Inflation and exhaust switching device and air pump

Abstract

The utility model relates to the technical field of air pumps, and provides an air inflation and air exhaust switching device which comprises a valve seat, a valve head and two switching assemblies. A communicating pipe and a communicating port are arranged on the two sides of the valve seat respectively, and a first communicating hole, a second communicating hole and a communicating groove are formed in the upper end of the valve seat; the valve head is arranged at the upper end of the valve seat, an air inlet pipe and an air outlet pipe are arranged on the side, located on the communicating port, of the valve head, and the valve head is provided with a first communicating cavity, a second communicating cavity, a third communicating cavity and an air leakage cavity. Wherein one switching assembly is used for switching the first communication cavity to be communicated with the air release cavity or the first communication hole, and the other switching assembly is used for switching the second communication cavity to be communicated with the third communication cavity or the second communication hole. Therefore, the deflation time of the air bag can be effectively shortened. In addition, the utility model further provides an air pump.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of air pumps, in particular to an air inflation and air extraction switching device and an air pump. BACKGROUND

[0002] An air pump is a device for removing air from a closed space or adding air to a closed space, which is commonly used in various massage chairs, blood pressure meters and the like.

[0003] In the related art, the air pump has a fixed position air inlet and an air outlet, the air inlet is in communication with the atmosphere, and the air outlet is in communication with the air bag of various massage chairs, blood pressure meters and the like, and the air pump realizes air inflation of the air bag when working.

[0004] Among them, when the air pump stops working, the air bag can only slowly exhaust the gas by the air pump, so that the air exhaust time of the air bag is long, and therefore needs to be improved. CONTENT OF THE INVENTION

[0005] In order to effectively reduce the air exhaust time of the air bag, in a first aspect, the present application provides an air inflation and air extraction switching device.

[0006] The air inflation and air extraction switching device provided by the present application adopts the following technical scheme:

[0007] The air inflation and air extraction switching device comprises a valve seat, a valve head and two switching components; two sides of the valve seat are respectively provided with a communication pipe and a communication port, an upper end of the valve seat is provided with a first communication hole, a second communication hole and a communication groove, the communication pipe, the communication groove and the first communication hole are sequentially and communicatively arranged, and the communication port is in communication with the second communication hole; the valve head is arranged at the upper end of the valve seat, one side of the valve head located at the communication port is provided with an air inlet pipe and an air outlet pipe, the valve head is provided with a first communication cavity, a second communication cavity, a third communication cavity and an air exhaust cavity, the first communication cavity is in communication with the air inlet pipe, the air exhaust cavity and the first communication hole, the second communication cavity is in communication with the air outlet pipe, the third communication cavity and the second communication hole, and the third communication cavity is in communication with the communication groove;

[0008] One of the switching components is used to switch the first communication cavity to be in communication with the air exhaust cavity or the first communication hole, and the other switching component is used to switch the second communication cavity to be in communication with the third communication cavity or the second communication hole, and when the first communication cavity is in communication with the first communication hole, the second communication cavity is in communication with the second communication hole.

[0009] By adopting the above technical scheme, in actual application, the communication pipe is in communication with the air bag of various massage chairs, blood pressure meters and the like, the air inlet pipe is in communication with the air outlet of the air pump, and the air outlet pipe is in communication with the air inlet of the air pump;

[0010] In the initial state, one of the switching assemblies connects the first communicating cavity with the first communicating hole, and the other switching assembly connects the second communicating cavity with the second communicating hole, the air pump works to make the air flow from the communicating port to the second communicating hole, and the air flows through the second communicating cavity and the air outlet tube to the air inlet port to realize the air intake of the air pump, then the air flows from the air outlet port to the air inlet tube, and the air flows through the first communicating cavity, the first communicating hole, the communicating groove and the communicating tube to the air bag to realize the inflation of the air bag;

[0011] When the two switching assemblies work, one of the switching assemblies connects the first communicating cavity with the air release cavity, and the other switching assembly connects the second communicating cavity with the third communicating cavity, the air pump works to make the air in the air bag flow from the communicating tube to the communicating groove, and the air flows through the communicating groove, the third communicating cavity, the second communicating cavity and the air outlet tube to the air inlet port to realize the air intake of the air pump, then the air flows from the air outlet port to the air inlet tube, and the air flows through the first communicating cavity and the air release cavity to the atmosphere to realize the air exhaust of the air bag, so that the air bag can be quickly deflated, thereby effectively reducing the deflation time of the air bag.

[0012] Preferably, the valve seat is provided with a plurality of clamping blocks on the circumferential side, and the lower end of the valve head is provided with a plurality of buckles, each of which is clamped in each of the clamping blocks.

[0013] By adopting the above technical scheme, a plurality of clamping blocks and a plurality of buckles are arranged to facilitate the installation and disassembly between the valve seat and the valve head.

[0014] Preferably, the third communicating cavity extends to one side of the valve head, and the valve head is provided with a plugging bead at the end of the third communicating cavity away from the second communicating cavity.

[0015] By adopting the above technical scheme, the third communicating cavity extends to one side of the valve head by arranging the plugging bead, so as to facilitate the molding of the third communicating cavity, and the plugging bead can block one end of the third communicating cavity to avoid air leakage from the third communicating cavity as much as possible.

[0016] Preferably, the upper end of the valve head is provided with sound-absorbing cotton, and the sound-absorbing cotton is located at the end of the air release cavity away from the first communicating cavity.

[0017] By adopting the above technical scheme, the sound-absorbing cotton is arranged to reduce the noise of air flowing out of the air release cavity.

[0018] Preferably, the inflation and air exhaust switching device further comprises a connecting head, and the connecting head is inserted into the air inlet tube and the air outlet tube.

[0019] By adopting the above technical scheme, the connecting head is arranged to facilitate the communication and connection between the air inlet tube, the air outlet tube and the air pump.

[0020] Preferably, the inflation / exhaustion switching device further comprises a mounting seat, and the valve seat is detachably connected to the upper end of the mounting seat.

[0021] By adopting the technical scheme, the valve seat is mounted on the mounting seat, and the mounting seat is used for mounting on the air pump, so as to facilitate the mounting of the inflation / exhaustion switching device and the air pump.

[0022] Preferably, the switching assembly comprises a wire holder, a coil, a fixed metal core, a movable metal core and a spring, the wire holder is arranged on the mounting seat, the coil is sleeved on the wire holder, the fixed metal core is arranged in the lower end of the wire holder, the movable metal core is slidably connected to the wire holder, and the spring is arranged between the fixed metal core and the movable metal core to drive the movable metal core to abut against the top surface of the first communication cavity or the second communication cavity, so that the first communication cavity is communicated with the first communication hole or the second communication cavity is communicated with the second communication hole.

[0023] By adopting the technical scheme, in the initial state, the movable metal core is driven by the spring to make the first communication cavity communicated with the first communication hole or the second communication cavity communicated with the second communication hole, and in the coil energized state, the fixed metal core is adsorbed to the movable metal core, so that the movable metal core moves downward, the first communication cavity is communicated with the exhaust cavity, or the second communication cavity is communicated with the third communication cavity, so as to realize the switching of the inflation / exhaustion working state of the air pump.

[0024] Preferably, the switching assembly further comprises a sealing gasket, and the sealing gasket is sleeved on the upper end of the movable metal core.

[0025] By adopting the technical scheme, the sealing gasket is arranged to improve the stability of the inflation / exhaustion working state of the air pump.

[0026] In the second aspect, the application provides an air pump.

[0027] The air pump provided by the application adopts the following technical scheme:

[0028] The air pump comprises the inflation / exhaustion switching device described above.

[0029] In summary, the application has at least one of the following beneficial technical effects:

[0030] 1. Two switching components work, one of which makes the first communication cavity and the air release cavity connected, the other makes the second communication cavity and the third communication cavity connected, the air pump works to make the air in the air bag flow from the communication pipe to the communication groove, and the air flows through the communication groove, the third communication cavity, the second communication cavity and the air outlet pipe to the air inlet to realize the air inlet of the air pump, then the air flows from the air outlet to the air inlet pipe, and the air flows through the first communication cavity and the air release cavity to the atmosphere to realize the air extraction of the air bag, so that the air bag can be quickly deflated, thereby effectively reducing the deflation time of the air bag;

[0031] 2. By setting the blocking bead, the third communication cavity extends to one side of the valve head, so as to facilitate the molding of the third communication cavity, and the blocking bead can block one end of the third communication cavity to avoid air leakage from the third communication cavity as much as possible;

[0032] 3. By setting the wire holder, coil, fixed metal core, movable metal core and spring, in the initial state, the movable metal core is driven by the spring to make the first communication cavity and the first communication hole connected, or the second communication cavity and the second communication hole connected, in the coil power-on state, the fixed metal core adsorbs the movable metal core to make the movable metal core move downward to make the first communication cavity and the air release cavity connected, or the second communication cavity and the third communication cavity connected, to realize the switching of the air pump inflation and air extraction working state. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 is the inflation and air extraction switching device explosion structure schematic diagram in the embodiment of the application;

[0034] Figure 2 is the inflation and air extraction switching device one cross-section structure schematic diagram in the embodiment of the application;

[0035] Figure 3 is the inflation and air extraction switching device another cross-section structure schematic diagram in the embodiment of the application.

[0036] Reference signs: 1, valve seat; 11, communication pipe; 12, communication port; 13, first communication hole; 14, second communication hole; 15, communication groove; 16, clamping block; 2, valve head; 21, air inlet pipe; 22, air outlet pipe; 23, first communication cavity; 24, second communication cavity; 25, third communication cavity; 26, air release cavity; 27, buckle; 28, blocking bead; 29, sound-absorbing cotton; 3, switching component; 31, wire holder; 32, coil; 33, fixed metal core; 34, movable metal core; 35, spring; 36, sealing gasket; 4, connecting head; 5, mounting seat. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings Figures 1-3 The application will be further described in detail.

[0038] The application discloses an air inflation and air extraction switching device.

[0039] With reference to Figure 1 , the air inflation and air extraction switching device comprises a valve seat 1, a valve head 2 and two switching assemblies 3.

[0040] With reference to Figure 1 , Figure 2 and Figure 3 , the valve seat 1 is provided with a communication pipe 11 and a communication port 12 on two sides thereof, and the communication pipe 11 and the communication port 12 are arranged at intervals along the length direction of the valve seat 1; the upper end of the valve seat 1 is provided with a first communication hole 13, a second communication hole 14 and a communication groove 15, and the first communication hole 13 and the second communication hole 14 are arranged in a penetrating manner; meanwhile, the communication pipe 11, the communication groove 15 and the first communication hole 13 are sequentially arranged in a communication manner, and the communication port 12 is in communication with the second communication hole 14.

[0041] The valve head 2 is installed at the upper end of the valve seat 1, and the valve head 2 is provided with an air inlet pipe 21 and an air outlet pipe 22 at intervals on one side of the communication port 12; the lower end of the valve head 2 is provided with a first communication cavity 23 and a second communication cavity 24, and the valve head 2 is provided with a third communication cavity 25 and a gas exhaust cavity 26. The first communication cavity 23 is in communication with the air inlet pipe 21, the gas exhaust cavity 26 and the first communication hole 13; the second communication cavity 24 is in communication with the air outlet pipe 22, the third communication cavity 25 and the second communication hole 14; and the third communication cavity 25 is in communication with the communication groove 15.

[0042] The two switching assemblies 3 are respectively arranged in the first communication cavity 23 and the second communication cavity 24, and specifically, one of the switching assemblies 3 is arranged to switch the first communication cavity 23 to be in communication with the gas exhaust cavity 26 or the first communication hole 13, and the other switching assembly 3 is arranged to switch the second communication cavity 24 to be in communication with the third communication cavity 25 or the second communication hole 14; it should be noted that when the first communication cavity 23 is in communication with the first communication hole 13, the first communication cavity 23 is isolated from the gas exhaust cavity 26, and the second communication cavity 24 is in communication with the second communication hole 14, and the second communication cavity 24 is isolated from the third communication cavity 25.

[0043] In practical application, the communicating pipe 11 is communicated with the air bag of various massage chairs, blood pressure meters and other devices, the air inlet pipe 21 is communicated with the air outlet of the air pump, and the air outlet pipe 22 is communicated with the air inlet of the air pump; in the initial state, one of the switching assemblies 3 makes the first communicating cavity 23 communicated with the first communicating hole 13, and the other switching assembly 3 makes the second communicating cavity 24 communicated with the second communicating hole 14, the air pump works to make the air flow from the communicating hole 12 to the second communicating hole 14, and the air flows through the second communicating cavity 24 and the air outlet pipe 22 to the air inlet to realize the air inlet of the air pump, and then the air flows from the air outlet to the air inlet pipe 21, and the air flows through the first communicating cavity 23, the first communicating hole 13, the communicating groove 15 and the communicating pipe 11 to the air bag to realize the inflation of the air bag;

[0044] When the two switching assemblies 3 work, one of the switching assemblies 3 makes the first communicating cavity 23 communicated with the air release cavity 26, and the other switching assembly 3 makes the second communicating cavity 24 communicated with the third communicating cavity 25, the air pump works to make the air in the air bag flow from the communicating pipe 11 to the communicating groove 15, and the air flows through the communicating groove 15, the third communicating cavity 25, the second communicating cavity 24 and the air outlet pipe 22 to the air inlet to realize the air inlet of the air pump, and then the air flows from the air outlet to the air inlet pipe 21, and the air flows through the first communicating cavity 23 and the air release cavity 26 to the atmosphere to realize the air exhaust of the air bag, so that the air bag can be quickly deflated, thereby effectively reducing the deflation time of the air bag.

[0045] Referring to Figure 1 In some embodiments, the circumferential side of the valve seat 1 is protruded to form a plurality of clamping blocks 16, and the lower end of the valve head 2 is protruded to form a plurality of buckles 27, the number of the buckles 27 is the same as that of the clamping blocks 16, each buckle 27 is clamped to each clamping block 16, so that the valve head 2 can be detachably connected to the valve seat 1, the structure is simple and the operation is convenient, thereby facilitating the installation and dismounting between the valve seat 1 and the valve head 2.

[0046] Referring to Figure 1 and Figure 2 In some embodiments, the third communicating cavity 25 extends to one side of the valve head 2, so that the third communicating cavity 25 is communicated with the outside, thereby facilitating the molding of the third communicating cavity 25, and facilitating the production of the valve head 2. Meanwhile, one end of the third communicating cavity 25 (i.e. the end of the valve head 2 away from the second communicating cavity 24) is embedded with a plugging bead 28 to block the third communicating cavity 25, so as to avoid the air leakage from the third communicating cavity 25.

[0047] Referring to Figure 1 and Figure 3In some embodiments, the upper end of the valve head 2 is provided with a sound-absorbing cotton 29 which is inserted into the valve head 2 and located at the end of the air release cavity 26 away from the first communication cavity 23, so as to buffer the air flowing out of the air release cavity 26, reduce the noise of the air flowing out of the air release cavity 26, and reduce the noise of the air pump working.

[0048] With reference to Figure 1 In some embodiments, the air charging and air pumping switching device further comprises a connecting head 4, the upper end of the connecting head 4 is simultaneously inserted into the air inlet pipe 21 and the air outlet pipe 22, and the lower end of the connecting head 4 is inserted into the air inlet and the air outlet of the air pump, so as to realize the communication connection of the air inlet pipe 21 and the air outlet pipe 22 and the air pump, and the installation of the connecting head 4 is simple and convenient.

[0049] In some embodiments, the air charging and air pumping switching device further comprises a mounting seat 5 which is used for mounting on the air pump, and the valve seat 1 is detachably connected to the upper end of the mounting seat 5, so as to facilitate the installation of the air charging and air pumping switching device and the air pump. In this embodiment, the valve seat 1 is fixedly connected to the mounting seat 5 by bolts, so as to realize the detachable connection between the valve seat 1 and the mounting seat 5. In other embodiments, the valve seat 1 can also be realized by the way of insertion and clamping, which is not limited in the application.

[0050] With reference to Figure 1 and Figure 2 In some embodiments, the switching assembly 3 comprises a bobbin 31, a coil 32, a fixed metal core 33, a movable metal core 34 and a spring 35, the bobbin 31 is fixedly connected to the mounting seat 5, the coil 32 is made of copper wire and is sleeved outside the bobbin 31, the fixed metal core 33 and the movable metal core 34 are both iron cores, the fixed metal core 33 is fixedly connected to the lower end of the bobbin 31, and the movable metal core 34 is slidably connected to the bobbin 31 in the vertical direction and located above the fixed metal core 33.

[0051] One end of the spring 35 is fixedly connected to the upper end of the fixed metal core 33, and the other end is fixedly connected to the lower end of the movable metal core 34, so as to drive the movable metal core 34 away from the fixed metal core 33, make the movable metal core 34 abut against the top surface of the first communication cavity 23, so as to make the first communication cavity 23 and the first communication hole 13 communicate with each other, or make the movable metal core 34 abut against the top surface of the second communication cavity 24, so as to make the second communication cavity 24 and the second communication hole 14 communicate with each other.

[0052] In the initial state, the movable metal core 34 is driven by the spring 35 to block the air leakage cavity 26, so that the first communication cavity 23 is communicated with the first communication hole 13, or the movable metal core 34 blocks the third communication cavity 25, and the second communication cavity 24 is communicated with the second communication hole 14. In the state that the coil 32 is powered, the fixed metal core 33 attracts the movable metal core 34, so that the movable metal core 34 moves downward, the movable metal core 34 blocks the first communication hole 13, so that the first communication cavity 23 is communicated with the air leakage cavity 26, or the movable metal core 34 blocks the second communication hole 14, so that the second communication cavity 24 is communicated with the third communication cavity 25, to realize the switching of the air pump in the inflation and air extraction working state.

[0053] In some embodiments, the switching assembly 3 further comprises a sealing pad 36 sleeved on the upper end of the movable metal core 34, to ensure the sealing of the air leakage cavity 26, the third communication cavity 25, the first communication hole 13 or the second communication hole 14, to improve the stability of the air pump in the inflation and air extraction working state.

[0054] The implementation principle of the embodiment is as follows: in actual application, the communication pipe 11 is communicated with the air bag of various massage chairs, blood pressure meters and the like, the air inlet pipe 21 is communicated with the air outlet of the air pump, and the air outlet pipe 22 is communicated with the air inlet of the air pump; in the initial state, one of the switching assemblies 3 makes the first communication cavity 23 communicated with the first communication hole 13, and the other switching assembly 3 makes the second communication cavity 24 communicated with the second communication hole 14, the air pump works to make the air flow from the communication hole 12 to the second communication hole 14, and the air flows through the second communication cavity 24 and the air outlet pipe 22 to the air inlet, to realize the air inlet of the air pump, and then the air flows from the air outlet to the air inlet pipe 21, and the air flows through the first communication cavity 23, the first communication hole 13, the communication groove 15 and the communication pipe 11 to the air bag, to realize the inflation of the air bag;

[0055] When the two switching assemblies 3 work, one of the switching assemblies 3 makes the first communication cavity 23 communicated with the air leakage cavity 26, and the other switching assembly 3 makes the second communication cavity 24 communicated with the third communication cavity 25, the air pump works to make the air in the air bag flow from the communication pipe 11 to the communication groove 15, and the air flows through the communication groove 15, the third communication cavity 25, the second communication cavity 24 and the air outlet pipe 22 to the air inlet, to realize the air inlet of the air pump, and then the air flows from the air outlet to the air inlet pipe 21, and the air flows through the first communication cavity 23 and the air leakage cavity 26 to the atmosphere, to realize the air extraction of the air bag, so that the air bag can be rapidly deflated, thereby effectively reducing the deflation time of the air bag.

[0056] The embodiment of the application further discloses an air pump.

[0057] The air pump comprises the inflation and air extraction switching device described in the above embodiment.

[0058] The above are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application, and thus: any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A charge, evacuation switching device, characterized by, The utility model provides a valve seat (1), valve head (2) and two switching components (3), two sides of valve seat (1) are equipped with the communicating pipe (11) and the communicating mouth (12) respectively, the upper end of valve seat (1) is equipped with first communicating hole (13), second communicating hole (14) and communicating groove (15), communicating pipe (11), communicating groove (15) and first communicating hole (13) are sequentially communicated and are equipped, communicating mouth (12) is communicated with second communicating hole (14), valve head (2) is located in the upper end of valve seat (1), the one side of valve head (2) is equipped with air inlet pipe (21) and air outlet pipe (22) in communicating mouth (12), valve head (2) is equipped with first communicating cavity (23), second communicating cavity (24), third communicating cavity (25) and air release cavity (26), first communicating cavity (23) is communicated with air inlet pipe (21), air release cavity (26) and first communicating hole (13), second communicating cavity (24) is communicated with air outlet pipe (22), third communicating cavity (25) and second communicating hole (14), and third communicating cavity (25) is communicated with communicating groove (15), one of the switching components (3) is used for switching the first communicating cavity (23) and the air release cavity (26) or the first communicating hole (13) is communicated, another switching component (3) is used for switching the second communicating cavity (24) and the third communicating cavity (25) or the second communicating hole (14) is communicated, and when the first communicating cavity (23) and the first communicating hole (13) are communicated, the second communicating cavity (24) and the second communicating hole (14) are communicated.

2. The charge, bleed switching device of claim 1, wherein, The periphery of the valve seat (1) is provided with a plurality of clamping blocks (16), and the lower end of the valve head (2) is provided with a plurality of buckles (27), each buckle (27) is clamped in each clamping block (16).

3. The charge, bleed switching device of claim 1, wherein, The third communicating cavity (25) extends to one side of the valve head (2), and the valve head (2) is provided with a plugging bead (28) at one end away from the second communicating cavity (24) of the third communicating cavity (25).

4. The device of claim 1, wherein, The upper end of the valve head (2) is provided with sound-absorbing cotton (29), and the sound-absorbing cotton (29) is located at one end away from the first communicating cavity (23) of the air release cavity (26).

5. The device of claim 1, wherein, The air charging and air exhausting switching device further comprises a connecting head (4) which is inserted into the air inlet pipe (21) and the air outlet pipe (22).

6. The device of claim 1, wherein, The air charging and air exhausting switching device further comprises a mounting seat (5), and the valve seat (1) is detachably connected to the upper end of the mounting seat (5).

7. The charge, bleed switching device of claim 6, wherein, The switching assembly (3) comprises a wire holder (31), a coil (32), a fixed metal core (33), a movable metal core (34) and a spring (35), the wire holder (31) is arranged on the mounting base (5), the coil (32) is sleeved on the wire holder (31), the fixed metal core (33) is arranged in the lower end of the wire holder (31), the movable metal core (34) is slidably connected in the wire holder (31), and the spring (35) is arranged between the fixed metal core (33) and the movable metal core (34) to drive the movable metal core (34) to abut against the top surface of the first communication cavity (23) or the second communication cavity (24), so that the first communication cavity (23) is communicated with the first communication hole (13) or the second communication cavity (24) is communicated with the second communication hole (14).

8. The charge, bleed switching device of claim 7, wherein, The switching assembly (3) further comprises a sealing gasket (36) sleeved on the upper end of the movable metal core (34).

9. A gas pump characterized by The inflating and exhausting switching device comprises the inflating and exhausting switching device as claimed in any one of claims 1-8.

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