A fixing mechanism of a washing pump for a dishwasher

Abstract

The utility model discloses a kind of fixing mechanism of dish washer washing pump, the washing pump includes pump shell and washing motor installed in pump shell, it is characterized in that, the fixing mechanism includes: fixed seat, the fixed seat is fixedly installed below the base of dish washer, hook is set on the both sides of the fixed seat;Two annular elastomers;Two lugs are set on the both sides of pump shell, two lugs on the same side of pump shell are connected by annular elastomer and hook suspension;Anti-falling structure, the anti-falling structure includes anti-falling plate, one end of the anti-falling plate is rotatably connected with fixed seat, the other end of the anti-falling plate has two brackets, the bracket is provided with bracket slot, the connecting rod of lower end of pump shell and bracket slot contact, locking assembly is further provided between the anti-falling plate and fixed seat.This dish washer washing pump fixing mechanism has the beneficial effects of high structural stability, long service life, and prevents falling.

Description

Technical Field

[0001] This utility model relates to the field of dishwasher technology, and in particular to a fixing mechanism for a dishwasher washing pump. Background Technology

[0002] As a mainstream kitchen cleaning appliance, dishwashers utilize a high-pressure spray system to efficiently clean dishes. An internal pump pressurizes the water flow, delivering the high-pressure water to the spray arms. From there, a dense, high-speed water jet forms through spray nozzles on the arms, washing away grease and food residue. The main component of a dishwasher is the wash pump located beneath the base. This pump consists of a pump housing, a pump body assembly, and a wash motor. The pump body assembly includes an impeller, pump chamber, and other fluid pressurization structures. The wash motor provides the power source, and the pump housing houses the motor and pump body assembly. Because the wash motor generates continuous mechanical vibration during operation, rigidly fixing the pump housing directly to the dishwasher base would transmit this vibration to the entire machine and other internal components. This would not only cause resonance and produce harsh noise, affecting the user experience, but also potentially lead to loose connections, structural fatigue, and reduced lifespan of the dishwasher over time.

[0003] To address the aforementioned vibration issues, a flexible suspension system is commonly used to limit the installation of the washing pump. This structure typically uses a nitrile rubber elastic band as the core load-bearing component. Leveraging the excellent elastic deformation capability, oil resistance, and water resistance of nitrile rubber, the washing pump is suspended and fixed below the dishwasher base. When the washing pump is operating, the elastic band absorbs the vibration energy generated by the motor through its own stretching and rebound, blocking the transmission path of vibration to the base and the entire machine, thus achieving the dual purpose of vibration reduction and noise reduction, and component protection.

[0004] However, because the washing pump must always be suspended from the base by the elastic band, the elastic band is under continuous tension from the moment it is installed. During the start-up, shutdown, and operation of the washing pump, the vibration of the washing motor further causes the elastic band to undergo high-frequency, reciprocating stretching and contraction deformation under this stress. This combined condition of continuous stress and high-frequency dynamic deformation accelerates the fatigue aging process of the nitrile rubber material, leading to the breakage of rubber molecular chains, a decrease in elastic modulus, and surface cracks, ultimately causing the elastic band to fail. Once the elastic band loses its load-bearing and elastic capacity, problems may arise such as unstable suspension of the washing pump, increased vibration, and a sudden increase in noise. In severe cases, the elastic band may break, causing the washing pump to detach and fall, or even collide with and damage the base or surrounding components, leading to serious malfunctions such as washing pump shutdown and water leakage. This directly affects the normal use of the dishwasher, posing significant safety hazards and after-sales repair risks. Summary of the Invention

[0005] In view of the shortcomings of the prior art, the technical problem to be solved by this patent application is how to provide a fixing mechanism for a dishwasher washing pump that has high structural stability, long service life and prevents it from falling.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] A fixing mechanism for a dishwasher washing pump, the washing pump including a pump housing and a washing motor installed within the pump housing, characterized in that the fixing mechanism includes:

[0008] A mounting base is fixedly installed under the base of the dishwasher, and hooks are provided on both sides of the mounting base;

[0009] Two ring-shaped elastomers;

[0010] Two lifting lugs are provided on both sides of the pump casing. The two lifting lugs on the same side of the pump casing are suspended and connected to the hooks by an annular elastic body.

[0011] The fall protection structure includes a fall protection plate, one end of which is rotatably connected to a fixed base, and the other end of which has two brackets with grooves. Connecting rods on both sides of the lower end of the pump casing contact the grooves, and a locking component is also provided between the fall protection plate and the fixed base.

[0012] In the above technical solution, the mounting base is installed below the dishwasher base, providing a stable installation foundation for the washing pump. Hooks on both sides, in conjunction with annular elastomers, suspend the pump housing. The elastomers buffer the vibrations generated by the washing motor during operation, reducing vibration transmission to the base and lowering noise. This structure is the current installation structure for washing pumps in dishwashers. The washing pump structure includes a pump housing, a washing motor, and a pump body assembly. The washing motor is installed inside the pump housing, which includes an upper shell and a lower shell. Holes are provided around the upper and lower shells, through which a screw passes and connects with a nut, connecting the upper and lower shells and simultaneously fixing the washing motor within them. This technical solution creatively adds an anti-fall structure. After the washing pump is suspended, the anti-fall plate is rotated to its position below the washing pump, where a bracket supports the connecting rod (a threaded screw). A locking assembly then secures the anti-fall plate, preventing it from flipping. When the washing pump needs to be disassembled, the locking assembly is removed, the anti-fall plate is rotated to one side, and the annular elastomer is removed, allowing the washing pump to be removed. The ring elastomer is made of nitrile rubber or EPDM rubber and has excellent elasticity.

[0013] The anti-fall structure provides additional safety. When the annular elastomer malfunctions, the bracket on the anti-fall plate can support the pump casing in time, preventing it from falling and causing damage, which greatly improves the reliability and safety of the washing pump's fixation.

[0014] Preferably, the locking assembly includes a locking seat, which is fixedly connected to a fixing seat. The locking seat is welded with two nuts, and a clearance hole is provided on the threaded hole of the locking seat opposite to the nut. The fall arrestor plate is provided with a through hole for the bolt to pass through. When the fall arrestor plate contacts the locking seat, the through hole and the clearance hole are aligned, and the bolt passes through the through hole and the clearance hole and is connected to the nut.

[0015] Preferably, the fall arrestor is provided with a plurality of raised ribs, which are arranged perpendicularly to the surface of the fall arrestor.

[0016] Preferably, a rubber shock-absorbing pad is bonded inside the bracket.

[0017] Preferably, the fixed base is rotatably mounted with a rotating shaft, one end of the fall arrestor plate is provided with two shaft holes, the rotating shaft is provided with an annular groove at the position opposite the shaft holes, a shock-absorbing pad is bonded in the annular groove, and the shock-absorbing pad is located in the shaft hole.

[0018] Preferably, the lower end of the locking seat is provided with a shock-absorbing groove, and a rubber shock-absorbing pad is bonded inside the shock-absorbing groove. The rubber shock-absorbing pad is provided with a through hole facing the clearance hole.

[0019] Preferably, the locking seat is U-shaped and has a reinforcing plate welded to its inner side, and the two sides of the locking seat are welded to the fixing seat.

[0020] In summary, the fixing mechanism of the washing pump in this dishwasher has the advantages of high structural stability, long service life, and prevention of falling. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the fixing mechanism for a dishwasher washing pump according to the present invention.

[0022] Figure 2 for Figure 1 Enlarged diagram of point A in the middle.

[0023] Figure 3 for Figure 1 A schematic diagram of the structure after removing the washing pump.

[0024] Figure 4 This is a schematic diagram of the structure of a washing pump.

[0025] Figure 5 This is a schematic diagram of the washing pump and the anti-fall structure.

[0026] Figure 6This is a schematic diagram of a fall protection structure.

[0027] Figure 7 for Figure 6 A diagram showing another location.

[0028] Figure 8 This is a schematic diagram of the locking seat.

[0029] Figure 9 This is a schematic diagram of the rotating shaft. Detailed Implementation

[0030] The present invention will now be described in further detail with reference to the accompanying drawings. In the description of the present invention, it should be understood that directional terms such as "upper," "lower," "top," and "bottom" indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are used only for the convenience of describing the present invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the scope of protection of the present invention. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0031] like Figure 1-9 As shown, a fixing mechanism for a dishwasher washing pump is disclosed. The washing pump includes a pump housing and a washing motor installed within the pump housing. The fixing mechanism comprises:

[0032] The fixed base 1 is fixedly installed under the base 2 of the dishwasher. Various pipes and other structures are also provided under the base of the dishwasher. Hooks 3 are provided on both sides of the fixed base.

[0033] Two annular elastomers 4;

[0034] Two lifting lugs 5 are provided on both sides of the pump casing. The two lifting lugs on the same side of the pump casing are suspended and connected to the hook through an annular elastic body.

[0035] The fall protection structure includes a fall protection plate 6, one end of which is rotatably connected to a fixed base, and the other end of which has two brackets 7. The brackets are provided with grooves 8. The connecting rods on both sides of the lower end of the pump casing are in contact with the grooves. A locking component is also provided between the fall protection plate and the fixed base.

[0036] In the above technical solution, the mounting base is installed below the dishwasher base, providing a stable installation foundation for the washing pump. Hooks on both sides, in conjunction with annular elastomers, suspend the pump housing. The elastomers buffer the vibrations generated during the operation of the washing motor, reducing the transmission of vibrations to the base and lowering noise. This part of the structure is the current installation structure for the washing pump in dishwashers. The washing pump structure includes a pump housing, a washing motor 9, and a pump body assembly. The washing motor is installed inside the pump housing, which includes an upper shell 10 and a lower shell 11. Holes are provided around the upper and lower shells, through which a screw 12 passes and connects with a nut, connecting the upper and lower shells and simultaneously fixing the washing motor within them. This technical solution creatively adds an anti-fall structure. After the washing pump is suspended, the anti-fall plate is rotated to its position below the washing pump. A bracket supports the connecting rod, which is a threaded screw. A locking assembly then secures the position of the anti-fall plate, preventing it from flipping over. When it is necessary to disassemble the washing pump, remove the locking assembly, rotate the anti-fall plate to one side, and remove the annular elastomer to remove the washing pump. The annular elastomer is made of nitrile rubber or EPDM rubber and has excellent elasticity.

[0037] The anti-fall structure provides additional safety. When the annular elastomer malfunctions, the bracket on the anti-fall plate can support the pump casing in time, preventing it from falling and causing damage, which greatly improves the reliability and safety of the washing pump's fixation.

[0038] In implementation, the locking assembly includes a locking seat 13, which is fixedly connected to a fixing seat. The locking seat is welded with two nuts 14. The locking seat has a clearance hole 15 opposite to the threaded hole of the nut. The fall arrestor plate has a through hole for the bolt 16 to pass through. When the fall arrestor plate contacts the locking seat, the through hole and the clearance hole are aligned. The bolt passes through the through hole and the clearance hole and is connected to the nut.

[0039] In this way, by connecting the bolt through the through hole and the nut, the fall arrestor plate can be firmly locked onto the fixed base. This ensures that the fall arrestor plate will not rotate arbitrarily during normal use, guaranteeing the stable function of the fall arrestor structure and further enhancing the fall protection effect on the washing pump, thus improving the stability of the entire fixing mechanism. Furthermore, the structure is simple and easy to use.

[0040] In implementation, the fall arrestor plate is provided with several raised ribs 17, which are perpendicular to the surface of the fall arrestor plate. The perpendicularity of the raised ribs to the surface of the fall arrestor plate can effectively enhance the structural strength and rigidity of the fall arrestor plate, making it less prone to deformation when supporting the pump casing, extending the service life of the fall arrestor plate, and improving the reliability of the fall arrestor structure when bearing the weight of the pump casing, thus ensuring the safe fixation of the washing pump.

[0041] During implementation, rubber shock-absorbing pads are bonded inside the bracket. The rubber shock-absorbing pads inside the bracket can buffer the hard contact between the pump housing connecting rod and the bracket, reduce vibration transmission, further reduce the impact of washing pump vibration on the anti-fall structure, and at the same time protect the pump housing connecting rod, preventing it from being damaged by direct friction with the bracket, thus improving the vibration reduction and noise reduction effect of the entire fixing mechanism.

[0042] In implementation, the fixed base is rotatably mounted with a rotating shaft 18. One end of the fall arrestor plate has two shaft holes. An annular groove 19 is provided on the rotating shaft directly opposite the shaft holes. A shock-absorbing pad is adhered to the annular groove and is located within the shaft holes. The shock-absorbing pad, located within the shaft holes, effectively reduces friction between the fall arrestor plate and the rotating shaft during rotation. It also buffers the fall arrestor plate's swaying caused by the vibration of the washing pump, further reducing vibration transmission and optimizing the overall damping performance of the fixing mechanism. This allows the fall arrestor structure to play a better role in damping and improves the stability of the washing pump.

[0043] In implementation, a shock-absorbing groove 20 is provided at the lower end of the locking seat, and a rubber shock-absorbing pad is adhered inside the groove. The rubber shock-absorbing pad has a through hole directly opposite the clearance hole. The rubber shock-absorbing pad here can absorb the vibration generated when the bolt is tightened, and at the same time, it plays a secondary buffering role against the vibration from the washing pump, further reducing the impact of vibration on the locking assembly and the entire fixing mechanism, improving the stability and reliability of the fixing mechanism, and enhancing its vibration reduction and noise reduction effect.

[0044] In practice, the locking seat is U-shaped with a reinforcing plate 21 welded to its inner side, and both sides of the locking seat are welded to the fixing seat. The U-shaped locking seat welded to the fixing seat provides a more stable connection, and the reinforcing plate welded to the inner side enhances the structural strength of the locking seat, making it less prone to deformation and damage when subjected to the force transmitted from the anti-fall plate and the pump casing. This further improves the reliability and stability of the locking assembly and ensures the effective fixing of the washing pump by the entire fixing mechanism.

[0045] Finally, it should be noted that those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims and their equivalents, this utility model also intends to include these modifications and variations.

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