Pump valve integration device

Abstract

The utility model discloses a pump valve integration device which comprises a pump body, a buffering piece, a pressure limiting diaphragm and a pump head. An air supply hole is formed in the upper end of the pump body; a buffering cavity is formed in the lower end of the buffering piece; an air outlet cavity is formed in the upper end of the buffering piece; the upper end of the pump body is tightly connected with the buffering piece, and the air supply hole is located in the buffering cavity. The lower end of the pump head is tightly connected with the buffering piece. An air outlet pipe of the pump head communicates with the air outlet cavity. A lower vent hole, a pressure relief hole and a vent hole are formed in the buffer piece; the lower vent hole and the pressure relief hole are located in the buffer cavity, and the vent hole is located outside the buffer cavity; the pressure limiting diaphragm is arranged in the air outlet cavity; an upper vent hole is formed in the pressure limiting diaphragm above the lower vent hole, and an exhaust hole is formed in the pressure limiting diaphragm above the pressure relief hole and the exhaust hole; a valve element is arranged on the exhaust hole, and the side edge of the valve element is connected with the pressure limiting membrane. An exhaust cavity is formed in the lower end of the pump head; a pressure spring is arranged in the exhaust cavity, and pressure relief is carried out when the air pressure exceeds a pressure limiting value.

Description

Technical Field

[0001] The utility model relates to the technical field of pumps and valves, in particular to a pump and valve integrated device. Background Art

[0002] The car seat comfort system is a humanized design system applied to car seats to improve the riding comfort of drivers and passengers. Among them, the pneumatic system is the most common type of car seat comfort system; in existing car seats, the air pump and the electromagnetic air valve generally exist as independent individuals, and they need to be connected to each other by air paths such as pipelines. By controlling the electromagnetic air valve, the opening and closing of different electromagnetic air valves can be controlled. However, the air pump and the electromagnetic air valve are separated and connected by pipelines, which will lead to large space occupation, and the air path pipeline is prone to gas leakage, falling off and other undesirable problems. In addition, when the pressure is too high, it is easy to cause damage to the air bag. In order to prevent excessive pressure, some pump and valve integrated devices are provided with a pressure-limiting valve body. However, the pressure-limiting valve body on the existing pump and valve integrated device has a complex structure, high installation precision requirements, low production efficiency, and is difficult to meet actual needs. Utility Model Content

[0003] The utility model aims to provide a pump-valve integrated device, which integrates a valve core and a sealing gasket into an elastic pressure-limiting diaphragm. When the gas pressure in the buffer chamber does not exceed the pressure limit value, the compression spring presses the valve core tightly against the pressure relief hole. When the gas pressure in the buffer chamber exceeds the pressure limit value, the gas pressure pushes the valve core upward, and the excess gas can enter the exhaust chamber from the pressure relief hole or be discharged from the exhaust hole and the air diffusion hole in turn. The utility model has a simple structure and is easy to install, which can ensure that the pump body inflation works under the rated air pressure.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A pump-valve integrated device comprises a pump body, a buffer, a pressure-limiting diaphragm and a pump head; a plurality of air supply holes are arranged on the upper end of the pump body; a buffer cavity is arranged on the lower end of the buffer, and an air outlet cavity is arranged on the upper end of the buffer; the upper end of the pump body is tightly connected to the buffer, and the air supply hole is located in the buffer cavity, and gas is passed into the buffer cavity through the pump body; the lower end of the pump head is tightly connected to the buffer, and the air outlet pipe of the pump head is connected to the air outlet cavity; a lower air vent, a pressure relief hole and an air diffusion hole are arranged on the buffer; the lower air vent and the pressure relief hole are located in the buffer cavity, and the air diffusion hole is located in the buffer cavity Outside the punching cavity; the pressure-limiting diaphragm is arranged in the air outlet cavity; an upper air vent is arranged on the pressure-limiting diaphragm above the lower air vent, and an exhaust hole is arranged on the pressure-limiting diaphragm above the pressure relief hole and the air diffusion hole; a valve core is arranged on the exhaust hole, and the side of the valve core is connected to the pressure-limiting diaphragm; an exhaust cavity is arranged at the lower end of the pump head, and the lower end of the exhaust cavity is tightly against the pressure-limiting diaphragm at the outer edge of the exhaust hole; a compression spring for pressing the valve core against the pressure relief hole is arranged in the exhaust cavity, and when the air pressure in the buffer cavity exceeds the pressure limiting value, the pressure relief hole opens and discharges excess gas from the air diffusion hole for pressure relief.

[0006] Furthermore, an upper convex portion is provided in the exhaust cavity, and a lower convex portion is provided at the upper end of the valve core; the upper end of the compression spring is sleeved outside the upper convex portion, and the lower end of the compression spring is sleeved outside the lower convex portion.

[0007] Furthermore, the side edge of the valve core is bent upward to form a yielding portion, and the air diffusion hole is kept in a normally open state through the yielding portion.

[0008] Furthermore, at least two positioning holes are arranged on the pressure-limiting diaphragm; at least two positioning rods are fixed to the upper end of the buffer component, and the positioning rods are embedded in the positioning holes.

[0009] Furthermore, the outer edge of the lower end of the pump head is tightly against the pressure-limiting diaphragm.

[0010] Furthermore, there are multiple air outlet pipes.

[0011] Furthermore, a solenoid valve is provided on the air outlet pipe, and the opening or closing of the air outlet pipe is regulated by the solenoid valve.

[0012] After adopting the above technical solution, the utility model has the following beneficial effects:

[0013] 1. The utility model is a pump-valve integrated device, which integrates a valve core and a sealing gasket to form an elastic pressure-limiting diaphragm. When the gas pressure in the buffer chamber does not exceed the pressure limit value, the compression spring presses the valve core tightly against the pressure relief hole. When the gas pressure in the buffer chamber exceeds the pressure limit value, the gas pressure pushes the valve core upward, and the excess gas can enter the exhaust chamber from the pressure relief hole or be discharged from the exhaust hole and the air diffusion hole in turn. The utility model has a simple structure and is easy to install, and can ensure that the pump body works at the rated air pressure when inflated.

[0014] 2. The utility model provides a pump-valve integrated device, in which an upper convex portion is arranged in the exhaust cavity, a lower convex portion is arranged at the upper end of the valve core, the upper end of the compression spring is sleeved outside the upper convex portion, and the lower end of the compression spring is sleeved outside the lower convex portion, so that the compression spring can be installed quickly and accurately, and it is not easy to cause the compression spring to shift sideways.

[0015] 3. The utility model provides a pump-valve integrated device, in which a positioning rod is embedded in a positioning hole, so that the pressure-limiting diaphragm can be quickly and accurately installed on the buffer component, and the side of the valve core is bent upward to form a yielding portion, through which the air diffusion hole can be kept in a normally open state. Even when the valve core is tightly attached to the pressure relief hole, the exhaust chamber, the exhaust hole and the air diffusion hole are kept connected, so that excess gas will not impact the pump head, but will be discharged from the gap outside the buffer chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0017] Figure 2 It is a schematic diagram of the cutaway structure of the utility model;

[0018] Figure 3 It is a schematic diagram of the structure of the pump body and the buffer member of the utility model when they are disassembled;

[0019] Figure 4 It is a bottom view structural diagram of the buffer member, the pressure limiting diaphragm and the pump head of the utility model when they are not connected together;

[0020] Figure 5 It is a schematic diagram of the top view of the structure of the buffer member, the pressure limiting diaphragm and the pump head of the utility model when they are not connected together;

[0021] Figure 6 It is a schematic diagram of the top structure when the pressure-limiting diaphragm of the utility model is installed on the buffer component and the compression spring is not installed.

[0022] The reference numerals in the figure are as follows:

[0023] 1. Pump body; 10. Air supply hole; 2. Buffer; 20. Buffer chamber; 21. Air outlet chamber; 22. Lower air vent; 23. Pressure relief hole; 24. Air diffusion hole; 25. Positioning rod; 3. Pressure limiting diaphragm; 30. Upper air vent; 31. Air exhaust hole; 32. Valve core; 320. Lower convex part; 321. Yield part; 33. Compression spring; 34. Positioning hole; 4. Pump head; 40. Air outlet pipe; 41. Air exhaust chamber; 42. Upper convex part; 43. Solenoid valve. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0025] See also Figures 1 to 6 , a pump-valve integrated device, comprising a pump body 1, a buffer member 2, a pressure-limiting diaphragm 3 and a pump head 4; a plurality of air supply holes 10 are arranged at the upper end of the pump body 1, and the pump body 1 adopts an existing structure for generating gas and supplying gas from the air supply holes 10 to the buffer chamber 20; a buffer chamber 20 is arranged at the lower end of the buffer member 2, and an air outlet chamber 21 is arranged at the upper end of the buffer member 2; the upper end of the pump body 1 is tightly connected to the buffer member 2, and the air supply hole 10 is located in the buffer chamber 20, and the gas is passed into the buffer chamber 20 through the pump body 1; the lower end of the pump head 4 is tightly connected to the buffer member 2, and the air outlet pipe 40 of the pump head 4 is communicated with the air outlet chamber 21; a lower air vent 22, a pressure relief hole 23 and an air diffusion hole 24 are arranged on the buffer member 2; the lower air vent 22 and the pressure relief hole 23 are located in the buffer chamber 20, and the air outlet chamber 21 is connected to the pump body 1; In the buffer chamber 20, the air diffusion hole 24 is located outside the buffer chamber 20; the pressure-limiting diaphragm 3 is arranged in the air outlet cavity 21; an upper air vent 30 is arranged on the pressure-limiting diaphragm 3 above the lower air vent 22, and an exhaust hole 31 is arranged on the pressure-limiting diaphragm 3 above the pressure relief hole 23 and the air diffusion hole 24; a valve core 32 is arranged on the exhaust hole 31, and the side of the valve core 32 is connected to the pressure-limiting diaphragm 3; an exhaust chamber 41 is arranged at the lower end of the pump head 4, and the lower end of the exhaust chamber 41 is tightly against the pressure-limiting diaphragm 3 at the outer edge of the exhaust hole 31; a compression spring 33 for pressing the valve core 32 against the pressure relief hole 23 is arranged in the exhaust chamber 41, and when the air pressure in the buffer chamber 20 exceeds the pressure limit value, the pressure relief hole 23 opens and discharges excess gas from the air diffusion hole 24 for pressure relief.

[0026] like Figure 2 , Figure 4 , Figure 5 and Figure 6 As shown, an upper convex portion 42 is provided in the exhaust cavity 41 , and a lower convex portion 320 is provided at the upper end of the valve core 32 ; the upper end of the compression spring 33 is sleeved outside the upper convex portion 42 , and the lower end of the compression spring 33 is sleeved outside the lower convex portion 320 .

[0027] like Figures 4 to 6 As shown, the side edge of the valve core 32 is bent upward to form a paving portion 321, and the air diffusion hole 24 is in a normally open state through the paving portion 321.

[0028] like Figures 4 to 6 As shown, at least two positioning holes 34 are provided on the pressure-limiting diaphragm 3 ; at least two positioning rods 25 are fixed to the upper end of the buffer member 2 , and the positioning rods 25 are embedded in the positioning holes 34 .

[0029] like Figures 2 to 4As shown, the outer edge of the lower end of the pump head 4 is tightly against the pressure-limiting diaphragm 3 .

[0030] like Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, there are multiple air outlet pipes 40 .

[0031] like Figure 2 As shown, the air outlet pipe 40 is provided with a solenoid valve 43 , and the opening or closing of the air outlet pipe 40 is adjusted by the solenoid valve 43 .

[0032] The above is only a preferred specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A pump-valve integrated device, characterized in that: The pump body (1) comprises a pump body (1), a buffer component (2), a pressure limiting diaphragm (3) and a pump head (4); the upper end of the pump body (1) is provided with a plurality of air supply holes (10); the lower end of the buffer component (2) is provided with a buffer cavity (20), and the upper end of the buffer component (2) is provided with an air outlet cavity (21); the upper end of the pump body (1) is tightly connected to the buffer component (2), and the air supply hole (10) is located in the buffer cavity (20), and gas is passed into the buffer cavity (20) through the pump body (1); the lower end of the pump head (4) is tightly connected to the buffer component (2), and the air outlet pipe (40) of the pump head (4) is connected to the air outlet cavity (21); the buffer component (2) is provided with a lower air vent (22), a pressure relief hole (23) and an air diffusion hole (24); the lower air vent (22) and the pressure relief hole (23) are located in the buffer cavity (20), and the air diffusion hole (24) is located in the buffer cavity ( 20); the pressure-limiting diaphragm (3) is arranged in the air outlet cavity (21); an upper air vent (30) is arranged on the pressure-limiting diaphragm (3) above the lower air vent (22), and an exhaust hole (31) is arranged on the pressure-limiting diaphragm (3) above the pressure relief hole (23) and the air diffusion hole (24); a valve core (32) is arranged on the exhaust hole (31), and the side of the valve core (32) is connected to the pressure-limiting diaphragm (3); the pump An exhaust cavity (41) is provided at the lower end of the head (4), and the lower end of the exhaust cavity (41) is tightly pressed against the pressure-limiting diaphragm (3) at the outer edge of the exhaust hole (31); a compression spring (33) is provided in the exhaust cavity (41) for pressing the valve core (32) against the pressure relief hole (23); when the air pressure in the buffer cavity (20) exceeds the pressure limit value, the pressure relief hole (23) opens and discharges excess gas from the air diffusion hole (24) to relieve pressure.

2. A pump-valve integrated device as claimed in claim 1, characterized in that: An upper convex portion (42) is arranged in the exhaust cavity (41), and a lower convex portion (320) is arranged at the upper end of the valve core (32); the upper end of the compression spring (33) is sleeved outside the upper convex portion (42), and the lower end of the compression spring (33) is sleeved outside the lower convex portion (320).

3. A pump-valve integrated device as claimed in claim 1, characterized in that: The side edge of the valve core (32) is bent upward to form a clearance portion (321), and the air diffusion hole (24) is placed in a normally open state through the clearance portion (321).

4. A pump-valve integrated device as claimed in claim 1, characterized in that: At least two positioning holes (34) are provided on the pressure-limiting diaphragm (3); at least two positioning rods (25) are fixed to the upper end of the buffer component (2), and the positioning rods (25) are embedded in the positioning holes (34).

5. A pump-valve integrated device as claimed in claim 1, characterized in that: The outer edge of the lower end of the pump head (4) is tightly pressed against the pressure-limiting diaphragm (3).

6. A pump-valve integrated device as claimed in claim 1, characterized in that: The number of the air outlet pipes (40) is multiple.

7. A pump-valve integrated device as claimed in claim 1, characterized in that: The air outlet pipe (40) is provided with an electromagnetic valve (43), and the opening or closing of the air outlet pipe (40) is regulated by the electromagnetic valve (43).

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