Patent Publication Number: US-2022218558-A1

Title: Air compression device

Description:
TECHNICAL FIELD 
     The present disclosure relates to a field of leg massagers with air compression, and in particular to an air compression device. 
     BACKGROUND 
     After surgery, patients often need to stay in bed for rest. It is inconvenient to exercise after surgery, but if a patient lacks exercise after surgery, it is easy to have limb weakness, and even cause complications, which leads to thrombosis. In order to prevent this, patients generally use a pressure massage device to massage limbs. An air pressure physiotherapy instrument mainly applies circulatory pressure on the limbs and tissues by repeatedly inflating and deflating multi-chamber airbags, and evenly and orderly squeezes distal ends of the limbs to proximal ends of the limbs, thereby promoting blood circulation, improving microcirculation in the body, accelerating return of limb tissue fluid, preventing formation of thrombosis and preventing limb edema. Therefore, the air pressure physiotherapy instrument directly or indirectly treats many diseases related to blood and lymph circulation. The air pressure physiotherapy instrument generally comprises a host, massaging sleeves and a connecting pipe. An air compression leg massager is an air pressure physiotherapy instrument for treatment of legs and feet. Air compression leg massagers on the market are generally heavy and bulky, which are inconvenient to use. 
     SUMMARY 
     An object of the present disclosure is to provide an air compression device to solve a problem that a conventional host of an air compression leg massager is heavy and bulky and is inconvenient to use. 
     To achieve the above object, the present disclosure provides an air compression device. The air compression device comprises a bottom shell, a top shell arranged at a top portion of the bottom shell, and a solenoid valve assembly. 
     A handle hole is provided on one side of the top shell. The solenoid valve assembly comprises a plurality of solenoid valves. The plurality of solenoid valves are fixedly installed on a solenoid valve air distribution bracket. A row of control air passages is disposed on a top portion of the solenoid valve air distribution bracket. The row of control air passages comprises first control air passages disposed on a middle portion of the row of control air passages and second control air passages on two sides of the row of control air passages. The first control air passages are one-to-one communicated with a first row of working air passages disposed on an upper portion of one side of the solenoid valve air distribution bracket. The second control air passages are one-to-one communicated with a second row of working air passages disposed on a lower portion of the one side of the solenoid valve air distribution bracket. The plurality of solenoid valves are one-to-one disposed on the row of control air passages. The plurality of solenoid valves control communication between the first row of working air passages or the second row of working air passages and a main air pipe. 
     Optionally, the row of control air passages are five control air passages arranged in a low. The five control air passages are disposed on the top portion of the solenoid valve air distribution bracket. The five control air passages comprise three first control air passages disposed on the middle portion of the five control air passages and two second control air passages on the two sides of the five control air passages. The three first control air passages are one-to-one communicated with the first row of working air passages disposed on the upper portion of the one side of the solenoid valve air distribution bracket. The two second control air passages on two ends of the five control air passages are one-to-one communicated with the second row of working air passages disposed on the lower portion of the one side of the solenoid valve air distribution bracket. The plurality of solenoid valves are one-to-one disposed on the five control air passages. The plurality of solenoid valves control communication between the first row of working air passages or the second row of working air passages and a main air pipe. 
     Optionally, two working air passages arranged on two sides of the first row of working air passages and the second row of working air passages are strip-shaped grooves. The strip-shaped grooves extend from a surface of the solenoid valve air distribution bracket to a middle portion of the solenoid valve air distribution bracket. Air passage guide gaskets are arranged on the surface of the solenoid valve air distribution bracket. The air passage guide gaskets cover the strip-shaped grooves. A middle position of each of the air passage guide gaskets defines an air hole. 
     Optionally, two pieces of the air passage guide gaskets are arranged symmetrically on a left portion and a right portion of the solenoid valve air distribution bracket. 
     Optionally, an air pump support bracket is fixedly installed in the bottom shell. An air pump is fixedly installed in the air pump support bracket. An air outlet of the air pump is communicated with the plurality of solenoid valves through an air pipe and a first straight pipe. The air pipe is fixedly connected with a first end of a first L-shaped air pipe through a second straight pipe. A second end of the first L-shaped air pipe is fixedly connected with a first end of a second L-shaped air pipe through a third straight pipe. A second end of the second L-shaped air pipe is fixedly connected with an air outlet of the solenoid valve air distribution bracket. 
     Optionally, a control printed circuit board (PCB) is fixedly installed in the bottom shell. A liquid crystal display (LCD) light guide plate is fixedly installed on a top portion of the control PCB. An LCD is fixedly installed on a top surface of the LCD light guide plate. An LCD rubber sleeve is sleeved on the LCD. 
     Optionally, a battery and a power supply PCB are fixedly installed in the bottom shell. The battery is electrically connected with the power supply PCB. 
     Optionally, an air pump buffer cotton is adhered between the air pump and the air pump support bracket. 
     Optionally, the air compression device further comprises an air seat. Solenoid valve sealing gaskets are disposed between the air seat and the solenoid valve sir distribution bracket. 
     Optionally, the air pipe is communicated with a pressure sensor disposed on the control PCB. 
     Compared with the prior art, the row of control air passages is disposed on the top portion of the solenoid valve air distribution bracket. The first control air passages are one-to-one communicated with the first row of working air passages disposed on the upper portion of the one side of the solenoid valve air distribution bracket. The second control air passages are one-to-one communicated with the second row of working air passages disposed on the lower portion of the one side of the solenoid valve air distribution bracket. The plurality of solenoid valves are separately disposed on the top portion of the row of control air passages and control communication between the first row of working air passages or the second row of working air passages and the main air pipe. In the air compression device of the present disclosure, by providing two rows of working air passages on the solenoid valve air distribution bracket with a simple structure, the row of control air passages is directly communicated with the two rows of working air passages, which avoids a problem that a conventional air compression massager needs to dispose connecting pipes in a host of the conventional air compression massager, so that a size of the air compression device of the present disclosure is small and there is no problem of unsmooth airflow. Further, since the size of the air compression device of the present disclosure is smaller than that of the conventional air compression massager, the handle hole is defined on the one side of the top shell, because the device is smaller than the traditional device, the handle hole enables the air compression device to be hand-held or hung on a wall when in use. 
    
    
     
       BRIEF DESCRIPTION OF DRAWINGS 
         FIG. 1  is a schematic diagram of an air compression device of the present disclosure. 
         FIG. 2  is an exploded schematic diagram of the air compression device of the present disclosure. 
         FIG. 3  is a schematic diagram of a solenoid valve assembly of the present disclosure. 
         FIG. 4  is an exploded schematic diagram of the solenoid valve assembly of the present disclosure. 
         FIG. 5  is a schematic diagram of a solenoid valve air distribution bracket of the present disclosure. 
     
    
    
     DETAILED DESCRIPTION 
     Technical solutions in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments of the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present disclosure. 
     As shown in  FIGS. 1-5 , the present disclosure provides an air compression device. 
     The air compression device is configured to inflate leg sleeves and comprises a bottom shell  10  and a top shell  20  arranged at a top portion of the bottom shell  10 . A middle shell  30  is fixedly installed between the bottom shell  10  and the top shell  20 . The middle shell  30  is fixed on the top shell  20  by screws. 
     A handle hole is provided on one side of the top shell  20  and the middle shell  30 . A solenoid valve assembly  60  is disposed in the bottom shell  10 . The solenoid valve assembly comprises five solenoid valves  61 . The five solenoid valves  61  are fixedly installed on a top portion of a solenoid valve air distribution bracket  63 . A row of five control air passages  632  is disposed on the top portion of the solenoid valve air distribution bracket  63 . The row of control air passages comprises three first control air passages disposed on a middle portion of the row of five control air passages  632  and two second control air passages on two sides of the row of five control air passages  632 . The three first control air passages are one-to-one communicated with a first row of working air passages  631  disposed on an upper portion of one side of the solenoid valve air distribution bracket  63 . The two second control air passages  632  are one-to-one communicated with a second row of working air passages  634  disposed on a lower portion of the one side of the solenoid valve air distribution bracket  63 . The five solenoid valves  61  are one-to-one disposed on the row of five control air passages. The five solenoid valves  61  control communication between the first row of working air passages  631  or the second row of working air passages  634  and a main air pipe  633 . An air seat  62  is fixedly installed on one side of the solenoid valve air distribution bracket  63 . The air seat  62  comprises five air nozzle sockets and a heating socket. A direct current (DC) socket  65  is fixedly installed in the solenoid valve air distribution bracket  63 . An air seat cover  66  is fixedly installed on one end of the air seat  62 . 
     Compared with the prior art, the row of control air passages  632  is disposed on the top portion of the solenoid valve air distribution bracket  63 . The first control air passages  632  are one-to-one communicated with the first row of working air passages  631  disposed on the upper portion of the one side of the solenoid valve air distribution bracket  63 . The second control air passages  632  are one-to-one communicated with the second row of working air passages  634  disposed on the lower portion of the one side of the solenoid valve air distribution bracket  63 . The five solenoid valves  61  are separately disposed on the top portion of the row of control air passages  632  and control communication between the first row of working air passages  631  or the second row of working air passages  634  and the main air pipe  633 . In the air compression device of the present disclosure, by providing two rows of working air passages on the solenoid valve air distribution bracket  63  with a simple structure, the row of control air passages is directly communicated with the two rows of working air passages, which avoids a problem that a conventional air compression massager needs to dispose connecting pipes in a host of the conventional air compression massager, so that a size of the air compression device of the present disclosure is small and there is no problem of unsmooth airflow. Further, since the size of the air compression device of the present disclosure is smaller than that of the conventional air compression massager, the handle hole is defined on the one side of the top shell  20 , because the air compression device of the present disclosure is smaller than the traditional device, the handle hole enables the air compression device to be hand-held or hung on a wall when in use. 
     In one embodiment of the air compression device, as shown in  FIGS. 1-5 , on the basis of the previous embodiments, two working air passages arranged on two sides of the first row of working air passages  631  and the second row of working air passages  634  are strip-shaped grooves. The strip-shaped grooves extend from a surface of the solenoid valve air distribution bracket  63  to a middle portion of the solenoid valve air distribution bracket  63 . Air passage guide gaskets  64  are arranged on the surface of the solenoid valve air distribution bracket. The air passage guide gaskets  64  cover the strip-shaped grooves. A middle position of each of the air passage guide gaskets  64  defines an air hole. 
     In one embodiment of the air compression device, as shown in  FIGS. 1-5 , on the basis of the previous embodiments, two pieces of the air passage guide gaskets  64  are arranged symmetrically on a left portion and a right portion of the solenoid valve air distribution bracket  63 . 
     In one embodiment of the air compression device, as shown in  FIGS. 1-5 , on the basis of the previous embodiments, an air pump support bracket  50  is fixedly installed in the bottom shell  10 . An air pump  51  is fixedly installed in the air pump support bracket  50 . An air outlet of the air pump  51  is communicated with the five solenoid valves  61  through an air pipe  52  and a first straight pipe. The air pipe  52  is fixedly connected with a first end of a first L-shaped air pipe  53  through a second straight pipe. A second end of the first L-shaped air pipe  53  is fixedly connected with a first end of a second L-shaped air pipe  54  through a third straight pipe. A second end of the second L-shaped air pipe  54  is fixedly connected with an air outlet of the solenoid valve air distribution bracket  63 . 
     In one embodiment of the air compression device, as shown in  FIGS. 1-5 , based on the previous embodiments, the air outlet of the air pump  51  is connected to the five solenoid valves  61  through the air pipe  52  and the first straight pipe. Each of the five solenoid valve  61  correspond to one air outlet. Each air outlet of corresponds to an air leg sleeve. Each of the five solenoid valves independently controls a corresponding air leg sleeve, which realizes precise control of inflatable leg sleeves. 
     In one embodiment of the air compression device, as shown in  FIGS. 1-5 , based on the previous embodiments, a control printed circuit board (PCB)  40  is fixedly installed in the bottom shell  10 . The control PCB is fixed installed on the top shell  20  through screws. A liquid crystal display (LCD) light guide plate  41  is fixedly installed on a top portion of the control PCB  40 . An LCD  42  is fixedly installed on a top surface of the LCD light guide plate  41 . An LCD rubber sleeve  43  is sleeved on the LCD  42 . 
     In one embodiment of the air compression device, as shown in  FIGS. 1-5 , based on the previous embodiments, the air pump  51  and the five solenoid valves  61  are controlled to work by the control PCB  40 , so that legs are massaged by inflating and inhaling of the leg sleeves. Thus, blood circulation is promoted and formation of venous thrombosis is prevented. 
     In one embodiment of the air compression device, as shown in  FIGS. 1-5 , based on the previous embodiments, the LCD rubber sleeve  43  is fixed between the LCD  42  and the top shell  20 , and plays a role of buffering and shading between the LCD  42  and the bottom shell  20 . 
     In one embodiment of the air compression device, as shown in  FIGS. 1-5 , based on the previous embodiments, a battery  70  and a power supply PCB  71  are fixedly installed in the bottom shell  10 . The battery  70  is electrically connected with the power supply PCB  71 . 
     In one embodiment of the air compression device, as shown in  FIGS. 1-5 , based on the previous embodiments, a battery buffer cotton is attached to the battery  70 , the battery buffer cotton is fixed on the air pump support bracket  50  by pre-pressing. The power supply PCB  71  is fixed on the air pump support bracket  50  by screws. 
     In one embodiment of the air compression device, as shown in  FIGS. 1-5 , based on the previous embodiments, an air pump buffer cotton is adhered between the air pump and the air pump support bracket. The air pump buffer cotton is configured to buffer the noise generated by vibration of the air pump  51  when it is working. 
     In one embodiment of the air compression device, as shown in  FIGS. 1-5 , on the basis of the previous embodiments, the control PCB  40  is respectively electrically connected with the LCD  42 , the air pump  51 , the five solenoid valves  61 , the DC socket  65 , and the power supply PCB  71 . 
     In one embodiment of the air compression device, as shown in  FIGS. 1-5 , based on the previous embodiments, solenoid valve sealing gaskets  64  are disposed between the air seat  62  and the solenoid valve sir distribution bracket  63 . 
     In one embodiment of the air compression device, as shown in  FIGS. 1-5 , based on the previous embodiments, the air pipe  52  is communicated with a pressure sensor disposed on the control PCB  40 . 
     It should be noted that, in the present disclosure, relational terms, such as “first” and “second”, are only used to distinguish one feature or operation from another feature or operation, and do not necessarily require or imply any actual relationship or sequence exists between these features or operations. Moreover, terms “comprise”, “include” or any other variation thereof are intended to encompass non-exclusive inclusion, such that a process, method, article or device not only comprises elements explicitly listed, but also comprises elements not explicitly listed or other elements inherent to such a process, method, article or device. 
     Although the embodiments of the present disclosure have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present disclosure. The scope of the present disclosure is defined by the appended claims and their equivalents.