Air compressor

Abstract

The utility model provides an air compressor which comprises an air cylinder, a frame body, a gear set, a motor, a piston, a first cooling fan and at least one second cooling fan. The frame body is connected to the cylinder. The gear set comprises a first gear, a second gear and at least one third gear. The second gear is pivoted to the frame body and meshed between the first gear and the third gear, and the third gear is pivoted to the frame body. The motor is connected to the first gear. The first end of the piston is arranged on the cylinder, and the second end of the piston is connected to the second gear. The first cooling fan is connected to the motor. The second cooling fan is connected to the third gear. The motor is suitable for driving the first cooling fan to rotate, driving the first end of the piston to reciprocate along the cylinder through the gear set, and driving the second cooling fan to rotate through the gear set. The air compressor provided by the utility model has good heat dissipation efficiency.

Description

Technical Field

[0001] The utility model relates to an air compressor, in particular to a piston type air compressor. Background Art

[0002] The vehicle-mounted air compressor can be used with a tire repair bottle to repair and inflate the tires of the vehicle, and can inflate the tires of the vehicle without using a tire repair bottle. The air compressor can be a piston air compressor, and its piston moves forward in the cylinder to compress the air in the cylinder, so that the high-pressure air is output from the front end of the cylinder. When the piston retreats in the cylinder, the space in the cylinder gradually becomes larger, causing the internal air pressure to drop, and it is compressed when the piston moves forward next time, and this cycle continues. The piston air compressor will heat up during operation, so a cooling fan is generally provided coaxially with the motor used to drive the piston. However, due to the compact internal configuration of the air compressor and the small space, the flow efficiency of the cooling airflow is poor, and the above-mentioned heat dissipation design cannot effectively achieve sufficient heat dissipation effect. Utility Model Content

[0003] The utility model is directed to an air compressor and has good heat dissipation efficiency.

[0004] According to an embodiment of the utility model, the air compressor includes a cylinder, a frame, a gear set, a motor, a piston, a first cooling fan and at least one second cooling fan. The frame is connected to the cylinder. The gear set includes a first gear, a second gear and at least one third gear. The second gear is pivoted to the frame and meshed between the first gear and the third gear, and the third gear is pivoted to the frame. The motor is connected to the first gear. The first end of the piston is arranged in the cylinder, and the second end of the piston is connected to the second gear. The first cooling fan is connected to the motor. The second cooling fan is connected to the third gear. The motor is suitable for driving the first cooling fan to rotate, suitable for driving the first end of the piston to reciprocate along the cylinder through the gear set, and suitable for driving the second cooling fan to rotate through the gear set.

[0005] In an embodiment of the present invention, the second heat dissipation fan includes an axial flow fan or a centrifugal fan.

[0006] In an embodiment of the present invention, in the front-rear direction of the air compressor, the first end of the piston is located in front of the second end of the piston, and the first gear and the third gear overlap each other in the front-rear direction.

[0007] In an embodiment of the present invention, the motor and the first gear are respectively located on two opposite sides of the frame.

[0008] In an embodiment of the present invention, the second cooling fan and the third gear are respectively located on two opposite sides of the frame.

[0009] In an embodiment of the present invention, the connection between the first gear and the third gear passes through the center of the second gear.

[0010] In an embodiment of the present invention, the connection between the first gear and the third gear does not pass through the center of the second gear.

[0011] In an embodiment of the present invention, the air compressor further includes at least one third cooling fan, wherein the second cooling fan and the third cooling fan are respectively connected to opposite sides of the third gear.

[0012] In an embodiment of the present invention, in the front-rear direction of the air compressor, the first end of the piston is located in front of the second end of the piston and the motor is located in front of the second cooling fan.

[0013] In an embodiment of the present invention, in the front-rear direction of the air compressor, the first end of the piston is located in front of the second end of the piston and the motor is located behind the second cooling fan.

[0014] Based on the above, in the air compressor of the utility model, in addition to the first cooling fan coaxial with the motor, a second cooling fan not coaxial with the motor is also provided, and the motor can drive the first cooling fan and the second cooling fan to rotate at the same time as the piston is driven. Accordingly, the first cooling fan and the second cooling fan can generate cooling airflow at different positions in the air compressor to effectively improve the heat dissipation efficiency of the air compressor. In addition, in the gear set coupled between the motor and the second cooling fan, the second gear and the third gear are pivotally connected to the same frame, so that the setting of the gear set is simpler, which can save manufacturing and assembly costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a partial structural stereogram of an air compressor according to an embodiment of the utility model;

[0016] Figure 2 yes Figure 1 A three-dimensional image of an air compressor from another perspective;

[0017] Figure 3 yes Figure 2 A three-dimensional diagram of some components of an air compressor;

[0018] Figure 4 yes Figure 2 A top view of some components of an air compressor;

[0019] Figure 5 is a three-dimensional diagram of an air compressor according to another embodiment of the utility model;

[0020] Figure 6is a three-dimensional diagram of an air compressor according to another embodiment of the utility model;

[0021] Figure 7 is a three-dimensional diagram of an air compressor according to another embodiment of the utility model;

[0022] Figure 8 It is a three-dimensional diagram of an air compressor according to another embodiment of the utility model. DETAILED DESCRIPTION

[0023] Reference will now be made in detail to exemplary embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Whenever possible, the same component numbers are used in the drawings and the description to represent the same or similar parts.

[0024] Figure 1 It is a partial structural stereoscopic diagram of an air compressor according to an embodiment of the utility model, which shows the axial directions X, Y, and Z. Figure 2 yes Figure 1 A three-dimensional image of an air compressor from another perspective. Please refer to Figure 1 and Figure 2 The air compressor 100 of this embodiment is, for example, a vehicle-mounted air compressor for providing high-pressure air for inflating and / or repairing tires of a vehicle, but the present invention is not limited thereto. The air compressor 100 includes a housing 180, a cylinder 110, a frame 120 connected to the cylinder 110, a gear set 130, a motor 140, a piston 150, a first cooling fan 160, and a second cooling fan 170. The cylinder 110, the frame 120, the gear set 130, the motor 140, the piston 150, the first cooling fan 160, and the second cooling fan 170 are disposed in the housing 180. To make the drawings clearer, Figure 1 and Figure 2 The housing 180 in FIG. 1 only shows its lower half, and the housing 180 may actually include an upper half that is not shown to shield its internal components.

[0025] Figure 3 yes Figure 2 A three-dimensional view of some components of an air compressor. Figure 4 yes Figure 2 A top view of some of the components of an air compressor. Figures 2 to 4 The gear set 130 of this embodiment includes a first gear 132, a second gear 134 and a third gear 136. The second gear 134 is, for example, a reduction gear, which is pivotally connected to the frame 120 and meshed between the first gear 132 and the third gear 136. The third gear 136 is also pivotally connected to the frame 120. In detail, the frame 120 may have an axial hole for pivoting the first gear 132 and the third gear 136, and a bushing or a bearing may be provided in the axial hole to increase lubrication and wear resistance.

[0026] The motor 140 is coaxially connected to the first gear 132, and the motor 140 and the first gear 132 are respectively located on opposite sides of the frame 120. The first end 152 of the piston 150 is disposed in the cylinder 110, and the second end 154 of the piston 150 is connected to the second gear 134. The first cooling fan 160 can be an axial flow fan, a centrifugal fan, or other types of fans (illustrated as an axial flow fan) and is coaxially connected to the motor 140. The second cooling fan 170 can be an axial flow fan, a centrifugal fan, or other types of fans (illustrated as a centrifugal fan) and is coaxially connected to the third gear 136, and the second cooling fan 170 and the third gear 136 are respectively located on opposite sides of the frame 120. The motor 140 is suitable for driving the first cooling fan 160 to rotate, and is suitable for driving the first end 152 of the piston 150 to reciprocate along the cylinder through the gear set 130, and is suitable for driving the second cooling fan 170 to rotate through the gear set 130.

[0027] The piston 150 moves forward in the cylinder 110 so that the air in the cylinder 110 is compressed, and the high-pressure air is output from the front end of the cylinder 110. When the piston 150 moves backward in the cylinder 110, the space in the cylinder 110 gradually becomes larger, and the air pressure inside the cylinder 110 decreases. Then, when the air pressure in the cylinder 110 is lower than the pressure value outside the cylinder 110, the external air is sucked into the cylinder 110 through the intake valve provided on the cylinder 110 or the piston 150 or is sucked into the cylinder 110 in other ways, and is compressed when the piston 150 moves forward next time, and the cycle continues. The detailed principle and method of the piston 150 to output high-pressure air are known in the relevant technical field and will not be repeated here.

[0028] As described above, in the air compressor 100 of the present embodiment, in addition to the first cooling fan 160 coaxial with the motor 140, a second cooling fan 170 not coaxial with the motor 140 is also provided, and the motor 140 can drive the first cooling fan 160 and the second cooling fan 170 to rotate while driving the piston 150 to operate. Accordingly, the first cooling fan 160 and the second cooling fan 170 can generate cooling airflow at different positions in the air compressor 100, so as to effectively improve the cooling efficiency of the air compressor 100. In addition, in the gear set 130 coupled between the motor 140 and the second cooling fan 170, the second gear 134 and the third gear 136 are pivotally connected to the same frame 120, so that the setting of the gear set 130 is relatively simple, which can save manufacturing and assembly costs.

[0029] In this embodiment, in the front-to-rear direction (axial direction Y) of the air compressor 100, the first end 152 of the piston 150 is located in front of the second end 154 of the piston 150. The first gear 132 and the third gear 136 overlap each other in the front-to-rear direction (axial direction Y).

[0030] exist Figures 1 to 4 In the illustrated embodiment, the connection between the first gear 132 and the third gear 136 passes through the center of the second gear 134. However, the present invention is not limited thereto, and the position of the gears may be changed according to the consideration of space configuration and / or heat dissipation airflow planning, which is illustrated below with reference to the accompanying drawings. Figure 5 It is a three-dimensional diagram of an air compressor according to another embodiment of the utility model. Figure 5 The air compressor 100A shown is Figure 2 The air compressor 100 shown is different in that Figure 5 The position of the third gear 136 in is different from Figure 2 The position of the third gear 136 in Figure 5 The connection between the first gear 132 and the third gear 136 does not pass through the center of the second gear 134. In other embodiments, the third gear 136 may be disposed at other appropriate positions adjacent to the second gear 134, or multiple gears may be added at multiple appropriate positions adjacent to the second gear 134, and multiple cooling fans connected to the added gears may be correspondingly provided to further improve the heat dissipation effect.

[0031] exist Figures 1 to 4 In the illustrated embodiment, the third gear 136 is connected to a cooling fan (second cooling fan 170 ). However, the present invention is not limited thereto, and the third gear 136 may be connected to more cooling fans according to space configuration and / or cooling airflow planning considerations, which are illustrated below with reference to the accompanying drawings. Figure 6 It is a three-dimensional diagram of an air compressor according to another embodiment of the utility model. Figure 6 The air compressor 100B shown is Figure 2 The air compressor 100 shown is different in that Figure 6 The air compressor 100B further includes a third cooling fan 190. The second cooling fan 170 and the third cooling fan 190 are respectively connected to opposite sides of the third gear 136 and can be driven to rotate by the third gear 136 at the same time.

[0032] exist Figures 1 to 4 In the illustrated embodiment, the motor 140 is located in front of the second cooling fan 170 in the front-to-back direction (axial direction Y) of the air compressor 100. However, the present invention is not limited thereto, and the relative positions of the motor 140 and the second cooling fan 170 may be changed according to the consideration of space configuration and / or cooling airflow planning, which is illustrated below with reference to the accompanying drawings. Figure 7 It is a three-dimensional diagram of an air compressor according to another embodiment of the utility model. Figure 7 The air compressor 100C shown is Figure 2 The difference of the air compressor 100 is that Figure 7In the illustrated embodiment, the motor 140 is located behind the second heat dissipation fan 170 in the front-to-rear direction (axial direction Y) of the air compressor 100C.

[0033] Figure 8 It is a three-dimensional diagram of an air compressor according to another embodiment of the utility model. Figure 8 The air compressor 100D shown is Figure 7 The difference between the air compressor 100C shown in FIG. 100D is that in the air compressor 100D, the second cooling fan 170' is an axial flow fan instead of a conventional fan. Figure 7 The second heat dissipation fan 170 is a centrifugal fan.

[0034] In summary, in the air compressor of the present invention, in addition to the first cooling fan coaxial with the motor, a second cooling fan not coaxial with the motor is also provided, and the motor can drive the first cooling fan and the second cooling fan to rotate while driving the piston. Accordingly, the first cooling fan and the second cooling fan can generate cooling airflow at different positions in the air compressor to effectively improve the cooling efficiency of the air compressor. In addition, in the gear set coupled between the motor and the second cooling fan, the second gear and the third gear are pivotally connected to the same frame, so that the setting of the gear set is simpler, which can save manufacturing and assembly costs.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. An air compressor, characterized in that: include: cylinder; A frame connected to the cylinder; A gear set, comprising a first gear, a second gear and at least one third gear, wherein the second gear is pivotally connected to the frame and meshed between the first gear and the at least one third gear, and the at least one third gear is pivotally connected to the frame; a motor connected to the first gear; A piston, wherein a first end of the piston is disposed in the cylinder, and a second end of the piston is connected to the second gear; A first cooling fan connected to the motor; as well as at least one second cooling fan connected to the at least one third gear, The motor is suitable for driving the first cooling fan to rotate, is suitable for driving the first end of the piston to reciprocate along the cylinder through the gear set, and is suitable for driving the at least one second cooling fan to rotate through the gear set.

2. The air compressor according to claim 1, characterized in that: The at least one second heat dissipation fan includes an axial flow fan or a centrifugal fan.

3. The air compressor according to claim 1, characterized in that: In the front-to-rear direction of the air compressor, the first end of the piston is located in front of the second end of the piston, and the first gear and the at least one third gear overlap each other in the front-to-rear direction.

4. The air compressor according to claim 1, characterized in that: The motor and the first gear are respectively located at two opposite sides of the frame.

5. The air compressor according to claim 1, characterized in that: The at least one second cooling fan and the at least one third gear are respectively located at two opposite sides of the frame.

6. The air compressor according to claim 1, characterized in that: The connection between the first gear and the at least one third gear passes through the center of the second gear.

7. The air compressor according to claim 1, characterized in that: The connection between the first gear and the at least one third gear does not pass through the center of the second gear.

8. The air compressor according to claim 1, characterized in that: It also includes at least one third cooling fan, wherein the at least one second cooling fan and the at least one third cooling fan are respectively connected to opposite sides of the at least one third gear.

9. The air compressor according to claim 1, characterized in that: In the front-rear direction of the air compressor, the first end of the piston is located in front of the second end of the piston and the motor is located in front of the at least one second cooling fan.

10. The air compressor according to claim 1, characterized in that In the front-rear direction of the air compressor, the first end of the piston is located in front of the second end of the piston and the motor is located behind the at least one second cooling fan.

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