High-sealing-performance inflator pump capable of eliminating axial deviation of piston

Abstract

The utility model discloses a high leakproofness inflator pump capable of eliminating piston axial deviation, which relates to the technical field of inflation equipment, and comprises a cylinder body, a lifting rod is connected in the cylinder body in a sliding manner, the outer wall of the lifting rod is provided with a limiting module, and the limiting module surrounds the outer side wall of the lifting rod. According to the high-sealing-performance inflator pump capable of eliminating axial deviation of the piston, the first sliding block limits the lifting rod on the inner wall of the top of the cylinder body, the second sliding block limits the lifting rod on the inner wall of the middle of the cylinder body, and the third sliding block limits the cylinder body at the bottom of the lifting rod; the lifting rod is limited in three directions through the first sliding block, the second sliding block and the third sliding block, the deflection range of the lifting rod is limited, the center points of the three positions are almost kept consistent with the center line of the lifting rod, the phenomenon that the lifting rod deviates in a cylinder body due to deviation of the downward pressing gravity center of the lifting rod is eliminated, and therefore the technical effect that axial deviation of a piston is eliminated is achieved.

Description

Technical Field

[0001] This utility model relates to the field of air filling equipment technology, and in particular to a high-sealing air filling pump that eliminates piston axial displacement. Background Technology

[0002] An air pump, also called a tire inflator, is a very practical tool. Based on its usage and structural principle, air pumps can be divided into manual, electric, and foot-operated types. When pumping air, the valve of the inflator is opened by atmospheric pressure, allowing air to enter the cylinder. When inflating the tire, the valve is closed by the pressure inside the cylinder, allowing air to enter the tire. It essentially uses the principle of atmospheric pressure to inflate cars, balls, and rubber boats. Using an air pump makes inflation convenient and quick, making our lives more convenient and comfortable.

[0003] Existing air pumps compress air by having the piston reciprocate repeatedly inside the cylinder. However, the slender shape of these pumps can cause piston rod misalignment when the piston is positioned too high or the center of gravity shifts. This can easily damage the piston rod during use, and the user needs to constantly adjust the center of gravity to prevent the pump from functioning properly. Utility Model Content

[0004] This utility model discloses a high-sealing air pump that eliminates piston axial offset, aiming to solve the technical problems of piston rod offset when the piston moves too high and the center of gravity shifts, which makes the piston rod easy to be damaged during use and requires the user to constantly adjust the center of gravity when the piston shifts during use, making it inconvenient to use.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A high-sealing air pump that eliminates piston axial displacement includes a cylinder body. A lifting rod is slidably connected inside the cylinder body, and a limit module is provided on the outer wall of the lifting rod. The limit module surrounds the outer wall of the lifting rod and includes a third slider. A groove is formed on the outer wall of the third slider. A second pulley is rotatably connected to the groove via a bearing. The outer wall of the second pulley is rotatably connected to the inner wall of the cylinder body. A second limit frame is fixedly connected to the top outer wall of the third slider. A second spiral spring is fixedly connected to the top outer wall of the third slider. A second connecting plate is fixedly connected to the top outer wall of the second spiral spring. The outer wall of the second connecting plate is slidably connected to the inner wall of the second limit frame, and the top outer wall of the second connecting plate is movably connected to the top inner wall of the second limit frame.

[0007] The system comprises a first slider, a second slider, a third slider, a second spiral spring, a first spiral spring, and a multi-stage hydraulic rod. When the operator lifts the handle, the handle drives the piston to rise via the lifting rod. The piston then drives the third slider, the second limit bracket, and the second spiral spring to rise. The first pulley inside the second slider slides on the surface of the lifting rod, while the second pulley inside the third slider rises inside the cylinder. After the multi-stage hydraulic rod is pressed and retracted, the first and second spiral springs are compressed. As the lifting rod rises, the limit module moves simultaneously around the lifting rod, protecting the lifting rod inside the cylinder while limiting its range of motion. This reduces the risk of piston displacement and damage inside the cylinder due to pressure center shift during lifting. It also limits the highest point of piston movement, preventing excessive piston lifting and center of gravity deviation.

[0008] In a preferred embodiment, the bottom end of the third slider is provided with a sealing module, and the sealing module includes a piston. The top end of the piston is fixedly connected to the bottom end of the lifting rod. A sealing edge is fixed at the bottom end of the piston. Two grooves are formed on the surface of the sealing edge. Movable plates are movably connected in the grooves. The opposite sides of the two movable plates are rotatably connected to a first fixed block through bearings. The top end of the first fixed block is fixedly connected to the bottom end of the piston. A first limiting spring is installed between the two sides of the movable block and the sealing edge. Second fixed blocks are fixedly connected to both ends of the first limiting spring. The top end of the second fixed block at one end of the first limiting spring is fixedly connected to the bottom end of the sealing edge. The top end of the second fixed block at the other end of the first limiting spring is fixedly connected to the bottom end of the movable plate. Two second limiting springs are fixedly connected to the top end of the movable plate. A third fixed block is fixedly connected to the top end of the second limiting spring. One side of the third fixed block is fixedly connected to the outer wall of the piston.

[0009] The system is equipped with a piston, a second limiting spring, a first limiting spring, a movable plate, and a first fixing block. During the lifting of the handle, which causes the piston to move rapidly upwards, one side of the movable plate is fixed to the bottom of the slider by the first fixing block. The other side of the movable plate deflects downwards due to air pressure within the cylinder during the lifting process. The second limiting spring resets the movable plate and limits its deflection. After the sliding plate deflects, air enters the space at the bottom of the piston from the gap between the movable plate and the sealing edge. When the piston stops moving, the second limiting spring rebounds and pulls the movable plate back to its original position. When the handle is pressed down and the piston moves rapidly downwards, the movable plate experiences upward air pressure, and its top contacts the piston, preventing it from deflecting upwards. A sealed space is formed at the bottom of the piston inside the cylinder. The rapid downward movement of the piston transfers the air in the sealed space to the gas to be inflated through the connector. The sealing and air collection functions are converted through the lifting piston, making the system highly practical.

[0010] In a preferred embodiment, a base is fixedly connected to the bottom outer wall of the cylinder body. A rotating frame module is provided on both sides of the base, and the rotating frame module includes a foot. Limiting grooves are formed on both sides of the base. Limiting blocks are fixedly connected to the inner walls of the limiting grooves. A rotating rod is fixedly connected to the inner wall of the limiting grooves. A foot is rotatably connected to the outer wall of the rotating rod. The bottom outer wall of the foot is movably connected to the surface of the limiting block. Magnetic holes are formed on opposite sides of the two limiting grooves. A magnetic block is fixedly connected to the top outer wall of the foot. The magnetic holes and magnetic blocks are positioned correspondingly and are magnetically connected. The foot can be folded when not in use, making it convenient for users to carry and store.

[0011] The device is equipped with a magnetic block, a magnetic hole, a limiting block, and a foot. When in use, the magnetic block is disengaged from the magnetic hole, and the foot is deflected downwards until it contacts the limiting block. The foot then contacts the ground for stepping. When storing the device after use, the two feet are raised to make contact between the magnetic block and the magnetic hole for magnetic connection.

[0012] As can be seen from the above, the high-sealing air pump provided by this utility model for eliminating piston axial displacement has the following technical effects: the first slider limits the lifting rod on the inner wall of the top of the cylinder, the second slider limits the lifting rod on the inner wall of the middle of the cylinder, and the third slider limits the cylinder at the bottom of the lifting rod. By limiting the lifting rod in three directions through the first, second, and third sliders, the deflection range of the lifting rod is restricted, and the center points of the three points are kept consistent with the center line of the lifting rod. This eliminates the displacement of the lifting rod in the cylinder caused by the displacement of the center of gravity under downward pressure, thereby eliminating the technical effect of piston axial displacement. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the main structure of a high-sealing air pump that eliminates piston axial displacement according to the present invention.

[0014] Figure 2 This is a bottom view of the plan structure of a high-sealing air pump that eliminates piston axial displacement proposed in this utility model.

[0015] Figure 3 This is a cross-sectional view of the limiting module of a high-sealing air pump that eliminates piston axial displacement, as proposed in this utility model.

[0016] Figure 4 This is a schematic diagram of the rotating frame module structure of a high-sealing air pump that eliminates piston axial displacement, as proposed in this utility model.

[0017] Figure 5 This is a schematic diagram of the sealing module structure of a high-sealing air pump that eliminates piston axial displacement, as proposed in this utility model.

[0018] Figure 6This is a schematic diagram of the disassembled structure of the snap-fit ​​module of a high-sealing air pump that eliminates piston axial displacement, as proposed in this utility model.

[0019] In the attached diagram: 1. Cylinder body; 2. Base; 3. Vent pipe; 4. Lifting rod; 5. Handle; 6. Rotating frame module; 601. Leg; 602. Limiting groove; 603. Magnetic hole; 604. Magnetic block; 605. Rotating rod; 606. Limiting block; 7. Limiting module; 701. First slider; 702. Second slider; 703. First pulley; 704. First limiting frame; 705. First coiled spring; 706. First connecting plate; 707. Multi-stage hydraulic rod; 708. Second connecting plate; 709. Second surrounding spring; 710. Second limiting bracket; 711. Third slider; 712. Second pulley; 8. Snap-fit ​​module; 801. First connecting block; 802. Snap-fit ​​block; 803. Second connecting block; 804. Snap-fit ​​groove; 9. Sealing module; 901. Piston; 902. Sealing edge; 903. Movable plate; 904. First fixing block; 905. First limiting spring; 906. Second fixing block; 907. Second limiting spring; 908. Third fixing block; 10. Connector. Detailed Implementation

[0020] 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.

[0021] The high-sealing air pump disclosed in this utility model is mainly used in scenarios where existing devices experience piston rod displacement when the piston is positioned too high or the center of gravity shifts. This causes the piston rod to be easily damaged during use, and the user needs to constantly adjust the center of gravity due to the piston's center of gravity shifting, making it inconvenient to use.

[0022] Reference Figures 1-6A high-sealing air pump for eliminating piston axial displacement includes a cylinder body 1. A lifting rod 4 is slidably connected inside the cylinder body 1, and a limit module 7 is provided on the outer wall of the lifting rod 4. The limit module 7 surrounds the outer wall of the lifting rod 4 and includes a third slider 711. A groove is formed on the outer wall of the third slider 711, and a second pulley 712 is rotatably connected to the groove via a bearing. The outer wall of the second pulley 712 is rotatably connected to the inner wall of the cylinder body 1. A second limit frame 710 is fixedly connected to the top outer wall of the third slider 711. A second spiral spring 709 is fixedly connected to the top outer wall of the third slider 711. A second connecting plate 708 is fixedly connected to the top outer wall of the second spiral spring 709. The outer wall of the second connecting plate 708 is slidably connected to the inner wall of the second limit frame 710. The top outer wall of the second connecting plate 708 is slidably connected to the second limit frame 710. The top inner wall of the first connecting block 801 is movably connected to the second connecting block 803. The top outer wall of the second connecting block 803 is fixedly connected to multiple multi-stage hydraulic rods 707. The telescopic ends of the multiple multi-stage hydraulic rods 707 are fixedly connected to the first connecting plate 706. The top outer wall of the first connecting plate 706 is fixedly connected to the first spiral spring 705. The top outer wall of the first spiral spring 705 is fixedly connected to the second slider 702. The bottom outer wall of the second slider 702 is fixedly connected to the first limiting frame 704. The inner side wall of the first limiting frame 704 is slidably connected to the outer side wall of the first connecting block 801. The bottom inner wall of the first limiting frame 704 is slidably connected to the bottom outer wall of the first connecting block 801. The first slider 701, the second slider 702, and the third slider 711 limit the lifting rod 4 at three points inside the cylinder 1, so that the lifting rod 4 does not deviate when moving inside the cylinder 1, thereby eliminating the axial displacement of the piston.

[0023] Reference Figure 1 , Figure 2 and Figure 3In a preferred embodiment, the bottom end of the third slider 711 is provided with a sealing module 9, and the sealing module 9 includes a piston 901. The top end of the piston 901 is fixedly connected to the bottom end of the lifting rod 4. A sealing edge 902 is fixed to the bottom end of the piston 901. Two grooves are formed on the surface of the sealing edge 902. Movable plates 903 are movably connected in the grooves. The opposite sides of the two movable plates 903 are rotatably connected to a first fixed block 904 through bearings. The top end of the first fixed block 904 is fixedly connected to the bottom end of the piston 901. A first limiting spring 905 is installed between the two sides of the movable plates 903 and the sealing edge 902. The two ends of the first limiting spring 905 are fixedly connected to... There is a second fixing block 906. The top end of the second fixing block 906 at one end of the first limiting spring 905 is fixedly connected to the bottom end of the sealing edge 902. The top end of the second fixing block 906 at one end of the first limiting spring 905 is fixedly connected to the bottom end of the movable plate 903. Two second limiting springs 907 are fixedly connected to the top end of the movable plate 903. A third fixing block 908 is fixedly connected to the top end of the second limiting springs 907. One side of the third fixing block 908 is fixedly connected to the outer wall of the piston 901. The rotation of the movable plate 903 causes the sealing module 9 to deflect and collect air when the handle 5 is raised. When the handle 5 is pressed down, it resists the upward pressure to form a sealing state and squeeze the air.

[0024] Reference Figure 1 , Figure 4 and Figure 5 In a preferred embodiment, a base 2 is fixedly connected to the bottom outer wall of the cylinder 1. Rotating frame modules 6 are provided on both sides of the base 2, and each rotating frame module 6 includes a foot 601. Limiting grooves 602 are formed on both sides of the base 2. Limiting blocks 606 are fixedly connected to the inner walls of the limiting grooves 602. A rotating rod 605 is fixedly connected to the inner wall of the limiting grooves 602. The foot 601 is rotatably connected to the outer wall of the rotating rod 605. The bottom outer wall of the foot 601 is movably connected to the surface of the limiting block 606. Magnetic holes 603 are formed on opposite sides of the two limiting grooves 602. A magnetic block 604 is fixedly connected to the top outer wall of the foot 601. The magnetic holes 603 and magnetic blocks 604 are correspondingly positioned and magnetically connected. After use, the foot 601 is retracted, and the magnetic blocks 604 on the foot 601 are magnetically connected to the corresponding magnetic holes 603, facilitating storage for the user.

[0025] Working principle: During use, the user presses both sides of the locking block 802 to disengage it from the slot 804. Then, the connector 10 is fixed to the inflation port of the object to be inflated. Next, the air pump is placed on the ground, and the magnetic block 604 at the foot 601 is manually separated from the magnetic hole 603. The foot 601 is placed on the ground. At this time, the user steps on the foot 601 with both feet and holds the handle 5 to lift and press the lifting rod 4 in a reciprocating motion to inflate the object. When the user holds the handle 5 to lift the lifting rod 4, the piston 901 moves upward, driving the third slider 711 to move upward. The second pulley 712 slides along the inner wall of the cylinder 1, and the first pulley 703 inside the second slider 702 rotates on the surface of the lifting rod 4. The multi-stage hydraulic rod 707 retracts. After the multi-stage hydraulic rod 707 retracts, the first pulley 703 on both sides of the multi-stage hydraulic rod 707 is squeezed. The first limiting spring 907 is stretched by the second limiting spring 907 when one side of the movable block is pressed downward by the surrounding spring 705 and the second surrounding spring 709. The first limiting spring 905 limits the bottom of the movable plate 903. At the same time, air passes through the piston 901. When the user stops the upward force, the second limiting spring 907 rebounds. The side wall of the movable plate 903 contacts the side wall of the sealing edge 902. A sealed space is formed at the bottom of the piston 901. The first surrounding spring 705 and the second surrounding spring 709 extend back. When the lifting rod 4 is pressed down by the hand handle 5, the piston 901 drives the third slider 711 to move downward. The slider drives the bottom end of the multi-stage hydraulic rod 707 to move downward through the second surrounding spring 709 and the second connecting block 803. The multi-stage hydraulic rod 707 is raised. The piston 901 moves down in the sealed space to compress the air, which is discharged into the object that needs to be inflated through the connector 10.

[0026] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. The substitutions may be replacements of some structures, devices, or method steps, or they may be complete technical solutions. Equivalent substitutions or modifications made based on the technical solution and inventive concept of this utility model should all be covered within the protection scope of this utility model.

Claims

1. A high-sealing air pump that eliminates piston axial displacement, comprising a cylinder (1), characterized in that, A lifting rod (4) is slidably connected inside the cylinder (1), and a limit module (7) is provided on the outer wall of the lifting rod (4). The limit module (7) surrounds the outer wall of the lifting rod (4), and the limit module (7) includes a third slider (711). A groove is provided on the outer wall of the third slider (711), and a second pulley (712) is rotatably connected to the groove through a bearing. The outer wall of the second pulley (712) is rotatably connected to the inner wall of the cylinder (1). The top outer wall of the third slider (711) is fixedly connected to a second limiting frame (710), the top outer wall of the third slider (711) is fixedly connected to a second spiral spring (709), the top outer wall of the second spiral spring (709) is fixedly connected to a second connecting plate (708), the outer side wall of the second connecting plate (708) is slidably connected to the inner side wall of the second limiting frame (710), and the top outer wall of the second connecting plate (708) is movably connected to the top inner wall of the second limiting frame (710).

2. The high-sealing air pump for eliminating piston axial displacement according to claim 1, characterized in that, The top outer wall of the second limiting frame (710) is fixedly connected to multiple multi-stage hydraulic rods (707), and the telescopic ends of the multiple multi-stage hydraulic rods (707) are fixedly connected to the first connecting plate (706). The top outer wall of the first connecting plate (706) is fixedly connected to the first spiral spring (705), and the top outer wall of the first spiral spring (705) is fixedly connected to the second slider (702). The bottom outer wall of the second slider (702) is fixedly connected to the first limiting frame (704). The inner side wall of the first limiting frame (704) is slidably connected to the outer side wall of the first connecting block (801), and the bottom inner wall of the first limiting frame (704) is slidably connected to the bottom outer wall of the first connecting block (801).

3. The high-sealing air pump for eliminating piston axial displacement according to claim 2, characterized in that, The top outer wall of the first limiting frame (704) and the top outer wall of the first surrounding spring (705) are fixedly connected to the second slider (702). The outer side wall of the second slider (702) is fixedly connected to the inner side wall of the cylinder (1). The inner side wall of the second slider (702) is provided with multiple grooves. The first pulley (703) is rotatably connected to the grooves through bearings. The outer side walls of the multiple first pulleys (703) are rotatably connected to the outer side wall of the lifting rod (4). The top inner wall of the cylinder (1) is fixedly connected to the first slider (701). The inner side wall of the first slider (701) is slidably connected to the outer wall of the lifting rod (4). The outer side walls of the second slider (702) and the third slider (711) do not contact the inner side wall of the cylinder (1).

4. A high-sealing air pump for eliminating piston axial displacement according to claim 1, characterized in that, The bottom end of the third slider (711) is provided with a sealing module (9), and the sealing module (9) includes a piston (901). The top end of the piston (901) is fixedly connected to the bottom end of the lifting rod (4). The bottom end of the piston (901) is fixed with a sealing edge (902). Two grooves are opened on the surface of the sealing edge (902). Movable plates (903) are movably connected in the grooves. The opposite sides of the two movable plates (903) are rotatably connected in the first fixed block (904) through bearings. The top end of the first fixed block (904) is fixedly connected to the bottom end of the piston (901). The two sides of the movable plates (903) are installed between the sealing edge (902) and the sealing edge (902). The first limiting spring (905) has two ends fixedly connected to the second fixing blocks (906). The top end of the second fixing block (906) at one end of the first limiting spring (905) is fixedly connected to the bottom end of the sealing edge (902). The top end of the second fixing block (906) at the other end of the first limiting spring (905) is fixedly connected to the bottom end of the movable plate (903). The top end of the movable plate (903) is fixedly connected to two second limiting springs (907). The top end of the second limiting springs (907) is fixedly connected to a third fixing block (908). One side of the third fixing block (908) is fixedly connected to the outer wall of the piston (901).

5. A high-sealing air pump for eliminating piston axial displacement according to claim 1, characterized in that, The bottom outer wall of the cylinder (1) is fixedly connected to a base (2). The base (2) is provided with rotating frame modules (6) on both sides. The rotating frame module (6) includes a foot (601). Limiting grooves (602) are opened on both sides of the base (2). Limiting blocks (606) are fixedly connected to the inner wall of the limiting grooves (602). A rotating rod (605) is fixedly connected to the inner wall of the limiting grooves (602). The foot (601) is rotatably connected to the outer wall of the rotating rod (605). The bottom outer wall of the foot (601) is movably connected to the surface of the limiting block (606). Magnetic holes (603) are opened on opposite sides of the two limiting grooves (602). A magnetic block (604) is fixedly connected to the top outer wall of the foot (601). The magnetic holes (603) and the magnetic blocks (604) are in corresponding positions and are magnetically connected.

6. A high-sealing air pump for eliminating piston axial displacement according to claim 1, characterized in that, A vent pipe (3) is fixedly connected to the outer wall of the cylinder (1), and a connector (10) is fixedly connected to the other end of the vent pipe (3). A handle (5) is fixedly connected to the top outer wall of the lifting rod (4).

7. A high-sealing air pump for eliminating piston axial displacement according to claim 6, characterized in that, The cylinder body (1) is provided with a snap-fit ​​module (8) on its surface, and the snap-fit ​​module (8) includes a first connecting block (801), a slot (804) is provided in the first connecting block (801), a snap-fit ​​block (802) is snapped in the slot (804), and a second connecting block (803) is fixedly connected to one end of the snap-fit ​​block (802), and the second connecting block (803) is fixedly connected to the surface of the vent pipe (3).

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