TWM644282U - Dual motor driven air pump mechanical assembly - Google Patents

Abstract

A double-motor-driven air pump movement, which includes a base, a cylinder, two motors and a transmission wheel set, the cylinder is installed on a fixed plate on one side of the base, the piston rod of the cylinder extends to the accommodation space of the base, and the two The motor is arranged on the connecting plate of the base, and the transmission wheel assembly is arranged in the accommodation space of the base. The transmission wheel assembly includes a relatively large driven gear and a relatively small two main gears, and the two main gears are respectively connected to the driving parts of the two electric motors. The two motors can respectively drive the two main gears to jointly drive the driven gear to drive the piston rod to reciprocate, so that the air pump can use a general-purpose small motor, and the two motors can generate doubled Output power to achieve high output power and high inflation speed performance, and at the same time, the cost can be controlled at a low level, so as to satisfy consumers to inflate large-volume, high-pressure tires and other inflatable objects.

Description

Dual motor driven air pump movement

The present invention relates to an electric air pump, in particular to a double-motor-driven air pump movement.

An air pump is a product used to inflate tires and other inflatable objects of motor vehicles. There are two types of common air pumps: manual and electric. Among them, the electric air pump is labor-saving and has good inflation efficiency, and is chosen by most motor vehicle drivers.

The structure of the above-mentioned electric air pump, the air pump core is mainly installed on the base with a cylinder driven by an electric motor. Most of the existing electric air pumps adopt a single motor-driven electric air pump. Based on cost considerations , generally use the type RS380, 390, 540 or 550 motor, the aforementioned RS380, 390, 540 or 550 motor is an automatic motor product with low cost.

The air pump movement of general electric air pump products adopts the mechanism of a single motor drive machine. Based on the portability and storage, and most motor vehicles are general type RVs, etc., the existing electric air pumps use models RS380 and 390. The output power of , 540 or 550 motors is relatively small, which can indeed meet the needs of use.

With the improvement of people's living standards and economic capabilities, some people like to drive off-road vehicles for outdoor activities. However, for four-wheel drive off-road motor vehicles, they often need to respond to different environments and road conditions when driving outdoors. Waiting to adjust the tire pressure of its lost tire, therefore, it is often necessary to inflate the tire with the help of an electric air pump. Generally speaking, compared with general motor vehicle tires, off-road machines The tires of motor vehicles are usually large in size, and the requirements for the inflation pressure of the tires are relatively high. For such large-volume, high-pressure tires and other inflatable objects, the existing single-motor-driven air pump movement is limited by the output power of the motor, and it is difficult to meet the special inflation requirements. Perhaps, some people consider switching to a motor with a larger output power in order to meet the needs of high output power and high inflation speed. However, the motor that can meet the requirements of high output power and high inflation speed is not a common motor in the industry. The cost of switching to a motor with high output power is several times higher than the cost of choosing a general-purpose motor, which is not conducive to The product competitiveness of manufacturing electric air pumps that meet special inflation needs, therefore, how to balance performance and economy is an important issue for the research and development of electric air pumps.

The purpose of this model is to provide a dual-motor-driven air pump core to solve the problem that the existing single-electric drive air pump core cannot meet the needs of high output power and high inflation speed.

In order to achieve the above-mentioned purpose, the dual-motor-driven air pump core system proposed by the present invention includes: a base, which includes a set of joint plates and a fixed plate formed on one side of the joint plate, the fixed plate and There is an accommodating space between the connecting plates; a cylinder is installed on the base, and the cylinder includes a cylinder body, a cylinder head with a check valve and a piston rod, and the cylinder body is connected by the cylinder The cover is installed on the fixing plate, the piston rod is arranged on the cylinder body and extends into the accommodating space through the fixing plate; two motors are installed on the assembly plate of the base, each of the The motors each have a drive shaft, and the drive shaft extends into the accommodation space; and a transmission wheel set is installed in the accommodation space of the base, and the transmission wheel set includes a driven gear and two The main gear, the diameter of the two main gears is smaller than the diameter of the driven gear, and the two main gears are respectively Engaged with the driven gear, the two motors can separately drive the two main gears to jointly drive the driven gear to drive the piston rod to reciprocate.

Based on the overall structure of the dual-motor-driven air pump movement, it utilizes two motors with transmission wheels to jointly drive the reciprocating motion of the piston rod of the cylinder, so that it can choose a general-purpose small motor, and the two motors can generate The output power is doubled to achieve the performance of high output power and high inflation speed, and at the same time, the cost can be controlled at a low level, so as to satisfy consumers to inflate large-volume, high-pressure tires and other inflatable objects. This new type of dual-motor drive The air pump core can also be applied to the inflation purposes of general tires.

Furthermore, the core of the novel dual-motor-driven air pump is also constructed by combining the dual motors, the special space configuration between the transmission wheel set and the piston rod, among which, the number of teeth and the modulus of the two main gears of the transmission wheel set are utilized. The numbers are the same, and the two main gears are respectively driven by the two motors to drive the driven gear with a large size in the center to rotate, and then the driven gear drives the piston rod of the cylinder to reciprocate to perform the inflation action, so that the double motors The driven air pump movement can indeed inflate objects to be inflated with large-volume, high-compression gas with two general-purpose small motors.

In addition, when the piston rod is driven to move forward to compress the air, due to the reverse thrust of the air pressure in the cylinder, the reaction force will be transmitted to the eccentric shaft of the driven gear through the piston rod, which may cause the The moving gear is tilted backwards. To overcome the above-mentioned technical problems, the core of the new double-motor-driven air pump further utilizes the two motors and the main gear connected to them to be arranged in parallel along the direction of movement of the piston rod of the cylinder (that is, the X-axis direction). The two motors jointly drive the driven gear through the main gear along the moving direction of the piston rod to drive the piston rod to reciprocate, so that the force on the driven gear that drives the piston rod to reciprocate can be balanced, and it is not easy to be skewed. Improve the smoothness of cylinder movement, thereby reducing the load and working current of the air pump when it is working, and prolonging the service life of the air pump.

The core of the novel dual-motor-driven air pump can further utilize two side walls formed between the fixing plate of the base and the assembly plate, and the two side walls are located on opposite sides of the Y-axis of the accommodating space. The side is used to strengthen the strength of the base, so that the base can also be made of plastic, and the strength of the base can be maximized by the two side walls.

10: base

100:Accommodating space

11: Assembly board

111: pivot hole

112: perforation

113: perforation

114: cooling hole

12: Fixed plate

121: Through hole

13: side wall

14:Positioning boss

20: Cylinder

21: Cylinder

211: piston chamber

212: End plate part

213: valve hole

22: cylinder head

221: cover body

2211: socket space

222: End cover

2221: outlet channel

2222: Outlet end

223: check valve

23: piston rod

30A: motor

31A: drive shaft

32A: Fan impeller

30B: Motor

31B: drive shaft

32B: Fan impeller

40: Transmission wheel set

41: driven gear

411:pivot

412: Eccentric shaft

42A: Main gear

42B: Main gear

Fig. 1 is a three-dimensional schematic view of one embodiment of the core of the new dual-motor-driven air pump.

Fig. 2 is another perspective schematic view of the embodiment of the dual-motor-driven air pump movement shown in Fig. 1 .

FIG. 3 is a three-dimensional exploded schematic view of the embodiment of the dual-motor-driven air pump movement shown in FIG. 1 and FIG. 2 .

FIG. 4 is a top plan view of the embodiment of the dual-motor-driven air pump movement shown in FIGS. 1 and 2 .

Fig. 5 is a schematic side view sectional view of the embodiment of the dual-motor-driven air pump movement shown in Fig. 1 and Fig. 2 .

As shown in FIG. 1 and FIG. 2 , it discloses an embodiment of the new dual-motor-driven air pump core. As can be seen from the drawings, the dual-motor-driven air pump core includes a base 10 , a cylinder 20 , two motors 30A, 30B and a transmission wheel set 40 .

As shown in Figures 1 to 5, the base 10 has an X-axis, a Y-axis and a Z-axis that are orthogonal to each other, the base 10 includes a set of connecting plates 11 and a fixing plate 12, the The fixing plate 12 is formed on one side of the assembly plate 11 in the X-axis direction, and there is an accommodating space 100 between the fixing plate 12 and the assembly plate 11 .

The assembly plate 11 is provided with a pivot hole 111 and two through holes 112, 113 which are connected to the accommodation space 100 along the Z axis. space A through hole 121 of 100, in this embodiment, the two through holes 112, 113 are located on both sides of the pivot hole 111 in the X-axis.

As shown in Figures 1 to 3, in this embodiment, the base 10 can further form two side walls 13 between the fixing plate 12 and the assembly plate 11, and the two side walls 13 are located at the Y of the accommodating space 100 The opposite sides in the axial direction are used to strengthen the strength of the base 10, so that the base 10 can be made of plastic materials to form parts.

In addition, the assembly board 11 can further be provided with a plurality of heat dissipation holes 114 , and the heat dissipation performance of the base 10 can be improved through the plurality of heat dissipation holes 114 . One or more positioning protrusions 14 can be arranged on the opposite sides of the assembly plate 11 in the Y-axis, so that when assembled in a housing, the positioning protrusions 14 can be used to assist positioning and be stably installed in the housing.

As shown in Figures 1 to 5, the cylinder 20 is installed on the base 10, the cylinder 20 includes a cylinder body 21, a cylinder head 22 and a piston rod 23, the cylinder body 21 is mounted on the fixed plate 12, the cylinder 21 has a piston chamber 211, and the piston chamber 211 forms an opening on one side of the X-axis of the cylinder 21, and the opening communicates with the through hole 121 correspondingly, and the cylinder 21 is on the side of the opening. The other side has an end plate portion 212 with a valve hole 213 therein.

As shown in FIGS. 1 to 3 and 5, the cylinder head 22 is sleeved on the outside of the cylinder body 21 and fixed on the outside of the fixing plate 12 of the base 10. The cylinder head 22 has a cover body 221 and An end cover portion 222 formed at one end of the cover body 221, the cover body 221 has a socket space 2211, and can be sleeved on the outside of the cylinder body 21 and the end cover portion 222 abuts against the end plate of the cylinder body 21 part 212, the end cover part 222 has an air outlet passage 2221 communicating with the valve hole 213, and an air outlet end 2222 communicating with the air outlet passage 2221, and the air outlet passage 2221 is provided with a control valve hole 213 opening and closing The one-way valve 223, the air outlet end 2222 can be externally connected with an air outlet conduit, through which the object to be inflated is connected.

As shown in FIGS. 1 to 3 and 5, the piston rod 23 is installed in the piston chamber 211 of the cylinder body 21 and extends to the accommodating space 100 through the opening and the through hole 121 of the fixing plate 12. The piston rod 23 can be driven to reciprocate along the X-axis in the piston chamber 211 .

As shown in Figures 1 to 5, the two motors 30A, 30B are installed on the assembly plate 11 of the base 10, each of the motors 30A, 30B has a drive shaft 31A, 31B, and the two motors 30A One end of the drive shafts 31A, 31B of , 30B passes through the assembly plate 11 and extends into the accommodating space 100 respectively. In this embodiment, the two motors 30A, 30B are arranged along the X axis, and the two motors 30A The drive shafts 31A, 31B of , 30B are arranged in parallel along the moving direction of the piston rod 23 of the cylinder 20 . The other end of the drive shaft 31A, 31B of these two electric motors 30A, 30B can also add a fan impeller 32A, 32B, in order to drive the fan impeller 32A, 32B to rotate together when the motor 30A, 30B is running, to provide the motor 30A, 30B cooling airflow.

As shown in Figures 1 to 5, the transmission wheel set 40 is installed in the accommodation space 100 of the base 10 and connected to the two motors 30A, 30B and the piston rod 23, the transmission wheel set 40 includes a driven Gear 41 and two main gears 42A, 42B, the driven gear 41 has a pivot 411, and is pivoted on the assembly plate 11 of the base 10 with the pivot 411, and the driven gear 41 has an eccentric Shaft 412, the eccentric shaft 412 is connected with the piston rod 23, the two main gears 42A, 42B are connected to the drive shafts 31A, 31B of the two motors 30A, 30B respectively, the number of teeth and the mold of the two main gears 42A, 42B The numbers are all the same, and the diameters of the two main gears 42A, 42B are smaller than the diameter of the driven gear 41, the two main gears 42A, 42B are respectively meshed with the driven gear 41, and the two motors 30A, 30B are driven through the two main gears. The gears 42A, 42B jointly drive the driven gear 41 to drive the piston rod 23 to reciprocate. The moving direction of the piston rod 23 of the air cylinder 20 (ie, the X-axis direction) is arranged on both sides of the driven gear 41 in parallel.

As shown in Figures 1 to 5, the new dual-motor-driven air pump core is suitable for the inflation of general tires and other inflatable objects, and is more suitable for large volume and high pressure. Inflating applications such as tires are required, wherein the dual-motor-driven air pump movement uses two electric motors 30A, 30B with the drive wheel set 40 to jointly drive the reciprocating motion of the piston rod 23 of the cylinder 20, when the two electric motors 30A, 30B are energized When running at the same time, the two main gears 42A, 42B are respectively driven to rotate in the same direction, and then the two main gears 42A, 42B jointly drive the driven gear 41 to rotate, and the driven gear 41 drives the piston rod 23 to move back and forth in the cylinder body 21. Realize the output of compressed air to inflatable objects such as tires for inflation.

The two motors 30A and 30B of the new dual-motor-driven air pump core can use general-purpose small motors 30A and 30B, and the output power generated by the two motors 30A and 30B can be multiplied to achieve large output power and high inflation speed. Excellent performance, and at the same time, the cost can be controlled at a low level, so as to satisfy consumers to inflate large-volume, high-pressure tires and other inflatable objects.

When the piston rod 23 is driven to move forward along the X axis to compress the air, due to the reaction force of the air pressure in the cylinder 21, the reaction force will be transmitted to the eccentric shaft 412 of the driven gear 41 through the piston rod 23 , which may cause the driven gear 41 to tilt backwards. The core system of the new dual-motor-driven air pump further utilizes the two motors 30A, 30B and their connected main gears 42A, 42B to move along the direction of movement of the piston rod 23 of the cylinder 20. (that is, the X-axis direction) are arranged in parallel on both sides of the driven gear 41, and the two motors 30A, 30B jointly drive the driven gear 41 through the two main gears 42A, 42B to drive the piston rod 23 to reciprocate. , can balance the force of the driven gear 41 that drives the piston rod 23 to reciprocate, and is not easy to be skewed, and enhance the smoothness of the movement of the cylinder 20, thereby reducing the load and working current of the air pump when it is working, and prolonging the service life of the air pump .

10: base

100:Accommodating space

11: Assembly board

12: Fixed plate

121: Through hole

13: side wall

14:Positioning boss

20: Cylinder

22: cylinder head

2222: Outlet end

23: piston rod

30A: motor

32A: Fan impeller

30B: Motor

32B: Fan impeller

40: Transmission wheel set

41: driven gear

412: Eccentric shaft

42A: Main gear

Claims (5)

A dual-motor-driven air pump core, which includes: a base, which includes a set of joint plates and a fixed plate formed on one side of the joint plate, with a gap between the fixed plate and the joint plate Accommodating space; a cylinder, which is installed on the base, the cylinder includes a cylinder body, a cylinder head with a check valve and a piston rod, the cylinder body is installed on the fixed plate by the cylinder head , the piston rod is arranged on the cylinder body and extends into the accommodating space through the fixing plate; two electric motors are installed on the connecting plate of the base, each of the electric motors has a drive shaft, and The drive shaft extends into the accommodating space; and a transmission wheel set is installed in the accommodating space of the base, the transmission wheel set includes a driven gear and two main gears, the two main gears The diameter is smaller than that of the driven gear, and the two main gears mesh with the driven gear respectively, and the two motors can respectively drive the two main gears to jointly drive the driven gear to drive the piston rod to reciprocate. The dual-motor-driven air pump movement as described in claim 1, wherein the driven gear has an eccentric shaft, and the piston rod is pivotally connected to the eccentric shaft, and the two main gears are respectively connected to the two motors. The drive shaft, the number of teeth and the module of the two main gears are all the same, and the drive shafts of the two motors are arranged in parallel on both sides of the driven gear along the moving direction of the piston rod of the cylinder. The dual-motor-driven air pump core according to Claim 1, wherein the base forms two side walls between the fixing plate and the assembly plate, and the two side walls are located on opposite sides of the accommodating space. The dual-motor-driven air pump movement as described in any one of Claims 1 to 3, wherein the cylinder body is installed outside the fixed plate, the cylinder body has a piston chamber, and the opening of the piston chamber faces In the accommodating space, the cylinder block has an end plate portion on the other side of the opening, and a valve hole is formed in the end plate portion, the cylinder head is sleeved on the outside of the cylinder block and fixed on the outside of the assembly plate , the cylinder head has a A cover and an end cover formed at one end of the cover, the cover has a socket space, and is sleeved on the outside of the cylinder and the end cover abuts against the end plate of the cylinder, the end cover There is an air outlet channel communicating with the valve hole in the part, and an air outlet end communicating with the air outlet channel. The one-way valve is arranged in the air outlet channel and can control the opening and closing of the valve hole. The piston rod is installed in the cylinder. In the piston chamber of the body and extend to the accommodating space through the fixing plate. The dual-motor-driven air pump core according to any one of Claims 1 to 3, wherein the other ends of the drive shafts of the two motors are respectively equipped with an impeller.

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