Spraying structure for cleaning machine and cleaning machine

Abstract

The present application relates to a kind of spray structure for cleaning machine and cleaning machine, a kind of spray structure for cleaning machine includes spray arm, the outer wall surface of the second wallboard of spray arm is opened with at least three arc grooves in the outer peripheral side of spray hole, moving piece, setting on the outer wall surface of the second wallboard of spray arm, and be arranged to be able to go back and forth along the length direction of the spray arm;Each arc groove corresponds to one movable rod, the outer end of movable rod is provided with the sliding element of sliding fit with corresponding arc groove, the inner end is provided with connecting rod, and each connecting rod is spliced to form water hole;Each movable rod corresponds to a group of transmission assembly, and the power input end of each transmission assembly is connected with moving piece drive, and power output end is respectively connected with corresponding movable rod drive, to drive each movable rod along corresponding arc groove to increase or reduce water hole.Movable rod can be according to actual washing environment, by adjusting the size of water hole to change the lift of water flow or water output.

Description

Technical Field

[0001] This invention belongs to the field of household washing and cleaning technology, specifically relating to a spray structure for a cleaning machine and the cleaning machine itself. Background Technology

[0002] A washing machine is a device that sprays cold or hot water onto dishes to remove dirt and grime adhering to them or cleaning fruits and vegetables. Existing spray-type washing machines typically achieve spraying in all directions by rotating spray arms.

[0003] The current spray structure, as disclosed in the applicant's earlier Chinese utility model patent "Spray Arm and Cleaning Machine Containing the Same" (patent number ZL202021185060.2, authorization announcement number CN212853392U), has a spray arm located at the bottom of the cleaning machine. The spray arm includes a spray arm body, and the upper surface of the spray arm body is provided with a plurality of spray holes.

[0004] The spray hole diameter in the aforementioned patent is fixed and the shape of the hole cannot be changed. As a result, only a fixed type of spray water column can be produced, resulting in a single cleaning mode and limited cleaning effect.

[0005] Therefore, further improvements are needed to the existing spray structure. Summary of the Invention

[0006] The first technical problem to be solved by the present invention is to provide a spray structure for a cleaning machine that changes the water spray head by changing the size of the water outlet, in light of the existing technology.

[0007] The second technical problem to be solved by the present invention is to provide a cleaning machine having the above-mentioned spray structure, in view of the current status of the prior art.

[0008] The technical solution adopted by the present invention to solve the first technical problem mentioned above is: a spray structure for a cleaning machine, comprising:

[0009] A spray arm has a hollow interior forming a flow channel extending along its length. The first wall panel of the spray arm has a water inlet connected to the flow channel, and the spray arm has spray holes on a second wall panel opposite to the first wall panel.

[0010] The feature is that the outer wall surface of the second wall plate of the spray arm has at least three arc-shaped grooves arranged radially around the spray hole on the outer periphery of the spray hole, and the spray structure further includes:

[0011] A movable component is disposed on the outer wall surface of the second wall panel of the spray arm and is arranged to move back and forth along the length direction of the spray arm.

[0012] Each arc-shaped groove corresponds to a movable rod. The outer end of the movable rod is provided with a sliding component that slides with the corresponding arc-shaped groove. The inner end of the movable rod is provided with a connecting rod. The connecting rods are spliced ​​together to form a water flow hole.

[0013] Each movable rod corresponds to a set of transmission components. The power input end of each transmission component is connected to the drive of the moving part, and the power output end of each transmission component is connected to the corresponding movable rod drive, so as to drive each movable rod to move along the corresponding arc groove to increase or decrease the water flow hole.

[0014] To achieve linkage between the transmission component and the moving part, the system also includes an annular gear ring and a first rack. A mounting base is provided on the outer wall surface of the second wall plate of the spray arm. The mounting base has a clearance opening at the position corresponding to the spray hole. The annular gear ring is embedded in the clearance opening. The first rack is disposed on the moving part and extends along the length direction of the spray arm, and meshes with the annular gear ring. The transmission component is located between the mounting base and the second wall plate of the spray arm, and is linked with the annular gear ring.

[0015] There are various structural forms of transmission components, but preferably, the transmission component includes a gear, a first transmission rod, and a second transmission rod. The gear is mounted on the mounting base via a mounting shaft and meshes with the annular gear ring. The first end of the first transmission rod is fixed to the mounting shaft and rotates with the gear. The second end of the first transmission rod is rotatably connected to the first end of the second transmission rod. The second end of the second transmission rod is rotatably connected to the outer end of the movable rod via a connecting shaft. The connecting shaft is coaxially arranged with the sliding member.

[0016] The connecting rod can have various shapes, including V-shape and arc shape, but preferably, it is V-shaped and includes a first rod section and a second rod section. The inner end of the movable rod is connected to the second rod section, and the free end of the first rod section of each connecting rod is always in contact with the inner surface of the second rod section of its adjacent connecting rod, thereby forming the water flow hole. Thus, as the first rod section moves with the movable rod, the position of its free end relative to the inner surface of the second rod section changes, altering the shape of the water flow hole and thus changing the water spray pattern, thereby increasing the cleaning range.

[0017] There can be three, four, or more arc-shaped grooves, but preferably, there are four arc-shaped grooves.

[0018] Preferably, the polar coordinate equation of any point on the arc groove satisfies: ρ = 3.5θ, where θ is the polar coordinate angle variable of any point.

[0019] In order to enable the installation of the annular gear ring and the mounting base, an annular groove is provided on the outer peripheral wall of the annular gear ring near the center, so that the periphery of the clearance opening is located therein.

[0020] To protect the movable rod and transmission assembly, the mounting base and the outer wall of the second wall plate of the spray arm form a mounting cavity, and the movable rod and transmission assembly are both located in the mounting cavity.

[0021] In order to guide the movement of the moving part, the outer wall surface of the mounting base and the moving part are provided with guide strips and guide grooves for guiding cooperation. The guide strips and guide grooves extend along the length direction of the spray arm. One of the guide strips and guide grooves is provided on the mounting base and the other is provided on the moving part.

[0022] The guide bar can be located on the mounting base or on the moving part, but preferably, the guide bar is disposed on the outer wall surface of the mounting base, and the guide groove is located on the moving part.

[0023] The mounting base can be formed on the spray arm or it can be detachable. However, from the perspective of facilitating the cleaning of the transmission components and moving rods, it is preferable that the mounting base be detachably mounted on the second wall panel of the spray arm.

[0024] There are several ways to make the mounting base and the second wall panel detachable, such as by screw connection or by snap-fit ​​connection. However, from the perspective of convenient disassembly and assembly, it is preferable that the mounting base is installed on the second wall panel by snap-fit ​​structure.

[0025] There are various structural forms of the snap-fit ​​structure. It can be a snap-fit ​​method in which the first snap-fit ​​and the second snap-fit ​​are engaged, or a snap-fit ​​and the slot are engaged. However, preferably, the snap-fit ​​structure includes a snap-fit ​​part and a slot that engage with each other. The snap-fit ​​part is disposed on the mounting base. The second wall panel of the spray arm is provided with an upwardly extending part at the position corresponding to the snap-fit ​​part. The extension part has a slot for the snap-fit ​​part to engage.

[0026] The second wall panel can be located above or below the first wall panel, but preferably, the second wall panel is located above the first wall panel.

[0027] To automatically move the movable component as the spray arm rotates, an elastic element is included to ensure that the movable component always tends to move inward toward the spray holes along its direction of movement. This elastic element acts on the movable component. Thus, with the presence of the elastic element, the amount of movement of the movable component can be adjusted by centrifugal force according to the rotation speed of the spray arm. Alternatively, a drive mechanism can be used to drive the movement of the movable component.

[0028] There are various structural forms of elastic elements, such as springs or leaf springs. However, preferably, the elastic element includes a spring, and a first support is provided on the outer wall surface of the second wall plate of the spray arm, with the spring located between the first support and the moving part.

[0029] More preferably, the elastic element further includes a tension spring, and a second support is provided on the outer wall surface of the second wall panel. The movable element is partially located between the first support and the second support. The first end of the tension spring is connected to the movable element, and the second end of the tension spring is connected to the second support.

[0030] The technical solution adopted by the present invention to solve the second technical problem mentioned above is: a cleaning machine, including a housing and a spray structure, wherein the housing has a washing chamber inside, and the spray structure is located inside the washing chamber, characterized in that: the spray structure is the aforementioned spray structure.

[0031] Compared with the prior art, the advantages of the present invention are as follows: when the moving part of the spray structure moves along the length of the spray arm, the transmission component drives the movable rod to move along the length of the arc groove, thereby increasing or decreasing the size of the water outlet. Under the condition of constant flow rate, the water head or water output can be changed by adjusting the size of the water outlet according to the actual washing environment. For example, the size of the water outlet can be decreased to increase the head, or the water outlet can be increased to increase the water flow rate and clean the items to be washed at a low position, thereby meeting the different washing needs of users. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the spray structure according to an embodiment of the present invention;

[0033] Figure 2 for Figure 1 A sectional view;

[0034] Figure 3 for Figure 1 A three-dimensional exploded structural diagram of the middle part;

[0035] Figure 4 for Figure 1 A cross-sectional view from another angle;

[0036] Figure 5 This is a three-dimensional exploded view of the moving part, the mounting base, and the annular gear ring.

[0037] Figure 6 This is a schematic diagram of the transmission assembly.

[0038] Figure 7 for Figure 1 Partial structural diagram;

[0039] Figure 8 This is a schematic diagram of a portion of the spray system where the water flow holes are in an enlarged state. Detailed Implementation

[0040] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0041] The cleaning machine in this embodiment includes a housing and a spray structure. The housing has a washing chamber inside, and the spray structure is located inside the washing chamber.

[0042] like Figures 1 to 8 As shown, the spray structure of this embodiment includes a spray arm 1, a movable component 2, a movable rod 3, an annular gear ring 4, a first rack 5, a mounting base 6, an elastic component 7, and a transmission assembly 8. The spray arm 1 is rotatably mounted near the bottom of the washing chamber, and its installation method and rotation form are the same as in the prior art, which will not be described in detail in this embodiment. The interior of the spray arm 1 is hollow, forming a flow channel 10 extending along its length. The first wall plate 11 of the spray arm 1 has a water inlet 110 communicating with the flow channel 10, and the spray arm 1 has spray holes 120 on a second wall plate 12 opposite to the first wall plate 11. In this embodiment, the second wall plate 12 is located above the first wall plate 11, so the second wall plate 12 is the top wall plate of the spray arm 1, and the first wall plate 11 is the bottom wall plate of the spray arm 1.

[0043] like Figure 3 As shown, the outer wall surface of the second wall panel 12 of the spray arm 1 has at least three arc-shaped grooves 121 arranged radially around the spray hole 120 on the outer periphery of the spray hole 120. In this embodiment, there are four arc-shaped grooves 121, which arch outwards. Specifically, the polar coordinate equation of any point on the arc-shaped groove 121 satisfies: ρ = 3.5θ, where θ is the polar coordinate angle variable of any point. Figure 3 As shown, the movable component 2 is disposed on the outer wall surface of the second wall panel 12 of the spray arm 1 and is arranged to move back and forth along the length direction of the spray arm 1. Specifically, a mounting base 6 is provided on the outer wall surface of the second wall panel 12 of the spray arm 1. In this embodiment, the mounting base 6 is detachably mounted on the second wall panel 12 of the spray arm 1 via a snap-fit ​​structure. The aforementioned snap-fit ​​structure includes a snap-fit ​​portion 63 and a slot 141 that engage with each other. The snap-fit ​​portion 63 is disposed on the mounting base 6, and the second wall panel 12 of the spray arm 1 has an upwardly extending extension portion 14 at the position corresponding to the snap-fit ​​portion 63. The extension portion 14 has a slot 141 for the snap-fit ​​portion 63 to snap into. Thus, the mounting base 6 is mounted on the spray arm 1 by the snap-fit ​​portion 63 engaging with the slot 141.

[0044] The aforementioned movable component 2 is disposed on the outer wall surface of the mounting base 6. In this embodiment, as... Figure 3and Figure 5 As shown, a guide strip 62 and a guide groove 22 are matched and fitted between the outer wall surface of the mounting base 6 and the moving part 2. Both the guide strip 62 and the guide groove 22 extend along the length direction of the spray arm 1. One of the guide strip 62 and the guide groove 22 is provided on the mounting base 6, and the other is provided on the moving part 2. Specifically, the guide strip 62 is provided on the outer wall surface of the mounting base 6, and the guide groove 22 is located on the moving part 2. In this way, the moving part 2 is constrained to the mounting base 6 by the guide strip 62 and the guide groove 22.

[0045] like Figures 2 to 5 As shown, the mounting base 6 has a clearance opening 61 at the position corresponding to the spray hole 120. The annular toothed ring 4 is embedded in the clearance opening 61. Specifically, an annular groove 41 is formed near the center of the outer peripheral wall of the annular toothed ring 4, allowing the periphery of the clearance opening 61 to be located therein. The first rack 5 is mounted on the moving member 2 and extends along the length direction of the spray arm 1, and meshes with the annular toothed ring 4. Thus, when the moving member 2 moves along the spray arm 1, the meshing of the first rack 5 and the annular toothed ring 4 drives the annular toothed ring 4 to rotate.

[0046] like Figure 2 As shown, the mounting base 6 and the outer wall of the second wall plate 12 of the spray arm 1 enclose a mounting cavity 60. Each arc-shaped groove 121 corresponds to a movable rod 3 and a set of transmission components 8, and each set of movable rods 3 and transmission components 8 is located within the aforementioned mounting cavity 60. The outer end of the movable rod 3 is provided with a sliding member 32 that slides in cooperation with the corresponding arc-shaped groove 121. Specifically, the sliding member 32 is inserted into the corresponding arc-shaped groove 121 and can move along the arc-shaped groove 121. The inner end of the movable rod 3 is provided with a connecting rod 31, and each connecting rod 31 is spliced ​​together to form a water flow hole 33. In this embodiment, the connecting rod 31 is V-shaped and includes a first rod portion 311 and a second rod portion 312. The inner end of the movable rod 3 is connected to the second rod portion 312. The free end 3111 of the first rod portion 311 of each connecting rod 31 is always in contact with the inner surface 3121 of the second rod portion 312 of its adjacent connecting rod 31, thereby forming the aforementioned water inlet 33. When the free end 3111 of the first rod portion 311 is in contact with the corner of the adjacent connecting rod 31, the water inlet 33 is quadrilateral. When the free end 3111 of the first rod portion 311 is in contact with the adjacent connecting rod 31 away from the corner, the water inlet 33 is octagonal, thereby realizing the change of the shape of the water inlet.

[0047] The power input ends of each of the aforementioned transmission components 8 are driven and connected to the moving part 2, and the power output ends of each of the transmission components 8 are driven and connected to the corresponding movable rods 3, which are used to drive each movable rod 3 to move along the corresponding arc-shaped groove 121 to increase or decrease the size of the water passage hole 33. In this embodiment, the structures of each group of movable rods 3 and transmission components 8 are the same, and the following description uses one group as an example. The aforementioned movable rod 3 is linked with the annular gear ring 4. Specifically, the movable rod 3 is linked with the annular gear ring 4 through the transmission component 8. In this embodiment, as Figure 4 and Figure 6 As shown, the transmission assembly 8 includes a gear 81, a first transmission rod 82, and a second transmission rod 83. The gear 81 is mounted on the mounting base 6 via a mounting shaft 811 and meshes with the ring gear 4. The first end of the first transmission rod 82 is fixed to the mounting shaft 811 and rotates with the gear 81. The second end of the first transmission rod 82 is rotatably connected to the first end of the second transmission rod 83. The second end of the second transmission rod 83 is rotatably connected to the outer end of the movable rod 3 via a connecting shaft 831. The connecting shaft 831 is coaxially arranged with the sliding member 32. In this embodiment, the connecting shaft 831 and the sliding member 32 are a single piece.

[0048] The elastic element 7 acts on the movable element 2, causing the movable element 2 to always have a tendency to move inward along its moving direction toward the spray hole 120. In this embodiment, the movable element 2 has a tendency to move to the left. Figures 1 to 3 As shown, the aforementioned elastic element 7 includes a spring 71 and a tension spring 72. A first support 15 and a second support 16 are provided on the outer wall surface of the second wall plate 12 of the spray arm 1. The movable element 2 is partially located between the first support 15 and the second support 16. The spring 71 is located between the first support 15 and the movable element 2, and the tension spring 72 is located between the second support 16 and the movable element 2. The first end of the tension spring 72 is connected to the movable element 2, and the second end of the tension spring 72 is connected to the second support 16.

[0049] When the cleaning machine is working, the spray arm 1 rotates. At this time, the moving part 2 moves outward under the action of centrifugal force, such as along the first direction A. Since the first rack 5 on the moving part 2 meshes with the ring gear 4, it drives the ring gear 4 to rotate. When the ring gear 4 rotates, since the ring gear 4 meshes with the gear 81, it drives the gear 81 to rotate. The gear 81 drives the first transmission rod 82 to rotate, and then through the transmission of the second transmission rod 83, it drives the sliding part 32 on the movable rod 3 to move outward along the arc groove 121. At this time, the water outlet 33 is enlarged. See Figure 8 As shown, by adjusting the rotation speed of the spray arm, the size of the water flow hole 33 can be continuously changed, that is, different sizes of water flow holes 33 can be obtained, but the center of the water flow hole 33 remains unchanged.

[0050] In the specification and claims of this invention, terms indicating direction, such as "upper," "lower," "left," etc., are used to describe various exemplary structural parts and elements of the invention. However, these terms are used herein merely for illustrative purposes and are determined based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in this invention can be arranged in different orientations, these terms indicating direction are for illustrative purposes only and should not be considered as limiting.

Claims

1. A spray structure for a cleaning machine, comprising: A spray arm (1) has a hollow interior forming a flow channel (10) extending along its length. The first wall plate (11) of the spray arm (1) has an inlet (110) communicating with the flow channel (10), and the spray arm (1) has spray holes (120) on a second wall plate (12) opposite to the first wall plate (11). Its features are, The outer wall surface of the second wall plate (12) of the spray arm (1) has at least three arc-shaped grooves (121) arranged radially around the spray hole (120) on the outer periphery of the spray hole (120). The spray structure also includes: The movable part (2) is disposed on the outer wall surface of the second wall panel (12) of the spray arm (1) and is arranged to move back and forth along the length direction of the spray arm (1); Each arc groove (121) corresponds to a movable rod (3). The outer end of the movable rod (3) is provided with a sliding member (32) that slides with the corresponding arc groove (121). The inner end of the movable rod (3) is provided with a connecting rod (31). Each connecting rod (31) is spliced ​​together to form a water flow hole (33). Each movable rod (3) corresponds to a set of transmission components (8). The power input end of each transmission component (8) is connected to the moving part (2) for driving. The power output end of each transmission component (8) is connected to the corresponding movable rod (3) for driving each movable rod (3) to move along the corresponding arc groove (121) to increase or decrease the water flow hole (33).

2. The spray structure according to claim 1, characterized in that: It also includes an annular toothed ring (4) and a first rack (5). A mounting seat (6) is provided on the outer wall surface of the second wall plate (12) of the spray arm (1). The mounting seat (6) has a clearance opening (61) at the position corresponding to the spray hole (120). The annular toothed ring (4) is embedded in the clearance opening (61). The first rack (5) is provided on the moving part (2) and extends along the length direction of the spray arm (1) and meshes with the annular toothed ring (4). The transmission component (8) is located between the mounting seat (6) and the second wall plate (12) of the spray arm (1) and is linked with the annular toothed ring (4).

3. The spray structure according to claim 2, characterized in that: The transmission assembly (8) includes a gear (81), a first transmission rod (82), and a second transmission rod (83). The gear (81) is mounted on the mounting base (6) via a mounting shaft (811) and meshes with the annular gear ring (4). The first end of the first transmission rod (82) is fixed on the mounting shaft (811) and rotates together with the gear (81). The second end of the first transmission rod (82) is rotatably connected to the first end of the second transmission rod (83). The second end of the second transmission rod (83) is rotatably connected to the outer end of the movable rod (3) via a connecting shaft (831). The connecting shaft (831) is coaxially arranged with the sliding member (32).

4. The spray structure according to claim 1, characterized in that: The connecting rod (31) is V-shaped and includes a first rod portion (311) and a second rod portion (312). The inner end of the movable rod (3) is connected to the second rod portion (312). The free end (3111) of the first rod portion (311) of each connecting rod (31) is always in contact with the inner side surface (3121) of the second rod portion (312) of its adjacent connecting rod (31), thereby forming the water flow hole (33).

5. The spray structure according to claim 1, characterized in that: There are four arc-shaped grooves (121).

6. The spray structure according to claim 1, characterized in that: The polar coordinate equation of any point on the arc groove (121) satisfies: ρ=3.5θ, where θ is the polar coordinate angle variable of any point.

7. The spray structure according to claim 2, characterized in that: The annular toothed ring (4) has an annular groove (41) on its outer peripheral wall near the center, in which the periphery of the clearance opening (61) is located.

8. The spray structure according to claim 2, characterized in that: The mounting base (6) and the outer wall of the second wall plate (12) of the spray arm (1) form a mounting cavity (60), and the movable rod (3) and the transmission assembly (8) are both located in the mounting cavity (60).

9. The spray structure according to claim 2, characterized in that: The outer wall of the mounting base (6) and the moving part (2) are provided with a guide strip (62) and a guide groove (22) for guiding cooperation. The guide strip (62) and the guide groove (22) both extend along the length direction of the spray arm (1). One of the guide strip (62) and the guide groove (22) is provided on the mounting base (6) and the other is provided on the moving part (2).

10. The spray structure according to claim 9, characterized in that: The guide bar (62) is disposed on the outer wall surface of the mounting base (6), and the guide groove (22) is located on the moving part (2).

11. The spray structure according to claim 2, characterized in that: The mounting base (6) can be detachably mounted on the second wall panel (12) of the spray arm (1).

12. The spray structure according to claim 9, characterized in that: The mounting base (6) is installed on the second wall panel (12) by means of a snap-fit ​​structure.

13. The spray structure according to claim 12, characterized in that: The buckle structure includes a snap-in part (63) and a slot (141) that engage with each other. The snap-in part (63) is disposed on the mounting base (6). The second wall panel (12) of the spray arm (1) is provided with an upwardly extending part (14) at the position corresponding to the snap-in part (63). The extension part (14) has a slot (141) for the snap-in part (63) to snap into.

14. The spray structure according to claim 1, characterized in that: The second wall panel (12) is located above the first wall panel (11).

15. The spray structure according to any one of claims 1 to 14, characterized in that: It also includes an elastic element (7) that causes the movable member (2) to always have an inward tendency to move in the direction of the spray hole (120) along its moving direction, the elastic element (7) acting on the movable member (2).

16. The spray structure according to claim 15, characterized in that: The elastic element (7) includes a spring (71), and a first support (15) is provided on the outer wall surface of the second wall plate (12) of the spray arm (1), and the spring (71) is located between the first support (15) and the moving element (2).

17. The spray structure according to claim 16, characterized in that: The elastic element (7) also includes a tension spring (72), and a second support (16) is provided on the outer wall surface of the second wall panel (12). The movable element (2) is partially located between the first support (15) and the second support (16). The first end of the tension spring (72) is connected to the movable element (2), and the second end of the tension spring (72) is connected to the second support (16).

18. A cleaning machine, comprising a housing and a spray structure, wherein the housing has a washing chamber inside, and the spray structure is located within the washing chamber, characterized in that: The spray structure is the spray structure described in any one of claims 1 to 17.

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