A portable hand pump

Abstract

The utility model discloses a portable hand pump relates to hand pump technical field, including base, the top fixedly connected with air cylinder of base, the inboard wall of air cylinder has the crank that is swingingly connected through bearing, the middle part of crank is connected with connecting rod through bearing, and the top of connecting rod is articulated with lower piston, the bottom side of base is fixedly connected with the pressurizing cylinder, and the inside of pressurizing cylinder is swingingly connected with bearing ring through bearing, the side of bearing ring is fixedly connected with ratchet ring, and the inside of ratchet ring is provided with ratchet post, and ratchet post is power connected with crank through speed reducer. The utility model discloses through setting up pressurizing cylinder, after preliminary pressurization through handle, can use the rope to rotate ratchet ring and make lower piston up and down movement, further pressurize the air in the air cylinder and send into high pressure cylinder, after the transmission of speed reducer, can reduce the strength in the pressurization process, effectively avoided the problem that manual pump pressurization cannot be used because of the small strength.

Description

Technical Field

[0001] This utility model relates to the field of manual pump technology, specifically a convenient manual pump. Background Technology

[0002] An air pump is a device that removes air from or adds air to a closed space. Air pumps are mainly divided into electric air pumps, manual air pumps, and foot-operated air pumps. A manual air pump is powered by hand force; it generates air pressure by continuously compressing air with the force of the hand.

[0003] A portable air pump is disclosed in Chinese utility model patent document with publication number CN221990513U. Although the utility model can save manpower by driving the air rod to move in the air pump with a motor, the utility model needs to use a storage battery or power cord for power supply, which is inconvenient to use when there is no power. In addition, the existing manual pump is very difficult to pressurize, especially for women with less strength, who cannot use the manual pump to reach the required air pressure.

[0004] Therefore, it is necessary to propose a convenient manual pump to solve the above problems. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a convenient manual pump that solves the problems mentioned in the background section.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: it includes a base, an air cylinder is fixedly connected to the top of the base, a crank is movably connected to the inner wall of the air cylinder through a bearing, a connecting rod is connected to the middle of the crank through a bearing, and a lower piston is hinged to the top of the connecting rod.

[0007] A pressure cylinder is fixedly connected to the bottom side of the base. Inside the pressure cylinder, a bearing ring is movably connected via a bearing. A ratchet ring is fixedly connected to the side of the bearing ring. A ratchet post is set inside the ratchet ring. The ratchet post is connected to the crank power via a reduction mechanism.

[0008] The end of the pressure cylinder is threaded with a threaded cap, the middle of which is fixedly connected to a coil spring. The outer end of the coil spring is fixedly connected to the inner wall of the bearing ring. A pull rope is wound around the outer wall of the ratchet ring, and a pull rod is fixedly connected to the outer end of the pull rope.

[0009] Optionally, the air cylinder has an upper piston inside, a high-pressure cylinder is fixedly connected to one side of the bottom of the air cylinder, an air filling pipe is provided on the outer wall of the bottom of the high-pressure cylinder, a pressure gauge is provided on the top of the high-pressure cylinder, and two one-way valves are symmetrically arranged on the side wall of the air cylinder.

[0010] Optionally, the reduction mechanism includes a gear ring directly fixedly connected to the crank, with planetary gears disposed inside the gear ring, and a sun gear fixedly connected to the middle of the ratchet column via a rotating shaft, the sun gear meshing with the planetary gears.

[0011] Optionally, the inner wall of the ratchet ring is provided with ratchet teeth arranged in a ring array, and the outer wall of the ratchet post is provided with a ratchet groove. The ratchet groove is movably connected to a ratchet plate by a pin, and the middle part of the ratchet plate is connected to the inner wall of the ratchet groove by a spring.

[0012] Optionally, a pressure rod is fixedly connected to the middle of the upper piston, and a handle is fixedly connected to the top of the pressure rod.

[0013] Optionally, the top of the air pump is threaded with a sealing cap, and the top of the sealing cap is symmetrically hinged with two L-shaped rods. The ends of the L-shaped rods are fixedly connected with magnets, and a rectangular groove for docking the two magnets is opened in the middle of the top of the handle.

[0014] Optionally, the base has symmetrical slots on its sides, with a U-ring hinged to the bottom of the slots, and triangular blocks made of rubber embedded in the side walls of the slots.

[0015] This utility model provides a convenient manual pump with the following advantages:

[0016] 1. This portable manual pump, by setting up a pressure cylinder, allows for initial pressurization via the handle. Then, by pulling the rope to rotate the ratchet ring, the lower piston moves up and down, further pressurizing the air inside the cylinder and sending it into the high-pressure cylinder. After being transmitted through the deceleration mechanism, the force required during the pressurization process is reduced, effectively avoiding the problem of not being able to use the manual pump for pressurization due to insufficient force.

[0017] 2. This portable manual pump features an L-shaped lever. When the pump needs to be carried, magnets can be used to secure the two L-shaped levers inside the rectangular slot, thus limiting the position of the handle and preventing the pressure rod from extending automatically when the pump is being carried, thereby facilitating its portability. Attached Figure Description

[0018] Figure 1 This is a front-view three-dimensional structural schematic diagram of the present utility model.

[0019] Figure 2 This is a three-dimensional structural diagram of the sealing cap of this utility model.

[0020] Figure 3 This is a three-dimensional structural diagram of the handle of this utility model.

[0021] Figure 4 This is a side view of the three-dimensional structure of the base of this utility model.

[0022] Figure 5This is a side view sectional structural diagram of the base of this utility model.

[0023] Figure 6 This utility model Figure 5 Schematic diagram of the structure at point A in the middle.

[0024] Figure 7 This is a schematic diagram of the main cross-sectional structure of the ratchet ring of this utility model.

[0025] In the diagram: 1. Base; 2. Pressure cylinder; 3. U-ring; 4. Air pump; 5. Sealing cap; 6. Handle; 7. High-pressure cylinder; 8. Pressure gauge; 9. Inflation hose; 10. L-rod; 11. Magnet; 12. Pressure rod; 13. Rectangular groove; 14. Slot; 15. Triangular block; 16. Rope hole; 17. Pull rope; 18. Pull rod; 19. Threaded cap; 20. One-way valve; 21. Crank; 22. Connecting rod; 23. Lower piston; 24. Upper piston; 25. Gear ring; 26. Planetary gear; 27. Sun gear; 28. Racket column; 29. ​​Racket ring; 30. Bearing ring; 31. Coil spring; 32. Racket groove; 33. Racket plate; 34. Spring. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0027] Please see Figures 1 to 7 This utility model provides a technical solution: a convenient manual pump, including a base 1, an air cylinder 4 fixedly connected to the top of the base 1, a crank 21 movably connected to the inner wall of the air cylinder 4 through a bearing, a connecting rod 22 connected to the middle of the crank 21 through a bearing, and a lower piston 23 hinged to the top of the connecting rod 22.

[0028] A pressure cylinder 2 is fixedly connected to the bottom side of the base 1. A bearing ring 30 is movably connected inside the pressure cylinder 2 through a bearing. A ratchet ring 29 is fixedly connected to the side of the bearing ring 30. A ratchet column 28 is provided inside the ratchet ring 29. The ratchet column 28 is poweredly connected to the crank 21 through a reduction mechanism.

[0029] The end of the pressure cylinder 2 is threaded with a threaded cap 19, and a coil spring 31 is fixedly connected to the middle of the threaded cap 19. The outer end of the coil spring 31 is fixedly connected to the inner wall of the bearing ring 30. A pull rope 17 is wound around the outer wall of the ratchet ring 29. A rope hole 16 is opened at the top of the pressure cylinder 2. A pull rod 18 is fixedly connected to the outer end of the pull rope 17. A groove for storing the pull rod 18 is opened at the top of the base 1.

[0030] A pressure rod 12 is fixedly connected to the middle of the upper piston 24, and a handle 6 is fixedly connected to the top of the pressure rod 12.

[0031] Specifically, the air cylinder 4 has an upper piston 24 inside, a high-pressure cylinder 7 is fixedly connected to one side of the bottom of the air cylinder 4, an inflation pipe 9 is provided on the outer wall of the bottom of the high-pressure cylinder 7, a pressure gauge 8 is provided on the top of the high-pressure cylinder 7, and two one-way valves 20 are symmetrically arranged on the side wall of the air cylinder 4. One one-way valve 20 connects the air cylinder 4 and the high-pressure cylinder 7 and is responsible for sending the high-pressure gas inside the air cylinder 4 into the high-pressure cylinder 7 in one direction. The other one-way valve 20 connects the air cylinder 4 and the outside atmosphere and draws the outside air into the air cylinder 4 in one direction.

[0032] In this embodiment, when the handle 6 drives the upper piston 24 upward, the one-way valve 20 can be used to draw external air into the air cylinder 4. When the upper piston 24 moves downward to pressurize the air, the pressurized air can enter the high-pressure cylinder 7 through the one-way valve 20, and then enter the equipment that needs to be inflated through the inflation pipe 9.

[0033] Specifically, the top of the air pump 4 is threaded with a sealing cap 5, and the top of the sealing cap 5 is symmetrically hinged with two L rods 10. The ends of the L rods 10 are fixedly connected with magnets 11, and the top of the handle 6 has a rectangular groove 13 for connecting the two magnets 11.

[0034] The inner wall of the ratchet ring 29 has ratchet teeth arranged in a ring array. The outer wall of the ratchet post 28 has a ratchet groove 32. The ratchet groove 32 is movably connected to the ratchet plate 33 by a pin. The middle part of the ratchet plate 33 is connected to the inner wall of the ratchet groove 32 by a spring 34.

[0035] When further pressure is needed, pressing down with handle 6 becomes very difficult. It is necessary to rotate L-rod 10, which, through the mutual attraction of two magnets 11, locks the two L-rods 10 at the top of the rectangular slot 13, thus limiting handle 6 to its lowest position and preventing it from moving upwards. At this point, the pull rope 17 can be pulled out manually by pulling lever 18. Figure 6 and Figure 7 As shown, when the pull rope 17 is pulled out, it drives the ratchet ring 29 to rotate, which drives the ratchet column 28 to rotate through the ratchet plate 33. After passing through the reduction mechanism, the crank 21 rotates, and the lower piston 23 moves up and down through the crank connecting rod mechanism to achieve the purpose of pressurizing the air.

[0036] like Figure 6 As shown, during the process of pulling the rope 17 out, the coil spring 31 is wound up by force. When pulling the rope 17 back, the rope 17 can be pulled back by the coil spring 31, making it easy to pull the rope 17 again to rotate the crank 21.

[0037] Specifically, the reduction mechanism includes a gear ring 25 that is directly fixedly connected to the crank 21. Planet gears 26 are provided inside the gear ring 25. A sun gear 27 is fixedly connected to the middle of the ratchet column 28 through a rotating shaft. The sun gear 27 meshes with the planet gears 26.

[0038] In this embodiment, as Figure 6 As shown, when the ratchet column 28 is rotated, it can make the sun gear 27 rotate synchronously. After being driven by the planet gear 26, it makes the ring gear 25 rotate, which makes it easy to use a small force to drive the crank 21 to rotate and pressurize the air.

[0039] Specifically, the base 1 has symmetrical slots 14 on its side, and a U-ring 3 is hinged to the bottom of the slot 14. A triangular block 15 is embedded in the side wall of the slot 14, and the triangular block 15 is made of rubber.

[0040] In this embodiment, when the air is pressurized by the handle 6, the U-ring 3 can be opened, and the base 1 can be prevented from moving by stepping on the U-ring 3. When not in use, the U-ring 3 can be limited inside the slot 14 by the triangular block 15 to prevent the U-ring 3 from being thrown out and causing inconvenience to carrying.

[0041] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A portable manual pump, comprising a base, wherein an air cylinder is fixedly connected to the top of the base, characterized in that: The inner wall of the cylinder is movably connected to a crank via a bearing, the middle of the crank is connected to a connecting rod via a bearing, and the top of the connecting rod is hinged to a lower piston. A pressure cylinder is fixedly connected to the bottom side of the base. A bearing ring is movably connected inside the pressure cylinder through a bearing. A ratchet ring is fixedly connected to the side of the bearing ring. A ratchet column is provided inside the ratchet ring. The ratchet column is connected to the crank power through a reduction mechanism. The end of the pressure cylinder is threaded with a threaded cap, the middle of which is fixedly connected to a coil spring. The outer end of the coil spring is fixedly connected to the inner wall of the bearing ring. A pull rope is wound around the outer wall of the ratchet ring, and a pull rod is fixedly connected to the outer end of the pull rope.

2. A portable manual pump according to claim 1, characterized in that: The air cylinder has an upper piston inside, and a high-pressure cylinder is fixedly connected to one side of the bottom of the air cylinder. An air filling pipe is provided on the outer wall of the bottom of the high-pressure cylinder, and a pressure gauge is provided on the top of the high-pressure cylinder. Two one-way valves are symmetrically arranged on the side wall of the air cylinder.

3. A portable manual pump according to claim 1, characterized in that: The reduction mechanism includes a gear ring directly fixedly connected to the crank, a planetary gear is provided inside the gear ring, and a sun gear is fixedly connected to the middle of the ratchet column through a rotating shaft, the sun gear meshing with the planetary gears.

4. A portable manual pump according to claim 1, characterized in that: The inner wall of the ratchet ring is arranged in a ring array with ratchet teeth, and the outer wall of the ratchet post is provided with a ratchet groove. The ratchet groove is movably connected to a ratchet plate by a pin, and the middle part of the ratchet plate is connected to the inner wall of the ratchet groove by a spring.

5. A portable manual pump according to claim 2, characterized in that: A pressure rod is fixedly connected to the middle of the upper piston, and a handle is fixedly connected to the top of the pressure rod.

6. A portable manual pump according to claim 5, characterized in that: The top of the air cylinder is threaded with a sealing cap, and the top of the sealing cap is symmetrically hinged with two L-shaped rods. The ends of the L-shaped rods are fixedly connected with magnets, and the top center of the handle has a rectangular groove for connecting the two magnets.

7. A portable manual pump according to claim 1, characterized in that: The base has symmetrical slots on its sides, and a U-ring is hinged to the bottom of the slot. A triangular block made of rubber is embedded in the side wall of the slot.

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