tube  50  being blocked by the control valve  60  of a corresponding airbag set  20 , thus air flows into the airbag set  20  to have it inflated, when it is inflated to a size desired, the control valve  60  is activated to block flowing between the tap air tube  42  and the branch air tube  50  to keep the airbag set  20  in its inflation state, and a supporting effect is obtained. 
         [0034]    When it is desired to discharge air from the inflated airbag set  20 , in addition to directly discharge air out of the airbag set  20  via the air discharging passage  61  as shown in  FIG. 4 , the air released from the airbag set  20  can also injected into some other airbag set  20  by a pressure balancing means without consuming electric power, as is shown in  FIG. 5 , to inflate primarily the other airbag set  20 , after primary inflation of the other airbag set  20 , the residual air in the airbag set  20  is discharged out of the air discharging passage  61  as is shown in  FIG. 6 , and by activating of the aerating pump  30 , subsequent inflation of the primarily inflated airbag set  20  is performed. 
         [0035]    Please refer to  FIG. 1  simultaneously, by the fact that the airbag sets  20  are in the state of lapping one over the other, when two airbag sets  20  lapping one over the other respectively shrink by deflation and inflate through aeration, the raised portion on the surface of the mattress  10  presents a smoothly shifting state to adjust the effect of supporting of the mattress; and more, when deflation and inflation of the airbag sets  20  are frequent, the raised portion of the mattress  10  gets a massaging and adjusting effect in the mode of smoothly shifting. 
         [0036]    The above description for  FIGS. 3˜6  is done taking two airbag sets  20  lapping one over the other as an example, in practicing, a plurality of airbag sets  20  can be used in cooperation with one another to create deflation and inflation, in order to present different effects of supporting and massaging, and to present a massaging and adjusting effect in the mode of smoothly shifting. 
         [0037]      FIG. 7  is a schematic view showing systematic allocation of a second embodiment of the present invention, it discloses another mode and means for cooperative deflation and inflation among airbag sets  20 , the difference of the second embodiment from the first embodiment resides in that, the branch air tubes  50  of the airbag sets  20  lapping one over the other are parallelly connected to a main air tube  40  directly, and each control valve  60  has an air discharging passage  61  for air discharging of a corresponding airbag set  20 ; thereby deflation and inflation among airbag sets  20  can be controlled, while the inflated airbag sets  20  parallelly connected can be used to primarily inflate other airbag sets  20  to be inflated according to a pressure balancing principle, this can save electric power of operation of an air pump. 
         [0038]      FIG. 8  is a schematic view showing systematic allocation of a third embodiment of the present invention, the difference of the third embodiment from the first embodiment resides in that, the branch air tubes  50  of the airbag sets  20  lapping one over the other are parallelly connected to a main air tube  40  directly, the main air tube  40  is provided with an air exhaust valve  44 , this embodiment can similarly attain the object of controlling deflation and inflation of the airbag sets  20  and the inflated airbag sets  20  parallelly connected can also be used to primarily inflate other airbag sets  20  to be inflated according to a pressure balancing principle, this can save electric power of operation of an air pump too. 
         [0039]    As shown in  FIGS. 9 and 10  being respectively a schematic view showing systematic allocation of a fourth embodiment of the present invention and a schematic view showing a state of use of the fourth embodiment, the fourth embodiment is derived from the first embodiment, wherein by providing a plurality of tap air tubes  42  and tap valves  43 , a plurality of airbag sets  20  lapping one over the other or a single airbag set  20  can form various airbag groups, so that designated areas of the entire mattress  10  can present an effect of supporting and massaging. When amount of the airbag groups is larger in practice, the amount of aerating pumps  30  and controllers  70  can be increased according to requirement; the above stated mattress  10  in the drawings is described taking a seat in a car as an example, in practice, the range of use of the mattress  10  can include a seat, a set of massage equipment, a bedding product etc. 
         [0040]    The above stated and the drawings provided are only for illustrating preferred embodiments of the present invention, and not for giving any limitation to the scope of the present invention. It will be apparent to those skilled in this art that various equivalent modifications or changes without departing from the spirit, scope and characteristic of this invention shall fall within the scope of the appended claims and are intended to form part of this invention.