Diaphragm air pump

Abstract

The utility model discloses a diaphragm air pump which comprises a shell, a power source and an air chamber are installed on the shell, a plurality of diaphragms are arranged on the air chamber, an output shaft of the power source is connected with the diaphragms through an eccentric wheel mechanism, the eccentric wheel mechanism comprises a swing frame and a driving frame, a plurality of pressing discs are arranged on the swing frame, and the pressing discs and the diaphragms are in one-to-one correspondence and are connected. A containing groove is formed in the middle of the swing frame, a bearing is arranged in the containing groove, the driving frame is connected with an output shaft of the power source, the driving frame is rotationally connected with an eccentric wheel through a lining rod, and the eccentric wheel penetrates into the bearing. The lining rod drives the eccentric wheel to move along the bearing, the swing frame can be driven to swing, the eccentric wheel is driven by the lining rod to make contact with the bearing and can rotate relative to the bearing, abrasion is effectively reduced, unbalanced rotation of the eccentric wheel is avoided, the service life of the air pump is prolonged, and the working pressure of the air pump is kept in a stable state.

Description

Technical Field

[0001] The utility model relates to the technical field of diaphragm air pumps, in particular to a diaphragm air pump. Background Art

[0002] In order to realize the process of air intake and exhaust, the existing diaphragm air pump basically uses an eccentric wheel mechanism, a traditional eccentric wheel structure.

[0003] At present, the traditional eccentric wheel structure is that the output shaft of the motor is rotatably connected to the eccentric wheel, and the eccentric wheel is provided with an eccentric inclined hole. The steel needle of the swing frame is inserted into the eccentric inclined hole, and the motor drives the eccentric wheel to rotate, and the eccentric wheel inclined hole drives the swing frame steel needle to realize eccentric rotation. However, in this process, the eccentric wheel hole is easily worn because the swing frame steel needle rotates in the eccentric wheel hole, which will cause the eccentric wheel to rotate unbalancedly and produce bad swings, causing the air pump pressure to decay or fail. Therefore, the utility model proposes a diaphragm air pump that can solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide a diaphragm air pump to solve the problems raised in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical solutions: a diaphragm air pump, comprising a housing, a power source and an air chamber are mounted on the housing, a plurality of diaphragms are arranged on the air chamber, and an output shaft of the power source is connected to the plurality of diaphragms through an eccentric wheel mechanism;

[0006] The eccentric wheel mechanism includes a swing frame and a driving frame. A plurality of pressure plates are arranged on the swing frame. The pressure plates and the diaphragms correspond to and are connected one by one. A receiving groove is provided in the middle of the swing frame. A bearing is arranged in the receiving groove. The driving frame is connected to the output shaft of the power source. The driving frame is rotatably connected to the eccentric wheel through a lining rod. The eccentric wheel passes through the bearing.

[0007] As a preferred technical solution of the utility model, a chuck is provided on the output shaft of the power source, and the driving frame is clamped with the chuck via a clamping rod.

[0008] Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model is a diaphragm air pump, which drives the eccentric wheel to move along the bearing through the liner rod, and can drive the swing frame to swing, so that the eccentric wheel is driven by the liner rod to contact the bearing and can rotate relative to the bearing, effectively reducing wear, avoiding unbalanced rotation of the eccentric wheel, extending the service life of the air pump, and maintaining the working pressure of the air pump in a stable state. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0010] Figure 2 This is a schematic diagram of the connection between the eccentric wheel mechanism and a plurality of diaphragms of the utility model;

[0011] Figure 3 This is a schematic diagram of the structure of the eccentric wheel mechanism of the utility model;

[0012] Figure 4 This is a schematic diagram of the structure of the swing frame of the utility model;

[0013] Figure 5 This is a schematic diagram of the separation of the drive frame and the chuck of the utility model;

[0014] In the figure: 10, housing; 20, power source; 21, chuck; 22, bump; 30, air chamber; 40, diaphragm; 50, eccentric wheel mechanism; 51, swing frame; 52, pressure plate; 53, bearing; 54, drive frame; 55, lining rod; 56, eccentric wheel; 57, clamping rod; 58, groove. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0016] Example 1

[0017] See also Figure 1-5 A diaphragm air pump includes a housing 10, a power source 20 and an air chamber 30 are mounted on the housing 10, a plurality of diaphragms 40 are arranged on the air chamber 30, an output shaft of the power source 20 is connected to the plurality of diaphragms 40 through an eccentric wheel mechanism 50, and the power source 20 is preferably a servo motor.

[0018] The eccentric wheel mechanism 50 includes a swing frame 51 and a driving frame 54. A plurality of pressure plates 52 are arranged on the swing frame 51. The pressure plates 52 and the diaphragms 40 correspond to and are connected one by one. A receiving groove is provided in the middle of the swing frame 51. A bearing 53 is arranged in the receiving groove. The driving frame 54 is connected to the output shaft of the power source 20. The driving frame 54 is rotatably connected to an eccentric wheel 56 through a liner rod 55. The eccentric wheel 56 passes through the bearing 53 and can rotate relative to the bearing 53.

[0019] Example 2

[0020] See also Figure 1-5 A diaphragm air pump includes a housing 10, a power source 20 and an air chamber 30 are mounted on the housing 10, a plurality of diaphragms 40 are arranged on the air chamber 30, an output shaft of the power source 20 is connected to the plurality of diaphragms 40 through an eccentric wheel mechanism 50, and the power source 20 is preferably a servo motor.

[0021] The eccentric wheel mechanism 50 includes a swing frame 51 and a driving frame 54. A plurality of pressure plates 52 are arranged on the swing frame 51. The pressure plates 52 and the diaphragms 40 correspond to and are connected one by one. A receiving groove is provided in the middle of the swing frame 51. A bearing 53 is arranged in the receiving groove. The driving frame 54 is connected to the output shaft of the power source 20. The driving frame 54 is rotatably connected to an eccentric wheel 56 through a liner rod 55. The eccentric wheel 56 passes through the bearing 53 and can rotate relative to the bearing 53.

[0022] A chuck 21 is provided on the output shaft of the power source 20, and the drive frame 54 is connected to the chuck 21 through a clamping rod 57, and a protrusion 22 is connected to the bottom of the chuck 21. A groove 58 is provided on the drive frame 54, and the protrusion 22 is engaged with the groove 58. The clamping rod 57 is made of a material with a certain toughness, such as rubber, etc., which facilitates the removal of the drive frame 54 from the output shaft of the power source 20.

[0023] Working principle:

[0024] The output shaft of the power source 20 rotates, and the eccentric wheel mechanism 50 stretches and compresses a plurality of diaphragms 40 to achieve air intake and exhaust. The eccentric wheel 56 is driven by the liner rod 55 to move along the bearing 53, which can drive the swing frame 51 to swing, so that the eccentric wheel 56 is driven by the liner rod 55 to contact the bearing 53 and can rotate relative to the bearing 53, thereby effectively reducing wear and tear, avoiding unbalanced rotation of the eccentric wheel 56, extending the service life of the air pump, and maintaining a stable working pressure of the air pump.

[0025] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A diaphragm air pump, characterized in that: It comprises a shell, a power source and an air chamber are mounted on the shell, a plurality of diaphragms are arranged on the air chamber, and an output shaft of the power source is connected to the plurality of diaphragms through an eccentric wheel mechanism; The eccentric wheel mechanism includes a swing frame and a driving frame. A plurality of pressure plates are arranged on the swing frame. The pressure plates and the diaphragms correspond to and are connected one by one. A receiving groove is provided in the middle of the swing frame. A bearing is arranged in the receiving groove. The driving frame is connected to the output shaft of the power source. The driving frame is rotatably connected to the eccentric wheel through a lining rod. The eccentric wheel passes through the bearing.

2. A diaphragm air pump according to claim 1, characterized in that: A chuck is arranged on the output shaft of the power source, and the driving frame is clamped with the chuck via a clamping rod.

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