Washing arm and dish washing machine

Abstract

The utility model discloses a washing arm which comprises a water distribution three-way seat, a main washing arm assembly, a rinsing arm assembly and a water distribution bolt shaft, the rinsing arm assembly is arranged on the periphery of the water distribution bolt shaft in a sleeved mode and can rotate around the water distribution bolt shaft, and the water distribution three-way seat is provided with a connecting shaft in a protruding and extending mode towards the main washing arm assembly. The main washing arm assembly is arranged on the periphery of the connecting shaft in a sleeving mode and can rotate around the connecting shaft, and the water distribution bolt shaft is in threaded connection with the connecting shaft. A locking nut is arranged between the main washing arm assembly and the rinsing arm assembly, the locking nut is connected to the water distribution bolt shaft in a threaded mode, at least one locking screw is arranged on the locking nut, and the locking screw is used for fastening the locking nut to the water distribution bolt shaft. Through the design that the locking screw is additionally arranged on the locking nut, the problem that the locking nut is loosened due to rotation of the rinsing arm assembly and the main washing arm assembly is solved, and the operation stability and the washing effect of the dish washing machine are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of dishwasher equipment, in particular to a washing arm and a dishwasher. Background Art

[0002] In the field of modern dishwasher technology, the design and function of the wash arm assembly has a crucial impact on the washing effect. Dishwashers are usually equipped with multiple wash arm assemblies, including a main wash arm assembly and a rinse arm assembly, which rotate to spray high-pressure water to achieve the purpose of cleaning dishes.

[0003] In the traditional design of the wash arm assembly, the main wash arm assembly and the rinse arm assembly are respectively installed on a water-dividing bolt shaft, wherein the rinse arm assembly usually sprays water through the nozzle thereon, causing the rinse arm assembly to rotate counterclockwise. However, this counterclockwise rotation may cause the locking nut connected thereto to loosen. The locking nut is generally threaded clockwise on the water-dividing bolt shaft. When the rinse arm assembly rotates counterclockwise, the locking nut will gradually loosen, eventually causing the water-dividing bolt shaft to separate from the connecting shaft, affecting the normal operation of the dishwasher. In addition, the water sprayed from the main wash arm assembly will also push the rinse arm assembly to rotate counterclockwise, exacerbating the loosening of the locking nut. Therefore, improvements are needed. Utility Model Content

[0004] The utility model aims to overcome the deficiencies of the prior art and provide a washing arm with a stable connection.

[0005] The technical solution of the utility model provides a washing arm, including a water-dividing three-way seat, a main washing arm assembly, a rinsing arm assembly and a water-dividing bolt shaft, wherein the rinsing arm assembly is sleeved on the outer periphery of the water-dividing bolt shaft and can rotate around the water-dividing bolt shaft, the water-dividing three-way seat is provided with a connecting shaft protruding toward the main washing arm assembly, the main washing arm assembly is sleeved on the outer periphery of the connecting shaft and can rotate around the connecting shaft, and the water-dividing bolt shaft is threadedly connected to the connecting shaft. A locking nut is provided between the main washing arm assembly and the rinsing arm assembly, the locking nut is threadedly connected to the water-dividing bolt shaft, and at least one locking screw is provided on the locking nut, and the locking screw is used to fasten the locking nut to the water-dividing bolt shaft.

[0006] Furthermore, at least one locking screw hole is formed on the locking nut, and the locking screw corresponds to the locking screw hole one by one and is threadedly connected.

[0007] Furthermore, a flange for preventing the rinsing arm assembly from falling off is arranged on the outer periphery of the water-dividing bolt shaft, and the rinsing arm assembly abuts against the upper part of the flange.

[0008] Further, the rinse arm assembly includes a rinse arm body and a water diversion sleeve, the water diversion sleeve is connected to the inner wall of the wash arm body and is sleeved on the outer circumference of the water diversion bolt shaft, the water diversion bolt shaft is provided with a plurality of first water diversion holes, the water diversion sleeve is provided with a plurality of second water diversion holes corresponding to the first water diversion holes, and the inner cavity of the rinse arm is connected to the inner cavity of the water diversion bolt shaft through the first water diversion holes and the second water diversion holes.

[0009] Furthermore, a first sealing sleeve is sleeved on the outer wall of the upper port of the water-dividing shaft sleeve, the upper end of the first sealing sleeve is tightly pressed against the rinsing arm body, and the lower end of the first sealing sleeve is tightly pressed against the upper side of the flange.

[0010] Furthermore, a second sealing sleeve is provided on the outer wall of the lower port of the water-dividing shaft sleeve, the upper end of the second sealing sleeve is tightly pressed against the locking nut, and the lower end of the second sealing sleeve is tightly pressed against the rinsing arm body.

[0011] Furthermore, a wear-resistant gasket is provided between the main wash arm assembly and the locking nut, and the wear-resistant gasket is sleeved on the outer circumference of the water diversion bolt shaft.

[0012] The utility model also provides a dishwasher, comprising the washing arm mentioned above.

[0013] After adopting the above technical solution, the following beneficial effects are achieved:

[0014] The utility model solves the problem that the locking nut becomes loose due to the rotation of the rinse arm assembly and the main wash arm assembly by adding a locking screw to the locking nut, thereby improving the running stability and cleaning effect of the dishwasher. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The disclosure of the present invention will become easier to understand with reference to the accompanying drawings. It should be understood that these drawings are only for illustrative purposes and are not intended to limit the scope of protection of the present invention. In the drawings:

[0016] Figure 1 It is a three-dimensional diagram of a wash arm in one embodiment of the utility model;

[0017] Figure 2 is a cross-sectional view of a wash arm in one embodiment of the utility model;

[0018] Figure 3 It is an exploded view of a wash arm in one embodiment of the utility model.

[0019] Reference table of reference numerals:

[0020] 1. Water-dividing tee seat; 11. Connecting shaft; 2. Main wash arm assembly; 3. Rinse arm assembly; 31. Rinse arm body; 32. Water-dividing shaft sleeve; 321. Second water-dividing hole; 322. First sealing sleeve; 323. Second sealing sleeve; 4. Water-dividing bolt shaft; 41. First water-dividing hole; 42. Flange; 43. Wear-resistant gasket; 5. Locking nut; 51. Locking screw. DETAILED DESCRIPTION

[0021] The specific implementation of the utility model is further described below in conjunction with the accompanying drawings.

[0022] It is easy to understand that according to the technical solution of the utility model, without changing the essential spirit of the utility model, a variety of structural modes and implementation modes can be replaced by those skilled in the art. Therefore, the following specific implementation methods and drawings are only exemplary descriptions of the technical solution of the utility model, and should not be regarded as the entirety of the utility model or as a limitation or restriction on the technical solution of the utility model.

[0023] The directional terms such as up, down, left, right, front, back, front, back, top, bottom, etc. mentioned or may be mentioned in this specification are defined relative to the structures shown in the drawings. They are relative concepts and may change accordingly according to their different positions and different usage conditions. Therefore, these or other directional terms should not be interpreted as restrictive terms. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above-mentioned in the present utility model can be understood according to the specific circumstances.

[0025] In some embodiments of the utility model, the wash arm includes a water-dividing tee seat 1, a main wash arm assembly 2, a rinsing arm assembly 3 and a water-dividing bolt shaft 4, the rinsing arm assembly 3 is sleeved on the outer periphery of the water-dividing bolt shaft 4 and can rotate around the water-dividing bolt shaft 4, the water-dividing tee seat 1 is provided with a connecting shaft 11 protruding toward the main wash arm assembly 2, the main wash arm assembly 2 is sleeved on the outer periphery of the connecting shaft 11 and can rotate around the connecting shaft 11, and the water-dividing bolt shaft 4 is threadedly connected to the connecting shaft 11. A locking nut 5 is provided between the main wash arm assembly 2 and the rinsing arm assembly 3, the locking nut 5 is threadedly connected to the water-dividing bolt shaft 4, and at least one locking screw 51 is provided on the locking nut 5, and the locking screw 51 is used to fasten the locking nut 5 to the water-dividing bolt shaft 4.

[0026] Specifically, the water-dividing three-way seat 1 is the basic part of the entire washing arm, the main washing arm assembly 2 is the main part for washing dishes, the rinsing arm assembly 3 undertakes part of the rinsing function, and the water-dividing bolt shaft 4 plays a connecting and supporting role.

[0027] The connecting shaft 11 protrudes from the water-dividing three-way seat 1. The locking nut 5 is used for fixing and connecting. The locking screw 51 strengthens the tightening effect of the locking nut 5. The rinsing arm assembly 3 is sleeved on the outer periphery of the water-dividing bolt shaft 4, and the main washing arm assembly 2 is sleeved on the outer periphery of the connecting shaft 11, and they can rotate around the connecting shaft 11. The water-dividing bolt shaft 4 is connected to the connecting shaft 11 by threads. The locking nut 5 is screwed on the water-dividing bolt shaft 4 and is located between the main washing arm assembly 2 and the rinsing arm assembly 3. The main washing arm assembly 2 and the rinsing arm assembly 3 are connected to the water-dividing three-way seat 1 through the water-dividing bolt shaft 4, and are further fixed by the locking nut 5. The water flow pushes the main washing arm assembly 2 to rotate clockwise and pushes the rinsing arm assembly 3 to rotate counterclockwise. Since the force generated by the main washing arm assembly 2 is greater than the force generated by the rinsing arm assembly 3, the locking nut 5 tends to be tightened more and more. When the dishwasher is working, water flows into the wash arm, and acts on the main wash arm assembly 2 and the rinse arm assembly 3 to rotate, and at the same time, the locking nut 5 is tightened by the locking screw 51. By providing the locking screw 51, the problem of the locking nut 5 being loosened due to the rotation of the rinse arm assembly 3 and the main wash arm assembly 2 is solved, the operation stability and cleaning effect of the dishwasher are improved, the service life of the equipment is extended, and the maintenance cost is reduced.

[0028] In addition, the water-dividing three-way seat 1 serves as the basic supporting structure of the entire washing arm, providing a position for installing and fixing other components. The connecting shaft 11 thereon is threadedly connected with the water-dividing bolt shaft 4 to achieve a stable combination of the two.

[0029] The water-dividing bolt shaft 4 serves to connect the main wash arm assembly 2, the rinse arm assembly 3 and the water-dividing tee seat 1, so that they form an integral structure. The water-dividing bolt shaft 4 provides an axis of rotation for the rinse arm assembly 3, so that it can rotate around the axis, thereby realizing the function of spraying water for cleaning. In cooperation with the locking nut 5, the relative position and tightening degree between the main wash arm assembly 2 and the rinse arm assembly 3 are fixed and adjusted through threaded connection.

[0030] The working principle of the locking nut 5 is mainly to fix and position the rinse arm assembly 3 and the main wash arm assembly 2 in the axial direction through the threaded connection with the water-dividing bolt shaft 4. When the rinse arm assembly 3 rotates counterclockwise under the action of the water flow, it may cause the connection between it and the water-dividing bolt shaft 4 to loosen. However, since the locking nut 5 is screwed on the water-dividing bolt shaft 4 and a locking screw 51 is provided on it for further tightening, the nut can be prevented from loosening, thereby maintaining the stability of the entire structure. At the same time, the force generated by the clockwise rotation of the main wash arm assembly 2 under the action of the water flow is greater than the force of the counterclockwise rotation of the rinse arm assembly 3, which will cause the locking nut 5 to have a tendency to be further tightened, thereby ensuring the stable connection between the water-dividing bolt shaft 4 and the connecting shaft 11, ensuring that the wash arm assembly can function normally during the working process and will not fail due to loosening.

[0031] In some embodiments of the present invention, at least one locking screw hole is formed on the locking nut 5 , and the locking screw 51 corresponds to the locking screw hole one by one and is threadedly connected.

[0032] Specifically, the installation position of the locking screw hole is on the locking nut 5, and through the threaded connection with the locking screw 51, when the locking screw 51 is tightened, it cooperates with the locking screw hole to generate a tightening force, and the locking nut 5 is firmly fixed on the water-dividing bolt shaft 4. Such a design ensures a stable connection between the water-dividing bolt shaft 4 and the connecting shaft 11, thereby maintaining the normal working state of the dishwasher and improving the reliability and stability of the operation of the dishwasher; and such a design reduces the possible failures and maintenance costs caused by the loosening of the locking nut 5, and to a certain extent prolongs the service life of the equipment.

[0033] In some embodiments of the utility model, a flange 42 for preventing the rinsing arm assembly 3 from falling off is arranged on the outer periphery of the water-dividing bolt shaft 4 , and the rinsing arm assembly 3 abuts against the upper part of the flange 42 .

[0034] Specifically, the flange 42 and the water-dividing bolt shaft 4 are integrally formed, and the flange 42 plays a role of blocking and limiting. When the rinsing arm assembly 3 is sleeved on the water-dividing bolt shaft 4 and rotates, the flange 42 can prevent the rinsing arm assembly 3 from detaching from the water-dividing bolt shaft 4 upward.

[0035] In some embodiments of the utility model, the rinsing arm assembly 3 includes a rinsing arm body 31 and a water diversion sleeve 32, the water diversion sleeve 32 is connected to the inner wall of the wash arm body and is sleeved on the outer periphery of the water diversion bolt shaft 4, the water diversion bolt shaft 4 is provided with a plurality of first water diversion holes 41, and the water diversion sleeve 32 is provided with a plurality of second water diversion holes 321 corresponding to the first water diversion holes 41, and the inner cavity of the rinsing arm is connected to the water diversion bolt shaft 4 through the first water diversion holes 41 and the second water diversion holes 321.

[0036] Specifically, the water-dividing sleeve 32 is connected to the inner wall of the rinsing arm body 31. The first water-dividing hole 41 is located on the water-dividing bolt shaft 4. The second water-dividing hole 321 is located on the water-dividing sleeve 32. The water-dividing sleeve 32 is connected to the inner wall of the rinsing arm body 31 and is sleeved on the outer periphery of the water-dividing bolt shaft 4, so that the rinsing arm assembly 3 is assembled with the water-dividing bolt shaft 4 as a whole. The water flows into the inner cavity of the rinsing arm through the first water-dividing hole 41 on the water-dividing bolt shaft 4 and the second water-dividing hole 321 on the water-dividing sleeve 32, thereby providing a water source for the rinsing arm assembly 3 to spray water.

[0037] In some embodiments of the utility model, a first sealing sleeve 322 is sleeved on the outer wall of the upper end of the water-dividing sleeve 32 , and the upper end of the first sealing sleeve 322 is tightly pressed against the rinsing arm 31 , and the lower end is tightly pressed against the upper side of the flange 42 .

[0038] Specifically, the first sealing sleeve 322 is installed on the outer wall of the upper end of the water-dividing sleeve 32 of the rinse arm assembly 3, and is located between the rinse arm body 31 and the flange 42. By being sleeved on the outer wall of the upper end of the water-dividing sleeve 32, its upper end is tightly against the rinse arm body 31, and its lower end is tightly against the upper part of the flange 42, thereby achieving a sealing effect on this part and preventing water from leaking from this position. The sealing inside the rinse arm assembly 3 is effectively guaranteed, water leakage is avoided, and normal water circulation and pressure are ensured during the washing process of the dishwasher, which is conducive to improving the washing effect, and also helps to maintain the stable operation and performance of the entire washing arm structure.

[0039] In some embodiments of the utility model, a second sealing sleeve 323 is sleeved on the outer wall of the lower end of the water-dividing sleeve 32 . The upper end of the second sealing sleeve 323 is tightly pressed against the locking nut 5 , and the lower end is tightly pressed against the rinsing arm 31 .

[0040] Specifically, the working principle of the second sealing sleeve 323 is to play a sealing role by being sleeved on the outer wall of the lower end of the water-dividing shaft sleeve 32 to prevent water from leaking from this position. The second sealing sleeve 323 enhances the sealing performance of this part, reduces water leakage, and helps to ensure the normal operation and pressure stability of the water flow system in the dishwasher; the second sealing sleeve 323 is also closely matched with the locking nut 5 and the rinsing arm body 31, further ensuring the stability and reliability of the entire washing arm assembly structure.

[0041] In some embodiments of the utility model, a wear-resistant gasket 43 is provided between the main wash arm assembly 2 and the locking nut 5 , and the wear-resistant gasket 43 is sleeved on the outer periphery of the water-dividing bolt shaft 4 .

[0042] Specifically, when the main wash arm assembly 2 rotates clockwise under the action of water flow, the wear-resistant gasket 43 is located between the main wash arm assembly 2 and the locking nut 5, which plays a role in reducing friction and buffering. Its technical effects mainly include the following aspects: First, the wear caused by direct contact and relative movement between the main wash arm assembly 2 and the locking nut 5 is reduced, and the service life of the main wash arm assembly 2 and the locking nut 5 and other components is extended; second, by reducing friction, the rotation of the main wash arm assembly 2 is smoother, which helps to improve the washing efficiency and performance of the dishwasher; third, the buffering effect can reduce the noise caused by collision and friction between components, and improve the quietness of the dishwasher during operation; fourth, the relative position relationship between the main wash arm assembly 2 and the locking nut 5 can be better maintained, further ensuring the stability and reliability of the overall structure of the dishwasher arm assembly.

[0043] In some embodiments of the present invention, the dishwasher comprises the wash arm in any of the above embodiments.

[0044] The utility model solves the problem that the locking nut 5 becomes loose due to the rotation of the rinse arm assembly 3 and the main wash arm assembly 2 by adding a locking screw 51 to the locking nut 5, thereby improving the operation stability and cleaning effect of the dishwasher.

[0045] The above are only the principles and preferred embodiments of the present invention. It should be noted that, for those skilled in the art, on the basis of the principles of the present invention, several other modifications can be made, which should also be considered as the protection scope of the present invention.

Claims

1. A wash arm, characterized in that: It comprises a water-dividing tee seat, a main wash arm assembly, a rinsing arm assembly and a water-dividing bolt shaft, wherein the rinsing arm assembly is sleeved on the outer periphery of the water-dividing bolt shaft and can rotate around the water-dividing bolt shaft, the water-dividing tee seat is provided with a connecting shaft protruding toward the main wash arm assembly, the main wash arm assembly is sleeved on the outer periphery of the connecting shaft and can rotate around the connecting shaft, and the water-dividing bolt shaft is threadedly connected with the connecting shaft; A locking nut is provided between the main wash arm assembly and the rinse arm assembly. The locking nut is threaded on the water diversion bolt shaft. The locking nut is provided with at least one locking screw, and the locking screw is used to fasten the locking nut to the water diversion bolt shaft.

2. The wash arm according to claim 1, characterized in that: The locking nut is provided with at least one locking screw hole, and the locking screw corresponds to the locking screw hole one by one and is threadedly connected.

3. The wash arm according to claim 1, characterized in that: A flange for preventing the rinsing arm assembly from falling off is arranged on the outer periphery of the water-dividing bolt shaft, and the rinsing arm assembly abuts against the upper part of the flange.

4. The wash arm according to claim 3, characterized in that: The rinse arm assembly includes a rinse arm body and a water diversion sleeve, the water diversion sleeve is connected to the inner wall of the wash arm body and is sleeved on the outer circumference of the water diversion bolt shaft, the water diversion bolt shaft is provided with a plurality of first water diversion holes, the water diversion sleeve is provided with a plurality of second water diversion holes corresponding to the first water diversion holes, and the inner cavity of the rinse arm is connected to the inner cavity of the water diversion bolt shaft through the first water diversion holes and the second water diversion holes.

5. The wash arm according to claim 4, characterized in that: A first sealing sleeve is sleeved on the outer wall of the upper port of the water-dividing shaft sleeve, the upper end of the first sealing sleeve is tightly pressed against the rinsing arm body, and the lower end of the first sealing sleeve is tightly pressed against the upper side of the flange.

6. The wash arm according to claim 4, characterized in that: A second sealing sleeve is sleeved on the outer wall of the lower port of the water-dividing shaft sleeve, the upper end of the second sealing sleeve is tightly pressed against the locking nut, and the lower end of the second sealing sleeve is tightly pressed against the rinsing arm body.

7. The wash arm according to claim 1, characterized in that: A wear-resistant gasket is arranged between the main wash arm assembly and the locking nut, and the wear-resistant gasket is sleeved on the outer circumference of the water-dividing bolt shaft.

8. A dishwasher, characterized in that: The invention comprises the wash arm according to any one of claims 1 to 7.

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