CN113907684B

CN113907684B - Spray set and cleaning equipment

Info

Publication number: CN113907684B
Application number: CN202111141438.8A
Authority: CN
Inventors: 孙少东; 林子豪; 韩素; 羿兰贵
Original assignee: Dreame Technology Suzhou Co ltd
Current assignee: Dreame Technology Suzhou Co ltd
Priority date: 2021-09-28
Filing date: 2021-09-28
Publication date: 2023-06-27
Anticipated expiration: 2041-09-28
Also published as: CN113907684A

Abstract

The invention provides a spray device and cleaning equipment, wherein the cleaning equipment comprises a spray device, and the spray device comprises a spray arm seat, a main spray arm rotatably arranged on the spray arm seat, a first bevel gear fixedly connected with the spray arm seat, an auxiliary spray arm rotatably arranged on the main spray arm and a second bevel gear connected with the auxiliary spray arm. By the arrangement, the auxiliary spray arm capable of rotating and stopping automatically is arranged on the main arm, so that dead angle areas of the dish washing machine can be washed, spraying tracks are denser, and washing rate of the dish washing machine is improved.

Description

Spray set and cleaning equipment

Technical Field

The invention relates to the field of cleaning equipment, in particular to a spraying device and cleaning equipment.

Background

The spray arm is used as the most important part in the dish washing machine, plays the most direct role in the dish washing machine cleaning function, most of the spray arms are fixed at the center of the cavity, the spray arm rotates around the center under the action of water flow, and the spray track is a plurality of concentric circles, so that the dish in the dish washing machine cavity can be directly sprayed by the spray arm only in the areas nearby the concentric circles, and most of the washing cavities of the dish washing machine are in regular polygons, so that the areas at all corners of the regular polygons and the areas spaced by the concentric circles are sprayed to the dish through the sputtering of the water flow, and the washing effect of the areas is poor.

Besides a dish washer, if other existing cleaning equipment cleans an inner cavity with a regular polygon in a cavity, the problem that the cleaning effect is poor because areas at all angles of the regular polygon cannot be directly sprayed by the spray arm in the spray arm water spraying process exists.

It is therefore necessary to provide a new spray device and cleaning apparatus to solve the above problems.

Disclosure of Invention

Therefore, the technical problem to be solved by the invention is that when the conventional spraying device sprays the regular polygon cleaning cavity, the areas at all corners of the cleaning cavity cannot be directly sprayed by the spray arm, so that the cleaning effect of the cleaning equipment is affected.

To this end, the invention provides a spray device and cleaning equipment, including a spray device, the spray device includes: a spray arm seat; the main spray arm is rotatably arranged on the spray arm seat; the first bevel gear is fixedly connected with the spray arm seat; the first bevel gear comprises n toothless areas which are uniformly distributed along the circumferential direction of the first bevel gear at intervals, a toothed area is formed between two adjacent toothless areas, a first teeth are arranged in any toothed area, n is a natural number which is more than or equal to 3, and a is a natural number which is more than or equal to 2; an auxiliary spray arm; the second bevel gear is connected with the auxiliary spray arm so that the auxiliary spray arm can be rotatably arranged on the main spray arm; the second bevel gear is provided with ma second teeth, and m is an integer greater than or equal to 1; the ratio of the total number of teeth of the first bevel gear to the total number of teeth of the second bevel gear is n: m; the second bevel gear is provided with a locking state abutting against the toothless area and a autorotation state meshed with the first teeth of the toothed area; at the central angle of

In the initial position of 0 degree, the main spray arm is intersected with the auxiliary spray arm, the second bevel gear is in a locking state, and the main spray arm is driven to rotate by driving force so as to drive the second bevel gear and the auxiliary spray arm to integrally revolve relative to the first bevel gear, so that the second bevel gear is forced to be sequentially switched between the locking state and the autorotation state along the circumferential direction of the first bevel gear; in the autorotation state, the second bevel gear drives the auxiliary spray arm to autorotate.

As a further improved technical scheme of the invention, the central angle is

In the initial position, the main spray arm is perpendicular to the auxiliary spray arm and is at +.>

At the position of the degree,the main spray arm is parallel to the auxiliary spray arm, and the auxiliary spray arm extends along the length direction of the main spray arm.

As a further improved technical scheme of the invention, a first locking tooth protruding radially outwards is arranged on the peripheral wall of the toothless area of the first bevel gear, and m second locking teeth protruding radially outwards are arranged on the peripheral wall of the second bevel gear; in the locked state, one of the second locking teeth abuts against one of the first locking teeth.

As a further improved technical scheme of the invention, the inner cavity of the main spray arm is communicated with the inner cavity of the auxiliary spray arm.

As a further improved technical scheme of the invention, the rotation axis of the first bevel gear coincides with the rotation axis of the main spray arm; the second bevel gear is connected with the auxiliary spray arm through a transmission mechanism, and the transmission mechanism is used for converting the rotation of the second bevel gear along a first direction into the rotation of a second direction perpendicular to the first direction; the transmission mechanism comprises: the first transmission piece and the second transmission piece are rotatably arranged outside the main spray arm, and the two ends of the first transmission piece are respectively fixed with the inner hole of the second bevel gear and the second transmission piece; the second transmission piece is fixedly connected with the auxiliary spray arm.

As a further improved technical scheme of the invention, the first transmission part is a first fixed shaft; the second transmission part comprises a third bevel gear and a fourth bevel gear, the third bevel gear is meshed with the fourth bevel gear, the gear ratio is 1, and the third bevel gear is sleeved and fixed on the first fixed shaft; the fourth bevel gear is connected with the auxiliary spray arm in an anti-rotation mode through a second fixed shaft, and the second fixed shaft is rotatably arranged on the main spray arm in a penetrating mode.

As a further improved technical scheme of the invention, the outer peripheral walls of the two ends of the first fixed shaft are respectively provided with at least one second clamping groove and one second bulge, and the inner holes of the second bevel gear and the third bevel gear are respectively provided with at least one second clamping groove and the other second bulge which extend along the radial direction; the second clamping grooves are clamped with the second protrusions in a one-to-one correspondence manner; the end faces of the two ends of the first fixed shaft are respectively provided with a first end cover, and the first end covers are abutted against the end faces of the corresponding bevel gears; and/or the fourth bevel gear is positioned between the third bevel gear and the auxiliary spray arm.

As a further improved technical scheme of the invention, a plane perpendicular to the axis of the main spray arm is taken as a projection plane; the main spray arm and the auxiliary spray arm are respectively provided with a first installation part and a second installation part, and projections of the first installation part and the second installation part on the projection surface are overlapped in a locking state; the surfaces of the first installation part and the second installation part, which face each other, are respectively provided with a first installation opening and a second installation opening; the second mounting port is rotatably arranged on the first mounting port, so that the inner cavity of the main spray arm is communicated with the inner cavity of the auxiliary spray arm; the second fixed shaft is sealed and rotatably arranged on the first mounting opening of the first mounting part and the second mounting opening of the second mounting part in a penetrating manner; the transmission mechanism is positioned outside the main spray arm.

As a further improved technical scheme of the invention, a first annular boss is arranged on the peripheral wall of the second fixed shaft, a third mounting hole for accommodating the second fixed shaft to pass through is arranged on the main spray arm in the first mounting hole, a second annular boss is arranged on the periphery of the third mounting hole, and the first annular boss and the second annular boss are both positioned in the inner cavity of the auxiliary spray arm; one of the first annular boss and the second annular boss is provided with an annular groove, and the other one of the first annular boss and the second annular boss is provided with an annular sealing protrusion which is suitable for being in sealing connection with the annular groove.

As a further improved technical scheme of the invention, the outer peripheral walls at the two ends of the second fixed shaft are respectively provided with at least one third clamping groove and one third bulge, and the inner holes of the fourth bevel gear and the auxiliary spray arm are provided with at least one third clamping groove and the other third bulge which extend along the radial direction; the third clamping grooves are clamped with the third protrusions in a one-to-one correspondence manner; the end faces of the two ends of the second fixed shaft are respectively provided with a first end cover, and the first end covers are abutted to the end faces of the fourth bevel gear and the auxiliary spray arm.

As a further improved technical scheme of the invention, the spray arm seat is provided with a hollow inner cavity, and the main spray arm comprises a mounting section and a spray section vertically fixed on the mounting section; the liquid spraying section is provided with a plurality of first nozzles; the mounting section is rotatably arranged on the hollow inner cavity of the spray arm seat in a penetrating way, and the first bevel gear is coaxially fixed on the outer wall of the spray arm seat; the transmission mechanism and the auxiliary spray arm are both rotatably arranged on the spray section.

As a further improved technical scheme of the invention, the first end face, close to one side of the liquid spraying section, of the spray arm seat is provided with one of a first bulge and a first clamping groove, the first surface, facing one side of the first end face, of the first bevel gear is provided with the other one of the first bulge and the first clamping groove, and the first bulge is at least one; the first surface of the first bevel gear is abutted to the first end face, and the first protrusions are in one-to-one corresponding clamping fit with the first clamping grooves.

As a further improved technical scheme of the invention, a first annular flange and a second annular flange which are radially protruded and distributed at intervals are arranged on the peripheral wall of the mounting section; a third annular flange is arranged on the wall surface of the hollow inner cavity of the spray arm seat; at least one fourth flange protruding radially is arranged on the peripheral wall of the spray arm seat; the first bevel gear is provided with an annular step surface positioned on the inner side of the second tooth, and the annular step surface and the first surface are distributed in a back-to-back way; the first annular flange is positioned outside the spray arm seat and can be abutted against the annular step surface; the second annular flange is positioned outside the spray arm seat, and the upper surface of the second annular flange is in abutting connection with the lower surface of the third annular flange; the fourth flange is connected to the outer base.

The spraying device and the cleaning equipment of the invention also comprise the cleaning equipment, and the cleaning equipment comprises: the box body is provided with a positive n-shaped inner cavity; and the rotating axis of the main spray arm of the spray device is coincident with the central line of the regular n-shaped inner cavity.

Compared with the prior art, the spraying device is provided with the main spraying arm pivoted on the spraying arm seat, the auxiliary spraying arm pivoted at one end of the main spraying arm, and the second conical tooth coaxially rotated with the auxiliary spraying arm, and the second conical tooth is meshed with the first conical tooth provided with the toothless area and the toothed area to control the movement and stop of the auxiliary spraying arm. The first bevel gear is fixedly connected with the spray arm seat and sleeved on the periphery of the main spray arm. The auxiliary spray arm capable of rotating and stopping automatically is arranged on the main arm, and each stopping stage is equivalent to initializing the auxiliary spray arm, so that continuous accumulation of motion deviation is avoided, and the auxiliary spray arm is stable and reliable.

The invention is applied to the cleaning equipment, so that dead angle areas of the cleaning equipment can be washed, spraying tracks are more dense, and the cleaning rate of the cleaning equipment is improved.

Drawings

FIG. 1 is a schematic perspective view of an embodiment of a spray device and cleaning apparatus of the present invention;

FIG. 2 is a schematic perspective view of the other angle of FIG. 1;

FIG. 3 is an exploded perspective view of FIG. 1;

FIG. 4 is an exploded perspective view of a portion of the structure of FIG. 3 at a further and alternative angle;

FIG. 5 is a schematic top view of FIG. 1;

FIG. 6 is a schematic cross-sectional view taken along line A-A of FIG. 5;

FIG. 7 is a schematic top view of a main spray arm of the present invention;

fig. 8 is a schematic front view showing the engagement of the respective bevel gears with the respective fixed shafts when the fourth bevel gear is mounted on the lower end of the third bevel gear in the present invention.

Fig. 9 is a schematic front view showing the engagement of the respective bevel gears with the respective fixed shafts when the fourth bevel gear is mounted on the upper end of the third bevel gear in the present invention.

FIG. 10 is a schematic perspective view of a first transmission member of the present invention;

FIG. 11 is a schematic perspective view of a first end cap of the present invention;

FIG. 12 is a schematic top view of the first transmission member, second bevel gear, and first end cap of the present invention;

FIG. 13 is a schematic cross-sectional view of FIG. 12 taken along line B-B;

FIG. 14 is a perspective view of a second stationary shaft according to the present invention;

FIG. 15 is a schematic perspective view of the first locking tooth of the first bevel gear mated with the second locking tooth of the second bevel gear in the present invention;

FIG. 16 is a schematic perspective view of the first tooth of the first bevel gear mated with the second tooth of the second bevel gear in the present invention;

FIG. 17 is a schematic perspective view of a first locking tooth of a first bevel gear in combination with an incomplete tooth portion of a second bevel gear in another embodiment of the invention;

FIG. 18 is a schematic perspective view of a first tooth of a first bevel gear mated with a second tooth of a second bevel gear in another embodiment of the invention;

FIG. 19 is a schematic perspective view of a second bevel gear of the present invention;

FIG. 20 is a schematic top view of a first bevel gear of the present invention;

FIG. 21 is a schematic bottom view of the first bevel gear of the present invention;

FIG. 22 is a schematic perspective view of a spray arm base of the present invention;

FIG. 23 is an enlarged partial schematic view of FIG. 3;

FIG. 24 is an enlarged partial schematic view at C in FIG. 6;

FIG. 25 is a partially enlarged schematic illustration of FIG. 6 at D;

FIG. 26 is an enlarged partial schematic view of FIG. 7;

FIG. 27 is an enlarged partial schematic view of FIG. 13;

FIG. 28 is an enlarged partial schematic view of FIG. 10;

FIG. 29 is a diagram showing the movement of the spray device when the fourth bevel gear of the present invention is mounted on the upper end of the third bevel gear;

FIG. 30 is a diagram showing the movement direction of the spray device when the fourth bevel gear of the present invention is mounted on the lower end of the third bevel gear;

FIG. 31 is a spray trajectory of the secondary spray arm of the present invention;

FIG. 32 is a spray trajectory of the present invention in combination with a primary spray arm and a secondary spray arm;

fig. 33 to 39 are motion diagrams of the sprinkler of the present invention operating for one cycle.

Reference numerals: a spray arm seat-1; hollow inner cavity-10; a first end face-11; a first protrusion-111; a first card slot-112; a third annular flange-12; a fourth flange-14; a main spray arm-2; a mounting section-21; a first annular flange-211; a second annular flange-212; a water inlet cavity-213; a liquid spraying section-22; a first spout-221; a first mounting portion-222; a first mounting port-2221; a third mounting port-2222; a second annular boss-2223; annular seal groove-2224; a first chamber-223; driving the spray hole-224; a housing chamber-23; a mounting base-25; a through hole-251; a connecting groove-252; a secondary spray arm-3; a second mounting portion-31; a second mounting port-311; a seal-312; a second nozzle hole-32; a second chamber-33; a first bevel gear-41; a first surface-410; toothless zone-412; first locking tooth-4121; toothed region-411; first tooth-4111; annular step surface-413; a second bevel gear-42; second tooth-4211; second locking tooth-4221; a transmission mechanism-4; a first transmission member-50; a second card slot-501; a second bump-502; a first end cap-503; first post-5030; first clasp-5031; first groove-504; first snap groove-5041; first opening-5042; a limiting block-505; a second transmission member 40; third bevel gear-43; fourth bevel gear-44; a second fixed shaft-60; a third clamping groove-601; third bump-602; a second end cap-603; second post-6030; second clasp-6031; a second groove-604; second snap groove-6041; second opening-6042; second annular boss-605.

Detailed Description

Exemplary embodiments of the present invention will be described in detail below with reference to the accompanying drawings. If there are several specific embodiments, the features in these embodiments can be combined with each other without conflict. When the description refers to the accompanying drawings, the same numbers in different drawings denote the same or similar elements, unless otherwise specified. What is described in the following exemplary embodiments does not represent all embodiments consistent with the invention; rather, they are merely examples of apparatus, articles, and/or methods that are consistent with aspects of the invention as set forth in the claims.

The terminology used in the present invention is for the purpose of describing particular embodiments only and is not intended to limit the scope of the present invention. As used in the specification and claims of the present invention, the singular forms "a," "an," or "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It should be understood that words such as "first," "second," and the like, used in the description and in the claims of the present invention, do not denote any order, quantity, or importance, but rather are names used to distinguish one feature from another. Likewise, the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. Unless otherwise indicated, the terms "front," "rear," "upper," "lower," and the like are used herein for convenience of description and are not limited to a particular location or to a spatial orientation. The word "comprising" or "comprises", and the like, is an open-ended expression, meaning that elements appearing before "comprising" or "including", encompass the elements appearing after "comprising" or "including", and equivalents thereof, and not exclude that elements appearing before "comprising" or "including", may also include other elements. In the present invention, if a plurality of the above-mentioned components are present, the meaning of the above-mentioned components is two or more.

Example 1

Referring to fig. 1 to 39, the present embodiment provides a spray device, which includes a spray arm base 1, a main spray arm 2 rotatably provided on the spray arm base 1, a first bevel gear 41 fixedly connected with the spray arm base 1, a sub-spray arm 3 rotatably provided on the main spray arm 2, and a second bevel gear 42 connected with the sub-spray arm 3.

Referring to fig. 15 to 18, the first bevel gear 41 includes n toothless regions 412 uniformly and intermittently distributed along the circumferential direction thereof, a toothed region 411 is formed between two adjacent toothless regions 412, a first teeth 4111 are disposed in any toothed region 411, n is a natural number greater than or equal to 3, and a is a natural number greater than or equal to 2.

The second bevel gear 42 is provided with ma second teeth 4211, m being an integer greater than or equal to 1. The ratio of the total number of teeth of the first bevel gear 41 to the total number of teeth of the second bevel gear 42 is n: m.

In the present embodiment, since m is 2, the second bevel gear 42 is provided with 2a second teeth 4211 and the ratio of the total number of teeth of the first bevel gear 41 to the total number of teeth of the second bevel gear 42 is n:2. so set up, make spray set whole highly suitable, can not occupy the too big inner chamber space of cleaning equipment, make the transmission part more stable when the motion simultaneously, extension gear's life.

The second bevel gear 42 has a locked state in abutment with the toothless section 412 and a rotated state in engagement with the first teeth 4111 of the toothed section 411.

At the central angle of

In an initial position of 0 degrees, the main spray arm 2 intersects with the auxiliary spray arm 3, the second bevel gear 42 is in a locking state, the main spray arm 2 is driven to rotate by driving force so as to drive the second bevel gear 42 and the auxiliary spray arm 3 to integrally revolve relative to the first bevel gear 41, and the second bevel gear 42 is forced to sequentially switch between the locking state and the rotation state along the circumferential direction of the first bevel gear 41; in the rotation state, the second bevel gear 42 drives the auxiliary spray arm 3 to rotate.

In this embodiment, n is 4, that is, there are 4 periods, that is, the central angle in one period is 90 degrees, in the initial position of 0 degrees, the main spray arm 2 is perpendicular to the auxiliary spray arm 3, the second bevel gear 42 is in a locked state, and in the position of 45 degrees, the main spray arm 2 is parallel to the auxiliary spray arm 3, and the auxiliary spray arm 3 extends along the length direction of the main spray arm 2.

Referring to fig. 15 and 16, in the present embodiment, a first locking tooth 4121 protruding radially outwards is provided on the outer peripheral wall of the toothless area 412 of the first bevel gear 41, and m second locking teeth 4221 protruding radially outwards are provided on the outer peripheral wall of the second bevel gear 42; in the locked state, one of the second locking teeth 4221 abuts one of the first locking teeth 4121.

Referring to fig. 17 and 18, in other embodiments, a first locking tooth 4121 protrudes upward from a tapered surface of the toothless area 412 of the first bevel gear 41, and the second bevel gear 42 is provided with m incomplete teeth 4220 that mate with the first locking tooth 4121, and in the locked state, one of the second locking teeth 4221 abuts against one of the incomplete teeth 4220.

The first bevel gear 41 is coaxially fixed on the outer wall of the spray arm seat 1, and the rotation axis of the first bevel gear 41 coincides with the rotation axis of the main spray arm 2; the second bevel gear 42 is connected with the auxiliary spray arm 3 through a transmission mechanism 4, and the transmission mechanism 4 is located outside the main spray arm and is used for converting the rotation of the second bevel gear 42 along a first direction into the rotation of the second bevel gear along a second direction perpendicular to the first direction.

Referring to fig. 3, the transmission mechanism 4 includes a first transmission member 50 and a second transmission member 40, where the first transmission member 50 is rotatably disposed outside the main spray arm 2, two ends of the first transmission member 50 are respectively fixed to the inner hole of the second bevel gear 42 and the second transmission member 40, and the second transmission member 40 is fixedly connected with the auxiliary spray arm 3. In this embodiment, the first transmission member 50 is a first fixed shaft, and the second transmission member 40 includes a third bevel gear 43 and a fourth bevel gear 44. In other embodiments, the transmission mechanism 4 may be a worm gear or other transmission component, specifically, the first transmission member 50 is a worm, and the second transmission member 40 is a worm wheel.

Referring to fig. 4, in this embodiment, the second bevel gear 42 and the third bevel gear 43 are sleeved and fixed on the first fixed shaft, at least one second clamping groove 501 and one second protrusion 502 are respectively disposed on the outer peripheral walls of two ends of the first fixed shaft, at least one second clamping groove 501 and the other second protrusion 502 extending along the radial direction are disposed on the inner holes of the second bevel gear 42 and the third bevel gear 43, and the second clamping grooves 501 are in one-to-one corresponding clamping connection with the second protrusions 502.

As shown in fig. 10 to 13, the end surfaces of the two ends of the first fixing shaft are respectively provided with a first end cover 503, and the first end covers 503 are abutted against the end surfaces of the corresponding bevel gears. The first end cover 503 is provided with a first protruding column 5030, and the first protruding column 5030 is provided with first buckles 5031 uniformly distributed at intervals; a first groove 504 is formed in the end face of the first fixed shaft, and a first buckling groove 5041 which is recessed in the radial direction and a first opening 5042 which is communicated with the first buckling groove 5041 are formed in the inner wall of the first groove 504; when the bevel gear is mounted, the first buckle 5031 is embedded into the first notch 5042, and the first buckle 5031 is clamped in the first buckle groove 5041 by rotating the first end cover 503, so that the first end cover 503 is abutted against the outer end face of the bevel gear. The first fixed shaft is fixedly connected with the second bevel gear 42 and the third bevel gear 43, so that the first fixed shaft, the second bevel gear 42 and the third bevel gear 43 are coaxially rotated, and the axial direction and the radial direction of the first fixed shaft are limited.

Referring to fig. 3, the bottom wall of one side of the main spray arm 2 is recessed upward and connected with the peripheral wall thereof to form a containing cavity 23 with a downward opening, and the containing cavity 23 and the auxiliary spray arm 3 are disposed on the same side of the main spray arm 2. Protruding downwards from the top wall of the housing cavity 23, two mounting seats 25 are provided at a distance from each other. The center of the two mounting seats 25 is respectively provided with two through holes 251 matched with the first fixed shaft, at least one of the two mounting seats 25 is provided with a connecting groove 252, the first fixed shaft is outwards extended from the peripheral wall of the first fixed shaft to be provided with at least one annular limiting block 505, the first fixed shaft penetrates through the two through holes 251 and is connected to the main spray arm 2 through the matching of the connecting groove 252 and the limiting block 505, and the arrangement is that the axial direction and the radial direction of the first fixed shaft are limited again, so that the first fixed shaft is more stable in the transmission process.

In this embodiment, the third bevel gear 43 is meshed with the fourth bevel gear 44, and has a gear ratio of 1, the fourth bevel gear 44 is connected with the auxiliary boom 3 in an anti-rotation manner by a second fixing shaft 60, and the second fixing shaft 60 is rotatably inserted through the main boom 2.

Referring to fig. 3, 4 and 12, the outer peripheral walls of the two ends of the second fixing shaft 60 are respectively provided with at least one third clamping groove 601 and one third protrusion 602, and the inner holes of the fourth bevel gear 44 and the auxiliary spray arm 3 are provided with at least one third clamping groove 601 and the other third protrusion 602 extending along the radial direction; the third clamping grooves 601 are clamped with the third protrusions 602 in a one-to-one correspondence.

The end surfaces of the two ends of the second fixed shaft 60 are respectively provided with a second end cover 603, and the second end covers 603 are abutted against the end surfaces of the fourth bevel gear 44 and the auxiliary spray arm 3. The second end cover 603 is provided with second protruding columns 6030, and second buckles 6031 which are uniformly distributed at intervals are arranged on the second protruding columns 6030; a second groove 604 is formed on the end surface of the second fixing shaft 60, and a radially recessed second fastening groove 6041 and a second opening 6042 communicated with the second fastening groove 6041 are formed on the inner wall of the second groove 604; during installation, the second buckle 6031 is embedded into the second notch 6042, and the second buckle 6031 is clamped in the second buckle groove 6041 by rotating the second end cover 603, and the second end cover 603 is abutted against the outer end faces of the fourth bevel gear 44 and the auxiliary spray arm 3, so that the second fixing shaft 60, the fourth bevel gear 44 and the auxiliary spray arm 3 realize coaxial rotation.

Referring to fig. 8 and 29, in the present embodiment, the third bevel gear 43 is mounted on the upper end of the fourth bevel gear 44, and the rotation direction of the main spray arm 2 is opposite to the rotation direction of the sub spray arm 3;

referring to fig. 9 and 30, in other embodiments, the third bevel gear 43 may be mounted on the lower end of the fourth bevel gear 44, and the rotation direction of the main spray arm 2 and the rotation direction of the sub spray arm 3 are the same.

Referring to fig. 3, the main spray arm 2 includes a mounting section 21 and a spray section 22 vertically fixed on the mounting section 21. The spray arm seat 1 is provided with a hollow inner cavity 10, the mounting section 21 is rotatably arranged on the hollow inner cavity 10 of the spray arm seat 1 in a penetrating manner, and the transmission mechanism 4 and the auxiliary spray arm 3 are both rotatably arranged on the spray section 22.

Referring to fig. 1, 23 and 26, the main spray arm 2 and the sub-spray arm 3 have a first mounting portion 222 and a second mounting portion 31, respectively. The projection of the first mounting portion 222 and the second mounting portion 31 on the projection plane in the locked state overlaps with a plane perpendicular to the axis of the main boom 2 as the projection plane.

Referring to fig. 23 to 26, the first mounting portion 222 and the second mounting portion 31 are provided with a first mounting opening 2221 and a second mounting opening 311, respectively, on the surfaces facing each other, and the second mounting opening 311 is rotatably provided on the first mounting opening 2221, so that the inner cavity of the main spray arm 2 is communicated with the inner cavity of the sub spray arm 3. One end of the first mounting opening 2221 and the second mounting opening 311 is provided with an annular sealing groove 2224, the other end is inserted into the annular sealing groove 2224, the outer periphery of the annular sealing groove is provided with a sealing part 312, and the sealing part 312 is abutted against the inner wall of the annular sealing groove 2224, so that water flow is prevented from overflowing from the mounting opening.

The second fixing shaft 60 is hermetically and rotatably inserted into the first mounting hole 2221 of the first mounting part 222 and the second mounting hole 311 of the second mounting part 31; the outer peripheral wall of the second fixed shaft 60 is provided with a first annular boss 605, the main spray arm 2 in the first mounting port 2221 is provided with a third mounting port 2222 for accommodating the second fixed shaft 60 to pass through, the outer periphery of the third mounting port 2222 is provided with a second annular boss 2223, and the first annular boss 605 and the second annular boss 2223 are both positioned in the inner cavity of the auxiliary spray arm 3.

One of the first annular boss 605 and the second annular boss 2223 is provided with an annular groove, and the other is provided with an annular sealing protrusion which is suitable for being in sealing connection with the annular groove. So arranged, liquid is prevented from flowing to the transmission mechanism 4, affecting the rotation of the bevel gear.

Referring to fig. 6, 21 and 22, one of a first protrusion 111 and a first slot 112 is disposed on the first end surface 11 of the spray arm base 1 near the spray section 22, the other of the first protrusion 111 and the first slot 112 is disposed on the first surface 410 of the first bevel gear 41 facing the first end surface 11, and at least one of the first slot 111 and the first protrusion 112 is disposed.

The first surface 410 of the first bevel gear 41 abuts against the first end surface 11, and the first protrusions 111 are in one-to-one corresponding clamping fit with the first clamping grooves 112.

Referring to fig. 20, 21 and 25, the outer peripheral wall of the mounting section 21 is provided with a first annular flange 211 and a second annular flange 212 which are radially protruded and spaced apart. The wall surface of the hollow inner cavity of the spray arm seat 1 is provided with a third annular flange 12, and the peripheral wall of the spray arm seat 1 is provided with at least one fourth flange 14 protruding radially. The first bevel gear 41 is provided with an annular step surface 413 located on the inner side of the second tooth 4211, and the annular step surface 413 is distributed opposite to the first surface 410.

The first annular flange 211 is located outside the spray arm seat 1 and can be abutted against the annular step surface 413; the second annular flange 212 is located outside the spray arm seat 1, and the upper surface of the second annular flange is abutted against the lower surface of the third annular flange 12; the fourth flange 14 is connected to an external base.

Referring to fig. 1, 31 and 32, the auxiliary spray arm 3 is pivotally disposed at one end of the main spray arm 2, and the rotation axis of the auxiliary spray arm 3 is parallel to the rotation axis of the main spray arm 2, so that the spray arms of the main spray arm 2 and the auxiliary spray arm 3 do not interfere with each other during rotation. The main spray arm 2 rotates around the central axis of the spray arm seat 1, the rotation track of the main spray arm 2 is circular, the auxiliary spray arm 3 rotates around the central axis of the second fixed shaft 60, and at least part of orthographic projection of the area covered by the rotation track of the auxiliary spray arm on the horizontal plane exceeds projection of the area covered by the rotation track of the main spray arm 2 on the horizontal plane.

Referring to fig. 5 and 6, the main spray arm 2 is provided with a first chamber 223 and a plurality of first spray holes 221 communicated with the first chamber 223, and in this embodiment, the first spray holes 221 are arranged on the upper surface of the main spray arm 2 at intervals. In other embodiments, the first nozzle holes 221 may be spaced apart on the lower surface of the main spray arm 2, or may be spaced apart on both the upper and lower surfaces of the main spray arm 2. Two driving spray holes 224 are respectively arranged at two ends of the upper surface of the main spray arm 2. The auxiliary spray arm 3 is provided with a second chamber 33, the second chamber 33 is communicated with the first chamber 223, and the auxiliary spray arm 3 is provided with a plurality of second spray holes 32 communicated with the second chamber 33. In the present embodiment, the second nozzle holes 32 are arranged at intervals on the upper surface of the sub-arm 3, and in other embodiments, the second nozzle holes 32 may be arranged at intervals on the lower surface of the sub-arm 3, or on both the upper surface and the lower surface of the sub-arm 3.

The installation section 21 of the main spray arm 2 is provided with a water inlet cavity 213 with a downward opening, the water inlet cavity 213 is communicated with the first cavity 223, high-pressure liquid pumped by the cleaning equipment enters the first cavity 223 from the water inlet cavity 213 of the main spray arm 2, a part of water is sprayed out through a first spray hole 221 and a driving spray hole 224 on the main spray arm 2, a part of water enters a second cavity 33 of the auxiliary spray arm 3, and the water is sprayed out through a second spray hole 32 on the auxiliary spray arm 3.

Example 2

The embodiment provides cleaning equipment, which comprises a spraying device and a box body with a regular n-shaped inner cavity, wherein the rotation axis of a main spraying arm 2 of the spraying device is coincident with the central line of the regular n-shaped inner cavity. In this embodiment, the washing device is a dishwasher with a square interior, and in other embodiments, the cleaning device may be another cleaning device.

When the main spray arm 2 and the auxiliary spray arm 3 are perpendicular in the initial position, when the main spray arm 2 drives the auxiliary spray arm 3 to revolve clockwise and approach to a dead angle position of the inner cavity of the dish washer, the second bevel gear 42 just revolves to a position where the second tooth 4211 of the second bevel gear is about to be meshed with the first tooth 4111 of the first bevel gear, when the second tooth 4211 starts to mesh with the first tooth 4111, the second bevel gear 42 starts to rotate and drives the transmission mechanism 4 fixedly connected with the second bevel gear to rotate, so that the auxiliary spray arm 3 fixedly connected with the transmission mechanism 4 is driven to rotate anticlockwise until the second locking tooth 4221 starts to be abutted against the first locking tooth 4121, the second tooth 4211 is separated from the toothless area 412, the main spray arm 2 just leaves the dead angle position, and one period is finished.

In this embodiment, when the dishwasher pumps water, the main spray arm 2 rotates under the action of the water flow driving the spray holes 224, so that the circular area with the length of the main spray arm 2 as the diameter can be covered, and for four dead angle positions of the square cavity of the dishwasher, the auxiliary spray arm 3 can be rotated and stretched out when approaching the dead angle position, when the main spray arm 2 reaches the dead angle position, the auxiliary spray arm 3 just stretches to the dead angle position where the main spray arm 2 cannot spray, and the auxiliary spray arm 3 is rotated and retracted after leaving the dead angle position, and stops rotating, thus completing one cycle. As the main boom 2 continues to approach the next dead angle position. The sub-boom 3 is "rotated out" and then "rotated in" as in the previous cycle. Therefore, the tracks sprayed by the main spray arm 2 and the auxiliary spray arm 3 cover the whole square cavity, dead-angle-free full-coverage spraying is realized, and in the moving process, the main spray arm 2 rotates, the auxiliary spray arm 3 rotates and revolves, so that the spraying tracks are denser, and the cleaning effect is better.

Specifically, referring to fig. 33 to 39, when the main boom 2 rotates clockwise at 0 ° to 22.5 °, the sub boom 3 is perpendicular to the main boom 2 and remains relatively stationary, the sub boom revolves along with the main boom, when the main boom 2 rotates to 22.5 ° to approach the dead angle position, the sub boom 3 starts to rotate counterclockwise, and when the main boom 2 rotates to 45 °, the sub boom 3 completely "rotates out" to reach the dead angle position. The main spray arm 2 continues to rotate, the auxiliary spray arm 3 also continues to rotate anticlockwise, and when the main spray arm 2 rotates to 67.5 degrees, the auxiliary spray arm 3 completely rotates and retracts. And then stops not rotating until the next cycle.

In summary, in the spraying device of the present invention, the main spray arm 2 is pivotally disposed on the spray arm seat 1, the auxiliary spray arm 3 is pivotally disposed at one end of the main spray arm 2, and the second conical teeth 42 coaxially rotating with the auxiliary spray arm 3 are disposed, and the second conical teeth 42 are engaged with the first conical teeth 41 having the toothless area 412 and the toothed area 411, so as to control the movement and stop of the auxiliary spray arm 3. The first bevel gear 41 is fixedly connected with the spray arm seat 1 and sleeved on the periphery of the main spray arm 2. Namely, the auxiliary spray arm 3 capable of rotating and stopping automatically is arranged on the main arm 2, and each stopping stage is equivalent to initializing the auxiliary spray arm, so that continuous accumulation of motion deviation is avoided, and the auxiliary spray arm is stable and reliable.

The above embodiments are only for illustrating the technical solutions described in the present invention and should not be construed as limiting the present invention, and the present invention should be understood based on the description of the directivity of the present invention such as "front", "rear", "left", "right", "upper", "lower", etc., and although the present invention has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that the present invention can be modified or substituted by those skilled in the art without departing from the spirit and scope of the present invention and all the modifications thereof should be covered in the scope of the claims of the present invention.

Claims

1. A spray device, comprising:

a spray arm seat (1);

the main spray arm (2) is rotatably arranged on the spray arm seat (1);

the first bevel gear (41) is fixedly connected with the spray arm seat (1); the first bevel gear (41) comprises n toothless areas (412) which are uniformly distributed along the circumferential direction at intervals, a toothed area (411) is formed between two adjacent toothless areas (412), a first teeth (4111) are arranged in any toothed area (411), n is a natural number which is more than or equal to 3, and a is a natural number which is more than or equal to 2;

a sub-spray arm (3);

a second bevel gear (42) connected with the auxiliary spray arm (3) so that the auxiliary spray arm (3) is rotatably arranged on the main spray arm (2); the second bevel gear (42) is provided with ma second teeth (4211), and m is an integer greater than or equal to 1;

the ratio of the total number of teeth of the first bevel gear (41) to the total number of teeth of the second bevel gear (42) is n: m;

the second bevel gear (42) has a locked state abutting against the toothless section (412) and a rotation state meshing with the first teeth (4111) of the toothed section (411);

at the central angle of

In an initial position of 0 degrees, the main spray arm (2) intersects the auxiliary spray arm (3), the second bevel gear (42) is in a locking state, and the main spray arm (2) is subjected toThe driving force drives the second bevel gear (42) and the auxiliary spray arm (3) to revolve integrally relative to the first bevel gear (41), so that the second bevel gear (42) is forced to be sequentially switched between the locking state and the autorotation state along the circumferential direction of the first bevel gear (41); in the autorotation state, the second bevel gear (42) drives the auxiliary spray arm (3) to autorotate.

2. The spray device of claim 1 wherein the central angle is

In the initial position, the primary spray arm (2) is perpendicular to the secondary spray arm (3) and is at +.>

At the position, the main spray arm (2) is parallel to the auxiliary spray arm (3), and the auxiliary spray arm (3) extends along the length direction of the main spray arm (2).

3. The spraying device according to claim 1, characterized in that a first locking tooth (4121) protruding radially outwards is provided on the outer peripheral wall of the toothless zone (412) of the first bevel gear (41), and m second locking teeth (4221) protruding radially outwards are provided on the outer peripheral wall of the second bevel gear (42);

in the locked state, one of the second locking teeth (4221) abuts one of the first locking teeth (4121).

4. The spraying device according to claim 1, characterized in that the inner cavity of the primary spray arm (2) communicates with the inner cavity of the secondary spray arm (3).

5. Spray device according to any of claims 1-4, characterized in that the axis of rotation of the first bevel gear (41) coincides with the axis of rotation of the main spray arm (2);

the second bevel gear (42) is connected with the auxiliary spray arm (3) through a transmission mechanism (4), and the transmission mechanism (4) is used for converting the rotation of the second bevel gear (42) along a first direction into the rotation of a second direction perpendicular to the first direction;

the transmission mechanism (4) comprises:

the first transmission piece (50) and the second transmission piece (40), the first transmission piece (50) is rotatably arranged outside the main spray arm (2), and the two ends of the first transmission piece are respectively fixed with the inner hole of the second bevel gear (42) and the second transmission piece (40); the second transmission part (40) is fixedly connected with the auxiliary spray arm (3).

6. The spraying device according to claim 5, characterized in that the first transmission member (50) is a first fixed shaft;

the second transmission part (40) comprises a third bevel gear (43) and a fourth bevel gear (44), the third bevel gear (43) is meshed with the fourth bevel gear (44) and has a gear ratio of 1, and the third bevel gear (43) is sleeved and fixed on the first fixed shaft;

the fourth bevel gear (44) is connected with the auxiliary spray arm (3) in an anti-rotation mode through a second fixed shaft (60), and the second fixed shaft (60) is rotatably arranged on the main spray arm (2) in a penetrating mode.

7. The spraying device according to claim 6, wherein the outer peripheral walls of the two ends of the first fixed shaft are respectively provided with one of at least one second clamping groove (501) and a second bulge (502), and the inner holes of the second bevel gear (42) and the third bevel gear (43) are respectively provided with the other of at least one second clamping groove (501) and the second bulge (502) which extend along the radial direction; the second clamping grooves (501) are clamped with the second protrusions (502) in a one-to-one correspondence manner;

the end faces of the two ends of the first fixed shaft are respectively provided with a first end cover (503), and the first end covers (503) are abutted against the end faces of the corresponding bevel gears; and/or the fourth bevel gear (44) is located between the third bevel gear (43) and the secondary spray arm (3).

8. Spray device according to claim 6, characterized in that a plane perpendicular to the axis of the main spray arm (2) is taken as projection plane;

the main spray arm (2) and the auxiliary spray arm (3) are respectively provided with a first installation part (222) and a second installation part (31), and in a locking state, projections of the first installation part (222) and the second installation part (31) on the projection surface are overlapped;

the surfaces of the first mounting part (222) and the second mounting part (31) which face each other are respectively provided with a first mounting opening (2221) and a second mounting opening (311); the second mounting port (311) is rotatably arranged on the first mounting port (2221) so as to enable the inner cavity of the main spray arm (2) to be communicated with the inner cavity of the auxiliary spray arm (3);

the second fixing shaft (60) is hermetically and rotatably arranged on a first mounting opening (2221) of the first mounting part (222) and a second mounting opening (311) of the second mounting part (31) in a penetrating manner; the transmission mechanism (4) is positioned outside the main spray arm (2).

9. The spraying device according to claim 8, wherein a first annular boss (605) is arranged on the outer peripheral wall of the second fixed shaft (60), a third mounting hole (2222) for accommodating the second fixed shaft (60) to pass through is arranged on the main spray arm (2) in the first mounting hole (2221), a second annular boss (2223) is arranged on the outer periphery of the third mounting hole (2222), and the first annular boss (605) and the second annular boss (2223) are both positioned in the inner cavity of the auxiliary spray arm (3);

one of the first annular boss (605) and the second annular boss (2223) is provided with an annular groove, and the other is provided with an annular sealing protrusion which is suitable for being in sealing connection with the annular groove.

10. The spraying device according to claim 8, wherein the outer peripheral walls of the two ends of the second fixed shaft (60) are respectively provided with at least one third clamping groove (601) and one third protrusion (602), and the inner holes of the fourth bevel gear (44) and the auxiliary spraying arm (3) are respectively provided with at least one third clamping groove (601) and the other third protrusion (602) which extend along the radial direction; the third clamping grooves (601) are clamped with the third protrusions (602) in a one-to-one correspondence manner;

the end faces of the two ends of the second fixed shaft (60) are respectively provided with a first end cover (603), and the first end covers (603) are abutted against the end faces of the fourth bevel gear (44) and the auxiliary spray arm (3).

11. The spraying device according to claim 5, characterized in that the spray arm seat (1) has a hollow inner cavity (10), the main spray arm (2) comprises a mounting section (21) and a spray section (22) vertically fixed on the mounting section (21); the liquid spraying section (22) is provided with a plurality of first nozzles (221);

the mounting section (21) is rotatably arranged on the hollow inner cavity (10) of the spray arm seat (1) in a penetrating manner, and the first bevel gear (41) is coaxially fixed on the outer wall of the spray arm seat (1); the transmission mechanism (4) and the auxiliary spray arm (3) are rotatably arranged on the spray section (22).

12. The spraying device according to claim 11, wherein one of a first protrusion (111) and a first clamping groove (112) is arranged on a first end surface (11) of the spraying arm seat (1) close to one side of the spraying section (22), the other of the first protrusion (111) and the first clamping groove (112) is arranged on a first surface (410) of the first bevel gear (41) facing one side of the first end surface (11), and the first clamping groove (111) and the first protrusion (112) are at least one;

the first surface (410) of the first bevel gear (41) is abutted to the first end face (11), and the first protrusions (111) are in one-to-one corresponding clamping fit with the first clamping grooves (112).

13. The spraying device according to claim 12, characterized in that the outer peripheral wall of the mounting section (21) is provided with a first annular flange (211) and a second annular flange (212) radially projecting and spaced apart;

a third annular flange (12) is arranged on the wall surface of the hollow inner cavity (10) of the spray arm seat (1); at least one fourth flange (14) protruding radially is arranged on the peripheral wall of the spray arm seat (1); an annular step surface (413) positioned on the inner side of the second tooth (4211) is arranged on the first bevel gear (41), and the annular step surface (413) and the first surface (410) are distributed in a back-to-back way;

the first annular flange (211) is positioned outside the spray arm seat (1) and can be abutted against the annular step surface (413); the second annular flange (212) is positioned outside the spray arm seat (1) and the upper surface of the second annular flange is abutted with the lower surface of the third annular flange (12); the fourth flange (14) is connected to an external base.

14. A cleaning apparatus, comprising:

the box body is provided with a positive n-shaped inner cavity;

the spray device of any one of claims 1-13, the axis of rotation of the main spray arm (2) of the spray device coinciding with the centre line of the regular n-sided cavity.