Spraying arm structure of dish washing machine

Abstract

The utility model relates to the technical field of dish washing machine equipment, in particular to a spraying arm structure of a dish washing machine, which comprises a washing arm connecting seat and a rinsing arm, a connecting component is arranged on the washing arm connecting seat, the rinsing arm is rotatably connected to the connecting component, the connecting component is communicated with the washing arm connecting seat and the rinsing arm, and the washing arm connecting seat is connected with the rinsing arm. At least one bearing is installed between the rinsing arm and the connecting assembly, water can enter the rinsing arm from the washing arm connecting base and then can enter the rinsing arm through the connecting assembly, the rinsing arm can be pushed to rotate through recoil force of sprayed water flow, the bearing is arranged between the rinsing arm and the connecting assembly, and the rinsing arm can be driven to rotate through the bearing. The friction force between the rinsing arm and the connecting assembly can be reduced, so that the rinsing arm rotates more smoothly.

Description

Technical Field

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

[0002] A dishwasher usually includes a main wash arm, a rinse arm and a wash arm connecting seat. The main wash arm and the rinse arm are both driven to rotate by the recoil force of the water flow ejected from the water outlet nozzle.

[0003] For example, the patent with publication number CN117562471 A discloses a dishwasher washing arm, which includes a connecting assembly, a connecting group including a connecting rod, a threaded rotating sleeve, a first gasket, and a rotating sleeve. The connecting rod is vertically arranged, and a second thread is provided at one end of the connecting rod close to the wash arm connecting seat, and a matching thread is provided at one end of the rinsing water channel close to the rinsing water outlet. The connecting rod extends into the rinsing water channel through the rinsing water outlet and is threadedly assembled with the matching thread through the second thread. The rotating sleeve is sleeved on the end of the connecting rod away from the second thread, and the rotating sleeve is rotatably assembled with the connecting rod so that the rotating sleeve can rotate around the connecting rod. The dishwasher washing arm also includes a rinsing arm, which is in the shape of a long strip. The middle part of the rinsing arm is fixedly assembled with the rotating sleeve, so that the rinsing arm can rotate with the rotating sleeve.

[0004] The rinse arm of the above technology can rotate with the rotating sleeve, and the rotating sleeve is rotatably assembled with the connecting rod, so that the rotating sleeve can rotate around the connecting rod. However, this connection method causes greater friction between the rotating sleeve and the connecting rod, and the rotation of the rinse arm is not smooth enough.

[0005] Therefore, a spray arm structure of a dishwasher is proposed to solve the above technical problems. Utility Model Content

[0006] In order to solve the above technical problems, the purpose of the present utility model is to provide a spray arm structure of a dishwasher, which can reduce the rotational friction between the rinse arm and the connecting assembly, so that the rinse arm rotates more smoothly.

[0007] The technical solution adopted by the utility model to solve the problem is: a spray arm structure of a dishwasher, including a wash arm connecting seat and a rinsing arm, a connecting assembly is provided on the wash arm connecting seat, the rinsing arm is rotatably connected to the connecting assembly, the connecting assembly is communicated with the wash arm connecting seat and the rinsing arm, and at least one bearing is installed between the rinsing arm and the connecting assembly.

[0008] As a further improvement of the above technical solution, the connecting assembly includes a sleeve, a connecting rod and a rotating sleeve, the sleeve is fixedly connected to the wash arm connecting seat, the connecting rod is fixedly connected to the sleeve, the middle part of the rinse arm is fixedly assembled with the rotating sleeve, and the rotating sleeve is rotatably connected to the sleeve; the bearing is arranged between the connecting rod and the rotating sleeve.

[0009] As a further improvement of the above technical solution, a first extension portion extends downward from the bottom of the rotating sleeve, a mounting groove is provided at the lower portion of the connecting rod, and the first extension portion is provided in the mounting groove; a first step is provided on the inner side wall of the mounting groove, and a second step is provided on the inner side wall of the first extension portion, the inner ring of the bearing abuts against and overlaps the inner side wall of the mounting groove on the first step, the outer ring of the bearing abuts against and overlaps the inner side wall of the first extension portion on the second step, and the bearing is pressed between the first extension portion and the mounting groove.

[0010] As a further improvement of the above technical solution, a second extension portion is extended upward from the top of the rotating sleeve, and the nut is also included. The nut is threaded on the connecting rod and is located above the second extension portion. A third step is provided on the inner side wall of the second extension portion, and a fourth step is provided on the inner side of the nut; the inner ring of the bearing abuts against the outer side wall of the connecting rod and overlaps on the fourth step, the outer ring of the bearing abuts against the inner side wall of the second extension portion and overlaps on the third step, and the bearing is pressed between the second extension portion and the nut.

[0011] As a further improvement of the above technical solution, a first annular groove is provided on the outer side wall of the connecting rod, a sealing ring is provided in the first annular groove, and the sealing ring is located between the connecting rod and the rotating sleeve.

[0012] As a further improvement of the above technical solution, a first water inlet channel is provided in the wash arm connecting seat, a water outlet channel connected to the first water inlet channel is provided in the shaft sleeve and the connecting rod, and a first through hole and a second through hole connected to the water outlet channel and the rinsing arm are respectively provided on the connecting rod and the rotating sleeve.

[0013] As a further improvement of the above technical solution, it also includes a main wash arm and a main sleeve, the middle part of the main wash arm is fixedly assembled with the main sleeve, the main sleeve is rotatably connected to the shaft sleeve, the main wash arm is located above the nut, and a second water inlet channel connected to the main wash arm is provided in the wash arm connecting seat; a fifth step is provided on the outer wall of the shaft sleeve, and a sixth step is provided on the top of the nut, and a bearing is pressed between the fifth step and the sixth step, the outer ring of the bearing abuts against the main sleeve, and the inner ring of the bearing abuts against the outer wall of the shaft sleeve.

[0014] As a further improvement of the above technical solution, a second annular groove is provided on the outer side wall of the shaft sleeve, a sealing ring is provided in the second annular groove, and the sealing ring is located between the shaft sleeve and the main sleeve.

[0015] As a further improvement of the above technical solution, a third extension portion extends upward from the top of the main sleeve, a seventh step is provided on the third extension portion, an eighth step is provided at the water outlet end of the second water inlet channel, a bearing is crimped between the seventh step and the eighth step, the outer ring of the bearing abuts against the inner wall of the second water inlet channel, and the inner ring of the bearing abuts against the outer wall of the third extension portion.

[0016] As a further improvement of the above technical solution, a first internal thread is provided in the wash arm connecting seat, a first external thread matching the first internal thread is provided on the sleeve, and the rotation direction of the main wash arm is the same as the screw connection direction of the first internal thread and the first external thread; a second internal thread is provided in the sleeve, and a second external thread matching the second internal thread is provided on the connecting rod, and the rotation direction of the rinse arm is the same as the screw connection direction of the second internal thread and the second external thread.

[0017] The beneficial effects of the present invention are as follows: water can enter from the wash arm connecting seat, and then the water can enter the rinsing arm through the connecting assembly. The rinsing arm can be driven to rotate by the recoil force of the sprayed water flow. By arranging a bearing between the rinsing arm and the connecting assembly, the friction between the rinsing arm and the connecting assembly can be reduced, making the rinsing arm rotate more smoothly. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further explained below with reference to the accompanying drawings and specific implementation methods.

[0019] Figure 1 This is a structural diagram of the spray arm structure of the utility model;

[0020] Figure 2 This is an exploded view of the spray arm structure of the utility model;

[0021] Figure 3 This is the front view of the spray arm structure of the utility model;

[0022] Figure 4 for Figure 3 The cross-sectional view of the AA portion;

[0023] Figure 5 for Figure 4 A partial enlarged view of part A;

[0024] Figure 6 for Figure 4 A partial enlarged view of part B

[0025] Figure 7 for Figure 4 A partial enlarged view of part C.

[0026] In the figure: 1-wash arm connecting seat, 11-first water inlet channel, 12-second water inlet channel, 121-eighth step, 13-first internal thread, 2-rinsing arm, 3-connecting assembly, 31-sleeve, 311-fifth step, 312-second annular groove, 313-first external thread, 314-second internal thread, 32-connecting rod, 321-mounting groove, 322-first step, 323-first annular groove, 324-first through hole, 325-second external thread, 33-rotating sleeve, 331-first extension, 332-second step, 333-second extension, 334-third step, 335-second through hole, 34-water outlet channel, 4-bearing, 5-nut, 51-fourth step, 52-sixth step, 6-sealing ring, 7-main wash arm, 8-main sleeve, 81-third extension, 811-seventh step. DETAILED DESCRIPTION

[0027] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0028] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0029] In the description of this utility model, "several" means one or more, "many" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of "first" and "second" in the description is solely for the purpose of distinguishing technical features and is not to be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0030] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0031] Reference Figures 1 to 7A spray arm structure of a dishwasher includes a wash arm connecting base 1 and a rinse arm 2. The wash arm connecting base 1 is provided with a connecting assembly 3. The rinse arm 2 is rotatably connected to the connecting assembly 3. The connecting assembly 3 is connected to the wash arm connecting base 1 and the rinse arm 2. At least one bearing 4 is installed between the rinse arm 2 and the connecting assembly 3.

[0032] Water can enter from the wash arm connecting seat 1, and then enter the rinsing arm 2 through the connecting component 3. The rinsing arm 2 can be driven to rotate by the recoil force of the sprayed water flow. By arranging a bearing 4 between the rinsing arm 2 and the connecting component 3, the friction between the rinsing arm 2 and the connecting component 3 can be reduced, making the rinsing arm 2 rotate more smoothly.

[0033] In a preferred embodiment, the connecting assembly 3 includes a sleeve 31, a connecting rod 32 and a rotating sleeve 33. The sleeve 31 is fixedly connected to the wash arm connecting seat 1, the connecting rod 32 is fixedly connected to the sleeve 31, the middle part of the rinse arm 2 is fixedly assembled with the rotating sleeve 33, and the rotating sleeve 33 is rotatably connected to the sleeve 31; the bearing 4 is arranged between the connecting rod 32 and the rotating sleeve 33.

[0034] In a preferred embodiment, a first extension portion 331 extends downward from the bottom of the rotating sleeve 33, a mounting groove 321 is provided at the lower portion of the connecting rod 32, and the first extension portion 331 is provided in the mounting groove 321; a first step 322 is provided on the inner side wall of the mounting groove 321, and a second step 332 is provided on the inner side wall of the first extension portion 331. The inner ring of the bearing 4 abuts against and overlaps the inner side wall of the mounting groove 321 on the first step 322, and the outer ring of the bearing 4 abuts against and overlaps the inner side wall of the first extension portion 331 on the second step 332. The bearing 4 is pressed between the first extension portion 331 and the mounting groove 321.

[0035] In a preferred embodiment, a second extension portion 333 extends upward from the top of the rotating sleeve 33, and also includes a nut 5, which is screwed to the connecting rod 32 and located above the second extension portion 333, and a third step 334 is provided on the inner side wall of the second extension portion 333, and a fourth step 51 is provided on the inner side of the nut 5; the inner ring of the bearing 4 abuts against the outer side wall of the connecting rod 32 and overlaps on the fourth step 51, and the outer ring of the bearing 4 abuts against the inner side wall of the second extension portion 333 and overlaps on the third step 334, and the bearing 4 is pressed between the second extension portion 333 and the nut 5.

[0036] In a preferred embodiment, in order to prevent water leakage, a first annular groove 323 is provided on the outer wall of the connecting rod 32 . A sealing ring 6 is provided in the first annular groove 323 . The sealing ring 6 is located between the connecting rod 32 and the rotating sleeve 33 .

[0037] In a preferred embodiment, a first water inlet channel 11 is provided in the wash arm connecting seat 1, a water outlet channel 34 connected to the first water inlet channel 11 is provided in the shaft sleeve 31 and the connecting rod 32, and a first through hole 324 and a second through hole 335 connected to the water outlet channel 34 and the rinsing arm 2 are respectively provided on the connecting rod 32 and the rotating sleeve 33.

[0038] In a preferred embodiment, it also includes a main wash arm 7 and a main sleeve 8. The middle part of the main wash arm 7 is fixedly assembled with the main sleeve 8, and the main sleeve 8 is rotatably connected to the sleeve 31. The main wash arm 7 is located above the nut 5, and a second water inlet channel 12 connected to the main wash arm 7 is provided in the wash arm connecting seat 1; a fifth step 311 is provided on the outer wall of the sleeve 31, and a sixth step 52 is provided on the top of the nut 5. A bearing 4 is pressed between the fifth step 311 and the sixth step 52, and the outer ring of the bearing 4 abuts against the main sleeve 8, and the inner ring of the bearing 4 abuts against the outer wall of the sleeve 31.

[0039] In a preferred embodiment, a second annular groove 312 is provided on the outer wall of the shaft sleeve 31 , a sealing ring 6 is provided in the second annular groove 312 , and the sealing ring 6 is located between the shaft sleeve 31 and the main sleeve 8 .

[0040] In a preferred embodiment, a third extension portion 81 extends upward from the top of the main sleeve 8, a seventh step 811 is provided on the third extension portion 81, an eighth step 121 is provided at the water outlet end of the second water inlet channel 12, and a bearing 4 is crimped between the seventh step 811 and the eighth step 121, the outer ring of the bearing 4 abuts against the inner wall of the second water inlet channel 12, and the inner ring of the bearing 4 abuts against the outer wall of the third extension portion 81.

[0041] In a preferred embodiment, a first internal thread 13 is provided in the wash arm connecting seat 1, and a first external thread 313 matching the first internal thread 13 is provided on the sleeve 31. The rotation direction of the main wash arm 7 is the same as the screw connection direction of the first internal thread 13 and the first external thread 313; a second internal thread 314 is provided in the sleeve 31, and a second external thread 325 matching the second internal thread 314 is provided on the connecting rod 32. The rotation direction of the rinse arm 2 is the same as the screw connection direction of the second internal thread 314 and the second external thread 325.

[0042] The above are only preferred embodiments of the present invention and do not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention specification and drawings under the utility model concept, or directly or indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A spray arm structure of a dishwasher, comprising a wash arm connecting seat (1) and a rinse arm (2), wherein a connecting assembly (3) is provided on the wash arm connecting seat (1), the rinse arm (2) is rotatably connected to the connecting assembly (3), and the connecting assembly (3) is connected to the wash arm connecting seat (1) and the rinse arm (2), characterized in that: At least one bearing (4) is installed between the rinsing arm (2) and the connecting assembly (3).

2. The spray arm structure of a dishwasher according to claim 1, characterized in that: The connecting assembly (3) comprises a shaft sleeve (31), a connecting rod (32) and a rotating sleeve (33); the shaft sleeve (31) is fixedly connected to the wash arm connecting seat (1); the connecting rod (32) is fixedly connected to the shaft sleeve (31); the middle part of the rinse arm (2) is fixedly assembled with the rotating sleeve (33); and the rotating sleeve (33) is rotatably connected to the shaft sleeve (31); The bearing (4) is arranged between the connecting rod (32) and the rotating sleeve (33).

3. The spray arm structure of a dishwasher according to claim 2, characterized in that: A first extension portion (331) extends downward from the bottom of the rotating sleeve (33), a mounting groove (321) is provided at the lower portion of the connecting rod (32), and the first extension portion (331) is disposed in the mounting groove (321); A first step (322) is provided on the inner side wall of the mounting groove (321), a second step (332) is provided on the inner side wall of the first extension portion (331), the inner ring of the bearing (4) abuts against the inner side wall of the mounting groove (321) and overlaps on the first step (322), the outer ring of the bearing (4) abuts against the inner side wall of the first extension portion (331) and overlaps on the second step (332), and the bearing (4) is pressed between the first extension portion (331) and the mounting groove (321).

4. The spray arm structure of a dishwasher according to claim 2, characterized in that: The top of the rotating sleeve (33) is upwardly extended with a second extension portion (333), and further comprises a nut (5), wherein the nut (5) is screwed to the connecting rod (32) and is located above the second extension portion (333), a third step (334) is provided on the inner side wall of the second extension portion (333), and a fourth step (51) is provided on the inner side of the nut (5); The inner ring of the bearing (4) abuts against the outer side wall of the connecting rod (32) and overlaps on the fourth step (51), the outer ring of the bearing (4) abuts against the inner side wall of the second extension portion (333) and overlaps on the third step (334), and the bearing (4) is pressed between the second extension portion (333) and the nut (5).

5. A spray arm structure for a dishwasher according to claim 3 or 4, characterized in that: A first annular groove (323) is provided on the outer side wall of the connecting rod (32), a sealing ring (6) is provided in the first annular groove (323), and the sealing ring (6) is located between the connecting rod (32) and the rotating sleeve (33).

6. The spray arm structure of a dishwasher according to claim 5, characterized in that: A first water inlet channel (11) is provided in the wash arm connecting seat (1); a water outlet channel (34) communicating with the first water inlet channel (11) is provided in the shaft sleeve (31) and the connecting rod (32); and a first through hole (324) and a second through hole (335) communicating with the water outlet channel (34) and the rinse arm (2) are respectively provided on the connecting rod (32) and the rotating sleeve (33).

7. The spray arm structure of a dishwasher according to claim 6, characterized in that: It also includes a main wash arm (7) and a main sleeve (8), wherein the middle portion of the main wash arm (7) is fixedly assembled with the main sleeve (8), and the main sleeve (8) is rotatably connected to the shaft sleeve (31). The main wash arm (7) is located above the nut (5), and a second water inlet channel (12) connected to the main wash arm (7) is provided in the wash arm connecting seat (1); A fifth step (311) is provided on the outer wall of the sleeve (31), a sixth step (52) is provided on the top of the nut (5), a bearing (4) is pressed between the fifth step (311) and the sixth step (52), the outer ring of the bearing (4) abuts against the main sleeve (8), and the inner ring of the bearing (4) abuts against the outer wall of the sleeve (31).

8. The spray arm structure of a dishwasher according to claim 7, characterized in that: A second annular groove (312) is provided on the outer side wall of the shaft sleeve (31), a sealing ring (6) is provided in the second annular groove (312), and the sealing ring (6) is located between the shaft sleeve (31) and the main sleeve (8).

9. The spray arm structure of a dishwasher according to claim 7, characterized in that: A third extension portion (81) extends upward from the top of the main sleeve (8), a seventh step (811) is provided on the third extension portion (81), an eighth step (121) is provided at the water outlet end of the second water inlet channel (12), a bearing (4) is pressed between the seventh step (811) and the eighth step (121), the outer ring of the bearing (4) abuts against the inner wall of the second water inlet channel (12), and the inner ring of the bearing (4) abuts against the outer wall of the third extension portion (81).

10. The spray arm structure of a dishwasher according to claim 9, characterized in that: The wash arm connecting seat (1) is provided with a first internal thread (13), the shaft sleeve (31) is provided with a first external thread (313) matching the first internal thread (13), and the rotation direction of the main wash arm (7) is the same as the screw connection direction of the first internal thread (13) and the first external thread (313); A second internal thread (314) is provided in the shaft sleeve (31), a second external thread (325) matching the second internal thread (314) is provided on the connecting rod (32), and the rotation direction of the rinsing arm (2) is the same as the screw connection direction of the second internal thread (314) and the second external thread (325).

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