Air pump core and air pump

Abstract

The air pump machine core comprises a motor, a support, an air cylinder and an air cylinder cover which are sequentially connected, a machine core cover is arranged on the side face of the support, the motor is in driving connection with a connecting rod so that a rod head of the connecting rod can slide up and down in an inner cavity of the air cylinder, and the rod head of the connecting rod is provided with a piston ring; an air hole is further formed in the rod head of the connecting rod, is in a closed state when the connecting rod moves downwards and is in an open state when the connecting rod moves upwards; the support forms an extending part in the direction of the air cylinder, the extending part wraps at least part of the outer side wall of the air cylinder, at least one air inlet channel is formed between the extending part and the outer side wall of the air cylinder, and the air inlet channel is communicated with an inner cavity of the air cylinder; a check valve is arranged at the bottom end of the air cylinder. The utility model provides an air pump core and an air pump, which have an air inlet cooling function and are convenient to assemble.

Description

Technical Field

[0001] This utility model relates to the field of air pump technology, specifically to an air pump core and an air pump. Background Technology

[0002] An air pump is a common tool used to inflate objects, widely used in automobiles, motorcycles, bicycles, balls, rubber boats, and other fields. The air pump mechanism, as the core component of the air pump, largely determines its performance and lifespan.

[0003] However, in current air pump mechanisms, the motor drives the connecting rod to move rapidly inside the cylinder during operation. The piston rings on the connecting rod rub against the cylinder continuously, causing the cylinder temperature to rise continuously. Prolonged overheating not only shortens the lifespan of the mechanism but may also pose safety hazards. In addition, the existing assembly methods for air pump mechanisms generally involve aligning the bracket and cylinder flush and then tightening screws, or connecting the cylinder extension to the bracket and then tightening screws. This is inconvenient for both initial production and later maintenance. Utility Model Content

[0004] In order to overcome the above-mentioned shortcomings of the prior art, the present invention provides an air pump core and an air pump, which has a built-in air intake cooling function and is easy to assemble.

[0005] The technical solution adopted by this utility model to solve its technical problem is as follows: an air pump core, including a motor, a bracket, a cylinder and a cylinder head connected in sequence, a core cover is provided on the side of the bracket, the motor drives a connecting rod so that the rod head can slide up and down in the inner cavity of the cylinder, the rod head is provided with a piston ring; the rod head is also provided with an air hole, which is closed when the connecting rod moves downward and open when the connecting rod moves upward; the bracket forms an extension towards the cylinder, the extension covers at least part of the outer wall of the cylinder, and at least one air intake channel is formed between the extension and the outer wall of the cylinder, the air intake channel is connected to the inner cavity of the cylinder; a check valve is provided at the bottom of the cylinder.

[0006] In a preferred embodiment, the extension covers the inner wall of the cylinder and has at least one groove, forming an air intake channel between the groove and the outer wall of the cylinder.

[0007] In a preferred embodiment, the extension is semi-cylindrical and covers at most half of the outer wall of the cylinder.

[0008] In a preferred embodiment, the extension and the support are integrally formed.

[0009] In a preferred embodiment, at least two air intake passages are formed between the extension and the outer wall of the cylinder.

[0010] In a preferred embodiment, at least two intake passages are symmetrically distributed circumferentially on the outer wall of the cylinder.

[0011] In a preferred embodiment, the two sides of the extension extend outward to form a first mounting portion, and the two sides of the cylinder extend outward to form a second mounting portion. The cylinder is connected to the bracket through the first mounting portion and the second mounting portion.

[0012] In a preferred embodiment, the first mounting part is provided with a first mounting hole, and the second mounting part is provided with a second mounting hole; the cylinder is connected to the bracket through the second mounting hole and the first mounting hole.

[0013] In a preferred embodiment, the two sides of the movement cover extend outward to form a third mounting portion, and the third mounting portion is provided with a third mounting hole; the movement cover is mounted on the bracket through the third mounting hole and the first mounting hole.

[0014] An air pump, comprising an air pump mechanism as described in any of the above technical solutions.

[0015] The air pump in this technology uses the aforementioned air pump mechanism to achieve self-cooling of the cylinder, which can improve the cylinder's heat dissipation efficiency, thereby extending its service life, avoiding overheating-induced malfunctions, and improving the user experience; at the same time, it has a simple structure and is easy and quick to install and remove.

[0016] As can be seen from the above technical solution, compared with the prior art, the beneficial effects of this utility model are:

[0017] This utility model provides an air pump core that forms an air intake channel between the extension of the cylinder covered by the bracket and the outer wall of the cylinder. This accelerates the airflow on the cylinder surface to speed up heat dissipation, and enables self-cooling of the cylinder while intake is in progress. This improves the heat dissipation efficiency of the cylinder, enhances the heat dissipation effect during long-term operation, and thus extends the service life of the air pump core, preventing overheating and malfunctions. Furthermore, the air pump core has a simple structure, is easy to assemble and disassemble, and has low production and maintenance costs.

[0018] An air pump using the aforementioned air pump core can extend its service life, improve the user experience, and has a simple structure that is easy and quick to install and remove.

[0019] In addition, other advantages of this invention will be set forth in the description which follows, in part will be obvious from the description, or may be learned by practice of this invention. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall structure of the air pump core of this utility model;

[0022] Figure 2 This is a side view of the air pump core of this utility model;

[0023] Figure 3 This is a view of the air pump core of this utility model from another side;

[0024] Figure 4 for Figure 3 A cross-sectional view at position AA in the middle;

[0025] Figure 5 This is a bottom view of the air pump core of this utility model;

[0026] Figure 6 for Figure 5 Cross-sectional view of the bracket and motor at the CC position;

[0027] Figure 7 This is a bottom view of the connecting rod of this utility model;

[0028] Figure 8 for Figure 7 A sectional view of the connecting rod at position DD;

[0029] Figure 9 for Figure 3 A cross-sectional view of the middle BB position when the connecting rod moves upward;

[0030] Figure 10 for Figure 3 A cross-sectional view of the middle BB position when the connecting rod moves downward;

[0031] Explanation of reference numerals in the attached drawings: 1. Motor; 2. Bracket; 20. Extension; 21. First mounting part; 3. Mechanism cover; 31. Third mounting part; 4. Cylinder; 41. Second mounting part; 5. Cylinder head; 6. Connecting rod; 61. Air port; 7. Piston ring; 8. Check valve; 9. Intake passage. Detailed Implementation

[0032] 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.

[0033] In the description of this utility model, it should be understood that the terms "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model 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, and therefore should not be construed as a limitation of this utility model. Furthermore, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0034] Reference Figure 1-10 This invention describes an air pump core and an air pump according to an embodiment of the present invention.

[0035] In one embodiment, such as Figure 1-10 As shown, an air pump mechanism includes a motor 1, a bracket 2, an air cylinder 4, and an air cylinder head 5 connected in sequence, with a mechanism cover 3 provided on the side of the bracket 2.

[0036] The motor 1 drives the connecting rod 6 so that the rod head of the connecting rod 6 can slide up and down in the inner cavity of the cylinder 4. The rod head of the connecting rod 6 is provided with a piston ring 7. The rod head of the connecting rod 6 is also provided with an air hole 61. The air hole 61 is closed when the connecting rod 6 moves downward and open when the connecting rod 6 moves upward.

[0037] The bracket 2 extends towards the cylinder 4 to form an extension 20, which covers at least part of the outer wall of the cylinder 4, and at least one air intake channel 9 is formed between the extension 20 and the outer wall of the cylinder 4. The air intake channel 9 communicates with the inner cavity of the cylinder 4. A check valve 8 is provided at the bottom of the cylinder 4, which can be used to seal the cylinder 4.

[0038] The extension 20 can be cylindrical or partially cylindrical, allowing it to be fitted onto the upper outer wall surface of the cylinder 4, or to cover a portion of the outer wall surface of the cylinder 4. The cylinder head 5 has an exhaust port for discharging compressed gas. The connecting rod 6 can be an existing piston rod, with the following structure: Figure 7 and Figure 8As shown, the rod head is provided with an air hole 61 and a piston ring groove. The piston ring 7 is installed in the piston ring groove. The air hole 61 extends from the lower surface of the rod head through the lower end face of the piston ring groove to the upper end face of the piston ring groove. When the connecting rod 6 moves downward, the piston ring 7 moves upward and abuts against the upper end face of the piston ring groove, so that the air hole 61 cannot communicate with the upper part of the inner cavity of the cylinder 4, and the air hole 61 is in a closed state. When the connecting rod 6 moves upward, the piston ring 7 moves downward and abuts against the lower end face of the piston ring groove. At this time, the piston ring 7 does not block the air hole 61, and the air hole 61 is in an open state.

[0039] In practice, one end of motor 1 is driven to the connecting rod 6, and the other end can also be driven to connect to a fan. The fan is located above motor 1 and can dissipate heat from motor 1 in a timely manner.

[0040] The working principle of the above-mentioned air pump core is as follows: Figure 9-10 As shown: When the air pump mechanism is not started, the bottom of the cylinder 4 is sealed by the check valve 8. The air pump mechanism is formed by the mechanism cover 3, the bracket 2 and the cylinder 4 to form a sealed space, leaving only the air intake channel 9 for gas to enter and exit. The air intake channel 9 is located between the extension 20 of the cylinder covered by the bracket 2 and the outer wall of the cylinder 4.

[0041] When the air pump mechanism is running, the motor 1 drives the connecting rod 6 to move up and down within the cylinder 4, forming a piston motion. Each movement of the connecting rod 6 generates compressed gas which is discharged through the exhaust port of the cylinder head 5. After the gas is discharged, the check valve 8 blocks the cylinder 4, creating a sealed space. Since the air pump mechanism only has the intake channel 9 for gas to enter and exit, when the connecting rod 6 moves downwards, the air hole 61 is closed by the piston ring 7, and air enters the cylinder cavity above the connecting rod 6 through the intake channel 9. When the connecting rod 6 moves upwards, the air hole 61 on the connecting rod 6 is open, and the gas in the cylinder above the rod head enters the cylinder cavity below the rod head through the air hole 61. Each movement of the connecting rod 6 causes airflow on the surface of the cylinder 4, which improves the cooling speed of the cylinder 4 by accelerating the airflow on the surface of the cylinder 4.

[0042] The air pump mechanism provided in the above embodiment utilizes the extension 20 on the bracket 2 to form an air intake channel 9 between the extension 20 and the outer wall of the cylinder 4. By accelerating the air flow on the surface of the cylinder 4, the heat dissipation of the cylinder 4 is accelerated. The cylinder 4 can be self-cooled while air is being intaked, which improves the heat dissipation efficiency of the cylinder 4 and improves the heat dissipation effect during long-term operation, thereby extending the service life of the air pump mechanism and avoiding failure caused by overheating. Furthermore, the air pump mechanism has a simple structure, is easy to assemble and disassemble, and has low production and maintenance costs.

[0043] In this embodiment, the extension 20 covers the inner wall of the cylinder 4 and has at least one groove, forming an air intake channel 9 between the groove and the outer wall of the cylinder 4.

[0044] The groove can be formed by the inner wall of the arc-shaped protrusion provided on the extension 20, or it can be a groove formed on the inner wall of the extension 20. In specific implementation, the outer wall of the cylinder 4 and the inner wall of the extension 20, except for the air intake channel 9, are in close contact with each other to ensure that the cylinder 4 is firmly connected to the bracket 2, thereby ensuring the working stability of the air pump core.

[0045] In this embodiment, the extension 20 is semi-cylindrical and covers at most half of the outer wall of the cylinder 4.

[0046] In practical applications, the cylinder 4 is generally cylindrical. The extension 20 is set as a semi-cylindrical shape, which can not only cover the outer wall of the cylinder 4 more closely, but also make it easier to install the cylinder 4 into the extension 20.

[0047] In this embodiment, the extension 20 and the bracket 2 are integrally formed, which is simple in structure and easy to install and disassemble.

[0048] In this embodiment, at least two air intake channels 9 are formed between the extension 20 and the outer wall of the cylinder 4. In practice, the more air intake channels 9 there are, the faster the air intake speed of the air pump core will be, and the heat dissipation efficiency will also be improved.

[0049] In this embodiment, at least two intake channels 9 are symmetrically distributed circumferentially on the outer wall of the cylinder 4 to facilitate more uniform heat dissipation.

[0050] In this embodiment, the two sides of the extension 20 extend outward to form the first mounting part 21, and the two sides of the cylinder 4 extend outward to form the second mounting part 41. The cylinder 4 is connected to the bracket 2 through the first mounting part 21 and the second mounting part 41.

[0051] The second mounting part 41 corresponds to the first mounting part 21 in position. For example, the two can completely or partially overlap to facilitate installation. In specific implementation, the connection method between the second mounting part 41 and the first mounting part 21 can be, but is not limited to, screw connection, welding, adhesive bonding, etc.

[0052] The air pump core provided in the above embodiment has a simple structure and can realize quick assembly and disassembly of the bracket 2 and the cylinder 4, reducing the cost of early production and later maintenance.

[0053] In this embodiment, the first mounting part 21 is provided with a first mounting hole, and the second mounting part 41 is provided with a second mounting hole; the cylinder 4 is connected to the bracket 2 through the second mounting hole and the first mounting hole.

[0054] The number of first mounting holes and second mounting holes can be one or more, and the first mounting holes and second mounting holes are provided in correspondence.

[0055] In practice, when installing the cylinder 4 on the bracket 2, the cylinder 4 can be placed directly on the bracket 2 and assembled directly by screws through the first mounting hole and the second mounting hole, which can achieve quick assembly and disassembly.

[0056] In this embodiment, the two sides of the movement cover 3 extend outward to form a third mounting portion 31, and the third mounting portion 31 is provided with a third mounting hole; the movement cover 3 is mounted on the bracket 2 through the third mounting hole and the first mounting hole.

[0057] In the above embodiments, the number of first mounting holes, second mounting holes and third mounting holes can be one or more, and multiple first mounting holes can be arranged from top to bottom. The upper part of the first mounting holes is used to connect with the third mounting hole on the movement cover 3, and the lower part of the first mounting holes is used to connect with the second mounting hole on the cylinder 4, which further facilitates the mounting of the movement cover 3 onto the bracket 2.

[0058] In specific implementation, taking the first mounting part 21 with three first mounting holes on each side as an example, the second mounting part 41 of the cylinder 4 can have two second mounting holes on each side, and the third mounting part 31 can be located on both sides of the lower part of the mechanism cover 3, with one third mounting hole on each side. The third mounting hole is connected to the uppermost first mounting hole by screws, and the two second mounting holes are connected to the two lower first mounting holes by screws.

[0059] In another embodiment, the present invention provides an air pump that includes the air pump mechanism as described in any of the above embodiments.

[0060] In a specific implementation, the air pump includes a housing, an air pump core, and a control circuit board for controlling the operation of the air pump core, all of which are installed inside the housing.

[0061] The air pump provided in the above embodiments uses the aforementioned air pump core and adopts an intake self-cooling structure to achieve self-cooling and heat dissipation of the cylinder, which can improve the heat dissipation efficiency of the cylinder, thereby extending its service life, avoiding overheating and causing failure, and improving the user experience; at the same time, the structure is simple and easy to assemble and disassemble.

[0062] The air pump core and other components and operation of the air pump according to the embodiments of this utility model are known to those skilled in the art and will not be described in detail here.

[0063] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0064] In the description of this specification, references to the terms "embodiment," "specific embodiment," "example," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example that is included in at least one embodiment or example of the present invention.

[0065] In this specification, the illustrative expressions of the terms used do not necessarily refer to the same embodiments or examples. Moreover, the specific features, structures, materials, or characteristics described may be combined with each other in any suitable manner in one or more embodiments or examples without interference or contradiction.

Claims

1. An air pump mechanism, comprising a motor (1), a bracket (2), a cylinder (4), and a cylinder head (5) connected in sequence, wherein a mechanism cover (3) is provided on the side of the bracket (2), characterized in that: The motor (1) drives a connecting rod (6) so that the rod head of the connecting rod (6) can slide up and down in the inner cavity of the cylinder (4). The rod head of the connecting rod (6) is provided with a piston ring (7). The rod head of the connecting rod (6) is also provided with an air hole (61). The air hole (61) is closed when the connecting rod (6) moves downward and open when the connecting rod (6) moves upward. The bracket (2) forms an extension (20) towards the cylinder (4), the extension (20) covers at least a portion of the outer side wall of the cylinder (4), and at least one air intake channel (9) is formed between the extension (20) and the outer side wall of the cylinder (4), the air intake channel (9) is connected to the inner cavity of the cylinder (4); a check valve (8) is provided at the bottom end of the cylinder (4).

2. The air pump core according to claim 1, characterized in that: The extension (20) covers the inner wall of the cylinder (4) and has at least one groove, and the groove and the outer wall of the cylinder (4) form the air intake channel (9).

3. The air pump core according to claim 1, characterized in that: The extension (20) is semi-cylindrical and covers at most half of the outer sidewall of the cylinder (4).

4. The air pump core according to claim 1, characterized in that: The extension (20) and the bracket (2) are integrally formed.

5. The air pump core according to claim 1, characterized in that: At least two air intake passages (9) are formed between the extension (20) and the outer wall of the cylinder (4).

6. The air pump core according to claim 5, characterized in that: The at least two intake channels (9) are symmetrically distributed circumferentially on the outer side wall of the cylinder (4).

7. An air pump core according to any one of claims 1 to 6, characterized in that: The two sides of the extension (20) extend outward to form a first mounting part (21), and the two sides of the cylinder (4) extend outward to form a second mounting part (41). The cylinder (4) is connected to the bracket (2) through the first mounting part and the second mounting part.

8. The air pump core according to claim 7, characterized in that: The first mounting part (21) is provided with a first mounting hole, and the second mounting part (41) is provided with a second mounting hole; the cylinder (4) is connected to the bracket (2) through the second mounting hole and the first mounting hole.

9. The air pump core according to claim 8, characterized in that: The two sides of the movement cover (3) extend outward to form a third mounting part (31), and the third mounting part (31) is provided with a third mounting hole; the movement cover (3) is mounted on the bracket (2) through the third mounting hole and the first mounting hole.

10. An air pump, characterized in that: Includes the air pump mechanism as described in any one of claims 1 to 9.

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