Novel double-pump-head quick-assembly air pump

By using a new type of dual-pump head quick-installation air pump in a car seat air pump and connecting two pump heads with a force transmission component, the problem that a single motor cannot meet the demand for large gas flow is solved, and an efficient and low-noise air pump design is achieved.

CN119664631APending Publication Date: 2025-03-21ND AUTOMOTIVE SYST CO LTD
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Patent Information

Application Number
CN202510134283.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-02-07
Publication Date
2025-03-21

AI Technical Summary

Technical Problem

In the scenario where existing car seat air pumps require large gas flow, a single motor cannot meet the demand, resulting in an increase in the pump head volume or an increase in the motor output power, which will increase noise and installation difficulty.

Method used

A new type of air pump is quickly installed with a dual pump head, including one pump body and two pump heads. The two pump heads are connected through a force transmission assembly, and the motor assembly in the same pump body is driven by a motor assembly to realize the function of the dual pump heads working simultaneously.

Benefits of technology

It improves the working efficiency of the air pump, is suitable for application scenarios that require a large gas flow, reduces noise and installation difficulty, and is designed through the quick-installation interface to facilitate maintenance and replacement of components.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

The invention relates to a novel double-pump-head quick-assembly air pump, which belongs to the field of automobile seats and specifically comprises a pump body and two pump heads, one end of each pump head is provided with an air outlet, and the other end of each pump head is provided with an insertion port connected with the pump body; an air inlet is further formed in the side face of the pump head, a motor assembly is arranged in the pump body, and the motor assembly is provided with two output shafts matched with the corresponding insertion openings; the insertion port is connected with the output shaft through a force transmission assembly, and the force transmission assembly is used for pumping air between the air outlet and the air inlet; by arranging the structure comprising one pump body and the two pump heads, the function of the double pump heads is achieved, air pumping operation can be conducted at the same time under driving of the same pump body, the working efficiency is improved, the force transmission assembly is used for connection, the function that the double pump heads work at the same time for air pumping is achieved, the air pumping efficiency can be improved, and the service life of the pump is prolonged. And meanwhile, the pump head and the pump body are convenient to assemble and disassemble due to the design of the quick-assembly insertion port, and parts are convenient to maintain and replace.
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Description

Technical Field

[0001] The invention relates to the technical field of automobile seats, in particular to an air pump used in automobile seat comfort system products. Background Art

[0002] In the prior art, one motor drives one pump head to complete the air supply. When the air supply flow is insufficient and the flow needs to be increased, it is usually done by increasing the volume of the pump head or increasing the motor output power. In this way, due to the space limitation of the seat environment, the increase in the volume of the pump head cannot meet the design and installation requirements, and the increase in the motor output power will also lead to a significant increase in noise. Summary of the invention

[0003] In order to solve the problems in the related art, the present invention provides a new type of double pump head quick-install air pump, which solves the problem that a single motor cannot be used in large gas flow scenarios.

[0004] In order to solve the above problems, the following technical solutions are provided:

[0005] The dual-pump-head quick-install new air pump of the present invention comprises a pump body and two pump heads, wherein one end of the pump head has an air outlet, and the other end has a plug interface connected to the pump body; the side of the pump head also has an air inlet, and the pump body has a motor assembly, and the motor assembly has two output shafts adapted to the corresponding plug interfaces; the plug interface and the output shaft are connected by a force transmission assembly, and the force transmission assembly is used to pump air between the air outlet and the air inlet.

[0006] By setting up a structure including a pump body and two pump heads, the function of dual pump heads is realized, and the pumping operation can be performed simultaneously under the drive of the same pump body, which improves the working efficiency and is suitable for application scenarios that require a large gas flow rate. And by connecting the force transmission components, the dual pump heads can work simultaneously to pump gas, which can improve the efficiency of pumping gas and meet some application scenarios with high requirements for gas delivery. At the same time, the quick-install plug-in interface design facilitates the assembly and disassembly of the pump head and the pump body, and is convenient for maintenance and replacement of parts.

[0007] The pump head includes a pump cover, a partition, a leather cup and a bottom shell. The mouth of the leather cup is tightly against the partition, and the partition is provided with an air inlet hole and an exhaust hole located in the leather cup. Both the air inlet hole and the exhaust hole are provided with a one-way valve. The middle part of the pump cover is surrounded by an exhaust cavity by a partition, and the side walls of the pump cover and the partition are surrounded by an air inlet cavity. The exhaust cavity is connected with the air outlet. The pump head is provided with an air inlet channel connecting the air inlet and the air inlet cavity; the air inlet hole is connected with the air inlet cavity, and the exhaust hole is connected with the exhaust cavity; an eccentric wheel is provided in the bottom shell, and the eccentric wheel is connected to the bowl head of the leather cup. The force transmission assembly includes a connecting rod plate connected to the output shaft of the motor assembly and a connecting shaft provided on the connecting rod plate, and the connecting shaft is connected to the eccentric wheel in power.

[0008] The motor and the leather cup are cleverly connected through the force transmission component. The eccentric wheel drives the leather cup to move regularly, efficiently converting power, allowing the pump head to work stably based on the motor power, adapt to different working conditions, deliver stable gas, and enhance reliability and adaptability.

[0009] The pump body includes a pump casing, a bracket plate is installed in the pump casing, a motor assembly is installed on the bracket plate, the motor assembly includes a connecting shaft, a stator assembly and a rotor assembly, the stator assembly is fixedly connected to the pump casing, the connecting shaft is rotatably installed on the stator assembly, the rotor assembly is fixedly connected to one end of the connecting shaft, and the rotor assembly is sleeved on the stator assembly; the two ends of the connecting shaft serve as two output shafts of the pump body.

[0010] A bracket plate is installed in the pump housing to support the motor assembly and ensure the stable installation of the motor assembly. The stator assembly is fixedly connected to the pump housing to ensure the stability of the motor during operation, and the connecting shaft is rotatably installed on the stator assembly, and the rotor assembly is fixedly connected to one end of the connecting shaft, so that the motor can effectively convert electrical energy into mechanical energy, drive the connecting shaft to rotate, and then realize the pumping function through the force transmission component.

[0011] The rotor assembly includes a rotor housing and a rotor coil, and the stator assembly includes a stator housing and a stator coil. The rotor housing is in a cap shape, and the rotor coil is fixedly mounted on the inner wall of the rotor housing. A shaft connecting piece is installed at the center of the rotor housing, and the shaft connecting piece is circumferentially fixedly connected to the connecting shaft. The stator housing is a T-shaped structure and an shaft hole is opened through the center of the stator housing. The stator coil is fixedly sleeved on the shaft sleeve and inserted into the rotor coil through the shaft sleeve, and the connecting shaft is installed in the shaft hole through a bearing.

[0012] The rotor housing is in the shape of a cap and the rotor coil is fixed on its inner wall. The shaft connector is circumferentially fixedly connected to the connecting shaft, ensuring that the rotor assembly can drive the connecting shaft to rotate synchronously when rotating. The stator housing adopts a T-shaped structure and the stator coil is inserted into the rotor coil through a sleeve, ensuring the magnetic field interaction between the stator and the rotor, thereby realizing the normal operation of the motor.

[0013] The shaft connecting piece is a clamping block, a limiting hole is provided at the center of the clamping block, a limiting surface connected to the limiting hole is provided on the connecting shaft, and the connecting shaft is connected to the limiting hole through the limiting surface so that the connecting shaft and the clamping block are circumferentially fixedly connected; the limiting hole is square, triangular or diamond-shaped.

[0014] By adopting a clamping block as a shaft connecting piece and arranging a limiting surface on the connecting shaft to connect with the limiting hole of the clamping block, a circumferential fixed connection between the connecting shaft and the clamping block is achieved, ensuring that the rotor assembly can accurately drive the connecting shaft to rotate during rotation, thereby improving the transmission efficiency and reliability of the motor; the limiting hole adopts a non-circular shape such as square, triangle or diamond, which can better cooperate with the limiting surface on the connecting shaft, prevent relative rotation between the connecting shaft and the clamping block, and further improve the transmission accuracy and stability of the motor.

[0015] The pump cover is provided with a pressure relief port, the pressure relief port is communicated with the exhaust chamber, and a pressure relief valve is also provided on the pressure relief port.

[0016] A pressure relief port is provided on the pump cover, and a pressure relief valve is provided on the pressure relief port. When the gas pressure output by the air pump exceeds a certain threshold, the pressure relief valve can automatically open to relieve the pressure to avoid damage to the air pump or related components such as connected pipes due to excessive pressure, thereby protecting the overall system of the air pump and ensuring safety in use. At the same time, it can also enable the air pump to work more stably under different working conditions.

[0017] The moving part of the bearing inside the shaft hole abuts against the clamping block, a limiting block is arranged on the inner wall of the pump housing, one disc-shaped end of the stator housing is clamped with the limiting block, and the limiting block is in the shape of an inverted triangle.

[0018] The moving part of the bearing inside the shaft hole abuts against the block, which can support the rotation of the block and the rotor assembly and reduce friction and wear. The inverted triangle stopper on the inner wall of the pump housing is clamped with the disc-shaped end of the stator housing, which can effectively fix the stator assembly to prevent it from moving during the operation of the motor and ensure the normal operation of the motor.

[0019] The pump body and the pump head are connected by a clamping structure, and the clamping structure includes a clamp arranged on the pump head plug interface, and the edges of the bracket plate and the disc-shaped part of the rotor shell are provided with clamping grooves adapted to the corresponding clamps; a threaded hole is provided in the center of the rotor shell, and one end of the clamp block has a threaded head connected to the threaded hole.

[0020] The pump body and the pump head are connected by a card-connecting structure. The clips on the pump head plug interface are adapted to the bracket plate and the card grooves on the edge of the disc-shaped part of the rotor shell, so that the pump body and the pump head can be quickly connected and disassembled, which facilitates the installation, maintenance and replacement of the air pump. A threaded hole is opened in the center of the rotor shell, and one end of the card block has a threaded head connected to the threaded hole. This connection method can realize the rapid disassembly and replacement of the card block, and can further ensure the firmness of the connection between the card block and the rotor shell, prevent the card block from loosening during the operation of the motor, and ensure the reliability and stability of the motor.

[0021] The motor assembly further includes a circuit board, which is fixed on the stator housing and is electrically connected to the stator coil.

[0022] The circuit board is fixed on the stator housing and electrically connected to the stator coil, so that the operation of the motor can be conveniently controlled and adjusted, ensuring that the motor can work stably and efficiently under different working conditions.

[0023] Buckle grooves are provided on the pump cover and the bottom shell, and strip grooves connected to the buckle grooves are provided on the outer sides of the partition plate and the leather bowl part. The pump cover, the leather bowl part, the piston part and the bottom shell are fixedly connected by a clamp with a hook.

[0024] The pump head adopts a structure in which the pump cover, partition, leather bowl and bottom shell are snapped together in sequence, and they are fixedly connected by a clamp with a hook. This structural design facilitates the assembly and disassembly of the pump head, while ensuring the sealing and stability of the pump head during operation.

[0025] The above solution has the following advantages:

[0026] 1. The dual-pump head quick-install new air pump of this scheme includes a pump body and two pump heads, one end of the pump head has an air outlet, and the other end has a plug interface connected to the pump body; the side of the pump head also has an air inlet, and the pump body has a motor assembly, and the motor assembly has two output shafts adapted to the corresponding plug interfaces; the plug interface and the output shaft are connected by a force transmission assembly, and the force transmission assembly is used to pump air between the air outlet and the air inlet; by setting a structure including a pump body and two pump heads, the function of the dual pump heads is realized, and the pumping operation can be performed simultaneously under the drive of the same pump body, which improves the working efficiency and is suitable for application scenarios that require a large gas flow rate. And by connecting with the force transmission assembly, the function of the dual pump heads working simultaneously to pump air is realized, which can improve the efficiency of pumping air and meet some application scenarios with high requirements for gas delivery. At the same time, the quick-install plug interface design facilitates the assembly and disassembly of the pump head and the pump body, and is convenient for maintenance and replacement of parts.

[0027] 2. The pump head comprises a pump cover, a partition, a leather cup and a bottom shell. The mouth of the leather cup is tightly against the partition, and an air inlet hole and an exhaust hole are provided on the partition, both of which are provided with a one-way valve. An exhaust cavity is surrounded by a partition in the middle of the pump cover, and an air inlet cavity is surrounded by the side walls of the pump cover and the partition. The exhaust cavity is connected with the air outlet. An air inlet passage connecting the air inlet and the air inlet cavity is provided on the pump head; the air inlet is connected with the air inlet cavity, and the exhaust hole is connected with the exhaust cavity; an eccentric wheel is provided in the bottom shell, and the eccentric wheel is connected with the bowl head of the leather cup; the force transmission component comprises a connecting rod plate connected with the output shaft of the motor component and a connecting shaft provided on the connecting rod plate, and the connecting shaft is connected with the eccentric wheel power; the motor and the leather cup are cleverly connected by the force transmission component, and the eccentric wheel drives the leather cup to move regularly, and the power is efficiently converted, so that the pump head can work stably according to the power of the motor, adapt to different working conditions, transport stable gas, and enhance reliability and adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to make the content of the present invention more clearly understood, the present invention is further described in detail below according to specific embodiments of the present invention in conjunction with the accompanying drawings, wherein:

[0029] Figure 1 It is a structural schematic diagram of a new type of quick-install air pump with dual pump heads provided in the first embodiment of the present application;

[0030] Figure 2 is a cross-sectional schematic diagram of a pump body provided in the first embodiment of the present application;

[0031] Figure 3 It is an exploded schematic diagram of a new type of quick-install air pump with dual pump heads provided in the first embodiment of the present application;

[0032] Figure 4 is a schematic structural diagram of a pump body provided in the first embodiment of the present application;

[0033] Figure 5 is a three-dimensional diagram of the air pump provided in the first embodiment of the present application in a cross-sectional state;

[0034] Figure 6 is a three-dimensional diagram of the air pump provided by the first embodiment of the present application in another cross-sectional state;

[0035] Figure 7 is a schematic structural diagram of an air pump provided in a second embodiment of the present application;

[0036] Figure 8 It is a schematic diagram of the structure of the pump head provided in the second embodiment of the present application.

[0037] Figure numerals: 1. pump body; 2. pump head; 201. pump cover; 2011. air outlet; 2012. pressure relief port; 2013. air inlet; 202. partition; 203. leather cup; 204. bottom shell; 3. output shaft; 4. rotor housing; 5. bracket plate; 6. rotor coil; 7. stator coil; 8. clamp; 9. bearing A; 10. bearing B; 11. stator housing; 12. clamp; 13. clamping groove; 14. limit block; 15. pressure relief valve; 16. clamp; 17. connecting rod plate; 18. connecting shaft; 19. eccentric wheel; 20. air inlet channel; 21. air inlet chamber; 22. exhaust chamber; 23. air inlet hole; 24. exhaust hole. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] like Figure 1 As shown, the first embodiment of the dual-pump head quick-install new air pump includes a pump body 1 and two pump heads 2, one end of the pump head 2 has an air outlet 2011, and the other end has a plug interface connected to the pump body 1; the side of the pump head 2 also has an air inlet 2013, and the pump body 1 has a motor assembly, and the motor assembly has two output shafts 3 adapted to the corresponding plug interfaces; the plug interface and the output shaft 3 are connected by a force transmission component, and the force transmission component is used to pump air between the air outlet 2011 and the air inlet 2013; this embodiment realizes the function of the dual pump heads 2 by adopting a design of a pump body 1 and two pump heads 2, and can simultaneously perform air pumping operations under the drive of the same pump body 1, thereby improving work efficiency and being suitable for application scenarios requiring a larger gas flow rate.

[0040] Specifically, Figure 2 As shown, the pump body 1 includes a pump housing, a bracket plate 5 is installed in the pump housing, and a motor assembly is installed on the bracket plate 5. The motor assembly includes a connecting shaft 3, a stator assembly, a rotor assembly and a circuit board. The stator assembly is fixedly connected to the pump housing, the connecting shaft 3 is rotatably installed on the stator assembly, the rotor assembly is fixedly connected to one end of the connecting shaft 3, and the rotor assembly is sleeved on the stator assembly; the two ends of the connecting shaft 3 serve as two output shafts of the pump body 1; the bracket plate 5 is installed in the pump housing for installing the motor assembly to ensure the stable installation of the motor assembly. The stator assembly is fixedly connected to the pump housing to ensure the stability of the motor during operation, and the connecting shaft 3 is rotatably installed on the stator assembly, and the rotor assembly is fixedly connected to one end of the connecting shaft 3, so that the motor can effectively convert electrical energy into mechanical energy, drive the connecting shaft 3 to rotate, and then realize the pumping function through the force transmission assembly; at the same time, the circuit board is fixed on the stator housing 11, and the circuit board is electrically connected to the stator coil 7. The circuit board is fixed on the stator housing 11 and electrically connected to the stator coil 7, so that the operation of the motor can be conveniently controlled and adjusted, ensuring that the motor can work stably and efficiently under different working conditions.

[0041] The rotor assembly includes a rotor housing 4 and a rotor coil 6, and the stator assembly includes a stator housing 11 and a stator coil 7. The rotor housing 4 is in the shape of a cap, and the rotor coil 6 is fixedly mounted on the inner wall of the rotor housing 4. A shaft connecting piece is installed in the center of the rotor housing 4, and the shaft connecting piece is circumferentially fixedly connected to the connecting shaft 3; the stator housing 11 is a T-shaped structure and a shaft hole is opened through the center of the stator housing 11. The stator coil 7 is fixedly sleeved on the sleeve and inserted into the rotor coil 6 through the sleeve, and the connecting shaft 3 is installed in the shaft hole through bearings A9 and B10; the rotor housing 4 is in the shape of a cap and the rotor coil 6 is fixed on its inner wall. The shaft connecting piece is circumferentially fixedly connected to the connecting shaft 3, ensuring that the rotor assembly can drive the connecting shaft 3 to rotate synchronously when rotating. The stator housing 11 adopts a T-shaped structure and the stator coil 7 is inserted into the rotor coil 6 through the sleeve, ensuring the interaction of the magnetic fields between the stator and the rotor, thereby realizing the normal operation of the motor.

[0042] In this embodiment, the shaft connecting member is a clamp 8, a limiting hole is provided at the center of the clamp 8, a limiting surface connected to the limiting hole is provided on the connecting shaft 3, and the connecting shaft 3 is connected to the limiting hole through the limiting surface so that the connecting shaft 3 and the clamp 8 are circumferentially fixedly connected; by using the clamp 8 as the shaft connecting member, and setting the limiting surface on the connecting shaft 3 to connect with the limiting hole of the clamp 8, the circumferential fixed connection between the connecting shaft 3 and the clamp 8 is achieved, ensuring that the rotor assembly can accurately drive the connecting shaft 3 to rotate when rotating, thereby improving the transmission efficiency and reliability of the motor. In addition, the limiting hole is square, triangular or diamond-shaped; the limiting hole is square, triangular or diamond-shaped or other non-circular shapes, which can better cooperate with the limiting surface on the connecting shaft 3, prevent the connecting shaft 3 and the clamp 8 from relative rotation, and further improve the transmission accuracy and stability of the motor.

[0043] Furthermore, the moving part of the bearing A9 inside the shaft hole abuts against the block 8, a stopper 14 is provided on the inner wall of the pump housing, and the disc-shaped end of the stator housing 11 is engaged with the stopper 14, and the stopper 14 is an inverted triangle. The moving part of the bearing inside the shaft hole abuts against the block 8, which can support the rotation of the block 8 and the rotor assembly, reducing friction and wear. The inverted triangle stopper 14 on the inner wall of the pump housing is engaged with the disc-shaped end of the stator housing 11, which can effectively fix the stator assembly to prevent it from displacement during the operation of the motor, thereby ensuring the normal operation of the motor.

[0044] like Figure 3 and 4As shown, the pump body 1 and the pump head 2 are connected by a snap-fit ​​structure, which includes a clip 12 provided on the plug-in interface of the pump head 2, and the edges of the bracket plate 5 and the disc-shaped portion of the rotor housing 4 are provided with slots adapted to the corresponding clips 12. The pump body 1 and the pump head 2 are connected by a snap-fit ​​structure, and the clip 12 provided on the plug-in interface of the pump head 2 is adapted to the slots on the bracket plate 5 and the disc-shaped portion edge of the rotor housing 4, so that the pump body 1 and the pump head 2 can be quickly connected and disassembled, which facilitates the installation, maintenance and replacement of the air pump.

[0045] like Figure 5 and 6 As shown, the pump head 2 includes a pump cover 201, a partition 202, a leather cup portion 203 and a bottom shell 204. The mouth of the leather cup portion 203 is tightly against the partition 202, and the partition 202 is provided with an air inlet 23 and an air outlet 24 located in the leather cup portion 203. Both the air inlet 23 and the air outlet 24 are provided with a one-way valve. The middle part of the pump cover 201 is surrounded by an air outlet cavity 22 through a partition. The side walls of the pump cover 201 and the partition are surrounded by an air inlet cavity 21. The air outlet cavity 22 is connected to the air outlet cavity 21. The air port 2011 is connected, and the pump head 2 is provided with an air inlet channel 20 connecting the air inlet 2013 and the air inlet chamber 21; the air inlet hole 23 is connected with the air inlet chamber 21, and the air outlet hole 24 is connected with the air outlet chamber 22; an eccentric wheel 19 is arranged in the bottom shell 204, and the eccentric wheel 19 is connected with the bowl head of the leather cup part 203, and the force transmission component includes a connecting rod plate 17 connected with the output shaft 3 of the motor component and a connecting shaft 18 arranged on the connecting rod plate 17, and the connecting shaft 18 is connected with the eccentric wheel 19 in power. The motor and the leather cup part 203 are cleverly connected by the force transmission component, and the eccentric wheel 19 drives the leather cup part 203 to move regularly, and the power is efficiently converted, so that the pump head 2 can work stably according to the power of the motor, adapt to different working conditions, transport stable gas, and enhance reliability and adaptability.

[0046] Secondly, buckle grooves are provided on the pump cover 201 and the bottom shell 204, and strip grooves connected to the buckle grooves are provided on the outer sides of the partition 202 and the leather cup 203, and the pump cover 201, the leather cup 203, the piston part and the bottom shell 204 are fixedly connected by the clamp 16 with a hook. The pump head 2 adopts a structure in which the pump cover 201, the partition 202, the leather cup 203 and the bottom shell 204 are sequentially engaged, and they are fixedly connected by the clamp 16 with a hook. This structural design facilitates the assembly and disassembly of the pump head 2, and at the same time ensures the sealing and stability of the pump head 2 during operation.

[0047] In this embodiment, a threaded hole is provided at the center of the rotor housing 4, and one end of the clamping block 8 has a threaded head connected to the threaded hole. A threaded hole is provided at the center of the rotor housing 4, and one end of the clamping block 8 has a threaded head connected to the threaded hole. This connection method can realize the rapid disassembly and replacement of the clamping block 8, and can further ensure the firmness of the connection between the clamping block 8 and the rotor housing 4, prevent the clamping block 8 from loosening during the operation of the motor, and ensure the reliability and stability of the motor.

[0048] For ease of understanding, the pump head 2 of this embodiment can refer to the pump head 2 in the air pump with publication number CN220705904U. It can be seen that a piston part 203 is provided in the bottom shell 204, and the piston part 203 includes a connecting rod plate and a plurality of piston rods arranged thereon, and an eccentric wheel connected to the connecting shaft 3. The eccentric wheel is placed in the bottom shell 204, and the cup part is installed on the top of the piston drive assembly. The cup part has a plurality of matching cups, and the pump cover 201 is installed on the top of the cup group; the working process of the motor part is: after the stator coil 7 is energized, a rotating magnetic field is generated. Since the stator is connected to the connecting shaft 3, the rotor starts to rotate, and the connecting shaft 3 rotates accordingly. Since the eccentric wheel is connected to the connecting shaft 3, it will drive the eccentric wheel to rotate. The specific working process of the pump head 2 will not be repeated here.

[0049] like Figure 7 and 8 As shown, as the second embodiment of the double pump head quick-install new air pump, compared with the first embodiment, the pump cover 201 of the two pump heads 2 of this embodiment is provided with a pressure relief port 2012, the pressure relief port 2012 is connected to the exhaust chamber 22, and a pressure relief valve 15 is also provided on the pressure relief port 2012. When the pump head 2 pumps the gas from the gas outlet 2011 to the pressure relief port 2012, the pressure of the gas outlet is controlled by the pressure relief valve 15; when the gas pressure output by the air pump exceeds a certain threshold, the pressure relief valve 15 can automatically open to release the pressure, so as to avoid damage to the air pump or the connected pipelines and other related components due to excessive pressure, play a role in protecting the overall system of the air pump and ensuring safety in use, and also enable the air pump to work more stably under different working conditions. The model and size of the pressure relief valve 15 can be selected according to the shape of the specific pressure relief port 2012.

Claims

1. A new type of double pump head quick-install air pump, characterized in that: The invention comprises a pump body (1) and two pump heads (2), wherein one end of the pump head (2) has an air outlet (2011) and the other end has a plug interface connected to the pump body (1); the side of the pump head (2) also has an air inlet (2013); the pump body (1) has a motor assembly inside, and the motor assembly has two output shafts (3) adapted to the corresponding plug interfaces; the plug interface and the output shafts (3) are connected via a force transmission assembly, and the force transmission assembly is used to pump air between the air outlet (2011) and the air inlet (2013).

2. The new double-pump-head quick-install air pump according to claim 1 is characterized in that: The pump head (2) comprises a pump cover (201), a partition (202), a leather cup portion (203) and a bottom shell (204); the mouth of the leather cup portion (203) is tightly against the partition (202); an air inlet (23) and an air outlet (24) are provided on the partition (202) and are located in the leather cup portion (203); both the air inlet (23) and the air outlet (24) are provided with a one-way valve; a middle portion of the pump cover (201) is surrounded by an air outlet cavity (22) through a partition; the side walls of the pump cover (201) and the partition are surrounded by an air inlet cavity (21); the air outlet cavity (22) and the air outlet (201) are connected to each other. 1), the pump head (2) is provided with an air inlet (2013) and an air inlet chamber (21); the air inlet hole (23) is in communication with the air inlet chamber (21), and the air outlet hole (24) is in communication with the air outlet chamber (22); an eccentric wheel (19) is provided in the bottom shell (204), the eccentric wheel (19) is connected to the cup head of the leather cup portion (203), the force transmission component comprises a connecting rod plate (17) connected to the output shaft (3) of the motor component and a connecting shaft (18) provided on the connecting rod plate (17), and the connecting shaft (18) is in power connection with the eccentric wheel (19).

3. The new type of double pump head quick-install air pump according to claim 2, characterized in that: The pump body (1) comprises a pump casing, a support plate (5) is installed in the pump casing, a motor assembly is installed on the support plate (5), the motor assembly comprises a connecting shaft (18), a stator assembly and a rotor assembly, the stator assembly is fixedly connected to the pump casing, the connecting shaft (18) is rotatably mounted on the stator assembly, the rotor assembly is fixedly connected to one end of the connecting shaft (18), and the rotor assembly is sleeved on the stator assembly; the two ends of the connecting shaft (18) serve as two output shafts (3) of the pump body (1).

4. The new double-pump-head quick-install air pump according to claim 3 is characterized in that: The rotor assembly comprises a rotor housing (4) and a rotor coil (6); the stator assembly comprises a stator housing (11) and a stator coil (7); the rotor housing (4) is in the shape of a cap; the rotor coil (6) is fixedly mounted on the inner wall of the rotor housing (4); a shaft connecting piece is mounted at the center of the rotor housing (4); the shaft connecting piece is circumferentially fixedly connected to a connecting shaft (18); the stator housing (11) is in a T-shaped structure; a shaft hole is formed through the center of the stator housing (11); the stator coil (7) is fixedly sleeved on the shaft sleeve and inserted into the rotor coil (6) through the shaft sleeve; and the connecting shaft (18) is mounted in the shaft hole through a bearing.

5. The new double-pump-head quick-install air pump according to claim 4 is characterized in that: The shaft connecting member is a clamping block (8), a limiting hole is provided at the center of the clamping block (8), a limiting surface connected to the limiting hole is provided on the connecting shaft (18), the connecting shaft (18) is connected to the limiting hole via the limiting surface so that the connecting shaft (18) and the clamping block (8) are circumferentially fixedly connected, and the limiting hole is square, triangular or rhombus-shaped.

6. The new type of double pump head quick-install air pump according to any one of claims 2 to 5, characterized in that: The pump cover (201) is provided with a pressure relief port (2012), the pressure relief port (2012) is in communication with the exhaust chamber (22), and the pressure relief port (2012) is also provided with a pressure relief valve (15).

7. The new type of double pump head quick-install air pump according to claim 6, characterized in that: The moving part of the bearing inside the shaft hole abuts against the clamping block (8), a limit block (14) is provided on the inner wall of the pump housing, a disc-shaped end of the stator housing (11) is clamped with the limit block (14), and the limit block (14) is an inverted triangle.

8. The new type of double pump head quick-install air pump according to claim 7, characterized in that: The pump body (1) and the pump head (2) are connected via a clamping structure, wherein the clamping structure comprises a clamp (12) provided on a plug-in interface of the pump head (2); edges of the support plate (5) and the disc-shaped portion of the rotor housing (4) are provided with clamping grooves (13) adapted to the corresponding clamp (12); a threaded hole is provided at the center of the rotor housing (4), and one end of the clamping block (8) has a threaded head connected to the threaded hole.

9. The new type of double pump head quick-install air pump according to claim 7, characterized in that: Buckle grooves are provided on the pump cover (201) and the bottom shell (204); strip grooves communicating with the buckle grooves are provided on the outer sides of the partition plate (202) and the leather cup portion (203); and the pump cover (201), the leather cup portion (203), the piston portion and the bottom shell (204) are fixedly connected by a clamp (16) with a hook.

10. The new type of double pump head quick-install air pump according to claim 2, characterized in that: The motor assembly also includes a circuit board, which is fixed on the stator housing (11) and is electrically connected to the stator coil (7).

Citation Information

Patent Citations

  • Air pump

    CN220705904U

  • Outer rotor DC brushless motor

    CN102075050A

  • Double-head diaphragm pump and breast pump with same

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