Seat air pump for providing air source for air spring of automobile seat

Abstract

The utility model relates to a seat air pump for providing an air source for an air spring of an automobile seat, which comprises a compression cylinder body, a crankshaft driving chamber and an air cylinder chamber which are distributed from top to bottom are arranged in the compression cylinder body, the inner wall of the air cylinder chamber is of a cylindrical structure with a smooth mirror surface structure, and the crankshaft driving chamber is communicated with the air cylinder chamber; the air pump assembly comprises a piston body and a connecting rod which are arranged in the air cylinder cavity. The input motor is connected into the crankshaft driving cavity and is in transmission connection with a connecting rod of the air pump assembly; the output end is arranged at the upper part of the cylinder chamber; the air inlet end cover plate assembly is arranged on the outer side of the crankshaft driving cavity and used for filtering entering air. The assembly process is simplified, the product performance consistency is improved, and the part cost and the assembly cost are reduced.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts, and in particular to a seat air pump that provides an air source for automotive seat air springs. Background Technology

[0002] With the development of the automotive industry, driving comfort is receiving increasing attention, and drivers and passengers are constantly raising their demands for vehicle comfort and safety. Seat comfort is crucial to driving comfort. Air-suspension suspension seats, through the adjustment of air springs and airbags, can significantly reduce vibrations and impacts during vehicle operation, improving the riding experience. The seat air pump, as the core component providing the air source for the air springs, directly affects the seat's shock absorption effect and passenger comfort. However, existing seat air pumps still have shortcomings in terms of efficiency, noise, and lifespan, making it difficult to meet the high performance requirements of high-end models and commercial vehicles. Summary of the Invention

[0003] In order to overcome at least one of the problems mentioned above, this utility model provides a seat air pump that provides an air source for the air spring of a car seat. The compression cylinder integrates the crankshaft drive chamber and the cylinder chamber, which simplifies the assembly process, improves the consistency of product performance, and reduces the cost of parts and assembly.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a seat air pump that provides an air source for car seat air springs, comprising:

[0005] The compression cylinder body includes a crankshaft drive chamber and a cylinder chamber distributed from top to bottom. The inner wall of the cylinder chamber is a cylindrical structure with a smooth mirror finish. The crankshaft drive chamber and the cylinder chamber are connected. An air pump assembly is installed inside the crankshaft drive chamber and the cylinder chamber. The air pump assembly includes a piston body and a connecting rod installed in the cylinder chamber. The connecting rod drives the piston body to move up and down. The piston body has a one-way air inlet to compress gas into the upper cavity.

[0006] The input motor is connected to the crankshaft drive chamber and then to the connecting rod drive of the air pump assembly.

[0007] The output end is located at the upper part of the cylinder chamber;

[0008] An intake end cover assembly is disposed outside the crankshaft drive chamber and filters the incoming air. It includes a cylinder cover plate, a filter pad, and a pressure plate. The cylinder cover plate has a concave cavity on its inner side, and the filter pad is disposed in the concave cavity. The lower end of the cylinder cover plate has a first air intake hole. The upper end of the pressure plate has a second air intake hole. Air enters through the first air intake hole and passes through the filter pad and the second air intake hole.

[0009] Preferably, the piston body includes a piston ring seat, a piston valve seat, and a connecting rod seat. The piston valve seat is installed inside the piston ring seat and has a protrusion around its periphery. The inner wall of the piston ring seat is provided with a corresponding stepped groove. The protrusion is engaged with the upper part of the stepped groove, thereby limiting and fixing the lower end of the piston valve seat. The upper end face of the connecting rod seat contacts the piston ring seat and the piston valve seat respectively, supporting the piston ring seat and the piston valve seat. The connecting rod seat is fixedly connected to the piston valve seat.

[0010] Preferably, the stepped groove on the inner wall of the piston ring seat is a two-stage stepped groove, and an annular groove is formed between the protrusion of the piston valve seat and the upper part of the stepped groove, with a ring spring provided in the annular groove.

[0011] Preferably, the connecting rod seat and the piston valve seat are locked together by screws. The piston valve seat has a through hole in the middle for the screw to pass through, and the corresponding part of the connecting rod seat has a screw hole.

[0012] Preferably, the piston valve seat is provided with a plurality of compressed air holes arranged in a ring, and an annular valve plate is provided at the upper end; the annular valve plate covers the compressed air holes, so that the piston valve seat can be filled with air in one direction; a valve plate limiting seat is provided on the upper part of the piston valve seat, and the annular valve plate is sleeved on the valve plate limiting seat.

[0013] Preferably, the outer edge of the piston ring seat is a spherical arc surface that can rotatably contact the inner wall of the cylinder chamber.

[0014] Preferably, the output end includes an output seat, and a one-way output valve seat is provided below the output seat. The one-way output valve seat is sleeved on the end of the cylinder chamber, with a through-hole in the middle. An upper valve plate is provided on the upper part of the one-way output valve seat, covering the through-hole. Multiple extension connecting parts are evenly arranged around the circumference of the upper valve plate, and the ends of the extension connecting parts are connected to the upper end face of the one-way output valve seat. When inflating, the air pressure pushes the upper valve plate upward, and the through-hole of the one-way output valve seat opens. When inflating stops, the upper valve plate is tightly attached to the through-hole of the one-way output valve seat.

[0015] Preferably, a spring is provided between the output seat and the one-way output valve seat. The spring contacts the upper end face of the upper valve plate and provides an elastic thrust to the upper valve plate, so that the upper valve plate is tightly attached to the port of the one-way output valve seat.

[0016] Preferably, the output shaft of the input motor extends into the crankshaft drive chamber, and an eccentric wheel is provided at the end of the output shaft. The eccentric wheel is hinged to the connecting rod, and the connecting rod swings up and down during rotation.

[0017] The beneficial effects of this utility model are as follows: A seat air pump that provides an air source for automotive seat air springs simplifies the assembly process, optimizes the air circuit layout and cylinder chamber design, improves the compression efficiency and response speed of the air pump, and ensures that sufficient air pressure is provided to the seat air springs in a short time. The crankshaft drive chamber and cylinder chamber within the compression cylinder are integrated, improving product performance consistency, reducing parts and assembly costs, decreasing maintenance and replacement costs, and extending the service life of the air pump. It effectively reduces the noise of the air pump during operation, improves the quietness of the vehicle interior environment, enhances the seat's shock absorption effect and passenger comfort, and strengthens the vehicle's market competitiveness. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 This is a schematic diagram of the overall structure of the seat air pump that provides an air source for the air springs of car seats according to the present invention.

[0020] Figure 2 This is a schematic diagram of the cross-sectional structure of the compression cylinder in this invention;

[0021] Figure 3 This is a schematic diagram of the cross-sectional structure of the compression cylinder in operation according to the present invention.

[0022] Figure 4 This is an exploded view of the seat air pump that provides an air source for the air springs of automobile seats according to the present invention.

[0023] Figure 5 This is a cross-sectional structural diagram of the air intake end cover assembly in this invention;

[0024] Figure 6 This is a schematic diagram of the cross-sectional structure of the piston body in this invention. Attached image description:

[0026] 1. Compression cylinder block; 11. Crankshaft drive chamber; 12. Cylinder chamber; 111. Mounting port; 2. Connecting rod; 21. Connecting rod seat; 3. Piston ring seat; 31. Step groove; 32. Piston valve seat; 321. Protrusion; 33. Air compression port; 34. Annular valve plate; 35. Screw; 36. Ring spring; 4. Input motor; 41. Eccentric wheel; 5. Output seat; 51. Rotary output nozzle; 52. Pressure cap; 6. One-way output valve seat; 61. Upper valve plate; 62. Extension connection; 63. Spring; 64. Output valve seat sealing ring; 13. Cylinder cover plate; 131. Cavity; 132. First air inlet; 14. Filter pad; 15. Pressure plate; 151. Second air inlet. Detailed Implementation

[0027] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0029] like Figure 1-4 The image shows a seat air pump that provides an air source for the air springs of a car seat. The compression cylinder 1 has a crankshaft drive chamber 11 and a cylinder chamber 12 distributed from top to bottom. The air pump assembly is installed inside the crankshaft drive chamber 11 and the cylinder chamber 12.

[0030] See Figure 1 , 4 The input motor 4 is connected to the crankshaft drive chamber 11 and is connected to the connecting rod 2 of the air pump assembly.

[0031] See Figure 4 The upper part of the cylinder chamber 12 is the output end, which includes an output seat 5 and a rotary output nozzle 51. The rotary output nozzle 51 is connected to the seat air spring 63 and provides the required gas pressure to the seat air spring 63.

[0032] See Figure 5 The intake end cover assembly is located outside the crankshaft drive chamber 11 and filters the incoming air. It includes a cylinder cover plate 13, a filter pad 14, and a pressure plate 15. A cavity 131 is provided on the inner side of the cylinder cover plate 13, and the filter pad 14 is disposed in the cavity 131. A first air intake hole 132 is disposed on the lower end of the cylinder cover plate 13. A second air intake hole 151 is disposed on the upper end of the pressure plate 15. Air enters through the first air intake hole 132 and passes through the filter pad 14 and the second air intake hole 151.

[0033] The compression cylinder 1 is an integral structure. The crankshaft drive chamber 11 of the compression cylinder 1 has an installation port 111 on the outside for installing the intake end cover assembly. The crankshaft drive chamber 11 and the cylinder chamber 12 are integrally formed by the compression cylinder 1, which simplifies the assembly process, improves the consistency of product performance, and reduces the cost of parts and assembly.

[0034] The air pump assembly includes a piston body and a connecting rod 2; the connecting rod 2 drives the piston body to move up and down, and the piston body has a one-way air inlet to compress gas into the upper cavity.

[0035] Piston body: See Figure 4 , 6 The piston valve seat 3 includes a piston ring seat 3, a piston valve seat 32, and a connecting rod seat 21. The piston valve seat 32 is installed inside the piston ring seat 3. The piston valve seat 32 has a protrusion 321 around its periphery. The inner wall of the piston ring seat 3 is provided with a corresponding stepped groove 31. The protrusion 321 is engaged with the upper part of the stepped groove 31, so that the lower end of the piston valve seat 32 is limited and fixed. The upper end face of the connecting rod seat 21 contacts the piston ring seat 3 and the piston valve seat 32 respectively, supporting the piston ring seat 3 and the piston valve seat 32. The connecting rod seat 21 is fixedly connected to the piston valve seat 32.

[0036] See Figure 6 The connecting rod seat 21 and the piston valve seat 32 are locked together by screws 35. The piston valve seat 32 has a through hole in the middle for the screws 35 to pass through, and the corresponding part of the connecting rod seat 21 has a screw hole.

[0037] See Figure 6 The stepped groove 31 on the inner wall of the piston ring seat 3 has two steps. An annular groove is formed between the protrusion 321 of the piston valve seat 32 and the upper part of the stepped groove 31, and a ring spring 36 is installed in the annular groove. This increases the service life of the piston ring seat 3, and it can maintain stable performance and a long service life even after long-term use.

[0038] Among them, the piston ring seat 3 is made of high wear-resistant and high-performance polytetrafluoroethylene composite material, with an oil-free self-lubricating design, clean airflow and environmental protection.

[0039] In this embodiment, the cylinder chamber 12 is mirror-finished, hardened by anodizing, and then rolled to ensure its smoothness, prevent excessive wear on the piston exterior, reduce seat air pump noise, and increase the performance and lifespan of the seat air pump.

[0040] See Figure 1 , 4 The surface of the compression cylinder 1 has multiple ribs to increase its surface heat dissipation area and effectively reduce the temperature of the seat air pump during operation.

[0041] See Figure 3 , 6The piston valve seat 32 is provided with a plurality of compressed air holes 33 arranged in a ring. An annular valve plate 34 is provided at the upper end of the compressed air holes 33. The annular valve plate 34 covers the compressed air holes 33, allowing the piston valve seat 32 to be unidirectionally inlet, forming the aforementioned unidirectional air inlet. A valve plate limiting seat is provided on the upper part of the piston valve seat 32. The annular valve plate 34 is fitted on the valve plate limiting seat and has a certain amount of movement space. The upper end of the screw 35 has a nut. The outer diameter of the nut is larger than the outer diameter of the valve plate limiting seat and the inner diameter of the annular valve plate 34, limiting the movement space of the valve plate limiting seat.

[0042] Among them, the air compression hole 33 extends downwards and reaches the bottom of the connecting rod seat 21.

[0043] See Figure 3 The outer edge of the piston ring seat 3 is a spherical arc surface, which can be rotatably attached to the inner wall of the cylinder chamber 12.

[0044] See Figure 2 , 3 4. A one-way output valve seat 6 is provided below the output seat 5. The one-way output valve seat 6 is sleeved on the end of the cylinder chamber 12, with a through-hole in the middle and an upper valve plate 61 provided on the upper part, covering the through-hole. Multiple extension connecting parts 62 are evenly arranged around the upper valve plate 61, and the ends of the extension connecting parts 62 are connected to the upper end face of the one-way output valve seat 6. When inflating, the air pressure pushes the upper valve plate 61 to move upward, and the through-hole of the one-way output valve seat 6 opens; when inflating stops, the upper valve plate 61 is tightly attached to the through-hole of the one-way output valve seat 6.

[0045] Furthermore, a spring 63 is provided between the output seat 5 and the one-way output valve seat 6. The spring 63 contacts the upper end face of the upper valve plate 61 and provides elastic thrust to the upper valve plate 61, so that the upper valve plate 61 is tightly attached to the port of the one-way output valve seat 6.

[0046] See Figure 4 An output valve seat sealing ring 64 is provided between the contact surfaces of the one-way output valve seat 6 and the upper valve plate 61. A corresponding annular groove is provided on the upper edge of the one-way output valve seat 6 to install the output valve seat sealing ring 64 and improve the sealing effect.

[0047] See Figure 1 , 4 The output base 5 is also equipped with a pressure cap 52, which has a through hole in the middle. The pressure cap 52 is fixed to the upper end of the compression cylinder 1 by screws 35 at the four corners. The upper side of the output base 5 has a corresponding concave platform, on which the pressure cap 52 is pressed.

[0048] See Figure 3 , 4 The output shaft of the input motor 4 extends into the crankshaft drive chamber 11. An eccentric wheel 41 is provided at the end of the output shaft. The eccentric wheel 41 is hinged to the connecting rod 2. When rotating, the connecting rod 2 swings up and down, so that the piston body at the end of the connecting rod 2 moves up and down.

[0049] See Figure 3 Because the outer edge of the piston ring seat 3 is a spherical arc surface, when the piston ring seat 3 swings with the connecting rod 2, it can rotatably contact the inner wall of the cylinder chamber 12, maintaining a sealed connection. This reduces the noise of the air pump during operation and improves the quietness of the vehicle interior environment.

[0050] In one possible configuration, the end of the connecting rod 2 is hinged to the connecting rod seat 21 and connected by a bearing.

[0051] The seat air pump that provides an air source for car seat air springs according to this utility model has the following advantages:

[0052] Novel structural design: This design is novel, simple in structure, small in size, light in weight, low in noise, high in speed, large in torque, high in efficiency, low in current, and easy to assemble and maintain.

[0053] High-efficiency compression system: It adopts new advanced compression technology and high-efficiency motor. By optimizing the air circuit layout and cylinder chamber design, it improves the compression efficiency and response speed of the air pump, ensuring that sufficient air pressure is provided to the seat air spring in a short time.

[0054] Oil-free self-lubricating design: The piston rings are made of high wear-resistant and high-performance polytetrafluoroethylene composite material, with an oil-free self-lubricating design, ensuring clean airflow and environmental protection.

[0055] Low-noise design: By optimizing the internal structure of the air pump and using low-noise materials, such as chamber design and intake silencer design, the noise of the air pump during operation is effectively reduced, improving the quietness of the in-vehicle environment.

[0056] Long lifespan design: Using wear-resistant and corrosion-resistant materials and precision manufacturing processes, this seat air pump maintains stable performance and a long service life even after long-term use.

[0057] Novel Structural Innovation: The core of this utility model lies in its novel structural design, including but not limited to the optimization of the air passage layout, the innovative design of the cylinder chamber, and the improvement of the heat dissipation system. These innovative designs collectively enhance the overall performance and reliability of the air pump.

[0058] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A seat air pump that provides an air source for car seat air springs, characterized in that, include: The compression cylinder body includes a crankshaft drive chamber and a cylinder chamber distributed from top to bottom. The inner wall of the cylinder chamber is a smooth, mirror-finished cylindrical structure. The crankshaft drive chamber and the cylinder chamber are connected. An air pump assembly is installed inside the crankshaft drive chamber and the cylinder chamber. The air pump assembly includes a piston body and a connecting rod installed in the cylinder chamber. The connecting rod pushes the piston body to move up and down, compressing gas into the upper cavity. The piston body is provided with a one-way air inlet. The input motor is connected to the crankshaft drive chamber and then to the connecting rod drive of the air pump assembly. The output end is located at the upper part of the cylinder chamber; An intake end cover assembly is disposed outside the crankshaft drive chamber and filters the incoming air. It includes a cylinder cover plate, a filter pad, and a pressure plate. The cylinder cover plate has a concave cavity on its inner side, and the filter pad is disposed in the concave cavity. The lower end of the cylinder cover plate has a first air intake hole. The upper end of the pressure plate has a second air intake hole. Air enters through the first air intake hole and passes through the filter pad and the second air intake hole.

2. A seat air pump for providing an air source for automotive seat air springs according to claim 1, characterized in that: The piston body includes a piston ring seat, a piston valve seat, and a connecting rod seat. The piston valve seat is installed inside the piston ring seat and has a protrusion around its periphery. The inner wall of the piston ring seat is provided with a corresponding stepped groove. The protrusion is engaged with the upper part of the stepped groove, thereby limiting and fixing the lower end of the piston valve seat. The upper end face of the connecting rod seat contacts the piston ring seat and the piston valve seat respectively, supporting the piston ring seat and the piston valve seat. The connecting rod seat is fixedly connected to the piston valve seat.

3. A seat air pump for providing an air source for an automotive seat air spring according to claim 2, characterized in that: The stepped groove on the inner wall of the piston ring seat has two steps, and an annular groove is formed between the protrusion of the piston valve seat and the upper part of the stepped groove, and a ring spring is provided in the annular groove.

4. A seat air pump for providing an air source for an automotive seat air spring according to claim 3, characterized in that: The connecting rod seat and the piston valve seat are locked together by screws. The piston valve seat has a through hole in the middle for the screw to pass through, and the corresponding part of the connecting rod seat has a screw hole.

5. A seat air pump for providing an air source for an automotive seat air spring according to claim 4, characterized in that: The one-way air inlet includes multiple air pressure holes and an annular valve plate disposed on the piston valve seat. The multiple air pressure holes are arranged in a ring. The annular valve plate covers the air pressure holes, allowing the piston valve seat to allow air to enter in one direction. A valve plate limiting seat is disposed on the upper part of the piston valve seat, and the annular valve plate is sleeved on the valve plate limiting seat.

6. A seat air pump for providing an air source for an automotive seat air spring according to claim 5, characterized in that: The outer edge of the piston ring seat is a spherical arc surface that can rotate and fit against the inner wall of the cylinder chamber.

7. A seat air pump for providing an air source for an automotive seat air spring according to claim 6, characterized in that: The output end includes an output seat, and a one-way output valve seat is provided below the output seat. The one-way output valve seat is sleeved on the end of the cylinder chamber, with a through port in the middle. An upper valve plate is provided on the upper part of the one-way output valve seat, covering the through port. Multiple extension connecting parts are evenly arranged around the upper valve plate, and the ends of the extension connecting parts are connected to the upper end face of the one-way output valve seat. When inflating, the air pressure pushes the upper valve plate upward, and the through port of the one-way output valve seat opens. When inflating stops, the upper valve plate is tightly attached to the through port of the one-way output valve seat.

8. A seat air pump for providing an air source for an automotive seat air spring according to claim 7, characterized in that: A spring is provided between the output seat and the one-way output valve seat. The spring contacts the upper end face of the upper valve plate and provides elastic thrust to the upper valve plate, so that the upper valve plate is tightly attached to the port of the one-way output valve seat.

9. A seat air pump for providing an air source for an automotive seat air spring according to claim 8, characterized in that: The output shaft of the input motor extends into the crankshaft drive chamber, and an eccentric wheel is provided at the end of the output shaft. The eccentric wheel is hinged to the connecting rod, and the connecting rod swings up and down when rotating.

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