WO2020042752A1 - 喷臂组件及具有其的洗涤电器 - Google Patents

喷臂组件及具有其的洗涤电器 Download PDF

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Publication number
WO2020042752A1
WO2020042752A1 PCT/CN2019/094275 CN2019094275W WO2020042752A1 WO 2020042752 A1 WO2020042752 A1 WO 2020042752A1 CN 2019094275 W CN2019094275 W CN 2019094275W WO 2020042752 A1 WO2020042752 A1 WO 2020042752A1
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WO
WIPO (PCT)
Prior art keywords
spray arm
ball
sleeve
base
outer sleeve
Prior art date
Application number
PCT/CN2019/094275
Other languages
English (en)
French (fr)
Inventor
费望春
赵利铭
张婧宜
熊好平
Original Assignee
佛山市顺德区美的洗涤电器制造有限公司
美的集团股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN201821401305.3U external-priority patent/CN208973737U/zh
Priority claimed from CN201810991115.XA external-priority patent/CN110859570A/zh
Priority claimed from CN201810990361.3A external-priority patent/CN110859569A/zh
Priority claimed from CN201821410963.9U external-priority patent/CN208973739U/zh
Application filed by 佛山市顺德区美的洗涤电器制造有限公司, 美的集团股份有限公司 filed Critical 佛山市顺德区美的洗涤电器制造有限公司
Priority to EP19855309.1A priority Critical patent/EP3845111A1/en
Publication of WO2020042752A1 publication Critical patent/WO2020042752A1/zh

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/14—Washing or rinsing machines for crockery or tableware with stationary crockery baskets and spraying devices within the cleaning chamber
    • A47L15/18—Washing or rinsing machines for crockery or tableware with stationary crockery baskets and spraying devices within the cleaning chamber with movably-mounted spraying devices
    • A47L15/22—Rotary spraying devices

Definitions

  • the present application relates to the technical field of household appliances, and in particular, to a spray arm assembly and a washing appliance having the same.
  • the main way to connect the spray arm to the spray arm base is through a snap-fit flange and a snap-fit connection, but this connection method will cause a larger gap between the spray arm and the spray arm base.
  • this connection method will cause a larger gap between the spray arm and the spray arm base.
  • water in the spray arm is easy to leak through the gap, which affects the cleaning effect.
  • the spray arm and the spray arm base move relative to each other, the friction mode between the two is sliding friction, so the lost hydrodynamic force is relatively large.
  • the snap-on connection method directly results in a larger size of the spray arm base and the vertical height of the spray arm, which wastes the inner space of the washing appliance and reduces the space for the parts to be cleaned inside the washing appliance.
  • the present application proposes a spray arm assembly, which can reduce the friction between the spray arm and the spray arm seat.
  • the present application also proposes a washing appliance having the spray arm assembly.
  • the spray arm assembly includes: a spray arm having a spray arm thread; a spray arm base, the spray arm is connected to the spray arm base, and the spray arm is rotatable relative to the spray arm base;
  • a ball assembly which is arranged at the connection and cooperation between the spray arm and the spray arm seat, and the ball assembly includes a bearing base and a ball, and the ball is rotatably disposed on the bearing base;
  • the bearing base is provided with a ball thread which is matched with the spray arm thread.
  • the spray arm and the spray arm base are connected by a ball assembly, so that the friction between the spray arm and the spray arm base can be reduced, which is beneficial to reduce the hydrodynamic loss. It can also reduce the height dimension of the spray arm assembly, thereby leaving more space for the placement of the parts to be cleaned and increasing the capacity of the washing appliance.
  • the spray arm thread is a spray arm external thread
  • the ball thread is a ball internal thread that cooperates with the spray arm internal thread
  • the spray arm includes: a spray arm body and a spray arm connection sleeve, the spray arm connection sleeve is disposed on a lower side of the spray arm body, and the spray arm connection sleeve and the spray arm There is a spray arm chamber in the arm body, and the spray arm seat has a spray arm seat chamber in communication with the spray arm chamber.
  • the spray arm external thread is provided on the outer peripheral surface of the spray arm connection sleeve.
  • the bearing base includes: an outer sleeve, the outer sleeve is sleeved on the outside of the spray arm connection sleeve, and the ball internal thread is provided on the inner peripheral surface of the outer sleeve.
  • the load bearing base further includes: an intermediate sleeve, which is disposed between the outer sleeve and the inner sleeve, wherein the intermediate sleeve is provided with a plurality of ball holes, and Balls are installed in the ball holes.
  • the load-bearing base further includes: an inner sleeve, which is adapted to be connected with the spray arm seat, and the spray arm seat and the inner sleeve are detachably connected.
  • an outer sleeve ball groove adapted to cooperate with the ball is provided on an inner peripheral surface of the outer sleeve, and an inner sleeve adapted to cooperate with the ball is provided on an outer peripheral surface of the inner sleeve.
  • an inner sleeve external thread is provided on the outer peripheral surface of the inner sleeve, and a spray suitable for cooperating with the outer thread of the inner sleeve is provided on the inner peripheral surface of the spray arm seat.
  • the arm seat is internally threaded, and the internal sleeve external thread is disposed below the ball groove of the internal sleeve.
  • the spray arm seat is at least partially located inside the inner sleeve, and a top of the spray arm seat is provided with a spray arm seat buckle, and the spray arm seat buckle is adapted to be locked in The upper surface of the inner sleeve.
  • the top of the spray arm base has a plurality of grooves, and the opening direction of the groove is parallel to the axial direction of the spray arm base, and the spray arm base buckles upward from the bottom wall of the groove. Extending, and two sides of the spray arm seat buckle are separated from two side walls of the groove, and a top end of the spray arm seat buckle is provided with a hook facing the inner sleeve.
  • the ball hole is provided at the bottom of the intermediate sleeve, the ball hole is a superior arc hole, and a ball access opening is formed at the bottom notch.
  • a weakening groove is provided between two adjacent ball holes, and a weakening groove pillar is provided in the weakening groove.
  • the outer sleeve includes: an outer sleeve peripheral wall and an outer sleeve bottom wall, the outer sleeve bottom wall is disposed at an end of the outer sleeve peripheral wall away from the spray arm, and the jacket
  • the bottom wall of the cylinder extends inward along the radial direction of the peripheral wall of the outer sleeve, and the balls are disposed above the bottom wall of the outer sleeve.
  • the spray arm connection sleeve includes a connection sleeve peripheral wall and a connection sleeve bottom wall extending inwardly along the radial direction of the connection sleeve peripheral wall, and the connection sleeve bottom wall is disposed away from the connection sleeve peripheral wall away from the connection sleeve.
  • the inner sleeve and the middle sleeve are disposed below the bottom wall of the connection sleeve.
  • the inner diameter of the bottom wall of the connection sleeve is equal to the inner diameter of the inner sleeve.
  • the spray arm base has a spray arm base water inlet hole, and an inner diameter of the spray arm base water inlet hole is equal to an inner diameter of the inner sleeve.
  • the gap between the upper surface of the inner sleeve and the lower surface of the bottom wall of the connection sleeve is L1, and L1 satisfies the relationship: 0mm ⁇ L1 ⁇ 0.5mm.
  • the spray arm thread is an internal thread of the spray arm
  • the carrier base includes: an outer sleeve, an inner sleeve, and the outer sleeve is sleeved on the outside of the inner sleeve.
  • the ball thread is a ball external thread matched with the inner thread of the spray arm, and the ball external thread is disposed on the outer sleeve or the inner sleeve.
  • the inner sleeve is provided with a plurality of ball holes, the balls are installed in the ball holes, and the ball external threads are provided on the outer peripheral surface of the outer sleeve.
  • the spray arm base comprises: a spray arm base body, and an outer peripheral surface of the spray arm base body is provided with a spray arm base ball groove adapted to cooperate with the ball.
  • an outer sleeve ball groove suitable for cooperating with the balls is provided on an inner peripheral surface of the outer sleeve, and the outer sleeve ball groove and the spray arm seat ball groove are both circumferential annular grooves. .
  • the outer sleeve includes: an outer sleeve peripheral wall and an outer sleeve bottom wall, the outer sleeve bottom wall is disposed at an end of the outer sleeve peripheral wall away from the spray arm, and the jacket
  • the bottom wall of the cylinder extends inward along the radial direction of the peripheral wall of the outer sleeve, and the balls are disposed above the bottom wall of the outer sleeve.
  • the spray arm base further includes: a spray arm base flange extending outward in a radial direction of the spray arm base body, and the spray arm base flange is disposed below the spray arm base body, A plurality of ribs are provided between the outer peripheral surface of the spray arm base body and the spray arm base flange, and the bottom wall of the outer sleeve is disposed above the ribs.
  • the ball hole is provided at the bottom of the inner sleeve, the ball hole is a superior arc hole, and a ball access opening is formed at the bottom gap.
  • a weakening groove is provided between two adjacent ball holes, and a weakening groove pillar is provided in the weakening groove.
  • the outer sleeve is provided with a plurality of ball holes, the balls are installed in the ball holes, and the ball external threads are provided on the outer peripheral surface of the inner sleeve.
  • the spray arm base includes: a spray arm base water inlet shaft, a spray arm base peripheral wall, and a spray arm base ring wall disposed between the spray arm base water inlet shaft and the spray arm base peripheral wall, the The spray arm seat peripheral wall is disposed above the spray arm seat ring wall, the spray arm seat water inlet shaft is disposed below the spray arm seat ring wall, and the space surrounded by the spray arm seat peripheral wall is formed to be suitable for receiving The accommodating space of the ball assembly is located above the annular wall of the spray arm seat.
  • the inner diameter of the water inlet shaft of the spray arm seat is equal to the inner diameter of the inner sleeve.
  • an inner sleeve ball groove adapted to cooperate with the ball is provided on an outer peripheral surface of the inner sleeve, and a spray nozzle adapted to cooperate with the ball is provided on an inner peripheral surface of a peripheral wall of the spray arm seat.
  • the arm seat ball groove, the inner sleeve ball groove and the spray arm seat ball groove are all circumferential annular grooves.
  • the inner sleeve and the outer sleeve are disposed above the spray arm seat ring wall, and a gap between the lower surface of the inner sleeve and the upper surface of the spray arm seat ring wall Is L1, and L1 satisfies the relationship: 0mm ⁇ L1 ⁇ 0.5mm.
  • a rib is provided between the outer peripheral surface of the water inlet shaft of the spray arm seat and the annular wall of the spray arm seat.
  • the spray arm includes: a spray arm body and a spray arm connection sleeve, the spray arm connection sleeve is disposed on a lower side of the spray arm body, and the spray arm connection sleeve and the spray arm There is a spray arm chamber in the arm body, and the spray arm seat has a spray arm seat chamber in communication with the spray arm chamber.
  • the spray arm internal thread is provided on the inner periphery of the spray arm connection sleeve. surface.
  • a washing appliance according to another embodiment of the present application includes the above-mentioned spray arm assembly.
  • FIG. 1 is a schematic diagram of a third embodiment of a spray arm assembly
  • FIG. 2 is a schematic half sectional view of a third embodiment of the spray arm assembly
  • FIG. 3 is a partially enlarged view at P in FIG. 3; FIG.
  • FIG. 4 is an exploded schematic view of a third embodiment of the spray arm assembly
  • FIG. 5 is a schematic half sectional view of a third embodiment of the ball assembly
  • FIG. 6 is an exploded half-section schematic diagram of the ball assembly at Q in FIG. 4;
  • FIG. 7 is a schematic half cross-sectional view of an intermediate sleeve.
  • FIG. 8 is a schematic perspective view of a first embodiment of a spray arm assembly
  • FIG. 9 is a schematic half perspective view of a first embodiment of a spray arm assembly
  • FIG. 10 is a schematic half sectional view of a first embodiment of a spray arm assembly
  • FIG. 11 is a partially enlarged view at A in FIG. 10; FIG.
  • Figure 12 is a schematic assembly diagram of the ball assembly and the spray arm seat
  • FIG. 13 is an exploded schematic view of a ball assembly and a spray arm base
  • FIG. 14 is a schematic perspective view of a half-section of the ball assembly and the spray arm seat
  • FIG. 15 is a schematic half sectional view of a ball assembly and a spray arm seat
  • 16 is a schematic half sectional view of a second embodiment of the spray arm assembly
  • FIG. 17 is a partially enlarged view of a portion B in FIG. 16; FIG.
  • FIG. 18 is an exploded view of the first embodiment of the spray arm assembly.
  • Spray arm assembly 1000 spray arm 100, spray arm chamber 130, spray arm body 110, spray arm connection sleeve 120, spray arm external thread 121, connection sleeve peripheral wall 122, connection sleeve bottom wall 123, spray arm seat 200, spray arm Seat cavity 280, spray arm seat flange 220, spray arm seat internal thread 2200, ball assembly 300, load base 3100, outer sleeve 310, ball internal thread 3111, outer sleeve ball groove 313, outer sleeve peripheral wall 311, Outer sleeve bottom wall 312, inner sleeve 320, inner sleeve ball groove 321, inner sleeve external thread 3122, intermediate sleeve 370, ball hole 350, weakening groove 360, weakening groove post 361, ball 330, spray arm inside Thread 121, spray arm base body 210, rib plate 230, spray arm base inlet shaft 240, spray arm base peripheral wall 250, spray arm base ring wall 260, spray arm base ball groove 270,
  • the terms “installation,” “connected,” “connected,” and “fixed” should be broadly understood unless otherwise specified and limited. For example, they can be fixed connections or removable connections. , Or integrated; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of the two elements or the interaction between the two elements.
  • installation should be broadly understood unless otherwise specified and limited. For example, they can be fixed connections or removable connections. , Or integrated; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of the two elements or the interaction between the two elements.
  • the specific meanings of the above terms in this application can be understood according to specific situations.
  • the spray arm assembly 1000 according to the embodiment of the present application will be described in detail below with reference to FIGS. 1 to 18.
  • the spray arm assembly 1000 can be used in washing appliances.
  • the structure of the spray arm assembly 1000 will be described below using the spray arm assembly 1000 in a dishwasher as an example.
  • the spray arm assembly 1000 may include: a spray arm 100, a spray arm base 200, and a ball assembly 300.
  • the spray arm 100 has a spray arm thread, which provides a possibility for the connection of the spray arm 100 and other components.
  • the spray arm 100 is connected to the spray arm base 200, and the spray arm 100 is rotatable relative to the spray arm base 200, and the spray arm base 200 is located in the spray Below the arm 100, the spray arm base 200 is provided to provide a connection interface for the spray arm 100.
  • the spray arm base 200 can also serve as the water inlet pipe of the spray arm 100 .
  • the spray arm 100 is provided with a water spray hole and a drive hole.
  • the spray arm 100 When the water pressure in the spray arm 100 reaches a certain value, the spray arm 100 starts to pass through the water spray hole and the drive hole (not shown in the figure) The water column is ejected, and the spray arm 100 is rotated by the reaction force when the water column is ejected. As the water column is continuously ejected from the water spray hole and the drive hole, the spray arm 100 is continuously rotated and sprayed from the water spray hole and the drive hole. With the rotation of the spray arm 100, the water column will be sprayed onto the surface of the dishware or the inner wall of the dishwasher, and the dirt on the dishware or the inner wall of the dishwasher will be washed, thereby completing the dishwashing work of the dishwasher.
  • the direction and position of the water column sprayed by the spray arm 100 on the tableware are multi-directional, which reduces the dead angle and is easier to clean. Due to the large coverage of the water flow, the cleaning time will be correspondingly reduced, which is beneficial to shorten the cleaning time.
  • the ball assembly 300 is disposed at the joint between the spray arm 100 and the spray arm base 200, and the ball assembly 300 may include a bearing base 3100 and a ball 320.
  • the ball 320 is rotatably disposed on the bearing base 3100, and the bearing base 3100 is provided with Ball threads that mate with the spray arm threads.
  • the carrier base 3100 may be a single part, or may be a component including a plurality of parts.
  • the carrier base 3100 is composed of more than one component, and a part of the carrier base 3100 is fixedly connected to the spray arm 100, and another part of the carrier base 3100 is fixedly connected to the spray arm base 200, so that spraying can be achieved.
  • the arm 100 is indirectly connected to the spray arm base 200.
  • the ball 320 is disposed in the middle of the carrier base 3100, and the ball 320 can rotate in the carrier base 3100.
  • the relative rotation between the spray arm 100 and the spray arm base 200 can be achieved through the ball 320, so that the spray arm 100 and the spray arm base can be changed.
  • the form of friction between 200 changes from the previous sliding friction to rolling friction, which is beneficial to reducing the friction between the spray arm 100 and the spray arm base 200.
  • the ball assembly 300 By setting the ball assembly 300, when the spray arm 100 and the spray arm base 200 rotate relative to each other, the friction form between the spray arm 100 and the spray arm base 200 is rolling friction, which is no longer the previous sliding friction. In this way, the rolling friction force The resistance to the spray arm 100 when rotating is small, so the hydrodynamic loss due to friction can be reduced, and the utilization rate of the hydrodynamic force can be improved. At the same time, the speed of the spray arm 100 relative to the spray arm base 200 is relatively high. Therefore, by providing the ball assembly 300, the smoothness of the spray arm 100 during rotation can be improved, thereby reducing the noise of the dishwasher.
  • the spray arm 100 and the spray arm base 200 are connected by a ball assembly 300, which can reduce the spray arm 100 and the spray arm base 200.
  • the distance between them reduces the height dimension of the spray arm assembly 1000, saves the internal space of the dishwasher, and leaves more space for the tableware, thereby increasing the dishware capacity of the dishwasher. Increase the internal load of the dishwasher by 10mm-40mm.
  • the spray arm 100 and the ball assembly 300 are connected by threads, which is convenient for disassembly and fixing.
  • the spray arm thread is provided on the spray arm 100, and provides an interface for the connection between the spray arm 100 and the ball assembly 300.
  • the spray arm 100 and the spray arm base 200 are connected through the ball assembly 300 Therefore, the friction between the spray arm 100 and the spray arm base 200 can be reduced, which is conducive to reducing the hydrodynamic loss, improving the utilization rate of the hydrodynamic force, and ensuring that the pressure when the water is sprayed from the spray hole of the spray arm Large, is conducive to improving the washing effect of dishwashers on dishes.
  • the height dimension of the spray arm assembly 1000 can also be reduced, thereby saving the internal space of the dishwasher, leaving more space for tableware placement, and increasing the dishware capacity of the dishwasher.
  • the spray arm assembly 1000 according to the embodiment of the present application is described in detail below with reference to FIGS. 1 to 7.
  • the spray arm thread is the spray arm external thread 121
  • the ball thread is the ball internal thread 3111 matched with the spray arm internal thread 121
  • the bearing base 3100 is provided with a ball matched with the spray arm external thread 121.
  • the external parts of the bearing base 3100 are provided with ball internal threads 3111 that cooperate with the spray arm external threads 121, as shown in FIGS. 2-3, and 6, the ball internal threads 3111 are provided on the external parts of the bearing base 3100.
  • the external thread 121 of the spray arm and the internal thread 3111 of the ball cooperate to realize the fixed connection of the bearing base 3100 and the spray arm 100, and the internal parts of the load base 3100 are fixedly connected to the spray arm seat 200.
  • the ball 330 is provided on the bearing between the internal parts and external parts of the base body 3100, the internal parts and external parts of the bearing base 3100 can be relatively rotated, thereby ensuring that the spray arm 100, the spray arm base 200 can be relatively rotated, the spray arm 100, the spray arm base 200, and the ball assembly 300.
  • the structure of the three connections is simple and stable.
  • the spray arm 100 may include: a spray arm body 110 and a spray arm connection sleeve 120, the spray arm connection sleeve 120 is disposed on the lower side of the spray arm body 110, and the spray arm connection sleeve 120 is provided for convenience
  • the spray arm 100 is connected to the spray arm base 200, which ensures that the spray arm 100 and the spray arm base 200 can be reliably connected as a whole.
  • the spray arm connecting sleeve 120 and the spray arm body 110 have a spray arm chamber 130 in communication, and the spray arm seat 200 has a spray arm chamber 280 in communication with the spray arm chamber 130, thereby ensuring the water supply of the dishwasher.
  • the water can smoothly enter the spray arm chamber 130 through the spray arm seat chamber 280, and then the water is sprayed onto the surface of the dishware through the spray holes and drive holes on the spray arm 100, thereby completing the operation of washing the tableware.
  • the water pressure in the spray arm chamber 130 becomes higher and higher.
  • the reaction force generated by the water column sprayed from the driving hole of the spray arm 100 is also greater, and the spray arm 100 The faster the rotation speed, the greater the force of the sprayed water on the tableware, which is conducive to cleaning the stains on the tableware. Therefore, by setting the spray arm chamber 130, the washing effect of the dishwasher can be better. .
  • the load-bearing base 3100 includes three parts, which are: an outer sleeve 310 (that is, the external parts of the load-bearing base 3100 mentioned above), and an inner sleeve 320 (that is, the load-bearing base 3100 mentioned earlier). Internal parts) and intermediate sleeve 370.
  • the outer sleeve 310 is sleeved outside the spray arm connection sleeve 120, the ball internal thread 3111 is provided on the inner peripheral surface of the outer sleeve 310, and the spray arm external thread 121 is provided on the outer peripheral surface of the spray arm connection sleeve 120.
  • the outer sleeve 310 and the spray arm connection sleeve 120 can be connected as a whole, thereby ensuring that the load bearing base 3100 and the spray arm 100 are reliably connected as a whole.
  • the inner sleeve 320 is disposed inside the outer sleeve 310 and the middle sleeve 370.
  • the inner sleeve 320 is fixedly connected to the spray arm base 200 through the inner sleeve 320 to ensure that the supporting base 3100 and the spray arm base 200 are reliably connected as a whole.
  • the middle sleeve 370 is provided between the outer sleeve 310 and the inner sleeve 320.
  • the middle sleeve 370 is provided with a plurality of ball holes 350, the ball 330 is provided in the ball hole 350, and the ball 330 is rotatably installed in the ball hole 350.
  • the ball holes 350 provide support for the fixing of the ball 330, ensure that the relative positions of the plurality of balls 330 remain unchanged, and prevent collisions and squeezing between the plurality of balls 330, thereby improving the working stability of the ball assembly 300, thereby The smoothness of the spray arm 100 can be further improved.
  • the number of the ball holes 350 is the same as the number of the balls 330.
  • the ball 330 protrudes from the inner peripheral surface and the outer peripheral surface of the intermediate sleeve 370 in the radial direction of the intermediate sleeve 370. That is, the diameter of the ball 330 is larger than the wall thickness of the intermediate sleeve 370.
  • the outer side of the ball 330 protrudes outward from the outer peripheral surface of the middle sleeve 370, and the inner side of the ball 330 protrudes from the inner peripheral surface of the middle sleeve 370 inward.
  • the inner surface of 310 is in rolling contact.
  • the inner side of ball 330 can be in rolling contact with the outer surface of inner sleeve 320.
  • the ball 330 is in rolling contact with outer sleeve 310 and inner sleeve 320.
  • outer sleeve 310 and spray The arm 100 is fixedly connected, and the inner sleeve 320 is fixedly connected to the spray arm base 200. Therefore, the ball 330 indirectly provides support for the connection between the spray arm 100 and the spray arm base 200.
  • the spray arm 100 and the spray arm base 200 are relatively rotated, The spray arm 100 and the spray arm base 200 are indirectly contacted through the balls 330, so there is rolling friction between the spray arm 100 and the spray arm base 200.
  • the diameter of the balls 330 is 3mm-8mm, and the number of the balls 330 is 4-12.
  • an outer sleeve ball groove 313 suitable for cooperating with the ball 330 is provided on an inner peripheral surface of the outer sleeve 310, and a ball internal thread 3111 is provided above the outer sleeve ball groove 313.
  • the outer sleeve surface of the inner sleeve 320 is provided with an inner sleeve ball groove 321 suitable for cooperation with the ball 330.
  • the outer sleeve ball groove 313, inner The sleeve ball groove 321 is a circumferential annular groove, thereby ensuring the smoothness of the entire rotation of the spray arm 100.
  • the ball 330 is in rolling contact with the outer sleeve ball groove 313 and the inner sleeve ball groove 321, and the friction force is small.
  • the diameter of the outer sleeve ball groove 313 and the inner sleeve ball groove 321 may be equal to the diameter of the ball 330, or may be slightly larger than the diameter of the ball 330, thereby ensuring the ball 330 and the outer sleeve ball
  • the grooves 313 and the inner sleeve ball grooves 321 are well matched.
  • the outer side of the ball 330 is in contact with the outer sleeve ball groove 313, and the inner side of the ball 330 is in contact with the inner sleeve ball groove 321, thereby completing the connection between the outer sleeve 310 and the inner sleeve 320, and the outer sleeve 310 and the spray arm 100 are in turn Fixedly connected, the inner sleeve 320 is fixedly connected to the spray arm base 200 again, thereby completing the indirect connection of the spray arm 100 and the spray arm base 200.
  • the positions of the outer sleeve ball groove 313, the inner sleeve ball groove 321, and the ball hole 350 correspond to each other, which can prevent the track of the ball 330 from sliding when the spray arm 100 rotates, and the outer sleeve ball groove 313 and the inner sleeve ball groove 321 The trajectories are different, thereby being squeezed, which makes the spray arm 100 unable to rotate.
  • the spray arm seat 200 and the inner sleeve 320 are detachably connected.
  • an inner sleeve external thread 3122 is provided on the outer peripheral surface of the inner sleeve 320, and a spray arm adapted to cooperate with the inner sleeve external thread 3122 is provided on the inner peripheral surface of the spray arm seat 200.
  • the internal thread 2200 of the seat is connected with the internal thread 2200 of the spray arm seat through the external thread 3122 of the inner sleeve.
  • the internal sleeve 320 and the spray arm seat 200 are reliably connected as a whole.
  • the thread between the spray arm seat 200 and the ball assembly 300 is threaded. It is connected for easy disassembly and fixing.
  • the inner sleeve external thread 3122 is disposed below the inner sleeve ball groove 321, and provides space for the ball 330 to smoothly rotate the inner sleeve ball groove 321.
  • the ball internal thread 3111 is disposed above the outer sleeve ball groove 313, and the inner sleeve external thread 3122 is disposed below the inner sleeve ball groove 321. Therefore, the outer sleeve 310 and the spray arm 100 The fixed position is located above, and the matching position of the inner sleeve 320 and the spray arm base 200 is located below, thereby making full use of the height space to prevent the axial dimension of the joint between the spray arm 100 and the spray arm base 200 from being too large.
  • the ball hole 350 is disposed at the bottom of the intermediate sleeve 370, the ball hole 350 is an excellent arc hole, and a ball access opening is formed at the bottom gap of the ball hole 350, and the ball 330 passes through the ball
  • the access port enters or exits from the ball hole 350, thereby facilitating the installation and removal of the ball 330 in the ball hole 350.
  • the superior arc hole is a hole with a center angle greater than 180 ° and less than 360 °, so that most of each ball 330 can be located in the ball hole 350 to prevent the ball 330 from falling out of the ball hole 350 after installation.
  • the ball access opening can be opened by external force, and then the ball 330 is installed in the ball hole 350 through the ball access opening, and then the external force is removed, and the elastic deformation of the ball hole 350 disappears, and the ball hole 350 The original state is restored. At this time, the ball hole 350 tightly wraps the ball 330, so that the installation of the ball 330 in the ball hole 350 is more firm and reliable.
  • the plurality of ball holes 350 may be uniformly distributed along the circumferential direction of the intermediate sleeve 370, so that the relative rotation of the spray arm 100 and the spray arm base 200 may be more stable.
  • the number of the balls 330 is an even number, so that the force of the ball assembly 300 can be balanced and the stress concentration phenomenon can be alleviated.
  • a weakening groove 360 is provided between two adjacent ball holes 350.
  • the rigidity between two adjacent ball holes 350 can be made smaller, thereby When the ball 330 is installed, the ball hole 350 is easily deformed, thereby reducing the difficulty of installing or removing the ball 330.
  • a weakening groove column 361 is provided in the weakening groove 360.
  • the central axis of the weakening groove column 361 is parallel to the central axis of the intermediate sleeve 370, thereby facilitating the processing of the intermediate sleeve 370.
  • the role of the intermediate sleeve 370 mainly has three points: (1) By opening the ball hole 350 in the intermediate sleeve 370 and installing the ball 330 in the ball hole 350, the position of the ball 330 can be fixed and limited to prevent the ball 330 from accumulating. (2) play a role in isolating food residues, prevent small food residues from entering the ball grooves, causing friction; (3) play a strengthening role, and can isolate the spray arm 100 vibration, to prevent the spray arm 100 from shaking seriously.
  • the outer sleeve 310 may include: an outer sleeve peripheral wall 311 and an outer sleeve bottom wall 312.
  • the outer sleeve bottom wall 312 is disposed on the outer sleeve peripheral wall 311 away from the spray arm 100. One end, as shown in FIG.
  • the outer sleeve bottom wall 312 is disposed at the lower end of the outer sleeve peripheral wall 311, and the outer sleeve bottom wall 312 extends inward along the radial direction of the outer sleeve peripheral wall 311, and the outer sleeve ball groove 313 is provided At the boundary between the outer sleeve bottom wall 312 and the outer sleeve peripheral wall 311, in this way, the ball 330 is disposed above the outer sleeve bottom wall 312, so that the outer sleeve bottom wall 312 can protect the ball 330 to prevent The exposure of the ball 330 to the outside affects the service life of the ball 330.
  • the top of the spray arm base 200 has a spray arm base flange 220, the spray arm base flange 220 extends outward in the radial direction of the spray arm base 200, and the spray arm base flange 220 It is set below the outer sleeve bottom wall 312, and the gap between the upper surface of the spray arm seat flange 220 and the lower surface of the outer sleeve bottom wall 312 is L2, and L2 satisfies the relationship: 0mm ⁇ L2 ⁇ 0.5mm Therefore, when the spray arm 100 and the spray arm base 200 rotate relatively, it is possible to avoid sliding friction between the lower surface of the outer sleeve bottom wall 312 and the upper surface of the spray arm base flange 220, that is, the outer There is no friction between the sleeve 310 and the spray arm base 200.
  • the gap between the lower surface of the outer sleeve bottom wall 312 and the upper surface of the spray arm base flange 220 is small, which can prevent leftovers or other contaminants from entering the gap and increase the gap between the spray arm 100 and the spray arm base 200.
  • the friction force even stuck the spray arm 100, and when the spray arm 100 was tilted, the outer sleeve 310 could quickly contact the spray arm base 200, thereby preventing the spray arm 100 from further tilting.
  • the gap L2 between the upper surface of the spray arm seat flange 220 and the lower surface of the outer sleeve bottom wall 312 may be 0.1 mm, or 0.2 mm or 0.3 mm.
  • the spray arm connection sleeve 120 may include: a connection sleeve peripheral wall 122 and a connection sleeve bottom wall 123.
  • the connection sleeve bottom wall 123 extends inward along the radial direction of the connection sleeve peripheral wall 122, and the connection sleeve The bottom wall 123 is disposed at an end of the connection sleeve peripheral wall 122 far from the spray arm body 110.
  • the connection sleeve bottom wall 123 is disposed at the lower end of the connection sleeve peripheral wall 122, and the inner sleeve 320 and the intermediate sleeve 370 are disposed at the connection. Cover the bottom of the bottom wall 123.
  • the inner diameter of the bottom wall 123 of the connection sleeve is equal to the inner diameter of the inner sleeve 320, and the two are aligned, there are no abrupt steps, and water pressure loss can be avoided.
  • buffering and transition can be performed at the bottom wall 123 of the connection sleeve, which can avoid sudden changes in water flow velocity and affect the rotation stability of the spray arm 100.
  • the bottom of the spray arm base 200 has an inner flange of the spray arm base, the inner flange of the spray arm base extends inward in the radial direction of the spray arm base 200, and the inner sleeve 320 is located above the inner flange of the spray arm base, inside the spray arm base
  • the center of the flange has a water inlet hole of the spray arm seat, and the inner diameter of the water inlet hole of the spray arm seat is also equal to the inner diameter of the inner sleeve 320.
  • the two are aligned and there are no abrupt steps to avoid water pressure loss.
  • the sudden change of the water flow velocity can also be avoided to affect the rotation stability of the spray arm 100.
  • the inner diameter of the bottom wall 123 of the connection sleeve and the inner sleeve can be equal, which can ensure that the water flow velocity in the spray arm seat 200, the inner sleeve 320 and the bottom wall 123 of the connection sleeve is equal, and because the inner diameter of the bottom wall 123 of the connection sleeve and the connection sleeve.
  • the inner diameter of the peripheral wall 122 is not much different, so when water enters the connecting sleeve peripheral wall 122 through the bottom wall 123 of the connection sleeve, the change of the water flow speed is small, and the water flow velocity entering the spray arm chamber 130 is stable, thereby avoiding a drastic change in the water flow speed.
  • the gap between the upper surface of the inner sleeve 320 and the lower surface of the bottom wall 123 of the connection sleeve is L1, and L1 satisfies the relationship: 0mm ⁇ L1 ⁇ 0.5mm. Therefore, the spray arm 100 and the spray arm base 200 rotate relatively In this case, sliding friction between the upper surface of the inner sleeve 320 and the lower surface of the bottom wall 123 of the connection sleeve can be avoided, that is, there is no friction between the inner sleeve 320 and the spray arm connection sleeve 120.
  • the inner The gap between the upper surface of the sleeve 320 and the lower surface of the bottom wall 123 of the connecting sleeve is small, which can prevent leftovers or other contaminants from entering the gap and increase the friction between the spray arm 100 and the spray arm seat 200 and even become stuck.
  • the spray arm 100 can also avoid hydrodynamic loss caused by excessive water entering between the inner sleeve 320 and the bottom wall 123 of the connection sleeve, and when the spray arm 100 is tilted, the inner sleeve 320 can quickly connect with the spray arm connection sleeve 120 Contact, thereby preventing the spray arm 100 from further tilting.
  • the gap L1 between the upper surface of the inner sleeve 320 and the lower surface of the bottom wall 123 of the connection sleeve may be 0.1 mm, or 0.2 mm or 0.3 mm.
  • the height dimension of the spray arm connection sleeve 120 can be reduced, thereby reducing the overall height dimension of the spray arm assembly 1000, leaving room for tableware More space.
  • the ball 330 may be a plastic ball or a stainless steel ball, because the working environment of the spray arm assembly 1000 is filled with water, and the spray arm assembly 1000 has been in a hot and humid environment for a long time, which may cause the ball 330 to rust and jam, and the plastic ball or stainless steel The ball has a strong anti-corrosion ability, which can effectively slow down or even prevent the ball 330 from rusting.
  • the spray arm base 200 is at least partially located inside the inner sleeve 320, and the top of the spray arm base 200 is provided with a spray arm base buckle, and the spray arm base buckle is adapted to be clamped to the inner sleeve.
  • the top surface of 320 By setting the spray arm base buckle on the top of the spray arm base 200, the spray arm base 200 and the inner sleeve 320 can be reliably connected as a whole, and the spray arm base 200 and the ball assembly 300 can be connected and disconnected, which is convenient for the spray arm. Installation of component 1000.
  • the top of the spray arm base 200 has a plurality of grooves, the opening direction of the groove is parallel to the axis direction of the spray arm base 200, the spray arm base buckle extends upward from the bottom wall of the groove, and the spray arm base buckle The two sides of the groove are separated from the two side walls of the groove, thereby ensuring that the spray arm seat buckle can be elastically deformed in the groove.
  • the top of the spray arm base buckle is provided with a hook facing the inner sleeve 320, and the hook is adapted to hook the top of the inner sleeve 320, thereby limiting the relative axial position of the spray arm base 200 and the inner sleeve 320.
  • the inner peripheral surface of the inner sleeve 320 presses the hook of the spray arm base buckle, so that the spray arm base buckle is deformed toward the interior of the spray arm base 200 to ensure spraying.
  • the arm seat buckle can reach from the bottom end of the inner sleeve 320 to the top end of the inner sleeve 320 (ie, from bottom to top).
  • the spray arm seat buckle When the spray arm seat clip passes over the top of the inner sleeve 320, the spray arm seat buckle is subjected to The squeezing force disappears, and under the action of the elastic force of the spray arm seat buckle, the spray arm seat buckle approaches the inner sleeve 320, so that the hook catches the top of the inner sleeve 320.
  • the inner sleeve 320 When the inner sleeve 320 needs to be separated from the spray arm base 200, it is only necessary to lift the spray arm 100 upward. The top end of the inner sleeve 320 squeezes the hook so that the hook retracts inside the inner sleeve 320 and continues to lift the spray arm 100. , The inner sleeve 320 can be separated from the spray arm base 200.
  • the load-bearing substrate 3100 of the present application may have various deformation modes, and these deformation modes fall within the protection scope of the present application.
  • Several modifications of the carrier substrate 3100 according to the embodiment of the present application are summarized below with reference to FIG. 3.
  • the carrier base 3100 may only include: an outer sleeve 310, that is, compared with the embodiment of FIG. 3 described above, the middle sleeve 370 and the inner sleeve 320 are reduced.
  • the ball 330 to directly cooperate with the outer sleeve 310 and the spray arm base 200, the rolling connection of the spray arm connection sleeve 120 and the spray arm base 200 can also be achieved.
  • the spray arm base 200 is provided with a spray arm base ball groove suitable for cooperation with the ball 330 on the outer peripheral surface thereof.
  • the carrier base 3100 may only include the outer sleeve 310 and the middle sleeve 370, that is, the inner sleeve 320 is reduced compared to the embodiment of FIG. 3 described above.
  • the ball 330 to directly cooperate with the outer sleeve 310 and the spray arm base 200, the rolling connection of the spray arm connection sleeve 120 and the spray arm base 200 can also be achieved.
  • the spray arm base 200 is provided with a spray arm base ball groove suitable for cooperation with the ball 330 on the outer peripheral surface thereof.
  • the carrier base 3100 may include only an outer sleeve 310 and an inner sleeve 320, that is, the middle sleeve 370 is reduced compared to the embodiment of FIG. 3 described above.
  • the ball 330 to directly cooperate with the outer sleeve 310 and the inner sleeve 320, the rolling connection of the spray arm connecting sleeve 120 and the spray arm base 200 can also be achieved.
  • the spray arm assembly 1000 according to the embodiment of the present application will be described in detail below with reference to FIGS. 8 to 18.
  • the spray arm threads are spray arm internal threads 121
  • the carrier base 3100 includes: an outer sleeve 310, an inner sleeve 320, and an outer sleeve 310 sleeved on the inner sleeve.
  • the ball thread is a ball external thread 340 that cooperates with the spray arm internal thread 121, and the ball external thread 340 is disposed on the outer sleeve 310 or the inner sleeve 320. As shown in FIG.
  • a ball external thread 340 is provided on the outer peripheral surface of the outer sleeve 310, the outer sleeve 310 is fixedly connected to the spray arm 100, and the ball 330 is in rolling contact with the outer surface of the spray arm base 200; as shown in FIG. 17, Ball external threads 340 are provided on the outer peripheral surface of the inner sleeve 320, the inner sleeve 320 is fixedly connected to the spray arm 100, the ball 330 is in rolling contact with the inner surface of the spray arm base 200, the spray arm 100, the spray arm base 200, and the ball assembly
  • the connection structure of the three 300 is simple and stable.
  • the spray arm base 200 is provided to provide a connection interface for the spray arm 100.
  • the spray arm base 200 also serves as the water inlet pipe of the spray arm 100.
  • the spray arm 100 and the spray arm base 200 are connected through a ball assembly 300 to enable the spray arm
  • the rolling contact between 100 and the spray arm base 200 can reduce the friction between the spray arm 100 and the spray arm base 200, which is conducive to reducing the hydrodynamic loss, improving the utilization rate of the hydrodynamic force, and ensuring the water from The pressure when the spray hole of the spray arm 100 sprays out is large, which is beneficial to improving the washing effect of the dishwasher.
  • the spray arm 100 and the spray arm base 200 are connected by a ball assembly 300, which can also reduce the height dimension of the spray arm assembly 1000, thereby saving the internal space of the dishwasher and leaving more space for the tableware. Space, increasing the dishwasher capacity.
  • the inner sleeve 320 is provided with a plurality of ball holes 350.
  • the ball 330 is rotatably installed in the ball holes 350.
  • the ball holes 350 provide support for the fixing of the ball 330 and ensure multiple balls.
  • the relative position of 330 is unchanged, preventing collisions and squeezing between the multiple balls 330, thereby improving the working stability of the ball assembly 300, and further improving the smoothness when the spray arm 100 rotates.
  • the number of the ball holes 350 is the same as the number of the balls 330.
  • the ball 330 protrudes from the inner peripheral surface and the outer peripheral surface of the inner sleeve 320 in the radial direction of the inner sleeve 320. That is, the diameter of the ball 330 is larger than the wall thickness of the inner sleeve 320.
  • the outer side of the ball 330 protrudes outward from the outer peripheral surface of the inner sleeve 320, and the inner side of the ball 330 protrudes from the inner peripheral surface of the inner sleeve 320 inward. In this way, the outer side of the ball 330 can communicate with the outer sleeve.
  • the inner surface of 310 is in rolling contact.
  • the inner side of the ball 330 can be in rolling contact with the outer surface of the spray arm base 200.
  • the ball 330 is in rolling contact with the outer sleeve 310 and the spray arm base 200.
  • the ball 330 is the spray arm 100 and spray
  • the connection of the arm mount 200 provides support.
  • the ball external thread 340 is provided on the outer peripheral surface of the outer sleeve 310.
  • the ball external thread 340 is screwed with the spray arm internal thread 121 to thereby fix the outer sleeve 310 and the spray arm 100, and the spray arm 100 and the outer sleeve 310. They are connected by thread, which is convenient for assembly and disassembly and reliable connection.
  • the form of friction between the spray arm 100 and the spray arm base 200 is equivalent to rolling friction, which can reduce the loss of hydrodynamic force and allow more water energy to be sprayed from the spray holes and drive holes on the spray arm 100 , To ensure that the water pressure is greater after spraying from the water spray holes, which is conducive to washing dishes, thereby improving the washing performance of the dishwasher.
  • the plurality of ball holes 350 can be evenly distributed along the circumferential direction of the inner sleeve 320, so that the relative rotation of the spray arm 100 and the spray arm base 200 can be made more stable.
  • the number of the balls 330 is an even number, so that the force of the ball assembly 300 can be balanced and the stress concentration phenomenon can be alleviated.
  • the diameter of the balls 330 is 3mm-8mm, and the number of the balls 330 is 4-12.
  • the spray arm base 200 may include a spray arm base body 210 and a spray arm base flange 220.
  • the spray arm base flange 220 is disposed below the spray arm base body 210 and sprays.
  • the arm base flange 220 extends outward in the radial direction of the spray arm base body 210.
  • the outer diameter of the spray arm base flange 220 is larger than the outer diameter of the spray arm base body 210.
  • the spray arm base flange 220 is suitable for interfacing with the dishwasher. Other parts are connected, the outer diameter of the spray arm base flange 220 is larger, so that the fixing between the spray arm base 200 and other parts can be more stable and reliable.
  • a spray arm base ball groove 270 is provided on the outer peripheral surface of the spray arm base body 210 and is adapted to cooperate with the ball 330.
  • an outer sleeve ball groove 313 suitable for cooperating with the ball 330 is provided on the inner peripheral surface of the outer sleeve 310.
  • the outer sleeve ball groove 313 and the spray arm seat ball groove 270 are circumferential annular grooves. It can ensure the smoothness of the entire rotation of the spray arm 100.
  • the ball 330 is in rolling contact with the outer sleeve ball groove 313 and the spray arm seat ball groove 270, and the friction force is small.
  • the diameter of the outer sleeve ball groove 313 and the spray arm seat ball groove 270 may be equal to the diameter of the ball 330, or may be slightly larger than the diameter of the ball 330, thereby ensuring that the ball 330 and the outer sleeve ball
  • the groove 313 and the ball groove 270 of the spray arm seat are well matched.
  • the positions of the spray arm seat ball groove 270, the outer sleeve ball groove 313, and the ball hole 350 correspond to each other.
  • 330 is partially provided in the ball hole 350, the outer side of the ball 330 is in contact with the outer sleeve ball groove 313, and the inner side of the ball 330 is in contact with the spray arm seat ball groove 270, thereby completing the connection between the spray arm seat 200 and the outer sleeve 310.
  • the outer sleeve 310 is fixedly connected to the spray arm 100, thereby completing the indirect connection of the spray arm 100 and the spray arm base 200.
  • the positions of the spray arm seat ball groove 270, the outer sleeve ball groove 313, and the ball hole 350 correspond to each other, which can prevent the track of the ball 330 from sliding when the spray arm 100 rotates, and the boom seat ball groove 270 and the outer sleeve ball groove 313 The trajectories are different, thereby being squeezed, which makes the spray arm 100 unable to rotate.
  • the outer sleeve 310 may include: an outer sleeve peripheral wall 311 and an outer sleeve bottom wall 312.
  • the outer sleeve bottom wall 312 is disposed on the outer sleeve peripheral wall 311 away from the spray arm 100. At one end, as shown in FIG.
  • the outer sleeve bottom wall 312 is disposed at the lower end of the outer sleeve peripheral wall 311, and the outer sleeve bottom wall 312 extends inward along the radial direction of the outer sleeve peripheral wall 311, and the outer sleeve ball groove 313 is provided At the boundary between the outer sleeve bottom wall 312 and the outer sleeve peripheral wall 311, in this way, the ball 330 is disposed above the outer sleeve bottom wall 312, so that the outer sleeve bottom wall 312 can protect the ball 330 to prevent The exposure of the ball 330 to the outside affects the service life of the ball 330.
  • a ball external thread 340 is provided on the outer peripheral surface of the outer sleeve peripheral wall 311, an outer sleeve ball groove 313 is provided on the inner peripheral surface of the outer sleeve peripheral wall 311, and the outer sleeve ball groove 313 is provided below the ball external thread 340 Therefore, the fixed position of the outer sleeve 310 and the spray arm 100 is located above, and the fitting position of the outer sleeve 310 and the spray arm base 200 is located below, thereby fully utilizing the height space to prevent the spray arm 100 and the spray arm base 200.
  • the axial dimension of the connection fit is too large.
  • a plurality of rib plates 230 are provided between the outer peripheral surface of the spray arm base body 210 and the spray arm base flange 220, and the bottom wall 312 of the outer sleeve is disposed on the rib plate 230.
  • the structural strength and rigidity of the spray arm base body 210 and the spray arm base flange 220 are increased, and the spray arm base 200 is effectively prevented from being broken and damaged when the spray arm 100 rotates at a high speed, thereby facilitating the extension of the spray arm assembly. 1000 life.
  • the plurality of rib plates 230 are uniformly distributed along the circumferential direction of the spray arm base body 210, thereby facilitating the performance of the spray arm base 200.
  • the number of the rib plates 230 is four, and two adjacent rib plates 230 are spaced apart. 90 °.
  • the ball hole 350 is disposed at the bottom of the inner sleeve 320. As shown in FIG. 13, the ball hole 350 is a superior arc hole, and a ball access opening 351 is formed at a bottom gap of the ball hole 350. The ball 330 enters or exits from the ball hole 350 through the ball access port 351, thereby facilitating the installation and removal of the ball 330 in the ball hole 350.
  • a weakening groove 360 is provided between two adjacent ball holes 350, and a weakening groove pillar 361 is provided in the weakening groove 360.
  • the central axis of the weakening groove pillar 361 and the central axis of the inner sleeve 320 Parallel, thereby facilitating the manufacturing process of the inner sleeve 320.
  • the weakening groove column 361 a certain strengthening effect can be played, thereby preventing the weakening groove 360 from excessively weakening the rigidity of the inner sleeve 320, which is beneficial to improving the working reliability of the ball assembly 300.
  • the outer sleeve 310 is provided with a plurality of ball holes 350.
  • the ball 330 is rotatably installed in the ball hole 350.
  • the ball hole 350 provides support for the fixing of the ball 330 and ensures multiple balls.
  • the relative position of 330 is unchanged, preventing collisions and squeezing between the multiple balls 330, thereby improving the working stability of the ball assembly 300, and further improving the smoothness when the spray arm 100 rotates.
  • the number of the ball holes 350 is the same as the number of the balls 330.
  • the outer sleeve 310 mentioned in this application means that the sleeve is located outside the entire ball assembly 300, and the "outer" of the outer sleeve 310 is relative to the "inner” of the inner sleeve 320 That is, the outer sleeve 310 is located at the periphery of the inner sleeve 320, and the inner sleeve 320 is enclosed in the hollow inner cavity of the outer sleeve 310, which does not mean that the outer sleeve 310 must be exposed to the outside of the entire spray arm 1000.
  • the ball 330 protrudes from the inner peripheral surface and the outer peripheral surface of the outer sleeve 310 in the radial direction of the outer sleeve 310. That is, the diameter of the ball 330 is larger than the wall thickness of the outer sleeve 310, and only the middle part of the ball 330 is installed outside.
  • the outer side of the ball 330 protrudes outward from the outer peripheral surface of the outer sleeve 310, and the inner side of the ball 330 protrudes inward from the inner peripheral surface of the outer sleeve 310. In this way, the outer side of the ball 330 can communicate with the The inner surface is in rolling contact.
  • the inner side of the ball 330 can be in rolling contact with the outer surface of the inner sleeve 320.
  • the ball 330 is in rolling contact with the inner sleeve 320 and the spray arm base 200.
  • the ball 330 is the spray arm 100 and the spray arm base.
  • the 200 connection provides support.
  • the ball external thread 340 is provided on the outer peripheral surface of the inner sleeve 320.
  • the ball external thread 340 and the spray arm internal thread 121 are screwed together to thereby fix the inner sleeve 320 and the spray arm 100, and the spray arm 100 and the inner sleeve 320 are connected by a thread, which is convenient for assembly and disassembly and reliable connection.
  • the form of friction between the spray arm 100 and the spray arm base 200 is equivalent to rolling friction, which can reduce the loss of hydrodynamic force and allow more water energy to be sprayed from the spray holes and drive holes on the spray arm 100 , To ensure that the water pressure is greater after spraying from the water spray holes, which is conducive to washing dishes, thereby improving the washing performance of the dishwasher.
  • the plurality of ball holes 350 may be evenly distributed along the circumferential direction of the outer sleeve 310, so that the relative rotation of the spray arm 100 and the spray arm base 200 may be more stable.
  • the number of the balls 330 is an even number, so that the force of the ball assembly 300 can be balanced and the stress concentration phenomenon can be alleviated.
  • the ball hole 350 is located at the middle and lower part of the outer sleeve 310.
  • the diameter of the balls 330 is 3mm-8mm, and the number of the balls 330 is 4-12.
  • the spray arm base 200 may include a spray arm base water inlet shaft 240, a spray arm base ring wall 260, and a spray arm base peripheral wall 250.
  • the spray arm base ring wall 260 is disposed on the spray arm base water inlet shaft 240 and the spray arm base.
  • the spray arm seat peripheral wall 250 is disposed above the spray arm seat ring wall 260, the spray arm seat peripheral wall 250 is vertically connected to the spray arm seat ring wall 260, and the connection position is located at the lower end of the spray arm seat peripheral wall 250 and the spray
  • the diameter of the spray arm seat peripheral wall 250 is larger than the diameter of the spray arm seat inlet shaft 240 at the uppermost part of the arm seat water intake shaft 240 and the innermost end of the spray arm seat ring wall 260.
  • the spray arm base peripheral wall 250 is parallel to the spray arm base water inlet shaft 240.
  • the inner diameter of the spray arm base water inlet shaft 240 is equal to the inner diameter of the inner sleeve 320, so that the spray arm base water inlet shaft 240 and the inner sleeve 320 can be guaranteed.
  • the speed of the water flow is equal to prevent sudden changes in the water speed at the connection between the spray arm base 200 and the ball assembly 300 and affect the stability of the spray arm base 200 and the spray arm 100 when they are relatively rotated.
  • the space surrounded by the spray arm seat peripheral wall 250 forms a receiving space suitable for receiving the ball assembly 300, and the receiving space is located above the spray arm seat ring wall 260.
  • a spray arm seat ball groove 270 is provided on the inner peripheral surface of the spray arm seat peripheral wall 250 and is adapted to cooperate with the ball 330.
  • the outer sleeve surface of the inner sleeve 320 is provided with an inner sleeve ball groove 321 suitable for cooperating with the ball 330, the inner sleeve ball groove 321 and the spray arm seat ball groove 270 are both circumferential annular grooves, so that it can be The smooth rotation of the entire rotation of the spray arm 100 is guaranteed.
  • the ball 330 is in rolling contact with the inner sleeve ball groove 321 and the spray arm seat ball groove 270, and the friction force is small.
  • the diameter of the inner sleeve ball groove 321 and the spray arm seat ball groove 270 may be equal to the diameter of the ball 330, or may be slightly larger than the diameter of the ball 330, thereby ensuring that the ball 330 and the inner sleeve ball
  • the groove 321 and the ball groove 270 of the spray arm seat are well matched.
  • the positions of the spray arm seat ball groove 270, the inner sleeve ball groove 321, and the ball hole 350 correspond, and the ball 330 is partially provided on the ball In the hole 350, the outside of the ball 330 is in contact with the spray arm seat ball groove 270, and the inside of the ball 330 is in contact with the inner sleeve ball groove 321, thereby completing the connection between the spray arm seat 200 and the inner sleeve 320, and the inner sleeve 320 is in turn It is fixedly connected to the spray arm 100, thereby completing the indirect connection of the spray arm 100 and the spray arm base 200.
  • the positions of the spray arm seat ball groove 270, the inner sleeve ball groove 321, and the ball hole 350 correspond to the positions of the spray arm 100 ball 270 and the inner sleeve ball groove 321 when the spray arm 100 rotates.
  • the trajectories are different, thereby being squeezed, which makes the spray arm 100 unable to rotate.
  • both the ball external thread 340 and the inner sleeve ball groove 321 are provided on the outer peripheral surface of the inner sleeve 320, and the inner sleeve ball groove 321 is provided below the ball external thread 340.
  • the inner sleeve 320 and the spray The fixed position of the arm 100 is located above, and the fitting position of the inner sleeve 320 and the spray arm base 200 is located below, thereby making full use of the height space to prevent the axial dimension of the connection and cooperation of the spray arm 100 and the spray arm base 200 from being too large.
  • the inner sleeve 320 and the outer sleeve 310 are disposed above the spray arm seat ring wall 260, so that the spray arm seat ring wall 260 can protect the ball assembly 300 to prevent the ball assembly 300 from being exposed to the outside. This affects the service life of the ball assembly 300.
  • the gap between the lower surface of the inner sleeve 320 and the upper surface of the spray arm seat ring wall 260 is L1, and L1 satisfies the relationship: 0mm ⁇ L1 ⁇ 0.5mm. Therefore, the spray arm 100 and the spray arm seat 200 face each other.
  • the spray arm 100 is stuck, and when the spray arm 100 is tilted, the inner sleeve 320 can quickly contact the spray arm base 200, thereby preventing the spray arm 100 from further tilting, and also preventing excessive water from entering the inner sleeve 320 and the spray arm. Hydrodynamic loss is caused between the seat ring walls 260.
  • a rib (not shown) is provided between the outer peripheral surface of the spray arm seat water inlet shaft 240 and the spray arm seat ring wall 260 to increase the structural strength and rigidity of the spray arm seat 200, thereby effectively preventing the spray arm 100
  • the spray arm base 200 is broken and damaged, which is beneficial to extending the service life of the spray arm assembly 1000.
  • the spray arm 100 may include: a spray arm body 110 and a spray arm connection sleeve 120.
  • the spray arm connection sleeve 120 is disposed on the lower side of the spray arm body 110, and by setting a spray
  • the arm connection sleeve 120 facilitates the connection between the spray arm 100 and the spray arm base 200, and ensures that the spray arm 100 and the spray arm base 200 can be reliably connected as a whole.
  • the spray arm connecting sleeve 120 and the spray arm body 110 have a spray arm chamber 130 in communication, and the spray arm seat 200 has a spray arm chamber 280 in communication with the spray arm chamber 130, thereby ensuring the water supply of the dishwasher.
  • the water can smoothly enter the spray arm chamber 130 through the spray arm seat chamber 280, and then the water is sprayed onto the surface of the tableware through the spray holes on the spray arm 100, thereby completing the operation of cleaning the tableware.
  • the water pressure in the spray arm chamber 130 becomes higher and higher.
  • the reaction force generated by the water column sprayed from the driving hole of the spray arm 100 is also greater, and the spray arm 100
  • the faster the rotation speed the greater the force of the sprayed water on the tableware, which is conducive to cleaning the stains on the tableware. Therefore, by setting the spray arm chamber 130, the washing effect of the dishwasher can be better.
  • the direction and position of the water column sprayed by the spray arm 100 on the tableware are multi-directional, which reduces the dead angle and is easier to clean. Due to the large coverage of the water flow, the cleaning time will be correspondingly reduced, which is beneficial to shorten the cleaning time.
  • the spray arm internal thread 121 is disposed on the inner peripheral surface of the spray arm connection sleeve 120. As shown in FIG. 11, the outer sleeve 310 is fixed to the spray arm internal thread 121 by screwing; as shown in FIG. 17, the inner sleeve 320 and the spray arm The internal thread 121 is screwed and fixed.
  • the height dimension of the spray arm connection sleeve 120 can be reduced, thereby reducing the overall height dimension of the spray arm assembly 1000, leaving room for tableware More space.
  • the ball 330 may be a plastic ball or a stainless steel ball, because the working environment of the spray arm assembly 1000 is filled with water, and the spray arm assembly 1000 has been in a hot and humid environment for a long time, which may cause the ball 330 to rust and jam, and the plastic ball or stainless steel The ball has a strong anti-corrosion ability, which can effectively slow down or even prevent the ball 330 from rusting.
  • the ball 330 may be disposed between the outer sleeve 310 and the inner sleeve 320, that is, the outer sleeve 310 and the inner sleeve 320 are not provided with ball holes 350, and the outer sleeve
  • An outer sleeve ball groove 313 is provided on the inner peripheral surface of 310
  • an inner sleeve ball groove 321 is provided on the outer peripheral surface of the inner sleeve 320.
  • the outer side of the ball 330 is in rolling contact with the outer sleeve ball groove 313, and the inner side of the ball 330 Rolling contact with the inner sleeve ball groove 321 can also realize the rolling connection of the spray arm 100 and the spray arm base 200.
  • the rolling friction between the spray arm 100 and the spray arm base 200 is beneficial to reduce the hydrodynamic consumption and thus improve the spray Washing ability of the arm assembly 1000.
  • a washing appliance includes the spray arm assembly 1000 of the above embodiment.
  • the washing appliance can be a dishwasher, or a washing appliance with a washing function, such as a fruit and vegetable washing machine, a medical washing machine, etc.
  • the effect is similar to that of the spray arm assembly 1000 installed in the dishwasher, which is not repeated here. .

Landscapes

  • Washing And Drying Of Tableware (AREA)

Abstract

一种喷臂组件(1000)及具有其的洗涤电器。该喷臂组件(1000)包括：喷臂(100)，该喷臂(100)具有喷臂螺纹(121)；喷臂座(200)，喷臂(100)与喷臂座(200)相连，且该喷臂(100)相对于该喷臂座(200)可转动；滚珠组件(300)，该滚珠组件(300)设置在该喷臂(100)与该喷臂座(200)的连接配合处，且该滚珠组件(300)包括：承载基体(3100)和滚珠(330)，该滚珠(330)可转动地设置在该承载基体(3100)上，该承载基体(3100)上设置有与该喷臂螺纹(121)配合的滚珠螺纹。通过滚珠组件(300)使得喷臂(100)与喷臂座(200)间的摩擦形式为滚动摩擦，减少了现有技术中使用滑动摩擦形式的连接方式造成的水动力损失，并且可以提高喷臂(100)转动时的平顺性、降低噪声。

Description

喷臂组件及具有其的洗涤电器
相关申请的交叉引用
本申请要求申请日为2018年8月28日，申请号为201810991115.X、201821410963.9、201810990361.3、201821401305.3，专利申请名称为“喷臂组件及具有其的洗涤电器”的优先权。
技术领域
本申请涉及家用电器技术领域，具体而言，涉及一种喷臂组件及具有其的洗涤电器。
背景技术
对于现有喷臂组件来讲，喷臂与喷臂座连接的主要方式是通过卡接凸缘与卡扣配合连接，但是这种连接方式会导致喷臂与喷臂座之间的间隙较大，当喷臂工作时，喷臂中的水容易通过该缝隙泄露，影响清洗效果。此外，当喷臂与喷臂座产生相对运动时，二者之间的摩擦方式是滑动摩擦，因此损失的水动力比较大。另一方面，卡扣连接方式直接导致喷臂座和喷臂的上下高度尺寸较大，这样浪费了洗涤电器的内胆空间，减少了洗涤电器内部待清洗件的摆放空间。
发明内容
本申请旨在至少在一定程度上解决现有技术中的上述技术问题之一。为此，本申请提出一种喷臂组件，可以减小喷臂与喷臂座之间的摩擦力。
本申请还提出了一种具有上述喷臂组件的洗涤电器。
根据本申请实施例的喷臂组件包括：喷臂，所述喷臂具有喷臂螺纹；喷臂座，喷臂与喷臂座相连，且所述喷臂相对于所述喷臂座可转动；滚珠组件，所述滚珠组件设置在所述喷臂与所述喷臂座的连接配合处，且所述滚珠组件包括：承载基体和滚珠，所述滚珠可转动地设置在所述承载基体上，所述承载基体上设置有与所述喷臂螺纹配合的滚珠螺纹。
根据本申请实施例的喷臂组件，喷臂与喷臂座之间通过滚珠组件相连，由此可以减小喷臂与喷臂座之间的摩擦力，从而有利于减小水动力损失，此外，还可以减小喷臂组件的高度尺寸，从而为待清洗件的摆放留出了更多的空间，提升了洗涤电器的容量。
根据本申请的一些实施例，所述喷臂螺纹为喷臂外螺纹，所述滚珠螺纹为与所述喷臂内螺纹配合的滚珠内螺纹。
根据本申请的一些实施例，所述喷臂包括：喷臂本体和喷臂连接套，所述喷臂连接套 设置在所述喷臂本体的下侧，所述喷臂连接套与所述喷臂本体内具有连通的喷臂腔室，所述喷臂座内具有与所述喷臂腔室连通的喷臂座腔室，所述喷臂外螺纹设置在所述喷臂连接套的外周面。
进一步地，所述承载基体包括：外套筒，所述外套筒套设在所述喷臂连接套的外部，所述滚珠内螺纹设置在所述外套筒的内周面上。
进一步地，所述承载基体还包括：中间套筒，所述中间套筒设置在所述外套筒与所述内套筒之间，所述中间套筒上设置有多个滚珠孔，所述滚珠安装在所述滚珠孔里。
所述承载基体还包括：内套筒，所述内套筒适于与所述喷臂座连接，且所述喷臂座与所述内套筒之间为可拆卸连接。
进一步地，所述外套筒的内周面上设置有适于与所述滚珠配合的外套筒滚珠槽，所述内套筒的外周面上设置有适于与所述滚珠配合的内套筒滚珠槽。
根据本申请的一些实施例，所述内套筒的外周面上设置有内套筒外螺纹，所述喷臂座的内周面上设置有适于与所述内套筒外螺纹配合的喷臂座内螺纹，所述内套筒外螺纹设置在所述内套筒滚珠槽的下方。
根据本申请的一些实施例，所述喷臂座至少部分地位于所述内套筒内侧，且所述喷臂座的顶部具有喷臂座卡扣，所述喷臂座卡扣适于卡在所述内套筒的上表面。
具体地，所述喷臂座的顶端具有多个凹槽，所述凹槽的开口方向与所述喷臂座的轴线方向平行，所述喷臂座卡扣从所述凹槽的底壁向上延伸，且所述喷臂座卡扣的两侧与所述凹槽的两个侧壁分离开，所述喷臂座卡扣的顶端设置有朝向所述内套筒的卡勾。
具体地，所述滚珠孔设置在所述中间套筒的底部，所述滚珠孔为优弧孔且底部缺口处形成滚珠取放口。
进一步地，相邻的两个所述滚珠孔之间设置有弱化槽，且所述弱化槽内设置有弱化槽立柱。
具体地，所述外套筒包括：外套筒周壁和外套筒底壁，所述外套筒底壁设置在所述外套筒周壁的远离所述喷臂的一端，且所述外套筒底壁沿所述外套筒周壁的径向向内延伸，所述滚珠设置在所述外套筒底壁的上方。
具体地，所述喷臂连接套包括：连接套周壁和沿所述连接套周壁的径向向内延伸的连接套底壁，所述连接套底壁设置在所述连接套周壁的远离所述喷臂本体的一端，所述内套筒和所述中间套筒设置在所述连接套底壁的下方。
进一步地，所述连接套底壁的内径与所述内套筒的内径相等。
可选地，所述喷臂座具有喷臂座进水孔，所述喷臂座进水孔的内径与所述内套筒的内径相等。
可选地，所述内套筒的上表面与所述连接套底壁的下表面之间的间隙为L1，L1满足关系式：0mm＜L1≤0.5mm。
根据本申请的一些实施例，所述喷臂螺纹为喷臂内螺纹，所述承载基体包括：外套筒、内套筒，所述外套筒套设在所述内套筒的外部，所述滚珠螺纹为与所述喷臂内螺纹配合的滚珠外螺纹，所述滚珠外螺纹设置在所述外套筒或所述内套筒上。
根据本申请的一些实施例，所述内套筒上设置有多个滚珠孔，所述滚珠安装在所述滚珠孔里，所述滚珠外螺纹设置在所述外套筒的外周面上。
进一步地，所述喷臂座包括：喷臂座本体，所述喷臂座本体的外周面上设置有适于与所述滚珠配合的喷臂座滚珠槽。
进一步地，所述外套筒的内周面上设置有适于与所述滚珠配合的外套筒滚珠槽，所述外套筒滚珠槽、所述喷臂座滚珠槽均为周向环形槽。
具体地，所述外套筒包括：外套筒周壁和外套筒底壁，所述外套筒底壁设置在所述外套筒周壁的远离所述喷臂的一端，且所述外套筒底壁沿所述外套筒周壁的径向向内延伸，所述滚珠设置在所述外套筒底壁的上方。
可选地，所述喷臂座还包括：沿所述喷臂座本体的径向向外延伸的喷臂座凸缘，所述喷臂座凸缘设置在所述喷臂座本体的下方，所述喷臂座本体的外周面与所述喷臂座凸缘之间设置有多个肋板，所述外套筒底壁设置在所述肋板的上方。
根据本申请的一些实施例，所述滚珠孔设置在所述内套筒的底部，所述滚珠孔为优弧孔且底部缺口处形成滚珠取放口。
进一步地，相邻的两个所述滚珠孔之间设置有弱化槽，且所述弱化槽内设置有弱化槽立柱。
根据本申请的一些实施例，所述外套筒上设置有多个滚珠孔，所述滚珠安装在所述滚珠孔里，所述滚珠外螺纹设置在所述内套筒的外周面上。
具体地，所述喷臂座包括：喷臂座进水轴、喷臂座周壁以及设置在所述喷臂座进水轴、所述喷臂座周壁之间的喷臂座环壁，所述喷臂座周壁设置在所述喷臂座环壁的上方，所述喷臂座进水轴设置在所述喷臂座环壁的下方，所述喷臂座周壁所围空间形成适于容纳所述滚珠组件的容纳空间，且所述容纳空间位于所述喷臂座环壁的上方。
所述喷臂座进水轴的内径与所述内套筒的内径相等。
进一步地，所述内套筒的外周面上设置有适于与所述滚珠配合的内套筒滚珠槽，所述喷臂座周壁的内周面上设置有适于与所述滚珠配合的喷臂座滚珠槽，所述内套筒滚珠槽和所述喷臂座滚珠槽均为周向环形槽。
进一步地，所述内套筒和所述外套筒设置在所述喷臂座环壁的上方，且所述内套筒的下表面与所述喷臂座环壁的上表面之间的间隙为L1，L1满足关系式：0mm＜L1≤0.5mm。
可选地，所述喷臂座进水轴的外周面与所述喷臂座环壁之间设置有肋板。
根据本申请的一些实施例，所述喷臂包括：喷臂本体和喷臂连接套，所述喷臂连接套设置在所述喷臂本体的下侧，所述喷臂连接套与所述喷臂本体内具有连通的喷臂腔室，所述喷臂座内具有与所述喷臂腔室连通的喷臂座腔室，所述喷臂内螺纹设置在所述喷臂连接套的内周面。
根据本申请另一方面实施例的洗涤电器，包括上述的喷臂组件。
附图说明
图1是喷臂组件的第三实施例示意图；
图2是喷臂组件的第三实施例半剖示意图；
图3是图3中P处局部放大图；
图4是喷臂组件的第三实施例分解示意图；
图5是滚珠组件的第三实施例半剖示意图；
图6是图4中Q处滚珠组件的分解半剖示意图；
图7是中间套筒的半剖示意图。
图8是喷臂组件的第一实施例立体示意图；
图9是喷臂组件的第一实施例立体半剖示意图；
图10是喷臂组件的第一实施例半剖示意图；
图11是图10中的A处局部放大图；
图12是滚珠组件和喷臂座的装配示意图；
图13是滚珠组件和喷臂座的分解示意图；
图14是滚珠组件和喷臂座的立体半剖示意图；
图15是滚珠组件和喷臂座的半剖示意图；
图16是喷臂组件的第二实施例半剖示意图；
图17是图16中的B处局部放大图；
图18是喷臂组件的第一实施例分解示意图。
附图标记：
喷臂组件1000、喷臂100、喷臂腔室130、喷臂本体110、喷臂连接套120、喷臂外螺纹121、连接套周壁122、连接套底壁123、喷臂座200、喷臂座腔室280、喷臂座凸缘220、喷臂座内螺纹2200、滚珠组件300、承载基体3100、外套筒310、滚珠内螺纹3111、外套 筒滚珠槽313、外套筒周壁311、外套筒底壁312、内套筒320、内套筒滚珠槽321、内套筒外螺纹3122、中间套筒370、滚珠孔350、弱化槽360、弱化槽立柱361、滚珠330、喷臂内螺纹121、喷臂座本体210、肋板230、喷臂座进水轴240、喷臂座周壁250、喷臂座环壁260、喷臂座滚珠槽270、滚珠外螺纹340。
具体实施方式
下面详细描述本申请的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，旨在用于解释本申请，而不能理解为对本申请的限制。
在本申请的描述中，需要理解的是，术语“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“顶”、“底”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请的限制。
在本申请中，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”、“固定”等术语应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本申请中的具体含义。
下面结合图1-图18详细描述根据本申请实施例的喷臂组件1000。喷臂组件1000可用于洗涤电器中，下面以将喷臂组件1000应用于洗碗机为例来说明喷臂组件1000的结构。
参照图1、图8所示，根据本申请实施例的喷臂组件1000可以包括：喷臂100、喷臂座200和滚珠组件300。
喷臂100具有喷臂螺纹，为喷臂100与其他部件的连接提供了可能，喷臂100与喷臂座200相连，且喷臂100相对于喷臂座200可转动，喷臂座200位于喷臂100的下方，通过设置喷臂座200，为喷臂100提供了连接接口，同时，喷臂100与喷臂座200连接为一体后，喷臂座200还可以充当喷臂100的进水管路。在一些实施例中，喷臂100上设置有喷水孔和驱动孔，当喷臂100内的水压达到一定值后，喷臂100开始通过喷水孔和驱动孔(图中未示出)喷出水柱，喷臂100受到水柱喷出时的反作用力而转动，随着水柱不断地从喷水孔和驱动孔中喷出，喷臂100可持续地转动，从喷水孔和驱动孔喷出的水柱随着喷臂100的转动会洒向餐具表面或洗碗机内壁，进而将餐具或洗碗机内壁的污渍洗净，从而完成洗碗机对餐具的清洗工作。喷臂100喷射到餐具上的水柱方向和位置是多向的，减少 了死角更容易洗净，由于水流的覆盖率较大，清洗时间也会相应减少，即有利于缩短清洗时间。
滚珠组件300设置在喷臂100与喷臂座200的连接配合处，且滚珠组件300可以包括：承载基体3100和滚珠320，滚珠320可转动地设置在承载基体3100上，承载基体3100上设置有与喷臂螺纹配合的滚珠螺纹。具体而言，承载基体3100可以是一个零件，也可以是包含多个零件的组件。在本申请的实施例中，承载基体3100由不止一个部件组成，且承载基体3100的一部分与喷臂100固定连接，承载基体3100的另一部分又与喷臂座200固定连接，由此可以实现喷臂100与喷臂座200的间接连接。滚珠320设置在承载基体3100的中间，且滚珠320可在承载基体3100中转动，可使喷臂100与喷臂座200之间通过滚珠320实现相对转动，从而可以改变喷臂100与喷臂座200之间的摩擦形式，由之前的滑动摩擦变为滚动摩擦，进而有利于减小喷臂100与喷臂座200之间的摩擦力。
通过设置滚珠组件300，当喷臂100与喷臂座200发生相对转动时，喷臂100与喷臂座200之间的摩擦形式为滚动摩擦，不再是之前的滑动摩擦，这样，滚动摩擦力对喷臂100转动时的阻力很小，因此可以减少由于摩擦造成的水动力损失，提高水动力的利用率。同时，喷臂100相对于喷臂座200转动时的速度较快，所以通过设置滚珠组件300，有利于提高喷臂100转动时的平顺性，从而有利于降低洗碗机的噪声。
此外，相比于原来喷臂100与喷臂座200单独通过卡扣连接的形式，喷臂100与喷臂座200之间采用滚珠组件300连接之后，可以减小喷臂100与喷臂座200之间的距离，从而减小了喷臂组件1000的高度尺寸，节省了洗碗机内部空间，为餐具的摆放留出了更多的空间，进而提升了洗碗机的餐具容量，例如可以增加洗碗机内部装载量10mm-40mm。
喷臂100与滚珠组件300之间通过螺纹进行连接，便于拆装且固定可靠。
根据本申请实施例的喷臂组件1000，喷臂螺纹设置在喷臂100上,为喷臂100与滚珠组件300的连接提供了接口，喷臂100与喷臂座200之间通过滚珠组件300相连，由此可以减小喷臂100与喷臂座200之间的摩擦力，从而有利于减小水动力损失，提高水动力的利用率，保证水从喷臂喷水孔喷出时的压力较大，有利于提升洗碗机对餐具的清洗效果。此外，还可以减小喷臂组件1000的高度尺寸，从而节省了洗碗机内部空间，为餐具的摆放留出了更多的空间，提升了洗碗机的餐具容量。
下面结合图1-图7详细描述根据本申请实施例的喷臂组件1000。
参照图4-图6所示，喷臂螺纹为喷臂外螺纹121，滚珠螺纹为与喷臂内螺纹121配合的滚珠内螺纹3111，承载基体3100上设置有与喷臂外螺纹121配合的滚珠内螺纹3111。
也就是说，承载基体3100的外部零件上设置有与喷臂外螺纹121配合的滚珠内螺纹 3111,如图2-图3、图6所示，滚珠内螺纹3111设置在承载基体3100外部零件的内周面上，通过喷臂外螺纹121和滚珠内螺纹3111配合，实现承载基体3100与喷臂100的固定相连，承载基体3100内部零件又与喷臂座200固定连接，其中滚珠330设置在承载基体3100内部零件和外部零件之间，承载基体3100的内部零件和外部零件可以相对转动，由此保证喷臂100、喷臂座200可以相对转动，喷臂100、喷臂座200与滚珠组件300三者连接的结构简单、稳定。
参考图2-图4所示，喷臂100可以包括：喷臂本体110和喷臂连接套120，喷臂连接套120设置在喷臂本体110的下侧，通过设置喷臂连接套120，方便了喷臂100与喷臂座200连接，保证了喷臂100与喷臂座200可以可靠地连接为一体。
喷臂连接套120与喷臂本体110内具有连通的喷臂腔室130，喷臂座200内具有与喷臂腔室130连通的喷臂座腔室280，由此可以保证洗碗机水源的水经喷臂座腔室280可以顺利地进入喷臂腔室130内，进而水经喷臂100上的喷水孔和驱动孔喷射到餐具表面，从而完成清洗餐具的操作。随着水持续地进入到喷臂腔室130，喷臂腔室130内的水压越来越高，此时从喷臂100驱动孔喷出的水柱所产生的反作用力也越大，喷臂100转动的速度也就越快，同时，喷出的水柱拍打在餐具上的力也越大，有利于清洗餐具上的污渍，因此通过设置喷臂腔室130，可以保证洗碗机的洗涤效果较好。
参考图5-图7所示，承载基体3100包括三个零件，分别为：外套筒310(即前面所说的承载基体3100外部零件)、内套筒320(即前面所说的承载基体3100内部零件)以及中间套筒370。
其中，外套筒310套设在喷臂连接套120的外部，滚珠内螺纹3111设置在外套筒310的内周面上，喷臂外螺纹121设置在喷臂连接套120的外周面上，因此，通过滚珠内螺纹3111与喷臂外螺纹121配合连接，可将外套筒310与喷臂连接套120连接为一体，从而保证承载基体3100与喷臂100可靠地连接为一体。
内套筒320设置在外套筒310和中间套筒370的内部，通过内套筒320与喷臂座200固定连接，保证承载基体3100与喷臂座200可靠地连接为一体。
中间套筒370设置在外套筒310与内套筒320之间，中间套筒370上设置有多个滚珠孔350，滚珠330设置滚珠孔350中，且滚珠330可转动地安装在滚珠孔350里，滚珠孔350为滚珠330的固定提供了支撑，保证多个滚珠330的相对位置不变，防止多个滚珠330之间发生碰撞、挤压，由此可以提高滚珠组件300的工作稳定性，从而可以进一步提高喷臂100转动时的平顺性。
可选地，滚珠孔350的数量与滚珠330的数量相同。滚珠330在中间套筒370的径向上突出中间套筒370的内周面和外周面,也就是说，滚珠330的直径大于中间套筒370的壁 厚，滚珠330有且仅有中间部分是安装在中间套筒370内的，滚珠330的外侧向外突出中间套筒370的外周面，滚珠330的内侧向内突出中间套筒370的内周面，这样，滚珠330的外侧可与外套筒310的内表面滚动接触，滚珠330的内侧可与内套筒320的外表面滚动接触，滚珠330与外套筒310、内套筒320之间均为滚动接触，其中，外套筒310与喷臂100固定连接，内套筒320与喷臂座200固定连接，因此，滚珠330间接为喷臂100与喷臂座200的连接提供了支撑，当喷臂100与喷臂座200发生相对转动时，喷臂100与喷臂座200之间间接地通过滚珠330接触，因此喷臂100与喷臂座200之间为滚动摩擦。
可选地，滚珠330的直径为3mm-8mm，滚珠330的数量为4个-12个。
参考图4-图6所示，进一步地，外套筒310的内周面上设置有适于与滚珠330配合的外套筒滚珠槽313，滚珠内螺纹3111设置在外套筒滚珠槽313的上方，为滚珠330可以在外套筒滚珠槽313顺畅地转动提供了空间，内套筒320的外周面上设置有适于与滚珠330配合的内套筒滚珠槽321，外套筒滚珠槽313、内套筒滚珠槽321均为周向环形槽,由此可以保证喷臂100整圈转动的顺畅性。滚珠330与外套筒滚珠槽313、内套筒滚珠槽321之间为滚动接触，摩擦力较小。在具体实施例中，外套筒滚珠槽313、内套筒滚珠槽321的直径可以与滚珠330的直径相等，或者也可以略大于滚珠330的直径，由此可保证滚珠330与外套筒滚珠槽313、内套筒滚珠槽321配合良好。
结合图3-图4所示，在喷臂连接套120的中心轴线方向上，外套筒滚珠槽313、内套筒滚珠槽321、滚珠孔350的位置相对应，滚珠330部分地设置在滚珠孔350中。滚珠330的外侧与外套筒滚珠槽313接触，滚珠330的内侧与内套筒滚珠槽321接触，从而完成外套筒310与内套筒320的连接，而外套筒310又与喷臂100固定连接，内套筒320又与喷臂座200固定连接，进而完成喷臂100与喷臂座200的间接连接。外套筒滚珠槽313、内套筒滚珠槽321、滚珠孔350的位置相对应，可以防止喷臂100转动时，滚珠330所滑动的轨迹与外套筒滚珠槽313以及内套筒滚珠槽321的轨迹不同，从而受到挤压，导致喷臂100无法转动。
在一些实施例中，喷臂座200与内套筒320之间为可拆卸连接。
参考图3-图4所示，内套筒320的外周面上设置有内套筒外螺纹3122，喷臂座200的内周面上设置有适于与内套筒外螺纹3122配合的喷臂座内螺纹2200，通过内套筒外螺纹3122与喷臂座内螺纹2200配合连接，将内套筒320与喷臂座200可靠地连接为一体，喷臂座200与滚珠组件300之间通过螺纹进行连接，便于拆装且固定可靠。内套筒外螺纹3122设置在内套筒滚珠槽321的下方，为滚珠330可以在内套筒滚珠槽321顺畅地转动提供了空间。
参考图4、图6所示，滚珠内螺纹3111设置在外套筒滚珠槽313的上方，内套筒外螺 纹3122设置在内套筒滚珠槽321的下方，因此，外套筒310与喷臂100的固定位置位于上方，内套筒320与喷臂座200的配合位置位于下方，由此充分利用了高度空间，防止喷臂100与喷臂座200连接配合处的轴向尺寸太大。
参考图6-图7所示，具体地，滚珠孔350设置在中间套筒370的底部，滚珠孔350为优弧孔，且滚珠孔350的底部缺口处形成滚珠取放口,滚珠330经滚珠取放口进入滚珠孔350或从滚珠孔350出来，由此方便了滚珠330在滚珠孔350内的安装与拆卸。优弧孔是圆心角大于180°且小于360°的孔，由此可以使每个滚珠330的大部分位于滚珠孔350内，防止安装完成后，滚珠330从滚珠孔350内脱落。在安装滚珠330时，可以借助外力将滚珠取放口撑开，随后将滚珠330经滚珠取放口安装在滚珠孔350内，接着撤去外力，滚珠孔350的弹性变形随之消失，滚珠孔350恢复原状，此时滚珠孔350紧紧包裹滚珠330，使得滚珠330在滚珠孔350内的安装更加牢固、可靠。
在具体实施例中，多个滚珠孔350可沿中间套筒370的周向均匀分布，由此可使喷臂100与喷臂座200的相对转动更加平稳。优选地，滚珠330的数量为偶数，由此可以保证滚珠组件300受力均衡，缓解应力集中现象。
参考图6-图7所示，相邻的两个滚珠孔350之间设置有弱化槽360，通过设置弱化槽360，可使相邻的两个滚珠孔350之间的刚度较小，由此在安装滚珠330时，滚珠孔350容易变形，从而减小了滚珠330的安装或拆卸难度。
弱化槽360内设置有弱化槽立柱361,可选地，弱化槽立柱361的中心轴线与中间套筒370的中心轴线平行，由此有利于简化中间套筒370的加工工艺。通过设置弱化槽立柱361，可以起到一定的强化作用，从而防止弱化槽360过度削弱中间套筒370的刚度，进而有利于提高滚珠组件300的工作可靠性。
中间套筒370的作用主要有三点：(1)通过在中间套筒370上开设滚珠孔350，并将滚珠330安装在滚珠孔350内，可以固定、限位滚珠330的位置，防止滚珠330堆积；(2)起到隔离食物残渣的作用，防止食物小残渣进入滚珠槽，而造成摩擦；(3)起到强化作用，又能隔离喷臂100震动，防止喷臂100晃动严重。
参考图5-图6所示，具体地，外套筒310可以包括：外套筒周壁311和外套筒底壁312，外套筒底壁312设置在外套筒周壁311的远离喷臂100的一端，结合图3所示，外套筒底壁312设置在外套筒周壁311的下端，且外套筒底壁312沿外套筒周壁311的径向向内延伸，外套筒滚珠槽313设置在外套筒底壁312与外套筒周壁311交界处，这样，滚珠330设置在外套筒底壁312的上方，由此，外套筒底壁312可对滚珠330起到一定的保护作用，防止滚珠330暴露在外而影响滚珠330的使用寿命。
参考图2-图4所示，进一步地，喷臂座200的顶部具有喷臂座凸缘220，喷臂座凸缘 220沿喷臂座200的径向向外延伸，喷臂座凸缘220设置在外套筒底壁312的下方，且喷臂座凸缘220的上表面与外套筒底壁312的下表面之间的间隙为L2，L2满足关系式：0mm＜L2≤0.5mm，由此，在喷臂100与喷臂座200发生相对转动时，可以避免外套筒底壁312的下表面与喷臂座凸缘220的上表面之间接触而发生滑动摩擦，也就是说，外套筒310与喷臂座200之间无摩擦。此外，外套筒底壁312的下表面与喷臂座凸缘220的上表面之间的间隙较小，可以防止残羹剩饭或者其他污染物进入间隙中而增加喷臂100与喷臂座200之间的摩擦力甚至卡死喷臂100，并且当喷臂100倾斜时，外套筒310可快速与喷臂座200接触，从而避免喷臂100进一步倾斜。
例如在一些可选的实施例，喷臂座凸缘220的上表面与外套筒底壁312的下表面之间的间隙L2可以是0.1mm，也可以是0.2mm或0.3mm。
参考图3-图5所示，具体地，喷臂连接套120可以包括：连接套周壁122和连接套底壁123，连接套底壁123沿连接套周壁122的径向向内延伸，连接套底壁123设置在连接套周壁122的远离喷臂本体110的一端，如图3所示，连接套底壁123设置在连接套周壁122的下端，内套筒320和中间套筒370设置在连接套底壁123的下方。
参照图3所示，连接套底壁123的内径与内套筒320的内径相等，两者对齐，无突变台阶，可避免水流压力损失。同时，当水从内套筒320进入喷臂连接套120时，可在连接套底壁123处进行缓冲、过渡，可以避免水流流速突变而影响喷臂100的转动平稳性。喷臂座200的底部具有喷臂座内凸缘，喷臂座内凸缘沿喷臂座200的径向向内延伸，内套筒320位于喷臂座内凸缘的上方，喷臂座内凸缘的中心具有喷臂座进水孔，喷臂座进水孔的内径也与内套筒320的内径相等，两者对齐，无突变台阶，可避免水流压力损失。同时，当水从喷臂座200进入内套筒320时，同样可以避免水流流速突变而影响喷臂100的转动平稳性。
也就是说，当洗碗机的水源打开时，水流从喷臂座200进入，然后再流入到喷臂连接套120的喷臂腔室130中，因此，连接套底壁123的内径与内套筒320的内径以及喷臂座进水孔的内径相等，可以保证喷臂座200、内套筒320与连接套底壁123中的水流速度相等，又由于连接套底壁123的内径与连接套周壁122的内径相差不大，因此当水经连接套底壁123进入连接套周壁122内时，水流速度的变化较小，水流进入喷臂腔室130的水流流速稳定，从而避免水流速度剧烈变化导致喷臂100晃动严重，保证喷臂腔室130内的水压稳定上升，防止在喷臂座200与内套筒320的连接处、内套筒320与喷臂连接套120的连接处出现流速突变，保证喷臂100可以稳定地转动，进而保证喷臂组件1000的工作可靠性高。
内套筒320的上表面与连接套底壁123的下表面之间的间隙为L1，L1满足关系式：0mm ＜L1≤0.5mm，由此，在喷臂100与喷臂座200发生相对转动时，可以避免内套筒320的上表面与连接套底壁123的下表面之间接触而发生滑动摩擦，也就是说，内套筒320与喷臂连接套120之间无摩擦，此外，内套筒320的上表面与连接套底壁123的下表面之间的间隙较小，可以防止残羹剩饭或者其他污染物进入间隙中而增加喷臂100与喷臂座200之间的摩擦力甚至卡死喷臂100，也可以避免水过多地进入内套筒320与连接套底壁123之间而导致水动力损失，并且当喷臂100倾斜时，内套筒320可快速与喷臂连接套120接触，从而避免喷臂100进一步倾斜。
例如在一些可选的实施例，内套筒320的上表面与连接套底壁123的下表面之间的间隙L1可以是0.1mm，也可以是0.2mm或0.3mm。
喷臂100与喷臂座200之间采用滚珠组件300连接之后，可以减小喷臂连接套120的高度尺寸，从而减小了喷臂组件1000的整体高度尺寸，为餐具的摆放留出了更多的空间。
在具体实施例中，滚珠330可以是塑料滚珠或不锈钢滚珠，因为喷臂组件1000的工作环境充满了水，喷臂组件1000长期处于湿热环境，易导致滚珠330生锈卡滞，塑料滚珠或不锈钢滚珠的防腐蚀能力较强，可以有效减缓甚至避免滚珠330生锈。
在一些未示出的实施例中，喷臂座200至少部分地位于内套筒320内侧，且喷臂座200的顶部具有喷臂座卡扣，喷臂座卡扣适于卡在内套筒320的上表面。通过在喷臂座200的顶部设置喷臂座卡扣，可以保证喷臂座200与内套筒320可靠地连接为一体，并且方便喷臂座200与滚珠组件300进行连接与脱离，便于喷臂组件1000的安装。
具体地，喷臂座200的顶端具有多个凹槽，凹槽的开口方向与喷臂座200的轴线方向平行，喷臂座卡扣从凹槽的底壁向上延伸，且喷臂座卡扣的两侧与凹槽的两个侧壁分离开，由此保证喷臂座卡扣可以在凹槽内发生弹性变形。喷臂座卡扣的顶端设置有朝向内套筒320的卡勾，卡勾适于勾在内套筒320的顶端，从而限制喷臂座200与内套筒320的相对轴向位置。
在将内套筒320与喷臂座200装配时，内套筒320的内周面挤压喷臂座卡扣的卡勾，使喷臂座卡扣向喷臂座200的内部变形，保证喷臂座卡扣可从内套筒320的底端到达内套筒320的顶端(即从下而上)，当喷臂座卡扣越过内套筒320的顶端时，喷臂座卡扣所受的挤压力消失，在喷臂座卡扣自身弹力的作用下，喷臂座卡扣向内套筒320靠近，使得卡勾勾住内套筒320的顶端。
当需要将内套筒320与喷臂座200分离时，只需用力向上提起喷臂100，内套筒320顶端挤压卡勾，使得卡勾收回在内套筒320内部，继续提起喷臂100，便可将内套筒320与喷臂座200分离。
基于图3的实施例，本申请的承载基体3100可以具有多种变形方式，这些变形方式都 落入本申请的保护范围内。下面结合图3对根据本申请实施例的承载基体3100的多个变型例进行概述。
例如，在其中第一个未示出的实施例中，承载基体3100可以仅包括：外套筒310，即相比上述图3的实施例而言，减少了中间套筒370、内套筒320，利用滚珠330直接与外套筒310和喷臂座200配合，同样可以实现喷臂连接套120和喷臂座200的滚动相连。此时，喷臂座200的外周面上设置有适于与滚珠330配合的喷臂座滚珠槽。
例如，在其中第二个未示出的实施例中，承载基体3100可以仅包括：外套筒310和中间套筒370，即相比上述图3的实施例而言，减少了内套筒320，利用滚珠330直接与外套筒310和喷臂座200配合，同样可以实现喷臂连接套120和喷臂座200的滚动相连。此时，喷臂座200的外周面上设置有适于与滚珠330配合的喷臂座滚珠槽。
例如，在其中第三个未示出的实施例中，承载基体3100可以仅包括：外套筒310和内套筒320，即相比上述图3的实施例而言，减少了中间套筒370，利用滚珠330直接与外套筒310和内套筒320配合，同样可以实现喷臂连接套120和喷臂座200的滚动相连。
下面结合图8-图18详细描述根据本申请实施例的喷臂组件1000。
参照图10-图11、图16-图17所示，喷臂螺纹为喷臂内螺纹121，承载基体3100包括：外套筒310、内套筒320，外套筒310套设在内套筒320的外部，滚珠螺纹为与喷臂内螺纹121配合的滚珠外螺纹340，滚珠外螺纹340设置在外套筒310或内套筒320上。如图11所示，滚珠外螺纹340设置在外套筒310的外周面上，外套筒310与喷臂100固定相连，滚珠330与喷臂座200的外表面滚动接触；如图17所示，滚珠外螺纹340设置在内套筒320的外周面上，内套筒320与喷臂100固定相连，滚珠330与喷臂座200的内表面滚动接触，喷臂100、喷臂座200与滚珠组件300三者连接的结构简单、稳定。
通过设置喷臂座200，为喷臂100提供了连接接口，同时喷臂座200还充当喷臂100的进水管路，喷臂100与喷臂座200之间通过滚珠组件300相连，使喷臂100与喷臂座200之间为滚动接触，由此可以减小喷臂100与喷臂座200之间的摩擦力，从而有利于减小水动力损失，提高水动力的利用率，保证水从喷臂100喷水孔喷出时的压力较大，有利于提升洗碗机对餐具的清洗效果。此外，喷臂100与喷臂座200之间通过滚珠组件300连接，还可以减小喷臂组件1000的高度尺寸，从而节省了洗碗机内部空间，为餐具的摆放留出了更多的空间，提升了洗碗机的餐具容量。
下面参照图8-图15详细说明本申请的第一个实施例。
参照图10-图13所示，内套筒320上设置有多个滚珠孔350，滚珠330可转动地安装在滚珠孔350里，滚珠孔350为滚珠330的固定提供了支撑，保证多个滚珠330的相对位 置不变，防止多个滚珠330之间发生碰撞、挤压，由此可以提高滚珠组件300的工作稳定性，从而可以进一步提高喷臂100转动时的平顺性。可选地，滚珠孔350的数量与滚珠330的数量相同。
滚珠330在内套筒320的径向上突出内套筒320的内周面和外周面，也就是说，滚珠330的直径大于内套筒320的壁厚，滚珠330有且仅有中间部分是安装在内套筒320内的，滚珠330的外侧向外突出内套筒320的外周面，滚珠330的内侧向内突出内套筒320的内周面，这样，滚珠330的外侧可与外套筒310的内表面滚动接触，滚珠330的内侧可与喷臂座200的外表面滚动接触，滚珠330与外套筒310、喷臂座200之间均为滚动接触，滚珠330为喷臂100与喷臂座200的连接提供了支撑。当喷臂100与喷臂座200发生相对转动时，外套筒310与喷臂座200之间通过滚珠330接触，因此外套筒310与喷臂座200之间为滚动摩擦。
滚珠外螺纹340设置在外套筒310的外周面上，滚珠外螺纹340与喷臂内螺纹121螺接配合，由此实现外套筒310与喷臂100的固定，喷臂100与外套筒310之间通过螺纹连接，装拆方便且连接可靠。此时，喷臂100与喷臂座200之间的摩擦形式相当于是滚动摩擦，可以减小水动力的损失，使水的能量更多地从喷臂100上的喷水孔和驱动孔喷出，保证水从喷水孔喷出后压力更大，利于洗净餐具，从而提升洗碗机的清洗性能。
在具体实施例中，多个滚珠孔350可沿内套筒320的周向均匀分布，由此可使喷臂100与喷臂座200的相对转动更加平稳。优选地，滚珠330的数量为偶数，由此可以保证滚珠组件300受力均衡，缓解应力集中现象。
可选地，滚珠330的直径为3mm-8mm，滚珠330的数量为4个-12个。
进一步地，参照图14-图15所示，喷臂座200可以包括：喷臂座本体210和喷臂座凸缘220，喷臂座凸缘220设置在喷臂座本体210的下方，且喷臂座凸缘220沿喷臂座本体210的径向向外延伸，喷臂座凸缘220的外径大于喷臂座本体210的外径，喷臂座凸缘220适于与洗碗机内的其它零部件相连，喷臂座凸缘220的外径较大，由此可使喷臂座200与其它零部件之间的固定更加稳定、可靠。喷臂座本体210的外周面上设置有适于与滚珠330配合的喷臂座滚珠槽270。
进一步地，外套筒310的内周面上设置有适于与滚珠330配合的外套筒滚珠槽313，外套筒滚珠槽313、喷臂座滚珠槽270均为周向环形槽，由此可以保证喷臂100整圈转动的顺畅性。滚珠330与外套筒滚珠槽313、喷臂座滚珠槽270之间为滚动接触，摩擦力较小。在具体实施例中，外套筒滚珠槽313、喷臂座滚珠槽270的直径可以与滚珠330的直径相等，或者也可以略大于滚珠330的直径，由此可保证滚珠330与外套筒滚珠槽313、喷臂座滚珠槽270配合良好。
进一步地，参照图11、图13、图15所示，在喷臂连接套120的中心轴线方向上，喷臂座滚珠槽270、外套筒滚珠槽313、滚珠孔350的位置相对应，滚珠330部分地设置在滚珠孔350中，滚珠330的外侧与外套筒滚珠槽313接触，滚珠330的内侧与喷臂座滚珠槽270接触，从而完成喷臂座200与外套筒310的连接，而外套筒310又与喷臂100固定连接，进而完成喷臂100与喷臂座200的间接连接。喷臂座滚珠槽270、外套筒滚珠槽313、滚珠孔350的位置相对应，可以防止喷臂100转动时，滚珠330所滑动的轨迹与喷臂座滚珠槽270以及外套筒滚珠槽313的轨迹不同，从而受到挤压，导致喷臂100无法转动。
具体地，参照图10-图11所示，外套筒310可以包括：外套筒周壁311和外套筒底壁312，外套筒底壁312设置在外套筒周壁311的远离喷臂100的一端，如图11所示，外套筒底壁312设置在外套筒周壁311的下端，且外套筒底壁312沿外套筒周壁311的径向向内延伸，外套筒滚珠槽313设置在外套筒底壁312与外套筒周壁311交界处，这样，滚珠330设置在外套筒底壁312的上方，由此，外套筒底壁312可对滚珠330起到一定的保护作用，防止滚珠330暴露在外而影响滚珠330的使用寿命。
此外，滚珠外螺纹340设置在外套筒周壁311的外周面上，外套筒滚珠槽313设置在外套筒周壁311的内周面上，且外套筒滚珠槽313设置在滚珠外螺纹340的下方，由此，外套筒310与喷臂100的固定位置位于上方，外套筒310与喷臂座200的配合位置位于下方，由此充分利用了高度空间，防止喷臂100与喷臂座200连接配合处的轴向尺寸太大。
可选地，参照图11、图13所示，喷臂座本体210的外周面与喷臂座凸缘220之间设置有多个肋板230，外套筒底壁312设置在肋板230的上方。通过设置肋板230，增加了喷臂座本体210与喷臂座凸缘220的结构强度和刚度，有效防止喷臂100高速转动时喷臂座200发生断裂、损坏，从而有利于延长喷臂组件1000的使用寿命。
多个肋板230沿喷臂座本体210的周向均匀分布，由此有利于提升喷臂座200的性能，可选地，肋板230的数量为四个，相邻两个肋板230间隔90°。
滚珠孔350设置在内套筒320的底部，如图13所示，滚珠孔350为优弧孔，且滚珠孔350的底部缺口处形成滚珠取放口351。滚珠330经滚珠取放口351进入滚珠孔350或从滚珠孔350出来，由此方便了滚珠330在滚珠孔350内的安装与拆卸。
进一步地，相邻的两个滚珠孔350之间设置有弱化槽360，且弱化槽360内设置有弱化槽立柱361，可选地，弱化槽立柱361的中心轴线与内套筒320的中心轴线平行，由此有利于简化内套筒320的加工工艺。通过设置弱化槽360，可使相邻的两个滚珠孔350之间的刚度较小，由此在安装滚珠330时，滚珠孔350容易变形，从而减小了滚珠330的安装或拆卸难度。此外，通过设置弱化槽立柱361，可以起到一定的强化作用，从而防止弱化槽360过度削弱内套筒320的刚度，进而有利于提高滚珠组件300的工作可靠性。
下面参照图16-图18详细说明本申请的第二个实施例。
如图16-图18所示，外套筒310上设置有多个滚珠孔350，滚珠330可转动地安装在滚珠孔350里，滚珠孔350为滚珠330的固定提供了支撑，保证多个滚珠330的相对位置不变，防止多个滚珠330之间发生碰撞、挤压，由此可以提高滚珠组件300的工作稳定性，从而可以进一步提高喷臂100转动时的平顺性。可选地，滚珠孔350的数量与滚珠330的数量相同。
需要说明的是，本申请中所说的外套筒310是指该套筒位于整个滚珠组件300的外侧，外套筒310的“外”是相对于内套筒320的“内”来讲的，即外套筒310位于内套筒320的外围，内套筒320被包围在外套筒310的中空内腔里，而不表示该外套筒310必须暴露在整个喷臂1000的外部。
滚珠330在外套筒310的径向上突出外套筒310的内周面和外周面，也就是说，滚珠330的直径大于外套筒310的壁厚，滚珠330有且仅有中间部分是安装在外套筒310内的，滚珠330的外侧向外突出外套筒310的外周面，滚珠330的内侧向内突出外套筒310的内周面，这样，滚珠330的外侧可与喷臂座200的内表面滚动接触，滚珠330的内侧可与内套筒320的外表面滚动接触，滚珠330与内套筒320、喷臂座200之间均为滚动接触，滚珠330为喷臂100与喷臂座200的连接提供了支撑。当喷臂100与喷臂座200发生相对转动时，内套筒320与喷臂座200之间通过滚珠330接触，因此内套筒320与喷臂座200之间为滚动摩擦。
滚珠外螺纹340设置在内套筒320的外周面上。滚珠外螺纹340与喷臂内螺纹121螺接配合，由此实现内套筒320与喷臂100的固定，喷臂100与内套筒320之间通过螺纹连接，装拆方便且连接可靠。同样地，喷臂100与喷臂座200之间的摩擦形式相当于是滚动摩擦，可以减小水动力的损失，使水的能量更多地从喷臂100上的喷水孔和驱动孔喷出，保证水从喷水孔喷出后压力更大，利于洗净餐具，从而提升洗碗机的清洗性能。
在具体实施例中，多个滚珠孔350可沿外套筒310的周向均匀分布，由此可使喷臂100与喷臂座200的相对转动更加平稳。优选地，滚珠330的数量为偶数，由此可以保证滚珠组件300受力均衡，缓解应力集中现象。参照图18所示，滚珠孔350位于外套筒310的中下部。
可选地，滚珠330的直径为3mm-8mm，滚珠330的数量为4个-12个。
具体地，喷臂座200可以包括：喷臂座进水轴240、喷臂座环壁260以及喷臂座周壁250，喷臂座环壁260设置在喷臂座进水轴240与喷臂座周壁250之间，喷臂座周壁250设置在喷臂座环壁260的上方，喷臂座周壁250与喷臂座环壁260垂直连接，且连接位置位于喷臂座周壁250的最下端以及喷臂座环壁260的最外端，喷臂座进水轴240设置在喷臂 座环壁260的下方，喷臂座进水轴240与喷臂座环壁260垂直连接，且连接位置位于喷臂座进水轴240的最上方以及喷臂座环壁260的最内端，喷臂座周壁250的直径大于喷臂座进水轴240的直径。喷臂座周壁250与喷臂座进水轴240平行，喷臂座进水轴240的内径与内套筒320的内径相等，由此可以保证喷臂座进水轴240与内套筒320中的水流速度相等，从而防止水速在喷臂座200与滚珠组件300的连接处突变而影响喷臂座200与喷臂100相对转动时的平稳性。
喷臂座周壁250所围空间形成适于容纳滚珠组件300的容纳空间，且该容纳空间位于喷臂座环壁260的上方。
喷臂座周壁250的内周面上设置有适于与滚珠330配合的喷臂座滚珠槽270。
进一步地，内套筒320的外周面上设置有适于与滚珠330配合的内套筒滚珠槽321，内套筒滚珠槽321和喷臂座滚珠槽270均为周向环形槽，由此可以保证喷臂100整圈转动的顺畅性。滚珠330与内套筒滚珠槽321、喷臂座滚珠槽270之间为滚动接触，摩擦力较小。在具体实施例中，内套筒滚珠槽321、喷臂座滚珠槽270的直径可以与滚珠330的直径相等，或者也可以略大于滚珠330的直径，由此可保证滚珠330与内套筒滚珠槽321、喷臂座滚珠槽270配合良好。
进一步地，参照图17所示，在喷臂连接套120的中心轴线方向上，喷臂座滚珠槽270、内套筒滚珠槽321、滚珠孔350的位置相对应，滚珠330部分地设置在滚珠孔350中，滚珠330的外侧与喷臂座滚珠槽270接触，滚珠330的内侧与内套筒滚珠槽321接触，从而完成喷臂座200与内套筒320的连接，而内套筒320又与喷臂100固定连接，进而完成喷臂100与喷臂座200的间接连接。喷臂座滚珠槽270、内套筒滚珠槽321、滚珠孔350的位置相对应，可以防止喷臂100转动时，滚珠330所滑动的轨迹与喷臂座滚珠槽270以及内套筒滚珠槽321的轨迹不同，从而受到挤压，导致喷臂100无法转动。
此外，滚珠外螺纹340和内套筒滚珠槽321均设置在内套筒320的外周面上，且内套筒滚珠槽321设置在滚珠外螺纹340的下方，由此，内套筒320与喷臂100的固定位置位于上方，内套筒320与喷臂座200的配合位置位于下方，由此充分利用了高度空间，防止喷臂100与喷臂座200连接配合处的轴向尺寸太大。
进一步地，内套筒320和外套筒310设置在喷臂座环壁260的上方，由此，喷臂座环壁260可对滚珠组件300起到一定的保护作用，防止滚珠组件300暴露在外而影响滚珠组件300的使用寿命。内套筒320的下表面与喷臂座环壁260的上表面之间的间隙为L1，L1满足关系式：0mm＜L1≤0.5mm，由此，在喷臂100与喷臂座200发生相对转动时，可以避免内套筒320的下表面与喷臂座环壁260的上表面之间接触而发生滑动摩擦，也就是说，内套筒320与喷臂座200之间无摩擦，此外，内套筒320的下表面与喷臂座环壁260的上 表面之间的间隙较小，可以防止残羹剩饭或者其他污染物进入间隙中而增加喷臂100与喷臂座200之间的摩擦力甚至卡死喷臂100，并且当喷臂100倾斜时，内套筒320可快速与喷臂座200接触，从而避免喷臂100进一步倾斜，也可以避免水过多地进入内套筒320与喷臂座环壁260之间而导致水动力损失。
喷臂座进水轴240的外周面与喷臂座环壁260之间设置有肋板(图中未示出)，以此增加喷臂座200的结构强度和刚度，从而有效防止喷臂100高速转动时喷臂座200发生断裂、损坏，有利于延长喷臂组件1000的使用寿命。
参照图10-图11、图16-图17所示，喷臂100可以包括：喷臂本体110和喷臂连接套120，喷臂连接套120设置在喷臂本体110的下侧，通过设置喷臂连接套120，方便了喷臂100与喷臂座200连接，保证了喷臂100与喷臂座200可以可靠地连接为一体。
喷臂连接套120与喷臂本体110内具有连通的喷臂腔室130，喷臂座200内具有与喷臂腔室130连通的喷臂座腔室280，由此可以保证洗碗机水源的水经喷臂座腔室280可以顺利地进入喷臂腔室130内，进而水经喷臂100上的喷水孔喷射到餐具表面，从而完成清洗餐具的操作。随着水持续地进入到喷臂腔室130，喷臂腔室130内的水压越来越高，此时从喷臂100驱动孔喷出的水柱所产生的反作用力也越大，喷臂100转动的速度也就越快，同时，喷出的水柱拍打在餐具上的力也越大，有利于清洗餐具上的污渍，因此通过设置喷臂腔室130，可以保证洗碗机的洗涤效果较好。喷臂100喷射到餐具上的水柱方向和位置是多向的，减少了死角更容易洗净，由于水流的覆盖率较大，清洗时间也会相应减少，即有利于缩短清洗时间。
喷臂内螺纹121设置在喷臂连接套120的内周面，如图11所示，外套筒310与喷臂内螺纹121螺接固定；如图17所示，内套筒320与喷臂内螺纹121螺接固定。
喷臂100与喷臂座200之间采用滚珠组件300连接之后，可以减小喷臂连接套120的高度尺寸，从而减小了喷臂组件1000的整体高度尺寸，为餐具的摆放留出了更多的空间。
在具体实施例中，滚珠330可以是塑料滚珠或不锈钢滚珠，因为喷臂组件1000的工作环境充满了水，喷臂组件1000长期处于湿热环境，易导致滚珠330生锈卡滞，塑料滚珠或不锈钢滚珠的防腐蚀能力较强，可以有效减缓甚至避免滚珠330生锈。
在一些未示出的实施例中，滚珠330可设置在外套筒310与内套筒320之间，也就是说，外套筒310和内套筒320上均没有开设滚珠孔350，外套筒310的内周面上设置有外套筒滚珠槽313，内套筒320的外周面上设置有内套筒滚珠槽321，滚珠330的外侧与外套筒滚珠槽313滚动接触，滚珠330的内侧与内套筒滚珠槽321滚动接触，同样可以实现喷臂100与喷臂座200的滚动连接，喷臂100与喷臂座200之间为滚动摩擦，有利于减小水动力消耗，从而提升喷臂组件1000的洗净能力。
根据本申请另一方面实施例的洗涤电器，包括上述实施例的喷臂组件1000。洗涤电器可以是洗碗机，也可以是果蔬清洗机、医疗清洗机等具有洗涤功能的洗涤电器，其效果与将喷臂组件1000设置在洗碗机内的效果类似，这里不再一一赘述。
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示例”、“具体示例”或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本申请的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不必须针对的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任何的一个或多个实施例或示例中以合适的方式结合。此外，本领域的技术人员可以将本说明书中描述的不同实施例或示例进行接合和组合。
尽管上面已经示出和描述了本申请的实施例，可以理解的是，上述实施例是示例性的，不能理解为对本申请的限制，本领域的普通技术人员在本申请的范围内可以对上述实施例进行变化、修改、替换和变型。

Claims (30)

  1. 一种喷臂组件，其特征在于，包括：
    喷臂，所述喷臂具有喷臂螺纹；
    喷臂座，所述喷臂与所述喷臂座相连，且所述喷臂相对于所述喷臂座可转动；
    滚珠组件，所述滚珠组件设置在所述喷臂与所述喷臂座的连接配合处，且所述滚珠组件包括：承载基体和滚珠，所述滚珠可转动地设置在所述承载基体上，所述承载基体上设置有与所述喷臂螺纹配合的滚珠螺纹。
  2. 根据权利要求1所述的喷臂组件，其特征在于，所述喷臂螺纹为喷臂外螺纹，所述滚珠螺纹为与所述喷臂内螺纹配合的滚珠内螺纹。
  3. 根据权利要求2所述的喷臂组件，其特征在于，所述喷臂包括：喷臂本体和喷臂连接套，所述喷臂连接套设置在所述喷臂本体的下侧，所述喷臂连接套与所述喷臂本体内具有连通的喷臂腔室，所述喷臂座内具有与所述喷臂腔室连通的喷臂座腔室，所述喷臂外螺纹设置在所述喷臂连接套的外周面。
  4. 根据权利要求3所述的喷臂组件，其特征在于，所述承载基体包括：
    外套筒，所述外套筒套设在所述喷臂连接套的外部，所述滚珠内螺纹设置在所述外套筒的内周面上。
  5. 根据权利要求4所述的喷臂组件，其特征在于，所述承载基体还包括：中间套筒，所述中间套筒设置在所述外套筒的内部，所述中间套筒上设置有多个滚珠孔，所述滚珠安装在所述滚珠孔里。
  6. 根据权利要求4或5所述的喷臂组件，其特征在于，所述承载基体还包括：内套筒，所述内套筒适于与所述喷臂座连接，且所述喷臂座与所述内套筒之间为可拆卸连接。
  7. 根据权利要求6所述的喷臂组件，其特征在于，所述外套筒的内周面上设置有适于与所述滚珠配合的外套筒滚珠槽，所述内套筒的外周面上设置有适于与所述滚珠配合的内套筒滚珠槽。
  8. 根据权利要求6所述的喷臂组件，其特征在于，所述内套筒的外周面上设置有内套筒外螺纹，所述喷臂座的内周面上设置有适于与所述内套筒外螺纹配合的喷臂座内螺纹，所述内套筒外螺纹设置在所述内套筒滚珠槽的下方。
  9. 根据权利要求6所述的喷臂组件，其特征在于，所述喷臂座至少部分地位于所述内套筒内侧，且所述喷臂座的顶部具有喷臂座卡扣，所述喷臂座卡扣适于卡在所述内套筒的上表面。
  10. 根据权利要求9所述的喷臂组件，其特征在于，所述喷臂座的顶端具有多个凹槽， 所述凹槽的开口方向与所述喷臂座的轴线方向平行，所述喷臂座卡扣从所述凹槽的底壁向上延伸，且所述喷臂座卡扣的两侧与所述凹槽的两个侧壁分离开，所述喷臂座卡扣的顶端设置有朝向所述内套筒的卡勾。
  11. 根据权利要求5所述的喷臂组件，其特征在于，所述滚珠孔设置在所述中间套筒的底部，所述滚珠孔为优弧孔且底部缺口处形成滚珠取放口。
  12. 根据权利要求4所述的喷臂组件，其特征在于，所述外套筒包括：外套筒周壁和外套筒底壁，所述外套筒底壁设置在所述外套筒周壁的远离所述喷臂的一端，且所述外套筒底壁沿所述外套筒周壁的径向向内延伸，所述滚珠设置在所述外套筒底壁的上方。
  13. 根据权利要求6所述的喷臂组件，其特征在于，所述喷臂连接套包括：连接套周壁和沿所述连接套周壁的径向向内延伸的连接套底壁，所述连接套底壁设置在所述连接套周壁的远离所述喷臂本体的一端，所述内套筒设置在所述连接套底壁的下方。
  14. 根据权利要求13所述的喷臂组件，其特征在于，所述连接套底壁的内径与所述内套筒的内径相等。
  15. 根据权利要求13所述的喷臂组件，其特征在于，所述内套筒的上表面与所述连接套底壁的下表面之间的间隙为L1，L1满足关系式：0mm＜L1≤0.5mm。
  16. 根据权利要求6所述的喷臂组件，其特征在于，所述喷臂座具有喷臂座进水孔，所述喷臂座进水孔的内径与所述内套筒的内径相等。
  17. 根据权利要求1所述的喷臂组件，其特征在于，所述喷臂螺纹为喷臂内螺纹，所述承载基体包括：外套筒、内套筒，所述外套筒套设在所述内套筒的外部，所述滚珠螺纹为与所述喷臂内螺纹配合的滚珠外螺纹，所述滚珠外螺纹设置在所述外套筒或所述内套筒上。
  18. 根据权利要求17所述的喷臂组件，其特征在于，所述内套筒上设置有多个滚珠孔，所述滚珠安装在所述滚珠孔里，所述滚珠外螺纹设置在所述外套筒的外周面上。
  19. 根据权利要求18所述的喷臂组件，其特征在于，所述喷臂座包括：喷臂座本体，所述喷臂座本体的外周面上设置有适于与所述滚珠配合的喷臂座滚珠槽。
  20. 根据权利要求19所述的喷臂组件，其特征在于，所述外套筒的内周面上设置有适于与所述滚珠配合的外套筒滚珠槽，所述外套筒滚珠槽、所述喷臂座滚珠槽均为周向环形槽。
  21. 根据权利要求19所述的喷臂组件，其特征在于，所述外套筒包括：外套筒周壁和外套筒底壁，所述外套筒底壁设置在所述外套筒周壁的远离所述喷臂的一端，且所述外套筒底壁沿所述外套筒周壁的径向向内延伸，所述滚珠设置在所述外套筒底壁的上方。
  22. 根据权利要求19或21所述的喷臂组件，其特征在于，所述喷臂座还包括：沿所述喷臂座本体的径向向外延伸的喷臂座凸缘，所述喷臂座凸缘设置在所述喷臂座本体的下方，所述喷臂座本体的外周面与所述喷臂座凸缘之间设置有多个肋板。
  23. 根据权利要求18所述的喷臂组件，其特征在于，所述滚珠孔设置在所述内套筒的底部，所述滚珠孔为优弧孔且底部缺口处形成滚珠取放口。
  24. 根据权利要求17所述的喷臂组件，其特征在于，所述外套筒上设置有多个滚珠孔，所述滚珠安装在所述滚珠孔里，所述滚珠外螺纹设置在所述内套筒的外周面上。
  25. 根据权利要求24所述的喷臂组件，其特征在于，所述喷臂座包括：喷臂座进水轴、喷臂座周壁以及设置在所述喷臂座进水轴、所述喷臂座周壁之间的喷臂座环壁，所述喷臂座周壁设置在所述喷臂座环壁的上方，所述喷臂座进水轴设置在所述喷臂座环壁的下方，所述喷臂座周壁所围空间形成适于容纳所述滚珠组件的容纳空间，且所述容纳空间位于所述喷臂座环壁的上方。
  26. 根据权利要求25所述的喷臂组件，其特征在于，所述喷臂座进水轴的内径与所述内套筒的内径相等。
  27. 根据权利要求25所述的喷臂组件，其特征在于，所述内套筒的外周面上设置有适于与所述滚珠配合的内套筒滚珠槽，所述喷臂座周壁的内周面上设置有适于与所述滚珠配合的喷臂座滚珠槽，所述内套筒滚珠槽和所述喷臂座滚珠槽均为周向环形槽。
  28. 根据权利要求25所述的喷臂组件，其特征在于，所述内套筒和所述外套筒设置在所述喷臂座环壁的上方，且所述内套筒的下表面与所述喷臂座环壁的上表面之间的间隙为L1，L1满足关系式：0mm＜L1≤0.5mm。
  29. 根据权利要求18或24所述的喷臂组件，其特征在于，所述喷臂包括：喷臂本体和喷臂连接套，所述喷臂连接套设置在所述喷臂本体的下侧，所述喷臂连接套与所述喷臂本体内具有连通的喷臂腔室，所述喷臂座内具有与所述喷臂腔室连通的喷臂座腔室，所述喷臂内螺纹设置在所述喷臂连接套的内周面。
  30. 一种洗涤电器，其特征在于，包括根据权利要求1-29中任一项所述的喷臂组件。
PCT/CN2019/094275 2018-08-28 2019-07-01 喷臂组件及具有其的洗涤电器 WO2020042752A1 (zh)

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