Inflating device

Abstract

The application relates to the technical field of air pump inflation, in particular to an inflation device which comprises a shell. A motor, a gas conveying component, a quick connection nozzle, a resettable pressing mechanism, a travel switch and a lever transmission assembly are arranged in the shell. The quick connection nozzle is connected with the output end of the gas conveying component and is used for detachably connecting the gas nozzle of an object to be inflated; the resettable pressing mechanism has an initial position and an energized position; the travel switch is electrically connected with the motor control circuit and is used for controlling the start and stop of the motor; one end of the lever transmission assembly is linked with the resettable pressing mechanism, and the other end is linked with the gas conveying component. When the resettable pressing mechanism is pressed from the initial position to the energized position by an external force, the travel switch is pressed to make the motor and the control circuit conductive, and the gas conveying component is driven to displace to the direction of the quick connection nozzle through the lever transmission assembly, so that the quick connection nozzle is pressed against the gas nozzle of the object to be inflated to form a sealed connection, thereby solving the problem that the existing inflation pump cannot realize the synchronization operation of the gas nozzle sealed connection and the motor start.

Description

Technical Field

[0001] This application relates to the technical field of air pump inflation, and more particularly to an inflation device. Background Technology

[0002] In the field of inflation equipment, especially in the use of portable electric inflation devices (such as air pumps), traditional products generally suffer from cumbersome operation procedures and poor functional integration. Specifically, existing inflation devices typically require two separate core operations: first, sealing the quick-connect fitting to the valve of the object to be inflated (such as a tire or balloon); and second, manually starting the motor to activate the inflation function. This separate operation not only increases the complexity for users—for example, users must first laboriously tighten the quick-connect fitting onto the valve and then separately press the start button or switch, resulting in low operational efficiency—but more importantly, the asynchronous connection and pump start-up can lead to the following problems: if the motor starts before the connection is fully sealed, gas leakage will occur, affecting inflation efficiency; if the start-up is delayed or there is poor contact after the connection is completed, the connection may detach due to a sudden increase in air pressure, potentially posing a safety hazard.

[0003] Therefore, how to achieve the synchronized operation of "sealed connection between air nozzles" and "motor start" has become a technical problem that needs to be solved in existing inflation devices. Utility Model Content

[0004] This application provides an inflation device to solve the problem in the prior art that the sealing connection between the air nozzles and the motor start-up cannot be synchronized.

[0005] In a first aspect, an inflation device includes a housing, the housing comprising:

[0006] An air pump assembly, the air pump assembly including a motor and a gas delivery component driven by the motor;

[0007] A quick-connect nozzle is connected to the output end of the gas delivery component and is used for detachably connecting the nozzle to the object to be inflated.

[0008] A resettable pressing mechanism is disposed within the housing and has an initial position and an energized position;

[0009] Limit switch, which is electrically connected to the control circuit of the motor, is used to control the start and stop of the motor, and the limit switch is set in the pressing direction of the resettable pressing mechanism;

[0010] The lever transmission assembly is hinged inside the housing, with one end linked to the resettable pressing mechanism and the other end linked to the gas delivery component;

[0011] in:

[0012] When the resettable pressing mechanism is moved from its initial position to the energized position by external pressing,

[0013] The resettable pressing mechanism triggers the limit switch, connecting the motor to the control circuit, and drives the gas delivery component to move towards the quick-connect nozzle via the lever transmission assembly, so that the quick-connect nozzle presses against the nozzle of the object to be inflated to form a sealed connection.

[0014] Furthermore, the resettable pressing mechanism includes a first component and a second component that are nested together.

[0015] The first component is a sleeve, and the second component is a movable plunger;

[0016] When the resettable pressing mechanism is pressed externally, the movable plunger moves axially along the inner wall of the sleeve.

[0017] Furthermore, the first component is connected to a hook-holding member;

[0018] The second component has a slide rail on the side facing the hook holder;

[0019] During the axial relative movement of the first and second components under external pressure, the end of the hook-holding member is embedded in the slide rail and moves along the slide rail. Furthermore, the limit switch includes a first conductive member and a second conductive member;

[0020] The slide is provided with a first guide slope, a second guide slope and a third guide slope in sequence, and a limiting part is formed between the second guide slope and the third guide slope;

[0021] The first guide ramp is configured such that when the hook moves toward it, the first conductive member moves closer to the second conductive member;

[0022] The second guide ramp is configured to allow the first conductive member and the second conductive member to transition from initial contact to stable contact when the hook moves toward it, forming an electrical conduction path;

[0023] The limiting part is configured to constrain the position of the hook member, so that the first conductive member and the second conductive member maintain stable contact, thereby maintaining the energized operation of the motor;

[0024] The third guide ramp is configured to separate the first conductive member from the second conductive member when the hook moves toward the exit of the slide, thereby cutting off the electrical conduction path and stopping the motor.

[0025] Furthermore, the resettable pressing mechanism includes a reset elastic element, one end of which is connected to the first component, and the other end of which is connected to the second component.

[0026] When the external pressing action is removed, the reset elastic element drives the first component and the second component back to their initial positions.

[0027] Furthermore, the lever transmission assembly includes:

[0028] A lever having a fulcrum;

[0029] The first link has one end connected to the second component and the other end connected to the first end of the lever fulcrum.

[0030] The second link has one end pivotally connected to the quick-connect nozzle and the other end connected to the second end of the lever fulcrum.

[0031] When the first component and the second component move axially relative to each other under external pressing, the lever fulcrum is driven to rotate around its fulcrum by the first connecting rod.

[0032] The lever fulcrum drives the valve in the gas delivery component to squeeze the quick-connect nozzle via the second connecting rod.

[0033] Furthermore, the quick-connect fitting has a through hole, and the inner wall of the through hole has an internal thread.

[0034] Furthermore, the quick-connect fitting is made of an elastic material.

[0035] Furthermore, the air pump assembly also includes an air handling component;

[0036] The air handling component includes a cylinder in which a piston is disposed;

[0037] The piston is connected to a transmission rod;

[0038] The output shaft of the motor is equipped with a drive gear at its end;

[0039] The driving gear is meshed with a driven gear;

[0040] The driven gear is connected to the transmission rod via an eccentric shaft.

[0041] Furthermore, the housing has opposing top and bottom walls, with the first component fixedly mounted on the top wall and the second component exposed on the bottom wall.

[0042] The technical solutions provided in the application embodiments have the following advantages compared with the prior art:

[0043] This inflation device solves the problems of low efficiency, cumbersome operation, and potential gas leakage or poor contact caused by the separate and step-by-step operation of "sealing the quick-connect nozzle with the air nozzle of the object to be inflated" and "starting the motor" in traditional inflation devices, through the integrated linkage design of a resettable pressing mechanism and a lever transmission component. Specifically, the axial movement of the resettable pressing mechanism under external pressure triggers a limit switch to connect the control circuit and the motor, starting the motor; and the lever transmission component drives the gas delivery component to move towards the quick-connect nozzle, so that the quick-connect nozzle squeezes the air nozzle of the object to be inflated to complete the sealing connection. This synchronous linkage design ensures that the operation is completed in one step, simplifies the usage steps, and improves inflation efficiency; at the same time, the coordinated cooperation of the mechanical structure reduces the connection gap or circuit contact instability caused by step-by-step operation, enhances the sealing and reliability of the inflation process, and thus brings the beneficial effects of convenient operation, efficient inflation, and stable and safe inflation. Attached Figure Description

[0044] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0045] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0046] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0047] Figure 1 This is a cross-sectional structural diagram of the inflation device of this application;

[0048] Figure 2 This is a schematic diagram of the air pump assembly of this application;

[0049] Figure 3 This is a schematic diagram of the repositionable pressing mechanism of this application;

[0050] Figure 4 This is a schematic diagram of the slide structure of this application;

[0051] Figure 5 This is a schematic diagram of the quick-connect fitting structure of this application.

[0052] Explanation of reference numerals in the attached figures:

[0053] 1. Housing; 11. Top wall; 12. Bottom wall; 2. Air pump assembly; 21. Gas delivery component; 212. Valve; 22. Air treatment component; 221. Cylinder; 222. Piston; 223. Drive rod; 23. Motor; 231. Drive gear; 232. Driven gear;

[0054] 3. Limit switch; 31. First conductive component; 32. Second conductive component;

[0055] 5. Resettable pressing mechanism; 51. First component; 52. Second component; 521. Slide; 5211. Inlet; 5212. Outlet; 522. First guide ramp; 523. Second guide ramp; 524. Third guide ramp; 525. Limiting part; 53. Hook; 54. Reset elastic element;

[0056] 6. Lever transmission assembly; 61. Lever fulcrum; 62. First connecting rod; 63. Second connecting rod;

[0057] 7. Quick-connect fitting; 71. Through hole; 72. Internal thread; 8. Initial position; 9. Power-on position. Detailed Implementation

[0058] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0059] The following disclosure provides numerous different embodiments or examples for implementing various structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0060] For ease of description, spatial relative terms may be used in the text to describe the relative position or movement of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "front," "back," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure undergoes a positional flip, orientation change, or change of motion, these directional indications will change accordingly. For instance, an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions), and the spatial relative descriptors used in the text will be interpreted accordingly.

[0061] To address the problem of the inability to synchronize the sealing connection of the air nozzle and the start-up of the motor in the existing technology, the applicant provides an inflation device that achieves synchronized operation of the quick-connect nozzle 7 connecting to the air nozzle of the object to be inflated and the start-up of the motor 23, effectively improving inflation efficiency and ease of use.

[0062] like Figures 1 to 5 As shown, the inflation device includes a housing 1, which is a hollow structure with opposing top walls 11 and bottom walls 12, providing space for the installation and protection of various components. The housing 1 has a roughly elongated shape, and an air pump assembly 2 is arranged sequentially along its length. The air pump assembly 2 includes a motor 23 and a gas delivery component 21 connected to the motor. A quick-connect nozzle 7 is connected to the output end of the gas delivery component 21 and is used for detachably connecting the nozzle of the object to be inflated. A resettable pressing mechanism 5 is disposed within the housing 1 and has an initial position and an energized position. A limit switch 3 includes a first conductive component 31 and a second conductive component 32. This limit switch 3 is electrically connected to the control circuit of the motor 23 and is used to control the start and stop of the motor 23. The limit switch 3 is positioned in the pressing direction of the resettable pressing mechanism 5. A lever transmission assembly 6 is hinged within the housing 1, with one end linked to the resettable pressing mechanism 5 and the other end linked to the gas delivery component 21.

[0063] When the resettable pressing mechanism 5 is pressed by an external force and moves from the initial position to the energized position, the resettable pressing mechanism 5 triggers the limit switch 3, which connects the motor 23 to the control circuit and drives the gas delivery component 21 to move towards the quick connector 7 through the lever transmission assembly 6, so that the quick connector 7 presses against the nozzle of the object to be inflated to form a sealed connection.

[0064] Detailed, such as Figure 2 As shown, the air pump assembly 2 is assembled inside the housing 1 and is the core component for achieving the inflation function. It includes a motor 23, an air handling component 22, and a gas delivery component 21. The motor 23 serves as the power source and is electrically connected to the control circuit. Its output end is equipped with a drive gear 231, which meshes with a driven gear 232. The air handling component 22 includes a cylinder 221, within which a piston 222 is disposed. The piston 222 is connected to a transmission rod 223, which is eccentrically connected to the driven gear 232.

[0065] On the power output side of motor 23, when motor 23 starts working, the power is transmitted sequentially: motor 23 drives the drive gear 231 at the output end to rotate, drive gear 231 drives the meshing driven gear 232, and the transmission rod 223 is connected to the eccentric shaft of driven gear 232. Therefore, driven gear 232 then converts the power into the power to cause piston 222 to reciprocate within cylinder 221. Since piston 222 is connected to transmission rod 223, this reciprocating motion ultimately drives gas delivery component 21 to complete the inflation operation.

[0066] Furthermore, since the air treatment component 22 is connected to the gas delivery component 21, the gas generated by the air treatment component 22 is ultimately delivered to the object to be inflated through the quick-connect nozzle 7 connected to the gas delivery component 21.

[0067] On the power input side of motor 23, a limit switch 3 is electrically connected to the control circuit that is electrically connected to motor 23 to supply power to motor 23. The limit switch 3 is specifically positioned in the pressing direction of the resettable pressing mechanism 5. Specifically, the limit switch 3 is installed inside the housing 1 and contacts the protrusion on the bottom wall 12, and is arranged correspondingly to the resettable pressing mechanism 5 in the longitudinal space of the housing 1.

[0068] When the resettable pressing mechanism 5 is displaced by external pressure, its action directly acts on the limit switch 3, triggering the limit switch 3 by compression. The limit switch 3 includes a first conductive member 31 and a second conductive member 32 that are elastically connected.

[0069] During use, when the resettable pressing mechanism 5 is pressed externally, it will move from the initial position 8 to the energized position 9:

[0070] On the one hand, the action of the resettable pressing mechanism 5 will cause the first conductive component 31 and the second conductive component 32 to gradually approach and contact each other, forming a stable electrical conduction path, thereby enabling the motor 23 to be connected to the power supply and start running;

[0071] On the other hand, the displacement of the resettable pressing mechanism 5 is transmitted to the gas delivery component 21 through the lever transmission component 6, driving the gas delivery component 21 to move towards the quick connector 7, thereby causing the quick connector 7 to be tightly pressed against the air nozzle of the object to be inflated, forming a reliable sealing connection, thereby realizing the inflation of the object to be inflated.

[0072] In summary, this technical solution effectively solves the problems in the prior art where the quick-connect nozzle 7 of the gas delivery component 21 and the nozzle of the object to be inflated require separate steps for sealing and starting the motor 23. These steps involve either sealing before starting the motor 23 or starting the motor 23 before manually fixing the nozzle, increasing the number of steps and potentially causing gas leakage due to improper sequence of steps. Forgetting to start the motor 23 after sealing delays the inflation process. This device, through a synchronous linkage design of lever transmission and circuit connection, achieves simultaneous sealing and power-on start with a single action of the "press-resetable pressing mechanism 5." This simplifies the operation, eliminating the need for users to focus on the sequence of steps and avoiding gas leakage caused by separate steps. It significantly improves the convenience and efficiency of inflation operations, reduces the probability of malfunctions due to operational errors, and makes the entire inflation process smoother and more stable.

[0073] In one embodiment of this utility model, such as Figure 3 and Figure 4 As shown, the resettable pressing mechanism 5 includes a first component 51 and a second component 52 that are nested together; wherein, the first component 51 is fixedly assembled on the top wall 11, and the second component 52 is connected to the bottom wall 12.

[0074] In this embodiment, the first component 51 is a sleeve, and the second component 52 is a movable plunger; under external pressing action, the movable plunger of the resettable pressing mechanism 5 moves axially along the inner wall of the sleeve.

[0075] Furthermore, the resettable pressing mechanism 5 includes a reset elastic element 54. In this embodiment, the reset elastic element 54 is disposed in the sleeve. One end of the reset elastic element 54 is connected to the first component 51, and the other end of the reset elastic element 54 is connected to the second component 52. When the external pressing action is removed, the reset elastic element 54 drives the first component 51 and the second component 52 to return to the initial position 8.

[0076] In this embodiment, the sleeve is fixed to the top wall 11 of the housing 1, and the movable plunger is fixed to the second component 52 of the housing 1. The two are coaxially arranged to form a precise axial alignment. When the user grips the housing 1 and pinches the outer surfaces of the top wall 11 and the second component 52, the sleeve and the movable plunger will move relative to each other axially through force transmission. Specifically, the movable plunger slides axially along the inner wall of the sleeve, and the reset elastic element 54 continuously contracts under the pressure. This sleeve structure ensures the linear accuracy of the relative movement through the guiding effect of the inner wall, effectively avoiding offset or jamming.

[0077] When the external pressure is removed, the reset elastic element 54 releases its elastic potential energy, driving the sleeve and movable plunger to move in opposite directions along the axial direction, thus resetting the resettable pressing mechanism 5 to its initial position 8. During this process, the first conductive element 31 disengages from the second conductive element 32, reliably cutting off the path between the control circuit and the motor 23. The motor 23 immediately stops operating due to the loss of power supply, and the air pump assembly 2 simultaneously ceases operation, safely ending the entire inflation process and ensuring the timeliness and reliability of the power-off action.

[0078] Furthermore, the first component 51 is connected to a hook 53; the second component 52 has a slide 521 on the side facing the hook 53; the slide 521 has a U-shaped structure. During the axial relative movement of the first component 51 and the second component 52 under external pressure, the end of the hook 53 is embedded in the slide 521 and moves along the slide 521.

[0079] In use, by embedding the end of the hook 53 connected to the first component 51 into the slide 521 of the second component 52 and moving along it, the relative movement of the two is made more orderly by using the constraint and guidance of the slide 521 on the hook 53. This design ensures that the first component 51 and the second component 52 will not misalign or separate during axial movement, improving the continuity and stability of the operation of the resettable pressing mechanism 5.

[0080] Furthermore, the slide 521 is provided with a first guide slope 522, a second guide slope 523 and a third guide slope 524 in sequence, and a limiting part 525 is formed between the second guide slope 523 and the third guide slope 524.

[0081] The first guide ramp 522 is configured such that when the hook moves toward it, the first conductive member 31 moves closer to the second conductive member 32; the second guide ramp 523 is configured such that when the hook moves along it, the first conductive member 31 and the second conductive member 32 gradually move closer to each other and then make stable contact, forming an electrical conduction path; the limiting part 525 is configured to constrain the position of the hook, so that the first conductive member 31 and the second conductive member 32 maintain stable contact, thereby maintaining the energized operation of the motor 23; the third guide ramp 524 is configured such that when the hook moves toward the outlet 5212 of the slide 521, the first conductive member 31 and the second conductive member 32 separate, thereby cutting off the electrical conduction path and stopping the motor 23.

[0082] The detailed usage process is as follows:

[0083] When the user squeezes the housing 1 of the inflation device, the sleeve of the resettable pressing mechanism 5 and the movable plunger move axially relative to each other, causing the hook 53 of the first component 51 to enter from the inlet end 5211 of the slide 521. As the squeezing pressure increases, the hook 53 slides along the track of the slide 521 toward the first guide slope 522, and its displacement component drives the first conductive component 31 to synchronously approach the second conductive component 32 through mechanical linkage. When the hook 53 reaches the end of the first guide slope 522, the two conductive components are in a critical conductive state.

[0084] As pressure continues to be applied, the hook 53 enters the meandering section formed by the first guide slope 522 and the second guide slope 523 along the slope of the first guide slope 522. This design provides a gradual contact process for the first conductive member 31 and the second conductive member 32 by extending the sliding path. When the hook 53 contacts the second guide slope 523, the first conductive member 31 and the second conductive member 32 begin to make physical contact and form a circuit, that is, at this time the resettable pressing mechanism 5 is located in the energized position 9. As the hook 53 continues to slide along the second guide slope 523, the contact pressure gradually increases, ensuring stable circuit conduction.

[0085] When the hook 53 slides into the limiting part 525, the user will feel a distinct "sticking sensation," indicating that the circuit is fully connected and locked. At this time, the geometric constraint of the limiting part 525 prevents the hook 53 from accidentally sliding out, ensuring that the first conductive member 31 and the second conductive member 32 maintain stable contact and keep the motor 23 running continuously.

[0086] After inflation, the user gently presses and releases the housing 1 again. The hook 53, under the action of the reset elastic member 54, disengages from the limiting part 525 and slides down the third guide slope 524 to the outlet 5212 of the slide 521. Simultaneously, the first conductive member 31 loses the squeezing force generated by the hook 53 locking at the limiting part 525. Due to its own elasticity, the first conductive member 31 gradually separates from the second conductive member 32 to reliably disconnect the circuit. When the reset elastic member 54 returns to its initial state, the hook 53 remains at the inlet of the slide 521, and the device returns to standby mode, awaiting the next operation. The entire process achieves an efficient operating logic of "squeeze-to-start → lock-on → gentle-press-to-reset" through a mechanical structure.

[0087] In one embodiment of this utility model, such as Figure 5 As shown, the lever transmission assembly 6 includes: a lever, rotatably mounted inside the housing 1 via a lever fulcrum 61; a first connecting rod 62, one end of which is connected to the second component 52, and the other end of which is connected to the first end of the lever; a second connecting rod 63, one end of which is pivotally connected to the quick connector 7, and the other end of which is connected to the second end of the lever; when the first component 51 and the second component 52 move axially relative to each other under external pressure, the lever is driven to rotate around the lever fulcrum 61 via the first connecting rod 62; the lever drives the valve 212 in the gas delivery component 21 to press the quick connector 7 via the second connecting rod 63.

[0088] In this embodiment, the bottom wall 12 has a through hole, the shape of which is adapted to the shape of the first connecting rod 62. When the first connecting rod 62 is assembled in the housing 1, it becomes part of the bottom wall 12. The first connecting rod 62 and the through hole of the bottom wall 12 are in clearance fit, preserving axial movement space. When the user presses the bottom wall 12 from the outside of the housing 1, the pressure acts directly on the movable first connecting rod 62, causing it to move axially along the through hole, thereby pushing the second component 52 (movable plunger) to slide relative to the first component 51 (sleeve), ensuring that the resettable pressing mechanism 5 can be driven by external pressure. This design facilitates the user to press the resettable pressing mechanism 5 from the outside of the housing 1, and also facilitates the application of a pressing force to the lever transmission assembly 6.

[0089] In this embodiment, the lever fulcrum 61 is a hinge shaft that is pivotally connected to the interior of the housing 1. When subjected to force, it can rotate with the inner wall of the housing 1 as the lever fulcrum 61.

[0090] In detail, during inflation, as the resettable pressing mechanism 5 is subjected to external squeezing force, this squeezing force is transmitted to the lever via the first connecting rod 62. The lever fulcrum 61 at the lever is subjected to an upward squeezing force from the second component 52. The connection between the first connecting rod 62 and the second connecting rod 63 is fixedly connected to the lever fulcrum 61. Therefore, the connection between the first connecting rod 62 and the second connecting rod 63 rotates around the lever fulcrum 61, and the second connecting rod 63 moves in the opposite direction to the first connecting rod 62. Since the other end of the second connecting rod 63 is pivotally connected to the valve 212 in the gas delivery component, as the second connecting rod 63 moves outward, it drives the valve 212 to move towards the object to be inflated. In this way, when the resettable pressing mechanism 5 is squeezed, the valve 212 squeezes the quick-connect nozzle 7, so that the quick-connect nozzle 7 automatically seals with the valve of the object to be inflated, ensuring the airtightness of the inflation.

[0091] More specifically, when the resettable pressing mechanism 5 is subjected to external pressure, the second component 52 (movable plunger) displaces upward and transmits the displacement to the lever assembly via the first connecting rod 62. At this time, the lever fulcrum 61 serves as a fixed rotation center, converting the linear motion of the first connecting rod 62 into a rotational torque around the lever fulcrum 61. Since the first connecting rod 62 and the second connecting rod 63 are pivotally connected at the lever end, this rotational torque drives the second connecting rod 63 to swing away from the inflation device body.

[0092] The swing of the second link 63 is transmitted to the valve 212 through the pivot structure, forcing the valve 212 to move synchronously toward the nozzle of the object to be inflated. When the resettable pressing mechanism 5 reaches the energized position 9, the contact surface between the valve 212 and the nozzle generates a sealing preload, forming a reliable airtight connection. During this process, the lever assembly amplifies the force through a lever arm ratio design, ensuring that a small pressing force can generate sufficient sealing pressure.

[0093] When the external squeezing action is removed, the reset elastic element 54 in the resettable pressing mechanism 5 needs to return to its original state according to its own elastic properties. The elastic force of the reset elastic element 54 is transmitted to the first connecting rod 62 through the second component 52, pushing the first connecting rod 62 to move along the through hole of the bottom wall 12 towards the outside of the housing 1, and at the same time driving the lever transmission assembly 6 to reset, so that the valve 212 and the quick connector 7 are disengaged from the squeezing state.

[0094] It should be noted that the position of the lever fulcrum 61 directly affects the transmission efficiency and sealing effect. In this embodiment, the lever fulcrum 61 is positioned near the end of the second connecting rod 63, and the length of the first connecting rod 62 is greater than the length of the second connecting rod 63. Preferably, the length of the first connecting rod 62 is three or four times that of the second connecting rod 63, etc., and the specific length can be adjusted according to actual use.

[0095] This design allows the second linkage 63 to obtain greater driving force to achieve a greater swing amplitude, thereby enabling full displacement of the valve 212 within a limited pressing stroke. This mechanical structure design cleverly synchronizes the two actions of circuit conduction and air circuit sealing, significantly improving operational convenience and inflation reliability.

[0096] To ensure a tighter connection between the valve 212 and the valve of the object to be inflated, the quick-connect fitting 7 has a through hole 71 with internal threads 72 on its inner wall. The quick-connect fitting 7 is made of a flexible material.

[0097] It should be understood that the design of the quick-connect fitting 7 achieves dual optimization in terms of connection stability and sealing performance:

[0098] On the one hand, the internal thread 72 on the inner wall of the quick connector 7 can precisely engage with the external thread of the air nozzle of the object to be inflated. This not only increases the friction of the contact surfaces of the two through the spiral structure, preventing slippage during the connection process, but also enables the air nozzle and quick connector 7 to be quickly fixed through the thread tightening operation, simplifying the assembly process.

[0099] On the other hand, the quick-connect nozzle 7 is made of elastic materials such as rubber. When the valve 212 squeezes the quick-connect nozzle 7 under the action of the lever transmission assembly 6, the elastic material will deform due to the force. This deformation can fully fill any tiny gaps that may exist on the contact surface between the valve and the quick-connect nozzle 7, greatly improving the sealing area and the tightness of the fit, blocking the gas leakage path from the physical structure, and ensuring the airtightness of the connection during inflation.

[0100] Therefore, the combination of mechanical fixation of the internal thread 72 and deformation sealing of the elastic material not only ensures the firmness of the connection, but also enhances the air circuit sealing, effectively solving the problems of easy loosening and air leakage in traditional quick-connect structures.

[0101] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0102] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application 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. Therefore, they should not be construed as limitations on this application.

[0103] 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0104] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a 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. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0105] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0106] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. The illustrative expressions of the above terms in this specification should not be construed as necessarily referring to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0107] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Since these modifications and variations fall within the scope of the claims and their equivalents, this application also intends to include these modifications and variations.

[0108] The above describes specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An inflation device, comprising a housing, characterized in that, The housing includes: An air pump assembly, the air pump assembly including a motor and a gas delivery component driven by the motor; A quick-connect nozzle is connected to the output end of the gas delivery component and is used for detachably connecting the nozzle to the object to be inflated. A resettable pressing mechanism is disposed within the housing and has an initial position and an energized position; Limit switch, which is electrically connected to the control circuit of the motor, is used to control the start and stop of the motor, and the limit switch is set in the pressing direction of the resettable pressing mechanism; The lever transmission assembly is hinged inside the housing, with one end linked to the resettable pressing mechanism and the other end linked to the gas delivery component; in: When the resettable pressing mechanism is moved from its initial position to the energized position by external pressing, The resettable pressing mechanism triggers the limit switch, connecting the motor to the control circuit, and drives the gas delivery component to move towards the quick-connect nozzle via the lever transmission assembly, so that the quick-connect nozzle presses against the nozzle of the object to be inflated to form a sealed connection.

2. The inflation device according to claim 1, characterized in that: The resettable pressing mechanism includes a first component and a second component that are nested together. The first component is a sleeve, and the second component is a movable plunger; When the resettable pressing mechanism is pressed externally, the movable plunger moves axially along the inner wall of the sleeve.

3. An inflation device according to claim 2, characterized in that: The first component is connected to a hook-holding member; The second component has a slide rail on the side facing the hook holder; During the axial relative movement of the first component and the second component under external pressure, the end of the hook is embedded in the slide and moves along the slide.

4. An inflation device according to claim 3, characterized in that: The limit switch includes a first conductive component and a second conductive component; The slide is provided with a first guide slope, a second guide slope and a third guide slope in sequence, and a limiting part is formed between the second guide slope and the third guide slope; The first guide ramp is configured such that when the hook moves toward it, the first conductive member moves closer to the second conductive member; The second guide ramp is configured to allow the first conductive member and the second conductive member to transition from initial contact to stable contact when the hook moves toward it, forming an electrical conduction path; The limiting part is configured to constrain the position of the hook member, so that the first conductive member and the second conductive member maintain stable contact, thereby maintaining the energized operation of the motor; The third guide ramp is configured to separate the first conductive member from the second conductive member when the hook moves toward the exit of the slide, thereby cutting off the electrical conduction path and stopping the motor.

5. An inflation device according to claim 2, characterized in that: The resettable pressing mechanism includes a reset elastic element, one end of which is connected to the first component, and the other end of which is connected to the second component. When the external pressing action is removed, the reset elastic element drives the first component and the second component back to their initial positions.

6. An inflation device according to claim 2, characterized in that: The lever transmission assembly includes: A lever having a fulcrum; The first link has one end connected to the second component and the other end connected to the first end of the lever fulcrum. The second link has one end pivotally connected to the quick-connect nozzle and the other end connected to the second end of the lever fulcrum. When the first component and the second component move axially relative to each other under external pressing, the lever fulcrum is driven to rotate around its fulcrum by the first connecting rod. The lever fulcrum drives the valve in the gas delivery component to squeeze the quick-connect nozzle via the second connecting rod.

7. An inflation device according to claim 6, characterized in that: The quick-connect fitting has a through hole, and the inner wall of the through hole has an internal thread.

8. An inflation device according to claim 6, characterized in that: The quick-connect fitting is made of a flexible material.

9. An inflation device according to claim 2, characterized in that: The air pump assembly also includes an air handling unit; The air handling component includes a cylinder in which a piston is disposed; The piston is connected to a transmission rod; The output shaft of the motor is equipped with a drive gear at its end; The driving gear is meshed with a driven gear; The driven gear is connected to the transmission rod via an eccentric shaft.

10. An inflation device according to any one of claims 2-9, characterized in that: The housing has opposing top and bottom walls, with the first component fixedly mounted on the top wall and the second component exposed on the bottom wall.

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