Inflator pump

Abstract

The inflator pump comprises a motor, a gear, a connecting rod and a machine core shell, and the motor is fixed to the machine core shell; the interior of the movement shell is divided into a sealed first chamber and a second chamber communicated with the outside, the gear is arranged in the first chamber, and the connecting rod is arranged in the second chamber; one end of a rotating shaft of the motor extends into the first cavity and is in transmission connection with the gear which is in transmission connection with the connecting rod. The utility model provides an inflator pump. Working noise of the inflator pump can be reduced.

Description

Technical Field

[0001] This utility model relates to the field of air pump technology, specifically to 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. However, existing air pumps on the market produce a lot of noise during operation due to the combined sound of gear transmission and connecting rod compression of gas, which negatively impacts the user experience. Utility Model Content

[0003] In order to overcome the above-mentioned shortcomings of the prior art, the present invention provides an air pump that can reduce the operating noise of the air pump.

[0004] The technical solution adopted by this utility model to solve its technical problem is: an air pump, including a motor, a gear, a connecting rod and a core housing, the motor being fixed on the core housing; the interior of the core housing is divided into a sealed first chamber and a second chamber connected to the outside, the gear is located in the first chamber and the connecting rod is located in the second chamber; one end of the motor shaft extends into the first chamber and is connected to the gear for transmission, and the gear is connected to the connecting rod for transmission.

[0005] In a preferred embodiment, the core housing includes a motor bracket, a core support, and a dust cover. The motor bracket and the dust cover are fixedly connected to both sides of the core support. The motor is fixed to one side of the motor bracket, and the other side of the motor bracket, together with the core support, forms a first chamber. The core support and the dust cover together form a second chamber. The aforementioned air pump utilizes the existing support structure of an air pump to form a sealed space for accommodating the gears. This design is simple and facilitates assembly and maintenance.

[0006] In a preferred embodiment, the air pump further includes a pin, a bearing, and a cam. The bearing is located in the first chamber, and the cam is located in the second chamber. A gear is coaxially connected to the cam via the pin. The bearing is sleeved in the middle of the pin, and the cam is connected to the upper end of a connecting rod to drive the connecting rod to move up and down in the second chamber. In this technology, the gear drives the cam to rotate coaxially via the pin, and the cam drives the connecting rod to move up and down in the second chamber, compressing air.

[0007] In a preferred embodiment, the movement support has a mounting groove on the side facing the gear, the bearing is installed in the mounting groove, and the outer side of the bearing is sealed to the inner side of the mounting groove, thereby ensuring the airtightness of the first chamber.

[0008] In a preferred embodiment, a second through hole is provided in the middle of the bottom of the mounting groove for the shaft pin to pass through. An annular boss is provided on one side of the cam, which extends into the second through hole. The inner side of the annular boss fits tightly with the outer side of the shaft pin, and the end face of the annular boss abuts against the end face of the bearing, which can ensure the sealing of the first chamber and give the air pump a good noise reduction effect.

[0009] In a preferred embodiment, the motor bracket has a first through hole through which one end of the motor shaft passes, and a positioning boss is provided at the root of the motor shaft. The inner side of the first through hole and the outer side of the positioning boss are sealed together, which can not only achieve a firm installation of the motor, but also ensure the sealing of the first chamber and improve the noise reduction effect.

[0010] In a preferred embodiment, one end of the motor shaft is provided with meshing teeth that mesh with a gear for transmission. In this technology, the motor drives the gear to rotate through the meshing teeth on the shaft, thereby causing the connecting rod to move up and down within the second chamber.

[0011] In a preferred embodiment, the motor bracket is fixedly connected to one side of the core support by screws, ensuring a stable structure and guaranteeing the stability of the air pump; the dust cover is fixedly snapped onto the other side of the core support, facilitating disassembly and maintenance.

[0012] In a preferred embodiment, a fan is connected to the other end of the motor shaft to provide heat dissipation.

[0013] As can be seen from the above technical solution, compared with the prior art, the beneficial effects of this utility model are:

[0014] The present invention provides an air pump in which the gear and connecting rod are separately arranged on both sides inside the core housing. The gear is located in a sealed first chamber. Since the first chamber forms a sealed space, the sound of the gear running is lower frequency, while the sound of the connecting rod compressing gas is higher frequency. As a result, when the air pump is running, the sound of the gear and the sound of the connecting rod compressing gas will not overlap, thereby reducing the overall noise of the air pump and improving the problem of high noise in existing air pumps.

[0015] In addition, other advantages of this invention will be set forth in the description which follows, and in part will be obvious from the description or may be learned by practice of this invention. Attached Figure Description

[0016] 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.

[0017] Figure 1 This is a front view of the air pump in this utility model;

[0018] Figure 2 The air pump in this utility model is Figure 1 A cross-sectional view at position AA in the middle;

[0019] Figure 3 This is a side view of the air pump in this utility model;

[0020] Figure 4 This is an exploded view of the air pump in this utility model;

[0021] Explanation of reference numerals in the attached figures:

[0022] 1. Motor; 11. First through hole; 12. Meshing teeth; 2. Gear; 21. Mounting groove; 22. Second through hole; 3. Connecting rod; 4. Mechanism housing; 41. Motor bracket; 42. Mechanism bracket; 43. Dust cover; 5. Shaft pin; 6. Bearing; 7. Cam; 8. Fan. Detailed Implementation

[0023] 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.

[0024] 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 on this utility model. Furthermore, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0025] Reference Figure 1-4This invention describes an air pump according to an embodiment of the present invention.

[0026] In one embodiment, such as Figure 1-4 As shown, an air pump includes a motor 1, a gear 2, a connecting rod 3, and a core housing 4. The motor 1 is fixed to the core housing 4. The interior of the core housing 4 is divided into a sealed first chamber and a second chamber connected to the outside. The gear 2 is located in the first chamber, and the connecting rod 3 is located in the second chamber. One end of the shaft of the motor 1 extends into the first chamber and is connected to the gear 2 in a transmission connection. The gear 2 is connected to the connecting rod 3 in a transmission connection.

[0027] The mechanism housing 4 can be composed of several connected parts or be a one-piece molded structure. Its interior is divided into a first chamber and a second chamber, which are used to house the gear 2 and the connecting rod 3, respectively.

[0028] In practice, motor 1 drives gear 2 to rotate, and gear 2 drives connecting rod 3 to move up and down in the second chamber, compressing air.

[0029] The air pump provided in the above embodiment separates the gear 2 and the connecting rod 3 on both sides inside the core housing 4. The gear 2 is located in a sealed first chamber. Since the first chamber forms a sealed space, the sound of the gear 2 during operation is lower frequency, while the sound of the connecting rod 3 compressing gas is higher frequency. As a result, when the air pump is running, the sound of the gear 2 and the sound of the connecting rod 3 compressing gas will not overlap, thereby reducing the overall noise of the air pump and improving the problem of high noise in existing air pumps.

[0030] In this embodiment, the mechanism housing 4 includes a motor bracket 41, a mechanism bracket 42, and a dust cover 43, with the motor bracket 41 and the dust cover 43 respectively fixedly connected to both sides of the mechanism bracket 42;

[0031] The motor 1 is fixed to one side of the motor bracket 41, and the other side of the motor bracket 41 and the core bracket 42 form a first chamber. The core bracket 42 and the dust cover 43 form a second chamber.

[0032] The air pump in the above embodiment forms a first chamber and a second chamber by means of a motor bracket 41 and a core bracket 42, and a core bracket 42 and a dust cover 43 respectively. The existing bracket structure of the air pump can be used to form a sealed space for accommodating the gear 2. The structure is simple and easy to assemble and maintain.

[0033] In this embodiment, the air pump also includes a shaft pin 5, a bearing 6, and a cam 7. The bearing 6 is located in the first chamber, and the cam 7 is located in the second chamber.

[0034] Gear 2 is coaxially connected to cam 7 via pin 5. Bearing 6 is sleeved in the middle of pin 5. Cam 7 is connected to the upper end of connecting rod 3 to drive connecting rod 3 to move up and down in the second chamber.

[0035] In practice, gear 2 drives cam 7 to rotate coaxially through pin 5, and cam 7 drives connecting rod 3 to move up and down in the second chamber to compress air.

[0036] In the above embodiment, an air pump is provided in which gear 2 is connected to connecting rod 3 via shaft pin 5 and cam 7. There is a certain distance between the two, so that gear 2 and connecting rod 3 can be respectively set on both sides inside the inner housing 4 of the mechanism, which makes it convenient to set gear 2 in the first chamber isolated from connecting rod 3.

[0037] In this embodiment, the mechanism support 42 is provided with a mounting groove 21 on the side facing the gear 2, the bearing 6 is installed in the mounting groove 21, and the outer side of the bearing 6 is sealed to the inner side of the mounting groove 21.

[0038] The mounting groove 21 is formed by a ring of protrusions on the side of the movement support 42. The bearing 6 is installed in the mounting groove 21 and is sealed to the mounting groove 21, thereby ensuring the airtightness of the first chamber.

[0039] In this embodiment, a second through hole 22 for the shaft pin 5 to pass through is provided in the middle of the bottom of the mounting groove 21. An annular boss extending into the second through hole 22 is provided on one side of the cam 7. The inner side of the annular boss is in close contact with the outer side of the shaft pin 5, and the end face of the annular boss abuts against the end face of the bearing 6.

[0040] One end of the pin 5 is connected to the gear 2, and the other end passes through the bearing 6 and the second through hole 22 to connect to the cam 7. The inner side of the center hole of the cam 7 is in close contact with the outer side of the pin 5, so that the cam 7 rotates around the pin 5. The annular boss is set with the same hole as the center hole of the cam 7, so its inner side is also in close contact with the outer side of the pin 5.

[0041] In practice, there is a certain gap between the side wall of the shaft pin 5 and the second through hole 22. The annular boss on the side of the cam 7 extends into the second through hole 22 until it abuts against the end face of the bearing 6, which can completely isolate the first chamber and the second chamber, ensure the sealing of the first chamber, and make the air pump have a good noise reduction effect.

[0042] In this embodiment, the motor bracket 41 has a first through hole 11 through which one end of the motor 1's shaft passes. A positioning boss is provided at the root of the motor 1's shaft. The inner surface of the first through hole 11 and the outer surface of the positioning boss are sealed together. Through the cooperation between the first through hole 11 and the positioning boss, the above embodiment achieves both a secure installation of the motor 1 and ensures the sealing of the first chamber, thus improving noise reduction.

[0043] In this embodiment, one end of the shaft of the motor 1 is provided with a meshing tooth 12, which meshes with the gear 2 for transmission. In the above-mentioned air pump, the motor 1 drives the gear 2 to rotate through the meshing tooth 12 on the shaft, thereby driving the connecting rod 3 to move up and down in the second chamber to achieve air compression. The structure is simple and the transmission stability is good.

[0044] In this embodiment, the motor bracket 41 is fixedly connected to one side of the core bracket 42 by screws, which makes the structure stable and ensures the stability of the air pump; the dust cover 43 is fixedly snapped onto the other side of the core bracket 42, which facilitates disassembly and maintenance.

[0045] In this embodiment, a fan 8 is driven and connected to the other end of the shaft of motor 1.

[0046] When the air pump is working, the shaft of motor 1 drives fan 8 to work, thereby cooling the air pump and playing a cooling role.

[0047] Other components and operations 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.

[0048] 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.

[0049] 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.

[0050] 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, characterized in that: It includes a motor (1), a gear (2), a connecting rod (3) and a mechanism housing (4), wherein the motor (1) is fixed to the mechanism housing (4); The interior of the mechanism housing (4) is divided into a sealed first chamber and a second chamber connected to the outside. The gear (2) is located in the first chamber and the connecting rod (3) is located in the second chamber. One end of the shaft of the motor (1) extends into the first chamber and is connected to the gear (2) in a transmission connection. The gear (2) is connected to the connecting rod (3) in a transmission connection.

2. An air pump according to claim 1, characterized in that: The mechanism housing (4) includes a motor bracket (41), a mechanism bracket (42), and a dust cover (43), wherein the motor bracket (41) and the dust cover (43) are respectively fixedly connected to both sides of the mechanism bracket (42); The motor (1) is fixed to one side of the motor bracket (41), and the other side of the motor bracket (41) and the mechanism bracket (42) enclose to form the first chamber, and the mechanism bracket (42) and the dust cover (43) enclose to form the second chamber.

3. An air pump according to claim 2, characterized in that: The air pump also includes a shaft pin (5), a bearing (6) and a cam (7), the bearing (6) being disposed in the first chamber and the cam (7) being disposed in the second chamber; The gear (2) is coaxially connected to the cam (7) via the pin (5), the bearing (6) is sleeved on the middle part of the pin (5), and the cam (7) is connected to the upper end of the connecting rod (3) to drive the connecting rod (3) to move up and down in the second chamber.

4. An air pump according to claim 3, characterized in that: The mechanism support (42) has a mounting groove (21) on the side facing the gear (2), the bearing (6) is installed in the mounting groove (21), and the outer side of the bearing (6) is sealed to the inner side of the mounting groove (21).

5. An air pump according to claim 4, characterized in that: The bottom center of the mounting groove (21) is provided with a second through hole (22) for the shaft pin (5) to pass through. One side of the cam (7) is provided with an annular boss that extends into the second through hole (22). The inner side of the annular boss is in close contact with the outer side of the shaft pin (5), and the end face of the annular boss abuts against the end face of the bearing (6).

6. An air pump according to any one of claims 2 to 5, characterized in that: The motor bracket (41) has a first through hole (11) through which one end of the motor (1) shaft passes. The root of the motor (1) shaft has a positioning boss. The inner side of the first through hole (11) is sealed to the outer side of the positioning boss.

7. An air pump according to claim 6, characterized in that: The motor (1) has a meshing tooth (12) at one end of its shaft, which meshes with the gear (2) for transmission.

8. An air pump according to claim 2, characterized in that: The motor bracket (41) is fixedly connected to one side of the mechanism bracket (42) by a screw; the dust cover (43) is fixedly snapped onto the other side of the mechanism bracket (42).

9. An air pump according to claim 1, characterized in that: The other end of the shaft of the motor (1) is connected to a fan (8).

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