Spraying arm assembly and dish washing machine

Abstract

The utility model discloses a spraying arm assembly and a dish washing machine. The spraying arm assembly comprises a main spraying arm, and a water inlet hole is formed in the main spraying arm; the planetary spraying arm is mounted on the main spraying arm; the upper part of the spraying arm connecting pipe is connected with the water inlet hole; the gushing arm support is arranged on the outer side of the lower portion of the gushing arm connecting pipe in a sleeving mode; the gear transmission assembly comprises a central gear, a planetary gear and a transmission rod, the planetary gear is in meshing transmission connection with the central gear, one end of the transmission rod is connected with the planetary gear, the other end of the transmission rod is connected with the planetary spraying arm, the central gear is fixedly arranged on the outer side of the spraying arm support in a sleeving mode, and the planetary spraying arm is connected with the planetary spraying arm. The spraying arm support and the main spraying arm are connected through the center gear.

Description

Technical Field

[0001] The utility model relates to the technical field of kitchen appliances, in particular to a spray arm assembly and a dishwasher. Background Art

[0002] The spray arm structures of dishwashers currently on the market are various, and some spray arm assemblies are composed of a main spray arm and one or more auxiliary spray arms. In order to achieve the movement of each main spray arm and auxiliary spray arm in a specific manner, a gear transmission method is often provided.

[0003] However, most gear structures are currently only designed to achieve a specific transmission ratio. If the spray arm assembly has a specific orientation requirement, the installation, connection, and position fixing of the spray arm assembly require multiple parts. This makes the structure of the spray arm assembly more complicated, and the leakage of the entire water flow system is greater, which greatly reduces the cleaning effect of the dishwasher.

[0004] Therefore, a spray arm assembly is urgently needed to solve the above problems. Utility Model Content

[0005] The present invention aims to solve at least one of the problems existing in the existing related technologies to a certain extent. To this end, the present invention proposes a spray arm assembly, in which a spray arm support and a main spray arm are connected by a central gear, so that the main spray arm is installed on the spray arm support, avoiding the need to set up a separate connecting structure for connection, simplifying the structure, and facilitating installation. When the main spray arm rotates, the planetary spray arm can also be driven to rotate through the gear transmission assembly, thereby making the main spray arm and the planetary spray arm rotate at a specific speed ratio, and can also reduce the leakage of the water flow system.

[0006] The above purpose is achieved through the following technical solutions:

[0007] A spray arm assembly, comprising:

[0008] A main spray arm, on which a water inlet hole is provided;

[0009] A planetary spray arm, mounted on the main spray arm;

[0010] A spray arm connecting pipe, the upper portion of which is connected to the water inlet hole;

[0011] A spray arm support, sleeved on the outer side of the lower part of the spray arm connecting pipe;

[0012] The gear transmission assembly includes a central gear, a planetary gear and a transmission rod. The planetary gear is meshed and transmission-connected with the central gear. One end of the transmission rod is connected to the planetary gear, and the other end is connected to the planetary spray arm. The central gear is sleeved and fixed on the outside of the spray arm support. The spray arm support and the main spray arm are connected through the central gear.

[0013] Optionally, the spray arm connecting pipe includes a pipe body and a first limiting portion arranged on the outside of the pipe body, the spray arm support includes a base and a connecting pipe arranged on the base, the connecting pipe is sleeved on the outside of the pipe body, a second limiting portion is arranged on the outside of the upper part of the connecting pipe, a third limiting portion and a fourth limiting portion are arranged on the inner wall of the center gear, the third limiting portion is located at the lower side of the second limiting portion, and the first limiting portion is located between the lower side of the fourth limiting portion and the upper side of the second limiting portion.

[0014] Optionally, one of a positioning protrusion and a positioning groove is further provided on the inner wall of the central gear, and the other of the positioning protrusion and the positioning groove is also provided on the connecting pipe, and the positioning protrusion is located in the positioning groove.

[0015] Optionally, the positioning groove is arranged on the outer side of the second limiting portion, and the positioning protrusion is arranged on the upper side of the third limiting portion.

[0016] Optionally, at least two of the second limiting portions and the third limiting portions are provided, at least one of the second limiting portions is provided with the positioning groove, and at least one of the third limiting portions is provided with the positioning protrusion.

[0017] Optionally, the inner side surface of the positioning groove and the outer side surface of the positioning protrusion are both arc-shaped surfaces.

[0018] Optionally, a fifth limiting portion is further provided on the outer side of the upper portion of the spray arm connecting pipe, a sixth limiting portion is provided on the inner wall of the water inlet hole, and the fifth limiting portion is located on the upper side of the sixth limiting portion.

[0019] Optionally, a first inclined guide surface is provided at one end of the bottom side surface of the fifth limiting portion, and the first inclined guide surface is inclined from bottom to top toward the upper side surface of the fifth limiting portion. The sixth limiting portion includes a limiting body portion, and a limiting groove corresponding to the fifth limiting portion is provided in the middle part of the upper side of the limiting body portion, and a second inclined guide surface matching the first inclined guide surface is provided on the upper side surface of one end of the limiting body portion, and the inclination direction of the second inclined guide surface is the same as the inclination direction of the first inclined guide surface.

[0020] Optionally, a pair of handles arranged opposite to each other are arranged on the circumference of the central gear.

[0021] Optionally, a first marking portion is provided on the lower side of the central gear, and a second marking portion corresponding to the first marking portion is provided on the lower side of the main spray arm.

[0022] Optionally, a third marking portion is provided on the lower side surface of the central gear, and a fourth marking portion corresponding to the third marking portion is provided on the lower side surface of the planetary gear.

[0023] Optionally, two of the planetary spray arms and two of the planetary gears are provided, one of the planetary spray arms is provided at each of the two opposite ends of the main spray arm, the lower side surface of the central gear is also provided with a fifth marking portion arranged opposite to the third marking portion, one of the planetary gears is provided on one side of the central gear, and the fourth marking portion is provided on the planetary gear, and the lower side surface of the other planetary gear is provided with a sixth marking portion corresponding to the fifth marking portion.

[0024] Another aspect of the utility model provides a dishwasher, comprising the above-mentioned spray arm assembly.

[0025] Compared with the prior art, the utility model has at least the following beneficial effects:

[0026] The spray arm assembly provided by the utility model includes a main spray arm, a planetary spray arm, a spray arm connecting pipe, a spray arm support and a gear transmission assembly. A water inlet hole is provided on the main spray arm. The planetary spray arm is installed on the main spray arm. The upper part of the spray arm connecting pipe is connected to the water inlet hole. The spray arm support is sleeved on the outer side of the lower part of the spray arm connecting pipe. The gear transmission assembly includes a central gear, a planetary gear and a transmission rod, the planetary gear is meshed and connected with the central gear, one end of the transmission rod is connected to the planetary gear, and the other end is connected to the planetary spray arm, the central gear is sleeved and fixed on the outer side of the spray arm support, the spray arm support and the main spray arm are connected through the central gear, so that the main spray arm is installed on the spray arm support, avoiding the need to set up a connection structure for connection, simplifying the structure, and facilitating installation. When the main spray arm rotates, the planetary spray arm can also be driven to rotate through the gear transmission assembly, so that the main spray arm and the planetary spray arm rotate according to a specific speed ratio, and the leakage of the water flow system can also be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a three-dimensional structural schematic diagram of a spray arm assembly provided by a specific embodiment of the utility model at one angle;

[0028] Figure 2 It is a three-dimensional structural schematic diagram of the spray arm assembly provided by a specific embodiment of the utility model from another angle;

[0029] Figure 3 yes Figure 1 Exploded diagram of

[0030] Figure 4 yes Figure 1 A top view of

[0031] Figure 5 yes Figure 4 Sectional view at AA in the middle;

[0032] Figure 6 yes Figure 5 The enlarged view of point B in the middle;

[0033] Figure 7 It is a schematic cross-sectional structural diagram of a main spray arm of a spray arm assembly provided in a specific embodiment of the utility model;

[0034] Figure 8 yes Figure 7 Enlarged view of point C in the middle;

[0035] Fig. 9 It is a three-dimensional structural schematic diagram of a spray arm connecting pipe of a spray arm assembly provided in a specific embodiment of the utility model;

[0036] Fig.10 It is a three-dimensional structural schematic diagram of a central gear of a spray arm assembly provided by a specific embodiment of the utility model at one angle;

[0037] Fig.11 It is a three-dimensional structural schematic diagram of the central gear of the spray arm assembly provided by a specific embodiment of the utility model from another angle;

[0038] Fig.12 It is a three-dimensional structural schematic diagram of a spray arm support of a spray arm assembly provided in a specific embodiment of the utility model;

[0039] Fig.13 It is a bottom view of the main spray arm of the spray arm assembly provided by a specific embodiment of the utility model;

[0040] Fig.14 It is a bottom view of the spray arm assembly provided by a specific embodiment of the utility model.

[0041] In the figure:

[0042] 1. main spray arm; 10. water inlet hole; 11. sixth position limiting part; 111. position limiting body part; 112. second inclined guide surface; 12. second marking part;

[0043] 2. Planetary spray arm;

[0044] 31. Central gear; 312. Third limiting portion; 313. Positioning protrusion; 314. Fourth limiting portion; 315. First marking portion; 316. Handle; 317. Third marking portion; 318. Fifth marking portion; 32. Planetary gear; 321. Fourth marking portion; 322. Sixth marking portion; 33. Transmission rod;

[0045] 4. Spray arm support; 41. Base; 42. Connecting pipe; 421. Second limiting portion; 422. Positioning groove;

[0046] 5. Spray arm connecting pipe; 51. Pipe body; 52. First limiting portion; 53. Fifth limiting portion; 531. First inclined guide surface. DETAILED DESCRIPTION

[0047] The following examples illustrate the present invention, but the present invention is not limited by these examples. Modifications to the specific implementation of the present invention or equivalent replacement of some technical features without departing from the spirit of the present invention should be included in the scope of the technical solution claimed for protection in the present invention.

[0048] Please refer to Figure 1-Figure 14 The utility model provides a spray arm assembly, including a main spray arm 1, a planetary spray arm 2, a spray arm connecting pipe 5, a spray arm support 4 and a gear transmission assembly. The main spray arm 1 is provided with a water inlet hole 10. The planetary spray arm 2 is mounted on the main spray arm 1. The upper part of the spray arm connecting pipe 5 is connected to the water inlet hole 10. The spray arm support 4 is sleeved on the outer side of the lower part of the spray arm connecting pipe 5. The gear transmission assembly includes a central gear 31, a planetary gear 32 and a transmission rod 33. The planetary gear 32 is meshed and transmission-connected with the central gear 31. One end of the transmission rod 33 is connected to the planetary gear 32, and the other end is connected to the planetary spray arm 2. The central gear 31 is sleeved and fixed on the outside of the spray arm support 4. The spray arm support 4 and the main spray arm 1 are connected through the central gear 31, so that the main spray arm 1 is installed on the spray arm support 4, avoiding the need to set up a separate connection structure for connection, simplifying the structure and facilitating installation. When the main spray arm 1 rotates, the planetary spray arm 2 can also be driven to rotate through the gear transmission assembly, thereby making the main spray arm 1 and the planetary spray arm 2 rotate at a specific speed ratio, and can also reduce the leakage of the water flow system.

[0049] Optionally, the spray arm connecting pipe 5 includes a pipe body 51 and a first limiting portion 52 arranged on the outside of the pipe body 51, the spray arm support 4 includes a base 41 and a connecting pipe 42 arranged on the base 41, the connecting pipe 42 is sleeved on the outside of the pipe body 51, and a second limiting portion 421 is arranged on the outside of the upper part of the connecting pipe 42. A third limiting portion 312 and a fourth limiting portion 314 are arranged on the inner wall of the central gear 31, the third limiting portion 312 is located at the lower side of the second limiting portion 421, and the first limiting portion 52 is located between the lower side of the fourth limiting portion 314 and the upper side of the second limiting portion 421. A third limiting portion 312 and a fourth limiting portion 314 are provided on the inner wall of the center gear 31 to limit the second limiting portion 421 provided on the connecting pipe 42 and the first limiting portion provided on the pipe body 51 between the third limiting portion 312 and the fourth limiting portion 314, thereby limiting the relative position of the pipe body 51 and the connecting pipe 42 in the vertical direction, and the center gear 31 itself can limit the relative position of the pipe body 51 and the connecting pipe 42 in the horizontal direction, so that the pipe body 51 can only rotate relative to the connecting pipe 42, thereby achieving the effect of installing the main spray arm 1 on the spray arm support 4.

[0050] Optionally, one of the positioning protrusions 313 and the positioning grooves 422 is also provided on the inner wall of the center gear 31, and the other of the positioning protrusions 313 and the positioning grooves 422 is also provided on the connecting pipe 42. The positioning protrusion 313 is located in the positioning groove 422, thereby realizing the positioning between the center gear 31 and the spray arm support 4.

[0051] Optionally, the positioning groove 422 is disposed on the outer side of the second limiting portion 421 , and the positioning protrusion 313 is disposed on the upper side of the third limiting portion 312 , so as to further simplify the structure.

[0052] Optionally, at least two second limiting portions 421 and third limiting portions 312 are provided, at least one second limiting portion 421 is provided with a positioning groove 422, and at least one third limiting portion 312 is provided with a positioning protrusion 313. By providing at least two second limiting portions 421 and third limiting portions 312, the limiting stability is ensured.

[0053] Optionally, the inner side surface of the positioning groove 422 and the outer side surface of the positioning protrusion 313 are both arc-shaped surfaces, so that the positioning protrusion 313 can slide into the positioning groove 422 more smoothly. During specific installation, the spray arm connecting pipe 5 is first installed in the water inlet hole 10, and then the central gear 31 is sleeved on the outside of the spray arm connecting pipe 5, and then the connecting pipe 42 is extended into the central gear 31, and the central gear 31 is rotated. When the positioning protrusion 313 slides into the positioning groove 422, it means that the third limiting portion 312 is located directly below the second limiting portion 421, and the assembly is in place at this time.

[0054] Optionally, a fifth limiting portion 53 is further provided on the outer side of the upper part of the spray arm connecting pipe 5, and a sixth limiting portion 11 is provided on the inner wall of the water inlet hole 10, and the fifth limiting portion 53 is located on the upper side of the sixth limiting portion 11. At this time, since the first limiting portion 52 is located on the lower side of the fourth limiting portion 314, the spray arm connecting pipe 5 is limited in the vertical direction, thereby realizing the connection between the spray arm connecting pipe 5 and the main spray arm 1, and the structure is simple.

[0055] Optionally, a second inclined guide surface 112 is provided at one end of the bottom side surface of the fifth limiting portion 53, and the second inclined guide surface 112 is inclined from bottom to top toward the upper side surface of the fifth limiting portion 53. The sixth limiting portion 11 includes a limiting body portion 111, and a limiting groove corresponding to the fifth limiting portion 53 is opened in the middle of the upper side of the limiting body portion 111. A first inclined guide surface 531 matching the second inclined guide surface 112 is provided on the upper side surface of one end of the limiting body portion 111. The inclination direction of the first inclined guide surface 531 is the same as the inclination direction of the second inclined guide surface 112, so that the second inclined guide surface 112 of the fifth limiting portion 53 can slide into the limiting groove along the first inclined guide surface 531, which is convenient for assembly and can prevent the fifth limiting portion 53 from being easily displaced, thereby ensuring that the spray arm connecting pipe 5 will not move easily during the subsequent installation of the center gear 31 and the spray arm support 4, thereby improving the assembly efficiency.

[0056] Optionally, a pair of handles 316 are arranged opposite to each other on the peripheral side of the central gear 31, so that the operator can hold the handles 316 to rotate the central gear 31, so that the positioning protrusion 313 is inserted into the positioning groove 422, and the central gear 31 is installed in place.

[0057] Optionally, a first marking portion 315 is provided on the lower side of the center gear 31, and a second marking portion 12 corresponding to the first marking portion 315 is provided on the lower side of the main spray arm 1. During installation, the first marking portion 315 is aligned with the second marking portion 12, so as to quickly determine the installation direction of the center gear 31 and ensure that the front and back sides of the center gear 31 are installed accurately.

[0058] Optionally, a third marking portion 317 is provided on the lower side of the center gear 31, and a fourth marking portion 321 corresponding to the third marking portion 317 is provided on the lower side of the planetary gear 32. When installing the planetary gear 32, the third marking portion 317 is aligned with the fourth marking portion 321, so that the planetary gear 32 can be installed on one side of the center gear 31 according to a preset position.

[0059] Optionally, two planetary spray arms 2 and two planetary gears 32 are provided, and a planetary spray arm 2 is provided at each of the two opposite ends of the main spray arm 1. The lower side surface of the central gear 31 is also provided with a fifth marking portion 318 arranged opposite to the third marking portion 317. One planetary gear 32 is arranged on one side of the central gear 31, and the fourth marking portion 321 is arranged on the planetary gear 32. The lower side surface of the other planetary gear 32 is provided with a sixth marking portion 322 corresponding to the fifth marking portion 318. When installing the two planetary gears 32, the third marking portion 317 is aligned with the fourth marking portion 321, and the fifth marking portion 318 is aligned with the sixth marking portion 322, so that the two planetary gears 32 are installed on the side of the central gear 31 according to the preset position.

[0060] Another aspect of the utility model provides a dishwasher, comprising the above-mentioned spray arm assembly.

[0061] The above are only some embodiments of the present invention. For those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A spray arm assembly, characterized in that: include: A main spray arm (1) is provided with a water inlet hole (10); A planetary spray arm (2) mounted on the main spray arm (1); A spray arm connecting pipe (5), the upper portion of which is connected to the water inlet hole (10); A spray arm support (4) is sleeved on the outer side of the lower part of the spray arm connecting pipe (5); The gear transmission assembly comprises a central gear (31), a planetary gear (32) and a transmission rod (33); the planetary gear (32) is meshed and transmission-connected with the central gear (31); one end of the transmission rod (33) is connected to the planetary gear (32) and the other end is connected to the planetary spray arm (2); the central gear (31) is sleeved and fixed on the outside of the spray arm support (4); the spray arm support (4) and the main spray arm (1) are connected via the central gear (31).

2. The spray arm assembly according to claim 1, characterized in that: The spray arm connecting pipe (5) comprises a pipe body (51) and a first limiting portion (52) arranged on the outside of the pipe body (51); the spray arm support (4) comprises a base (41) and a connecting pipe (42) arranged on the base (41); the connecting pipe (42) is sleeved on the outside of the pipe body (51); a second limiting portion (421) is arranged on the outside of the upper part of the connecting pipe (42); a third limiting portion (312) and a fourth limiting portion (314) are arranged on the inner wall of the central gear (31); the third limiting portion (312) is located at the lower side of the second limiting portion (421); and the first limiting portion (52) is located between the lower side of the fourth limiting portion (314) and the upper side of the second limiting portion (421).

3. The spray arm assembly according to claim 2, characterized in that: One of the positioning protrusion (313) and the positioning groove (422) is also provided on the inner wall of the central gear (31), and the other of the positioning protrusion (313) and the positioning groove (422) is also provided on the connecting tube (42), and the positioning protrusion (313) is located in the positioning groove (422).

4. The spray arm assembly according to claim 3, characterized in that: The positioning groove (422) is arranged on the outer side of the second limiting portion (421), and the positioning protrusion (313) is arranged on the upper side of the third limiting portion (312).

5. The spray arm assembly according to claim 4, characterized in that: At least two of the second limiting portions (421) and the third limiting portions (312) are provided, at least one of the second limiting portions (421) is provided with the positioning groove (422), and at least one of the third limiting portions (312) is provided with the positioning protrusion (313).

6. The spray arm assembly according to claim 3, characterized in that: The inner side surface of the positioning groove (422) and the outer side surface of the positioning protrusion (313) are both arc-shaped surfaces.

7. The spray arm assembly according to any one of claims 1 to 6, characterized in that: A fifth limiting portion (53) is also provided on the outer side of the upper portion of the spray arm connecting pipe (5), a sixth limiting portion (11) is provided on the inner wall of the water inlet hole (10), and the fifth limiting portion (53) is located on the upper side of the sixth limiting portion (11).

8. The spray arm assembly according to claim 7, characterized in that: A first inclined guide surface (531) is provided at one end of the bottom side surface of the fifth limiting portion (53), and the first inclined guide surface (531) is inclined from bottom to top toward the upper side surface of the fifth limiting portion (53). The sixth limiting portion (11) includes a limiting body portion (111), and a limiting groove (110) corresponding to the fifth limiting portion (53) is provided in the middle of the upper side of the limiting body portion (111), and a second inclined guide surface (112) matching the first inclined guide surface (531) is provided on the upper side surface of one end of the limiting body portion (111), and the inclination direction of the second inclined guide surface (112) is the same as the inclination direction of the first inclined guide surface (531).

9. The spray arm assembly according to any one of claims 1 to 6, characterized in that: A pair of handles (316) arranged opposite to each other are arranged on the circumferential side of the central gear (31).

10. The spray arm assembly according to any one of claims 1 to 6, characterized in that: The lower side surface of the central gear (31) is provided with a first marking portion (315), and the lower side surface of the main spray arm (1) is provided with a second marking portion (12) corresponding to the first marking portion (315).

11. The spray arm assembly according to any one of claims 1 to 6, characterized in that: A third marking portion (317) is provided on the lower side surface of the central gear (31), and a fourth marking portion (321) corresponding to the third marking portion (317) is provided on the lower side surface of the planetary gear (32).

12. The spray arm assembly according to claim 11, characterized in that Two of the planetary spray arms (2) and the planetary gears (32) are provided, one of the planetary spray arms (2) is provided at each of the two opposite ends of the main spray arm (1), the lower side surface of the central gear (31) is also provided with a fifth marking portion (318) arranged opposite to the third marking portion (317), one of the planetary gears (32) is provided on one side of the central gear (31), and the fourth marking portion (321) is provided on the planetary gear (32), and the lower side surface of the other planetary gear (32) is provided with a sixth marking portion (322) corresponding to the fifth marking portion (318).

13. A dishwasher comprising the spray arm assembly according to any one of claims 1 to 12.

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