A spray arm and a cleaning machine using the spray arm

Abstract

The present invention relates to a spray arm, comprising a spray arm body, the spray arm body is hollow inside to form a water collecting chamber, a water inlet is provided on the first wall surface of the spray arm body, a water outlet hole connected to the water collecting chamber is provided on the second wall surface of the spray arm body, and the characteristic is that: a water outlet for water flow is also provided on the first wall surface of the spray arm body, and a deflection member capable of deflecting relative to the water outlet so that the water flow is sprayed obliquely along the circumference of the spray arm body is provided in the water outlet. The present invention arranges a water outlet on the same wall surface as the water inlet of the spray arm, and a deflection member capable of deflecting relative to the water outlet so that the water flow is sprayed obliquely along the circumference of the spray arm body is provided in the water outlet. During the rotation of the spray arm, the obliquely sprayed water flow can sweep the food residue circumferentially, thereby sweeping the food residue into a residue basket located outside the rotation axis of the spray arm, and achieving a better residue sweeping effect.

Description

Technical Field

[0001] The invention relates to a spray arm and a cleaning machine using the spray arm. Background Art

[0002] As people's living standards continue to improve, dishwashers, as a kitchen appliance, are increasingly entering households. Currently, dishwashers on the market are generally divided into three types: desktop, cabinet, and tank. Among them, desktop dishwashers are integrated independent structures and are generally placed on the table for use; cabinet dishwashers are also independent structures, but need to be embedded in kitchen cabinets for use; tank dishwashers are combined with sinks and are generally installed in kitchen cabinets for use.

[0003] For a sink-type cleaning machine, the slag basket is generally not located at the rotation axis of the spray arm, but is set near the periphery of the rotation axis of the spray arm. However, the current slag sweeping structure on the spray arm mainly has a water spray hole on the lower wall surface at one end of the spray arm. The water spray hole allows the water to flow in the direction of the rotation axis of the spray arm. During the rotation of the spray arm, the food residue at the bottom of the sink can be continuously gathered in the direction of the rotation axis of the spray arm. The problem with such a structure is that although the slag gathering function is achieved, the food residue on the tank body and the filter plate can only be gathered near the rotation axis of the spray arm, and the residue cannot be completely swept into the slag basket, resulting in a poor slag sweeping effect.

[0004] Therefore, further improvements are needed for the current spray arm structure. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a spray arm which can collect food residues and sweep them into a residue basket so as to improve the residue sweeping effect in view of the current status of the prior art.

[0006] Another technical problem to be solved by the present invention is to provide a cleaning machine using the above-mentioned spray arm, which can cooperate with the rotation process of the spray arm to perform circumferential residue sweeping so as to sweep food residue into the residue basket to improve the cleaning effect.

[0007] The technical solution adopted by the present invention to solve the above-mentioned technical problems is: a spray arm, including a spray arm body, the interior of the spray arm body is hollow to form a water collecting chamber, a water inlet is opened on the first wall of the spray arm body, and a water outlet hole connected to the water collecting chamber is opened on the second wall of the spray arm body. It is characterized in that: a water outlet for water flow to be sprayed out is also opened on the first wall of the spray arm body, and a deflection member is provided in the water outlet which can be deflected relative to the water outlet so that the water flow is sprayed out along the circumferential direction of the spray arm body.

[0008] In the above scheme, the deflection member at least includes a first baffle and a second baffle, the first end of the first baffle is connected to the first end of the second baffle, the second end of the first baffle is gradually separated from the second end of the second baffle to form a V-shaped structure, the first baffle and the second baffle are both movably arranged in the water outlet and can respectively cooperate with the adjacent edges of the water outlet to determine the direction of the water flow to be sprayed out obliquely. Such a structure is adopted to achieve the adjustment of the direction of the water flow to be sprayed obliquely, and when the deflection directions of the first baffle and the second baffle are opposite, the direction of the water flow to be sprayed obliquely is also opposite, thereby achieving two-way sweeping of the residue, so that the food residues in the entire circumference can be swept into the residue basket.

[0009] Preferably, the side of the deflector is provided with an elastic member that enables the first baffle of the deflector to always keep close to the edge of the corresponding water outlet, and the second baffle to always keep away from the edge of the corresponding water outlet and form a water outlet gap. This structure can realize slag sweeping in one direction.

[0010] Preferably, the deflector is connected with a driving structure capable of overcoming the elastic force of the elastic member so that the second baffle and the corresponding water outlet edge are close to each other, the first baffle and the corresponding water outlet edge are away from each other, and a water outlet gap is formed. This structure can realize the slag sweeping in another direction, thereby cooperating with the slag sweeping in the above direction to reciprocate the slag sweeping of the entire area below the spray arm, and quickly sweep the food residue into the slag basket.

[0011] To facilitate assembly, the deflection member is provided with a connecting portion extending from the middle of the V-shaped structure in a direction opposite to the opening. The connecting portion and the V-shaped structure together form a Y-shaped structure. The connecting portion is provided with a connecting shaft arranged along the length direction. The connecting shaft can be rotatably arranged above the water outlet and is connected to the driving structure.

[0012] In order to facilitate installation, brackets are arranged on the inner wall surface of the spray arm body above the water outlet, which are respectively located at the two ends of the water outlet. The brackets are provided with shaft holes for the connecting shaft to be rotatably clamped therein.

[0013] To facilitate installation, the connecting portion is provided with a first limiting column arranged axially perpendicular to the connecting axis. Correspondingly, the inner wall of the spray arm body is provided with a second limiting column arranged corresponding to the first limiting column. The elastic member is a spring whose ends are respectively sleeved on the first limiting column and the second limiting column.

[0014] Preferably, the water outlet is square, and in the assembled state, the two ends of the first baffle and the second baffle are close to the two ends of the water outlet respectively. This structure can prevent water from flowing out from the two ends of the water outlet and affecting the slag cleaning effect.

[0015] As an improvement, the spray arm body extends from the middle to both ends to form a first flow channel and a second flow channel, the water outlet is opened in the middle of the first flow channel, and the bottom wall of the second flow channel is provided with a water spray port that can spray water obliquely toward the rotation axis of the spray arm body. With such a structure, the water outlet can perform circumferential slag sweeping, combined with the radial slag sweeping function of the water spray port, which is conducive to improving the slag sweeping effect.

[0016] Preferably, the water spray port is arranged near the end of the second flow channel, a guide groove gradually deepened radially outward is formed on the bottom wall of the spray arm body, and the water spray port is opened on the outer end wall of the guide groove. The outer end wall of the guide groove gradually tilts from bottom to top toward the rotation axis of the spray arm body. This structure is conducive to making the water sprayed from the water spray port gather the slag radially from outside to inside in a scraping and advancing manner, thereby improving the slag gathering effect.

[0017] A cleaning machine using the above-mentioned spray arm comprises a water tank body, a filter screen plate, a motor assembly and the spray arm, wherein the water tank body is hollow inside to form a washing chamber, the filter screen plate is arranged at the lower part of the washing chamber and is installed with a slag basket, the spray arm is rotatably arranged in the washing chamber and is located above the filter screen plate, the motor assembly is arranged below the water tank body and the upper part is rotatably matched with the water inlet at the bottom of the spray arm, and is characterized in that: a connecting rod is arranged in the spray arm and can cooperate with the upper end of the motor assembly to drive the deflection member to deflect or not.

[0018] Preferably, a portion of the top edge of the motor assembly has a circumferentially arranged convex ring, the first end of the connecting rod can slide with the convex ring, the second end of the connecting rod is connected to the deflection member, and a rotating shaft rotatably connected to the middle part of the connecting rod is provided on the inner bottom wall of the spray arm body, and when the spray arm rotates to the state where the first end of the connecting rod abuts against the convex ring and slides, the second baffle and the corresponding water outlet edge are close to each other, the first baffle and the corresponding water outlet edge are separated from each other and a water outlet gap is formed; when the spray arm rotates to the state where the first end of the connecting rod leaves the convex ring, the first baffle and the corresponding water outlet edge are close to each other, the second baffle and the corresponding water outlet edge are separated from each other and a water outlet gap is formed. The above structure can be switched in two slag sweeping directions according to the rotation of the spray arm to improve the slag sweeping effect.

[0019] In order to facilitate the matching of the connecting rod and the motor assembly, the first end of the connecting rod is bent perpendicular to the main part of the connecting rod toward the motor assembly so that the connecting rod forms an L-shaped structure, and a fork that can cooperate with the outer edge of the convex ring is provided on the first end of the connecting rod. The end of the fork is formed into an arc structure that gradually arches toward the rotation direction of the spray arm, and correspondingly, the end of the convex ring is formed with an arc surface that gradually transitions smoothly along the circumferential direction. A throat portion arranged near the water inlet is formed in the water collection chamber of the spray arm, and the L-shaped structure of the connecting rod is formed with a matching groove at the bending part that can cooperate with the throat portion to avoid interference between the first end of the connecting rod and the motor assembly.

[0020] Preferably, the convex ring covers one third to one half of the upper edge of the motor assembly. The coverage of the convex ring determines the duration of a corresponding slag sweeping direction, and balancing the slag sweeping time in two directions as much as possible is conducive to improving the slag sweeping effect.

[0021] In order to facilitate connection, a vertically arranged clamping foot is provided on one end of the deflection member close to the connecting rod, and correspondingly, a clamping opening is opened on the second end of the connecting rod in which the clamping foot can be rotatably clamped.

[0022] Compared with the prior art, the advantages of the present invention are: a water outlet is arranged on the same wall surface as the water inlet of the spray arm, and a deflection member is arranged in the water outlet, which can deflect relative to the water outlet so that the water flow is sprayed out along the circumference of the spray arm body at an angle. During the rotation of the spray arm, the inclined sprayed water flow can sweep the food residue circumferentially, thereby sweeping the food residue into a residue basket located outside the rotating axis of the spray arm, thereby achieving a better residue sweeping effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of an embodiment of the present invention;

[0024] Figure 2 for Figure 1 Schematic diagram of some structures;

[0025] Figure 3 It is a partial structural schematic diagram of the spray arm body in an embodiment of the present invention;

[0026] Figure 4 for Figure 3 A schematic diagram of the structure from another angle;

[0027] Figure 5 Based Figure 2 Schematic diagram of some structures;

[0028] Figure 6 is a schematic structural diagram of a deflection member in an embodiment of the present invention;

[0029] Figure 7 Schematic diagram of the structure of the connecting rod in an embodiment of the present invention. DETAILED DESCRIPTION

[0030] The present invention is further described in detail below with reference to the accompanying drawings.

[0031] like Figures 1 to 7 As shown, the spray arm of the present embodiment includes a spray arm body 1, which is hollow inside to form a water collecting chamber 10, and the spray arm body 1 extends from the middle to both ends to form a first flow channel 101 and a second flow channel 102 which are respectively connected to the water collecting chamber 10, and the connection between the water collecting chamber 10 and the first flow channel 101 and the second flow channel 102 forms a throat portion 103 of the spray arm body 1, and a water inlet 11 which is connected to the water collecting chamber 10 is opened in the central portion of the lower wall of the spray arm body 1, and a plurality of water outlets 12 which are respectively connected to the first flow channel 101 and the second flow channel 102 are arranged at intervals on the upper wall of the spray arm body 1.

[0032] The lower wall surface of the spray arm body 1 of this embodiment is provided with a water outlet 13 corresponding to the middle position of the first flow channel 101 for spraying water supply flow, and the water outlet 13 is provided with a deflection member 2 that can deflect relative to the water outlet 13 so that the water flow is sprayed obliquely along the circumferential direction of the spray arm body 1. The lower wall surface of the spray arm body 1 is also provided with a water spray port 14 arranged at the end position corresponding to the second flow channel 102, and the water spray port 14 can spray the water flow obliquely toward the rotation axis direction of the spray arm body 1. The main function of the above-mentioned water outlet 13 is to sweep the slag circumferentially along the rotation direction of the spray arm body 1, and the main function of the above-mentioned water spray port 14 is to gather the slag along the radial direction of the spray arm body 1, thereby improving the slag sweeping effect. A guide groove 141 is formed on the bottom wall of the spray arm body 1, which gradually deepens radially outward. The outer end wall of the guide groove 141 gradually inclines toward the rotation axis of the spray arm body 1 from bottom to top, and the water spray port 14 is opened on the outer end wall of the guide groove 141. This structure is conducive to allowing the water sprayed from the water spray port 14 to gather slag radially from the outside to the inside in a scraping and advancing manner, thereby further improving the slag gathering effect.

[0033] In this embodiment, the cleaning machine using the above-mentioned spray arm includes a water tank body 3, a filter screen plate 4, a motor assembly 5 and a spray arm. The water tank body 3 is hollow inside to form a washing chamber 30. The filter screen plate 4 is arranged at the lower part of the washing chamber 30 and is installed with a slag basket 6. The spray arm is rotatably arranged in the washing chamber 30 and is located above the filter screen plate 4. The motor assembly 5 is arranged below the water tank body 3 and the upper part passes through the water tank body 3, the filter screen plate 4 and the water inlet 11 at the bottom of the spray arm body 1 to rotate and cooperate. The spray arm body 1 is provided with a driving structure that can cooperate with the upper end of the motor assembly 5 to drive the deflection member 2 to deflect or not. The driving structure is a connecting rod 7.

[0034] Specifically, the deflection member 2 at least includes a first baffle 21 and a second baffle 22. The first end of the first baffle 21 is connected to the first end of the second baffle 22, and the second end of the first baffle 21 is gradually separated from the second end of the second baffle 22 to form a V-shaped structure. The first baffle 21 and the second baffle 22 are both movably arranged in the water outlet 13 and can respectively cooperate with the edges of the water outlet 13 that are close to each other to determine the direction of the water flow tilted spraying. Such a structure is adopted to achieve the adjustment of the direction of the water flow tilted spraying, and when the deflection direction of the deflection member 2 is opposite, the direction of the water flow tilted spraying is also opposite, thereby achieving two-way slag sweeping, so that the food residues in the entire circumferential direction can be swept into the slag basket 6. The side of the deflection member 2 is provided with an elastic member 8 that can keep the first baffle 21 of the deflection member 2 close to the edge of the corresponding water outlet 13, and the second baffle 22 always keep away from the edge of the corresponding water outlet 13 and form a water outlet gap trend. This structure can achieve slag sweeping in one direction. The deflection member 2 is connected with a driving structure that can overcome the elastic force of the elastic member 8 so that the second baffle 22 and the edge of the corresponding water outlet 13 are close to each other, and the first baffle 21 and the edge of the corresponding water outlet 13 are away from each other to form a water outlet gap. The driving structure is the above-mentioned connecting rod 7. This structure can realize the slag sweeping in another direction, so as to cooperate with the slag sweeping in the above-mentioned direction to reciprocate the slag sweeping of the entire area under the spray arm, and quickly sweep the food residue into the slag basket. The water outlet 13 of this embodiment is square. In the assembled state, the two ends of the first baffle 21 and the second baffle 22 are close to the two ends of the water outlet 13 respectively. This structure can prevent water from flowing out from the two ends of the water outlet and affecting the slag sweeping effect.

[0035] In order to facilitate assembly, the deflection member 2 is provided with a connection portion 23 extending from the middle of the V-shaped structure in the direction opposite to the opening. The connection portion 23 and the V-shaped structure together form a Y-shaped structure. The connection portion 23 is provided with a connection shaft 24 arranged along the length direction. The connection shaft 24 is rotatably arranged above the water outlet 13 and connected to the connecting rod 7. The inner wall surface of the spray arm body 1 above the water outlet 13 is provided with brackets 131 respectively located at both ends of the water outlet 13. The bracket 131 is provided with an axis hole 132 for the connection shaft 24 to be rotatably clamped therein. The connection portion 23 is provided with a first limiting column 231 arranged perpendicular to the axial direction of the connection shaft 24. Correspondingly, the inner wall of the spray arm body 1 is provided with a second limiting column 100 arranged corresponding to the first limiting column 231. The elastic member 8 is a spring whose ends are respectively sleeved on the first limiting column 231 and the second limiting column 100.

[0036] In this embodiment, a portion of the top edge of the motor assembly 5 has a circumferentially arranged convex ring 51, and the first end of the connecting rod 7 can slide with the convex ring 51. A vertically arranged clamping foot 241 is provided on the end of the connecting shaft 24 of the deflection member 2 close to the connecting rod 7, and correspondingly, a clamping opening 70 is provided on the second end of the connecting rod 7 to rotatably clamp the clamping foot 241. A rotating shaft 15 rotatably connected to the middle part of the connecting rod 7 is provided on the inner bottom wall of the spray arm body 1. When the spray arm rotates to the state where the first end of the connecting rod 7 abuts against the outer peripheral wall of the convex ring 51 and slides, the second baffle 22 and the edge of the corresponding water outlet 13 are close to each other, and the first baffle 21 and the edge of the corresponding water outlet 13 are separated from each other to form a water outlet gap; when the spray arm rotates to the state where the first end of the connecting rod 7 leaves the convex ring 51, the first baffle 21 and the edge of the corresponding water outlet 13 are close to each other, and the second baffle 22 and the edge of the corresponding water outlet 13 are separated from each other to form a water outlet gap. The above structure can switch between two slag sweeping directions according to the rotation of the spray arm to improve the slag sweeping effect. The convex ring 51 of this embodiment covers one third to one half of the upper edge of the motor assembly 5. The coverage of the convex ring 51 determines the duration of a corresponding slag sweeping direction. Trying to equalize the slag sweeping time in the two directions is conducive to improving the slag sweeping effect.

[0037] In order to facilitate the matching of the connecting rod 7 and the motor assembly 5, the first end of the connecting rod 7 is bent perpendicular to the main part of the connecting rod 7 toward the motor assembly 5 so that the connecting rod 7 forms an L-shaped structure, and a fork 71 capable of matching with the outer edge of the convex ring 51 is provided on the first end of the connecting rod 7. The end of the fork 71 is formed into an arc structure 711 that gradually arches in the direction of rotation of the spray arm, and correspondingly, the end of the convex ring 51 is formed with an arc surface 511 that gradually transitions smoothly along the circumferential direction. A throat portion 103 arranged near the water inlet 11 is formed in the water collection chamber 10 of the spray arm, and a matching groove 72 capable of matching with the throat portion 103 is formed at the bending part of the L-shaped structure of the connecting rod 7 to avoid interference between the first end of the connecting rod 7 and the motor assembly 5.

[0038] When the cleaning machine of this embodiment is used, the water spray port 14 always collects the food residues radially from the outside to the inside. When the spray arm rotates to the point where the fork 71 at the first end of the connecting rod 7 abuts against the outer periphery of the convex ring 5 at the upper end of the motor assembly 5, the connecting rod 7 causes the deflection member 2 to compress the elastic member 8, so that the second baffle 22 abuts against the corresponding edge of the water outlet 13, and a water outlet gap is formed between the first baffle 21 and the corresponding edge of the water outlet 13, and the residue is swept circumferentially from one direction. When the spray arm rotates to the point where the fork 71 at the first end of the connecting rod 7 is disengaged from the convex ring 5 at the upper end of the motor assembly 5, the pressing effect of the connecting rod 7 on the elastic member 8 disappears, and the deflection member 2 is reset under the action of the elastic member 8, so that the first baffle 21 abuts against the corresponding edge of the water outlet 13, and a water outlet gap is formed between the second baffle 22 and the corresponding edge of the water outlet 13, and the residue is swept circumferentially from another direction to sweep the food residues into the residue basket 6.

Claims

1. A spray arm, comprising a spray arm body (1), the spray arm body (1) being hollow inside so as to form a water collecting chamber (10), a water inlet (11) being arranged on a first wall surface of the spray arm body (1) and being connected to the water collecting chamber (10), and a water outlet (12) being arranged on a second wall surface of the spray arm body (1) and being connected to the water collecting chamber (10), characterized in that: A water outlet (13) for water to be sprayed out is also provided on the first wall surface of the spray arm body (1), and a deflection member (2) is provided in the water outlet (13) which can be deflected relative to the water outlet (13) so that the water flow is sprayed out obliquely along the circumferential direction of the spray arm body (1); The deflection member (2) comprises at least a first baffle (21) and a second baffle (22); a first end of the first baffle (21) and a first end of the second baffle (22) are connected to each other; a second end of the first baffle (21) and a second end of the second baffle (22) are gradually separated from each other to form a V-shaped structure; the first baffle (21) and the second baffle (22) are both movably arranged in the water outlet (13) and can respectively cooperate with adjacent edges of the water outlet (13) to determine the direction in which the water flow is sprayed out obliquely; The side of the deflection member (2) is provided with an elastic member (8) capable of keeping the first baffle (21) of the deflection member (2) always close to the edge of the corresponding water outlet (13), and the second baffle (22) always away from the edge of the corresponding water outlet (13), thereby forming a water outlet gap trend; The deflection member (2) is connected to a driving structure capable of overcoming the elastic force of the elastic member (8) so that the second baffle (22) and the edge of the corresponding water outlet (13) are brought closer to each other, and the first baffle (21) and the edge of the corresponding water outlet (13) are moved away from each other to form a water outlet gap; The deflection member (2) is provided with a connecting portion (23) extending from the middle of the V-shaped structure in a direction opposite to the opening, the connecting portion (23) and the V-shaped structure together form a Y-shaped structure, the connecting portion (23) is provided with a connecting shaft (24) arranged along the length direction, the connecting shaft (24) is rotatably arranged above the water outlet (13) and is connected to the driving structure; A bracket (131) is provided on the inner wall surface of the spray arm body (1) above the water outlet (13), and is located at both ends of the water outlet (13). The bracket (131) is provided with an axis hole (132) in which the connecting shaft (24) is rotatably mounted. The connecting portion (23) is provided with a first limiting column (231) axially arranged perpendicular to the connecting shaft (24); correspondingly, the inner wall of the spray arm body (1) is provided with a second limiting column (100) arranged corresponding to the first limiting column (231); and the elastic member (8) is a spring whose ends are respectively sleeved on the first limiting column (231) and the second limiting column (100).

2. The spray arm according to claim 1, characterized in that: The water outlet (13) is square, and in the assembled state, two ends of the first baffle (21) and the second baffle (22) are respectively close to two ends of the water outlet (13).

3. The spray arm according to claim 1, characterized in that: The spray arm body (1) extends from the middle to both ends to form a first flow channel (101) and a second flow channel (102); the water outlet (13) is provided in the middle of the first flow channel (101); and a water spray port (14) capable of spraying water obliquely in the direction of the rotation axis of the spray arm body (1) is provided on the bottom wall of the second flow channel (102).

4. The spray arm according to claim 3, characterized in that: The water spray port (14) is arranged near the end of the second flow channel (102), a guide groove (141) which gradually deepens radially outward is formed on the bottom wall of the spray arm body (1), and the water spray port (14) is opened on the outer end wall of the guide groove (141).

5. The spray arm according to claim 4, characterized in that: The outer end wall of the guide groove (141) gradually inclines from bottom to top toward the rotation axis of the spray arm body (1).

6. A cleaning machine using the spray arm according to any one of claims 1 to 5, comprising a water tank body (3), a filter screen plate (4), a motor assembly (5) and the spray arm, wherein the water tank body (3) is hollow inside to form a washing chamber (30), the filter screen plate (4) is arranged at the lower part of the washing chamber (30) and is provided with a slag basket (6), the spray arm is rotatably arranged in the washing chamber (30) and is located above the filter screen plate (4), the motor assembly (5) is arranged below the water tank body (3) and the upper part is rotatably matched with the water inlet (11) at the bottom of the spray arm, and is characterized in that: The spray arm is provided with a connecting rod (7) which can cooperate with the upper end of the motor assembly (5) to drive the deflection member (2) to deflect or not.

7. The cleaning machine according to claim 6, characterized in that: A partial area of ​​the top edge of the motor assembly (5) has a circumferentially arranged convex ring (51), the first end of the connecting rod (7) can slide with the convex ring (51), the second end of the connecting rod (7) is connected to the deflection member (2), and a rotating shaft (15) rotatably connected to the middle part of the connecting rod (7) is provided on the inner bottom wall of the spray arm body (1). When the spray arm is rotated to the state where the first end of the connecting rod (7) abuts against the convex ring (51) and slides with each other, the second baffle (22) and the edge of the corresponding water outlet (13) are close to each other, and the first baffle (21) and the edge of the corresponding water outlet (13) are separated from each other to form a water outlet gap; when the spray arm is rotated to the state where the first end of the connecting rod (7) leaves the convex ring (51), the first baffle (21) and the edge of the corresponding water outlet (13) are close to each other, and the second baffle (22) and the edge of the corresponding water outlet (13) are separated from each other to form a water outlet gap.

8. The cleaning machine according to claim 7, characterized in that: The first end of the connecting rod (7) is bent perpendicularly to the main part of the connecting rod (7) toward the motor assembly (5) so that the connecting rod forms an L-shaped structure. The first end of the connecting rod (7) is provided with a shift fork (71) that can cooperate with the outer edge of the convex ring (51) for guiding.

9. The cleaning machine according to claim 8, characterized in that: The end of the shift fork (71) is formed into an arc-shaped structure (711) that gradually arches in the direction of rotation of the spray arm. Correspondingly, the end of the convex ring (51) is formed with an arc surface (511) that gradually and smoothly transitions along the circumferential direction.

10. The cleaning machine according to claim 8, characterized in that: A throat portion (103) arranged close to the water inlet (11) is formed in the water collecting chamber (10) of the spray arm, and a matching groove (72) is formed at the bending part of the L-shaped structure of the connecting rod (7) which can cooperate with the throat portion (103) to limit the position so as to avoid interference between the first end of the connecting rod (7) and the motor assembly (5).

11. The cleaning machine according to claim 7, characterized in that: The raised ring (51) covers one third to one half of the upper edge of the motor component (5).

12. The cleaning machine according to any one of claims 7 to 11, characterized in that: A vertically arranged clamping foot (241) is provided at one end of the deflection member (2) close to the connecting rod (7), and correspondingly, a clamping opening (70) capable of rotatably clamping the clamping foot (241) is provided on the second end of the connecting rod (7).

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