CN206675493U

CN206675493U - For dish-washing machine spray arm device and there is its dish-washing machine

Info

Publication number: CN206675493U
Application number: CN201621369706.6U
Authority: CN
Inventors: 黎铭峰
Original assignee: Midea Group Co Ltd; Foshan Shunde Midea Washing Appliances Manufacturing Co Ltd
Current assignee: Wuhu Midea Smart Kitchen Appliance Manufacturing Co Ltd
Priority date: 2016-12-13
Filing date: 2016-12-13
Publication date: 2017-11-28
Anticipated expiration: 2026-12-13

Abstract

The utility model discloses a kind of spray arm device for dish-washing machine and there is its dish-washing machine, the spray arm device for dish-washing machine includes：Spray arm seat；Central gear, the water outlet of spray arm seat is located at, and the relative position of central gear and spray arm seat is fixed；Planetary gear, it is connected with central gear；Tooth rest, central gear and planetary gear are rotatably arranged at below tooth rest；Spray arm body, it is connected with being relatively fixed with planetary gear, the spray orifice and thrust spray orifice of spray arm seat is communicated with spray arm body, thrust spray orifice is suitable to injection water and rotates spray arm body.According to the spray arm device of the present utility model for dish-washing machine, because spray arm body can the central shaft rotation around spray arm body synchronous with planetary gear, spray arm body can also be synchronously around the central shaft revolution of tooth rest with planetary gear simultaneously, so as to form predetermined injection track by the spray orifice on spray arm body, tableware is preferably washed.

Description

For dish-washing machine spray arm device and there is its dish-washing machine

Technical field

Household electrical appliance technical field is the utility model is related to, more particularly to a kind of spray arm device and tool for dish-washing machine There is its dish-washing machine.

Background technology

In correlation technique, the operation principle of domestic bowl-washing is by several spray arm rotary sprays of inside, and tableware is entered Row constantly covering jet cleaning, reflection with reference to water, spill and trickle etc. and act on, complete the cleaning to tableware.Spray arm washs Performance is the important embodiment of dishwasher product power, therefore innovates spray arm technology as a crucial scientific research in dish-washing machine industry Point.In dish-washing machine, because the coverage that spray arm simple rotation is formed is circular, therefore four angles of internal washing zone Can there is a situation where not covering washing deficiency, the entirety for reducing dish-washing machine is cleaned effect by this, so as to reduce dishwasher product Power and the market competitiveness.

Utility model content

The utility model is intended to one of technical problem at least solving in correlation technique to a certain extent.Therefore, this reality Be to propose a kind of spray arm device for dish-washing machine with a new purpose, the spray arm device for dish-washing machine it is clear Coverage expansion is washed, effect is cleaned and improves.

According to the spray arm device for dish-washing machine of the utility model first aspect embodiment, including：Spray arm seat；Centre tooth Wheel, the central gear are located at the water outlet of the spray arm seat, and the relative position of the central gear and the spray arm seat It is fixed；Planetary gear, the planetary gear are connected with the central gear；Tooth rest, the central gear and the row Star gear is rotatably arranged at below the tooth rest；Spray arm body, the spray arm body are relatively fixed with the planetary gear Ground is connected, and the spray orifice and thrust spray orifice of the spray arm seat are communicated with the spray arm body, and the thrust spray orifice is suitable to injection water Flow and rotate the spray arm body.

According to the spray arm device for dish-washing machine of the utility model embodiment, the current into spray arm seat can be by spray arm The delivery port of seat, then further sprayed via spray arm body from spray orifice.Because spray arm body can be synchronous with planetary gear around spray arm body Central shaft rotation, while the central shaft that spray arm body and planetary gear can also be synchronously around tooth rests revolves round the sun, so as to pass through spray Spray orifice on arm body forms predetermined injection track, preferably washs tableware.

In addition, skill additional as follows is also had according to the spray arm device for dish-washing machine of the utility model above-described embodiment Art feature：

According to some embodiments of the utility model, the spray arm device also includes travelling gear, and the travelling gear can Rotationally be located on the tooth rest, and the travelling gear respectively with the central gear and the planetary gear external toothing.

Further, the gear ratio of the central gear and the travelling gear is 1:1, the planetary gear with it is described in The gear ratio of heart gear is 1:2.

In some embodiments of the utility model, the central gear, the travelling gear and the planetary gear It is sequentially arranged along straight line.

According to some embodiments of the utility model, the ratio of the planetary rotation rotating speed and revolution rotating speed is 1:-1。

According to some embodiments of the utility model, the planetary reference radius r is at 10 millimeters to 20 millimeters In the range of, the revolution-radius R of the spray arm body is in the range of 70 millimeters to 140 millimeters.

According to some embodiments of the utility model, formed with the newel extended downwardly on the spray arm body, in described Stem is passed down through the tooth rest and the planetary gear and fixed by snap ring spacing.

According to some embodiments of the utility model, the spray arm body includes a spray arm or the spray arm body including multiple Spray arm, multiple spray arms are in the angle of predetermined angular, and the spray arm includes：Body, the body is towards away from the spray arm body Central shaft direction extension；Support arm, the support arm connects the body, and the support arm connects with the body, institute Stating support arm includes one or more.

Further, the body edge surround the spray arm body on the direction of the central shaft away from the spray arm body Width dimensions on the direction of central shaft are gradually reduced.

In some embodiments of the utility model, it is equipped with each spray arm and is arranged symmetrically on the body And along direction two support arms positioned opposite of the central shaft around the spray arm body.

According to some embodiments of the utility model, the central gear coordinates for making the spray with the planetary gear The trajectory that hole is formed meets parametric equation：X=R*cos (ang)+D*cos (ang), y=R*sin (ang)-D*sin (ang), Wherein, ang is the angle that turns over of the tooth rest, R be the spray arm body central shaft to the central shaft of the tooth rest away from From D is distance of the spray orifice to the central shaft of the spray arm body, and D is not less than R.

According to some embodiments of the utility model, the central gear includes gear ring, shape on the internal perisporium of the gear ring Into there is spaced apart multiple card convexs, the upper end of the periphery wall of the spray arm seat is formed with the card being adapted to multiple card convexs Groove, the central gear and the spray arm seat clamping.

Further, one end of the central shaft of the remote spray arm body of the tooth rest is into there is the axle sleeve that extends downwardly, The upper end of the axle sleeve is formed with defining flange, and the lower end inside of the spray arm seat is formed with for the spacing of the spacing axle sleeve Portion, the defining flange are adapted to abut against the upper edge of the spray arm seat and the lower end of the axle sleeve and only support the limiting section.

In some embodiments of the utility model, the periphery of the newel upper end formed with extend downwardly and with it is described The coaxial annular turn-up portion of spray arm body, one end of the central shaft of the neighbouring spray arm body of the tooth rest is formed with upwardly extending And the annular slot being adapted to the annular turn-up portion, the spray arm body and the tooth rest clamping.

According to the dish-washing machine of the utility model second aspect embodiment, including：Dish-washing machine body, in the dish-washing machine body Formed with washing cavities；Spray arm device, the spray arm device are located in the washing cavities, and the spray arm device is use described above In the spray arm device of dish-washing machine.

Additional aspect and advantage of the present utility model will be set forth in part in the description, partly by from following description In become obvious, or by it is of the present utility model practice recognize.

Brief description of the drawings

Of the present utility model above-mentioned and/or additional aspect and advantage will in the description from combination accompanying drawings below to embodiment Become obvious and be readily appreciated that, wherein：

Fig. 1 is the overall structure diagram according to the spray arm device of the utility model embodiment.

Fig. 2 is the cross section structure diagram according to the spray arm device of the utility model embodiment.

Fig. 3 is the partial enlarged drawing at Fig. 2 centre circles A.

Fig. 4 is a Fig. 2 partial enlarged drawing.

Fig. 5 is the assembly relation explosive view according to the spray arm device of the utility model embodiment.

Fig. 6 is the partial enlarged drawing at Fig. 5 centre circles C.

Fig. 7 is a partial enlarged drawing in Fig. 5.

Fig. 8 is the broken section structural representation according to the tooth rest of the utility model embodiment.

Fig. 9 is the overall structure diagram according to the spray arm seat of the utility model embodiment.

Figure 10 is the partial enlarged drawing at Fig. 9 centre circles E.

Figure 11 is central gear, travelling gear and the planetary gear in the spray arm device according to the utility model embodiment Meshing relation schematic diagram.

Figure 12 is central gear, travelling gear and the letter of planetary transmission mechanism in the spray arm device in Figure 11 Figure.

Figure 13 is the structural representation of the spray arm body of one embodiment in the spray arm device according to the utility model embodiment.

Figure 14 is the injection track schematic diagram that spray orifice is corresponded to according to the spray arm device of the utility model embodiment, wherein in figure The frame of periphery represents the square washing zone border in dish-washing machine, and chain-dotted line is labeled as the long axis direction of ellipse.

Reference：

For the spray arm device 100 of dish-washing machine,

Spray arm seat 1, the delivery port 11 of spray arm seat 1, neck 12, limiting section 13,

Central gear 2, gear ring 21, card convex 211,

Planetary gear 3, axis hole 31,

Tooth rest 4, the central shaft 41 of tooth rest 4, axle sleeve 42, defining flange 421, annular slot 43, tooth rest 4 it is interior Chamber 44, water export 45,

Spray arm body 5, spray orifice 51, thrust spray orifice 52, newel 53, annular turn-up portion 531, Access Division 532, spray arm body 5 Central shaft 54, spray arm 55, body 551, support arm 552, the inner chamber 56 of spray arm body 5,

Travelling gear 6, snap ring 7.

Embodiment

Embodiment of the present utility model is described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning Same or similar element is represented to same or similar label eventually or there is the element of same or like function.Below by ginseng The embodiment for examining accompanying drawing description is exemplary, it is intended to for explaining the utility model, and it is not intended that to the utility model Limitation.

The spray arm device for dish-washing machine according to the utility model embodiment is described in detail with reference to Fig. 1 to Figure 14 100。

With reference to Fig. 1, according to the spray arm device 100 for dish-washing machine of the utility model first aspect embodiment, including：Spray Arm seat 1, central gear 2, planetary gear 3, tooth rest 4 and spray arm body 5.

Specifically, reference picture 7 and Fig. 2, central gear 2 are located at the delivery port 11 of spray arm seat 1, so that enter spray The current of arm seat 1 can further flow to spray arm body 5 by the delivery port 11 of spray arm seat 1.And central gear 2 and spray arm seat 1 Relative position is fixed.It so may insure the use reliability of spray arm device 100.

Referring to Figures 1 and 2, planetary gear 3 is connected with central gear 2, is so advantageously implemented the further of power Transmit.Central gear 2 and planetary gear 3 are rotatably arranged on tooth rest 4 (such as central gear 2 and planetary gear 3 Rotationally it is located at below tooth rest 4).That is, central gear 2 is rotatably arranged on tooth rest 4；Planetary gear 3 can Rotationally it is located on tooth rest 4.As a result, tooth rest 4 is easily achieved around the rotation of central gear 2, tooth rest 4 is with planet The rotation of gear 3, tooth rest 4 also revolve round the sun around the central shaft 41 of tooth rest 4, and the center line of central gear 2 is the central shaft of tooth rest 4 41。

Reference picture 5 and Fig. 6, spray arm body 5 are connected with being relatively fixed with planetary gear 3, can so realize spray arm body 5 and row The synchronous axial system of star gear 3.Spray arm body 5 is provided with spray orifice 51 and thrust spray orifice 52, and spray orifice 51 and thrust spray orifice 52 are and spray arm Seat 1 connects, and in other words, spray orifice 51 connects with spray arm seat 1, and thrust spray orifice 52 also connects with spray arm seat 1.Wherein, thrust spray orifice 52 Suitable for injection water and rotate spray arm body 5, that is to say, that thrust spray orifice 52 can provide driving force for the rotation of spray arm body 5, So that tableware can preferably be washed by spray arm device 100.As a result, the current into spray arm seat 1 can be by spraying The delivery port 11 of arm seat 1, then further sprayed via spray arm body 5 from spray orifice 51, reflection with reference to current, spill and trickle etc. and make With the washing realized to tableware.

Wherein, can be by the delivery port 11 of spray arm seat 1, then via spray arm body 5 further from spray into the current of spray arm seat 1 Hole 51 sprays.In this process, because current have certain pressure so that current can drive spray arm body 5 and planet tooth Take turns 3 synchronous rotaries；Again because planetary gear 3 is rotatably arranged at below tooth rest 4, can so it prevent pollutant from entering tooth The stuck situation of gear is caused in wheel mechanism.Can be in spray arm body 5 by the rotation also tooth rest 4 of planetary gear 3 Mandrel 54 rotates (now, tooth rest 4 can be as planetary gear 3 be around the rotation of central shaft 54 of spray arm body 5)；Because planetary gear 3 are connected with central gear 2, by the rotation of planetary gear 3 central gear 2 can be driven to rotate, because central gear 2 can Rotationally it is located on tooth rest 4, so that tooth rest 4 is easily achieved that (now, tooth rest 4 is also relative to the rotation of central gear 2 It can be revolved round the sun around the central shaft 41 of tooth rest 4).Thus, spray arm body 5 can the central shaft around spray arm body 5 synchronous with planetary gear 3 54 rotations, while the central shaft 41 that spray arm body 5 and planetary gear 3 can also be synchronously around tooth rests 4 revolves round the sun, so as to pass through spray arm Spray orifice 51 on body 5 forms predetermined injection track (such as the elliptoid injection trajectory of prolate), is better achieved to tableware Washing.

According to the spray arm device 100 for dish-washing machine of the utility model embodiment, the current into spray arm seat 1 can be by The delivery port 11 of spray arm seat 1, then further sprayed via spray arm body 5 from spray orifice 51.Because spray arm body 5 can be with planetary gear 3 The synchronous rotation of central shaft 54 around spray arm body 5, while spray arm body 5 can also be synchronously around the central shaft 41 of tooth rest 4 with planetary gear 3 Revolution, so as to form predetermined injection track by the spray orifice 51 on spray arm body 5, preferably washs tableware.

Reference picture 1 simultaneously combines Figure 10 and Figure 11, and according to some specific embodiments of the present utility model, spray arm device 100 is also Including travelling gear 6, travelling gear 6 is rotatably arranged on tooth rest 4, and travelling gear 6 respectively with central gear 2 and planet The external toothing of gear 3.In other words, travelling gear 6 and the external toothing of central gear 2, travelling gear 6 and planetary gear 3 and external toothing. The direction of rotation of planetary gear 3 and central gear 2 can so be ensured on the contrary, namely planetary gear 3 is together with the same of spray arm body 5 It is in opposite direction together with the synchronous revolution of spray arm body 5 with planetary gear 3 to walk sense of rotation.So can be to form predetermined injection rail Mark provides advantage.

Specifically, travelling gear 6 can be imparted power to by the rotation of planetary gear 3 and is further delivered to center Gear 2 so that tooth rest 4 not only can be around the rotation of central shaft 54 of spray arm body 5, can also be around the public affairs of central shaft 41 of tooth rest 4 Turn, so as to further make spray orifice 51 form predetermined injection track.

Certainly, the utility model not limited to this, in other embodiment of the present utility model, travelling gear 6 and planet tooth Wheel 3 can also form planetary gear set, the planetary gear set and the external toothing of central gear 2, the planetary gear set In all gears between be all to use external toothing mode.Further, in addition to planetary gear and central gear 2, other teeth Wheel is referred to as travelling gear.The planetary gear set forms gear train mechanism, the gear train machine with central gear 2 Structure is driven for even numbers level.Preferably, the gear train mechanism is that secondary transmission or level Four are driven.Because central gear 2 is Fixed, it can be seen from even numbers level drive connection, the sense of rotation of planetary gear 3 and revolution are in opposite direction, i.e., spray arm body 5 from Turn direction and revolution is in opposite direction, so can provide advantage to form predetermined injection track.

For the ease of description, the utility model is described so that the gear train mechanism is secondary transmission as an example, so And this can not be interpreted as the limitation to scope of protection of the utility model.

Reference picture 8 simultaneously combines Fig. 1, described formed with the power transmission shaft for fixed and positioned travelling gear 6 on tooth rest 4 Power transmission shaft extends downwardly；Formed with along the direction parallel with the central shaft 41 of tooth rest 4 (such as upper and lower on travelling gear 6 To) hole of extension, the hole is adapted to the power transmission shaft, travelling gear 6 and the shaft hole matching of tooth rest 4.Thus, tooth rest is passed through 4 can realize effective transmission of power with the cooperation of travelling gear 6.

Further, the gear ratio of reference picture 1 and combination Figure 10 and Figure 11, central gear 2 and travelling gear 6 is 1:1, OK The gear ratio of star gear 3 and central gear 2 is 1:2.For example, the number of teeth of central gear 2 and travelling gear 6 is 64, planetary gear 3 The number of teeth be 32.Further, because central gear 2 is fixed, according to gear ratio and meshing relation, it is known that planet Gear 3 is 1 together with the rotating ratio of rotation and the revolution of spray arm body 5:- 1, i.e. rotation and revolution is in opposite direction, autorotation speed and public affairs Rotational speed rate it is equal.Advantage so can be provided to form predetermined injection track.

In some specific embodiments of the present utility model, reference picture 1 simultaneously combines Figure 10 and Figure 11, central gear 2, transmission Gear 6 and planetary gear 3 are sequentially arranged along straight line.That is, central gear 2, travelling gear 6 and planetary gear 3 The line at center is on same straight line, thus, is easy to the peace installation and dismantling of central gear 2, travelling gear 6 and planetary gear 3 Unload, can also make full use of space.

According to some specific embodiments of the present utility model, the rotation rotating speed of planetary gear 3 and the ratio of revolution rotating speed are 1:-1.That is, the rotating ratio of the rotating speed of planetary gear 3 and tooth rest 4 is 1:- 1, the i.e. speed and gear of planetary gear 3 The speed of frame 4 is equal, in the opposite direction.Thus, it is possible to advantage is provided to form predetermined injection track, so as to preferably wash Wash tableware.

Reference picture 1 simultaneously combines Figure 10 and Figure 11, because the gear ratio of central gear 2 and travelling gear 6 is 1:1, planet tooth The gear ratio of wheel 3 and central gear 2 is 1:2.For example, the number of teeth of central gear 2 and travelling gear 6 is 64, the tooth of planetary gear 3 Number is 32.It follows that the reference radius r of planetary gears 3 of the revolution-radius R of spray arm body 5 equal to 7 times.

Specifically, central gear 2 and travelling gear 6 have identical modulus and the number of teeth, and its reference circle is also the same.And go The gear ratio of star gear 3 and central gear 2 is 1:2, both reference radius ratios are also 1：2.Therefore, calculate and understand planet tooth The rotating shaft (i.e. the central shaft 54 of spray arm body 5) of wheel 3 and the distance of the central shaft 41 of tooth rest 4 are that the revolution-radius R of spray arm body 5 is equal to 7 times of reference radius r of planetary gear 3.

According to some specific embodiments of the present utility model, the reference radius r of planetary gear 3 can be at 10 millimeters to 20 In the range of millimeter, the revolution-radius R (the distance R in reference picture 1) of spray arm body 5 can be in 70 millimeters to 140 millimeters of scope It is interior.Thus, predetermined injection track can be formed by spray arm device 100, improves washability.

Wherein, the reference radius r of planetary gear 3 can be 10 millimeters, 12 millimeters, 15 millimeters, 17 millimeters, 19 millimeters or 20 millimeters etc..The revolution-radius R of spray arm body 5 can be 70 millimeters, 80 millimeters, 90 millimeters, 100 millimeters, 110 millimeters, 120 millis Rice, 130 millimeters or 140 millimeters etc..The reference radius r of planetary gear 3 can be set according to adaptability is actually needed.

Reference picture 3 simultaneously combines Fig. 2, according to some specific embodiments of the present utility model, formed with to downward on spray arm body 5 The newel 53 stretched, newel 53 are passed down through tooth rest 4 and planetary gear 3 and fixed by snap ring 7 spacing.Here tooth rest 4 It is each provided at planetary gear 3 below spray arm body 5, thus, spray arm body 5 and tooth rest 4 and planet can be realized by snap ring 7 Being reliably connected between gear 3.

Wherein, can there are connecting shaft such as splined shaft, planetary gear 3 with reference to Figure 10 and Figure 11, the lower end of newel 53 with shape On such as splined hole of axis hole 31 formed with connecting shaft adaptation, thus, it is possible to realize the same of spray arm body 5 and planetary gear 3 Step rotation.

In addition, as shown in Figure 10 and Fig. 5, the lower end of newel 53 can also be used formed with Access Division 532, Access Division 532 In with the clamping of snap ring 7.Being reliably connected between snap ring 7 and spray arm body 5 can so be realized so that planetary gear 3 and tooth rest 4 Between relative position fix.

Reference picture 1 and Fig. 9, according to some specific embodiments of the present utility model, spray arm body 5 includes one or in predetermined Multiple spray arms 55 of the angle of angle.That is, spray arm body 5 can include a spray arm 55, it is preferable that spray arm body 5 includes Multiple spray arms 55, multiple spray arms 55 can be in the angle of predetermined angular.Spray arm device 100 can so be expanded to a certain extent Washing scope.

Here, it is necessary to which explanation, the spray arm device 100 provided by the utility model for dish-washing machine can complete other side The covering washing in the diagonal region in shape washing zone, the region at four angles is included here, it is dead so as to eliminate washing Area, improve overall clean effect.Also, square washing zone includes square area, also including rectangular region, i.e., two right Linea angulata angle can take acute angle and right angle.The angle of the predetermined angular formed between multiple spray arms 55 can be described two diagonal Twice of wire clamp angle.

Wherein, include with reference to Fig. 6, spray arm 55：Body 551 and support arm 552.Specifically, body 551 is towards away from spray arm The direction extension of the central shaft 54 (i.e. the Pivot axle of spray arm body 5, similarly hereinafter) of body 5.Support arm 552 connects body 551, and props up Arm 552 connects with body 551, and support arm 552 includes one or more.Thus, the current for spray arm body 5 being entered from spray arm seat 1 can To flow through the inner chamber 56 for the spray arm body 5 that body 551 and support arm 552 cooperatively form, further sprayed by spray orifice 51, so may be used To be expanded the spray regime of current by support arm 552, so as to expand the washing scope of spray arm device 100.

Further, reference picture 6 and Fig. 5 is combined, on the direction of the central shaft 54 away from spray arm body 5, the edge of body 551 Width dimensions on the direction of the central shaft 54 of spray arm body 5 are gradually reduced.As a result, flow through the current of spray arm body 5 more Add steadily, because being sprayed with dampening by spray orifice 51, hydraulic pressure or water can all reduce, so width dimensions, which reduce, can ensure end Water and hydraulic pressure, so as to preferably wash tableware.

Here, it is necessary to illustrate, on the direction of the central shaft 54 away from spray arm body 5, in body 551 along around spray On the direction of the central shaft 54 of arm body 5, from the direction of the central shaft 54 adjacent to spray arm body 5 to the central shaft 54 away from spray arm body 5 Direction on, the width dimensions of body 551 are gradually reduced.

As illustrated in figures 6 and 5, in some specific embodiments of the present utility model, two are equipped with each spray arm 55 Support arm 552, two support arms 552 are arranged symmetrically on body 551, and central shaft of two support arms 552 along circular spray arm body 5 54 direction is positioned opposite.Thus, it is possible to force balance, improves the work smoothness of spray arm device 100, also helps expansion spray The washing scope of arm assembly 100.

Reference picture 1, according to some embodiments of the utility model, central gear 2 coordinates for making spray orifice with planetary gear 3 51 trajectories formed meet parametric equation：X=R*cos (ang)+D*cos (ang), y=R*sin (ang)-D*sin (ang), Wherein, ang is the angle that tooth rest 4 turns over, and R is that the central shaft 54 of spray arm body 5 is to the distance of the central shaft 41 of tooth rest 4, D Spray orifice 51 arrives the distance of the central shaft 54 of spray arm body 5, and D is not less than R.Thus, it is possible to form the injection track of similar ellipse Line, so as to realize the cleaning at the four of square shaped region angles, and then avoid cleaning dead angle, improve washability.

Reference picture 7, according to some specific embodiments of the present utility model, central gear 2 includes gear ring 21, gear ring 21 it is interior Formed with spaced apart multiple card convexs 211 on perisporium, the upper end of the periphery wall of spray arm seat 1 is formed with suitable with multiple card convexs 211 The multiple necks 12 matched somebody with somebody, central gear 2 and the clamping of spray arm seat 1.Thus, the cooperation of multiple card convexs 211 and multiple necks 12 is passed through Being reliably connected between central gear 2 and spray arm seat 1 can be realized.

Further, as shown in fig. 4 and fig. 2, one end of the central shaft 54 of the remote spray arm body 5 of tooth rest 4 is into there is axle sleeve 42, axle sleeve 42 extends downwardly, and the upper end (upper end of the bottom bracket axle 42 of reference picture 4) of axle sleeve 42 is formed with defining flange 421, spray arm seat Formed with limiting section 13 on the inside of 1 lower end (lower end of spray arm seat 1 in reference picture 4), limiting section 13 is used for limit shaft sleeve 42, spacing Flange 421 is adapted to abut against the upper edge of spray arm seat 1, and limit is only supported in the lower end (lower end of the bottom bracket axle 42 of reference picture 4) of axle sleeve 42 Position portion 13.Wherein, axle sleeve 42 is adapted to pass through central gear 2 and inserted in spray arm seat 1 so that tooth rest 4 freely revolves with respect to spray arm seat 1 Turn.

Wherein, reference picture 2 and Fig. 7, the inner chamber 44 of the tooth rest 4 formed with connection spray arm seat 1 on tooth rest 4, tooth rest 4 One end of central shaft 54 of neighbouring spray arm body 5 of inner chamber 44 connected formed with water export 45, water export 45 with spray orifice 51, The inner chamber 56 of spray arm body 5 formed with connection spray orifice 51 and spray arm seat 1 on spray arm body 5.

Specifically, into spray arm seat 1 current can by the delivery port 11 of spray arm seat 1, into the inner chamber 44 of tooth rest 4, By the water export 45 on tooth rest 4, the inner chamber 56 of spray arm body 5 is flowed into, then is sprayed via spray orifice 51, so as to preferably real Now to the washing of tableware.

Reference picture 3 and Fig. 2 simultaneously combine Fig. 5 and Fig. 8, in some specific embodiments of the present utility model, on newel 53 The periphery at end is formed with annular turn-up portion 531, and annular turn-up portion 531 extends downwardly and, the neighbour of tooth rest 4 coaxial with spray arm body 5 One end of the central shaft 54 of nearly spray arm body 5 is formed with the annular slot 43 upwardly extended, annular slot 43 and annular turn-up portion 531 Adaptation, spray arm body 5 and the clamping of tooth rest 4.Thus, spray can be realized by the cooperation of annular slot 43 and annular turn-up portion 531 Being reliably connected between arm body 5 and tooth rest 4.

According to the utility model second aspect embodiment dish-washing machine (not shown), including：Dish-washing machine body, it is described to wash Formed with washing cavities in bowl machine body；Spray arm device, the spray arm device are located in the washing cavities, and the spray arm device is Spray arm device 100 for dish-washing machine described above.Thus, by setting above-mentioned first aspect to implement on the dish-washing machine The spray arm device 100 for dish-washing machine of example, the cleaning performance of the dish-washing machine can be effectively improved.

The spray arm device for dish-washing machine according to the utility model embodiment is described in detail with reference to Fig. 1 to Figure 14 100 course of work.

Specifically, can be by the delivery port 11 of spray arm seat 1, into the inner chamber of tooth rest 4 into the current of spray arm seat 1 44, by the water export 45 on tooth rest 4, the inner chamber 56 of spray arm body 5 is flowed into, then sprayed via spray orifice 51, so as to more preferable Realize the washing to tableware in ground.So far the work of the spray arm device 100 for dish-washing machine according to the utility model embodiment is completed Make process.

According to the spray arm device 100 for dish-washing machine of the utility model embodiment, mainly there is specific match somebody with somebody by one group The gear mechanism of conjunction relation so that the spray arm body 5 being connected with end gear (such as planetary gear 3) forms rotating ratio 1:- 1 from Turn and revolve round the sun, be i.e. rotation and revolution is in opposite direction, and speed is identical.Now, the spray orifice 51 on spray arm body 5 is along the elliptoid rail of prolate Trace moves, and the long axis direction of elliptical orbit line overlaps with the diagonal of square washing zone or near diagonal, spray The water spray washing can of hole 51 covers four Angle Positions.

Specifically, the utility model proposes spray arm device 100 mainly include：Spray arm seat 1, central gear 2 (such as fixed tooth Wheel), tooth rest 4 (such as aqueduct), travelling gear 6, planetary gear 3 and spray arm body 5.

Specifically, all gears are all disposed within the lower section of tooth rest 4, can so prevent pollutant from entering in gear mechanism Cause the situation that gear is stuck.

Specifically, central gear 2 is fixedly mounted on the top of spray arm seat 1.Formed with water inlet on axle sleeve 42 on tooth rest 4 In mouth insertion spray arm seat 1, and tooth rest 4 can rotate freely with respect to spray arm seat 1.

Specifically, travelling gear 6 and planetary gear 3 are arranged under tooth rest 4, central gear 2, travelling gear 6 and row Star gear 3 successively arranges along straight line, all external toothing relation between gear.For example, travelling gear 6 and the external toothing of central gear 2, transmission Gear 6 and planetary gear 3 and external toothing.

Specifically, the reference radius r range sets of planetary gear 3 are 10mm to 20mm, therefore the revolution of spray arm body 5 is partly Footpath R scopes are 70mm to 140mm.

Specifically, spray arm body 5 and tooth rest 4 can relatively rotate.Flowed out with the water of tooth rest 4 inner chamber 56 of spray arm body 5 Mouth 45 is communicated, and washings are introduced to the inner chamber 56 of spray arm body 5.Several spray orifices 51, spray orifice 51 and spray arm body are opened up on spray arm body 5 5 inner chamber 56 communicates, and can eject washings.

Specifically, the water inlet center of the inner chamber 56 of spray arm body 5 is provided with cylinder, referred to as newel 53.Accordingly, A through hole is provided with the water export 45 of tooth rest 4.During installation, newel 53 will pass through the through hole, from the bottom of tooth rest 4 Portion is stretched out, then is connected with planetary gear 3 by snap ring 7.

Further, the spray orifice 51 on spray arm body 5 moves along the elliptoid trajectory of prolate, and elliptical orbit line meets as follows Parametric equation：X=R*cos (ang)+D*cos (ang), y=R*sin (ang)-D*sin (ang), wherein ang are 4 turns of tooth rest The revolution angle of the angle crossed, i.e. spray arm body 5；R is the distance that the central shaft 54 of spray arm body 5 arrives the central shaft 41 of tooth rest 4, i.e., The revolution-radius of spray arm body 5；D is distance of the spray orifice 51 to the central shaft 54 of spray arm body 5, and D values are more than R.

Further, the angle of two transverses is defined as the phase difference angle of two elliptical orbit lines, and it is equal to two The 1/2 of angle between the line of central shaft 54 of individual spray orifice 51 and spray arm body 5.

Further, when spray orifice 51 is on the straight line sent from the pivot of spray arm body 5, then spray orifice 51 defines For same group of spray orifice.Two groups of spray orifices at least being opened up on spray arm body 5, and normally, the group number of spray orifice is even numbers, such as two groups, Four groups and six groups.

Further, when the major axis of elliptical orbit line overlaps or near diagonal with a diagonal of washing zone When, spray orifice 51 can just cover a diagonal region.It is hereby understood that need at least two groups of spray orifice 51, respectively covering Two diagonal regions, it is possible to realize the covering washing at four angles in square shaped washing zone.

Further, if using two groups of spray orifices 51, two groups of oval major axis that they are formed are typically set to respectively with two Bar diagonal overlaps, therefore the phase difference angle of two groups of elliptical orbit lines need to be set as the 2 of two diagonal angles of washing zone Times.

In summary, the spray arm device 100 provided by the utility model for dish-washing machine can complete square shaped scrubbing section The covering washing in the diagonal region in domain, the region at four angles is included here, so as to eliminate washing dead band, is improved whole Body cleans effect.Also, square washing zone includes square area, also including rectangular region, i.e. two diagonal angles Acute angle and right angle can be taken.

The tool according to the spray arm device 100 of the present utility model for dish-washing machine is described in detail with reference to Fig. 1 to Figure 14 Body embodiment.

Specifically, Fig. 1 to Figure 14 is embodiment provided by the utility model, and its technical scheme is：Have by one group The gear mechanism of specific matching relationship so that the spray arm body 5 being connected with planetary gear 3 forms rotating ratio 1:- 1 rotation and public affairs Turn, i.e. rotation and revolution is in opposite direction, and speed is identical.Now, the spray orifice 51 on spray arm body 5 is transported along the elliptoid trajectory of prolate It is dynamic, and the long axis direction of elliptical orbit line overlaps with the diagonal of square washing zone or near diagonal, realizes to bag Include the covering washing in the diagonal region of four Angle Positions.

In the present embodiment, spray arm device 100 includes：Spray arm seat 1, central gear 2, tooth rest 4, travelling gear 6, planet tooth Wheel 3 and spray arm body 5.

In the present embodiment, three gears (including central gear 2, travelling gear 6 and planetary gear 3) are all disposed within tooth rest 4 lower sections, to prevent pollutant from entering in gear mechanism the situation for causing gear stuck.

In the present embodiment, four card convexs 211 and four cards of the periphery of spray arm seat 1 that central gear 2 is opened up by its inner side The cooperation of groove 12, it is fixedly mounted on the top of spray arm seat 1.Formed with water inlet insertion spray arm seat 1 on axle sleeve 42 on tooth rest 4 In, tooth rest 4 can rotate freely with respect to spray arm seat 1.

In the present embodiment, travelling gear 6 and planetary gear 3 are arranged under tooth rest 4, central gear 2, travelling gear 6 Successively arranged along straight line with planetary gear 3, all external toothing relation between gear.

In the present embodiment, central gear 2 used with travelling gear 6 as gear, i.e., with identical modulus and the number of teeth, its Reference circle is also the same.And the gear ratio of planetary gear 3 and central gear 2 is 1:2, specially planetary gear 3 has 32 teeth, Central gear 2 and travelling gear 6 are all 64 teeth, and both reference radius ratios are also 1:2.

In the present embodiment, the rotating shaft (such as central shaft 54 of spray arm body 5) of planetary gear 3 and the central shaft 41 of tooth rest 4 Distance be that the revolution-radius R of spray arm body 5 is equal to 7 times of reference radius r of planetary gear 3.Specifically, the reference circle of planetary gear 3 half Footpath r is set as 17mm, therefore the revolution-radius R of spray arm body 5 is 119mm.

In the present embodiment, spray arm body 5 and tooth rest 4 can relatively rotate.The inner chamber 56 of spray arm body 5 and the water of tooth rest 4 Flow export 45 is communicated, and the inner chamber 44 of tooth rest 4 is connected with the inner chamber 56 of spray arm body 5.Eight spray-holes are opened up on spray arm body 5, Two spray-holes wherein in side wall (such as side wall of body 551) are thrust spray orifice 52 (driving spray orifice), and remaining six Individual opening up spray-hole is washing spray orifice 51.Whole spray-holes communicate with the inner chamber 56 of spray arm body 5, can eject washing Water.

In the present embodiment, the center of water inlet 31 of the inner chamber 56 of spray arm body 5 is provided with cylinder, referred to as newel 53.Phase Accordingly, a through hole is provided with the water export 45 of tooth rest 4.During installation, newel 53 will pass through the through hole, from gear The bottom of frame 4 is stretched out.Afterwards, the end of newel 53 is formed with connecting shaft such as splined shaft, the connecting shaft and planetary gear 3 Such as splined hole of axis hole 31 coordinates, and after the connecting shaft passes through axis hole 31, is pinned with snap ring 7, realizes spray arm body 5 and planetary gear 3 be connected.

In the present embodiment, the bottom surface of tooth rest 4 is additionally provided with power transmission shaft (such as gear jack-post), and the power transmission shaft passes to install Moving gear 6, the central shaft of the power transmission shaft are the rotary shaft of travelling gear 6.

In the present embodiment, whole spray orifices 51 on spray arm body 5 move along the elliptoid trajectory of prolate, such as Figure 14 institutes Show.Elliptical orbit line meets following parametric equation：X=R*cos (ang)+D*cos (ang), y=R*sin (ang)-D*sin (ang), wherein ang is the revolution angle of angle, i.e. spray arm body 5 that tooth rest 4 turns over；R is that the central shaft 54 of spray arm body 5 arrives tooth The revolution-radius 119mm of the distance of the central shaft 41 of wheel carrier 4, i.e. spray arm body 5；D is the central shaft 54 that spray orifice 51 arrives spray arm body 5 Distance, and D values are both greater than R.

In the present embodiment, the angle of two transverses is defined as the phase difference angle of two elliptical orbit lines 54, it etc. The 1/2 of angle between two spray orifices 51 and the line of central shaft 54 of spray arm body 5.It is specific as shown in figure 13, six washing spray orifices Angle between 51 is respectively 17.5 °, 17.5 °, 105 °, 17.5 ° and 17.5 °；Therefore as shown in figure 14, between six ellipses Phase difference angle be respectively 8.75 °, 8.75 °, 52.5 °, 8.75 ° and 8.75 °.

In the present embodiment, as shown in figure 14, two diagonal angles of rectangle washing zone are 70 °, phase on spray arm body 5 Be 140 ° to outer two washing spray orifices 51 phase difference angles, thus the major axis of two elliptical orbit lines can respectively with it is rectangular Two diagonal of shape washing zone overlap.For remaining four washing spray orifices 51, its corresponding four elliptical orbits line point Cloth is near diagonal.

In summary, the spray arm device 100 for dish-washing machine that the present embodiment provides can be completed to rectangle scrubbing section The covering washing in the diagonal region in domain, the region at four angles is included here, so as to eliminate washing dead band, is improved whole Body cleans effect.In addition, suitably adjusting the angle and distance of spray orifice 51, can also realize to square washing zone diagonal area The covering washing in domain.

In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show The description of example " or " some examples " etc. means specific features, structure, material or the feature for combining the embodiment or example description It is contained at least one embodiment or example of the present utility model.In this manual, to the schematic representation of above-mentioned term Necessarily it is directed to identical embodiment or example.Moreover, specific features, structure, material or the feature of description can be Combined in an appropriate manner in any one or more embodiments or example.In addition, in the case of not conflicting, this area Technical staff can be carried out the different embodiments or example and the feature of different embodiments or example described in this specification With reference to and combination.

Although embodiment of the present utility model has been shown and described above, it is to be understood that above-described embodiment is Exemplary, it is impossible to it is interpreted as to limitation of the present utility model, one of ordinary skill in the art is in the scope of the utility model It is interior above-described embodiment to be changed, changed, replaced and modification.

Claims

A kind of 1. spray arm device for dish-washing machine, it is characterised in that including：

Spray arm seat；

Central gear, the central gear are located at the water outlet of the spray arm seat, and the central gear and the spray arm seat Relative position fix；

Planetary gear, the planetary gear are connected with the central gear；

Tooth rest, the central gear and the planetary gear are rotatably arranged at below the tooth rest；

Spray arm body, the spray arm body are connected with being relatively fixed with the planetary gear, and the spray is communicated with the spray arm body The spray orifice and thrust spray orifice of arm seat, the thrust spray orifice are suitable to injection water and rotate the spray arm body.
2. the spray arm device according to claim 1 for dish-washing machine, it is characterised in that the spray arm device also includes passing Moving gear, the travelling gear are rotatably arranged on the tooth rest, and the travelling gear respectively with the central gear With the planetary gear external toothing.
3. the spray arm device according to claim 2 for dish-washing machine, it is characterised in that

The gear ratio of the central gear and the travelling gear is 1:1, the number of teeth of the planetary gear and the central gear Than for 1:2.
4. the spray arm device according to claim 2 for dish-washing machine, it is characterised in that the central gear, the biography Moving gear and the planetary gear are sequentially arranged along straight line.
5. the spray arm device according to claim 1 for dish-washing machine, it is characterised in that described planetary from walking around The ratio of speed and revolution rotating speed is 1:-1.
6. the spray arm device according to claim 1 for dish-washing machine, it is characterised in that the planetary reference circle Radius r is in the range of 10 millimeters to 20 millimeters, and the revolution-radius R of the spray arm body is in the range of 70 millimeters to 140 millimeters.
7. the spray arm device according to claim 1 for dish-washing machine, it is characterised in that formed on the spray arm body oriented The newel of lower extension, the newel are passed down through the tooth rest and the planetary gear and fixed by snap ring spacing.
8. the spray arm device for dish-washing machine according to any one of claim 1-7, it is characterised in that the spray arm body Include multiple spray arms including a spray arm or the spray arm body, multiple spray arms are in the angle of predetermined angular, and the spray arm includes：

Body, direction extension of the body towards the central shaft away from the spray arm body；

Support arm, the support arm connects the body, and the support arm connects with the body, the support arm including one or It is multiple.
9. the spray arm device according to claim 8 for dish-washing machine, it is characterised in that in away from the spray arm body The body is gradually reduced along the width dimensions on the direction of the central shaft of the spray arm body on the direction of mandrel.
10. the spray arm device according to claim 8 for dish-washing machine, it is characterised in that be all provided with each spray arm The body is related to be arranged symmetrically and along direction two support arms positioned opposite of the central shaft around the spray arm body.
11. the spray arm device according to claim 1 for dish-washing machine, it is characterised in that the central gear with it is described Planetary gear coordinates meets parametric equation for the trajectory for forming the spray orifice：X=R*cos (ang)+D*cos (ang), y =R*sin (ang)-D*sin (ang), wherein, ang is the angle that the tooth rest turns over, and R is the central shaft of the spray arm body To the distance of the central shaft of the tooth rest, D is distance of the spray orifice to the central shaft of the spray arm body, and D is not less than R.
12. the spray arm device according to claim 1 for dish-washing machine, it is characterised in that the central gear includes tooth Circle, formed with spaced apart multiple card convexs on the internal perisporium of the gear ring, the upper end of the periphery wall of the spray arm seat formed with The neck being adapted to multiple card convexs, the central gear and the spray arm seat clamping.
13. the spray arm device according to claim 12 for dish-washing machine, it is characterised in that the remote institute of the tooth rest One end of the central shaft of spray arm body is stated into there is the axle sleeve that extends downwardly, the upper end of the axle sleeve is formed with defining flange, the spray For the lower end inside of arm seat formed with the limiting section for the spacing axle sleeve, the defining flange is adapted to abut against the spray arm seat Upper edge and the lower end of the axle sleeve, which are stopped, supports the limiting section.
14. the spray arm device according to claim 7 for dish-washing machine, it is characterised in that outside the newel upper end Week formed with extending downwardly and the annular turn-up portion coaxial with the spray arm body, in the neighbouring spray arm body of the tooth rest One end of mandrel is formed with the annular slot for upwardly extending and being adapted to the annular turn-up portion, the spray arm body and the gear Frame clamping.
A kind of 15. dish-washing machine, it is characterised in that including：

Dish-washing machine body, the dish-washing machine body are interior formed with washing cavities；

Spray arm device, the spray arm device are located in the washing cavities, and the spray arm device is to appoint according in claim 1-14 The spray arm device for dish-washing machine described in one.