CN217327831U - Electric water pump - Google Patents

Abstract

The utility model discloses lie in solving the not enough defect of current electric water pump stability, provide a weight low, make the better electric water pump of electric water pump stability. It includes water pump and motor to and the linking bridge who connects water pump and motor, linking bridge is formed by the steel sheet punching press, and middle low height all around, middle basin shape, center pin department offer be used for passing the shaft hole of motor shaft, linking bridge's two sides respectively with motor and water pump fixed connection, the rear end of motor housing is equipped with the dead eye. The utility model discloses a linking bridge of prior art die-casting is replaced to linking bridge of steel sheet punching press, and the thickness of steel sheet punching press is less than the thickness of die-casting far away, and the weight of steel sheet punching press linking bridge is also less than the weight of die-casting far away. The linking bridge of die-casting is equipped with the dead eye, the utility model discloses move the dead eye to motor housing, stamping workpiece linking bridge welds with motor housing is concentric again, and the function is equal to the linking bridge of die-casting and the motor housing of die-casting.

Description

Electric water pump

Technical Field

The utility model belongs to electric water pump field.

Background

The electric water pump consists of a water pump and a motor, and the rotating shaft of the motor provides power for the rotation of the impeller for the water pump. The traditional water pump motor has the supporting legs respectively for fixing the water pump motor and the motor on the bottom plate, but the connection precision of the impeller shaft and the motor rotating shaft is required to be high under the condition that the water pump impeller and the motor rotating shaft are directly connected, but the precision requirement is difficult to achieve in actual operation. In order to solve the precision problem, the supporting legs of a motor are removed from a part of electric water pumps on the market, only the supporting legs of the water pump are reserved, namely the motor is hung on the water pump, the weight of the motor is required to be reduced, few manufacturers design the motor in a light weight mode, aluminum alloy replaces cast iron to manufacture a motor shell, a connecting support between the motor and the water pump is manufactured by aluminum alloy die casting, as shown in the figure 1 and the figure 2, the connecting support is low in the middle and high at the periphery and is provided with a platform 32 at the periphery, a positioning block 33 and a bolt hole 34 are arranged on the platform, a shaft hole 35 is arranged in the middle of the connecting support, and sealing ring support pillars 36 and bearing holes 4 are respectively arranged on the peripheries of the shaft hole 35 on two sides of the connecting support. In the practical use process, the applicant finds that the aluminum material is too soft and often deforms and cracks, and therefore the applicant adopts the steel plate stretching motor shell to solve the problem that the aluminum shell is easy to deform and crack and applies for patent CN201921020070.8, but the problem that the weight is large due to the large thickness of the die-casting connecting support still exists, the stability of the electric water pump is reduced to a certain degree, and the defects of poor strength, high energy consumption, complex processing, low processing speed, high cost and the like exist.

In view of this, the present invention is proposed.

Disclosure of Invention

The utility model discloses lie in solving the not enough defect of current electric water pump stability, provide a weight low, make the better electric water pump of electric water pump stability.

The utility model provides an electric water pump, it includes water pump and motor to and the linking bridge of connecting water pump and motor, its main points lie in, linking bridge is formed by the steel sheet punching press, and the centre is low height all around, and the centre is the basin shape, and center pin department offers the shaft hole that is used for passing the motor pivot, the both sides of linking bridge respectively with motor and water pump fixed connection, the rear end of motor shell is equipped with the dead eye.

The utility model discloses a linking bridge that the steel sheet punching press formed replaces the linking bridge of die-casting among the prior art, and the thickness of steel sheet punching press is less than the thickness of die-casting far away, and the weight of steel sheet punching press linking bridge also is less than the weight of die-casting far away. Because the density of the steel plate is greater than that of the aluminum material, the steel plate has stronger stamping rigidity compared with the aluminum material die-cast connecting bracket. The linking bridge of tradition die-casting is equipped with the dead eye, the utility model discloses move the dead eye to motor housing, stamping workpiece linking bridge welds with motor housing is concentric again, and the function is equal to the linking bridge of die-casting and the motor housing of die-casting.

The basin-shaped bottom surface of the connecting support is welded and fixed with the motor, the platform at the top of the basin-shaped bottom surface is provided with a through hole, and the connecting support is fixed on the water pump through the through hole by a bolt.

The motor and the connecting support are lighter in weight, the connecting support is welded and fixed on the motor and convenient to operate, the motor and the connecting support are not provided with support legs, and the motor and the connecting support are hung on the water pump through bolts.

And a positioning block is arranged on the platform and is connected with a spigot of a front end cover of the water pump.

The positioning block is connected with the spigot and used for positioning the connecting bracket.

The positioning block is a quadrilateral bulge on the platform, wherein the edge far away from the shaft hole is arc-shaped and the arc is concentric with the shaft hole, the arc-shaped edge after being punched is higher than the platform, the other three edges are connected with the platform, and the arc-shaped edge of the positioning block is the same as the radian of the inner side surface of the front end cover seam allowance of the water pump and is connected with the inner side surface of the front end cover seam allowance of the water pump.

The locating piece that has circular arc limit cooperates with the tang of water pump front end housing with linking bridge and motor location, helps motor and water pump high-speed joint, and circular arc limit meets with the water pump medial surface to fix a position motor and linking bridge radially in the shaft hole, platform and water pump front end housing surface butt, thereby fix a position motor and linking bridge in the axial in shaft hole.

The positioning blocks are arranged around the circumferential direction of the shaft hole.

Because the tang of water pump front end housing is circular, the circumference direction arrangement of locating piece round the shaft hole can make the locating piece just on the internal circle surface of tang, and helps connecting the radial location in the shaft hole of support.

The utility model discloses a linking bridge of punching press preparation motor and water pump, linking bridge for traditional die-casting is made, thickness greatly reduced to alleviate linking bridge's weight, help the water pump stable. And secondly, necessary structures are processed in the stamping process of the connecting bracket, subsequent independent mechanical processing is not needed, and the production speed is increased. And thirdly, the stamping is cold processing, the die casting needs heating and pressurizing, and the energy consumption can be reduced by adopting the stamping to process the connecting bracket. And finally, the stamping forming speed is high, the number of parts which can be processed in unit time is far greater than that of die castings, the production speed is improved, and the production cost is reduced.

Drawings

FIG. 1 is a perspective view of a conventional connecting bracket

FIG. 2 is another perspective view of the prior art connecting bracket

FIG. 3 is a perspective view of the electric water pump

FIG. 4 is a top view of the electric water pump

FIG. 5 is a cross-sectional view S-S of FIG. 4

FIG. 6 is a perspective view of the connecting bracket and motor housing

FIG. 7 is a perspective view of the water pump

Wherein: the sealing ring comprises a motor 1, a rotating shaft 11, a water pump 2, a spigot 21, a connecting support 3, a basin 31, a platform 32, a positioning block 33, a positioning edge 331, a bolt hole 34, a shaft hole 35, a sealing ring top column 36 and a bearing hole 4.

Detailed Description

The embodiments illustrated herein will enable those skilled in the art to more fully understand the present invention, without limiting it in any way, when the present invention is described in detail below with reference to the accompanying drawings.

As shown in fig. 3 to 7, the utility model provides an electric water pump, linking bridge 3 one side and motor 1 welded fastening, the opposite side adopts bolted connection with water pump 2. The connecting support 3 is formed by stamping steel plates, the middle of the connecting support is low, the periphery of the connecting support is high, and the middle of the connecting support is low and the lower part of the connecting support is in a basin shape 31. The bottom of the basin-shaped body 31 is provided with a shaft hole 35, the motor rotating shaft 11 of the electric water pump passes through the shaft hole 35, and the shaft hole 35 is coaxial with the motor rotating shaft 11. The linking bridge of traditional die-casting is equipped with dead eye 4, the utility model discloses move dead eye 4 to motor 1's shell, stamping workpiece linking bridge 3 again with motor 1 shell concentric welding, the function is equal to the linking bridge of die-casting and the motor housing of die-casting.

The periphery of the basin-shaped part 31 is provided with a platform 32, a positioning block 33 is arranged on the platform, and the positioning block 33 is connected with the front end cover of the water pump to help the positioning of the connecting support 3. The positioning block 33 is a quadrilateral bulge on the platform, one side of the positioning block, which is far away from the shaft hole 35, is an arc-shaped positioning edge 331, the arc-shaped edge after being punched is higher than the platform, the other three edges of the quadrilateral are connected with the platform, and the positioning edge 331 is connected with the spigot 21 of the front end cover of the water pump so as to position the connecting support 3. The positioning edge far away from the shaft hole 35 is arc-shaped, the arc is coaxial with the shaft hole 35, and the diameter of the arc-shaped edge is equal to the diameter of the spigot 21 of the front end cover of the water pump. The number of the positioning blocks 33 is not less than two, and the number is preferably 3 in the embodiment. The platform 32 is connected with the end face of the front end cover of the water pump to axially position the connecting support 3 and the motor rotating shaft 11, and the positioning edge 331 of the positioning block 33 is connected with the inner circular surface of the spigot 21 to radially position the connecting support 3 and the motor rotating shaft 11.

The platform 32 is further provided with bolt holes 34 for fixedly connecting the connecting bracket 3 and the water pump 2, wherein the bolt holes 34 are through holes, and bolts are inserted from the side of the connecting bracket 3 close to the motor, pass through the bolt holes 34 and then are locked on the water pump 2, so that the connecting bracket 3 and the motor 1 are locked on the water pump 2.

The connecting support 3 is formed by punching a steel plate with the thickness of less than 3mm, the thickness of the connecting support is uniform, and compared with die-casting, the thickness of the connecting support is greatly reduced by punching, and the weight is further reduced. The specific gravity of aluminum is 2.81, the specific gravity of steel is 7.85, the weight of a steel plate is 2.8 times that of aluminum, but the thickness of an aluminum die casting is more than 3 times that of a steel plate stamping part, so that the weight of the punch-formed connecting bracket is lower than that of the traditional die-casting connecting bracket. The die-cast connecting bracket has a weight of 0.475kg, and the press-formed connecting bracket has a weight reduced by 0.142kg relative to the die-cast connecting bracket. The utility model discloses with the weight reduction of linking bridge 3 about 30%, help lightening the weight of motor and linking bridge side, keep electric water pump's balance.

Above embodiment only is for explaining the utility model discloses a technical thought can not be injectd with this the utility model discloses a protection scope, all according to the utility model provides a technical thought, any improvement of doing on technical scheme basis and equal replacement all fall into within the protection scope of the utility model.

Claims (5)

1. The utility model provides an electric water pump, it includes water pump and motor to and the linking bridge of connecting water pump and motor, its characterized in that, linking bridge is formed by the steel sheet punching press, and the centre is low height all around, and the centre is the basin shape, and center pin department offers the shaft hole that is used for passing the motor pivot, the both sides of linking bridge respectively with motor and water pump fixed connection, the rear end of motor shell is equipped with the dead eye.

2. The electric water pump as claimed in claim 1, wherein the bottom of the basin-shape of the connection bracket is welded to the motor, the platform at the top of the basin-shape is provided with a through hole, and a bolt is used for fixing the connection bracket to the water pump through the through hole.

3. The electric water pump as claimed in claim 2, wherein the platform is provided with a positioning block, and the positioning block is connected with a spigot of a front end cover of the water pump.

4. The electric water pump as claimed in claim 3, wherein the positioning block is a quadrilateral protrusion on the platform, wherein the side away from the shaft hole is arc-shaped and concentric with the shaft hole, the arc-shaped side after punching is higher than the platform, the other three sides are connected with the platform, and the arc-shaped side of the positioning block has the same radian as the inner side surface of the front end cover seam allowance of the water pump and is connected with the inner side surface of the front end cover seam allowance of the water pump.

5. The electric water pump as claimed in claim 4, wherein the positioning block is arranged around a circumferential direction of the shaft hole.

Images