Motor bearing seat filter structure for backward air intake of air compressor

Abstract

The utility model relates to a motor bearing seat filter structure for backward air intake of an air compressor, in particular to a small and medium-sized inflatable air compressor in the field of tools carried on a vehicle or used in do it yourself (DIY). The bearing mainly comprises a bearing body and a cover body, the back face of the bearing body is used for being combined with the rear end of a driving motor of the air compressor in a sealed mode, the front face of the bearing body is provided with a containing space used for containing at least one filtering material, and the bottom face of the containing space is provided with a plurality of exhaust holes communicated with the interior of the driving motor. The cover body is combined with the top of the containing space in a sealing mode, and an air inlet groove is formed in the side edge of the cover body. Therefore, when the air compressor is started, external air can enter the driving motor through the air inlet groove, the filtering material and the exhaust hole so as to filter dust, gravels and water vapor in the air; therefore, dust, gravels and steam in the air are effectively prevented from entering the driving motor and the air compressor to cause damage and corrosion of the driving motor and a cylinder body, the service life of the air compressor is effectively prolonged, and the air compressor can be widely applied to various severe environments.

Description

Technical Field

[0001] The utility model relates to a motor seat filter structure for rearward air intake of an air compressor, particularly a small-sized air compressor in the field of portable or DIY tools, and is mainly a filter directly connected to the bottom (rear) end of a driving motor provided in the air compressor. Background Art

[0002] At present, air compressors or inflators are mainly used in pneumatic tools, car tires or various inflatable devices as a source of gas. Therefore, in the field of DIY, air compressors or inflators have become necessary tools in the workplace or general home repairs, and air compressors or inflators are also the main equipment for inflating car tires.

[0003] The working principle of an air compressor or inflator is that the internal electric motor directly drives the crankshaft to rotate, thereby driving the connecting rod to make the piston reciprocate up and down, so as to change the volume of the cylinder body and compress and discharge the pressurized gas; therefore, during the entire compression stroke, due to the change in cylinder volume, the compressed air passes through a one-way valve mechanism (check valve), and a hose outputs the pressurized gas through the air nozzle, so that the inflated object can be inflated.

[0004] In the prior art, small and medium-sized air compressors or inflators (such as portable inflators or desktop inflators) are provided with air compressor seats at the front and rear positions of the bottom of the air compressor, and the air compressor can be stably placed through the seats. Since the seats provided in the prior art air compressors or inflators have no other functions, and the air compressors are not provided with a filtering device that can filter dust, grit and moisture; therefore, if moisture, grit or dust in the air enters the cylinder body of the air compressor or inflator, it will inevitably cause wear between the piston and the cylinder wall; in addition, if moisture enters the cylinder body of the inflator, it will inevitably cause rust on the piston and the cylinder wall, thereby greatly reducing the service life of the inflator.

[0005] Therefore, how to provide a seat that can filter dust, sand and moisture in the external air while considering manufacturing costs, thereby effectively improving the service life of the entire air compressor or inflator, is the main issue that the present invention aims to solve. Utility Model Content

[0006] The main purpose of the utility model is to provide a motor seat filter structure for rearward air intake of an air compressor, in particular, a rear end portion of a driving motor of an air compressor, wherein the motor seat filter comprises: a seat body and a cover body; the seat body has a back side and a front side, and is sealed and connected to the rear end of the driving motor by the back side of the seat body, and the body is provided with a accommodating space on its front side, the seat body is provided with a plurality of exhaust holes relative to the inner bottom surface of the accommodating space, the plurality of exhaust holes are communicated with the interior of the driving motor, and at least one filter material is arranged in the accommodating space; the cover body is sealed and connected to one end of the accommodating space away from the back side of the seat body, and the cover body is provided with an air intake groove on at least one side thereof, the air intake groove corresponds to the side wall of the accommodating space, so that an air intake gap is formed between the air intake groove and one end of the side wall of the accommodating space away from the back side of the seat body.

[0007] When the air compressor is started, external air will be forcibly sucked in through the motor seat filter, and it has a forced air intake function, that is, the external air enters the drive motor through the air intake groove of the cover body, the filter material and the exhaust hole of the seat body, so as to dissipate heat to the drive motor. At this time, the air entering the drive motor has been filtered, and the compressed air is discharged through the cylinder of the air compressor.

[0008] Furthermore, a plurality of the filter materials are provided, and the plurality of the filter materials are all made of the same material.

[0009] Furthermore, the filter material is provided in plurality, and the plurality of filter materials are respectively made of different materials.

[0010] Furthermore, the seat body is provided with a plurality of locking holes at the outer periphery relative to the accommodating space, and the plurality of locking holes are locked with a preset seat bracket by a plurality of screws.

[0011] Furthermore, the back side of the bearing body is provided with a shaft core positioning groove, and the shaft core positioning groove corresponds to the rotor shaft core provided inside the driving motor, and the end of the rotor shaft core is placed in the shaft core positioning groove.

[0012] The beneficial effect of the utility model is that a motor seat filter is connected to the rear end of the bottom of the driving motor provided in the air compressor, so that the driving motor and the motor seat filter form an integrated structure, so that the motor seat filter can filter dust, sand and water vapor in the air, effectively preventing dust, sand and water vapor in the air from entering the driving motor and the air compressor, causing damage and rust to the driving motor and the cylinder, effectively prolonging the service life of the air compressor, and the air compressor is suitable for various harsh environments (for example: the air compressor can be suitable for use in deserts, beaches, and environments with high humidity (rain forests). BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1: A three-dimensional diagram of the motor support filter structure of the rearward air intake of the air compressor of the utility model;

[0014] Figure 2 : An exploded view of the motor support filter structure of the rearward air intake of the air compressor of the utility model;

[0015] Figure 3 : Appearance diagram of an embodiment of the motor support filter structure of the utility model;

[0016] Figure 4 : A schematic diagram of an embodiment of a cover body of a motor support filter structure of the utility model;

[0017] Figure 5 : A cross-sectional view of the motor support filter structure of the utility model;

[0018] Figure 6 : A schematic diagram of the back side of the main body of the motor support filter structure of the utility model;

[0019] Figure 7 : A front view of the main body of the motor support filter structure of the present invention.

[0020] Description of Reference Numerals

[0021] 1. Motor seat filter;

[0022] 11. Bearing body;

[0023] 110. Accommodation space;

[0024] 111. Exhaust hole;

[0025] 112, shaft core positioning groove;

[0026] 113. Keyhole;

[0027] 12. Cover body;

[0028] 121. Intake groove;

[0029] 2. Air compressor;

[0030] 21. Driving motor;

[0031] 211, rotor shaft core;

[0032] 22. Cylinder assembly;

[0033] 221. Exhaust port;

[0034] 3. Filter material;

[0035] 4. Support bracket;

[0036] 5. Screws. DETAILED DESCRIPTION

[0037] In order to make the technical features, advantages and effects achieved by the present invention more apparent, the present invention is now described in detail with reference to the accompanying drawings. The following embodiments further illustrate the concept of the present invention in detail, but are not intended to limit the scope of the present invention in any way.

[0038] Please refer to Figures 1 to 7 As shown, the utility model discloses a motor seat filter structure for rearward air intake of an air compressor, which is specifically designated for a small-sized air compressor in the field of a portable or DIY tool, and is mainly combined with the rear end of a driving motor 21 of an air compressor 2. The air compressor 2 includes at least one driving motor 21 and at least one cylinder assembly 22. The front end of the driving motor 21 is connected to the cylinder assembly 22. The cylinder assembly 22 is provided with at least one air outlet 221, so that the cylinder assembly 22 is driven by the driving motor 21 to operate, and the compressed air is discharged from the air outlet 221 by the cylinder assembly 22. However, the combination of the gear set, driving connecting rod, piston and other parts preset in the air compressor 2 is not the technical feature of the utility model, and will not be repeated here.

[0039] The motor seat filter 1 disclosed in the present invention comprises a seat body 11 and a cover body 12 .

[0040] The seat body 11 has a back side and a front side, and the back side of the seat body 11 is sealed and connected to the rear end of the driving motor 21. The front side of the seat body 11 is provided with a accommodating space 110, and the seat body 11 is provided with a plurality of exhaust holes 111 relative to the inner bottom surface of the accommodating space 110. The plurality of exhaust holes 111 are communicated with the interior of the driving motor 21. At least one filter material 3 is also provided in the accommodating space 110. When a plurality of filter materials 3 are provided, the plurality of filter materials 3 may be of the same material or of different materials.

[0041] In addition, the seat body 11 is further provided with a plurality of locking holes 113 relative to the outer periphery of the accommodating space 110. The plurality of locking holes 113 are used to be locked with a preset seat bracket 4 through a plurality of screws 5 to form a seat bracket for stably placing the air compressor.

[0042] The cover 12 is sealed and combined with the top of the accommodating space 110 of the support body 11, that is, the cover 12 is sealed and combined with the end of the accommodating space 110 away from the back of the support body, and the cover 12 is provided with an air inlet groove 121 (such as Figure 4 As shown, the air inlet groove 121 corresponds to the end of the side wall of the accommodating space 110 away from the back of the seat body, so that an air inlet gap (as shown) is formed between the air inlet groove 121 and the top of the side wall of the accommodating space 110 Figure 5As shown), external air can enter the accommodating space 110 from the air inlet groove 121.

[0043] The back side of the support body 11 is further provided with a shaft core positioning groove 112 , which corresponds to the rotor shaft core 211 provided inside the driving motor 21 , so that the end of the rotor shaft core 211 can be placed in the shaft core positioning groove 112 to ensure that the rotor shaft core 211 can rotate stably.

[0044] In summary, when the air compressor 2 is started (i.e., when the drive motor 21 is started), the external air will be forcibly sucked into the accommodating space 110 from the air inlet groove 121, and then the air will pass through more than one filter material 3 to filter the air, and finally enter the drive motor 21 through the multiple exhaust holes 111. At this time, the air inside the drive motor 21 has been filtered and the air can dissipate heat for the motor at the same time; the filtered air inside the drive motor 21 is then transported out of the cylinder assembly 22 through the air outlet 221 as pressurized air; in this way, the filter material 3 set in the seat body 11 can effectively filter dust, gravel and moisture in the air, and prevent dust, gravel and moisture in the air from entering the drive motor 21 and cylinder assembly 22 of the air compressor 2, causing wear, damage and rust to the drive motor 21 and cylinder assembly 22.

[0045] Therefore, the main technical feature of the utility model is that a motor seat filter 1 is connected to the bottom (rear) end of the driving motor 21 provided in the air compressor 2, so that the driving motor 21 and the motor seat filter 1 form an integrated structure, and the dust, grit and moisture in the air can be effectively filtered through the motor seat filter 1, and the dust, grit and moisture in the air can be effectively prevented from entering the driving motor 21 and the cylinder assembly 22 of the air compressor 2, causing damage and rust to the driving motor 21 and the cylinder assembly 22, thereby effectively improving the service life and manufacturing cost of the air compressor 2 and adapting to various harsh environments (for example: the air compressor can be suitable for use in beaches, seaside, high humidity environments, etc.).

[0046] The above description is only a preferred embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiments of 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.

Claims

1. A motor seat filter structure for rearward air intake of an air compressor, combined with the rear end of a driving motor of an air compressor, characterized in that: The motor mount filter includes: A support body having a back surface and a front surface, wherein the back surface of the support body is sealed and coupled to the rear end of the drive motor, and the front surface of the support body is provided with a receiving space, and the support body is provided with a plurality of exhaust holes relative to the bottom surface of the receiving space, wherein the plurality of exhaust holes are communicated with the interior of the drive motor, and at least one filter material is provided in the receiving space; A cover body is sealed and combined with an end of the accommodating space away from the back of the seat body. The cover body is provided with an air intake groove on at least one side thereof. The top of the air intake gap is formed between the air intake groove and the side wall of the accommodating space.

2. The motor seat filter structure for rearward air intake of an air compressor according to claim 1, characterized in that: The filter materials are provided in plurality, and the plurality of filter materials are all made of the same material.

3. The motor seat filter structure for rearward air intake of an air compressor according to claim 1, characterized in that: The filter materials are provided in plurality, and the plurality of filter materials are respectively made of different materials.

4. The motor seat filter structure for rearward air intake of an air compressor according to claim 1, characterized in that: The seat body is further provided with a plurality of locking holes at the outer periphery of the accommodating space, and the plurality of locking holes are locked with a preset seat bracket through a plurality of screws.

5. The motor seat filter structure for rearward air intake of an air compressor according to claim 1, characterized in that: The back of the support body is also provided with a shaft core positioning groove, and the shaft core positioning groove corresponds to the rotor shaft core provided inside the driving motor, and the end of the rotor shaft core is placed in the shaft core positioning groove.

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