Inflation device

Abstract

The utility model discloses an inflating device which comprises a driving motor, a piston, a piston cylinder, a power transmission assembly, an inflating nozzle and a flow control assembly, the piston is contained in a containing cavity of the piston cylinder, and the power transmission assembly is connected with a rotor of the driving motor and the piston to drive the piston to reciprocate in the containing cavity of the piston cylinder. The charging connector is installed on the piston cylinder, the position of a connector body channel of the charging connector corresponds to the position of a top opening of the piston cylinder, the flow control assembly is arranged between the piston cylinder and the charging connector, and when the top opening of the piston cylinder is opened by the flow control assembly, the charging connector is connected with the charging connector. When the flow control assembly closes the top opening of the piston cylinder, the top opening of the piston cylinder is allowed to be communicated with the nozzle body channel of the inflation nozzle, and when the flow control assembly closes the top opening of the piston cylinder, the top opening of the piston cylinder is prevented from being communicated with the nozzle body channel of the inflation nozzle.

Description

Technical Field

[0001] The utility model relates to equipment for inflating tires, spheres and the like, in particular to an inflating device. Background Art

[0002] In daily life, air pumps have a wide range of uses. For example, air pumps can be used to inflate objects such as tires and balls. In the Chinese utility model patent with the authorization announcement number CN220726508U, an air pump is disclosed, which includes a housing with a built-in driver, an inflatable component connected to the driver, an output shaft at one end of the driver connected to the inflatable output end of the inflatable component through a transmission assembly, and the driver realizes inflation by driving the piston of the inflatable component to reciprocate in the cylinder body. When the piston moves in the cylinder body in a direction away from the eccentric gear, the space in the cylinder body is reduced to form a high-pressure environment. The high-pressure environment causes air to be filled into the object to be inflated through the air outlet. When the piston moves in the cylinder body in a direction close to the eccentric gear, the space in the cylinder body is expanded to form a negative pressure environment. The negative pressure environment causes air to be sucked into the cylinder body through the air inlet. However, in the utility model patent, since the space in the cylinder body and the object to be inflated are always connected, when the space in the cylinder body forms a negative pressure environment, the gas in the object to be inflated will be sucked into the space in the cylinder body, resulting in a low inflation efficiency of the existing air pump. Utility Model Content

[0003] One purpose of the utility model is to provide an inflation device, wherein when the piston of the inflation device moves in the accommodating chamber of the piston cylinder to form a negative pressure environment in the piston cylinder, the flow control component of the inflation device can close the top opening of the piston cylinder to prevent the gas in the object to be inflated from being sucked into the piston cylinder, thereby improving the inflation efficiency of the inflation device.

[0004] One purpose of the utility model is to provide an inflation device, wherein the opposite ends of the compression spring of the flow control component respectively abut against the valve body and the inflation nozzle, and when a high-pressure environment is formed in the receiving chamber of the piston cylinder, the compressed air pushes the valve body to move toward the inflation nozzle and automatically opens the top opening of the piston cylinder, and the compression spring is compressed to accumulate elastic potential energy, and when a negative pressure environment is formed in the receiving chamber of the piston cylinder, the compression spring automatically pushes the valve body to reset in the process of restoring the initial state, so that the flow control component automatically closes the top opening of the piston cylinder.

[0005] One object of the utility model is to provide an inflation device, wherein the compression spring makes the valve body and the piston cylinder fit face to face to ensure that the valve body reliably closes the top opening of the piston cylinder to avoid air leakage.

[0006] According to one aspect of the present invention, the present invention provides an inflatable device, comprising:

[0007] Drive motor;

[0008] piston;

[0009] A piston cylinder, wherein the piston cylinder has a receiving cavity and a bottom opening and a top opening respectively connected to the receiving cavity, wherein the piston is received in the receiving cavity of the piston cylinder;

[0010] A power transmission component, wherein the power transmission component connects the rotor of the drive motor and the piston, and when the rotor of the drive motor rotates, the piston is driven to reciprocate in the receiving chamber of the piston cylinder through the power transmission component;

[0011] An inflation nozzle, wherein the inflation nozzle has a nozzle body passage, the inflation nozzle is mounted on the piston cylinder, and the position of the nozzle body passage of the inflation nozzle corresponds to the position of the top opening of the piston cylinder; and

[0012] A flow control component, wherein the flow control component is arranged between the piston cylinder and the inflation nozzle, wherein the flow control component is constructed to be able to open or close the top opening of the piston cylinder, when the flow control component opens the top opening of the piston cylinder, the top opening of the piston cylinder and the nozzle body channel of the inflation nozzle are allowed to communicate, when the flow control component closes the top opening of the piston cylinder, the top opening of the piston cylinder and the nozzle body channel of the inflation nozzle are prevented from communicating.

[0013] According to one embodiment of the utility model, the flow control component includes a valve body and a compression spring, wherein the opposite ends of the compression spring respectively abut against the valve body and the inflation nozzle, wherein the compression spring is used to push the valve body toward the piston cylinder so that the top opening of the piston cylinder is closed by the valve body to prevent the top opening of the piston cylinder and the nozzle body channel of the inflation nozzle from being connected.

[0014] According to an embodiment of the present utility model, when the compression spring pushes the valve body toward the piston cylinder, the valve body closes the top opening of the piston cylinder in a manner that the valve body and the piston cylinder are in surface contact with each other.

[0015] According to an embodiment of the utility model, the piston cylinder has an inner concave conical surface, and the valve body has an outer convex conical surface, and the shape and size of the inner concave conical surface of the piston cylinder match the shape and size of the outer convex conical surface of the valve body.

[0016] According to an embodiment of the utility model, the valve body has a positioning column, one end of the compression spring is sleeved on the positioning column of the valve body, and the other end of the compression spring extends to the nozzle body channel of the inflation nozzle.

[0017] According to an embodiment of the utility model, the inflation device comprises a sealing ring, and the sealing ring is clamped between the piston cylinder and the inflation nozzle.

[0018] According to an embodiment of the utility model, the inflation nozzle has an air outlet hole, and the air outlet hole is connected to the nozzle body channel at the side of the nozzle body channel.

[0019] According to one embodiment of the utility model, the power transmission component includes a driving wheel and an extension arm, the driving wheel is drivably connected to the rotor of the driving motor, and the rotor of the driving motor drives the driving wheel to rotate around its own central axis when rotating, one end of the extension arm is fixedly connected to the piston, and the other end is rotatably mounted on the edge of the driving wheel.

[0020] According to an embodiment of the utility model, the inflation device includes a bracket, one end of the bracket is installed on the drive motor, and the other end of the bracket is installed on the piston cylinder.

[0021] According to one embodiment of the utility model, the bracket has a bracket cavity and a rotor channel and an arm body channel respectively connected to the bracket cavity, the driving wheel is rotatably mounted on the bracket and located in the bracket cavity of the bracket, the rotor of the driving motor extends to the bracket cavity of the bracket through the rotor channel of the bracket, and one end of the extension arm extends to the bracket cavity of the bracket through the arm body channel of the bracket. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional schematic diagram from one viewing angle of an inflatable device according to a preferred embodiment of the utility model.

[0023] Figure 2 It is a three-dimensional schematic diagram of the inflation device according to the above preferred embodiment of the utility model from another viewing angle.

[0024] Figure 3 It is a schematic diagram of an exploded view of the inflation device according to the above preferred embodiment of the utility model from one perspective.

[0025] Figure 4 It is a schematic diagram of an exploded view of the inflation device according to the above preferred embodiment of the utility model from another perspective.

[0026] Figure 5It is a cross-sectional schematic diagram of the inflation device according to the above preferred embodiment of the utility model.

[0027] Figure 6 It is a schematic diagram of a local portion of the inflation device according to the above preferred embodiment of the utility model from a viewing angle.

[0028] Figure 7 It is a schematic diagram of another viewing angle of the above-mentioned local part of the inflation device according to the above-mentioned preferred embodiment of the utility model.

[0029] Figure 8 It is a cross-sectional schematic diagram of a state of the inflation device according to the above preferred embodiment of the utility model.

[0030] Fig. 9 It is a cross-sectional schematic diagram of another state of the inflation device according to the above preferred embodiment of the utility model. DETAILED DESCRIPTION

[0031] Before describing in detail any embodiment of the utility model, it should be understood that the utility model is not limited to the construction and arrangement details of the components described below or illustrated in the following figures in its application. The utility model can have other embodiments and can be practiced or carried out in various ways. In addition, it should be understood that the words and terms used here are for the purpose of description and should not be considered as restrictive. The use of "including", "including" or "having" and its variations herein is intended to cover the items and their equivalents and additional items displayed below. Unless otherwise specified or limited, the terms "install", "connect", "support" and "couple" and their variations are widely used and cover direct installation and indirect installation, connection, support and connection. In addition, "connect" and "couple" are not limited to physical or mechanical connections or connections.

[0032] Furthermore, on the first aspect, in the disclosure of the present invention, the terms "longitudinal", "transverse", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore the above terms cannot be understood as limitations on the present invention; on the second aspect, the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" cannot be understood as a limitation on the quantity.

[0033] It should be understood by those skilled in the art that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been demonstrated and explained in the embodiments, and the embodiments of the present invention may be deformed or modified in any way without departing from the principles.

[0034] Refer to the attached drawings of the specification of this utility model Figures 1 to 9 An inflation device according to a preferred embodiment of the utility model will be disclosed and explained in the following description, wherein the inflation device is used to inflate tires, spheres, and other inflatable objects, and the inflation device includes a drive motor 10, a piston 20, a piston cylinder 30, a power transmission component 40, and an inflation nozzle 50.

[0035] Specifically, the drive motor 10 has a rotor 11. When power is supplied to the drive motor 10, the rotor 11 of the drive motor 10 can rotate to output power. Preferably, the drive motor 10 is a DC motor. When DC power is supplied to the drive motor 10, the rotor 11 of the drive motor 10 can rotate to output power.

[0036] The piston cylinder 30 has a receiving chamber 31, a bottom opening 32 and a top opening 33. The bottom opening 32 is connected to the receiving chamber 31 at the bottom of the piston cylinder 30, and the top opening 33 is connected to the receiving chamber 31 at the top of the piston cylinder 30. The piston 20 is reciprocatingly received in the receiving chamber 31 of the piston cylinder 30, so that the receiving chamber 31 of the piston cylinder 30 forms a high-pressure environment and a negative-pressure environment. One end of the power transmission component 40 is connected to the rotor 11 of the drive motor 10, and the other end of the power transmission component 40 extends to the receiving chamber 31 through the bottom opening 32 of the piston cylinder 30 and is connected to the piston 20. The inflation nozzle 50 has a nozzle body channel 51, and the inflation nozzle 50 is installed on the top of the piston cylinder 30, and the position of the nozzle body channel 51 of the inflation nozzle 50 corresponds to the position of the top opening 33 of the piston cylinder 30, so that the nozzle body channel 51 of the inflation nozzle 50 and the top opening 33 of the piston cylinder 30 can be connected.

[0037] In this specific example of the inflation device of the present invention, the inflation nozzle 50 can be screwed to the piston cylinder 30. Figures 1 to 4A support column 34 can be respectively provided on the opposite sides of the top of the piston cylinder 30, and an ear 52 can be respectively provided on the opposite sides of the bottom of the inflation nozzle 50. Each of the ears 52 of the inflation nozzle 50 rests on each of the support columns 34 of the piston cylinder 30, and one end of the screw extends to the threaded hole of the support column 34 after passing through the screw hole of the ear 52, and the screw is screwed to the support column 34. In this way, the inflation nozzle 50 is locked to the piston cylinder 30 by the screw.

[0038] The piston 20 includes a piston disc 21 and a sealing ring 22 mounted on the piston disc 21. The outer diameter of the piston disc 21 is slightly smaller than the inner diameter of the receiving chamber 31 of the piston cylinder 30, and the peripheral wall of the piston disc 21 presses the sealing ring 22 toward the inner wall of the piston cylinder 30 used to form the receiving chamber 31, so as to increase the sealing between the piston 20 and the piston cylinder 30 while ensuring that the piston 20 can reciprocate in the receiving chamber 31 of the piston cylinder 30, so that the receiving chamber 31 of the piston cylinder 30 can form a high-pressure environment and a negative-pressure environment. Preferably, the peripheral wall of the piston disc 21 has an embedding groove 211, and the depth dimension of the embedding groove 211 is smaller than the diameter dimension of the sealing ring 22. In this way, the sealing ring 22 is mounted on the piston disc 21 in a manner that the inner side is embedded in the embedding groove 211, so that the piston disc 21 can press the sealing ring 22 toward the inner wall of the piston cylinder 30 for forming the accommodating cavity 31.

[0039] Preferably, the piston cylinder 30 is made of metal material, for example, aluminum can be used to make the piston cylinder 30. In this way, the piston cylinder 30 has good heat dissipation capability, preventing the piston 20 from reciprocating in the accommodating cavity 31 of the piston cylinder 30 in a high temperature environment, thereby effectively slowing down the aging of the sealing ring 22 and extending the service life of the inflation device.

[0040] Preferably, the inflation nozzle 50 includes a rubber nozzle body 53 and a metal ring body 54 embedded in the top of the nozzle body 53, a portion of the nozzle body channel 51 is formed on the nozzle body 53, and another portion is formed on the ring body 54, wherein the ring body 54 is used to match the inflatable object to increase the wear resistance of the inflation nozzle 50.

[0041] When the inflation device of the utility model is used to inflate an inflatable object, the inflation port of the inflatable object can be sealedly connected to the nozzle body passage 51 of the inflation nozzle 50. For example, when the inflatable object is a sphere, one end of the ball needle can be inserted into the inflation port of the inflatable object, and the other end can be inserted into the ring body 54 of the inflation nozzle 50, so that the inflation port of the inflatable object is sealedly connected to the nozzle body passage 51 of the inflation nozzle 50. When the rotor 11 of the drive motor 10 rotates to output power, the power transmission component 40 transmits the power to the piston 20 to drive the piston 20 to reciprocate in the piston cylinder 30 and fill the gas into the inflatable object through the inflation nozzle 50. It can be understood that in order to enable the accommodating chamber 31 of the piston cylinder 30 to inhale external gas, an air inlet (not shown in the figure) is provided on the side wall of the piston cylinder 30, and the air inlet is located between the piston 20 and the top opening 33 of the piston cylinder 30. The air inlet is connected to the accommodating chamber 31 and is equipped with an air inlet check valve. When the piston 20 is pulled by the power transmission component 40 to move toward the direction close to the drive motor 10, a negative pressure environment is formed in the piston cylinder 30, and the air inlet check valve installed on the air inlet is opened to allow external gas to enter the piston cylinder 30 through the air inlet. Accordingly, when the piston 20 is pushed by the power transmission component 40 to move toward the direction close to the inflation nozzle 50, the air inlet check valve closes the air inlet, and a high-pressure environment is formed in the piston cylinder 30 to fill the compressed air into the object to be inflated through the mouth body channel 51 of the inflation nozzle 50.

[0042] When a negative pressure environment is formed in the piston cylinder 30, in order to avoid the gas in the object to be inflated being extracted, the inflation device of the utility model further includes a flow control component 60, which is arranged between the piston cylinder 30 and the inflation nozzle 50, and the flow control component 60 is configured to open or close the top opening 33 of the piston cylinder 30. When the piston 20 is pulled by the power transmission component 40 to move toward the direction close to the drive motor 10 so that a negative pressure environment is formed in the piston cylinder 30, the flow control component 60 automatically closes the top opening 33 of the piston cylinder 30. At this time, the flow control component 60 prevents the nozzle channel 51 of the inflation nozzle 50 from communicating with the top opening 33 of the piston cylinder 30 to avoid the gas in the object to be inflated being extracted. At the same time, the air inlet check valve installed on the air inlet is opened to allow external gas to enter the receiving chamber of the piston cylinder 30. Correspondingly, when the piston 20 is pushed by the power transmission component 40 to move toward the direction close to the inflation nozzle 50 so that a high-pressure environment is formed in the piston cylinder 30, the flow control component 60 automatically opens the top opening 33 of the piston cylinder 30. At this time, the flow control component 60 allows the mouth body channel 51 of the inflation nozzle 50 and the top opening 33 of the piston cylinder 30 to be connected. At the same time, the air intake one-way valve installed on the air inlet is closed to prevent the gas in the accommodating chamber 31 of the piston cylinder 30 from being discharged through the air inlet, that is, the compressed gas can only enter the mouth body channel 51 of the inflation nozzle 50 through the top opening 33 of the piston cylinder 30 to fill the gas into the object to be inflated.

[0043] Specifically, the flow control component 60 includes a valve body 61 and a compression spring 62, wherein the opposite ends of the compression spring 62 respectively abut against the valve body 61 and the inflation nozzle 50, wherein the compression spring 62 is used to push the valve body 61 toward the piston cylinder 30 so that the valve body 61 closes the top opening 33 of the piston cylinder 30, thereby preventing the top opening 33 of the piston cylinder 30 and the nozzle body channel 51 of the inflation nozzle 50 from being connected. When the piston 20 is pulled by the power transmission component 40 to move toward the direction close to the drive motor 10 and a negative pressure environment is formed in the piston cylinder 30, the compression spring 62 pushes the valve body 61 to move toward the direction close to the piston cylinder 30, and finally causes the valve body 61 to close the top opening 33 of the piston cylinder 30. At this time, the flow control component 60 closes the top opening 33 of the piston cylinder 30. Correspondingly, when the piston 20 is pushed by the power transmission component 40 to move toward the direction close to the inflation nozzle 50 and a high-pressure environment is formed in the piston cylinder 30, the compressed gas pushes the valve body 61 to move toward the direction close to the inflation nozzle 50 and compresses the compression spring 62, causing the compression spring 62 to deform and accumulate elastic potential energy, so that the compression spring 62 can push the valve body 61 to move toward the direction close to the piston cylinder 30 in the subsequent process of restoring the initial state.

[0044] Preferably, when the compression spring 62 pushes the valve body 61 toward the piston cylinder 30, the valve body 61 closes the top opening 33 of the piston cylinder 30 in a manner that the valve body 61 and the piston cylinder 30 are in surface contact with each other, thereby increasing the sealing effect between the valve body 61 and the piston cylinder 30. Figures 1 to 9 In this specific example of the inflation device of the utility model shown, the piston cylinder 30 has an inner concave conical surface 35, and the valve body 61 has an outer convex conical surface 611. The shape and size of the inner concave conical surface 35 of the piston cylinder 30 match the shape and size of the outer convex conical surface 611 of the valve body 61, so that when the compression spring 62 pushes the valve body 61 toward the piston cylinder 30, the valve body 61 and the piston cylinder 30 fit together surface to surface.

[0045] Preferably, refer to the attached Figures 3 to 5 The valve body 61 has a positioning column 612, one end of the compression spring 62 is sleeved on the positioning column 612 of the valve body 61, and the other end of the compression spring 62 extends to the nozzle channel 51 of the inflation nozzle 50 and abuts against a step 55 of the inflation nozzle 50. In this way, the compression spring 62 can be prevented from tilting when the valve body 61 moves, so as to ensure the reliability of the inflation device.

[0046] Reference Figures 3 to 5, the inflation device further includes a sealing ring 70, which is clamped between the piston cylinder 30 and the inflation nozzle 50 to prevent air leakage at the assembly position of the piston cylinder 30 and the inflation nozzle 50. Preferably, the top of the piston cylinder 30 has a convex ring 36, and the inner diameter of the convex ring 36 is consistent with the outer diameter of the bottom of the inflation nozzle 50, so as to allow the bottom of the inflation nozzle 50 to be inserted into the convex ring 36 of the piston cylinder 30, and when the inflation nozzle 50 is screwed to the top of the piston cylinder 30, the inflation nozzle 50 can press the sealing ring 70 toward the top of the piston cylinder 30, so that the sealing ring 70 is slightly deformed to prevent air leakage at the assembly position of the piston cylinder 30 and the inflation nozzle 50.

[0047] Preferably, the bottom of the inflation nozzle 50 has a groove 56, the height dimension of the groove 56 is smaller than the height dimension of the sealing ring 70, and the top of the sealing ring 70 is located in the groove 56 of the inflation nozzle 50. In this way, when the inflation nozzle 50 is assembled on the top of the piston cylinder 30, the sealing ring 70 can be prevented from deviating from the designed position, thereby ensuring that the sealing ring 70 is pressed toward the top of the piston cylinder 30 by the inflation nozzle 50 and the sealing ring 70 prevents air leakage at the assembly position of the piston cylinder 30 and the inflation nozzle 50.

[0048] Reference Figures 1 to 9 The inflation nozzle 50 has an air outlet 57, and the air outlet 57 is connected to the mouth body channel 51 at the side of the mouth body channel 51, and a pressure gauge can be connected to the air outlet 57 of the inflation nozzle 50, so that when the inflation device is used to inflate the inflatable object, the air pressure value of the inflatable object can be read through the pressure gauge. In this specific example of the inflation device of the utility model, the inflation device includes an air pipe 80, one end of the air pipe 80 is installed on the inflation nozzle 50 and connected to the air outlet 57, and the other end of the air pipe 80 is installed on the pressure gauge and connected to the pressure gauge, so that the pressure gauge can be connected to the air outlet 57 of the inflation nozzle 50.

[0049] Reference Figures 3 to 7The power transmission component 40 includes a driving wheel 41 and an extension arm 42. The driving wheel 41 is drivably connected to the rotor 11 of the driving motor 10. One end of the extension arm 42 is fixedly connected to the piston 20, and the other end is rotatably mounted on the edge of the driving wheel 41. In this way, the power transmission component 40 connects the rotor 11 of the driving motor 10 and the piston 20. When the rotor 11 of the driving motor 10 rotates to output power, the rotor 11 of the driving motor 10 drives the driving wheel 41 to rotate around its own central axis. At this time, the driving wheel 41 pulls the piston 20 to move toward the direction close to the driving motor 10 or pushes the piston 20 to move toward the direction close to the inflation nozzle 50 through the extension arm 42, so that the piston 20 can reciprocate in the receiving chamber 31 of the piston cylinder 30.

[0050] It is worth mentioning that the specific connection method between the extension arm 42 and the piston 20 is not limited in the inflation device of the present invention. Figures 1 to 9 In the specific example of the inflation device of the present invention shown, the extension arm 42 and the piston plate 21 of the piston 20 are an integral structure.

[0051] Continue to refer to the attached Figures 1 to 9 The inflation device includes a bracket 90, one end of which is mounted on the drive motor 10, and the other end is mounted on the piston cylinder 30, so that the bracket 90 can integrate the drive motor 10, the piston cylinder 30, the power transmission component 40 and the inflation nozzle 50 into an independent module.

[0052] It is worth mentioning that the manner in which the bracket 90 is mounted on the top of the drive motor 10 is not limited in the inflatable device of the present invention. For example, in this specific example of the inflatable device of the present invention, the bracket 90 can be mounted on the top of the drive motor 10 by screws. Similarly, the bracket 90 and the piston cylinder 30 can also be mounted by screws.

[0053] Further, the bracket 90 has a bracket cavity 91 and a rotor channel 92 and an arm channel 93 respectively connected to the bracket cavity 91. The driving wheel 41 is rotatably mounted on the bracket 90, and the driving wheel 41 is located in the bracket cavity 91 of the bracket 90. For example, in this specific example of the inflatable device of the utility model, the inflatable device includes a bearing 100, the inner side of the bearing 100 is fixedly mounted on the boss 411 of the driving wheel 41, and the outer side of the bearing 100 is fixedly mounted on the bracket 90, so that the driving wheel 41 is rotatably mounted on the bracket 90 and the driving wheel 41 can only rotate around its own central axis when driven. The rotor 11 of the drive motor 10 extends to the bracket cavity 91 of the bracket 90 through the rotor channel 92 of the bracket 90, so that the rotor 11 of the drive motor 10 and the drive wheel 41 can be meshed and connected in the bracket cavity 91 of the bracket 90, and one end of the extension arm 42 extends to the bracket cavity 91 of the bracket 90 through the arm body channel 93 of the bracket 90, so that the extension arm 42 can be connected to the piston disk 21 of the piston 20.

[0054] In order to fix the outer side of the bearing 100 to the bracket 90, in this specific example of the present invention, refer to the attached Figure 5 The bracket 90 has a mounting hole 94, and the mounting hole 94 is connected to the bracket cavity 91. The inner diameter of the mounting hole 94 is consistent with the outer diameter of the bearing 100. The bearing 100 is embedded in the mounting hole 94 of the bracket 90. Based on the friction between the outer side of the bearing 100 and the bracket 90, the outer side of the bearing 100 can be fixedly mounted on the bracket 90.

[0055] The side of the bracket 90 has an assembly opening 95, and the assembly opening 95 is connected to the bracket cavity 91. Through the assembly opening 95, the driving wheel 41 can be rotatably mounted on the bracket 90 and the driving wheel 41 is located in the bracket cavity 91, and one end of the extension arm 42 can be rotatably mounted on the edge of the driving wheel 41. Preferably, the inflatable device includes a cover 110, which is mounted on the side of the bracket 90 and is used to close the assembly opening 95 of the bracket 90.

[0056] It should be understood by those skilled in the art that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been demonstrated and explained in the embodiments, and the embodiments of the present invention may be deformed or modified in any way without departing from the principles.

Claims

1. An inflatable device, characterized in that: include: Drive motor; piston; A piston cylinder, wherein the piston cylinder has a receiving cavity and a bottom opening and a top opening respectively connected to the receiving cavity, wherein the piston is received in the receiving cavity of the piston cylinder; A power transmission component, wherein the power transmission component connects the rotor of the drive motor and the piston, and when the rotor of the drive motor rotates, the piston is driven to reciprocate in the receiving chamber of the piston cylinder through the power transmission component; An inflation nozzle, wherein the inflation nozzle has a nozzle body passage, the inflation nozzle is mounted on the piston cylinder, and the position of the nozzle body passage of the inflation nozzle corresponds to the position of the top opening of the piston cylinder; as well as A flow control component, wherein the flow control component is arranged between the piston cylinder and the inflation nozzle, wherein the flow control component is constructed to be able to open or close the top opening of the piston cylinder, when the flow control component opens the top opening of the piston cylinder, the top opening of the piston cylinder and the nozzle body channel of the inflation nozzle are allowed to communicate, when the flow control component closes the top opening of the piston cylinder, the top opening of the piston cylinder and the nozzle body channel of the inflation nozzle are prevented from communicating.

2. The inflation device according to claim 1, wherein the flow control component comprises a valve body and a compression spring, the opposite ends of the compression spring respectively abut against the valve body and the inflation nozzle, wherein the compression spring is used to push the valve body toward the piston cylinder so that the valve body closes the top opening of the piston cylinder to prevent the top opening of the piston cylinder and the nozzle body channel of the inflation nozzle from being connected.

3. The inflation device according to claim 2, wherein when the compression spring pushes the valve body toward the piston cylinder, the valve body closes the top opening of the piston cylinder in a manner in which the valve body and the piston cylinder are in surface contact with each other.

4. The inflation device according to claim 3, wherein the piston cylinder has an inner concave conical surface, and the valve body has an outer convex conical surface, and the shape and size of the inner concave conical surface of the piston cylinder match the shape and size of the outer convex conical surface of the valve body.

5. The inflation device according to claim 2, wherein the valve body has a positioning column, one end of the compression spring is sleeved on the positioning column of the valve body, and the other end of the compression spring extends to the nozzle body channel of the inflation nozzle.

6. The inflation device according to claim 1, wherein the inflation device comprises a sealing ring, wherein the sealing ring is clamped between the piston cylinder and the inflation nozzle.

7. The inflation device according to claim 1, wherein the inflation nozzle has an air outlet, and the air outlet is connected to the nozzle body channel at the side of the nozzle body channel.

8. An inflatable device according to any one of claims 1 to 7, wherein the power transmission component includes a drive wheel and an extension arm, the drive wheel is drivably connected to the rotor of the drive motor, and the rotor of the drive motor drives the drive wheel to rotate around its own central axis when rotating, one end of the extension arm is fixedly connected to the piston, and the other end is rotatably mounted on the edge of the drive wheel.

9. The inflator according to claim 8, wherein the inflator comprises a bracket, one end of the bracket is mounted to the driving motor, and the other end of the bracket is mounted to the piston cylinder.

10. An inflation device according to claim 9, wherein the bracket has a bracket cavity and a rotor channel and an arm body channel respectively connected to the bracket cavity, the driving wheel is rotatably mounted on the bracket and located in the bracket cavity of the bracket, the rotor of the driving motor extends to the bracket cavity of the bracket through the rotor channel of the bracket, and one end of the extension arm extends to the bracket cavity of the bracket through the arm body channel of the bracket.

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