Spray arms and dishwashers

Abstract

The utility model provides a spray arm and a dishwasher, which relate to the technical field of kitchen appliances, wherein the spray arm comprises a spray arm body and a spray arm support arm; the spray arm body is provided with a shaft body, and the spray arm support arm is sleeved on the shaft body; a driving member is provided on the bottom surface of the spray arm support arm; a support is provided below the driving member, and the support and the driving member can cooperate to drive the spray arm support arm to rotate around the axis of the shaft body; an elastic member is provided between the spray arm body and the spray arm support arm, and the elastic force of the elastic member can drive the spray arm support arm to rotate to an initial state. When the spray arm is in operation, the water flow pushes the spray arm to rotate around the axis of the spray arm body as a whole, while the support and the driving member can cooperate to drive the spray arm support arm to rotate around the axis of the shaft body, thereby realizing the angle change of the spray arm support arm, so as to expand the washing range of the water column, so that the water column can wash the tableware at more angles, and improve the cleaning effect.

Description

Technical Field

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

[0002] The spray arm is the core component of the dishwasher. A water inlet is provided at the bottom of the spray arm. Water flows into the spray arm through the water inlet and then is sprayed out through the spray holes. The water sprayed from the spray holes washes and cleans the tableware on the shelf.

[0003] The angle of the spray hole of the existing spray arm is fixed, and the water sprayed from the spray hole can only wash a certain position of the tableware. When the tableware is dirty over a large area, the water sprayed from the spray hole can only clean a certain position of the tableware, while the dirt in other positions cannot be cleaned. The cleaning range of the spray arm is limited, and the cleaning effect is poor. Utility Model Content

[0004] The utility model aims to provide a spray arm to solve the technical problem of poor cleaning effect of the spray arm in the prior art.

[0005] The spray arm provided by the utility model comprises a spray arm body and a spray arm support arm;

[0006] The spray arm body is provided with a shaft body, and the spray arm support arm is sleeved on the shaft body; a driving member is provided on the bottom surface of the spray arm support arm; a support is provided below the driving member, and the support and the driving member can cooperate to drive the spray arm support arm to rotate around the axis of the shaft body;

[0007] An elastic member is provided between the spray arm body and the spray arm support arm, and the elastic force of the elastic member can drive the spray arm support arm to rotate to an initial state.

[0008] Furthermore, the top surface of the support has a convex structure;

[0009] The driving member is an elastic structure, one end of which is connected to the bottom surface of the spray arm support arm, and the protruding structure can contact and squeeze the other end of the elastic structure to drive the spray arm support arm to rotate around the axis of the shaft body.

[0010] Furthermore, there are a plurality of protrusion structures, and the plurality of protrusion structures are arranged at intervals along the circumference of the support.

[0011] Furthermore, the longitudinal cross-section of the protruding structure is trapezoidal.

[0012] Furthermore, one end of the elastic structure is detachably connected to the bottom surface of the spray arm support arm.

[0013] Furthermore, a satellite spray arm is provided at the end of the spray arm support arm.

[0014] Furthermore, the satellite spray arm is detachably connected to the spray arm support arm.

[0015] Furthermore, the spray arm also includes a mounting member;

[0016] The mounting piece is connected to the inner wall of the spray arm support arm; the mounting piece is sleeved on the shaft body; and the elastic piece is connected between the spray arm body and the mounting piece.

[0017] Furthermore, the spray arm also includes a limiter;

[0018] The limiting member is connected to one end of the shaft body, and the limiting member has a limiting protrusion; the spray arm support arm is sleeved on the outside of the limiting member, and the inner wall of the spray arm support arm has a limiting structure; along the axial direction of the shaft body, the limiting structure is located on the side of the limiting protrusion facing the inside of the spray arm body; the limiting structure can abut against the limiting protrusion.

[0019] The utility model also aims to provide a dishwasher, comprising the spray arm provided by the utility model.

[0020] The spray arm provided by the utility model comprises a spray arm body and a spray arm support arm; the spray arm body is provided with a shaft body, and the spray arm support arm is sleeved on the shaft body; a driving member is provided on the bottom surface of the spray arm support arm; a support is provided below the driving member, and the support and the driving member can cooperate to drive the spray arm support arm to rotate around the axis of the shaft body; an elastic member is provided between the spray arm body and the spray arm support arm, and the elastic force of the elastic member can drive the spray arm support arm to rotate to an initial state. When the spray arm is in operation, the water flow pushes the spray arm to rotate around the axis of the spray arm body as a whole, while the support and the driving member can cooperate to drive the spray arm support arm to rotate around the axis of the shaft body, thereby realizing the angle change of the spray arm support arm, so as to expand the washing range of the water column, so that the water column can wash the tableware at a wider angle, and improve the cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a stereoscopic diagram of the spray arm provided by the embodiment of the utility model (the spray arm support arm is in the initial state);

[0023] Figure 2 It is a three-dimensional diagram of the spray arm provided by the embodiment of the utility model (the spray arm support arm is rotated to an angle);

[0024] Figure 3 It is a partial enlarged view of the spray arm provided in the embodiment of the utility model;

[0025] Figure 4 is an exploded view of a spray arm provided in an embodiment of the utility model;

[0026] Figure 5 It is a three-dimensional diagram of a spray arm with a metal part that can be magnetically attracted provided by an embodiment of the utility model (the spray arm support arm is in an initial state);

[0027] Figure 6 It is a three-dimensional diagram of a spray arm with a metal part that can be magnetically attracted provided by an embodiment of the utility model (the spray arm support arm is rotated to an angle);

[0028] Figure 7 It is a schematic diagram of the structure of a spray arm with satellite spray arms provided by an embodiment of the utility model;

[0029] Figure 8 It is a cross-sectional view of a spray arm with satellite spray arms provided by an embodiment of the utility model;

[0030] Fig. 9 It is a bottom view of the spray arm provided by the embodiment of the utility model;

[0031] Fig.10 yes Fig. 9 A partial enlarged view of

[0032] Fig.11 is an exploded view of a spray arm provided in an embodiment of the utility model;

[0033] Fig.12 yes Fig.11 A partial enlarged view of

[0034] Fig.13 It is a cross-sectional view of a spray arm support arm and a mounting member in a spray arm provided by an embodiment of the utility model;

[0035] Fig.14 It is a partial enlarged view of the spray arm provided in the embodiment of the utility model;

[0036] Fig.15 It is a schematic structural diagram of a limiter and a shaft body in a spray arm provided in an embodiment of the utility model.

[0037] Icons: 100-spray arm support; 110-spray arm support upper shell; 111-spray hole; 112-satellite spray arm water inlet; 120-spray arm support lower shell; 121-second deflection limiter; 200-spray arm body; 210-spray arm body upper shell; 220-spray arm body lower shell; 221-water inlet; 222-first deflection limiter; 230-axis body; 240-second slot; 250-second buckle; 300-mounting piece; 3 10-first buckle; 320-first slot; 400-torsion spring; 410-one end of the torsion spring; 420-the other end of the torsion spring; 500-limiting member; 600-support; 610-protruding structure; 700-elastic structure; 800-screw; 900-metal member that can be magnetically attracted; 1000-magnet; 1100-satellite spray arm; 1110-satellite spray arm upper shell; 1120-satellite spray arm lower shell; 1200-satellite spray arm fixing member. DETAILED DESCRIPTION

[0038] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0039] The utility model provides a spray arm and a dishwasher. A plurality of embodiments are given below to describe the spray arm and the dishwasher provided by the utility model in detail.

[0040] Example 1

[0041] The spray arm provided in this embodiment is as follows: Figures 1 to 15 As shown, it includes a spray arm body 200 and a spray arm support arm 100; the spray arm body 200 is provided with a shaft body 230, and the spray arm support arm 100 is sleeved on the shaft body 230; a driving member is provided on the bottom surface of the spray arm support arm 100; a support 600 is provided below the driving member, and the support 600 and the driving member can cooperate to drive the spray arm support arm 100 to rotate around the axis of the shaft body 230; an elastic member is provided between the spray arm body 200 and the spray arm support arm 100, and the elastic force of the elastic member can drive the spray arm support arm 100 to rotate to an initial state.

[0042] When the spray arm is running, the water flow pushes the spray arm to rotate as a whole around the axis of the spray arm body 200. At the same time, the support 600 and the driving member can cooperate to drive the spray arm support arm 100 to rotate around the axis of the shaft body 230, thereby realizing the angle change of the spray arm support arm 100 to expand the flushing range of the water column, so that the water column can flush the tableware at more angles and improve the cleaning effect.

[0043] In order to enable the support 600 and the driving member to cooperate to drive the spray arm support arm 100 to rotate around the axis of the shaft body 230, in an optional embodiment, the top surface of the support 600 has a protruding structure 610; the driving member is an elastic structure 700, and the protruding structure 610 can contact and squeeze the other end of the elastic structure 700 to drive the spray arm support arm 100 to rotate around the axis of the shaft body 230.

[0044] When the spray arm is in operation, the water flow pushes the spray arm to rotate as a whole around the axis of the spray arm body 200, and the elastic structure 700 also rotates around the axis of the spray arm body 200 along with the spray arm support arm 100. Figure 1 As shown, when the spray arm support arm 100 is in the initial state, the other end of the elastic structure 700 can contact the top surface of the support 600 (the area of ​​the top surface of the support 600 except the protruding structure 610), and the elastic force of the elastic member makes the spray arm support arm 100 face the initial position in the initial state. As the elastic structure 700 rotates around the axis of the spray arm body 200, as shown in FIG. Figure 2 As shown, the elastic structure 700 rotates to a position in contact with the raised structure 610, and the spray arm support arm 100 rotates around the axis of the shaft body 230 under the squeezing action of the elastic structure 700, thereby realizing the angle change of the spray arm support arm 100. As the elastic structure 700 moves, the elastic structure 700 moves to a position where it is not in contact with the raised structure 610 (at this time, the elastic structure 700 is in contact with the top surface of the support 600), and the elastic structure 700 is no longer squeezed, and the spray arm support arm 100 returns to its initial state under the elastic force of the elastic member.

[0045] A protrusion may be provided on the top surface of the support 600 so that the protrusion forms a protrusion structure 610 , and a groove may be provided on the top surface of the support 600 so that the area outside the groove forms the protrusion structure 610 .

[0046] Furthermore, there are multiple protrusion structures 610 , and the multiple protrusion structures 610 are arranged at intervals along the circumference of the support 600 .

[0047] The plurality of protrusions are arranged at intervals along the circumference of the support 600 . During one rotation of the spray arm, the elastic structure 700 can contact different protrusion structures 610 multiple times, so that the angle of the spray arm support 100 can be changed multiple times.

[0048] The heights of the multiple protrusions protruding from the top surface of the support 600 can be the same or different, and the extrusion amount of the elastic structure 700 can be adjusted by the height of the protrusions protruding from the top surface of the support 600, thereby adjusting the rotation angle of the spray arm support 100.

[0049] Preferably, a plurality of protrusions are evenly spaced along the circumference of the support 600, so that the angle of the spray arm support 100 is changed at fixed intervals when the rotation speed of the spray arm remains unchanged.

[0050] The longitudinal cross-section of the protrusion structure 610 may be any suitable shape, such as a rectangle or an arc.

[0051] Preferably, the longitudinal cross-section of the protruding structure 610 is trapezoidal.

[0052] The longitudinal cross-section of the raised structure 610 is a trapezoid, and the width of the top edge is smaller than the width of the bottom edge, so that the two side walls of the raised structure 610 can be inclined surfaces. During the contact between the elastic structure 700 and the raised structure 610, the elastic structure 700 can be gradually squeezed or released by the inclined surface, so that the spray arm support arm 100 has higher stability in rotating around the axis of the spray arm body 200.

[0053] Furthermore, one end of the elastic structure 700 is detachably connected to the bottom surface of the spray arm support arm 100 .

[0054] The detachable connection may be through a snap connection, or through a screw 800, etc. This can facilitate the assembly and disassembly of the elastic structure 700.

[0055] In this embodiment, the elastic structure 700 is a spring sheet, which may be a plastic spring sheet or a metal spring sheet.

[0056] In another optional embodiment, the driving member is a metal member 900 that can be attracted by magnets, a magnet 1000 is disposed on the top surface of the support 600, and a plurality of magnets 1000 are disposed at intervals along the circumference of the support 600. Figure 6 As shown, when the water flow drives the spray arm to rotate as a whole around the axis of the spray arm body 200, when the metal part that can be attracted by the magnet 1000 passes above the magnet 1000, the metal part that can be attracted by the magnet 1000 is attracted by the magnet 1000, thereby driving the spray arm support arm 100 to rotate around the axis of the shaft body 230, thereby realizing the angle change of the spray arm support arm 100. As the metal part 900 that can be attracted by the magnet moves, as shown in FIG. Figure 5 As shown, the magnetically attracted metal part 900 moves to a position not directly facing the magnet 1000, the magnetically attracted metal part 900 is no longer attracted by the magnet 1000, and the spray arm support arm 100 returns to its initial state under the elastic force of the elastic part.

[0057] The metal piece 900 that can be magnetically attracted can be made of iron or a magnet 1000 .

[0058] In addition, the driving member may be configured as a magnet 1000 , and a metal member 900 that can be attracted by magnets may be configured on the top surface of the support 600 .

[0059] The magnet 1000 may be an electromagnet 1000, which can be turned on and off by program control.

[0060] In other embodiments, the driving member can also be set as a magnet 1000, and a magnet 1000 is also set on the top surface of the support 600. The driving member and the magnet 1000 on the top surface of the support 600 attract or repel each other to drive the spray arm support 100 to rotate around the axis of the shaft body 230.

[0061] Furthermore, a satellite spray arm 1100 is provided at the end of the spray arm support arm 100 .

[0062] like Figures 7 and 8 As shown, the satellite spray arm 1100 can be provided with spray holes of multiple angles and a larger range. When the angle of the spray arm support arm 100 changes, the satellite spray arm 1100 is driven together, and can cooperate with the spray arm support arm 100 to achieve a larger flushing area and range.

[0063] Furthermore, the satellite spray arm 1100 is detachably connected to the spray arm support arm 100 .

[0064] The spray arm support arm 100 and the satellite spray arm 1100 can be connected by snapping or threading. The detachable connection mode facilitates the disassembly and assembly of the spray arm support arm 100.

[0065] In this embodiment, the satellite spray arm 1100 is clamped on the spray arm support arm 100 by the satellite spray arm fixing member 1200 .

[0066] The satellite spray arm 1100 is formed by snapping together a satellite spray arm upper shell 1110 and a satellite spray arm lower shell 1120 . A satellite spray arm water inlet 112 is provided on the spray arm support arm 100 . The satellite spray arm water inlet 112 is communicated with the interior of the satellite spray arm 1100 .

[0067] The elastic member may be directly connected between the spray arm body 200 and the inner wall of the spray arm support arm 100 , or may be connected between the spray arm body 200 and the inner wall of the spray arm support arm 100 through the mounting member 300 .

[0068] Specifically, the spray arm further includes a mounting member 300 ; the mounting member 300 is connected to the inner wall of the spray arm support arm 100 ; the mounting member 300 is sleeved on the shaft 230 ; and the elastic member is connected between the spray arm body 200 and the mounting member 300 .

[0069] The inner wall of the spray arm support arm 100 is used to be sleeved on the outer side of the shaft body 230, the mounting member 300 extends into the inner wall of the spray arm support arm 100, and the mounting member 300 is fixedly connected to the inner wall of the spray arm support arm 100, the mounting member 300 is sleeved on the shaft body 230, the spray arm support arm 100 is sleeved on the mounting member 300, and the elastic member is connected between the spray arm body 200 and the mounting member 300. The mounting member 300 and the inner wall of the spray arm support arm 100 are fixedly connected to form an assembly, and when the spray arm support arm 100 rotates relative to the shaft body 230 around the axis of the shaft body 230, the mounting member 300 rotates relative to the shaft body 230 around the axis of the shaft body 230 along with the spray arm support arm 100.

[0070] The mounting member 300 and the inner wall of the spray arm support arm 100 may be connected in a non-detachable manner, such as bonding or welding, or in a detachable manner, such as snap-fitting or threaded connection.

[0071] In this embodiment, the mounting member 300 is detachably connected to the inner wall of the spray arm support arm 100. For example, a first buckle 310 is provided on the mounting member 300, and the first buckle 310 is engaged with the inner wall of the spray arm support arm 100, so that the mounting member 300 is fixedly mounted on the inner wall of the spray arm support arm 100. The detachable connection method facilitates the disassembly and assembly of the mounting member 300 and the spray arm support arm 100.

[0072] The elastic member may be an elastic pad, a spring, or any suitable form such as a torsion spring 400 . For example, one end of the spring is connected to the mounting member 300 , and the other end of the spring is connected to the spray arm body 200 .

[0073] Preferably, the elastic member is a torsion spring 400 ; the torsion spring 400 is sleeved on the shaft 230 , one end 410 of the torsion spring is connected to the mounting member 300 , and the other end 420 of the torsion spring is connected to the spray arm body 200 .

[0074] The torsion spring 400 serves as an intermediate component to connect the spray arm body 200 and the spray arm support arm 100 , and provides an initial elastic force for the rotation and swing of the spray arm support arm 100 .

[0075] One end 410 of the torsion spring is connected to the mounting member 300, and the connection mode can be fixed connection or detachable connection. The other end 420 of the torsion spring is connected to the spray arm body 200, and the connection mode can be fixed connection or detachable connection.

[0076] Specifically, the mounting member 300 is provided with a first slot 320 , and one end 410 of the torsion spring is engaged with the first slot 320 ; the spray arm body 200 is provided with a second slot 240 , and the other end 420 of the torsion spring is engaged with the second slot 240 .

[0077] One end 410 of the torsion spring is engaged with the first slot 320 to fix the one end 410 of the torsion spring to the mounting member 300, and the other end 420 of the torsion spring is engaged with the second slot 240 to fix the other end 420 of the torsion spring to the spray arm body 200, thereby installing the torsion spring 400 between the mounting member 300 and the spray arm body 200.

[0078] The second slot 240 may be disposed on the shaft 230 , or may be disposed at other suitable positions of the spray arm body 200 .

[0079] Furthermore, the spray arm also includes a limit member 500; the limit member 500 is connected to one end of the shaft body 230, and the limit member 500 has a limit protrusion; the spray arm support arm 100 is sleeved on the outside of the limit member 500, and the inner wall of the spray arm support arm 100 has a limit structure; along the axial direction of the shaft body 230, the limit structure is located on the side of the limit protrusion facing the inside of the spray arm body 200; the limit structure can abut against the limit protrusion.

[0080] The stopper 500 and one end of the shaft body 230 may be fixedly connected, such as by bonding or welding, or detachably connected, such as by clamping or threading. In this embodiment, the stopper 500 is sleeved on one end of the shaft body 230, and the stopper 500 is clamped with the shaft body 230. The shaft body 230 is provided with a second buckle 250, and the second buckle 250 is clamped with the stopper 500.

[0081] Along the axial direction of the shaft body 230, a limiting protrusion is arranged at one end of the limiting member 500 away from the inside of the spray arm body 200, and the limiting structure is located on the side of the limiting protrusion facing the inside of the spray arm body 200; when the spray arm support arm 100 moves along the axial direction of the shaft body 230 toward the outside of the spray arm body 200, the limiting structure follows the spray arm support arm 100 to move along the axial direction of the shaft body 230 toward the outside of the spray arm body 200 until the limiting structure abuts against the limiting protrusion, and the limiting protrusion can block the limiting structure to prevent the spray arm support arm 100 from falling off the shaft body 230.

[0082] The limiting structure can be directly fixedly connected to the inner wall of the spray arm support arm 100, or the limiting structure can be formed by the mounting member 300.

[0083] Specifically, the spray arm further includes a mounting member 300 ; the mounting member 300 is connected to the inner wall of the spray arm support arm 100 ; the mounting member 300 is sleeved on the outer side of the limiting member 500 , and the mounting member 300 forms a limiting structure.

[0084] The mounting member 300 is fixed to the inner wall of the spray arm support arm 100, and is sleeved on the outside of the shaft body 230, and is sleeved on the outside of the limiting member 500. Along the axial direction of the shaft body 230, the limiting member 500 has a limiting protrusion at one end away from the inside of the spray arm body 200. Along the axial direction of the shaft body 230, the mounting member 300 is located on the side of the limiting protrusion facing the inside of the spray arm body 200, and the mounting member 300 can abut against the limiting protrusion.

[0085] When the spray arm support arm 100 moves along the axial direction of the shaft body 230 toward the outside of the spray arm body 200, the mounting member 300 follows the spray arm support arm 100 and moves along the axial direction of the shaft body 230 toward the outside of the spray arm body 200 until the mounting member 300 abuts against the limiting protrusion. The limiting protrusion can block the mounting member 300, thereby preventing the spray arm support arm 100 and the mounting member 300 from falling off the shaft body 230.

[0086] Furthermore, the spray arm body 200 is provided with a first deflection limiter 222 , and the spray arm support arm 100 is provided with a second deflection limiter 121 . The first deflection limiter 222 is cooperatively connected with the second deflection limiter 121 to limit the rotation angle of the spray arm support arm 100 .

[0087] The first deflection limiting member 222 may be a limiting rib, and the second deflection limiting member 121 may be a limiting groove; or the first deflection limiting member 222 may be a limiting groove, and the second deflection limiting member 121 may be a limiting rib.

[0088] In this embodiment, a limiting rib is provided on the lower shell of the spray arm body 200, and a limiting groove is provided at the bottom of the spray arm support arm 100, and the limiting rib extends into the limiting groove. When the spray arm support arm 100 rotates clockwise around the axis of the shaft body 230 to a certain angle, the limiting rib and the limiting groove are offset, and the limiting rib reaches an extreme position, and the spray arm support arm 100 cannot continue to rotate; when the spray arm support arm 100 rotates counterclockwise around the axis of the shaft body 230 to a certain angle, the limiting rib and the limiting groove are offset, and the limiting rib reaches another extreme position, and the spray arm support arm 100 cannot continue to rotate, thereby limiting the rotation angle of the spray arm support arm 100, so that the spray arm support arm 100 rotates within a preset suitable angle range to improve the cleaning effect.

[0089] In this embodiment, the spray arm support arm 100 is formed by the spray arm support arm upper shell 110 and the spray arm support arm lower shell 120 being buckled together, and the spray arm support arm 100 is provided with a spray hole 111; the spray arm body 200 is formed by the spray arm body upper shell 210 and the spray arm body lower shell 220 being buckled together, and the bottom of the spray arm body lower shell 220 is provided with a water inlet 221.

[0090] The number of spray arm supports 100 is greater than or equal to 1, the spray hole 111 can be set on the spray arm support upper shell 110 or the spray arm support lower shell 120, the number of spray holes 111 is greater than or equal to 1, and the number of water inlets 221 is greater than or equal to 1.

[0091] Example 2

[0092] The dishwasher provided in this embodiment includes the spray arm provided in Embodiment 1. When the spray arm is not in operation, the elastic force of the elastic member causes the spray arm support arm 100 to face the initial position in the initial state; when the spray arm is in operation, the water flow pushes the spray arm to rotate around the axis of the spray arm body 200 as a whole, while the support 600 and the driving member can cooperate to drive the spray arm support arm 100 to rotate around the axis of the shaft body 230, thereby realizing the angle change of the spray arm support arm 100, so as to expand the washing range of the water column, make the water column wash the dishes at more angles, and improve the washing effect.

[0093] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A spray arm, characterized in that: It comprises a spray arm body (200) and a spray arm support arm (100); The spray arm body (200) is provided with a shaft body (230), and the spray arm support arm (100) is sleeved on the shaft body (230); a driving member is provided on the bottom surface of the spray arm support arm (100); a support (600) is provided below the driving member, and the support (600) and the driving member can cooperate to drive the spray arm support arm (100) to rotate around the axis of the shaft body (230); An elastic member is provided between the spray arm body (200) and the spray arm support arm (100), and the elastic force of the elastic member can drive the spray arm support arm (100) to rotate to an initial state.

2. The spray arm according to claim 1, characterized in that: The top surface of the support (600) has a convex structure (610); The driving member is an elastic structure (700), one end of which is connected to the bottom surface of the spray arm support arm (100), and the protruding structure (610) is capable of contacting and squeezing the other end of the elastic structure (700) to drive the spray arm support arm (100) to rotate around the axis of the shaft body (230).

3. The spray arm according to claim 2, characterized in that: There are a plurality of the protruding structures (610), and the plurality of the protruding structures (610) are arranged at intervals along the circumference of the support (600).

4. The spray arm according to claim 2, characterized in that: The longitudinal cross-section of the protruding structure (610) is trapezoidal.

5. The spray arm according to claim 2, characterized in that: One end of the elastic structure (700) is detachably connected to the bottom surface of the spray arm support arm (100).

6. The spray arm according to claim 1, characterized in that: A satellite spray arm (1100) is provided at the end of the spray arm support arm (100).

7. The spray arm according to claim 6, characterized in that: The satellite spray arm (1100) is detachably connected to the spray arm support arm (100).

8. The spray arm according to claim 1, characterized in that: The spray arm also includes a mounting member (300); The mounting member (300) is connected to the inner wall of the spray arm support arm (100); the mounting member (300) is sleeved on the shaft body (230); and the elastic member is connected between the spray arm body (200) and the mounting member (300).

9. The spray arm according to claim 1, characterized in that: The spray arm also includes a limiting member (500); The limiting member (500) is connected to one end of the shaft body (230), and the limiting member (500) has a limiting protrusion; the spray arm support arm (100) is sleeved on the outside of the limiting member (500), and the inner wall of the spray arm support arm (100) has a limiting structure; along the axial direction of the shaft body (230), the limiting structure is located on the side of the limiting protrusion facing the inside of the spray arm body (200); the limiting structure can abut against the limiting protrusion.

10. A dishwasher, characterized in that: The invention comprises the spray arm according to any one of claims 1 to 9.

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