Mounting structure of cleaning arm of dish-washing machine

Abstract

The utility model relates to the technical field of dishwashers, in particular to an installation structure of a washing arm of a dishwasher, which comprises a three-way connecting seat and a first washing arm, a first sleeve is arranged on the first washing arm, the first washing arm is rotatably connected with the three-way connecting seat through the first sleeve, and a bearing is installed between the first sleeve and the three-way connecting seat. The bearing is arranged between the first sleeve and the three-way connecting seat, and the first washing arm is rotationally connected with the three-way connecting seat through the bearing, so that the friction between the first washing arm and the three-way connecting seat is reduced, and the rotating smoothness of the first washing arm is improved.

Description

Technical Field

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

[0002] The patent with publication number CN117562471 A discloses a washing arm of a dishwasher, on which a main wash arm shaft sleeve is arranged, the main wash arm shaft sleeve is roughly cylindrical, the main wash arm shaft sleeve is arranged vertically, the main wash arm shaft sleeve is sleeved on one end of the rinse water channel wall close to the rinse water outlet, and the main wash arm shaft sleeve is rotatably assembled with the rinse water channel wall, and the main wash arm shaft sleeve can rotate around the rinse water channel, so that the rinse water channel wall becomes the inner rotating shaft of the main wash arm.

[0003] The main wash arm shaft sleeve of the above technology is directly sleeved on the wall of the rinse water channel to achieve rotation. However, this connection method causes greater friction between the wash arm and the wash arm three-way seat, and the wash arm does not rotate smoothly enough. Utility Model Content

[0004] In order to solve the above technical problems, the purpose of the utility model is to provide a mounting structure for a washing arm of a dishwasher.

[0005] The technical solution adopted by the utility model to solve the problem is:

[0006] A mounting structure for a washing arm of a dishwasher comprises a three-way connection seat and a first washing arm, wherein the first washing arm is provided with a first sleeve, the first washing arm is rotatably connected to the three-way connection seat through the first sleeve, and a bearing is installed between the first sleeve and the three-way connection seat.

[0007] As a further improvement of the above technical solution, the upper end of the three-way connecting seat has a water outlet, the lower edge of the first sleeve extends downward to form an extension portion, and the extension portion passes through the water outlet and is inserted into the three-way connecting seat; the outer ring of the bearing is fixedly connected to the inner wall of the water outlet, and the inner ring of the bearing is fixedly connected to the outer wall of the extension portion.

[0008] As a further improvement of the above technical solution, the upper end of the three-way connecting seat is provided with a first step extending toward the center, and the vertical projection of the first step covers the bearing.

[0009] As a further improvement of the above technical solution, a second step is provided on the lower side of the first wash arm, the extension portion passes downward through the second step, and the second step surrounds the outer circumference of the extension portion; the second step is located above the first step, and a first gasket is installed between the first step and the second step.

[0010] As a further improvement of the above technical solution, it also includes a connecting rod assembly and a second wash arm, the lower end of the connecting rod assembly is fixedly connected to the three-way connecting seat, and the first wash arm and the second wash arm are both rotatably connected to the connecting rod assembly.

[0011] As a further improvement of the above technical solution, the connecting rod assembly includes a first connecting rod, and a third step and a fourth step are provided at the upper end of the first connecting rod, the third step is provided below the fourth step, and the diameter of the third step is larger than the diameter of the fourth step; a necking is provided at the upper end of the first sleeve, and the upper end of the first sleeve overlaps above the third step; an installation groove is provided above the fourth step, and a retaining ring is clamped and installed in the installation groove, the diameter of the retaining ring is larger than the diameter of the fourth step, and the retaining ring abuts against the upper end of the first sleeve.

[0012] As a further improvement of the above technical solution, the connecting rod assembly includes a second connecting rod, the lower end of the second connecting rod is provided with a second external thread, the upper end of the first connecting rod is provided with a second internal thread, and the second external thread cooperates with the second internal thread; a threaded sleeve is screwed on the second external thread, the threaded sleeve is screwed on the top of the first connecting rod, and the threaded sleeve abuts against the top of the retaining ring.

[0013] As a further improvement of the above technical solution, a first sealing ring is crimped between the threaded sleeve and the clamping ring.

[0014] As a further improvement of the above technical solution, a second sleeve is provided on the second washing arm, the second sleeve is rotatably connected to the outer periphery of the second connecting rod, and the lower end of the second sleeve abuts against the top of the threaded sleeve; a second sealing ring is crimped between the second sleeve and the threaded sleeve.

[0015] The beneficial effect of the utility model is that the utility model installs a bearing between the first sleeve and the three-way connecting seat, and the first wash arm is rotatably connected to the three-way connecting seat through the bearing, thereby reducing the friction between the first wash arm and the three-way connecting seat and improving the rotation smoothness of the first wash arm. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further explained below in conjunction with the accompanying drawings and specific implementation methods.

[0017] Figure 1 It is a schematic diagram of the structure decomposition of the utility model;

[0018] Figure 2 It is a structural sectional view of the utility model;

[0019] Figure 3 yes Figure 2A schematic diagram of the structure enlargement at the center A;

[0020] Figure 4 yes Figure 1 A schematic diagram of the structure enlarged at B in the middle;

[0021] In the figure: 1- three-way connecting seat, 11- water outlet, 12- first step, 13- first internal thread, 2- first wash arm, 21- first sleeve, 211- extension portion, 22- second step, 23- necking, 3- second wash arm, 31- second sleeve, 4- bearing, 51- first connecting rod, 511- first external thread, 512- third step, 513- fourth step, 514- groove, 52- second connecting rod, 521- second external thread, 6- first gasket, 7- retaining ring, 81- first sealing ring, 82- second sealing ring, 9- threaded sleeve. DETAILED DESCRIPTION

[0022] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model 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 the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0023] In the description of the present invention, it should be understood that descriptions involving orientation, 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, and 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, and therefore cannot be understood as a limitation on the present invention.

[0024] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. 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.

[0025] Reference Figures 1 to 4 A washing arm installation structure for a dishwasher comprises a three-way connection seat 1 and a first washing arm 2. The upper end of the three-way connection seat 1 has a water outlet 11. The middle of the first washing arm 2 is provided with a first sleeve 21. The first washing arm 2 is rotatably connected to the three-way connection seat 1 through the first sleeve 21. A bearing 4 is installed between the first sleeve 21 and the three-way connection seat 1. By installing the bearing 4 between the first sleeve 21 and the three-way connection seat 1, the rotation smoothness of the first washing arm 2 is improved.

[0026] Specifically, in some embodiments, the lower edge of the first sleeve 21 extends downward to form an extension portion 211, the diameter of the extension portion 211 is smaller than the diameter of the water outlet 11, and the extension portion 211 passes through the water outlet 11 and is inserted into the three-way connector 1; the outer ring of the bearing 4 is fixedly connected to the inner wall of the water outlet 11, and the inner ring of the bearing 4 is fixedly connected to the outer wall of the extension portion 211.

[0027] Further, in a preferred embodiment, the upper end of the three-way connector 1 is provided with an annular first step 12 extending toward the center, and the vertical projection of the first step 12 partially covers the bearing 4. The function of the first step 12 is to prevent the bearing 4 from disengaging and improve the assembly stability of the rotating structure.

[0028] Furthermore, in a preferred embodiment, a second step 22 is provided on the lower side of the first wash arm 2, and the extension portion 211 passes downward through the second step 22, and the second step 22 surrounds the outer periphery of the extension portion 211; the second step 22 is located above the first step 12, and a first gasket 6 is installed between the first step 12 and the second step 22, and the upper end surface of the first gasket 6 is a smooth surface, which further improves the rotation smoothness of the first wash arm 2.

[0029] Specifically, in some embodiments, it also includes a connecting rod assembly and a second wash arm 3, the lower end of the connecting rod assembly is provided with a first external thread 511, the middle part of the three-way connecting seat 1 is provided with a first internal thread 13 corresponding to the first external thread 511, and the first external thread 511 cooperates with the first internal thread 13; the first wash arm 2 and the second wash arm 3 are both rotatably connected to the connecting rod assembly, and the second wash arm 3 is located above the first wash arm 2.

[0030] Specifically, in some embodiments, the connecting rod assembly includes a first connecting rod 51, and the upper end of the first connecting rod 51 is provided with a third step 512 and a fourth step 513, the third step 512 is arranged below the fourth step 513, and the diameter of the third step 512 is greater than the diameter of the fourth step 513; the upper end of the first sleeve 21 is provided with a reduction 23, the diameter of the reduction 23 is greater than or equal to the diameter of the fourth step 513, and the diameter of the reduction 23 is smaller than the diameter of the third step 512; the upper end of the first sleeve 21 overlaps above the third step 512; an installation groove is provided above the fourth step 513, and a snap ring 7 is clamped and installed in the installation groove, the diameter of the snap ring 7 is greater than the diameter of the fourth step 513, and the snap ring 7 abuts against the upper end of the fourth sleeve, and the snap ring 7 is used to prevent the first wash arm 2 from moving up.

[0031] Specifically, in some embodiments, the connecting rod assembly includes a second connecting rod 52, the lower end of the second connecting rod 52 is provided with a second external thread 521, the upper end of the first connecting rod 51 is provided with a second internal thread, and the second external thread 521 cooperates with the second internal thread; a threaded sleeve 9 is screwed on the second external thread 521, the threaded sleeve 9 is screwed on the top of the first connecting rod 51, and the threaded sleeve 9 abuts on the top of the clamping ring 7. By providing the threaded sleeve 9, the threaded sleeve 9 abuts on the top of the clamping ring 7, and the first wash arm 2 is further prevented from moving up.

[0032] Furthermore, in a preferred embodiment, a first sealing ring 81 is crimped between the threaded sleeve 9 and the clamping ring 7 , and the first sealing ring 81 improves the sealing performance of the connecting rod assembly.

[0033] Furthermore, in a preferred embodiment, a second sleeve 31 is provided on the second wash arm 3, and the second sleeve 31 is rotatably connected to the outer periphery of the second connecting rod 52, and the lower end of the second sleeve 31 abuts against the top of the threaded sleeve 9; a second sealing ring 82 is crimped between the second sleeve 31 and the threaded sleeve 9, and the second sealing ring 82 further improves the sealing performance of the connecting rod assembly.

[0034] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made 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 washing arm mounting structure for a dishwasher, comprising a three-way connection seat (1) and a first washing arm (2), wherein the first washing arm (2) is provided with a first sleeve (21), and the first washing arm (2) is rotatably connected to the three-way connection seat (1) through the first sleeve (21), characterized in that: A bearing (4) is installed between the first sleeve (21) and the three-way connecting seat (1).

2. The installation structure of a dishwasher cleaning arm according to claim 1, characterized in that: The upper end of the three-way connecting seat (1) is provided with a water outlet (11), the lower edge of the first sleeve (21) extends downward to form an extension portion (211), and the extension portion (211) passes through the water outlet (11) and is inserted into the three-way connecting seat (1); The outer ring of the bearing (4) is fixedly connected to the inner wall of the water outlet (11), and the inner ring of the bearing (4) is fixedly connected to the outer wall of the extension portion (211).

3. The installation structure of a dishwasher cleaning arm according to claim 2, characterized in that: The upper end of the three-way connecting seat (1) is provided with a first step (12) extending toward the center, and the vertical projection of the first step (12) covers the bearing (4).

4. The installation structure of a dishwasher cleaning arm according to claim 3, characterized in that: A second step (22) is provided on the lower side of the first washing arm (2), the extension portion (211) passes downward through the second step (22), and the second step (22) surrounds the outer periphery of the extension portion (211); The second step (22) is located above the first step (12), and a first gasket (6) is installed between the first step (12) and the second step (22).

5. The installation structure of a dishwasher cleaning arm according to claim 1, characterized in that: It also comprises a connecting rod assembly and a second wash arm (3), wherein the lower end of the connecting rod assembly is fixedly connected to the three-way connecting seat (1), and the first wash arm (2) and the second wash arm (3) are both rotatably connected to the connecting rod assembly.

6. The installation structure of a dishwasher cleaning arm according to claim 5, characterized in that: The connecting rod assembly comprises a first connecting rod (51), the upper end of the first connecting rod (51) is provided with a third step (512) and a fourth step (513), the third step (512) is provided below the fourth step (513), and the diameter of the third step (512) is greater than the diameter of the fourth step (513); The upper end of the first sleeve (21) is provided with a constriction (23), and the upper end of the first sleeve (21) overlaps above the third step (512); An installation groove is provided above the fourth step (513), and a snap ring (7) is mounted in the installation groove. The diameter of the snap ring (7) is larger than the diameter of the fourth step (513), and the snap ring (7) abuts against the upper end of the first sleeve (21).

7. The installation structure of a dishwasher cleaning arm according to claim 6, characterized in that: The connecting rod assembly comprises a second connecting rod (52), the lower end of the second connecting rod (52) is provided with a second external thread (521), the upper end of the first connecting rod (51) is provided with a second internal thread, and the second external thread (521) cooperates with the second internal thread; A threaded sleeve (9) is threadedly connected to the second external thread (521), the threaded sleeve (9) is threadedly connected to the top of the first connecting rod (51), and the threaded sleeve (9) abuts against the top of the clamping ring (7).

8. The installation structure of a dishwasher cleaning arm according to claim 7, characterized in that: A first sealing ring (81) is crimped between the threaded sleeve (9) and the clamping ring (7).

9. The installation structure of a dishwasher cleaning arm according to claim 7, characterized in that: The second washing arm (3) is provided with a second sleeve (31), the second sleeve (31) is rotatably connected to the outer periphery of the second connecting rod (52), and the lower end of the second sleeve (31) abuts against the upper side of the threaded sleeve (9); A second sealing ring (82) is crimped between the second sleeve (31) and the threaded sleeve (9).

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