A clutch-controlled electric spray arm

Abstract

The present invention discloses a clutch-controlled electric spray arm, which includes a water cup, a spray arm, a support, a lifting plate, a drive motor and a wax motor. A central shaft for driving the shaft tube to rotate is provided at the center of the support. A valve sleeve extending downward is formed at the center of the valve plate. The drive shaft of the drive motor is connected to a clutch shaft rod. The upper end of the clutch shaft rod is formed with a clutch sleeve that can be sleeved on the outside of the central shaft. The lower end of the central shaft and the clutch sleeve are both located in the valve sleeve. When the clutch sleeve rises, it is in transmission with the central shaft. When the clutch sleeve descends, it is in transmission with the valve sleeve. Compared with the prior art, the present invention integrates the spray arm drive and water diversion control functions into one mechanism, making the overall structure more compact, thereby saving inner tank space. In addition, based on the cooperation of the wax motor and the drive motor, flexible switching of the water spraying and water diversion functions can be achieved, which better meets the design requirements.

Description

Technical Field

[0001] The invention relates to a dishwasher, in particular to a clutch-controlled electric spray arm. Background Art

[0002] The water delivered by the dishwasher cup is not only used to supply the spray arm, but also needs to be divided by a water distribution mechanism and then sent to other water channels. For relevant mechanisms, please refer to the Chinese patent publication with publication number CN110403553B, entitled "Spray Arm Assembly for Dishwasher and Dishwasher", which records:

[0003] "A spray arm assembly for a dishwasher includes: a water diverter having a water inlet and a water outlet; a spray arm having a water inlet and a plurality of water spray holes; and a connecting assembly connecting the water outlet and the water inlet and having a telescopic section, wherein the connecting assembly is adapted to be connected to a bowl basket of the dishwasher and is configured such that the telescopic section is retractable when the position of the bowl basket changes. According to the spray arm assembly for a dishwasher, the connection structure can be simplified, the variety of movement methods can be increased, and misoperation of the spray arm and water leakage when adjusting the position of the bowl basket can be prevented. The length of the spray arm can also be increased, thereby improving washing performance."

[0004] In the above structure, the water distribution mechanism and the spray arm mechanism are independent of each other, which not only occupies the inner tank space, but also requires independent driving mechanisms for spray arm drive and water distribution control. It lacks linkage capability and the composition structure is relatively complex. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a clutch-controlled electric spray arm with compact structure, space saving and flexible switching, in view of the shortcomings of the existing technology.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions.

[0007] A clutch-controlled electric spray arm includes a water cup, a spray arm, a support, a lifting plate, a driving motor and a wax motor, wherein the water cup is provided with a water inlet chamber, and the side of the water cup is provided with a water inlet pipe head connected to the water inlet chamber, the support is fixedly connected to the water cup, and the support covers the water inlet chamber, a first water distribution pipe head, a second water distribution pipe head and an upper water hole are formed on the support, a spray arm support sleeve is fixed on the support, the spray arm is rotatably connected to the spray arm support sleeve, a shaft tube is provided in the spray arm support sleeve, the shaft tube is used to drive the spray arm to rotate and the two are connected to each other, the lower end of the shaft tube is connected to the upper water hole, and the shaft tube rotates with the support, a central shaft for driving the shaft tube to rotate is passed through the center of the support, and the bottom surface of the support fits There is a valve plate and the two are rotatably matched. A first through hole and a second through hole are provided on the valve plate. A valve plate sleeve extending downward is formed at the center of the valve plate. The lifting plate is located below the water cup. The drive motor is fixed to the bottom of the lifting plate. The wax motor is fixed to the outside of the water cup, and the wax motor is used to lift the drive motor and the lifting plate. The drive shaft of the drive motor is connected to a clutch shaft rod, and the clutch shaft rod passes through the bottom of the water inlet chamber and the two are rotatably matched. The upper end of the clutch shaft rod is formed with a clutch shaft sleeve that can be sleeved on the outside of the central shaft. The lower end of the central shaft and the clutch shaft sleeve are both located in the valve plate shaft sleeve. When the clutch shaft sleeve rises, it is transmitted and matched with the central shaft. When the clutch shaft sleeve descends, it is transmitted and matched with the valve plate shaft sleeve.

[0008] Preferably, the inner wall of the clutch sleeve is evenly distributed with a plurality of first key grooves, and the outer wall of the central shaft is evenly distributed with a plurality of first pin keys. When the clutch shaft rises, the first pin keys are inserted into the first key grooves one by one.

[0009] Preferably, the outer side wall of the clutch sleeve is evenly distributed with a plurality of second pin keys, and the inner side wall of the valve sleeve is evenly distributed with a plurality of second key grooves. When the clutch shaft is lowered, the second pin keys are inserted into the second key grooves one by one.

[0010] Preferably, the lower end of the first pin key and the upper end of the second pin key are both provided with wedge-shaped ends.

[0011] Preferably, a gear cover is provided at the lower end of the spray arm support sleeve, and the gear cover is fixedly connected to the support. A driving gear and a driven gear that mesh with each other are provided on the inner side of the gear cover. The center shaft passes through the driving gear and the two are fixedly connected. The shaft tube passes through the driven gear and the two are fixedly connected.

[0012] Preferably, a shaft tube sealing ring is sleeved on the shaft tube, the shaft tube sealing ring is located above the driven gear, and the shaft tube sealing ring is sealingly connected between the shaft tube and the spray arm supporting sleeve.

[0013] Preferably, a notch is provided at the upper end of the shaft tube, a downwardly extending connecting tube is formed at the center of the spray arm, a protrusion is formed on the inner wall of the connecting tube, the shaft tube is inserted into the connecting tube and the two are sealed together, and the protrusion is clamped in the notch.

[0014] Preferably, a turntable is formed at the lower end of the clutch shaft, the turntable is arranged below the lifting plate, and the driving shaft of the driving motor is coaxially connected to the turntable.

[0015] Preferably, a spring is sleeved on the outer side of the clutch shaft, and the spring is clamped between the lifting plate and the bottom of the water cup.

[0016] Preferably, a vertical plate is fixed to the outside of the water cup, the wax motor is fixedly connected to the vertical plate, and the driving end of the wax motor abuts against the bottom of the driving motor.

[0017] In the clutch-controlled electric spray arm disclosed in the present invention, the wax motor is used to drive the lifting plate and the drive motor to move upward and downward, thereby achieving clutch switching control. The drive motor is used to drive the central shaft or the valve plate to rotate, thereby achieving rotational drive of the spray arm or control of the valve plate position. Compared with the existing technology, the present invention integrates the spray arm drive and water distribution control functions into a single mechanism, making the overall structure more compact and thus saving internal tank space. In addition, based on the cooperation of the wax motor and the drive motor, flexible switching between water spraying and water distribution functions can be achieved, which better meets the design requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The three-dimensional clutch control electric spray arm of the present invention Figure 1 ;

[0019] Figure 2 The three-dimensional clutch control electric spray arm of the present invention Figure 2 ;

[0020] Figure 3 This is a partial exploded view of the clutch-controlled electric spray arm of the present invention;

[0021] Figure 4 This is the structural diagram of the water cup;

[0022] Figure 5 For the three-dimensional support, lifting plate, drive motor and wax motor Figure 1 ;

[0023] Figure 6For the three-dimensional support, lifting plate, drive motor and wax motor Figure 2 ;

[0024] Figure 7 Disassembly of the support, lifting plate, drive motor and wax motor Figure 1 ;

[0025] Figure 8 Disassembly of the support, lifting plate, drive motor and wax motor Figure 2 ;

[0026] Figure 9 This is an exploded view of the support, valve plate and clutch shaft;

[0027] Figure 10 is a three-dimensional diagram of a clutch shaft;

[0028] Figure 11 A cross-sectional view of the clutch-controlled electric spray arm of the present invention;

[0029] Figure 12 is a three-dimensional diagram of the spray arm;

[0030] Figure 13 The clutch shaft drives the valve disc to rotate Figure 1 ;

[0031] Figure 14 The clutch shaft drives the valve disc to rotate Figure 2 . DETAILED DESCRIPTION

[0032] The present invention will be described in more detail below with reference to the accompanying drawings and embodiments.

[0033] The present invention discloses a clutch-controlled electric spray arm, combined with Figures 1 to 14As shown, it includes a water cup 1, a spray arm 2, a support 3, a lifting plate 4, a drive motor 5 and a wax motor 6. The water cup 1 is provided with a water inlet cavity 10, and the side of the water cup 1 is provided with a water inlet pipe head 11 connected to the water inlet cavity 10. The support 3 is fixedly connected to the water cup 1, and the support 3 covers the water inlet cavity 10. The support 3 is formed with a first water distribution pipe head 30, a second water distribution pipe head 31 and an upper water hole 34. The support 3 is fixed with a spray arm. The support sleeve 32 is provided with a shaft tube 33 in the spray arm support sleeve 32. The shaft tube 33 is used to drive the spray arm 2 to rotate and the two are connected to each other. The lower end of the shaft tube 33 is connected to the upper water hole 34, and the shaft tube 33 is rotated with the support 3. The center of the support 3 is provided with a central shaft 35 for driving the shaft tube 33 to rotate. The bottom surface of the support 3 is attached with a valve plate 3 6 and the two rotate in cooperation, the valve plate 36 is provided with a first through hole 360 ​​and a second through hole 361, and a valve plate shaft sleeve 362 extending downward is formed at the center of the valve plate 36, the lifting plate 4 is located below the water cup 1, the driving motor 5 is fixed to the bottom of the lifting plate 4, the wax motor 6 is fixed to the outside of the water cup 1, and the wax motor 6 is used to lift the driving motor 5 and the lifting plate 4, the driving shaft of the driving motor 5 is connected to the clutch shaft rod 50, the clutch shaft rod 50 passes through the bottom of the water inlet chamber 10 and the two rotate in cooperation, the upper end of the clutch shaft rod 50 is formed with a clutch shaft sleeve 51 which can be sleeved on the outside of the central shaft 35, the lower end of the central shaft 35 and the clutch shaft sleeve 51 are both located in the valve plate shaft sleeve 362, when the clutch shaft sleeve 51 rises, it is transmitted and cooperated with the central shaft 35, and when the clutch shaft sleeve 51 descends, it is transmitted and cooperated with the valve plate shaft sleeve 362.

[0034] See Figures 1 to 8 In the above structure, the wax motor 6 is used to drive the lifting plate 4 and the driving motor 5 to move up and down, thereby realizing clutch switching control. The driving motor 5 is used to drive the central shaft 35 or the valve disc 36 to rotate, thereby realizing the rotation drive of the spray arm 2 or the control of the position of the valve disc 36. Specifically, before the dishwasher performs the washing operation, the wax motor 6 does not lift the driving motor 5, so that the clutch shaft 50 and the valve disc shaft sleeve 362 are in transmission cooperation. The driving motor 5 drives the valve disc 36 to rotate a preset angle through the clutch shaft 50 and the valve disc shaft sleeve 362 until the valve disc 36 moves to the position as shown in the figure. Figure 13In the water supply state shown, the shaft tube 33 and the first water distribution pipe head 30 are now connected to the water inlet chamber 10, and water is supplied to the spray arm 2 through the shaft tube 33, and then the wax motor 6 moves and lifts the drive motor 5. The clutch shaft 50 is separated from the valve plate sleeve 362 and then transmitted to the central shaft 35. The drive motor 5 drives the spray arm 2 to rotate and spray water through the clutch shaft 50 and the central shaft 35; when the spray arm 2 finishes working, the wax motor 6 retreats and does not lift the drive motor 5, so that the clutch shaft 50 is again transmitted and matched with the valve plate sleeve 362, and the drive motor 5 drives the valve plate 36 to rotate a preset angle through the clutch shaft 50 and the valve plate sleeve 362 until the valve plate 36 moves to Figure 14 In the water diversion state shown, both the first water diversion head 30 and the second water diversion head 31 are connected to the water inlet chamber 10. Compared to the prior art, the present invention integrates the spray arm drive and water diversion control functions into a single mechanism, making the overall structure more compact and thus saving space in the inner tank. In addition, the coordination between the wax motor 6 and the drive motor 5 enables flexible switching between the water spraying and water diversion functions, effectively meeting design requirements.

[0035] Combine Figures 7 to 10 As shown, in order to realize the selective linkage between the clutch sleeve 51 and the central shaft 35 and the valve plate sleeve 362, in this embodiment, the inner wall of the clutch sleeve 51 is evenly distributed with a plurality of first key grooves 511, and the outer wall of the central shaft 35 is evenly distributed with a plurality of first pin keys 350. When the clutch shaft 50 rises, the first pin keys 350 are inserted into the first key grooves 511 one by one.

[0036] Correspondingly, the outer wall of the clutch sleeve 51 is evenly distributed with multiple second pin keys 510, and the inner wall of the valve sleeve 362 is evenly distributed with multiple second key grooves 363. When the clutch shaft 50 descends, the second pin keys 510 are inserted into the second key grooves 363 one by one.

[0037] As a preferred embodiment, the lower end of the first pin key 350 and the upper end of the second pin key 510 are both provided with wedge-shaped ends.

[0038] In the above structure, based on the cooperation between the pin key and the keyway, the plug-in linkage between the clutch sleeve 51 and the central shaft 35 and the valve plate sleeve 362 is facilitated. At the same time, the provision of a wedge-shaped end also facilitates the insertion of the pin key into the keyway to avoid jamming.

[0039] See Figure 8Regarding the preferred linkage method between the central shaft 35 and the shaft tube 33, in this embodiment, a gear cover 320 is provided at the lower end of the spray arm support sleeve 32, and the gear cover 320 is fixedly connected to the support 3. The inner side of the gear cover 320 is provided with a driving gear 321 and a driven gear 322 that mesh with each other. The central shaft 35 passes through the driving gear 321 and the two are fixedly connected, and the shaft tube 33 passes through the driven gear 322 and the two are fixedly connected.

[0040] Specifically, the gear cover 320 and the support 3 are in a sealed fit relationship, so that the driving gear 321 and the driven gear 322 are in a closed waterproof space. On this basis, in order to seal the outer area of ​​the shaft tube 33, in this embodiment, see Figure 7 A shaft tube sealing ring 323 is sleeved on the shaft tube 33 , and the shaft tube sealing ring 323 is located above the driven gear 322 , and the shaft tube sealing ring 323 is sealed and connected between the shaft tube 33 and the spray arm support sleeve 32 .

[0041] Combine Figure 8 and Figure 12 As shown, in order to make the spray arm 2 detachable and easy to plug and match with the shaft tube 33, in this embodiment, a notch 330 is provided at the upper end of the shaft tube 33, and a downwardly extending connecting tube 20 is formed at the center of the spray arm 2. A protrusion 21 is formed on the inner wall of the connecting tube 20, and the shaft tube 33 is inserted into the connecting tube 20 and the two are sealed together, and the protrusion 21 is clamped in the notch 330.

[0042] As a preferred embodiment, a turntable 52 is formed at the lower end of the clutch shaft 50. The turntable 52 is disposed below the lifting plate 4, and the drive shaft of the drive motor 5 is coaxially connected to the turntable 52. In the above structure, the provision of the turntable 52 at the lower end of the clutch shaft 50 improves the rotational stability of the clutch shaft 50. The turntable 52 not only ensures more stable rotational matching with the lifting plate 4, but also prevents undesirable conditions such as wobbling during the rotation of the clutch shaft 50.

[0043] In actual application, when the wax motor 6 removes the lifting force on the drive motor 5, it is necessary to drive the lifting plate 4 and the drive motor 5 to automatically fall back. In order to achieve this function, in this embodiment, combined with Figures 1 to 3 As shown, a spring 7 is sleeved on the outer side of the clutch shaft 50 , and the spring 7 is clamped between the lifting plate 4 and the bottom of the water cup 1 .

[0044] See Figure 1 and Figure 2In order to reliably fix the wax motor 6, in this embodiment, a vertical plate 8 is fixed to the outside of the water cup 1, the wax motor 6 is fixedly connected to the vertical plate 8, and the driving end of the wax motor 6 is in contact with the bottom of the driving motor 5.

[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements or improvements made within the technical scope of the present invention should be included in the scope of protection of the present invention.

Claims

1. A clutch-controlled electric spray arm, characterized in that: The invention comprises a water cup (1), a spray arm (2), a support (3), a lifting plate (4), a driving motor (5) and a wax motor (6); the water cup (1) is provided with a water inlet cavity (10); a side of the water cup (1) is provided with a water inlet pipe head (11) connected to the water inlet cavity (10); the support (3) is fixedly connected to the water cup (1), and the support (3) covers the water inlet cavity (10); a first water distribution pipe head (30), a second water distribution pipe head (31) and an upper water hole (34) are formed on the support (3); A spray arm support sleeve (32) is fixed, the spray arm (2) is rotatably connected to the spray arm support sleeve (32), a shaft tube (33) is provided in the spray arm support sleeve (32), the shaft tube (33) is used to drive the spray arm (2) to rotate and the two are connected to each other, the lower end of the shaft tube (33) is connected to the upper water hole (34), and the shaft tube (33) and the support (3) are rotatably matched, the center of the support (3) is penetrated by a central shaft (35) for driving the shaft tube (33) to rotate, and the bottom surface of the support (3) is in contact with the support (3). There is a valve plate (36) and the two are rotatably matched, the valve plate (36) is provided with a first through hole (360) and a second through hole (361), a valve plate shaft sleeve (362) extending downward is formed at the center of the valve plate (36), the lifting plate (4) is located below the water cup (1), the driving motor (5) is fixed to the bottom of the lifting plate (4), the wax motor (6) is fixed to the outside of the water cup (1), and the wax motor (6) is used to lift the driving motor (5) and the lifting plate (4), the driving motor (5) The driving shaft is connected to a clutch shaft (50), the clutch shaft (50) passes through the bottom of the water inlet chamber (10) and the two are rotatably matched, the upper end of the clutch shaft (50) is formed with a clutch shaft sleeve (51) that can be sleeved on the outside of the central shaft (35), the lower end of the central shaft (35) and the clutch shaft sleeve (51) are both located in the valve plate shaft sleeve (362), when the clutch shaft sleeve (51) rises, it is in transmission cooperation with the central shaft (35), and when the clutch shaft sleeve (51) falls, it is in transmission cooperation with the valve plate shaft sleeve (362).

2. The clutch-controlled electric spray arm according to claim 1, characterized in that: The inner wall of the clutch sleeve (51) is uniformly distributed with a plurality of first key slots (511), and the outer wall of the central shaft (35) is uniformly distributed with a plurality of first pin keys (350). When the clutch shaft (50) rises, the first pin keys (350) are inserted into the first key slots (511) in a one-to-one correspondence.

3. The clutch-controlled electric spray arm according to claim 2, characterized in that: The outer side wall of the clutch sleeve (51) is uniformly distributed with a plurality of second pin keys (510), and the inner side wall of the valve sleeve (362) is uniformly distributed with a plurality of second key grooves (363). When the clutch shaft (50) descends, the second pin keys (510) are inserted into the second key grooves (363) in a one-to-one correspondence.

4. The clutch-controlled electric spray arm according to claim 3, characterized in that: The lower end of the first pin key (350) and the upper end of the second pin key (510) are both provided with wedge-shaped ends.

5. The clutch-controlled electric spray arm according to claim 1, characterized in that: A gear cover (320) is provided at the lower end of the spray arm support sleeve (32), and the gear cover (320) is fixedly connected to the support (3). A driving gear (321) and a driven gear (322) that mesh with each other are provided on the inner side of the gear cover (320). The central shaft (35) passes through the driving gear (321) and the two are fixedly connected. The shaft tube (33) passes through the driven gear (322) and the two are fixedly connected.

6. The clutch-controlled electric spray arm according to claim 5, characterized in that: A shaft tube sealing ring (323) is sleeved on the shaft tube (33), the shaft tube sealing ring (323) is located above the driven gear (322), and the shaft tube sealing ring (323) is sealingly connected between the shaft tube (33) and the spray arm support sleeve (32).

7. The clutch-controlled electric spray arm according to claim 1, characterized in that: A notch (330) is provided at the upper end of the shaft tube (33), a connecting tube (20) extending downward is formed at the center of the spray arm (2), a protrusion (21) is formed on the inner wall of the connecting tube (20), the shaft tube (33) is inserted into the connecting tube (20) and the two are sealed together, and the protrusion (21) is clamped in the notch (330).

8. The clutch-controlled electric spray arm according to claim 1, characterized in that: A turntable (52) is formed at the lower end of the clutch shaft (50), and the turntable (52) is arranged below the lifting plate (4). The drive shaft of the drive motor (5) is coaxially connected to the turntable (52).

9. The clutch-controlled electric spray arm according to claim 1, characterized in that: A spring (7) is sleeved on the outer side of the clutch shaft (50), and the spring (7) is clamped between the lifting plate (4) and the bottom of the water cup (1).

10. The clutch-controlled electric spray arm according to claim 1, characterized in that: A vertical plate (8) is fixed to the outside of the water cup (1), the wax motor (6) is fixedly connected to the vertical plate (8), and the driving end of the wax motor (6) is in contact with the bottom of the driving motor (5).

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