Inflation mechanism of inflator pump

Abstract

The utility model provides an inflation mechanism of an inflator pump, a brushless motor, a cylinder block and a piston rod, a cam is fixed on an output shaft of the brushless motor, the piston rod is eccentrically connected to the cam, a piston cavity is arranged in the cylinder block, a piston head of the piston rod is arranged in the piston cavity in a sealed mode, and the piston rod is arranged in the piston cavity. One end of the piston cavity is communicated with an air outlet hole; the brushless motor is used for driving the cam to rotate, the cam enables the piston rod to do telescopic motion in the piston cavity, and generated gas is exhausted from the gas outlet hole. According to the inflation mechanism of the inflator pump, the piston rod is eccentrically connected to the cam, direct transmission between the motor and the piston rod can be achieved, connecting rod transmission does not need to be added, the transmission structure is more stable and not prone to damage, and therefore the overall inflation efficiency of the inflator pump is improved, and the service life is prolonged.

Description

Technical Field

[0001] This application relates to the field of air pump technology, specifically to an air pump inflation mechanism. Background Technology

[0002] An air pump is an inflation tool that operates by a motor. It is widely used for inflating tires of cars, motorcycles, and bicycles, as well as items such as balls and rubber boats. The structure of an air pump generally includes a motor, transmission assembly, piston rod, one-way valve, and cylinder. Its principle is that the motor drives the transmission assembly, causing the piston rod to reciprocate within the cylinder, thus achieving the inflation function. Current air pumps typically use a connecting rod to drive the motor and piston rod. This structure has poor stability, and after long-term use, the components are prone to fatigue failure, resulting in a short service life. Summary of the Invention

[0003] (a) Technical problems to be solved

[0004] The problem to be solved by this utility model is to provide an inflation mechanism for an air pump, so as to overcome the defects of the short service life caused by the unstable transmission structure of the air pump in the prior art.

[0005] (II) Technical Solution

[0006] The embodiments in this specification provide the following technical solutions:

[0007] This specification provides an inflation mechanism for an air pump, including a brushless motor, a cylinder base, and a piston rod. A cam is fixed on the output shaft of the brushless motor, and the piston rod is eccentrically connected to the cam. The cylinder base has a piston chamber inside, and the piston head of the piston rod is sealed inside the piston chamber. One end of the piston chamber is connected to an air outlet. The brushless motor drives the cam to rotate, and the cam causes the piston rod to extend and retract within the piston chamber, discharging the generated gas through the air outlet.

[0008] In some embodiments, the cam is semi-circular with a connecting portion extending from one side. The piston rod is mounted on the connecting portion, and a connecting shaft is fixed to the connecting portion. The end of the piston rod is fixed to the connecting shaft, and the connecting shaft causes the end of the piston rod to be eccentrically positioned relative to the cam. Therefore, when the cam rotates, it drives the piston rod to swing back and forth, thereby causing it to extend and retract within the piston chamber to generate gas.

[0009] In some embodiments, one end of the cylinder seat is connected to a cylinder head bracket, the air outlet is disposed on one side of the cylinder head bracket, the cylinder head bracket is provided with a flow cavity, the flow cavity connects the air outlet and the piston chamber, one side of the flow cavity is provided with a through hole, and a one-way valve is installed between the through hole and the flow cavity.

[0010] In some embodiments, a sealing ring is fitted on the piston head, the sealing ring is in contact with the inner wall of the piston chamber, and a plurality of positioning pins are provided on the cylinder head bracket, the positioning pins being fixed on the cylinder seat.

[0011] In some embodiments, a mounting base is provided on one side of the cylinder seat, and the brushless motor is fixed on the mounting base.

[0012] (III) Beneficial Effects

[0013] Compared with the prior art, the beneficial effects that can be achieved by the above-mentioned at least one technical solution adopted in the embodiments of this specification include at least the following: the direct transmission between the motor and the piston rod can be realized by eccentrically connecting the piston rod on the cam, without the need to add connecting rod transmission, making the transmission structure more stable and less prone to damage, thereby improving the overall inflation efficiency of the air pump and extending its service life. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a perspective view in this application;

[0016] Figure 2 This is a sectional view in this application;

[0017] Figure 3 This is a perspective view of the cam and piston rod in this application;

[0018] Figure 4 This is a perspective view of the brushless motor and cam in this application;

[0019] Figure 5 This is a perspective view of the cylinder block and cylinder bracket in this application.

[0020] The component names corresponding to the various labels in the figure are: 1. Brushless motor; 2. Cylinder seat; 3. Piston rod; 4. Cam; 5. Connecting part; 6. Piston chamber; 7. Piston head; 8. Air outlet; 9. Connecting shaft; 10. Cylinder bracket; 11. Flow chamber; 12. Through hole; 13. One-way valve; 14. Sealing ring; 15. Positioning pin; 16. Mounting base. Detailed Implementation

[0021] The embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0022] The following specific examples illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. This application can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this application. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0023] It should be noted that various aspects of embodiments within the scope of the appended claims are described below. It will be apparent that the aspects described herein can be embodied in a wide variety of forms, and any particular structure and / or function described herein is merely illustrative. Based on this application, those skilled in the art will understand that one aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspects set forth herein can be used to implement the device and / or practice the method. Additionally, this device and / or method can be implemented using structures and / or functionalities other than one or more of the aspects set forth herein.

[0024] It should also be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this application. The illustrations only show the components related to this application and are not drawn according to the number, shape and size of the components in actual implementation. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0025] Additionally, specific details are provided in the following description to facilitate a thorough understanding of the examples. However, those skilled in the art will understand that practice can be carried out without these specific details.

[0026] Combination Figures 1-5As shown, this application provides an inflation mechanism for an air pump, including a brushless motor 1, a cylinder seat 2, and a piston rod 3. A cam 4 is fixed on the output shaft of the brushless motor 1, and the piston rod 3 is eccentrically connected to the cam 4. When the brushless motor 1 drives the cam 4 to rotate through the output shaft, it can drive the end of the piston rod 3 to rotate along the outer edge of the cam 4. Therefore, the front end of the piston rod 3 will exhibit a swinging phenomenon. The cylinder seat 2 has a piston chamber 6 inside, and the piston head 7 of the piston rod 3 is sealed and placed in the piston chamber 6, thus forming a cylinder. One end of the piston chamber 6 is connected to an air outlet 8. The cam 4 causes the piston rod 3 to extend and retract within the piston chamber 6, and the generated gas is discharged from the air outlet 8. Specifically, the cam 4 is semi-circular, and a connecting part 5 extends from one side to form a connecting part 5. The piston rod 3 is mounted on the connecting part 5, and a connecting shaft 9 is fixed on the connecting part 5. The end of the piston rod 3 is fixed on the connecting shaft 9. Therefore, when the cam 4 rotates, it can pull the piston rod 3 to extend and retract as a whole through the connecting shaft 9.

[0027] In some embodiments, such as Figure 1 and Figure 2 As shown, one end of the cylinder seat 2 is connected to the cylinder head bracket 10. The exhaust port 8 is located on one side of the cylinder head bracket 10. The cylinder head bracket 10 has a flow chamber 11, which connects the exhaust port 8 and the piston chamber 6. The gas generated in the piston chamber 6 is discharged through the flow chamber 11 to the exhaust port 8. A through hole 12 is provided on one side of the flow chamber 11. A one-way valve 13 is installed between the through hole 12 and the flow chamber 11. The through hole 12 serves to allow air to pass through. When the piston head 7 moves inward, the one-way valve... 13 is sealed, and gas is discharged from the vent 8. When the piston head 7 moves outward, the one-way valve 13 opens, and external air can enter the flow chamber 11 and the piston chamber 6 through the through hole 12. In this embodiment, a sealing ring 14 is fitted on the piston head 7, and the sealing ring 14 fits against the inner wall of the piston chamber 6. The cylinder head bracket 10 is provided with multiple positioning pins 15, which are fixed on the cylinder seat 2. A mounting seat 16 is provided on one side of the cylinder seat 2, and the brushless motor 1 is fixed on the mounting seat 16.

[0028] This utility model discloses an inflation mechanism for an air pump. By eccentrically connecting the piston rod on the cam, the motor and piston rod can be directly driven, eliminating the need for additional connecting rod transmission. This makes the transmission structure more stable and less prone to damage, thereby improving the overall inflation efficiency of the air pump and extending its service life.

[0029] In this specification, the same or similar parts between the various embodiments can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments. In particular, the descriptions of the embodiments described later are relatively simple, and relevant parts can be referred to the descriptions of the foregoing embodiments.

[0030] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should 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 mechanism for an air pump, comprising a brushless motor (1), a cylinder seat (2), and a piston rod (3), characterized in that, A cam (4) is fixed on the output shaft of the brushless motor (1). The piston rod (3) is eccentrically connected to the cam (4). A piston chamber (6) is provided inside the cylinder seat (2). The piston head (7) of the piston rod (3) is sealed in the piston chamber (6). One end of the piston chamber (6) is connected to an air outlet (8). The brushless motor (1) is used to drive the cam (4) to rotate. The cam (4) causes the piston rod (3) to extend and retract in the piston chamber (6) and discharge the generated gas from the air outlet (8).

2. The inflation mechanism of the air pump according to claim 1, characterized in that, The cam (4) is semi-circular, with a connecting part (5) extending from one side, and the piston rod (3) is mounted on the connecting part (5).

3. The inflation mechanism of the air pump according to claim 2, characterized in that, A connecting shaft (9) is fixed on the connecting part (5), and the end of the piston rod (3) is fixed on the connecting shaft (9).

4. The inflation mechanism of the air pump according to claim 1, characterized in that, One end of the cylinder seat (2) is connected to the cylinder head bracket (10), and the air outlet (8) is located on one side of the cylinder head bracket (10).

5. The inflation mechanism of the air pump according to claim 4, characterized in that, The cylinder head bracket (10) is provided with a flow cavity (11), which connects the air outlet (8) and the piston chamber (6).

6. The inflation mechanism of the air pump according to claim 5, characterized in that, A through hole (12) is provided on one side of the flow cavity (11), and a one-way valve (13) is installed between the through hole (12) and the flow cavity (11).

7. The inflation mechanism of the air pump according to claim 1, characterized in that, A sealing ring (14) is fitted on the piston head (7), and the sealing ring (14) fits against the inner wall of the piston cavity (6).

8. The inflation mechanism of the air pump according to claim 4, characterized in that, The cylinder head bracket (10) is provided with a plurality of positioning posts (15), which are fixed on the cylinder seat (2).

9. The inflation mechanism of the air pump according to claim 1, characterized in that, The cylinder seat (2) is provided with a mounting base (16) on one side, and the brushless motor (1) is fixed on the mounting base (16).

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