A spray arm of a dishwasher and a manufacturing method thereof

Abstract

The invention discloses a spray arm of a dishwasher and a manufacturing method thereof, comprising a spray arm body and a mounting seat, the spray arm body comprising a connecting arm and a telescopic arm, the connecting arm being provided with a first cavity, the telescopic arm being provided with a second cavity, the connecting arm being connected to the telescopic arm, the first cavity being communicated with the second cavity, the connecting arm being provided with a connecting seat, the connecting seat being provided on the mounting seat, the telescopic arm being provided with an annular groove, the annular groove being provided with a rotating sleeve, the rotating sleeve being rotatably connected with the telescopic arm, the rotating sleeve being provided with a spray hole, the spray hole being communicated with the second cavity; the method adopts a preparation, b assembly of the first transmission shaft and the transmission sleeve, c installation of the spray arm body and the rotating sleeve, d assembly of the fixed shell, e installation of the first transmission shaft and the transmission sleeve, f calibration of the mounting seat, and g overall operation detection. The invention realizes that the spray angle of the spray hole can be adjusted, so that the spray angle is wider, the spray efficiency is higher, and the spray effect is better; the steps are optimized, the manufacturing steps are simplified, and the production efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of dishwashers, and in particular relates to a spray arm of a dishwasher and a manufacturing method thereof. Background Art

[0002] A dishwasher is a device that automatically washes tableware such as bowls, chopsticks, plates, dishes, knives, forks, etc. Household fully automatic dishwashers are only suitable for families, and are mainly cabinet-type, table-top and integrated with sink. Using a dishwasher to wash tableware can greatly reduce tedious manual labor. Just put the tableware to be washed into the dishwasher, turn on the faucet, press a button, and you can do other things with confidence, because there is no need for anyone to wait during the washing process, and the operation can be completed automatically. The angle of the spray hole of the existing dishwasher cannot be adjusted, and the fixed spray hole will make it difficult to spray some parts of the dishes, and the spray effect is poor. At the same time, the manufacturing process of the existing spray arm is cumbersome and the manufacturing precision is low, which needs further optimization. Summary of the invention

[0003] The purpose of the present invention is to solve the above-mentioned technical problems existing in the prior art, and to provide a spray arm of a dishwasher and a manufacturing method thereof, which can adjust the angle of the spray hole to improve the spray effect, and at the same time facilitate the manufacture of the spray arm, have high manufacturing precision, save manufacturing time, and improve manufacturing efficiency.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] A spray arm of a dishwasher comprises a spray arm body and a mounting seat, characterized in that: the spray arm body comprises a connecting arm and a telescopic arm, the connecting arm is provided with a first cavity, the telescopic arm is provided with a second cavity, the connecting arm is connected to the telescopic arm, the first cavity and the second cavity are communicated, the connecting arm is provided with a connecting seat, the connecting seat is arranged on the mounting seat, the telescopic arm is provided with an annular groove, the annular groove is provided with a rotating sleeve, the rotating sleeve is rotatably connected to the telescopic arm, the rotating sleeve is provided with a spray hole, and the spray hole is communicated with the second cavity. Through the rotatable connection between the rotating sleeve and the telescopic arm, the spray angle of the spray hole can be adjusted, which can make the spray angle wider, the spray efficiency higher, and the spray effect better.

[0006] Furthermore, the connecting arm is slidably connected to the telescopic arm, the connecting arm is provided with a spray port, and the telescopic arm is against the top of the spray port. The sliding connection between the connecting arm and the telescopic arm enables the extension of the spray arm body and the position adjustment of the spray port. At the same time, when the telescopic arm is extended, the spray port against which the telescopic arm is extended can spray, and the additional spray port during extension can improve the spray effect.

[0007] Furthermore, the connecting arm is provided with a first fixed shell, the telescopic arm is provided with a second fixed shell, the first fixed shell is slidably connected to the second fixed shell, the first fixed shell is rotatably connected to a transmission sleeve and a second transmission shaft, the second transmission shaft and the transmission sleeve are meshed, the second fixed shell is rotatably connected to the first transmission shaft, the first transmission shaft is arranged in the transmission sleeve, the first transmission shaft and the transmission sleeve are slidably connected, the rotating sleeve is provided with a first external tooth, the first transmission shaft is provided with a first gear, the first gear is meshed with the first external tooth, the mounting seat is provided with an internal gear, the internal gear is rotatably connected to the mounting seat, and the internal gear is meshed with the second transmission shaft. The transmission form of the first transmission shaft, the second transmission shaft and the transmission sleeve is adopted to realize the control of the rotation angle of the rotating sleeve, and at the same time, the connection mode of the transmission sleeve and the first transmission shaft can adapt to the extension and retraction of the telescopic arm, that is, when the telescopic arm is extended and retracted, the first transmission shaft, the second transmission shaft and the transmission sleeve can also be used to accurately adjust the angle of the rotating sleeve to realize the precise adjustment of the spray hole.

[0008] Furthermore, the telescopic arm is provided with a screw rod, the screw rod is provided with a nut, the nut is provided with a second external tooth, the transmission sleeve is provided with a second gear, the second gear is rotatably connected to the transmission sleeve, the second gear is meshed with the second external tooth, and the first fixed shell is provided with a third gear, the third gear is rotatably connected to the first fixed shell, and the third gear is meshed with the second gear. Through the cooperation of the screw rod, the nut, the second gear and the third gear, the transmission of the telescopic arm is realized. After the third gear is connected to the output shaft of the motor, the telescopic arm can be controlled to adjust the telescopic amount according to the amount of dishes, thereby realizing intelligent cleaning, improving the cleaning effect and saving water. The setting method of the second gear makes the structure of the nut, the screw rod, the second gear and the third gear compact, and effectively uses the space between the transmission sleeve and the connecting arm, occupies a small space and has a good transmission effect.

[0009] Furthermore, a water inlet sleeve is provided in the mounting seat, and the water inlet sleeve is connected to the connecting seat. The mounting seat is arranged on the inner tank of the dishwasher to fix the spray arm body on the dishwasher, and the spray arm body can be separately disassembled through the mounting seat. When disassembly is required, the spray arm body only needs to be removed from the mounting seat.

[0010] Furthermore, the rotating sleeve includes a first half ring and a second half ring, the spray hole is arranged on the first half ring, the inner side surfaces of the first half ring and the second half ring are both provided with a limiting protrusion, the first half ring is provided with a positioning protrusion, the second half ring is provided with a first positioning groove, the positioning protrusion is arranged in the first positioning groove, the first half ring and the second half ring are both provided with a clamping groove, and a sealing ring is arranged in the clamping groove. The rotating sleeve adopts the connection mode of the first half ring and the second half ring, which can not only facilitate the production and processing of the rotating sleeve, but also facilitate the production of the half ring compared with the complete ring, and the yield rate is higher. It is more convenient to process the clamping groove in the half ring, and it can also be convenient for installation. The first half ring and the second half ring can be clamped and fixed. The limiting protrusion can limit the rotation angle of the rotating sleeve to avoid the spray hole being blocked by too large a rotation angle. The cooperation of the clamping groove and the sealing ring improves the sealing performance and reduces the occurrence of water leakage between the rotating sleeve and the telescopic arm. The positioning protrusion and the first positioning groove achieve a positioning effect, which is convenient for the clamping and installation of the first half ring and the second half ring.

[0011] Furthermore, the first fixed shell is provided with a first positioning block, the first positioning block is provided in the telescopic arm, the telescopic arm is provided with a second positioning groove, the second fixed shell is provided with a second positioning block, and the second positioning block is provided in the second positioning groove. The first positioning groove, the first positioning block, the second positioning groove, and the second positioning block facilitate the connection and positioning of the connecting arm and the first fixed shell, and the connection and positioning of the telescopic arm and the second fixed shell, making it more convenient to align the first gear with the external teeth, and to align the nut with the second gear.

[0012] Furthermore, the first fixing shell is provided with a first buckle, the first buckle clamps the transmission sleeve, and the second fixing shell is provided with a second buckle, the second buckle clamps the first transmission shaft. The buckle form facilitates the positioning and installation of the transmission shaft and the transmission sleeve.

[0013] A method for manufacturing a spray arm of a dishwasher, characterized by comprising the following steps:

[0014] a. Preparation: Check all parts, add any missing parts, and then check the mounting bracket to ensure that it can be used normally. Preparatory work before manufacturing can avoid missing parts and unusable mounting brackets, which can improve manufacturing efficiency.

[0015] b. Assembly of the first transmission shaft and transmission sleeve: insert the first gear into the first transmission shaft, then adjust the spacing of the first gear according to the spacing between the first external teeth, then insert the second gear into the transmission sleeve, and adjust the position of the second gear on the transmission sleeve. The assembly of the transmission shaft and transmission sleeve ensures the convenience of the subsequent installation of the first transmission shaft and transmission sleeve, which can save time and improve efficiency.

[0016] c. Installation of the spray arm body and the rotating sleeve: clamp the telescopic arm on the connecting arm, then insert two sealing rings on each annular groove, clamp the spray hole on the first half ring, then align the slots of the first half ring and the second half ring with the sealing ring, buckle the first half ring and the second half ring, screw on the fixing screws, then put the nut on the screw rod, and fix the screw rod on the connecting arm. Install the telescopic arm on the connecting arm, install the rotating sleeve on the telescopic arm, and then align and buckle the first half ring and the second half ring so that the sealing ring can be accurately clamped in the slot, improving the connection effect of the first half ring and the second half ring, and then fix the screw rod and the nut to facilitate the subsequent installation of the second gear and the third gear.

[0017] d. Assembly of the fixed shell: insert the second fixed shell into the first fixed shell, insert the first fixed shell and the second fixed shell into the first mounting groove of the mounting bracket, and fix the first fixed shell and the second fixed shell. After the first fixed shell and the second fixed shell are connected, they are fixed with the mounting bracket to improve the installation accuracy, avoid the shaking of the first fixed shell and the second fixed shell during the installation process, resulting in low installation accuracy, affecting the rotation of the rotating sleeve and the telescopic adjustment of the spray arm body, facilitating the installation of the first fixed shell and the second fixed shell, and also facilitating the subsequent installation of the first transmission shaft and the second transmission shaft, saving installation time and improving installation efficiency.

[0018] e. Installation of the first transmission shaft and transmission sleeve: insert the third gear into the first fixed shell, then insert the first transmission shaft into the transmission sleeve, and then press the transmission sleeve and the first transmission shaft into the first buckle and the second buckle at the same time, adjust the angle of the rotating sleeve on the telescopic arm, and then insert the spray arm body into the block of the mounting bracket, fix the spray arm body with the fixed block on the block, and then rotate the block so that the spray arm body is directly above the first fixed shell and the second fixed shell, and then press the block downward to press the spray arm body onto the first fixed shell and the second fixed shell, and then insert the second transmission shaft into the first fixed shell, and then connect the second transmission shaft to the output shaft of the motor, check the installation effect between the second transmission shaft and the transmission sleeve, the first transmission shaft and the rotating sleeve, and then fix the first fixed shell and the second fixed shell to the spray arm body with screws, and remove the installed spray arm body from the mounting bracket. By installing the bracket to assist in installation, the installation accuracy of the transmission sleeve, the first transmission shaft and the second transmission shaft can be improved. At the same time, the connection effect of the first fixed shell and the second fixed shell can be improved, so that the extension and retraction of the telescopic arm and the sliding between the first fixed shell and the second fixed shell are smoother and smoother, thereby reducing the occurrence of faults.

[0019] f. Mounting seat calibration: clamp the internal gear on the mounting seat, then fix the mounting seat on the connecting seat, and make the second transmission shaft mesh with the internal gear. Install the spray arm body on the mounting seat, and ensure that the engagement of the second transmission shaft with the internal gear can ensure the transmission between the internal gear and the second transmission shaft.

[0020] g. Overall operation inspection.

[0021] Furthermore, the detailed steps of step g are: fix the mounting base, then connect the water inlet pipe to the mounting base, open the water inlet valve, check the spray effect of the spray arm body, check whether there is any water leakage at the connection of the spray arm body, then connect the third gear and the inner gear to different motor output shafts respectively, turn on the motor connected to the inner gear, check the rotation of the rotating sleeve, and if the rotating sleeve rotates normally, turn on the motor connected to the third gear, check the telescopic arm extension and the water leakage of the rotating sleeve and the telescopic arm when the telescopic arm is extended and retracted. Inspect the assembled spray arm to avoid water leakage in the spray arm, and at the same time, inspect the operating effects of the first transmission shaft, the second transmission shaft, the transmission sleeve, the second gear and the third gear. If there is water leakage or the telescopic arm cannot be extended or the rotating sleeve cannot rotate, it is necessary to dismantle the flushing assembly. Perform quality inspection on the assembled spray arm to prevent unqualified spray arms from leaving the factory.

[0022] The present invention has the following beneficial effects due to the adoption of the above technical solution:

[0023] When the present invention is in use, a motor for controlling the rotation of a rotating sleeve is connected to an internal gear, and the internal gear is driven to rotate by the motor, thereby driving the rotating sleeves on all telescopic arms to rotate, so as to adjust the angle of the spray hole. When the angle of the spray hole needs to be adjusted, it is only necessary to start the motor for controlling the rotation of the rotating sleeve to control the rotation of all the rotating sleeves. The telescopic arm is extended and retracted by connecting the motor for controlling the telescopic arm to the third gear. After the motor for controlling the telescopic arm is turned on, the motor drives the third gear to rotate, and then drives the second gear to rotate, and finally drives the nut to rotate, so as to realize the sliding of the telescopic arm on the connecting arm, that is, to realize the extension and retraction of the telescopic arm. The present invention realizes that the spray angle of the spray hole is adjustable, and can make the spray angle wider, the spray efficiency higher, and the spray effect better.

[0024] The present invention adopts 7 manufacturing steps including a preparation, b assembly of the first transmission shaft and the transmission sleeve, c installation of the spray arm body and the rotating sleeve, d assembly of the fixed shell, e installation of the first transmission shaft and the transmission sleeve, f calibration of the mounting seat, and g overall operation detection to realize the production of the spray arm, optimize the steps, simplify the manufacturing steps, and improve the production efficiency. At the same time, the installation of the spray arm is assisted by the installation bracket, which can improve the connection effect of the components in the spray arm, improve the installation accuracy, and make the spray arm have a longer service life and less prone to failure. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention will be further described below in conjunction with the accompanying drawings:

[0026] Figure 1 It is a structural schematic diagram of a spray arm of a dishwasher of the present invention;

[0027] Figure 2 It is a structural schematic diagram of the telescopic arm extending in the present invention;

[0028] Figure 3 It is a structural schematic diagram of the telescopic arm in the present invention;

[0029] Figure 4 It is an exploded view of the rotating sleeve in the present invention;

[0030] Figure 5 It is a schematic diagram of the structure of the connection between the first fixed shell and the second fixed shell in the present invention;

[0031] Figure 6 It is a schematic diagram of the structure of the internal gear in the present invention;

[0032] Figure 7 It is a schematic diagram of the structure of the mounting bracket in the present invention.

[0033] In the figure, 1- spray arm body; 2- mounting seat; 3- connecting arm; 4- telescopic arm; 5- first cavity; 6- second cavity; 7- connecting seat; 8- annular groove; 9- rotating sleeve; 10- spray hole; 11- spray port; 12- first fixed shell; 13- second fixed shell; 14- transmission sleeve; 15- second transmission shaft; 16- first transmission shaft; 17- first external tooth; 18- first gear; 19- internal gear; 20- screw rod; 21 - nut; 22 - second outer tooth; 23 - second gear; 24 - third gear; 25 - water inlet jacket; 26 - first half ring; 27 - second half ring; 28 - limiting protrusion; 29 - positioning protrusion; 30 - first positioning groove; 31 - clamping groove; 32 - sealing ring; 34 - first positioning block; 35 - second positioning groove; 36 - second positioning block; 37 - first buckle; 38 - second buckle; 39 - first mounting groove; 40 - clamping block. DETAILED DESCRIPTION

[0034] like Figures 1 to 6 As shown, a spray arm of a dishwasher of the present invention comprises a spray arm body 1 and a mounting seat 2. The spray arm body 1 comprises a connecting arm 3 and a telescopic arm 4. The connecting arm 3 is provided with a first cavity 5. The telescopic arm 4 is provided with a second cavity 6. The connecting arm 3 is connected to the telescopic arm 4. The first cavity 5 and the second cavity 6 are communicated. The connecting arm 3 is provided with a connecting seat 7. The connecting seat 7 is arranged on the mounting seat 2. The telescopic arm 4 is provided with an annular groove 8. The annular groove 8 is provided with a rotating sleeve 9. The rotating sleeve 9 is rotatably connected to the telescopic arm 4. The rotating sleeve 9 is provided with a spray hole 10. The spray hole 10 is communicated with the second cavity 6. Through the rotational connection between the rotating sleeve 9 and the telescopic arm 4, the spray angle of the spray hole 10 is adjustable, which can make the spray angle wider, the spray efficiency higher, and the spray effect better.

[0035] The connecting arm 3 is slidably connected to the telescopic arm 4, and the connecting arm 3 is provided with a spray port 11, and the telescopic arm 4 is against the top of the spray port 11. The sliding connection between the connecting arm 3 and the telescopic arm 4 realizes the extension of the spray arm body 1 and the position adjustment of the spray port 11. At the same time, when the telescopic arm 4 is extended, the spray port 11 abutted by the telescopic arm 4 can spray, and the additional spray port 11 during extension can improve the spray effect.

[0036] The connecting arm 3 is provided with a first fixed shell 12, and the telescopic arm 4 is provided with a second fixed shell 13. The first fixed shell 12 is slidably connected with the second fixed shell 13. The first fixed shell 12 is rotatably connected with a transmission sleeve 14 and a second transmission shaft 15. The second transmission shaft 15 is meshed with the transmission sleeve 14. The second fixed shell 13 is rotatably connected with a first transmission shaft 16. The first transmission shaft 16 is arranged in the transmission sleeve 14. The first transmission shaft 16 is slidably connected with the transmission sleeve 14. The rotating sleeve 9 is provided with a first external tooth 17. The first transmission shaft 16 is provided with a first gear 18. The first gear 18 is meshed with the first external tooth 17. The mounting seat 2 is provided with an internal gear 19. The internal gear 19 is rotatably connected with the mounting seat 2, and the internal gear 19 is meshed with the second transmission shaft 15. The transmission form of the first transmission shaft 16, the second transmission shaft 15 and the transmission sleeve 14 is adopted to realize the control of the rotation angle of the rotating sleeve 9. At the same time, the connection mode of the transmission sleeve 14 and the first transmission shaft 16 can adapt to the extension and retraction of the telescopic arm 4, that is, when the telescopic arm 4 is extended and retracted, the first transmission shaft 16, the second transmission shaft 15 and the transmission sleeve 14 can also be used to accurately adjust the angle of the rotating sleeve 9 to realize the precise adjustment of the spray hole 10.

[0037] The telescopic arm 4 is provided with a screw rod 20, the screw rod 20 is provided with a nut 21, the nut 21 is provided with a second outer tooth 22, the transmission sleeve 14 is provided with a second gear 23, the second gear 23 is rotatably connected to the transmission sleeve 14, and the second gear 23 is meshed with the second outer tooth 22, and the first fixed shell 12 is provided with a third gear 24, the third gear 24 is rotatably connected to the first fixed shell 12, and the third gear 24 is meshed with the second gear 23. Through the cooperation of the screw rod 20, the nut 21, the second gear 23 and the third gear 24, the telescopic transmission of the telescopic arm 4 is realized. After the third gear 24 is connected to the output shaft of the motor, the telescopic control of the telescopic arm 4 can be realized, so that the telescopic arm 4 can adjust the telescopic amount according to the amount of dishes, thereby realizing intelligent cleaning, improving the cleaning effect and saving water. The setting method of the second gear 23 makes the structure of the nut 21, the screw rod 20, the second gear 23 and the third gear 24 compact, and effectively uses the space between the transmission sleeve 14 and the connecting arm 3, occupies a small space, and has a good transmission effect.

[0038] The mounting seat 2 is provided with a water inlet sleeve 25, which is connected to the connecting seat 7. The mounting seat 2 is arranged on the inner tank of the dishwasher to fix the spray arm body 1 on the dishwasher. The spray arm body 1 can be disassembled separately through the mounting seat 2. When disassembly is required, the spray arm body 1 only needs to be removed from the mounting seat 2.

[0039] The rotating sleeve 9 includes a first half ring 26 and a second half ring 27. The spray hole 10 is arranged on the first half ring 26. The inner side surfaces of the first half ring 26 and the second half ring 27 are both provided with a limiting protrusion 28. The first half ring 26 is provided with a positioning protrusion 29. The second half ring 27 is provided with a first positioning groove 30. The positioning protrusion 29 is arranged in the first positioning groove 30. The first half ring 26 and the second half ring 27 are both provided with a clamping groove 31. The clamping groove 31 is provided with a sealing ring 32. The rotating sleeve 9 adopts the connection mode of the first half ring 26 and the second half ring 27, which can not only facilitate the production and processing of the rotating sleeve 9, but also facilitate the production of the half ring compared with the complete ring, and the yield rate is higher. It is more convenient to process the clamping groove 31 in the half ring, and it can also be convenient for installation. The first half ring 26 and the second half ring 27 can be fixed by clamping. The limiting protrusion 28 can limit the rotation angle of the rotating sleeve 9 to prevent the spray hole 10 from being blocked by too large a rotation angle. The cooperation between the clamping groove 31 and the sealing ring 32 improves the sealing performance and reduces the occurrence of water leakage between the rotating sleeve 9 and the telescopic arm 4. The positioning protrusion 29 and the first positioning groove 30 achieve a positioning effect, which facilitates the clamping and installation of the first half ring 26 and the second half ring 27.

[0040] The first fixed shell 12 is provided with a first positioning block 34, the first positioning block 34 is provided in the telescopic arm 4, the telescopic arm 4 is provided with a second positioning groove 35, and the second fixed shell 13 is provided with a second positioning block 36, and the second positioning block 36 is provided in the second positioning groove 35. The first positioning groove 30, the first positioning block 34, the second positioning groove 35, and the second positioning block 36 facilitate the connection and positioning of the connecting arm 3 and the first fixed shell 12, and the connection and positioning of the telescopic arm 4 and the second fixed shell 13, so that the alignment of the first gear 18 and the external teeth is more convenient, and the alignment of the nut 21 and the second gear 23 is more convenient.

[0041] The first fixed shell 12 is provided with a first buckle 37, which clamps the transmission sleeve 14, and the second fixed shell 13 is provided with a second buckle 38, which clamps the first transmission shaft 16. The buckle form facilitates the positioning and installation of the transmission shaft and the transmission sleeve 14.

[0042] like Figure 7 As shown, a method for manufacturing a spray arm of a dishwasher comprises the following steps:

[0043] a. Preparation: Check all parts, add any missing parts, and then check the mounting bracket to ensure that it can be used normally. Preparatory work before manufacturing can avoid missing parts and unusable mounting brackets, which can improve manufacturing efficiency.

[0044] b. Assembly of the first transmission shaft 16 and the transmission sleeve 14: insert the first gear 18 into the first transmission shaft 16, then adjust the spacing of the first gear 18 according to the spacing between the first external teeth 17, then insert the second gear 23 into the transmission sleeve 14, and adjust the position of the second gear 23 on the transmission sleeve 14. The assembly of the transmission shaft and the transmission sleeve 14 ensures the convenience of the subsequent installation of the first transmission shaft 16 and the transmission sleeve 14, which can save time and improve efficiency.

[0045] c. Installation of the spray arm body 1 and the rotating sleeve 9: Clamp the telescopic arm 4 onto the connecting arm 3, then insert two sealing rings 32 into each annular groove 8, then clamp the spray hole 10 onto the first half ring 26, then align the clamping groove 31 of the first half ring 26 and the second half ring 27 with the sealing ring 32, buckle the first half ring 26 and the second half ring 27, screw on the fixing screws, then put the nut 21 on the screw rod 20, and fix the screw rod 20 on the connecting arm 3. Install the telescopic arm 4 on the connecting arm 3, install the rotating sleeve 9 on the telescopic arm 4, and then align and buckle the first half ring 26 and the second half ring 27, so that the sealing ring 32 can be accurately clamped in the clamping groove 31, improve the connection effect of the first half ring 26 and the second half ring 27, and then fix the screw rod 20 and the nut 21 to facilitate the subsequent installation of the second gear 23 and the third gear 24.

[0046] d. Assembly of the fixed shell: insert the second fixed shell 13 into the first fixed shell 12, and then insert the first fixed shell 12 and the second fixed shell 13 into the first mounting groove of the mounting bracket, and fix the first fixed shell 12 and the second fixed shell 13. After the first fixed shell 12 and the second fixed shell 13 are connected, they are fixed with the mounting bracket, which can improve the installation accuracy, avoid the shaking of the first fixed shell 12 and the second fixed shell 13 during the installation process, resulting in low installation accuracy, affecting the rotation of the rotating sleeve 9 and the telescopic adjustment of the spray arm body 1, facilitating the installation of the first fixed shell 12 and the second fixed shell 13, and also facilitating the subsequent installation of the first transmission shaft 16 and the second transmission shaft 15, saving installation time and improving installation efficiency.

[0047] e. Installation of the first transmission shaft 16 and the transmission sleeve 14: Insert the third gear 24 into the first fixed shell 12, then insert the first transmission shaft 16 into the transmission sleeve 14, then press the transmission sleeve 14 and the first transmission shaft 16 into the first buckle 37 and the second buckle 38 at the same time, adjust the angle of the rotating sleeve 9 on the telescopic arm 4, then insert the spray arm body 1 into the clamping block of the mounting bracket, fix the spray arm body 1 with the fixing block on the clamping block, and then rotate the clamping block so that the spray arm body 1 is between the first fixed shell 12 and the second fixed shell 13, then press the clamping block downwards, press the spray arm body 1 against the first fixed shell 12 and the second fixed shell 13, then clamp the second transmission shaft 15 on the first fixed shell 12, and then connect the second transmission shaft 15 to the output shaft of the motor, check the installation effect between the second transmission shaft 15 and the transmission sleeve 14, the first transmission shaft 16, and the rotating sleeve 9, and then fix the first fixed shell 12 and the second fixed shell 13 on the spray arm body 1 with screws, and remove the installed spray arm body 1 from the mounting bracket. The auxiliary installation through the mounting bracket can improve the installation accuracy of the transmission sleeve 14, the first transmission shaft 16 and the second transmission shaft 15, and at the same time improve the connection effect of the first fixed shell 12 and the second fixed shell 13, so that the telescopic arm 4 and the sliding between the first fixed shell 12 and the second fixed shell 13 are smoother and smoother, reducing the occurrence of faults.

[0048] f. Calibrate the mounting base 2: snap the internal gear 19 onto the mounting base 2, then fix the mounting base 2 onto the connecting base 7, and make the second transmission shaft 15 mesh with the internal gear 19. Install the spray arm body 1 onto the mounting base 2, and ensure that the engagement of the second transmission shaft 15 with the internal gear 19 can ensure the transmission between the internal gear 19 and the second transmission shaft 15.

[0049] g. Overall operation inspection.

[0050] The detailed steps of step g are as follows: fix the mounting base 2, then connect the water inlet pipe to the mounting base 2, open the water inlet valve, check the spray effect of the spray arm body 1, check whether there is water leakage at the connection of the spray arm body 1, then connect the third gear 24 and the inner gear 19 to different motor output shafts respectively, turn on the motor connected to the inner gear 19, check the rotation of the rotating sleeve 9, if the rotating sleeve 9 rotates normally, turn on the motor connected to the third gear 24, check the telescopic arm 4 extension and contraction and the water leakage of the rotating sleeve 9 and the telescopic arm 4 when the telescopic arm 4 is extended and contracted. The assembled spray arm is tested to avoid water leakage in the spray arm, and the operating effects of the first transmission shaft 16, the second transmission shaft 15, the transmission sleeve 14, the second gear 23 and the third gear 24 can be tested at the same time. If there is water leakage or the telescopic arm 4 cannot be extended and the rotating sleeve 9 cannot be rotated, it is necessary to dismantle the flushing assembly. The assembled spray arm is quality tested to avoid unqualified spray arms from leaving the factory.

[0051] When the present invention is in use, a motor for controlling the rotation of the rotating sleeve 9 is connected to the internal gear 19, and the internal gear 19 is driven to rotate by the motor, thereby driving the rotating sleeves 9 on all telescopic arms 4 to rotate, so as to adjust the angle of the spray hole 10. If the angle of the spray hole 10 needs to be adjusted, it is only necessary to start the motor for controlling the rotation of the rotating sleeve 9 to control the rotation of all the rotating sleeves 9. The telescopic arm 4 is extended and retracted by connecting the motor for controlling the telescopic arm 4 to the third gear 24. After the motor for controlling the telescopic arm 4 is turned on, the motor drives the third gear 24 to rotate, and then drives the second gear 23 to rotate, and finally drives the nut 21 to rotate, so as to realize the sliding of the telescopic arm 4 on the connecting arm 3, that is, to realize the extension and retraction of the telescopic arm 4. The present invention realizes that the spray angle of the spray hole 10 is adjustable, which can make the spray angle wider, the spray efficiency higher, and the spray effect better.

[0052] The present invention adopts 7 manufacturing steps including a preparation, b assembly of the first transmission shaft 16 and the transmission sleeve 14, c installation of the spray arm body 1 and the rotating sleeve 9, d assembly of the fixed shell, e installation of the first transmission shaft 16 and the transmission sleeve 14, f calibration of the mounting seat 2, and g overall operation detection to realize the production of the spray arm, optimize the steps, simplify the manufacturing steps, and improve the production efficiency. At the same time, the installation of the spray arm is assisted by the installation bracket, which can improve the connection effect of the components in the spray arm, improve the installation accuracy, and make the spray arm have a longer service life and less prone to failure.

[0053] The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent replacements or modifications made based on the present invention to solve basically the same technical problems and achieve basically the same technical effects are all included in the protection scope of the present invention.

Claims

1. A spray arm of a dishwasher, comprising a spray arm body and a mounting seat, characterized in that: The spray arm body comprises a connecting arm and a telescopic arm, the connecting arm is provided with a first cavity, the telescopic arm is provided with a second cavity, the connecting arm is connected to the telescopic arm, the first cavity and the second cavity are communicated, the connecting arm is provided with a connecting seat, the connecting seat is arranged on the mounting seat, the telescopic arm is provided with an annular groove, the annular groove is provided with a rotating sleeve, the rotating sleeve is rotatably connected with the telescopic arm, the rotating sleeve is provided with a spray hole, the spray hole is communicated with the second cavity, the connecting arm is slidably connected with the telescopic arm, the connecting arm is provided with a spray port, the telescopic arm is against the top of the spray port, the connecting arm is provided with a first fixed shell, the telescopic arm is provided with a second fixed shell, the first fixed shell is slidably connected with the second fixed shell, the first fixed shell is rotatably connected with a transmission sleeve and a second transmission shaft, the second transmission shaft is meshed with the transmission sleeve, the second fixed shell is rotatably connected with the first transmission shaft, the first transmission shaft is arranged in the transmission sleeve, the first transmission shaft is slidably connected with the transmission sleeve, the rotating sleeve is provided with a first external tooth, the first transmission shaft is provided with a first gear, the first gear is meshed with the transmission sleeve The first external teeth are meshed, the mounting seat is provided with an internal gear, the internal gear is rotatably connected with the mounting seat, the internal gear is meshed with the second transmission shaft, the telescopic arm is provided with a screw rod, the screw rod is provided with a nut, the nut is provided with a second external tooth, the transmission sleeve is provided with a second gear, the second gear is rotatably connected with the transmission sleeve, the second gear is meshed with the second external teeth, the first fixed shell is provided with a third gear, the third gear is rotatably connected with the first fixed shell, the third gear is meshed with the second gear, the rotating sleeve includes a first half ring and a second half ring, the spray hole is provided on the first half ring, the inner side surfaces of the first half ring and the second half ring are both provided with a limiting protrusion, the first half ring is provided with a positioning protrusion, the second half ring is provided with a first positioning groove, the positioning protrusion is provided in the first positioning groove, the first half ring and the second half ring are both provided with a clamping groove, a sealing ring is provided in the clamping groove, the first fixed shell is provided with a first buckle, the first buckle clamps the transmission sleeve, the second fixed shell is provided with a second buckle, and the second buckle clamps the first transmission shaft.

2. A spray arm for a dishwasher according to claim 1, characterized in that: A water inlet sleeve is arranged in the mounting seat, and the water inlet sleeve is connected to the connecting seat.

3. The spray arm of a dishwasher according to claim 1, characterized in that: The first fixed shell is provided with a first positioning block, the first positioning block is provided in the connecting arm, the telescopic arm is provided with a second positioning groove, the second fixed shell is provided with a second positioning block, and the second positioning block is provided in the second positioning groove.

4. A method for manufacturing a spray arm of a dishwasher according to claim 1, characterized in that The steps include: a. Preparation: Check all components, add any missing components, and then check the mounting bracket to ensure that it can be used normally; b. Assembling the first transmission shaft and the transmission sleeve: insert the first gear into the first transmission shaft, then adjust the spacing of the first gear according to the spacing between the first external teeth, then insert the second gear into the transmission sleeve, and adjust the position of the second gear on the transmission sleeve; c. Installation of the spray arm body and the rotating sleeve: clamp the telescopic arm on the connecting arm, then insert two sealing rings into each annular groove, clamp the spray hole on the first half ring, then align the slots of the first half ring and the second half ring with the sealing ring, buckle the first half ring and the second half ring, tighten the fixing screws, and then put the nut on the screw rod to fix the screw rod on the connecting arm; d. Assembling the fixing shell: insert the second fixing shell into the first fixing shell, insert the first fixing shell and the second fixing shell into the first mounting groove of the mounting bracket, and fix the first fixing shell and the second fixing shell; e. Installation of the first transmission shaft and transmission sleeve: insert the third gear into the first fixed shell, then insert the first transmission shaft into the transmission sleeve, and then press the transmission sleeve and the first transmission shaft into the first buckle and the second buckle at the same time, adjust the angle of the rotating sleeve on the telescopic arm, and then insert the spray arm body into the block of the mounting bracket, fix the spray arm body with the fixing block on the block, and then rotate the block so that the spray arm body is directly above the first fixed shell and the second fixed shell, and then press the block downward to press the spray arm body onto the first fixed shell and the second fixed shell, and then insert the second transmission shaft into the first fixed shell, and then connect the second transmission shaft to the output shaft of the motor, check the installation effect between the second transmission shaft and the transmission sleeve, the first transmission shaft and the rotating sleeve, and then fix the first fixed shell and the second fixed shell to the spray arm body with screws, and remove the installed spray arm body from the mounting bracket; f. Mounting seat calibration: clamp the internal gear on the mounting seat, then fix the mounting seat on the connecting seat, and make the second transmission shaft mesh with the internal gear; g. Overall operation inspection.

5. The method for manufacturing a spray arm of a dishwasher according to claim 4, characterized in that: The detailed steps of step g are: fix the mounting base, then connect the water inlet pipe to the mounting base, open the water inlet valve, check the spray effect of the spray arm body, check whether there is any water leakage at the connection of the spray arm body, and then connect the third gear and the internal gear to different motor output shafts respectively, turn on the motor connected to the internal gear, check the rotation of the rotating sleeve, if the rotating sleeve rotates normally, turn on the motor connected to the third gear, check the extension and retraction of the telescopic arm and the water leakage of the rotating sleeve and the telescopic arm when the telescopic arm is extended and retracted.

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