High-strength air compressor core and air compressor
By designing a rotating shaft connecting the support plate and cover plate in the air compressor core, the problems of low structural strength and high noise were solved, achieving a high-strength and low-noise air compressor core design.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DONGGUAN RICHTEK ELECTRONICS CO LTD
- Filing Date
- 2025-05-23
- Publication Date
- 2026-06-05
AI Technical Summary
The existing air compressor core has low structural strength, is prone to loosening after long-term operation, and is also noisy.
It adopts a high-strength air compressor core design, with a rotating shaft connecting the support plate and the cover plate to increase structural strength. The cover plate covers the drive wheel and the driven wheel to prevent lubricating oil from splashing and reduce noise.
The structural strength of the air compressor core has been improved, noise has been reduced, and effective lubricant application has been ensured, achieving a combination of high strength and low noise.
Smart Images

Figure CN224326369U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of air compressor technology, and in particular to a high-strength air compressor core and air compressor. Background Technology
[0002] An air compressor is a device used to compress gas and is widely used in daily life. For example, it inflates car tires, bicycles, and balloons, and inflates air mattresses and air seats when camping.
[0003] For example, Chinese authorized patent CNCN221921268U discloses a shock-absorbing air compressor core and air compressor. This shock-absorbing air compressor core includes a piston assembly, a power assembly, and a counterweight. The piston assembly includes a cylinder, a fixed seat, and a piston. The fixed seat is connected to the cylinder, and one end of the piston slides on the cylinder. The power assembly includes a power element, a driving wheel, and a driven wheel. The power element is mounted on the fixed seat, the driving wheel is mounted on the output end of the power element, and the driven wheel is rotatably connected to the fixed seat. The driving wheel drives the driven wheel to rotate, and the end of the piston away from the cylinder is rotatably connected to one end of the driven wheel. The power assembly also includes a first bearing and a first pin. The first bearing is installed in the middle of the driven wheel, and the first pin passes through the first bearing and the fixed seat. However, the first pin is only fixed by the first bearing, resulting in low structural strength, and it is prone to loosening after prolonged operation. Utility Model Content
[0004] Therefore, it is necessary to provide a high-strength air compressor core and air compressor to address the above problems.
[0005] A high-strength air compressor core includes a piston assembly and a power assembly. The piston assembly includes a support plate, a cover plate, a cylinder, and a connecting rod. The cover plate covers the support plate, the cylinder is mounted on the cover plate, and one end of the connecting rod is slidably mounted on the cylinder. The power assembly includes a power element, a driving wheel, a driven wheel, and a rotating shaft. The power element is mounted on the support plate, the driving wheel is mounted on the output end of the power element, the driven wheel is rotatably connected to the support plate, and the driving wheel drives the driven wheel to rotate. The rotating shaft passes through the driven wheel, one end of the rotating shaft is rotatably connected to the support plate, and the other end is rotatably connected to the cover plate. The end of the connecting rod away from the cylinder is rotatably connected to the driven wheel.
[0006] In one embodiment, the cover plate covers the driving wheel and the driven wheel; the power assembly further includes a first bearing and a second bearing, the first bearing being mounted on the support plate and the second bearing being mounted on the cover plate, and the rotating shaft passing through the first bearing, the driven wheel and the second bearing in sequence.
[0007] In one embodiment, the power assembly further includes a cam, a third bearing, and a bushing, with the bushing passing through the cam, the third bearing mounted on the end of the connecting rod away from the cylinder, and the bushing passing through the third bearing and one end of the cam.
[0008] In one embodiment, the cover plate includes a base plate portion and a panel portion, the base plate portion is connected to the support plate, and the cylinder is connected to the base plate portion; the panel portion is connected to one end of the base plate portion, and the panel portion covers the driving wheel and the driven wheel; the second bearing is mounted on the panel portion.
[0009] In one embodiment, the piston assembly further includes a plurality of fasteners, each of the fasteners being used to secure the panel portion to the support plate.
[0010] In one embodiment, the cylinder includes a pad portion, a cylinder body portion, and a limiting portion. The pad portion abuts against the base plate portion, the cylinder body portion is mounted on the pad portion, and the connecting rod is slidably disposed on the cylinder body portion. The limiting portion is mounted on the side of the pad portion away from the cylinder body portion and is inserted into the base plate portion.
[0011] In one embodiment, the piston assembly further includes a plurality of positioning members, each of which is used to fix the pad portion, the base plate portion and the support plate.
[0012] In one embodiment, the piston assembly further includes a sealing plug, a sealing plate, a valve, and an elastic element. The sealing plug is sleeved on the connecting rod and slidably disposed at one end of the cylinder. One end of the cylinder is provided with an air outlet, and the sealing plate is connected to the end of the cylinder with the air outlet. The valve is used to close the air outlet, and one end of the elastic element abuts against the sealing plate, and the other end abuts against the valve.
[0013] In one embodiment, the cylinder, the connecting rod, the cover plate, the driving wheel, and the driven wheel are all located on the same side of the support plate.
[0014] An air compressor comprising the aforementioned high-strength air compressor core.
[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0016] This high-strength air compressor core is connected to a support plate at one end of a rotating shaft and to a cover plate at the other end, thus improving structural strength. The cover plate covers the drive wheel and driven wheel, reducing noise and preventing lubricating oil from splashing from the drive wheel and driven wheel, thereby ensuring sufficient lubricating oil is applied to the drive wheel and driven wheel, further reducing noise. This high-strength air compressor core has high structural strength and excellent noise reduction effect. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the assembly structure of a high-strength air compressor core according to an embodiment of the present invention;
[0018] Figure 2 for Figure 1 A sectional view along line AA.
[0019] Figure 3 for Figure 1 The exploded view of the high-strength air compressor core shown is shown, in which fasteners, positioning parts and sealing plugs are not shown.
[0020] The meanings of the numbers in the attached diagram are as follows:
[0021] 100. High-strength air compressor core;
[0022] 10. Piston assembly; 11. Support plate; 12. Cover plate; 121. Base plate; 122. Panel; 13. Cylinder; 130. Exhaust port; 131. Pad plate; 132. Cylinder body; 133. Limiting part; 14. Connecting rod; 15. Fastener; 16. Positioning component; 17. Sealing plug; 18. Sealing plate; 180. Through hole; 19. Valve;
[0023] 20. Power assembly; 21. Power element; 22. Drive wheel; 23. Driven wheel; 24. First bearing; 25. Second bearing; 26. Shaft; 27. Cam; 28. Third bearing; 29. Insert shaft. Detailed Implementation
[0024] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.
[0025] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0027] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0028] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0029] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.
[0030] Please refer to Figures 1 to 3 An air compressor according to one embodiment of the utility model includes a high-strength air compressor core 100. The high-strength air compressor core 100 includes a piston assembly 10 and a power assembly 20. The piston assembly 10 includes a support plate 11, a cover plate 12, a cylinder 13, and a connecting rod 14. The cover plate 12 covers the support plate 11, the cylinder 13 is mounted on the cover plate 12, and one end of the connecting rod 14 is slidably mounted on the cylinder 13. The power assembly 20 includes a power element 21, a drive wheel 22, a driven wheel 23, and a rotating shaft 26. The power element 21 is mounted on the support plate 11, the drive wheel 22 is mounted on the output end of the power element 21, the driven wheel 23 is rotatably connected to the support plate 11, and the drive wheel 22 drives the driven wheel 23 to rotate. The rotating shaft 26 passes through the driven wheel 23, one end of the rotating shaft 26 is rotatably connected to the support plate 11, and the other end is rotatably connected to the cover plate 12. The end of the connecting rod 14 away from the cylinder 13 is rotatably connected to the driven wheel 23. The high-strength air compressor core 100 is rotatably connected to the support plate 11 at one end of the rotating shaft 26 and to the cover plate 12 at the other end, thereby improving the structural strength. The cover plate 12 covers the drive wheel 22 and the driven wheel 23, which can reduce noise. In addition, it can block the lubricating oil splashed from the drive wheel 22 and the driven wheel 23, thereby allowing sufficient lubricating oil to be applied to the drive wheel 22 and the driven wheel 23, further reducing noise.
[0031] like Figures 1 to 3 As shown, in this embodiment, the piston assembly 10 includes a support plate 11, a cover plate 12, a cylinder 13, and a connecting rod 14. The cover plate 12 covers the support plate 11, the cylinder 13 is mounted on the cover plate 12, and one end of the connecting rod 14 is slidably mounted on the cylinder 13. Optionally, the cover plate 12 includes a base plate portion 121 and a panel portion 122. The base plate portion 121 is connected to the support plate 11, and the cylinder 13 is connected to the base plate portion 121. The panel portion 122 is connected to one end of the base plate portion 121. Furthermore, one end of the cylinder 13 is provided with an air outlet 130; the cylinder 13 includes a pad portion 131, a cylinder body portion 132 and a limiting portion 133, the pad portion 131 abuts against the base plate portion 121, the cylinder body portion 132 is mounted on the pad portion 131, and the connecting rod 14 is slidably disposed on the cylinder body portion 132; the limiting portion 133 is mounted on the side of the pad portion 131 away from the cylinder body portion 132, and the limiting portion 133 is inserted into the base plate portion 121; in one embodiment, the air outlet 130 is provided in the cylinder body portion 132.
[0032] In one embodiment, the piston assembly 10 further includes a plurality of fasteners 15, each fastener 15 being used to secure the panel portion 122 and the support plate 11; optionally, the fasteners 15 are screws. The piston assembly 10 also includes a plurality of positioning members 16, each positioning member 16 being used to secure the pad portion 131, the base plate portion 121 and the support plate 11; optionally, each positioning member 16 is a screw.
[0033] like Figure 2 and Figure 3 As shown, the piston assembly 10 also includes a sealing plug 17, a sealing plate 18, a valve 19, and an elastic element (not shown). The sealing plug 17 is sleeved on the connecting rod 14 and slidably mounted on one end of the cylinder 13. The sealing plate 18 connects to one end of the cylinder 13 that has an air outlet 130, and one end of the sealing plate 18 has a through hole 180 communicating with the air outlet 130. The valve 19 is used to close the air outlet 130. One end of the elastic element abuts against the sealing plate 18, and the other end abuts against the valve 19. Optionally, the elastic element is a spring.
[0034] Please check again. Figures 1 to 3 The power assembly 20 includes a power element 21, a drive wheel 22, a driven wheel 23, and a rotating shaft 26. The power element 21 is mounted on a support plate 11. The drive wheel 22 is mounted on the output end of the power element 21. The driven wheel 23 is rotatably connected to the support plate 11. The drive wheel 22 drives the driven wheel 23 to rotate. Both the drive wheel 22 and the driven wheel 23 are coated with lubricating oil to reduce noise. A cover plate 12 covers the drive wheel 22 and the driven wheel 23 to prevent lubricating oil from splashing outside the cover plate 12. The end of the connecting rod 14 away from the cylinder 13 is rotatably connected to the driven wheel 23. Optionally, the driven wheel 23 meshes with the drive wheel 22. Further, the panel portion 122 covers the drive wheel 22 and the driven wheel 23. In one embodiment, the rotating shaft 26 passes through the driven wheel 23 in sequence. One end of the rotating shaft 26 is rotatably connected to the support plate 11, and the other end is rotatably connected to the cover plate 12 to improve structural strength.
[0035] In one embodiment, the power assembly 20 further includes a first bearing 24 and a second bearing 25. The first bearing 24 is mounted on the support plate 11, and the second bearing 25 is mounted on the cover plate 12. A rotating shaft 26 passes through the first bearing 24, the driven wheel 23, and the second bearing 25 in sequence. The structural strength is improved by passing the first bearing 24 and the second bearing 25 through the rotating shaft 26. Optionally, the second bearing 25 is mounted on the panel portion 122. The power assembly 20 also includes a cam 27, a third bearing 28, and a insert shaft 29. The rotating shaft 26 passes through the cam 27, the third bearing 28 is mounted on the end of the connecting rod 14 away from the cylinder 13, and the insert shaft 29 passes through the third bearing 28 and one end of the cam 27.
[0036] In one embodiment, the cylinder 13, connecting rod 14, cover plate 12, driving wheel 22, and driven wheel 23 are all disposed on the same side of the support plate 11. Optionally, the power element 21 is installed on the side of the support plate 11 away from the cylinder 13. Therefore, the support plate 11 and the power element 21 are arranged in a "7" shape, and a cavity is formed between the support plate 11 and the power element 21 to accommodate other components, resulting in a compact structure. Furthermore, the cylinder 13, the first bearing 24, the second bearing 25, the rotating shaft 26, and the cam 27 are all disposed on the same side of the support plate 11.
[0037] In use, the power element 21 drives the drive wheel 22 to rotate, the drive wheel 22 drives the driven wheel 23 to rotate synchronously, the driven wheel 23 drives the cam 27 to rotate synchronously, and the cam 27 drives the connecting rod 14 to slide synchronously along the cylinder 13. When the airflow in the cylinder 13 is large enough, the airflow opens the valve 19, so that the airflow is discharged through the through hole 180, realizing air pumping. The drive wheel 22 and the driven wheel 23 are covered by the cover plate 12 to prevent lubricating oil from splashing. Two bearings are passed through the rotating shaft 26 to improve the structural strength.
[0038] The high-strength air compressor core 100 of this utility model is rotatably connected to a support plate 11 at one end of a rotating shaft 26 and to a cover plate 12 at the other end, thereby improving structural strength. The cover plate 12 covers the drive wheel 22 and the driven wheel 23, which can reduce noise. Moreover, it can block the lubricating oil splashed from the drive wheel 22 and the driven wheel 23, thereby ensuring that sufficient lubricating oil is applied to the drive wheel 22 and the driven wheel 23, further reducing noise. The high-strength air compressor core 100 has high structural strength and excellent noise reduction effect.
[0039] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0040] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.
Claims
1. A high-strength air compressor core, characterized in that, The device includes a piston assembly and a power assembly. The piston assembly includes a support plate, a cover plate, a cylinder, and a connecting rod. The cover plate covers the support plate, the cylinder is mounted on the cover plate, and one end of the connecting rod slides onto the cylinder. The power assembly includes a power element, a drive wheel, a driven wheel, and a rotating shaft. The power element is mounted on the support plate, the drive wheel is mounted on the output end of the power element, the driven wheel is rotatably connected to the support plate, and the drive wheel drives the driven wheel to rotate. The rotating shaft passes through the driven wheel, one end of the rotating shaft is rotatably connected to the support plate, and the other end is rotatably connected to the cover plate. The end of the connecting rod away from the cylinder is rotatably connected to the driven wheel.
2. The high-strength air compressor core according to claim 1, characterized in that, The cover plate covers the driving wheel and the driven wheel; the power assembly also includes a first bearing and a second bearing, the first bearing is installed on the support plate, the second bearing is installed on the cover plate, and the rotating shaft passes through the first bearing, the driven wheel and the second bearing in sequence.
3. The high-strength air compressor core according to claim 2, characterized in that, The power assembly also includes a cam, a third bearing, and a insert shaft. The shaft passes through the cam, the third bearing is mounted on the end of the connecting rod away from the cylinder, and the insert shaft passes through the third bearing and one end of the cam.
4. The high-strength air compressor core according to claim 2, characterized in that, The cover plate includes a base plate and a panel. The base plate is connected to the support plate, and the cylinder is connected to the base plate. The panel is connected to one end of the base plate and covers the drive wheel and the driven wheel. The second bearing is mounted on the panel.
5. The high-strength air compressor core according to claim 4, characterized in that, The piston assembly also includes a plurality of fasteners, each of which is used to secure the panel portion to the support plate.
6. The high-strength air compressor core according to claim 4, characterized in that, The cylinder includes a pad portion, a cylinder body portion, and a limiting portion. The pad portion abuts against the base plate portion, the cylinder body portion is mounted on the pad portion, and the connecting rod is slidably disposed on the cylinder body portion. The limiting portion is mounted on the side of the pad portion away from the cylinder body portion and is inserted into the base plate portion.
7. The high-strength air compressor core according to claim 6, characterized in that, The piston assembly also includes a plurality of positioning members, each of which is used to fix the pad portion, the base plate portion and the support plate.
8. The high-strength air compressor core according to claim 1, characterized in that, The piston assembly further includes a sealing plug, a sealing plate, a valve, and an elastic element. The sealing plug is sleeved on the connecting rod and slidably disposed at one end of the cylinder. One end of the cylinder is provided with an air outlet, and the sealing plate is connected to the end of the cylinder with the air outlet. The valve is used to close the air outlet, and one end of the elastic element abuts against the sealing plate, and the other end abuts against the valve.
9. The high-strength air compressor core according to claim 1, characterized in that, The cylinder, the connecting rod, the cover plate, the driving wheel, and the driven wheel are all located on the same side of the support plate.
10. An air compressor, characterized in that, The high-strength air compressor core includes any one of claims 1-9.