Air pump machine core

Abstract

The utility model relates to the technical field of air pumps, in particular to an air pump machine core which comprises an air cylinder, a piston, a gearbox, a large shaft, a large tooth, a small tooth, a motor and a bearing, the air cylinder is slidably connected with one end of the piston, the other end of the piston is rotatably connected with the edge of the large tooth, the middle of the large tooth is in transmission connection with the gearbox, and the large shaft and the bearing are arranged between the large tooth and the gearbox. A center hole in the large tooth is in close-fitting connection with one end of a large shaft, the other end of the large shaft is in close-fitting connection with a center hole of a bearing, a center hole in the gearbox is in close-fitting connection with the outer side of the large shaft, a small tooth is arranged on a rotating shaft of the motor, and the small tooth on the rotating shaft of the motor is meshed with an annular tooth on the edge of the large tooth. According to the utility model, the guide bone and the stop block are arranged, so that the assembly is easy and simple, one end of the large shaft is in close-fitting connection with the large tooth, and the other end of the large shaft is in close-fitting connection with the center hole of the bearing, so that a fastening screw is saved, the cost is saved, and a station is saved.

Description

Technical Field

[0001] This utility model relates to the technical field of water pumps, and more particularly to an air pump mechanism. Background Technology

[0002] In the production of portable air pumps, the gearbox and bearing are fixed with screws. Adding an extra screw requires an additional workstation and additional material, increasing costs. The cylinder and gearbox are fixedly connected, but during production, when one end of the cylinder and one end of the gearbox are placed together, they automatically separate due to gravity before the screws are tightened. The spring installation between the cylinder and the nozzle also frequently causes problems; the spring often presses against the side wall of the nozzle, causing it to lose its effectiveness. This utility model relates to an improved structure to address these problems encountered in production. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide an air pump core that solves the problem of difficult assembly in existing portable air pumps.

[0004] The solution adopted by this utility model to solve its technical problem is as follows: an air pump core, including a cylinder, a piston, a gearbox, a large shaft, a large tooth, a small tooth, a motor, and a bearing. The cylinder and one end of the piston are slidably connected so that the piston can slide relative to the cylinder. The other end of the piston is rotatably connected to the edge of the large tooth so that the piston can rotate relative to the large tooth. The middle part of the large tooth is drivenly connected to the gearbox so that the large tooth can rotate relative to the gearbox. A large shaft and a bearing are provided between the large tooth and the gearbox. The center hole on the large tooth is tightly fitted to one end of the large shaft. The other end of the large shaft is tightly fitted to the center hole of the bearing. The center hole on the gearbox is tightly fitted to the outer side of the large shaft. A small tooth is provided on the rotating shaft of the motor. The small tooth on the rotating shaft meshes with the annular tooth on the edge of the large tooth so that the motor and the large tooth are drivenly connected.

[0005] An air pump mechanism includes a cylinder and a gearbox. The cylinder and the gearbox are provided with fixing holes on both sides for fixing the cylinder and the gearbox. The cylinder is provided with a stop. The position of the fixing hole on the cylinder corresponds to the position of the fixing hole on the gearbox. The gearbox is provided with a stop block so that the stop on the cylinder can be inserted under the stop block.

[0006] In the above structure, the gear box is provided with forming holes so that the mold of the gear box can form the stop block by piercing through.

[0007] An air pump mechanism includes a cylinder, an air nozzle, a spring, and an air shut-off valve. The protrusion of the cylinder is inserted into the recess of the air nozzle. The spring and the air shut-off valve are installed on the protrusion of the cylinder so that the spring and the air shut-off valve can slide within the protrusion of the cylinder. The air shut-off valve is disposed between the spring and the cylinder. The spring is disposed between the cylinder and the air nozzle. A guide bone is provided on the inner side of the recess of the air nozzle so that the spring can be smoothly inserted into the inner side of the recess of the air nozzle. The guide bone has a chamfer or rounded corner at the end facing the outlet.

[0008] In the above structure, there are four guide bones, which are evenly distributed on the inner side of the nozzle recess.

[0009] An air pump mechanism includes a cylinder, a piston, a gearbox, a main shaft, large gears, small gears, a motor, bearings, an air nozzle, a spring, and an air shut-off valve. One end of the cylinder is slidably connected to the piston to allow the piston to slide relative to the cylinder. The other end of the piston is rotatably connected to the edge of the large gears to allow the piston to rotate relative to the large gears. The middle part of the large gears is drivenly connected to the gearbox to allow the large gears to rotate relative to the gearbox. A main shaft and bearings are disposed between the large gears and the gearbox. The center hole on the large gears is tightly fitted to one end of the main shaft, and the other end of the main shaft is tightly fitted to the center hole of the bearings. The center hole on the gearbox is tightly fitted to the outer side of the main shaft. Small gears are provided on the motor shaft, and the edges of the small gears on the motor shaft are ringed with the edges of the large gears. The gears mesh to connect the motor to the large gear transmission. Fixing holes for the cylinder and gearbox are provided on both sides of the cylinder and gearbox. The cylinder has a stop position, and the positions of the fixing holes on the cylinder and gearbox correspond to the positions of the fixing holes on the gearbox. The gearbox has a stop block so that the stop position on the cylinder can be inserted under the stop block. The protrusion of the cylinder is inserted into the recess of the nozzle. A spring and a shut-off valve are installed on the protrusion of the cylinder so that they can slide within the protrusion. The shut-off valve is located between the spring and the cylinder, and the spring is located between the cylinder and the nozzle. A guide bone is provided on the inner side of the nozzle recess so that the spring can be smoothly inserted into the inner side of the nozzle recess. The guide bone has a chamfer or rounded corner at the end facing the outlet.

[0010] The technical advantages of this utility model are as follows: by setting guide bones and stops, assembly is easy and simple; one end of the large shaft is tightly connected to the large gear, and the other end of the large shaft is tightly connected to the center hole of the bearing, saving one fastening screw, saving cost and one workstation, and facilitating the assembly and production of the air pump. The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it according to the contents of the specification, and to make the above and other objects, features and advantages of this utility model more apparent, preferred embodiments are given below in conjunction with the accompanying drawings for detailed description. Attached Figure Description

[0011] Figure 1 This is a perspective view of the present utility model;

[0012] Figure 2 This is a perspective view of the present invention from another angle;

[0013] Figure 3 This is an exploded view of the present invention;

[0014] Figure 4 This is a perspective view of the air nozzle of this utility model. In the figure: 1. Cylinder; 2. Piston; 3. Gearbox; 4. Main shaft; 5. Large gear; 6. Small gear; 7. Motor; 8. Bearing; 9. Fixing hole; 10. Stop block; 11. Forming hole; 12. Air nozzle; 13. Spring; 14. Air shut-off valve; 15. Guide bone; 16. Stop position. Detailed Implementation

[0015] To make the content of this utility model easier to understand, the present utility model will be further described below with reference to specific embodiments and accompanying drawings.

[0016] It should be noted that the terms "center," "upper," "lower," "front," "rear," "left," "right," "inner," and "outer" used herein to indicate 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 do not 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. Unless otherwise stated, "a plurality of" means two or more.

[0017] Unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0018] Referring to the accompanying drawings, an air pump mechanism includes a cylinder 1, a piston 2, a gearbox 3, a large shaft 4, a large gear 5, a small gear 6, a motor 7, and a bearing 8. The cylinder 1 is slidably connected to one end of the piston 2 so that the piston 2 can slide relative to the cylinder 1. The other end of the piston 2 is rotatably connected to the edge of the large gear 5 so that the piston 2 can rotate relative to the large gear 5. The middle part of the large gear 5 is drive-connected to the gearbox 3 so that the large gear 5 can rotate relative to the gearbox 3. The large shaft 4 and the bearing 8 are disposed between the large gear 5 and the gearbox 3. The center hole on the large gear 5 is tightly fitted to one end of the large shaft 4, and the other end of the large shaft 4 is tightly fitted to the center hole of the bearing 8. The center hole on the gearbox 3 is tightly fitted to the outer side of the large shaft 4. The small gear 6 is disposed on the rotating shaft of the motor 7. The small gear 6 on the rotating shaft of the motor 7 meshes with the annular teeth on the edge of the large gear 5 so that the motor 7 and the large gear 5 are drive-connected.

[0019] An air pump mechanism includes a cylinder 1 and a gearbox 3. Fixing holes 9 for the cylinder 1 and gearbox 3 are provided on both sides of the cylinder 1 and the gearbox 3. The cylinder 1 has a stop 16, and the positions of the fixing holes 9 on the cylinder 1 and the gearbox 3 correspond to the positions of the fixing holes 9 on the gearbox 3. The gearbox 3 has a stop block 10 so that the stop 16 on the cylinder 1 can be inserted under the stop block 10. By providing the stop block 10, the stop block 10 can clamp the gearbox 3 in the middle, preventing the cylinder 1 from falling off the gearbox 3 due to its center of gravity.

[0020] Furthermore, the gearbox 3 is provided with forming holes 11 so that the mold of the gearbox 3 can form the stop block 10 by means of impact.

[0021] An air pump mechanism includes a cylinder 1, an air nozzle 12, a spring 13, and an air shut-off valve 14. The protrusion of the cylinder 1 is inserted into the recess of the air nozzle 12. The spring 13 and the air shut-off valve 14 are mounted on the protrusion of the cylinder 1 so that they can slide within the protrusion. The air shut-off valve 14 is positioned between the spring 13 and the cylinder 1, and the spring 13 is positioned between the cylinder 1 and the air nozzle 12. A guide rib 15 is provided on the inner side of the recess of the air nozzle 12 to allow the spring 13 to be smoothly inserted into the inner side of the recess of the air nozzle 12. The guide rib 15 has a chamfer or rounded corner at the outlet end. By providing the guide rib 15, the assembly of the spring 13 is much easier.

[0022] Furthermore, the guide ribs 15 are configured as four, and the four guide ribs 15 are evenly distributed on the inner side of the recess of the air nozzle 12.

[0023] This utility model makes assembly easy and simple by setting guide bone 15 and stop block 10. By tightly connecting one end of the large shaft 4 to the large tooth 5 and the other end of the large shaft 4 to the center hole of the bearing 8, a fastening screw is saved, saving costs and a work station, which facilitates the assembly and production of air pump.

[0024] The embodiments described above are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and modifications made by those skilled in the art based on this utility model shall fall within the scope of protection of this utility model.

Claims

1. An air pump core, characterized in that: The device includes a cylinder, a piston, a gearbox, a main shaft, large teeth, small teeth, a motor, and bearings. The cylinder is slidably connected to one end of the piston so that the piston can slide relative to the cylinder. The other end of the piston is rotatably connected to the edge of the large teeth so that the piston can rotate relative to the large teeth. The middle part of the large teeth is drivenly connected to the gearbox so that the large teeth can rotate relative to the gearbox. A main shaft and bearings are disposed between the large teeth and the gearbox. The center hole on the large teeth is tightly fitted to one end of the main shaft, and the other end of the main shaft is tightly fitted to the center hole of the bearing. The center hole on the gearbox is tightly fitted to the outer side of the main shaft. The motor shaft has small teeth that mesh with the annular teeth on the edge of the large teeth so that the motor and the large teeth are drivenly connected.

2. The air pump core according to claim 1, characterized in that: The cylinder and the gearbox are provided with fixing holes on both sides for fixing the cylinder and the gearbox. The cylinder is provided with a stop. The position of the fixing hole on the cylinder corresponds to the position of the fixing hole on the gearbox. The gearbox is provided with a stop block so that the stop on the cylinder can be inserted under the stop block.

3. The air pump core according to claim 2, characterized in that: The dental box is provided with forming holes so that the mold of the dental box can form the stop block by means of impact.

4. The air pump core according to claim 1, characterized in that: It also includes an air nozzle, a spring, and an air shut-off valve, wherein the protrusion of the cylinder is inserted into the recess of the air nozzle, the spring and the air shut-off valve are mounted on the protrusion of the cylinder so that the spring and the air shut-off valve can slide within the protrusion of the cylinder, the air shut-off valve is disposed between the spring and the cylinder, the spring is disposed between the cylinder and the air nozzle, a guide bone is provided on the inner side of the recess of the air nozzle so that the spring can be smoothly inserted into the inner side of the recess of the air nozzle, and the guide bone is provided with a chamfer or rounded corner at the end facing the outlet.

5. The air pump core according to claim 4, characterized in that: The guide ribs are configured as four, and the four guide ribs are evenly distributed on the inner side of the air nozzle recess.

6. An air pump core, characterized in that: The system includes a cylinder, piston, gearbox, main shaft, large gear, small gear, motor, bearing, nozzle, spring, and shut-off valve. One end of the cylinder is slidably connected to the piston so that the piston can slide relative to the cylinder. The other end of the piston is rotatably connected to the edge of the large gear so that the piston can rotate relative to the large gear. The middle part of the large gear is drivenly connected to the gearbox so that the large gear can rotate relative to the gearbox. A main shaft and bearing are disposed between the large gear and the gearbox. The center hole on the large gear is tightly fitted to one end of the main shaft, and the other end of the main shaft is tightly fitted to the center hole of the bearing. The center hole on the gearbox is tightly fitted to the outer side of the main shaft. A small gear is disposed on the motor shaft, and the small gear on the motor shaft meshes with the annular teeth on the edge of the large gear so that the motor and the gearbox... The gearbox has a large gear transmission connection. Fixing holes for the cylinder and gearbox are provided on both sides of the cylinder and both sides of the gearbox. The cylinder has a stop position. The positions of the fixing holes on the cylinder and gearbox correspond to the positions of the fixing holes on the gearbox. The gearbox has a stop block so that the stop position on the cylinder can be inserted under the stop block. The protrusion of the cylinder is inserted into the recess of the nozzle. The spring and the air-closing valve are installed on the protrusion of the cylinder so that they can slide within the protrusion. The air-closing valve is located between the spring and the cylinder. The spring is located between the cylinder and the nozzle. A guide bone is provided on the inner side of the nozzle recess so that the spring can be smoothly inserted into the inner side of the nozzle recess. The guide bone has a chamfer or rounded corner at the outlet end.

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