Oxygen generator circuit board fixing structure

Abstract

The utility model discloses an oxygenerator circuit board fixing structure, a shell of an oxygenerator comprises a front cover and a rear cover, a compressor cover is arranged between the front cover and the rear cover, the rear cover is provided with an upper limiting frame and a lower limiting frame, the rear upper corner of a circuit board is limited in the upper limiting frame, and the lower limiting frame is provided with a lower limiting frame. The rear lower corner of the circuit board is limited in the lower limiting frame; a limiting rib plate is arranged on the front cover, the limiting rib plate is horizontally arranged, the limiting rib plate is provided with a first limiting groove, and the edge of the front end of the circuit board is limited in the first limiting groove; the compressor cover is provided with a second limiting groove, and the front lower corner of the circuit board is limited in the second limiting groove. According to the scheme, extra tools are not needed during assembly, the circuit board is completely fixed by utilizing the structures of the existing parts in the oxygen generator, the assembly is simple, the assembly efficiency of the whole machine is improved, and the later product maintenance is convenient.

Description

Technical Field

[0001] The utility model relates to a fixing structure for an oxygen generator circuit board, belonging to the technical field of oxygen generator circuit board fixing. Background Art

[0002] The circuit board is an important component inside the oxygen generator, used for supplying power and controlling components such as the compressor, distribution valve, and fan inside the oxygen generator. The circuit board is usually fixed inside the housing of the oxygen generator through fasteners such as screws. For example, the utility model patent with the patent publication number CN212573081U discloses a printed circuit board convenient for assembly, mainly using screws to fix the circuit board, with a relatively long assembly operation process and the need for tool assistance for fixing.

[0003] The utility model patent with the authorization publication number CN216057950U discloses a new type of circuit board convenient for assembly, which does not require the use of other auxiliary tools during assembly, but the overall structure is relatively complex. Content of the Utility Model

[0004] In order to overcome the problems existing in the prior art, the utility model provides a fixing structure for an oxygen generator circuit board, which can realize the quick and convenient installation of the oxygen generator circuit board without fasteners. The specific technical solutions are as follows.

[0005] A fixing structure for an oxygen generator circuit board, the housing of the oxygen generator includes a front cover and a rear cover, and a compressor cover is further arranged between the front cover and the rear cover. It is characterized in that:

[0006] An upper limit frame and a lower limit frame are arranged on the rear cover, the upper rear corner of the circuit board is limited within the upper limit frame, and the lower rear corner of the circuit board is limited within the lower limit frame;

[0007] A limit rib plate is arranged on the front cover, the limit rib plate is arranged horizontally, the limit rib plate has a first limit groove, and the front edge of the circuit board is limited within the first limit groove;

[0008] The compressor cover is provided with a second limit groove, and the lower front corner of the circuit board is limited within the second limit groove.

[0009] Adopting the above technical solution, the fixed installation of the circuit board can be realized without using fasteners. After the front cover, rear cover, and compressor cover are assembled, the circuit board is stably and reliably positioned and installed, and no auxiliary tools are required.

[0010] Further, a card slot is provided at the front edge of the circuit board, and the card slot is arranged corresponding to the first limiting groove. When the circuit board is in the installed state, the card slot and the first limiting groove are engaged with each other. The circuit board is arranged substantially vertically, while the limiting rib plate on the front cover is arranged substantially horizontally. After the card slot and the first limiting groove are engaged with each other, the circuit board can be prevented from moving in the up-and-down direction and the left-and-right direction.

[0011] Further, a chamfer is provided at the open end of the card slot, and a chamfer is also provided at the open end of the first limiting groove. The provision of the chamfer makes the open ends of the card slot and the first limiting groove both in a V shape, which is beneficial to guiding the engagement of the card slot and the first limiting groove with each other when installing the front cover and avoiding mutual interference.

[0012] Further, the upper limiting frame includes a limiting plate above and a slot below; the lower limiting frame includes a limiting plate below and a slot above. The limiting plate can limit the upper and lower movement limits of the circuit board, and the slot can limit the left and right movement of the circuit board.

[0013] Further, a limiting post is provided on the compressor cover, and the second limiting groove is provided on the limiting post. The second limiting groove can not only limit the left and right movement of the circuit board, but also define the limit positions of the circuit board moving downward and forward.

[0014] When the circuit board is in the installed state, the upper limiting frame, the lower limiting frame, the first limiting groove, and the second limiting groove all limit the left and right movement of the circuit board. After the card slot of the circuit board and the first limiting groove are engaged with each other, the circuit board can be prevented from moving in the up-and-down direction and the left-and-right direction. The first limiting groove, the upper limiting frame, and the lower limiting frame together define the positioning of the circuit board in the front-and-back direction.

[0015] In this solution, no additional tools are required during assembly. By using the structures of the existing parts in the oxygen generator, the circuit board is completely fixed. The assembly is simple, the assembly efficiency of the whole unit is improved, and the maintenance of the later product is convenient. Description of the Drawings

[0016] Figure 1 is a schematic diagram of the circuit board fixing structure of the oxygen generator of the present utility model;

[0017] Figure 2 is a partial schematic diagram of the rear cover;

[0018] Figure 3 is a partial schematic diagram of the front cover;

[0019] Figure 4 is a schematic diagram of the compressor cover;

[0020] Figure 5 is a schematic diagram of the circuit board.

[0021] In the figure: rear cover 1, upper limit frame 1.1, lower limit frame 1.2, limit plate 1.3, slot 1.4, front cover 2, limit rib plate 2.1, first limit groove 2.2, compressor cover 3, second limit groove 3.1, limit post 3.2, compressor 4, compressor chamber 5, circuit board 6, card slot 6.1. Specific implementation mode

[0022] The present utility model will be further described in detail below with reference to the accompanying drawings.

[0023] See Figures 1 - 5 , a fixing structure for an oxygen generator circuit board. The housing of the oxygen generator includes a rear cover 1 and a front cover 2. A compressor cover 3 is further arranged between the rear cover 1 and the front cover 2. A compressor chamber 5 for installing a compressor 4 is formed between the compressor cover 3 and the rear cover 1, so that the compressor 4 operates in a relatively independent space to reduce noise.

[0024] An upper limit frame 1.1 and a lower limit frame 1.2 are arranged on the rear cover 1. The upper rear corner of the circuit board 6 is limited within the upper limit frame 1.1, and the lower rear corner of the circuit board is limited within the lower limit frame 1.2; preferably, the upper limit frame 1.1 includes a limit plate 1.3 above and a slot 1.4 below; the lower limit frame 1.2 includes a limit plate 1.3 below and a slot 1.4 above. The limit plate 1.3 can limit the movement limit of the circuit board 6 in the up and down directions, and the slot 1.4 can limit the left and right movement of the circuit board 6.

[0025] A limit rib plate 2.1 is arranged on the front cover 2. The limit rib plate 2.1 is arranged horizontally. The limit rib plate 2.1 has a first limit groove 2.2. The front edge of the circuit board 6 is limited within the first limit groove 2.2. Preferably, a card slot 6.1 is arranged at the front edge of the circuit board 6. The card slot 6.1 is arranged corresponding to the first limit groove 2.2. When the circuit board 6 is in the installed state, the card slot 6.1 and the first limit groove 2.2 are engaged with each other. The circuit board 6 is arranged approximately vertically, while the limit rib plate 2.1 on the front cover 2 is arranged approximately horizontally. After the card slot 6.1 and the first limit groove 2.2 are engaged with each other, the circuit board 6 can be prevented from moving in the up and down directions and the left and right directions. The front, rear, left, right, up and down directions in this embodiment are all the orientations when the oxygen generator is in use.

[0026] Preferably, a chamfer is arranged at the open end of the card slot 6.1, and a chamfer is also arranged at the open end of the first limit groove 2.2. The arrangement of the chamfer makes the open ends of the card slot 6.1 and the first limit groove 2.2 both in a V shape, which is beneficial to guiding the engagement of the card slot 6.1 and the first limit groove 2.2 when installing the front cover 2 and avoiding mutual interference.

[0027] The compressor cover 3 is provided with a second limiting groove 3.1, and the front lower corner of the circuit board 6 is defined within the second limiting groove 3.1. Preferably, the compressor cover 3 is provided with a limiting post 3.2, and the second limiting groove 3.1 is arranged on the limiting post 3.2. The second limiting groove 3.1 can not only limit the left - right movement of the circuit board 6, but also define the extreme positions of the circuit board 6 moving downward and forward.

[0028] The method for installing the circuit board in this embodiment is as follows: First, insert the rear end of the circuit board 6 into the upper limiting frame 1.1 and the lower limiting frame 1.2 on the rear cover 1. When subsequently assembling the compressor cover 3, insert the front end of the circuit board 6 into the second limiting groove 3.1. At this time, the front end of the circuit board 6 can still move upward. The compressor cover 3 and the rear cover 1 are used to initially position the circuit board 6. Finally, when installing the front cover 2, the card slot 6.1 of the circuit board 6 and the first limiting groove 2.2 are engaged with each other, so that the circuit board 6 is completely fixed in the oxygen generator. The installation and fixation of the circuit board in this embodiment are divided into two steps. First, the compressor cover 3 is used to initially position the circuit board 6, and then the front cover 2 is used to accurately position the circuit board 6. This installation structure not only reduces the difficulty of fixing the circuit board, but also is not easy to damage the circuit board.

[0029] When the circuit board 6 is in the installed state, the upper limiting frame 1.1, the lower limiting frame 1.2, the first limiting groove 2.2, and the second limiting groove 3.1 all limit the left - right movement of the circuit board 6. After the card slot 6.1 of the circuit board 6 and the first limiting groove 2.2 are engaged with each other, it can prevent the circuit board 6 from moving in the up - down direction and the left - right direction. The first limiting groove 2.2, the upper limiting frame 1.1, and the lower limiting frame 1.2 together define the positioning of the circuit board 6 in the front - rear direction.

[0030] The embodiments of the present utility model have been described above in conjunction with the accompanying drawings. Without conflict, the embodiments and the features in the embodiments of the present utility model can be combined with each other. The present utility model is not limited to the above - mentioned specific embodiments. The above - mentioned specific embodiments are merely illustrative rather than restrictive. Under the inspiration of the present utility model, those of ordinary skill in the art can also make many forms without departing from the purpose and the scope protected by the claims of the present utility model. All of these fall within the protection scope of the present utility model.

Claims

1. A circuit board fixing structure for an oxygen concentrator, wherein the housing of the oxygen concentrator comprises a front cover (2) and a rear cover (1), and a compressor cover (3) is further arranged between the front cover (2) and the rear cover (1), characterized in that: An upper limit frame (1.1) and a lower limit frame (1.2) are provided on the rear cover (1); the upper rear corner of the circuit board (6) is limited within the upper limit frame (1.1), and the lower rear corner of the circuit board (6) is limited within the lower limit frame (1.2); A limiting rib plate (2.1) is provided on the front cover (2), the limiting rib plate (2.1) is arranged horizontally, the limiting rib plate (2.1) has a first limiting groove (2.2), and the front end edge of the circuit board (6) is limited in the first limiting groove (2.2); The compressor cover (3) is provided with a second limiting groove (3.1), and the front lower corner of the circuit board (6) is limited in the second limiting groove (3.1).

2. The fixing structure of an oxygen concentrator circuit board (6) according to claim 1, characterized in that: A card slot (6.1) is provided at the front end edge of the circuit board (6), the card slot (6.1) being provided corresponding to the first limiting groove (2.2), and when the circuit board (6) is in an installed state, the card slot (6.1) and the first limiting groove (2.2) are engaged with each other.

3. The fixing structure of an oxygen concentrator circuit board (6) according to claim 2, characterized in that: The opening end of the clamping slot (6.1) is provided with a chamfer, and the opening end of the first limiting groove (2.2) is also provided with a chamfer.

4. The fixing structure of an oxygen concentrator circuit board (6) according to claim 1, characterized in that: The upper limit frame (1.1) comprises an upper limit plate (1.3) and a lower slot (1.4).

5. The fixing structure of an oxygen concentrator circuit board (6) according to claim 1, characterized in that: The lower limiting frame (1.2) comprises a lower limiting plate (1.3) and an upper slot (1.4).

6. The fixing structure of an oxygen concentrator circuit board (6) according to claim 1, characterized in that: A limiting column (3.2) is arranged on the compressor cover (3), and the second limiting groove (3.1) is arranged on the limiting column (3.2).

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