KR102020834B1 - Rechargeable water pump - Google Patents

Abstract

The present invention relates to a rechargeable water pump comprising a water pump body (100) having a motor installed therein and a pump (200) receiving power from the motor of the water pump body to receive external water and discharge the water to the outside. According to the present invention, the pump (200) has a water inlet (210) formed on one side to receive the external water, has a water outlet (300) formed on the other side to discharge the water received therein to the outside, and a coupling (1) is installed between the motor installed in the water pump body (100) and the pump (200). Accordingly, the present invention provides effects of reducing cost and facilitating manufacturing. Moreover, the coupling is installed between the water pump body and the pump and easily controls straightness, concentricity, and timing to reduce energy consumed for power transmission, thereby providing a remarkable effect of facilitating the power transmission.

Description

Rechargeable Water Pump {Rechargeable Water Pump}

The present invention relates to a rechargeable pump, and more particularly, a rechargeable motor is installed inside the pump body, and a coupling is installed in the motor installed inside the pump body so that power is lost when power is transferred from the pump body to the pump. It relates to a rechargeable pump that is minimized.

According to the prior art, the water pump using the hydraulic power of the registered Patent No. 10-1011001, in the water pump using the hydraulic power configured to pump, including the hydraulic pressure of the powerful water flowing in, and gears connected to each other, the inflow The screw 10 is provided in the screw pipe 11 in which the water outlet 11a is formed at one side and the strainer 11b is installed at the other side so that it may rotate by the water pressure of the strong water which becomes; The shaft of the screw (10) is connected to the outer center portion and is provided with an internal gear (20) installed at one end in the screw tube (11) to be rotated by the rotation of the screw (10); A driven gear 30 which is installed to be rotated on one side of the shaft support 60 is connected to the internal gear 20 by being engaged; The gear 41 of the pump 40, which is installed to rotate in the central portion of the shaft support 60, and whose one end of the shaft is connected to the bearing 21 provided in the inner central portion of the internal gear 20, is driven. Is meshed with the gear 30; The water pump 40 is built in the case 50, one end of which is coupled to each other by one end of the screw pipe 11 and the fastening bolt 70, and the suction pipe 42 of the water pump 40. The water pump using hydraulic power, characterized in that the water storage portion 43 is connected to one end of the) is disclosed.

According to another prior art, the electric pump of Patent No. 10-0837390, the absorption port (1b) is formed to be connected to the center of the pumping chamber (1a) and the discharge port (1c) is connected to the upper portion of the pumping chamber (1a) It is formed and the impeller (1d) is installed inside the pumping chamber (1a) and the pumping unit (1) having a grounding projection (1i) at the bottom of the pumping chamber outer wall and the rotating shaft (2a) of the electric motor (2) in the impeller (1d) In a known electric pump that is connected to rotate the impeller 1d by the force of the electric motor 2, the outer cylinder 4 is covered so that the water storage chamber 3 is formed around the outer circumferential wall 2b of the electric motor 2. The inner end 4a of the outer cylinder 4 and the inner end 2c of the outer circumferential wall 2b to the outer connecting portion 1f and the inner connecting portion 1g respectively formed in the pumping portion 1 outer wall 1e. And the packing (5) (5a) is inserted into the coupling portion and fastened with bolts (6) and communicates with the pumping chamber in the gap formed between the inner and outer connecting portions (1f) (1g) of the outer wall body (1e) of the pumping portion (1). Hole (7 The protection cover (9) outside the power supply unit (8) of the cooling device and the electric motor (2) to allow water to communicate with each other between the reservoir (3) and the pumping chamber (1a) around the electric motor (2). An electric water pump is disclosed in which a packing (11) (11a) is inserted into a sealing portion (9a) coupled to the water storage chamber (3) and fastened with a bolt (10) and a nut (10a).

However, the conventional water pumps as described above are not rechargeable, are expensive to manufacture, are difficult to make due to their complicated structure, and are not provided with couplings to the motors of the pumps. It was difficult to control the energy consumption in power transmission had a lot of disadvantages.

Therefore, the present invention has been made to solve the above problems, the cost is low, easy to manufacture, the coupling is installed between the pumping body and the pump, the coupling is easy to adjust the straightness, concentricity, angle It is to provide a rechargeable water pump easy to power transmission is less energy consumed in power transmission.

The present invention relates to a rechargeable pumping pump, the pumping body 100 is provided with a motor therein,

Receives power from the motor of the pumping body 100 is made of a pump 200 for introducing water to the outside to discharge the water to the outside,

The pump 200 has a water inlet 210 for introducing external water to one side is formed, the water outlet 300 for discharging the water introduced into the pump 200 to the outside is formed, the pumping body The coupling 1 is installed between the motor and the pump 200 installed inside the 100.

Therefore, the present invention is inexpensive, easy to manufacture, the coupling is installed between the pump body and the pump, the coupling is easy to adjust the straightness, concentricity, the degree of angle is less energy consumed in the power transmission power transmission This has an easy and remarkable effect.

1 is a photograph of the present invention rechargeable pump
Figure 2 is an internal photo of the coupling installed in the present invention rechargeable pump
3 is an external photograph of a coupling installed in the present invention rechargeable pump
Figure 4 is an exploded photo of the coupling installed in the present invention rechargeable pump
5 is a cover photograph of the coupling installed in the present invention rechargeable pump
Figure 6 is a photograph of a circular plate of the coupling installed in the present invention rechargeable pump
7 is a gear picture of the coupling installed in the present invention rechargeable pump
8 is a gear tooth picture of the gear of the coupling installed in the present invention rechargeable pump
Figure 9 is a press photograph for manufacturing a rotating plate of the present invention coupling cover
10 is a photograph showing a state in which a snap ring insertion groove is formed in a power transmission shaft coupled to the rotating plate of the present invention;
11 is a photograph showing a state in which the snap ring is coupled to the power transmission shaft of the present invention cover
12 is a schematic view showing a step of manufacturing a rotating plate of the present invention cover

The present invention relates to a rechargeable pumping pump, the pumping body 100 is provided with a motor therein,

Receives power from the motor of the pumping body 100 is made of a pump 200 for introducing water to the outside to discharge the water to the outside,

The pump 200 has a water inlet 210 for introducing external water to one side is formed, the water outlet 300 for discharging the water introduced into the pump 200 to the outside is formed, the pumping body The coupling 1 is installed between the motor and the pump 200 installed inside the 100.

In addition, the coupling 1 and the gear 10 is coupled to the rotating shaft of the motor,

A circular plate 20 connected to the gear 10 and receiving power of the gear 10;

The circular plate 20 is made of a cover 30 coupled to the inside,

The cover 30 is coupled to the housing of the motor, the outer side of the cover 30 is connected to the circular plate 20 inside the cover 30 is a power transmission shaft 40 for transmitting power to the mechanical device is formed There, the power transmission shaft 40 is characterized in that for transmitting power to the connection bar.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

Figure 1 is a picture of the present invention, the rechargeable pumping pump, Figure 2 is an internal picture of the coupling installed in the rechargeable pumping machine, Figure 3 is an external picture of the coupling installed in the rechargeable pumping machine, Figure 4 is a rechargeable pumping machine 5 is an exploded picture of the coupling to be installed, Figure 5 is a cover picture of the coupling installed in the rechargeable pumping machine of the present invention, Figure 6 is a circular plate picture of the coupling is installed in the rechargeable pumping machine of the present invention, Figure 7 is installed in the rechargeable pumping machine of the present invention Gear picture of the coupling, Figure 8 is a gear tooth picture of the gear of the coupling installed in the rechargeable water pump of the present invention, Figure 9 is a press picture for manufacturing a rotating plate of the coupling cover of the present invention, Figure 10 is a rotating plate of the present invention Photo shows a state in which the snap ring insertion groove is formed in the coupled power transmission shaft, Figure 11 shows a state in which the snap ring is coupled to the power transmission shaft of the cover of the present invention. Gene, Figure 12 is a schematic diagram showing the step of producing a rotating plate of the cover of the present invention.

The present invention relates to a rechargeable water pump, a rechargeable motor is installed inside the pump body, and a coupling is installed in the motor installed inside the pump body so that the power is minimized when power is transferred from the pump body to the pump. It is about a water pump.

Water pumps are generally used for irrigation or drainage, and are called agricultural pumps. The water pumps are divided into simple pumps, reciprocating pumps, rotary pumps (rotary pumps), and special pumps. Centrifugal pumps are widely used for agricultural pumps, and are composed of impeller, casing, and grand packing.

The present invention is a rechargeable water pump is composed of a pump main body 100, a motor is installed therein, and a pump 200 for receiving power from the motor of the pump main body 100 to introduce external water to discharge the water to the outside.

The pump 200 has a water inlet 210 for introducing external water to one side is formed, the water outlet 300 for discharging the water introduced into the pump 200 to the outside is formed, the pumping body The coupling 1 is installed between the motor 200 and the pump 200 installed inside the 100.

The exterior of the pump body is provided with an external battery for supplying power to the rechargeable motor installed inside the pump body.

The coupling is coupled to the rotating shaft of the motor to transmit power to the machine, the gear 10 is coupled to the rotating shaft of the motor, the circular plate connected to the gear 10 receives the power of the gear 10 20 and the circular plate 20 is formed of a cover 30 coupled therein.

The cover 30 is coupled to the housing of the motor, the outer side of the cover 30 is connected to the circular plate 20 inside the cover 30 is a power transmission shaft 40 for transmitting power to the mechanical device is formed have.

That is, the cover 30 is coupled to the center of the cover body 31, the rotating plate 32 rotatably coupled to the inside of the cover body 31, the rotating plate 32 and the rotating plate ( 32 is rotated together with the power transmission shaft 40 is formed to protrude to the outside through the cover body 31.

The power transmission shaft is coupled to penetrate the rotating plate and the cover body from the rear to the front, the power transmission shaft is manufactured by punching, the rear of the power transmission shaft is formed in a larger diameter than the front.

The rotating plate is formed by pressing, but the rotating plate has a cylindrical shape when the shape is processed by a press, and the upper part is opened. After the shape is processed, a half moon-shaped hole is processed to pass through the front and rear of the rotating plate.

And the coupling method of the cover, the rotating plate power transmission shaft is coupled to the rotating plate to the rear of the cover, the power transmission shaft passes through the cover and the rotating plate and the rear is coupled to the rotating plate by welding.

The gear 10 includes a pipe-shaped fastening body 11 coupled to a rotating shaft of the motor, and a plurality of gear teeth 12 protruding from the outer periphery of the end of the fastening body 11.

”형상으로 형성된다.Gear teeth formed on the fastening body is preferably formed six spaced apart at a predetermined interval, the cross section is "

”Shaped.

When the gear teeth are six, the gear teeth are in contact with the circular plate, so that it is easy to transmit power.

If the gear teeth formed on the fastening body is less than six, when the gear teeth formed on the fastening body transmit power to the circular plate, the contact portion decreases, causing a lot of power loss.

When the number of gear teeth formed on the fastening body exceeds six, the size of the gear teeth formed on the fastening body decreases and a phenomenon occurs.

And between the gear teeth formed in the fastening body and the other gear teeth in close proximity to the round is formed is formed in 10 ~ 25 °.

And the end of the gear teeth round is formed of 2 ~ 9 °.

Thus, when the gear teeth of the gear transfers power to the circular plate, friction due to the pinch of the gear and the circular plate does not occur, noise and vibration are also reduced, and it is possible to prevent overload during power transmission.

In addition, the gear has a bolt hole 13 formed on the outer periphery of the fastening body, and when coupled to the rotating shaft of the motor, first insert the fastening body of the gear into the rotating shaft, and then insert the bolt into the bolt hole formed in the fastening body to rotate the shaft To engage the gear.

The gear is to process the material of the cylindrical metal material, first divide the cylindrical material into the upper, the lower end is processed so that the diameter of the lower end is smaller than the diameter of the upper end.

And the upper end of the material is processed to form a gear tooth to form a hexagonal star.

And the insertion hole is processed so that the rotating shaft of the motor is inserted through the upper and lower portions of the material.

A hole is formed in the outer periphery of the lower end of the material, and a screw surface is formed in the inner diameter of the hole to produce a gear.

The circular plate 20 to which the gear 10 is coupled has a coupling hole 21 formed corresponding to the shape of the gear teeth 12 formed at the outer circumference of the gear 10 at the center thereof.

The circular plate has a disk shape, a plurality of protruding jaw 22 is formed radially at the end, the protruding jaw is coupled to a rotating plate coupled to the cover. The rotating plate is formed with a coupling hole so that a plurality of protruding jaws formed in the circular plate can be inserted and coupled.

Thus, when the gear is coupled to the rotary shaft of the motor to rotate together with the rotary shaft, the gear rotates the circular plate, the circular plate is coupled to the rotary plate of the motor, so that the rotary plate also rotates together.

And as the rotating plate is rotated, the power transmission shaft coupled to the rotating plate is also rotated.

”형상으로 형성된다.In addition, the coupling hole formed in the circular plate is formed in a hexagonal star shape, the cross section is "

”Shaped.

In addition, the gear tooth portion is inserted into the coupling hole of the circular plate to transfer power, the gear teeth of the gear and the coupling hole of the circular plate is formed between the clearance space between each other 0.5 ~ 2mm interval.

Therefore, when the gear rotated by the rotating shaft of the motor is rotated by the motor, even if the vibration caused by the vibration of the motor and the external shock transmitted from the working part occurs, the power transmitted due to the clearance space between the gear teeth and the circular plate is lost. Can be prevented.

And the gear teeth are formed to have a certain thickness in the longitudinal direction of the fastening body of the gear, the circular plate is formed with a thickness of 1/2 ~ 1/5 than the thickness of the gear teeth.

Thus, even if the length of the rotation shaft of the motor is different, the thickness of the gear teeth of the gear coupled to the rotation shaft is thicker than the thickness of the circular plate to be able to easily transfer power between each other.

Therefore, when the gear transmits power to the circular plate it is possible to adjust the degree of straightness, concentricity, the angle of attack.

In addition, the gear is made of a metal material, the circular plate is made of a metal material or synthetic resin material. When the circular plate is made of a metal material, it is used where demanding durability and instantaneous force, and when the circular plate is made of a submerged resin material, it minimizes the load of the motor and increases the efficiency of power transmission. Used for.

The circular plate is formed by forming a coupling hole in the center of the circular plate with a press, and the projection jaw is formed on both sides when the circular plate is processed by the press, the projection jaw is bent 90 ° using a hand tool by the operator .

Meanwhile, as another embodiment of the cover of the present invention, a method of manufacturing the cover is as follows.

First, firstly, the rotating plate is manufactured, and the first step of manufacturing the rotating plate includes a material having a circular plate shape.

The second step is to process the material of the circular plate by a press to form a rotating plate semi-finished product. The rotating plate semi-finished product shaped by the press 400 is formed in a cylindrical shape with an upper opening, and a lower surface of the rotating plate semi-finished product is formed with a circular hole.

The press 400 is composed of a lower die 410 and an upper die 420, the lower die 410 has a cylindrical seating groove 411 is formed on the upper surface, the interior of the seating groove 411 The lower surface of the circular circular hole 412 is formed.

The upper die 420 has a cylindrical first pressing protrusion 421 formed on a lower surface thereof, and a cylindrical second pressing protrusion formed on a lower surface of the first pressing protrusion 421.

The diameter of the mounting groove formed in the lower die is larger than the first pressing projection formed in the upper die, the first pressing projection is inserted into the mounting groove. When the first pressing protrusion is inserted into the mounting groove, the second pressing protrusion formed on the lower surface of the first pressing protrusion is inserted into the circular hole formed on the inner bottom of the mounting groove, and the second pressing protrusion and the circular hole have a diameter. Is formed identically. Therefore, the rotating plate formed by the press is formed in a cylindrical shape with an upper surface opened, but a circular hole is formed inside.

Step 3 forms a pair of circular arc-shaped circular holes around the circular hole of the semi-finished rotating plate to form a finished rotating plate. An arc hole formed in the rotating plate semifinished product is formed by a punching machine.

And secondly, the cover body is molded into a mold.

And thirdly, the power transmission shaft is molded into a mold.

The power transmission shaft is formed in a cylindrical shape, the rear diameter is formed larger than the front diameter. A screw surface is formed at the front of the power transmission shaft, and a snap ring insertion groove 41 is formed at the outer circumference of the power transmission shaft.

And fourthly, the cover body, the rotation plate and the power transmission shaft are coupled, the coupling method is as follows.

A ring-shaped bearing is installed inside the cover body, and the rotating plate is placed at the rear of the bearing, and the open part of the rotating plate is placed to face the outside while being coupled to the cover body.

And the bearing is fixedly coupled to the cover body in a state coupled to the power transmission shaft.

And while forcibly coupling the power transmission shaft through the cover body, the bearing and the rotating plate, it is coupled by a punching machine.

And it is coupled by welding so that the rotating plate and the power transmission shaft are not separated.

After that, a snap ring 42 is coupled to the snap ring insertion groove 41 formed on the outer circumference of the power transmission shaft 40, and the snap ring insertion groove formed on the power transmission shaft is formed in front of the bearing. After the power transmission shaft passes through the bearing, the snap ring is coupled to the snap ring insertion groove. Thus, the bearing coupled to the power transmission shaft is not separated by the snap ring.

Therefore, the rotating plate and the power transmission shaft are rotatably installed while being coupled to the cover body.

On the other hand, as another embodiment of the circular plate, the circular plate is formed with a coupling hole in the shape of a hexagonal star, each side of the coupling hole is formed with arc-shaped arc projections.

The circular protrusion formed on the circular plate is inserted into and coupled to the circular arc hole formed on the rotating plate of the cover, such that the rotating plate and the circular plate of the cover are coupled.

The circular plate is made of metal or synthetic resin.

When the circular plate is made of metal, it is used where the weight is heavy but where durability is required and where instantaneous force is required.

When the circular plate is made of synthetic resin, it is used in a place where the weight is light, the load of the motor is minimized, and the power transmission efficiency is increased.

Therefore, the present invention is inexpensive, easy to manufacture, the coupling is installed between the pump body and the pump, the coupling is easy to adjust the straightness, concentricity, the degree of angle is less energy consumed in the power transmission power transmission This has an easy and remarkable effect.

10: gear 11: fastening body
12 gear tooth 13 bolt hole
20: circular plate 21: coupling hole
22: protruding jaw
30: cover 31: cover body
32: rotating plate
40: power transmission shaft
41: snap ring insertion groove 42: snap ring
100: pumping base 200: pump
210: water inlet 220: water outlet
400: Press
410: lower die 411: seating groove
412: round hole
420: upper die 421: first pressing projection

Claims (2)

Pumping base body 100 is installed inside the motor,
Receives power from the motor of the pumping body 100 is made of a pump 200 for introducing water to the outside to discharge the water to the outside,
The pump 200 has a water inlet 210 for introducing external water to one side is formed, the water outlet 300 for discharging the water introduced into the pump 200 to the outside is formed, the pumping body In the rechargeable water pump is provided with a coupling (1) between the motor and the pump 200 installed inside the (100),
The coupling 1 is coupled to the rotating shaft of the motor to transfer power to the machine, the gear 10 is coupled to the rotating shaft of the motor, the gear 10 is connected to the power of the gear 10 Received circular plate 20, the circular plate 20 is made of a cover 30 is coupled to the inside,
The cover 30 is coupled to the housing of the motor, the outer side of the cover 30 is connected to the circular plate 20 inside the cover 30 is a power transmission shaft 40 for transmitting power to the mechanical device is formed The power transmission shaft 40 transmits power to the connection bar, and the cover 30 is a cover body 31 and a rotating plate 32 rotatably coupled to the inside of the cover body 31. Is coupled to the center of the rotating plate 32 is rotated with the rotating plate 32 and made of a power transmission shaft 40 protruding to the outside through the cover body 31,
The power transmission shaft 40 is coupled to penetrate the rotating plate 32 and the cover body 31 from the rear to the front, the power transmission shaft 40 is manufactured by punching, the rear of the power transmission shaft 40 The diameter is formed to be thicker than the front, and the rotating plate 32 is formed by the press 400, the rotating plate 32 is a cylindrical shape when processing the press 400, the top is open After processing, the half-moon hole is processed so as to penetrate the front and rear of the rotating plate 32,
The cover 30, the rotation plate 32, the coupling method of the power transmission shaft 40 is coupled to the rotation plate 32 to the rear of the cover 30, the power transmission shaft 40 and the cover 30 Through the rotating plate 32 and the rear is to be welded to the rotating plate 32,
The gear 10 is composed of a pipe-shaped fastening body 11 coupled to the rotating shaft of the motor, and a plurality of gear teeth 12 protruding from the outer periphery of the end of the fastening body 11, the fastening The gear teeth 12 formed in the body 11 are formed at six intervals, and the cross section is “

Formed into a shape,
When the gear teeth 12 are six, the gear teeth 12 are in contact with the circular plate 20, so that it is easy to transmit power, and is close to the gear teeth 12 formed in the fastening body 11. A round is formed between the other gear teeth and is formed at 10 to 25 °, and the end round of the gear teeth 12 is formed at 2 to 9 °, and the gear teeth 12 of the gear 10 are circular plates ( 20) when the power is transmitted to the gear 10 and the circular plate 20, the friction does not occur, noise and vibration is reduced, it is possible to prevent the overload during power transmission,
The gear 10 has a bolt hole 13 formed at the outer circumference of the fastening body 11, and when the fastening body 11 is coupled to the rotating shaft of the motor, the fastening body 11 of the gear 10 is fitted to the rotating shaft. 11 to insert the bolt into the bolt hole 13 formed in the coupling shaft to the gear,
The gear 10 processes a cylindrical metal material, and divides the cylindrical material into upper and lower parts so that the diameter of the lower part is smaller than the diameter of the upper part, and the upper end of the material is gear teeth 12. Formed and processed to form a hexagonal star, the insertion hole is machined to penetrate the upper and lower parts of the material so that the rotating shaft of the motor is inserted, a hole is formed in the outer periphery of the lower end of the material, and a screw surface is formed in the inner diameter of the hole. To build gears,
The circular plate 20 to which the gear 10 is coupled has a coupling hole 21 corresponding to the shape of the gear teeth 12 formed at the outer circumference of the gear 10, and the circular plate 20 is a circular plate 20. Shape, but a plurality of projection jaw 22 is formed radially at the end, the projection jaw 22 is coupled to the rotation plate 32 is coupled to the cover 30, the rotation plate 32 The coupling hole is formed so that the plurality of protruding jaws 22 formed in the circular plate 20 can be inserted and coupled,
When the gear 10 is coupled to the rotary shaft of the motor to rotate together with the rotary shaft, the gear 10 rotates the circular plate 20, the circular plate 20 is coupled to the rotary plate 32 of the motor, The rotating plate 32 is also rotated together, and as the rotating plate 32 is rotated, the power transmission shaft 40 coupled to the rotating plate 32 is also rotated.
The coupling hole 21 formed in the circular plate 20 is formed in the shape of a hexagonal star, the cross section of "

'' Shape, the gear 10 is a portion of the gear teeth 12 is inserted into the coupling hole 21 of the circular plate 20 to transmit power, the gear teeth 12 and the circular plate of the gear 10 The coupling holes 21 of the 20 are formed in a space between each other with a space of 0.5 to 2 mm, and the gear 10 rotated by the rotating shaft of the motor is transmitted by the vibration and the working part of the motor when the motor rotates. Even if the vibration caused by the external shock is generated to prevent the loss of power transmitted due to the clearance space between the gear teeth 12 and the circular plate 20,
The gear teeth 12 are formed to have a predetermined thickness in the longitudinal direction of the fastening body 11 of the gear 10, the circular plate 20 is 1/2 to 1 / thickness of the gear teeth 12 It is formed with a thickness of 5, even if the length of the rotation shaft of the motor is different, the thickness of the gear teeth 12 of the gear 10 coupled to the rotation shaft is thicker than the thickness of the circular plate 20 can easily transfer power between each other, When the gear 10 transmits power to the circular plate 20 will be able to adjust the degree of straightness, concentricity, the degree of angle,
The circular plate 20 is made of a metal or synthetic resin material, the circular plate 20 is processed by forming a coupling hole 21 in the center of the circular plate 20 by a press, the circular plate 20 by the press Protrusion jaw 22 is formed on each side at the time of processing, the protruding jaw 22 is a worker bends 90 ° using a hand tool,
The method of manufacturing the cover 30, first to manufacture a rotating plate 32, the first step of manufacturing the rotating plate 32 is provided with a material of the shape of a circular plate,
In the second step, the circular plate material is processed into a press 400 to form a rotating plate 32 semifinished product, and the rotating plate 32 semifinished product shaped into the press 400 is formed in a cylindrical shape with an upper opening. The lower surface of the semi-finished product of the rotating plate 32 is formed with a circular hole, and the press 400 includes a lower die 410 and an upper die 420, and the lower die 410 has a cylindrical shape on its upper surface. A seating groove 411 is formed, and a circular circular hole 412 is formed on an inner bottom surface of the seating groove 411. The upper die 420 has a cylindrical first pressing protrusion 421 formed on a bottom surface thereof. And a second pressing protrusion having a cylindrical shape is formed on a lower surface of the first pressing protrusion 421, and the diameter of the seating groove 411 formed in the lower die 410 is the first pressing protrusion formed on the upper die. The diameter is larger than that of 421, the first pressing protrusion 421 is inserted into the seating groove 411, When the first pressing protrusion 421 is inserted into the seating groove 411, the second pressing protrusion formed on the lower surface of the first pressing protrusion 421 is formed on the inner bottom surface of the seating groove 411. Is inserted into, the second pressing projection and the circular hole 412 is formed in the same diameter, the rotating plate formed by the press is formed in a cylindrical shape of the upper surface is opened, the inner surface of the circular hole 412 is formed Will be
Step 3 forms a pair of arc-shaped arc holes 412 around the circular hole 412 of the semi-finished rotating plate 32 to form a finished rotating plate 32, the semi-finished rotating plate 32 The arc hole 412 formed in the is formed by a punching machine,
Secondly, the cover body is molded into a mold,
Third, by molding the power transmission shaft into a mold, the power transmission shaft 40 is formed in a cylindrical shape, the rear diameter is formed larger than the front diameter, and the screw surface in front of the power transmission shaft 40 And a snap ring insertion groove 41 is formed at an outer circumference of the power transmission shaft 40.
Fourth, by coupling the cover body, the rotation plate and the power transmission shaft, install a ring-shaped bearing inside the cover body 31, the rotating plate 32 is placed behind the bearing, the rotating plate Opened portion of the 32 is settled to face the outside while being coupled to the cover body 31, the bearing is fixedly coupled to the cover body 31 in a state coupled to the power transmission shaft 40, the cover body 31, coupled to the power transmission shaft through the bearing and the rotating plate 32, but coupled by a punching machine, the rotary plate 32 and the power transmission shaft 40 by welding so as not to separate, the welding The snap ring 42 is coupled to the snap ring insertion groove 41 formed on the outer circumference of the power transmission shaft 40, and the snap ring insertion groove 41 formed on the power transmission shaft 40 is located in front of the bearing. Is formed, the power transmission shaft 40 is cut After passing through the ring, the snap ring 42 is coupled to the snap ring insertion groove 41, and the bearing coupled to the power transmission shaft 40 is not separated by the snap ring 42, and the cover body 31 Rotating plate 32 and the power transmission shaft 40 while being coupled is a rechargeable pumping water, characterized in that rotatably installed
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