Brushless direct-drive motor

Abstract

The utility model discloses a brushless straight pump core, including support, be provided with drive assembly on the support, the other end horizontal fixed setting of support has the cylinder sleeve, the cylinder sleeve is by cylinder sleeve main part and the integrated forming of the cylinder sleeve before gas and is composed, be provided with the monitoring installation hole that communicates with its inside on the cylinder sleeve before gas, the monitoring installation hole is embedded and is installed with the barometric pressure sensor component for monitoring barometric pressure, a plurality of different directions's gas outlet interface is distributed on the cylinder sleeve before gas, and the gas outlet interface is connected through knob connecting component and connects the inflation pipe component, through the sensor pressure plate guaranteeing barometric pressure sensor stable and airtight installation on monitoring installation hole, thereby guaranteeing the quick accurate inductive barometric pressure change, improve the inflation accuracy, the design of knob joint and knob connecting sleeve can complete the disassembly and replacement of inflation pipe component fast, and knob joint and knob connecting sleeve can keep the rotation function after installation, can change the inflation direction conveniently.

Description

Technical Field

[0001] This utility model belongs to the field of air pump technology, specifically relating to a brushless direct pump mechanism. Background Technology

[0002] An air pump, also called a tire inflator or tire pump, works by rotating a motor. When pumping air, the piston's check valve is opened by atmospheric pressure, allowing air to enter the cylinder. When inflating, the check valve is closed by the pressure inside the cylinder, allowing air to enter the tire. Air pumps are widely used in automobiles, motorcycles, bicycles, and other vehicles. The pump's core mechanism is the most important working part, including the motor, transmission structure, cylinder liner, piston connecting rod, and inflation components.

[0003] To ensure real-time air pressure measurement, existing mechanisms typically feature a split cylinder liner front cover at the front of the cylinder liner, with a pressure monitoring sensor connected to the front cover via a pipeline. This installation method may lead to excessive connection points and the risk of air leakage, making it impossible to monitor accurate air pressure. Furthermore, traditional cylinder liner front covers only have a single air outlet, lacking multi-directional air outlet functionality. Therefore, this invention designs a brushless direct pump mechanism. Utility Model Content

[0004] The purpose of this invention is to provide a brushless direct pump mechanism to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a brushless direct pump core, including a bracket, a drive assembly on the bracket, and a cylinder liner horizontally fixed at the other end of the bracket. The cylinder liner is integrally formed from a cylinder liner body and a pre-exhaust cylinder liner that are interconnected. A horizontally movable connecting rod piston is designed inside the cylinder liner body, and the connecting rod piston is driven to perform horizontal reciprocating motion by the drive assembly. A monitoring mounting hole communicating with its interior is provided on the pre-exhaust cylinder liner, and a pressure sensor assembly for monitoring air pressure is embedded in the monitoring mounting hole. Multiple exhaust ports in different directions are distributed on the pre-exhaust cylinder liner, and the exhaust ports are connected to an air filling pipe assembly through a knob connection assembly.

[0006] Preferably, the drive assembly includes a brushless motor fixedly mounted at one end of the bracket, a driven gear rotatably mounted on the bracket via bearing B, a drive gear fixedly mounted at the output end of the brushless motor, and a connecting rod shaft eccentrically mounted on the driven gear. The drive gear and the driven gear mesh with each other for transmission. One end of the connecting rod piston is rotatably sleeved on the connecting rod shaft via bearing A. A retaining ring for preventing the connecting rod piston from disengaging is engaged at the top end of the connecting rod shaft.

[0007] Preferably, the pressure sensor assembly includes a pressure sensor embedded inside the monitoring mounting hole, and a sensor pressure plate for pressing the pressure sensor, the sensor pressure plate being connected to the outer edge of the monitoring mounting hole by screws.

[0008] Preferably, the inflation tube assembly includes an air tube elbow, a connecting hose connected to one end of the air tube elbow, and an inflation nozzle connected to the other end of the connecting hose. Locking rings for preventing air leakage are fixedly fitted at the connection points between the inflation nozzle and the connecting hose, and at the connection points between the air tube elbow and the connecting hose.

[0009] Preferably, the knob connection assembly includes a knob connector that is threadedly connected to any one of the air outlet ports, a knob connection sleeve that is rotatably engaged with the knob connector and is in a sealed connection, and the other end of the knob connection sleeve is connected to the air pipe elbow.

[0010] Preferably, a check valve is provided at the position where the cylinder liner body communicates with the cylinder liner before the exhaust. The check valve is located inside the cylinder liner before the exhaust. A spring is provided between the check valve and the cylinder liner before the exhaust. The check valve is sealed at the position where the cylinder liner body and the cylinder liner before the exhaust are connected by the spring.

[0011] Preferably, the cylinder liner body is provided with an air inlet with a one-way valve, and a fan blade is installed on the output end of the other end of the brushless motor.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This utility model designs a cylinder liner structure that is integrally formed from the cylinder liner body and the front cylinder liner of the exhaust. A monitoring and mounting hole for installing a pressure sensor is directly opened on the front cylinder liner of the exhaust. The pressure sensor is installed stably and in a sealed manner in the monitoring and mounting hole with the help of a sensor pressure plate, thereby ensuring rapid and accurate sensing of pressure changes and improving the inflation accuracy.

[0014] The design of the knob connector and knob connecting sleeve allows for quick disassembly and assembly of the air hose elbow, enabling rapid disassembly and replacement of the inflation hose assembly. Furthermore, the knob connector and knob connecting sleeve retain their rotation function after installation, facilitating easy changes in the inflation direction.

[0015] The cylinder liner is designed with multiple outlet ports in different directions, which can be used with multiple knob connectors and knob connecting sleeves to connect multiple inflation tube assemblies at the same time, enabling simultaneous multi-directional inflation. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0018] Figure 3 This is a schematic diagram of the exploded structure of this utility model;

[0019] In the diagram: 1. Bracket; 2. Brushless motor; 3. Cylinder liner body; 4. Fan blade; 5. Driven gear; 6. Connecting rod piston; 7. Outlet cylinder liner; 8. Monitoring mounting hole; 9. Sensor pressure plate; 10. Air pressure sensor; 11. Air pipe elbow; 12. Connecting rod shaft; 13. Locking ring; 14. Connecting hose; 15. Inflation nozzle; 16. Drive gear; 17. Bearing A; 18. Bearing B; 19. Check valve; 20. Snap ring; 21. Knob connector; 22. Knob connecting sleeve; 23. Spring. 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. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figures 1 to 3This utility model provides a technical solution: a brushless direct pump core, including a bracket 1, a drive assembly on the bracket 1, and a cylinder liner horizontally fixed at the other end of the bracket 1. The cylinder liner is integrally formed by a cylinder liner body 3 and an outlet cylinder liner 7, which can ensure the airtightness of the overall structure and avoid the gaps caused by loose connections in traditional split structures, thus preventing air leakage. The cylinder liner body 3 is designed with a horizontally movable connecting rod piston 6, which is driven by the drive assembly to perform horizontal reciprocating motion, thereby achieving the function of cyclic inflation. The outlet cylinder liner 7 is provided with a monitoring mounting hole 8 that communicates with its interior. A pressure sensor assembly for monitoring air pressure is embedded in the monitoring mounting hole 8, which can quickly and accurately measure the real-time air pressure, thereby ensuring more accurate inflation. The outlet cylinder liner 7 has multiple outlet ports in different directions, and the outlet ports are connected to the inflation tube assembly through a knob connection assembly. In this embodiment, preferably, the drive assembly includes a brushless motor 2 fixedly mounted at one end of the bracket 1, a driven gear 5 rotatably mounted on the bracket 1 via bearing B18, a drive gear 16 fixedly mounted at the output end of the brushless motor 2, and a connecting rod shaft 12 eccentrically mounted on the driven gear 5. The drive gear 16 and the driven gear 5 mesh and transmit power to each other. One end of the connecting rod piston 6 is rotatably sleeved on the connecting rod shaft 12 via bearing A17. A retaining spring 20 for preventing the connecting rod piston 6 from disengaging is engaged at the top end of the connecting rod shaft 12. In this embodiment, preferably, the air pressure sensor assembly includes an air pressure sensor 10 embedded inside the monitoring mounting hole 8, and a sensor pressure plate 9 for pressing the air pressure sensor 10. The sensor pressure plate 9 is connected to the outer edge of the monitoring mounting hole 8 by screws. In this embodiment, preferably, the inflation tube assembly includes an air tube elbow 11, a connecting hose 14 communicating with one end of the air tube elbow 11, and an inflation nozzle 15 communicating with the other end of the connecting hose 14. Locking rings 13 are fixedly fitted at the connection points of the inflation nozzle 15 and the connecting hose 14, as well as at the connection points of the air tube elbow 11 and the connecting hose 14, to prevent air leakage, ensuring a tight connection and preventing air leakage. In this embodiment, preferably, the knob connection assembly includes a knob connector 21 that is threadedly connected to any one of the air outlet ports, and a knob connecting sleeve 22 that is rotatably engaged and sealed on the knob connector 21. The other end of the knob connecting sleeve 22 communicates with the air tube elbow 11. Multiple air outlet ports can simultaneously connect to multiple inflation tube assemblies using multiple knob connectors 21 and knob connecting sleeves 22, enabling simultaneous multi-directional inflation. In this embodiment, preferably, a check valve 19 is provided at the position where the cylinder liner body 3 communicates with the pre-exhaust cylinder liner 7. The check valve 19 is located inside the pre-exhaust cylinder liner 7, and a spring 23 is provided between the check valve 19 and the pre-exhaust cylinder liner 7. The check valve 19 is sealed and plugged at the communication position between the cylinder liner body 3 and the pre-exhaust cylinder liner 7 by the spring 23.In this embodiment, preferably, the cylinder liner body 3 is provided with an air inlet with a one-way valve for automatic air intake when negative pressure occurs in the cylinder liner body 3, and a fan blade 4 is installed on the output end of the other end of the brushless motor 2 for heat dissipation of the brushless motor 2.

[0022] Although embodiments of the present invention have been shown and described in detail above, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A brushless direct pump motor, comprising a bracket (1), wherein a drive assembly is disposed on the bracket (1), characterized in that: The other end of the bracket (1) is horizontally fixed with a cylinder liner. The cylinder liner is integrally formed by the interconnected cylinder liner body (3) and the pre-exhaust cylinder liner (7). The cylinder liner body (3) is designed with a horizontally movable connecting rod piston (6). The connecting rod piston (6) is driven by the drive assembly to perform horizontal reciprocating motion. The pre-exhaust cylinder liner (7) is provided with a monitoring mounting hole (8) that communicates with its interior. A pressure sensor assembly for monitoring air pressure is embedded in the monitoring mounting hole (8). The pre-exhaust cylinder liner (7) has multiple exhaust ports in different directions. The exhaust ports are connected to the inflation tube assembly through a knob connection assembly.

2. The brushless direct pump mechanism according to claim 1, characterized in that: The drive assembly includes a brushless motor (2) fixedly mounted on one end of a bracket (1), a driven gear (5) rotatably mounted on the bracket (1) via a bearing B (18), a drive gear (16) fixedly mounted on the output end of the brushless motor (2), and a connecting rod shaft (12) eccentrically mounted on the driven gear (5). The drive gear (16) and the driven gear (5) mesh with each other for transmission. One end of the connecting rod piston (6) is rotatably sleeved on the connecting rod shaft (12) via a bearing A (17). A retaining ring (20) for preventing the connecting rod piston (6) from disengaging is engaged at the top end of the connecting rod shaft (12).

3. The brushless direct pump mechanism according to claim 1, characterized in that: The pressure sensor assembly includes a pressure sensor (10) embedded inside the monitoring mounting hole (8) and a sensor pressure plate (9) for pressing the pressure sensor (10), the sensor pressure plate (9) being connected to the outer edge of the monitoring mounting hole (8) by screws.

4. The brushless direct pump mechanism according to claim 1, characterized in that: The inflation tube assembly includes an air tube elbow (11), a connecting hose (14) connected to one end of the air tube elbow (11), and an inflation nozzle (15) connected to the other end of the connecting hose (14). Locking rings (13) for preventing air leakage are fixedly fitted at the connection points of the inflation nozzle (15) and the connecting hose (14) and the connection points of the air tube elbow (11) and the connecting hose (14).

5. A brushless direct pump mechanism according to claim 4, characterized in that: The knob connection assembly includes a knob connector (21) that is screwed onto any one of the air outlets, and a knob connecting sleeve (22) that is rotated and snapped onto the knob connector (21) and is in a sealed connection. The other end of the knob connecting sleeve (22) is connected to the air pipe elbow (11).

6. The brushless direct pump mechanism according to claim 1, characterized in that: A check valve (19) is provided at the position where the cylinder liner body (3) communicates with the pre-exhaust cylinder liner (7). The check valve (19) is located inside the pre-exhaust cylinder liner (7). A spring (23) is provided between the check valve (19) and the pre-exhaust cylinder liner (7). The check valve (19) is sealed and plugged at the communication position between the cylinder liner body (3) and the pre-exhaust cylinder liner (7) by the spring (23).

7. A brushless direct pump motor according to claim 2, characterized in that: The cylinder liner body (3) is provided with an air inlet with a one-way valve, and a fan blade (4) is installed on the output end of the other end of the brushless motor (2).

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