Air pump with noise reduction structure

Abstract

The utility model discloses an air pump with a noise reduction structure, which comprises a motor, a base shell is fixedly sleeved on the upper side of the motor, a lower cover and an upper cover are sequentially arranged on the base shell, a pump body is clamped between the lower cover and the base shell, a non-return sheet is clamped on the upper side of the middle of the lower cover, and an air passing hole and a through hole are arranged on the lower cover; a noise reduction air groove is formed in the periphery of the air passing hole corresponding to the non-return piece, the noise reduction air groove is formed below the non-return piece, and the part, exposed out of the non-return piece, of the noise reduction air groove is covered by the non-return piece. The utility model belongs to the technical field of air pumps, and particularly relates to an air pump which reduces the contact area between a non-return sheet and a lower cover by arranging a mirror surface at the position where the non-return sheet is connected with the lower cover and arranging a silencing air groove around an air passing hole, thereby reducing the flapping area and weakening noise.

Description

TECHNICAL FIELD

[0001] The utility model belongs to air pump technical field, specifically point to a kind of air pump of reducing noise structure. BACKGROUND

[0002] In the working process of air pump, the movement of each accessory will cause noise between accessories by friction, patting. When pump body moves upward, the gas in cavity is extruded, so that the gas goes out through the gas hole of lower cover, the lower cover of air pump is provided with check piece, as shown in Figure 3 , the tail of check piece pops up a certain height due to gas blowing, when pump body moves downward, the tail of check piece resets downward, this action will have the contact surface of patting lower cover to produce noise, as shown in Figure 4 .

[0003] Since, the contact surface of check piece and lower cover in air pump is only mirror or frosted surface, the contact surface of lower cover and check piece is large, so the noise of patting is also large. INVENTION CONTENTS

[0004] The technical problem to be solved by the utility model is:

[0005] The contact surface of check piece and lower cover in existing air pump is only mirror or frosted surface, the contact surface of lower cover and check piece is large, so the noise is large.

[0006] To solve the above technical problem, the technical scheme provided by the utility model is: a kind of air pump of reducing noise structure, including motor, the lower side of motor is fixed with base shell, the lower cover and upper cover are sequentially arranged on the base shell, pump body is clamped between lower cover and base shell, check piece is clamped on the upper side of the middle part of lower cover, gas hole and through hole are formed in the lower cover;

[0007] The check piece is provided with sound-absorbing groove around the corresponding gas hole, the sound-absorbing groove is arranged below the check piece, part of the check piece is covered by the check piece.

[0008] Further, the output shaft of the motor is connected with eccentric wheel, the eccentric wheel is connected with fork shaft through steel shaft, and the fork shaft is connected with the pin of pump body through through hole.

[0009] Further, the check piece is provided with check umbrella.

[0010] Further, the pump body is made of rubber material.

[0011] Further, the check piece and check umbrella are made of elastic material.

[0012] Further, the gas hole is provided with sealing rib.

[0013] The utility model has the beneficial effects as follows by adopting the above structure:

[0014] By setting the connection between the check sheet and the lower cover to be a mirror surface, and setting a sound-absorbing air groove around the air hole, the contact area between the check sheet and the lower cover is reduced, thereby reducing the beating area and weakening the noise. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 A schematic diagram of the overall structure of the air pump with the noise reduction structure is provided.

[0016] Figure 2 A sectional view of the air pump with the noise reduction structure is provided.

[0017] Figure 3 A use state diagram of the lower cover and the check sheet in the prior art of the air pump with the noise reduction structure is provided.

[0018] Figure 4 A structure schematic diagram of the lower cover in the prior art of the air pump with the noise reduction structure is provided.

[0019] Figure 5 A structure schematic diagram of the lower cover of the air pump with the noise reduction structure is provided.

[0020] Figure 6 A sectional view of the lower cover and the check sheet of the air pump with the noise reduction structure is provided.

[0021] Among them, the motor 1, the eccentric wheel 2, the steel shaft 3, the fork shaft 4, the base shell 5, the lower cover 6, the upper cover 7, the pump body 8, the through hole 9, the pin 10, the air hole 11, the through hole 12, the check sheet 13, the check umbrella 14, the sound-absorbing air groove 15, and the sealing rib 16.

[0022] The accompanying drawings are used to provide a further understanding of the present application, and constitute a part of the specification, and are used to explain the present application together with the embodiments of the present application, and do not constitute a limitation on the present application. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0024] I. Working mode:

[0025] When the motor 1 is powered on, it drives the eccentric wheel 2 to rotate, and then the steel shaft 3 transmits the eccentric power to the fork shaft 4, causing the end of the fork shaft 4 to swing up and down. The end of the fork shaft 4 is fixed to the pin 10 of the pump body 8 through the through hole 9, so the rubber pump body 8 is also pushing and pulling up and down.

[0026] The lower cover 6 is equipped with a flexible anti-reverse umbrella 14 and an anti-reverse plate 13. The up-and-down pushing and pulling of the pump body 8 creates cavity pressure in the air chamber, thereby causing the gas to flow in one direction (e.g., Figure 2 ).

[0027] II. Noise Formation

[0028] During the operation of the air pump, the movement of various components causes friction and knocking between them, generating noise. When the pump body 8 moves upward, the gas inside the cavity is compressed, causing it to escape through the air passage 11 of the lower cover 6 (e.g., Figure 3 When the gas is blown out, the tail of the check plate 13 bounces up to a certain height. When the pump body 8 moves downward, the tail of the check plate 13 returns to its original position. This action will cause noise by hitting the contact surface of the lower cover 6.

[0029] III. Description of Innovation Points

[0030] Typical market structure: The contact surface between the anti-reverse slip 13 and the lower cover 6 is only made of mirror or frosted surface, and the contact surface between the lower cover 6 and the anti-reverse slip 13 is large (e.g., Figure 4 ).

[0031] To reduce the noise generated by the anti-reverse valve 13 striking the lower cover 6 during the circulating air process, a sound-absorbing groove 15 is provided on the contact surface between the lower cover 6 and the anti-reverse valve 13 (e.g., Figure 2 , 5 6) The silencing air groove 15 is arranged around the air passage 11 of the lower cover 6, with a certain depth, so as to reduce the contact area between the anti-reverse plate 13 and the lower cover 6, that is, to reduce the striking area of ​​the anti-reverse plate 13, thereby reducing the striking sound. Since the silencing air groove 15 is arranged below the anti-reverse plate 13, it plays a role in reducing noise transmission. The air passage 11 is provided with sealing ribs 16.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0033] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

[0034] The above describes the present application and its embodiments, which are not restrictive, and the embodiments shown in the drawings are only one of the embodiments of the present application, and the actual structure is not limited thereto. In summary, if a person skilled in the art is inspired, without departing from the creative purpose of the present application, without creative design, similar structure and embodiments to the technical solution, which should belong to the protection scope of the present application.

Claims

1. A noise-reducing air pump, comprising a motor (1), a base housing (5) fixedly sleeved on the upper side of the motor (1), a lower cover (6) and an upper cover (7) sequentially provided on the base housing (5), a pump body (8) being engaged between the lower cover (6) and the base housing (5), a check plate (13) being engaged on the upper side of the middle part of the lower cover (6), and an air passage hole (11) and a through hole (12) being provided on the lower cover (6); characterized in that: The air passage (11) corresponding to the anti-reverse plate (13) is surrounded by a noise-absorbing groove (15), which is arranged below the anti-reverse plate (13), with part of the anti-reverse plate (13) exposed and part of it covered by the anti-reverse plate (13).

2. The air pump with a noise reduction structure according to claim 1, characterized in that: An eccentric wheel (2) is connected to the output shaft of the motor (1). A fork shaft (4) is connected to the eccentric wheel (2) via a steel shaft (3). The fork shaft (4) is connected to the pin (10) of the pump body (8) via a through hole (9).

3. The air pump with a noise reduction structure according to claim 1, characterized in that: The anti-reverse plate (13) is surrounded by an anti-reverse umbrella (14).

4. The air pump with a noise reduction structure according to claim 2, characterized in that: The pump body (8) is made of rubber.

5. The air pump with a noise reduction structure according to claim 3, characterized in that: The anti-reverse plate (13) and anti-reverse umbrella (14) are made of elastic material.

6. The air pump with a noise reduction structure according to claim 1, characterized in that: A sealing rib (16) is provided on the air vent (11).

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