阅读说明：本技术 一种洗碗机的喷淋臂及其制造方法 (Spraying arm of dish washing machine and manufacturing method thereof ) 是由 钱松良 宋烨锋 于 2019-10-30 设计创作，主要内容包括：本发明公开了一种洗碗机的喷淋臂及其制造方法,包括喷淋臂本体和安装座,喷淋臂本体包括连接臂和伸缩臂,连接臂设有第一空腔,伸缩臂设有第二空腔,连接臂与伸缩臂相连接,第一空腔和第二空腔相连通,连接臂设有连接座,连接座设于安装座上,伸缩臂开设有环形槽,环形槽设有转套,转套与伸缩臂转动连接,转套设有喷淋孔,喷淋孔与第二空腔相连通；方法采用a准备,b第一传动轴和传动套的装配,c喷淋臂本体和转套安装,d固定壳装配,e第一传动轴和传动套的安装,f安装座校准,g整体运行检测。本发明实现了喷淋孔的喷淋角度可调节,能够使得喷淋角度更广,喷淋效率更高,喷淋效果更好；对步骤进行优化,简化了制造步骤,提高了生产效率。(The invention discloses a spray arm of a dish washing machine and a manufacturing method thereof, and the spray arm comprises a spray arm body and a mounting seat, wherein 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 with the telescopic arm, the first cavity is communicated with the second cavity, 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, and the spray hole is communicated with; the method comprises the steps of preparing a, assembling a first transmission shaft and a transmission sleeve b, installing a spray arm body and a rotating sleeve c, assembling a fixed shell d, installing the first transmission shaft and the transmission sleeve e, calibrating an installation base f, and detecting the integral operation g. The adjustable spraying hole realizes that the spraying angle of the spraying hole can be adjusted, so that the spraying angle is wider, the spraying efficiency is higher, and the spraying effect is better; the steps are optimized, the manufacturing steps are simplified, and the production efficiency is improved.)

1. The utility model provides a spray arm of dish washer, includes spray arm body and mount pad, its characterized in that: the spray arm comprises a spray arm body and is 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 with the telescopic arm, the first cavity is communicated with the second cavity, the connecting arm is provided with a connecting seat, the connecting seat is arranged on the mounting seat, an annular groove is formed in the telescopic arm, the annular groove is provided with a rotating sleeve, the rotating sleeve is connected with the telescopic arm in a rotating mode, a spray hole is formed in the rotating sleeve, and the spray hole is communicated with the second cavity.

2. The spray arm of a dishwasher of claim 1, wherein: the connecting arm is connected with the telescopic arm in a sliding mode, the connecting arm is provided with a spraying opening, and the telescopic arm abuts against the upper portion of the spraying opening.

3. The spray arm of a dishwasher of claim 2, wherein: the linking arm is equipped with first set casing, flexible arm is equipped with the second set casing, first set casing with second set casing sliding connection, first set casing rotates and is connected with transmission cover and second transmission shaft, and second transmission shaft and transmission cover mesh mutually, the second set casing rotates and is connected with first transmission shaft, first transmission shaft is located in the transmission cover, first transmission shaft with transmission cover sliding connection, the commentaries on classics cover is equipped with first external tooth, first transmission shaft is equipped with first gear, first gear with first external tooth meshes mutually, the mount pad is equipped with the internal gear, the internal gear with the mount pad rotates and connects, the internal gear with second transmission shaft meshes mutually.

4. The spray arm of a dishwasher of claim 3, wherein: the telescopic boom is provided with a screw rod, the screw rod is provided with a nut, the nut is provided with second external teeth, the transmission sleeve is provided with a second gear, the second gear is connected with the transmission sleeve in a rotating mode, the second gear is meshed with the second external teeth, the first fixed shell is provided with a third gear, the third gear is connected with the first fixed shell in a rotating mode, and the third gear is meshed with the second gear.

5. The spray arm of a dishwasher of claim 1, wherein: a water inlet sleeve is arranged in the mounting seat and connected with the connecting seat.

6. The spray arm of a dishwasher of claim 1, wherein: the rotating sleeve comprises a first half ring and a second half ring, the spraying hole is formed in the first half ring, the inner side face of the first half ring and the inner side face of the second half ring are provided with limiting protrusions, the first half ring is provided with positioning protrusions, the second half ring is provided with a first positioning groove, the positioning protrusions are arranged in the first positioning groove, the first half ring and the second half ring are provided with clamping grooves, and sealing rings are arranged in the clamping grooves.

7. The spray arm of a dishwasher of claim 3, wherein: the first fixing shell is provided with a first positioning block, the first positioning block is arranged in the connecting arm, the telescopic arm is provided with a second positioning groove, the second fixing shell is provided with a second positioning block, and the second positioning block is arranged in the second positioning groove.

8. The spray arm of a dishwasher of claim 1, wherein: the first fixing shell is provided with a first buckle, the first buckle is clamped on the transmission sleeve, the second fixing shell is provided with a second buckle, and the second buckle is clamped on the first transmission shaft.

9. The method for manufacturing a spray arm of a dishwasher according to claim 1, comprising the steps of:

a. preparing: each component is checked, the missing components are supplemented, and then the mounting bracket is checked to ensure that the mounting bracket can be normally used;

b. assembling a first transmission shaft and a transmission sleeve: the first gear is clamped into the first transmission shaft, then the distance between the first gears is adjusted according to the distance between the first outer teeth, the second gear is sleeved on the transmission sleeve, and the position of the second gear on the transmission sleeve is adjusted;

c. the spray arm body and the rotating sleeve are installed: clamping a telescopic arm on a connecting arm, then sleeving two sealing rings on each annular groove, clamping a spraying hole on a first half ring, aligning clamping grooves of the first half ring and a second half ring with the sealing rings, buckling the first half ring and the second half ring, screwing a fixing screw, sleeving a nut on a screw rod, and fixing the screw rod on the connecting arm;

d. assembling a fixed shell: the second fixing shell is clamped into the first fixing shell, the first fixing shell and the second fixing shell are clamped into the first mounting groove of the mounting bracket, and the first fixing shell and the second fixing shell are fixed well;

e. installation of the first transmission shaft and the transmission sleeve: clamping the third gear into the first fixing shell, then sleeving the first transmission shaft into the transmission sleeve, then simultaneously pressing the transmission sleeve and the first transmission shaft into the first buckle and the second buckle, adjusting the angle of the rotating sleeve on the telescopic arm, then clamping the spray arm body onto a clamping block of the mounting bracket, fixing the spray arm body by using the fixing block on the clamping block, then rotating the clamping block to enable the spray arm body to be positioned right above the first fixing shell and the second fixing shell, then downwards pressing the clamping block to enable the spray arm body to be pressed onto the first fixing shell and the second fixing shell, then clamping the second transmission shaft onto the first fixing shell, then connecting the second transmission shaft onto an output shaft of the motor, checking the mounting effect between the second transmission shaft and the transmission sleeve, the first transmission shaft and the rotating sleeve, and then fixing the first fixing shell and the second fixing shell onto the spray arm body by using screws, taking down the mounted spray arm body from the mounting bracket;

f. and (3) calibrating a mounting seat: clamping the inner gear on the mounting seat, fixing the mounting seat on the connecting seat, and meshing the second transmission shaft with the inner gear;

g. and (5) overall operation detection.

10. The method of manufacturing a spray arm of a dishwasher of claim 9, wherein: the detailed steps of step g are: the fixed mounting seat, later with advance water piping connection to mount pad, open the water intaking valve, look over the effect that sprays of spray arm body, the inspection sprays the condition whether this body junction of arm has the condition of leaking, later be connected to different motor output shafts respectively with third gear and internal gear, open the motor of connecting the internal gear after, look over the rotation condition of changeing the cover, change the cover and rotate the normal motor that then opens third gear connection, look over the flexible condition of flexible arm and change the cover and the condition of leaking of flexible arm when flexible arm is flexible.

Technical Field

The invention belongs to the technical field of dish washing machines, and particularly relates to a spray arm of a dish washing machine and a manufacturing method thereof.

Background

The dish washer is a household full-automatic dish washer for automatically cleaning tableware such as dishes, chopsticks, dishes, knives and forks, is only suitable for families and mainly comprises a cabinet type, a table type and a water tank integrated type. The dish washer is used for washing tableware, so that the complicated manual labor can be greatly reduced. Only the tableware to be washed is put into the dish washer, the water tap and the button are turned on, and other things can be done as far as possible, and the operation can be automatically finished because no person is waiting in the washing process. The angle of the spraying holes of the existing dish washer can not be adjusted, and the spraying holes are fixed, so that bowls and dishes are difficult to spray in some places, and the spraying effect is poor. Meanwhile, the existing spray arm is complex in manufacturing process and low in manufacturing precision and needs to be further optimized.

Disclosure of Invention

The invention aims to solve the technical problems in the prior art, and provides a spray arm of a dish-washing machine and a manufacturing method thereof, which can adjust the angle of a spray hole, improve the spray effect, facilitate the manufacture of the spray arm, have high manufacturing precision, save the manufacturing time and improve the manufacturing efficiency.

In order to solve the technical problems, the invention adopts the following technical scheme:

the utility model provides a spray arm of dish washer, includes spray arm body and mount pad, its 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 with the telescopic arm, the first cavity is communicated with the second cavity, the connecting arm is provided with a connecting seat, the connecting seat is arranged on a mounting seat, the telescopic arm is provided with a ring groove, the ring groove is provided with a rotary sleeve, the rotary sleeve is connected with the telescopic arm in a rotating mode, the rotary sleeve is provided with a spray hole, and the spray hole is communicated with the second cavity. The rotary sleeve is connected with the telescopic arm in a rotating mode, the spraying angle of the spraying hole can be adjusted, the spraying angle can be wider, the spraying efficiency is higher, and the spraying effect is better.

Furthermore, the connecting arm is connected with the telescopic arm in a sliding mode, the connecting arm is provided with a spraying opening, and the telescopic arm is abutted to the upper portion of the spraying opening. Linking arm and telescopic boom's sliding connection realizes the extension of spraying the arm body, sprays the position adjustment of mouth, simultaneously, when telescopic boom extends, the mouth that sprays that is supported by telescopic boom can spray, and the mouth that sprays that additionally increases during the extension can improve and spray the effect.

Further, the linking arm is equipped with first set casing, flexible arm is equipped with the second set casing, first set casing and second set casing sliding connection, first set casing rotates and is connected with transmission cover and second transmission shaft, second transmission shaft and transmission cover mesh mutually, the second set casing rotates and is connected with first transmission shaft, first transmission shaft is located in the transmission cover, first transmission shaft and transmission cover sliding connection, the cover is equipped with first external tooth to changeing, first transmission shaft is equipped with first gear, first gear meshes with first external tooth mutually, the mount pad is equipped with the internal gear, the internal gear rotates with the mount pad to be connected, the internal gear meshes with the second transmission shaft mutually. Adopt the transmission form of first transmission shaft, secondary drive axle and transmission cover, realize changeing the control of cover turned angle, the connected mode of transmission cover and first transmission shaft simultaneously can adapt to the flexible of flexible arm, also can utilize the angle of the accurate regulation commentaries on classics cover of first transmission shaft, secondary drive axle and transmission cover promptly when flexible arm extends and contracts, realizes spraying the accurate regulation in hole.

Furthermore, the telescopic arm is provided with a screw rod, the screw rod is provided with a nut, the nut is provided with second external teeth, the transmission sleeve is provided with a second gear, the second gear is rotatably connected with the transmission sleeve and meshed with the second external teeth, the first fixing shell is provided with a third gear, the third gear is rotatably connected with the first fixing shell, and the third gear is meshed with the second gear. Through the cooperation of lead screw, nut, second gear and third gear, realized the flexible transmission of flexible arm, with third gear connection to motor output shaft back, can realize the flexible control to flexible arm for flexible arm can adjust flexible volume according to the volume of bowl dish, thereby realizes intelligent washing, improves the quantity of the water conservation simultaneously of cleaning performance. The arrangement mode of the second gear enables the structure of the nut, the screw rod, the second gear and the third gear to be compact, the space between the transmission sleeve and the connecting arm is used effectively, the occupied space is small, and the transmission effect is good.

Furthermore, a water inlet sleeve is arranged in the mounting seat and is connected with the connecting seat. The mounting seat is arranged on the inner container of the dish washing machine, the fixing of the spray arm body on the dish washing machine is realized, the independent disassembly of the spray arm body can be realized through the mounting seat, and the spray arm body only needs to be disassembled from the mounting seat when the disassembly is needed.

Further, the rotating sleeve comprises a first half ring and a second half ring, the spraying hole is formed in the first half ring, limiting protrusions are arranged on the inner side faces of the first half ring and the second half ring, the first half ring is provided with positioning protrusions, the second half ring is provided with a first positioning groove, the positioning protrusions are arranged in the first positioning groove, the first half ring and the second half ring are provided with clamping grooves, and sealing rings are arranged in the clamping grooves. The rotating sleeve adopts the connection mode of the first half ring and the second half ring, the production and the processing of the rotating sleeve can be conveniently realized, the half rings are more convenient to produce compared with complete rings, the yield is higher, the processing clamping grooves in the half rings are more convenient, the installation can be facilitated, and the first half ring and the second half ring are fixed in a clamping mode. The limiting protruding part can limit the rotation angle of the rotating sleeve, and the spray hole is prevented from being blocked due to the fact that the rotation angle is too large. The cooperation of draw-in groove and sealing washer has improved the leakproofness, reduces the emergence of the condition of leaking between commentaries on classics cover and the flexible arm. The positioning effect is realized by the positioning convex part and the first positioning groove, and the first half ring and the second half ring are conveniently clamped and installed.

Furthermore, the first fixed shell is provided with a first positioning block, the first positioning block is arranged 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 arranged in the second positioning groove. First constant head tank, first locating piece and second constant head tank, second locating piece have made things convenient for the connection location of linking arm and first set casing, the connection location of flexible arm and second set casing for the counterpoint of first gear and external tooth is more convenient, and the counterpoint of nut and second gear is more convenient.

Further, first set casing is equipped with first buckle, first buckle chucking transmission sleeve, and the second set casing is equipped with the second buckle, the first transmission shaft of second buckle chucking. The transmission shaft and the transmission sleeve are convenient to position and mount in a buckling mode.

A method of manufacturing a spray arm of a dishwasher, comprising the steps of:

a. preparing: each part is checked, the missing parts are supplemented, and the mounting bracket is checked to ensure that the mounting bracket can be normally used. The preparation work before manufacturing can avoid the loss of parts and the unavailable use of the mounting bracket, and can improve the manufacturing efficiency.

b. Assembling a first transmission shaft and a transmission sleeve: and clamping the first gear into the first transmission shaft, then adjusting the distance of the first gear according to the distance between the first external teeth, sleeving the second gear on the transmission sleeve, and adjusting the position of the second gear on the transmission sleeve. The assembly of transmission shaft and transmission sleeve ensures that the installation of the first transmission shaft and transmission sleeve is convenient, the time can be saved, and the efficiency is improved.

c. The spray arm body and the rotating sleeve are installed: the telescopic arm is clamped on the connecting arm, then two sealing rings are sleeved in each annular groove, then the spraying hole is clamped on the first half ring, then the clamping grooves of the first half ring and the second half ring are aligned to the sealing rings, the first half ring and the second half ring are buckled, the fixing screws are screwed, the screw rod is sleeved with the nut, and the screw rod is fixed on the connecting arm. The telescopic arm is installed on the connecting arm, the rotating sleeve is installed on the telescopic arm, the first half ring and the second half ring can be accurately clamped in the clamping groove through the aligning and buckling of the first half ring and the second half ring, the connecting effect of the first half ring and the second half ring is improved, and then the screw rod and the nut are fixed, so that the subsequent installation of the second gear and the third gear is facilitated.

d. Assembling a fixed shell: the second fixing shell is clamped into the first fixing shell, the first fixing shell and the second fixing shell are clamped into the first mounting groove of the mounting support, and the first fixing shell and the second fixing shell are fixed well. After first set casing and second set casing are connected and are accomplished, recycle the installing support and fix, can improve the installation accuracy, the rocking of first set casing and second set casing in avoiding the installation process leads to the installation accuracy low, the rotation of the cover is changeed in the influence and the flexible regulation of spray arm body, made things convenient for the installation of first set casing and second set casing, also made things convenient for the installation of follow-up first transmission shaft and second transmission shaft simultaneously, practiced thrift installation time, improved the installation effectiveness.

e. Installation of the first transmission shaft and the transmission sleeve: clamping the third gear into the first fixing shell, then sleeving the first transmission shaft into the transmission sleeve, then simultaneously pressing the transmission sleeve and the first transmission shaft into the first buckle and the second buckle, adjusting the angle of the rotating sleeve on the telescopic arm, then clamping the spray arm body onto a clamping block of the mounting bracket, fixing the spray arm body by using the fixing block on the clamping block, then rotating the clamping block to enable the spray arm body to be positioned right above the first fixing shell and the second fixing shell, then downwards pressing the clamping block to enable the spray arm body to be pressed onto the first fixing shell and the second fixing shell, then clamping the second transmission shaft onto the first fixing shell, then connecting the second transmission shaft onto an output shaft of the motor, checking the mounting effect between the second transmission shaft and the transmission sleeve, the first transmission shaft and the rotating sleeve, and then fixing the first fixing shell and the second fixing shell onto the spray arm body by using screws, and taking down the mounted spray arm body from the mounting bracket. Through the installation of installing support assistance, can improve the installation accuracy of transmission sleeve, first transmission shaft and second transmission shaft, can improve the connection effect of first set casing and second set casing simultaneously, make the flexible, the slip between first set casing and the second set casing of flexible arm smooth and easy more, reduce the emergence of trouble.

f. And (3) calibrating a mounting seat: the inner gear is clamped on the mounting seat, then the mounting seat is fixed on the connecting seat, and the second transmission shaft is meshed with the inner gear. The spray arm body is installed on the installation seat, and the clamping of the second transmission shaft and the internal gear is guaranteed so that transmission between the internal gear and the second transmission shaft can be guaranteed.

g. And (5) overall operation detection.

Further, the detailed steps of step g are: the fixed mounting seat, later with advance water piping connection to mount pad, open the water intaking valve, look over the effect that sprays of spray arm body, the inspection sprays the condition whether this body junction of arm has the condition of leaking, later be connected to different motor output shafts respectively with third gear and internal gear, open the motor of connecting the internal gear after, look over the rotation condition of changeing the cover, change the cover and rotate the normal motor that then opens third gear connection, look over the flexible condition of flexible arm and change the cover and the condition of leaking of flexible arm when flexible arm is flexible. The spray arm that the equipment was accomplished detects, avoids the condition that the spray arm appears leaking, can detect the operation effect of first transmission shaft secondary drive axle, transmission sleeve and second gear and third gear simultaneously, if leak or flexible arm can't stretch out and draw back, change the unable rotation of cover, then need demolish and wash the equipment. And the quality of the assembled spray arm is detected, so that unqualified spray arms are prevented from leaving the factory.

Due to the adoption of the technical scheme, the invention has the following beneficial effects:

when the telescopic arm telescopic device is used, a motor for controlling the rotation of the rotary sleeve is connected with the inner gear, the inner gear is driven to rotate through the motor, so that the rotary sleeves on all the telescopic arms are driven to rotate, the adjustment of the angle of the spray holes is realized, the rotation of all the rotary sleeves can be controlled only by starting the motor for controlling the rotation of the rotary sleeves when the angle of the spray holes needs to be adjusted, the telescopic arms are stretched and retracted by connecting the motor for controlling the telescopic arms with the third gear, and after the motor for controlling the telescopic arms is started, the motor drives the third gear to rotate, so that the second gear is driven to rotate, and finally the nuts are driven to rotate, so that the sliding of the telescopic arms on the connecting arms is realized, and the. The invention realizes the adjustable spraying angle of the spraying holes, and can ensure wider spraying angle, higher spraying efficiency and better spraying effect.

The method comprises the steps of preparing a, assembling a first transmission shaft and a transmission sleeve b, installing a spray arm body and a rotating sleeve c, assembling a fixed shell d, installing the first transmission shaft and the transmission sleeve e, calibrating an installation seat f, detecting the integral operation g, and realizing the production and the manufacture of the spray arm through 7 manufacturing steps.

Drawings

The invention will be further described with reference to the accompanying drawings in which:

FIG. 1 is a schematic view of a spray arm of a dishwasher according to the present invention;

FIG. 2 is a schematic view of the extension structure of the telescopic arm according to the present invention;

FIG. 3 is a schematic view of the telescopic arm according to the present invention;

FIG. 4 is an exploded view of the swivel sleeve of the present invention;

FIG. 5 is a schematic view of a structure in which a first stationary case and a second stationary case are coupled according to the present invention;

FIG. 6 is a schematic structural view of an internal gear in the present invention;

fig. 7 is a schematic structural view of a mounting bracket according to the present invention.

In the figure, 1-the spray arm body; 2-mounting a base; 3-a linker arm; 4-a telescopic arm; 5-a first cavity; 6-a second cavity; 7-a connecting seat; 8-an annular groove; 9-rotating the sleeve; 10-spraying holes; 11-a spray opening; 12-a first stationary shell; 13-a second stationary shell; 14-a transmission sleeve; 15-a second drive shaft; 16-a first drive shaft; 17-first external teeth; 18-a first gear; 19-internal gear; 20-a screw rod; 21-a nut; 22-second external teeth; 23-a second gear; 24-a third gear; 25-water inlet sleeve; 26-a first half-ring; 27-a second half-ring; 28-limit boss; 29-a positioning boss; 30-a first positioning groove; 31-a card slot; 32-sealing ring; 34-a first positioning block; 35-a second positioning groove; 36-a second locating block; 37-a first snap; 38-a second snap; 39-a first mounting groove; 40-clamping block.

Detailed Description

As shown in fig. 1 to 6, the spray arm of the dishwasher of the present invention comprises a spray arm body 1 and a mounting seat 2, wherein 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 with the telescopic arm 4, the first cavity 5 is communicated with the second cavity 6, 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 with the telescopic arm 4, the rotating sleeve 9 is provided with a spray hole 10, and the spray hole 10 is communicated with the second cavity 6. Through rotating sleeve 9 and being connected with telescopic boom 4's rotation, realized that the spraying angle that sprays hole 10 is adjustable, can make the spraying angle wider, spray efficiency is higher, and it is better to spray the effect.

The connecting arm 3 is connected with the telescopic arm 4 in a sliding mode, the connecting arm 3 is provided with a spraying opening 11, and the telescopic arm 4 abuts against the upper portion of the spraying opening 11. Linking arm 3 and telescopic boom 4's sliding connection realizes the extension of spray boom body 1, sprays the position adjustment of mouth 11, simultaneously, when telescopic boom 4 extends, the mouth 11 that sprays that is supported by telescopic boom 4 can spray, and the extra mouth 11 that sprays that increases during the extension can improve and spray the effect.

The connecting arm 3 is equipped with first set casing 12, flexible arm 4 is equipped with second set casing 13, first set casing 12 and second set casing 13 sliding connection, first set casing 12 rotates and is connected with transmission cover 14 and second transmission shaft 15, second transmission shaft 15 and transmission cover 14 mesh mutually, second set casing 13 rotates and is connected with first transmission shaft 16, first transmission shaft 16 is located in the transmission cover 14, first transmission shaft 16 and transmission cover 14 sliding connection, it is equipped with first external tooth 17 to change cover 9, first transmission shaft 16 is equipped with first gear 18, first gear 18 meshes with first external tooth 17 mutually, mount pad 2 is equipped with internal gear 19, internal gear 19 rotates with mount pad 2 to be connected, internal gear 19 meshes with second transmission shaft 15 mutually. Adopt the transmission form of first transmission shaft 16, second transmission shaft 15 and transmission sleeve 14, realize changeing the control of cover 9 turned angle, the connected mode of transmission sleeve 14 and first transmission shaft 16 simultaneously can adapt to the flexible of flexible arm 4, also can utilize the angle of the accurate regulation commentaries on classics cover 9 of first transmission shaft 16, second transmission shaft 15 and transmission sleeve 14 promptly when flexible arm 4 extends and contracts, realizes spraying the accurate regulation of hole 10.

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 external tooth 22, the transmission sleeve 14 is provided with a second gear 23, the second gear 23 is rotatably connected with the transmission sleeve 14, the second gear 23 is meshed with the second external tooth 22, the first fixed shell 12 is provided with a third gear 24, the third gear 24 is rotatably connected with the first fixed shell 12, and the third gear 24 is meshed with the second gear 23. Through the cooperation of lead screw 20, nut 21, second gear 23 and third gear 24, realized the flexible transmission of telescopic boom 4, after being connected to the motor output shaft with third gear 24, can realize the flexible control to telescopic boom 4 for telescopic boom 4 can adjust flexible volume according to the volume of bowl dish, thereby realizes intelligent washing, improves the quantity of the water conservation simultaneously of cleaning performance. The arrangement mode of the second gear 23 enables the structure of the nut 21, the screw rod 20, the second gear 23 and the third gear 24 to be compact, the space between the transmission sleeve 14 and the connecting arm 3 is used efficiently, the occupied space is small, and the transmission effect is good.

A water inlet sleeve 25 is arranged in the mounting seat 2, and the water inlet sleeve 25 is connected with the connecting seat 7. The mounting seat 2 is arranged on the inner container of the dish washing machine, the fixing of the spray arm body 1 on the dish washing machine is realized, the independent disassembly of the spray arm body 1 can be realized through the mounting seat 2, and the spray arm body 1 can be disassembled from the mounting seat 2 only when the disassembly is needed.

The rotating sleeve 9 comprises a first half ring 26 and a second half ring 27, the spraying holes 10 are formed in the first half ring 26, limiting protrusions 28 are arranged on the inner side surfaces of the first half ring 26 and the second half ring 27, positioning protrusions 29 are arranged on the first half ring 26, a first positioning groove 30 is formed in the second half ring 27, the positioning protrusions 29 are arranged in the first positioning groove 30, clamping grooves 31 are formed in the first half ring 26 and the second half ring 27, and sealing rings 32 are arranged in the clamping grooves 31. The connecting mode that changes cover 9 and adopt first semi-ring 26 and second semi-ring 27 can enough make things convenient for the production and the processing of changeing cover 9, and the semi-ring is more convenient than producing in complete ring, and the yields is higher, and it is more convenient to process draw-in groove 31 in the semi-ring, again can be easy to assemble, first semi-ring 26 and second semi-ring 27 block fixed can. The limiting convex part 28 can limit the rotation angle of the rotating sleeve 9, and the spray hole 10 is prevented from being blocked by an overlarge rotation angle. The matching of the clamping groove 31 and the sealing ring 32 improves the sealing performance and reduces the water leakage between the rotary sleeve 9 and the telescopic arm 4. The positioning protrusions 29 and the first positioning grooves 30 achieve a positioning effect, and facilitate the clamping and installation of the first half ring 26 and the second half ring 27.

The first fixing shell 12 is provided with a first positioning block 34, the first positioning block 34 is arranged in the telescopic arm 4, the telescopic arm 4 is provided with a second positioning groove 35, the second fixing shell 13 is provided with a second positioning block 36, and the second positioning block 36 is arranged in the second positioning groove 35. First constant head tank 30, first locating piece 34 and second constant head tank 35, second locating piece 36 have made things convenient for the connection location of linking arm 3 and first set casing 12, the connection location of telescopic boom 4 and second set casing 13 for the counterpoint of first gear 18 and external tooth is more convenient, and the counterpoint of nut 21 and second gear 23 is more convenient.

The first fixing shell 12 is provided with a first buckle 37, the first buckle 37 is used for clamping the transmission sleeve 14, the second fixing shell 13 is provided with a second buckle 38, and the second buckle 38 is used for clamping the first transmission shaft 16. The adoption of the snap-fit mode facilitates the positioning and installation of the transmission shaft and the transmission sleeve 14.

As shown in fig. 7, a method for manufacturing a spray arm of a dishwasher includes the steps of:

a. preparing: each part is checked, the missing parts are supplemented, and the mounting bracket is checked to ensure that the mounting bracket can be normally used. The preparation work before manufacturing can avoid the loss of parts and the unavailable use of the mounting bracket, and can improve the manufacturing efficiency.

b. Assembly of the first drive shaft 16 and the drive sleeve 14: the first gear 18 is clamped into the first transmission shaft 16, then the distance between the first gears 18 is adjusted according to the distance between the first external teeth 17, the second gear 23 is sleeved on the transmission sleeve 14, and the position of the second gear 23 on the transmission sleeve 14 is adjusted. The assembly of transmission shaft and driving sleeve 14 ensures that the installation of follow-up first transmission shaft 16 and driving sleeve 14 is facilitated, time can be saved, and efficiency is improved.

c. The spray arm body 1 and the rotary sleeve 9 are installed: the telescopic arm 4 is clamped on the connecting arm 3, then two sealing rings 32 are sleeved on each annular groove 8, then the spraying holes 10 are clamped on the first half ring 26, then the clamping grooves 31 of the first half ring 26 and the second half ring 27 are aligned to the sealing rings 32, the first half ring 26 and the second half ring 27 are buckled, the fixing screws are screwed, then the screw rod 20 is sleeved with the nuts 21, and the screw rod 20 is fixed on the connecting arm 3. The telescopic arm 4 is arranged on the connecting arm 3, the rotating sleeve 9 is arranged on the telescopic arm 4, and then the first half ring 26 and the second half ring 27 are aligned and buckled, so that the sealing ring 32 can be accurately clamped in the clamping groove 31, the connecting effect of the first half ring 26 and the second half ring 27 is improved, and then the screw rod 20 and the nut 21 are fixed, and the subsequent installation of the second gear 23 and the third gear 24 is facilitated.

d. Assembling a fixed shell: the second fixing shell 13 is clamped into the first fixing shell 12, the first fixing shell 12 and the second fixing shell 13 are clamped into the first mounting groove of the mounting bracket, and the first fixing shell 12 and the second fixing shell 13 are fixed. After first set casing 12 and second set casing 13 are connected and are accomplished, recycle the installing support and fix, can improve the installation accuracy, it leads to the installation accuracy low to avoid rocking of first set casing 12 and second set casing 13 among the installation, the rotation of cover 9 and the flexible regulation of spray arm body 1 are changeed in the influence, made things convenient for the installation of first set casing 12 and second set casing 13, also make things convenient for the installation of follow-up first transmission shaft 16 and second transmission shaft 15 simultaneously, the installation time is saved, and the installation efficiency is improved.

e. Installation of the first drive shaft 16 and the drive sleeve 14: the third gear 24 is clamped into the first fixed shell 12, then the first transmission shaft 16 is sleeved into the transmission sleeve 14, then the transmission sleeve 14 and the first transmission shaft 16 are simultaneously pressed into the first buckle 37 and the second buckle 38, the angle of the rotating sleeve 9 on the telescopic arm 4 is adjusted, then the spray arm body 1 is clamped onto a clamping block of the mounting bracket, the spray arm body 1 is fixed by using the fixing block on the clamping block, then the clamping block is rotated, so that the spray arm body 1 is positioned right above the first fixed shell 12 and the second fixed shell 13, then the clamping block is pressed downwards, the spray arm body 1 is pressed onto the first fixed shell 12 and the second fixed shell 13, then the second transmission shaft 15 is clamped onto the first fixed shell 12, then the second transmission shaft 15 is connected onto an output shaft of the motor, the mounting effect between the second transmission shaft 15 and the transmission sleeve 14, the first transmission shaft 16 and the rotating sleeve 9 is checked, and then the first fixed shell 12 and the second fixed shell 13 are fixed on the spray arm body 1 by using screws, and taking down the mounted spray arm body 1 from the mounting bracket. Through the installation of installing support assistance, can improve the installation accuracy of transmission sleeve 14, first transmission shaft 16 and second transmission shaft 15, can improve the connection effect of first set casing 12 and second set casing 13 simultaneously, make the slip between the flexible of flexible arm 4, first set casing 12 and the second set casing 13 more level and smooth and easy, reduce the emergence of trouble.

f. And (3) calibrating the mounting seat 2: the internal gear 19 is clamped on the mounting base 2, and then the mounting base 2 is fixed on the connecting base 7, and the second transmission shaft 15 is meshed with the internal gear 19. The spray arm body 1 is arranged on the mounting base 2, so that the clamping between the second transmission shaft 15 and the internal gear 19 can ensure the transmission between the internal gear 19 and the second transmission shaft 15.

g. And (5) overall operation detection.

The detailed steps of step g are: fixed mounting base 2, later with advance water piping connection to mount pad 2, open the water intaking valve, look over the spraying effect of spray arm body 1, whether the inspection spray arm body 1 junction has the condition of leaking, later be connected to different motor output shafts respectively with third gear 24 and internal gear 19, open the motor of connecting internal gear 19 after, look over the rotation condition of changeing cover 9, change cover 9 and rotate the motor that normally then open third gear 24 and connect, look over the flexible condition of flexible arm 4 and change the condition of leaking of cover 9 and flexible arm 4 when flexible arm 4 is flexible. The spray arm that the equipment was accomplished detects, avoids the condition that the spray arm appears leaking, can detect the operational effect of 16 second transmission shafts 15 of first transmission shaft, transmission sleeve 14 and second gear 23 and third gear 24 simultaneously, if leak or flexible arm 4 can't stretch out and draw back, change the unable rotation of cover 9, then need demolish and wash the equipment. And the quality of the assembled spray arm is detected, so that unqualified spray arms are prevented from leaving the factory.

When the telescopic arm type spraying device is used, a motor for controlling the rotation of the rotary sleeve 9 is connected with the internal gear 19, the internal gear 19 is driven to rotate through the motor, so that the rotary sleeves 9 on all the telescopic arms 4 are driven to rotate, the angle of the spraying hole 10 is adjusted, all the rotary sleeves 9 can be controlled to rotate only by starting the motor for controlling the rotation of the rotary sleeve 9 when the angle of the spraying hole 10 needs to be adjusted, the telescopic arms 4 are stretched and retracted through connecting the motor for controlling the telescopic arms 4 with the third gear 24, and after the motor for controlling the telescopic arms 4 is turned on, the motor drives the third gear 24 to rotate, so that the second gear 23 is driven to rotate, and finally the nut 21 is driven to rotate, so that the telescopic arms 4 slide on the connecting arm 3, and the telescopic arms 4 are stretched and. The invention realizes the adjustable spraying angle of the spraying holes 10, and can ensure wider spraying angle, higher spraying efficiency and better spraying effect.

The method comprises the steps of preparing a, assembling b a first transmission shaft 16 and a transmission sleeve 14, installing c a spray arm body 1 and a rotating sleeve 9, assembling d a fixed shell, installing e the first transmission shaft 16 and the transmission sleeve 14, calibrating f an installation seat 2, detecting g integral operation, realizing the production and the manufacture of the spray arm through 7 manufacturing steps, optimizing the steps, simplifying the manufacturing steps, improving the production efficiency, simultaneously, adopting an installation support to assist the installation of the spray arm, improving the connection effect of all parts in the spray arm, improving the installation precision, prolonging the service life of the spray arm and preventing the spray arm from easily breaking down.

The above is only a specific embodiment of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent substitutions or modifications made based on the present invention to solve the same technical problems and achieve the same technical effects are within the scope of the present invention.