Computer cooling fan system
Technical Field
The present disclosure relates to computers, and particularly to a cooling fan system for a computer.
Background
Electronic components of a personal computer are arranged in a computer shell, and a cooling fan system is arranged on the computer to dissipate heat generated by the electronic components. The cooling fan system comprises an air outlet hole formed in the computer shell, a cooling fan is arranged in the air outlet hole, the cooling fan comprises a cooling motor and an air exhaust blade for exhausting air in the computer shell, the cooling motor comprises a motor shell and a power output shaft supported on the motor shell through a bearing, the air exhaust blade is connected to the power output shaft of the cooling motor, and the bearing comprises an inner ring, an outer ring and a rolling body located between the inner ring and the outer ring. When the heat dissipation fan is used, the heat dissipation motor drives the air draft blades to rotate, so that air in the shell of the computer is pumped out to dissipate heat. The bearing in the existing computer cooling fan system needs manual oiling for lubrication or is manufactured by filling lubricating grease in the bearing for lubrication, the manual oiling for the bearing is labor-consuming, and the bearing filled with the lubricating grease can not be supplemented after the lubricating grease is failed, so that the bearing needs to be replaced.
Disclosure of Invention
The invention aims to provide a computer cooling fan system mechanism capable of automatically adding lubricating grease into a bearing, and solves the problem that the bearing in the existing computer cooling fan system needs manual lubricating grease adding, which is laborious.
The technical problem is solved by the following technical scheme: a computer cooling fan system comprises a computer shell, wherein the computer shell is provided with an air outlet, the air outlet is provided with a cooling fan, the cooling fan comprises a cooling motor and an air exhaust blade for exhausting air in the computer shell, the cooling motor comprises a motor shell and a power output shaft supported on the motor shell through a bearing, the air exhaust blade is connected to the power output shaft of the cooling motor, the bearing comprises an inner ring, an outer ring and a rolling body positioned between the inner ring and the outer ring, the motor shell is provided with a grease storage cylinder, a grease storage cylinder part piston positioned in the grease storage cylinder, a cylinder part piston positioned in the cylinder and a cylinder piston driving mechanism for driving the cylinder part piston to reciprocate in the cylinder through the rotation of the power output shaft, the grease storage cylinder part piston divides the grease storage cylinder into a grease storage cavity and a gas storage cavity, the oil storage cavity is communicated with the air cylinder through an air passage, the air passage is provided with a first one-way valve which is opened towards the air storage cavity, and the piston of the air cylinder part is provided with a second one-way valve which is opened towards the interior of the air cylinder. When the fan motor is started in use, the power output shaft drives the piston driving mechanism to drive the piston of the cylinder part to do reciprocating linear motion, when the depth of the piston of the cylinder part inserted into the air cavity is increased, the pressure in the air cavity is increased to open the first one-way valve, and the air in the air cavity is pressed into the air storage cavity to enable the piston of the grease storage cavity to move towards the grease storage cavity, so that the grease in the grease storage cavity is input into the bearing through the grease outlet hole and the grease filling hole of the grease storage cylinder part to realize oil supplementing lubrication on the bearing; when the piston of the air cavity part moves towards the outside of the air cavity, the first one-way valve is closed, and the second one-way valve is opened, so that the cylinder is irregular, and the piston can be input into the air storage cavity again to drive the piston of the grease storage cavity part to move towards the grease storage cavity again when the depth of the piston inserted into the air cavity is increased next time, and grease is input into the bearing again. The automatic lubrication of the bearing is realized.
Preferably, the cylinder piston driving mechanism comprises a driving spring which is positioned in the cylinder and drives the cylinder part piston to move outwards, a driving rod connected to the cylinder part piston, a rotating disc connected to the power output shaft and a plurality of rollers which are rotatably connected to the driving rod on the rotating disc so that the cylinder part piston moves towards the cylinder, the rollers are distributed along the circumferential direction of the rotating disc, and the axis of the rotating disc is parallel to the axis of the rollers. The specific technical scheme of the cylinder piston driving mechanism is provided, and the scheme is convenient for realizing adjustment of grease conveying capacity.
Preferably, the roller is engaged with the driving rod through a circumferential surface. The preparation is convenient.
Preferably, when the roller is staggered with the driving rod, the driving rod is positioned outside a cylinder, the radius of the cylinder is the distance between the center line of the roller and the center line of the turntable, and the radius center line of the cylinder is the center line of the turntable. The roller can reliably drive the driving rod to move along the extending direction of the cylinder so as to avoid being stuck.
Preferably, the outer circumferential surface of the outer ring is provided with an annular oil groove of the bearing portion extending along the circumferential direction of the outer ring, the grease adding hole is formed in the annular oil groove of the bearing portion, and the grease storage cylinder portion outlet hole is aligned with the annular oil groove of the bearing portion to communicate with the grease adding hole. The grease outlet hole of the grease storage cylinder part can be conveniently aligned with the oil filling hole, and convenience in assembly is improved.
Preferably, the power output shaft is provided with a grease outlet channel extending along the axial direction of the power output shaft, the grease outlet channel is provided with an output shaft part grease inlet hole penetrating through the peripheral surface of the power output shaft, the inner ring is provided with a bearing part grease outlet hole communicated with the output shaft part grease inlet hole, the inner ring and the outer ring are hermetically connected together through two oil blocking rings, and the two oil blocking rings are distributed on two sides of the rolling body along the axial direction of the outer ring. When new lubricating grease is injected into the bearing, the lubricating grease in the bearing is discharged into the grease discharging channel through the grease discharging hole of the bearing part and the grease inlet hole of the output shaft part, and finally discharged through the grease discharging channel. The old grease in the bearing can be prevented from flowing out from between the inner and outer rings of the bearing to the inside of the motor.
Preferably, the power output shaft is provided with an annular oil groove of the output shaft extending along the circumferential direction of the power output shaft on the outer circumferential surface thereof, the grease inlet hole of the output shaft is arranged in the annular oil groove of the output shaft, and the grease outlet hole of the bearing part is aligned with the annular oil groove of the output shaft to communicate with the grease inlet hole of the output shaft. The bearing part grease outlet hole and the output shaft part grease inlet hole can be conveniently aligned, and convenience in assembly is improved.
Preferably, the grease outlet channel penetrates through the power output shaft, the power output shaft extends out of the computer shell, a plurality of oil pushing plugs are arranged in the grease outlet channel, the grease inlet holes of the output shaft part are positioned on one side, facing one end of the power output shaft, of all the oil pushing plugs, and each oil pushing plug is connected with a pull rope capable of extending out of the outer end of the power output shaft; between adjacent oil pushing plugs, the guy cable on the oil pushing plug far away from the outer end of the power output shaft is connected with the oil pushing plug close to the power output shaft; and the inhaul cable on the oil pushing plug closest to the outer end of the power output shaft outputs the power output shaft through the grease outlet channel. When the grease filled in the grease outlet channel reaches the outer end of the power output shaft, the guy cable is pulled to pull the grease pushing plug closest to the outer end of the power output shaft out of the power output shaft, the guy cable next to the grease pushing plug at the outer end of the power output shaft outputs the power output shaft, and the grease in the grease outlet channel is discharged when the grease pushing plug is pulled out. When the grease filled in the grease outlet channel reaches the outer end of the power output shaft again, the guy cable is pulled to pull the grease pushing plug closest to the outer end of the power output shaft out of the power output shaft, the guy cable next closest to the grease pushing plug at the outer end of the power output shaft outputs the power output shaft, and the grease in the grease outlet channel is discharged when the grease pushing plug is pulled out. By analogy, when all the oil plugs are pulled out, the computer shell is opened to push the oil plugs from the new assembly in the power output shaft. The centralized and directional discharge of the grease in the grease outlet channel is realized. Thereby avoiding the random discharge of grease to pollute the computer.
Preferably, the oil baffle ring and the inner ring are abutted together, a chamfer surface is arranged between the outer peripheral surface of the oil baffle ring and the side surface of one side of the oil baffle ring, which is far away from the rolling body, a glue storage groove is formed between the chamfer surface and the inner peripheral surface of the outer ring, a bonding ring which is formed by curing glue and extends along the circumferential direction of the glue storage groove is arranged in the glue storage groove, and the oil baffle ring and the outer ring are fixedly connected together in a sealing manner through the bonding ring. The oil baffle ring is good in fixing reliability and convenient to fix.
Preferably, the outer circumferential surface of the inner ring is provided with a sealing groove extending along the circumferential direction of the inner ring, the oil baffle ring is provided with an elastic sealing lip which is completely accommodated in the sealing groove and is in sealing and abutting connection with the side wall of the sealing groove on the side far away from the rolling body, and the oil baffle ring is of a rigid structure. When the inner ring rotates to cause the seal lip to be worn, the seal lip can move towards the side wall of the seal groove under the pressure of the internal grease to perform sealing compensation, so that the sealing state is still maintained. The sealing reliability is good.
The invention has the following advantages: grease can be automatically added into the bearing when the cooling fan works, so that labor is saved when the grease is added; when the cooling fan does not rotate, lubricating grease can not be added, so that the waste of the lubricating grease is avoided.
Drawings
FIG. 1 is a schematic diagram of the present invention.
Fig. 2 is an enlarged cross-sectional view of the heat dissipation motor.
Fig. 3 is a partially enlarged schematic view of a portion a of fig. 2.
Fig. 4 is a partially enlarged schematic view of fig. 3 at B.
Fig. 5 is a schematic view of the piston driving mechanism when the driving rod and the roller are abutted together along the axial projection of the power output shaft.
Fig. 6 is a schematic view of the piston driving mechanism in axial projection along the power output shaft with the driving rod offset from the roller.
In the figure: the computer comprises a computer shell 1, an air outlet 2, a heat dissipation motor 3, an air draft blade 4, a motor shell 5, a bearing 6, a power output shaft 7, a rotor 8, a stator 9, an inner ring 10, an outer ring 11, a rolling body 12, a grease storage cylinder 13, a grease storage cylinder part piston 14, a cylinder 15, a cylinder part piston 16, a grease storage cavity 17, an air storage cavity 18, a bearing part annular oil groove 19, a grease adding hole 20, a grease storage cylinder part grease outlet hole 21, an air passage 22, a first check valve 23, a second check valve 24, a driving spring 25, a driving rod 26, a rotary disc 27, a shaft pin 28, a roller 29, a cylinder 30, a grease outlet passage 32, an output shaft part annular oil groove 33, an output shaft part grease inlet 34, a bearing part grease outlet 35, a grease pushing plug 36, a pull cable 37, a grease pushing plug 38 positioned on the grease pushing plug closest to the outer end of the power output shaft, Oil baffle 39, glue storage groove 40, bonding ring 41, seal groove 42, elastic seal lip 43.
Detailed Description
The invention is further described with reference to the following figures and examples.
Referring to fig. 1, 2, 3, 4 and 5, a computer cooling fan system includes a computer housing 1. The computer shell is provided with an air outlet 2. The air outlet hole is provided with a cooling fan. The heat dissipation fan includes a heat dissipation motor 3 and an air extraction blade 4 that extracts air inside the computer case. The heat dissipation motor comprises a motor housing 5 and a power take-off shaft 7 supported on the motor housing by means of bearings 6. The power output shaft extends out of the computer shell. Both ends of the power output shaft are supported on the motor shell through bearings. The power output shaft is arranged through and fixed on the rotor 8. The rotor is arranged in the stator 9 in a penetrating manner. The stator is fixed with the abutting shell. The air exhaust blade is connected to the power output shaft. The bearing comprises an inner ring 10, an outer ring 11 and rolling bodies 12 located between the inner ring and the outer ring. The motor shell is provided with a grease storage cylinder 13, a grease storage cylinder part piston 14 positioned in the grease storage cylinder, a cylinder 15, a cylinder part piston 16 positioned in the cylinder and a cylinder piston driving mechanism for driving the cylinder part piston to reciprocate in the cylinder through the rotation of a power output shaft. The grease reservoir piston divides the grease reservoir into a grease reservoir chamber 17 and an air reservoir chamber 18. The grease storage cavity stores grease. The outer peripheral surface of the outer ring is provided with a bearing portion annular oil groove 19 extending in the outer ring circumferential direction. The bearing portion annular oil groove is provided with a greasing hole 20 penetrating the outer ring. The grease reservoir chamber is provided with a grease reservoir portion grease outlet aperture 21 aligned with the bearing portion annular oil groove. The air storage cavity is communicated with the air cylinder through an air passage 22. The air passage is provided with a first one-way valve 23 which opens towards the air reservoir. The cylinder part piston is provided with a second one-way valve 24 opening into the cylinder.
The cylinder piston driving mechanism comprises a driving spring 25 which is positioned in the cylinder and drives the cylinder piston to move outwards, a driving rod 26 connected to the cylinder piston, a rotary table 27 connected to the power output shaft and a plurality of rollers 29 which are connected to the rotary table through shaft pins 28 in a rotating mode and drive the driving rod, so that the cylinder piston moves towards the inside of the cylinder. The rollers are distributed along the circumference of the turntable. The axis of the rotary disc is parallel to the axis of the roller. The gyro wheel passes through global and the actuating lever cooperation, and the gyro wheel goes the actuating lever through global promptly. When the rollers are staggered from the drive rods, the drive rods are located outside of the cylinder 30 whose radius is the distance between the centerline of the rollers and the centerline of the turntable, and whose radius centerline is the centerline of the turntable.
The power take-off shaft is provided with a grease outlet passage 32 extending in the axial direction of the power take-off shaft. The grease outlet channel penetrates through two ends of the power output shaft. An output shaft annular oil groove 33 extending in the power output shaft circumferential direction is provided on the power output shaft outer circumferential surface. An output shaft grease inlet hole 34 communicated with the grease outlet channel is formed in the annular oil groove of the output shaft. The inner race is provided with bearing grease holes 35 aligned with the annular oil groove of the output shaft.
A plurality of oil pushing plugs 36 are arranged in the grease outlet channel. The output shaft part grease inlet holes are positioned on one side of all the oil pushing plugs, which faces one end of the power output shaft positioned on the computer shell. Each oil pushing plug is connected with a guy cable 37 which can extend out of the outer end of the power output shaft; between adjacent oil pushing plugs, the guy cable on the oil pushing plug far away from the outer end of the power output shaft is connected with the oil pushing plug close to the power output shaft. The cable 38 on the oil push plug located closest to the outer end of the power output shaft outputs the outer end of the power output shaft (the end located outside the computer case) through the grease outlet passage.
The inner ring and the outer ring are connected together in a sealing way through two oil retaining rings 39. The two oil baffle rings are distributed on two sides of the rolling body along the axial direction of the outer ring. And a chamfer surface is arranged between the outer peripheral surface of the oil baffle ring and the side surface of one side of the oil baffle ring, which is far away from the rolling body, and a glue storage groove 40 is formed between the chamfer surface and the inner peripheral surface of the outer ring. The glue storage tank is internally provided with a bonding ring 41 which is formed by curing glue and extends along the circumferential direction of the glue storage tank. The oil baffle ring and the outer ring are fixedly connected together in a sealing way by the bonding ring. A seal groove 42 extending in the circumferential direction of the inner ring is provided on the outer circumferential surface of the inner ring. The oil baffle ring is provided with an elastic sealing lip 43 which is completely accommodated in the sealing groove and is in sealing and abutting connection with the side wall of the sealing groove far away from one side of the rolling body. The oil baffle ring is a rigid structure.