CN111919581A

CN111919581A - Sealing structure of automatic walking equipment

Info

Publication number: CN111919581A
Application number: CN202010691184.6A
Authority: CN
Inventors: 薛玉雷; 周国扬; 刘楷; 汪洋
Original assignee: Nanjing Sumec Intelligent Technology Co Ltd
Current assignee: Nanjing Sumec Intelligent Technology Co Ltd
Priority date: 2020-07-17
Filing date: 2020-07-17
Publication date: 2020-11-13

Abstract

The invention discloses a sealing structure of automatic walking equipment, which comprises: the main cavity is formed by mutually matching and installing an upper shell and a lower shell which are oppositely arranged; the auxiliary cavity is arranged in the main cavity and used for accommodating an outer wheel seat and an inner wheel seat of the motor, wherein the outer wheel seat of the motor is arranged at the upper part of the auxiliary cavity and is connected with an inner wheel seat of the motor arranged at the lower part of the auxiliary cavity; a knob, its bottom passes through the spliced pole go up the casing with motor foreign steamer seat upper end fixed connection drives the motor foreign steamer seat rotation through rotating gear adjust knob, and motor foreign steamer seat rotates and drives the motor that sets up in the motor fixing base and moves up and down along the axial, still includes: and the knob sealing piece is arranged between the outer wall of the connecting column and the upper shell, is used for realizing the sealing between the knob and the main cavity and does not move along with the insertion and the extraction of the knob.

Description

Sealing structure of automatic walking equipment

Technical Field

The invention relates to the field of waterproof sealing of structures, in particular to a sealing structure of automatic walking equipment.

Background

According to the existing intelligent mower, a mowing motor is arranged in a motor barrel, the upper part of the motor barrel is connected with an adjusting piece, and a user can adjust the height of the motor barrel by rotating the adjusting piece, so that the height of a mowing cutter head is adjusted. The end connection cutting blade disc of cutting motor, cutting blade disc is used for the cutting on lawn, mowing motor and cutting blade disc are in filthy and humid environment usually, also can meet the circumstances such as puddle in the work of mowing, if the motor intakes, cause motor damage and trouble easily, only set up the sealing member between casing and blade disc guard shield down on the present intelligent lawn mower, perhaps motor output shaft department sets up the sealing member, be difficult to satisfy the high waterproof requirement of motor, when mowing blade disc needs to wash, need dismantle the mowing blade disc and wash, can't wash intelligent lawn mower with water directly.

Disclosure of Invention

Aiming at the technical problems, the invention provides the sealing structure which has the advantages that the good sealing and waterproof effects are realized on the whole machine, the whole machine can be adapted to washing, and the mounting and the dismounting are convenient.

In order to achieve the technical purpose, the invention adopts the following technical scheme:

a sealing structure of an automatic walking device, comprising:

the main cavity is formed by mutually matching and installing an upper shell and a lower shell which are oppositely arranged;

an auxiliary cavity body arranged in the main cavity body and used for accommodating the outer wheel seat and the inner wheel seat of the motor, wherein,

the motor outer wheel seat is arranged at the upper part of the auxiliary cavity and is connected with the motor inner wheel seat arranged at the lower part of the auxiliary cavity;

a knob, its bottom passes through the spliced pole go up the casing with motor foreign steamer seat upper end links to each other, and the knob can for go up the casing and insert and extract, it is rotatory to drive motor foreign steamer seat through rotating gear adjust knob, and motor foreign steamer seat rotates and drives the motor that sets up in the motor fixing base along the upper and lower movement of axial, still includes:

and the knob sealing piece is arranged between the outer wall of the connecting column and the upper shell, is used for realizing the sealing between the knob and the main cavity and does not move along with the insertion and the extraction of the knob.

The knob sealing member is a double-layer annular structure with an H-shaped longitudinal section structure, a metal framework is arranged inside an outer ring of the double-layer annular structure, the outer ring provided with the metal framework is abutted against the upper shell, and the inner ring is sleeved outside the connecting column of the knob.

The motor is installed in the motor inner wheel seat, the bottom of the motor is connected with the motor fixing seat through the first fastening structure, the motor fixing seat is connected with the bottom of the motor inner wheel seat through the second fastening structure, and sealing elements are respectively arranged on the first fastening structures between the motor fixing seat and the motor inner wheel seat and between the motor fixing seat and the motor.

A main cavity sealing strip for sealing the main cavity formed by the upper shell and the lower shell is arranged between the outer side edge of the upper shell and the outer side edge of the lower shell which are mutually arranged.

5. The sealing structure of the automatic walking device according to claim 3, wherein a rubber sheath is provided between the lower housing and the motor fixing seat, one end of the rubber sheath is fixedly connected to the lower housing, and the other end is press-fitted between the bottom of the motor inner wheel seat and the motor fixing seat.

The motor fixing seat comprises a chassis main body, a chassis connecting part and a plurality of flanges, wherein the chassis connecting part is arranged in the middle of the chassis main body and protrudes out of the surface of the chassis main body, the flanges are arranged on the periphery of the chassis, the chassis connecting part is connected with the bottom of the motor through a screw, a screw sealing part is sleeved on the screw, and a sealing ring is arranged between the periphery of the chassis connecting part and an inner wheel seat of the motor; the flanges are used for bearing the rubber sheath and preventing the rubber sheath from being in direct contact with the rotating cutter head.

And a motor output shaft of the motor extends out of the motor fixing seat and then is connected with the cutting cutter disc, and a motor output shaft sealing element is arranged between the motor output shaft and the motor fixing seat.

The top of the knob is provided with a through hole, and the interior of the knob connecting column is hollow;

the waterproof ventilation valve is arranged on the through hole at the top of the knob;

the waterproof vent valve is communicated with a cavity where the motor is located through the through hole and the hollow part inside the knob connecting column in sequence, heat generated during the working of the motor is discharged through the waterproof vent valve, and the waterproof vent valve is provided with a dust cover.

The motor is a double-output-shaft motor, and a rotating shaft at the upper part of the double-output-shaft motor is connected with a fan.

The motor fixing seat is made of a heat conducting material.

The upper surface of the cutter disc connected with the output shaft of the motor is provided with a plurality of blades for radiating the motor fixing seat.

The auxiliary cavity comprises: one end of the upper auxiliary cavity isolation wall is connected with the inner wall of the upper shell, and the other end of the upper auxiliary cavity isolation wall extends towards the main cavity;

one end of the lower auxiliary cavity isolation wall is connected with the inner wall of the lower shell, and the other end of the lower auxiliary cavity isolation wall extends towards the main cavity;

the lower end of the upper auxiliary cavity partition wall and/or the upper end of the lower auxiliary cavity partition wall are/is provided with a sealing strip installation groove;

and the auxiliary cavity sealing strip is arranged in a sealing strip mounting groove between the upper auxiliary cavity partition wall and the lower auxiliary cavity partition wall which are oppositely arranged, and is used for sealing the auxiliary cavity.

The automatic walking equipment comprises the sealing structure.

Has the advantages that:

according to the invention, the knob sealing element is arranged at the knob, the knob sealing element can be fixed on the upper shell, and through the design of the metal framework, the sealing element does not move along with the insertion and the extraction of the knob, so that the knob is convenient to mount and dismount, and the structure is simple.

Secondly, through the design of the motor fixing seat, the motor can be directly taken out from the lower part of the machine, the disassembly is convenient, the lower part of the rubber sheath is installed between the lower shell and the motor fixing seat in a press fitting mode, the structure is simple, and the disassembly is convenient.

And thirdly, sealing parts are respectively arranged on the fastening structures between the motor fixing seat and the motor inner wheel seat and between the motor fixing seat and the motor, and sealing structures are arranged at multiple positions, so that the high waterproof requirement of the motor can be met, the sealing structure of the auxiliary cavity and the sealing structure of the lead between the motor and the circuit board in the main cavity can be omitted, the machine structure is greatly simplified, and a user can directly wash the mower.

And fourthly, the motor can be effectively cooled through the combination of the waterproof ventilation valve and the fan.

And fifthly, the motor fixing seat is made of metal, so that the heat conductivity of the motor is improved, and the motor can be effectively radiated by airflow generated by rotation of the blades on the upper part of the cutter head.

Drawings

FIG. 1 is a schematic view of an assembly structure of an intelligent mower according to an embodiment;

wherein, 1, an upper shell; 2. a lower housing; 5. a motor inner wheel seat; 6. a motor outer wheel seat; 7. a motor; 9. a knob; 10. a motor fixing seat; 11. a secondary cavity sealing strip; 12. a rubber sheath; 14. a knob seal; 20. a seal ring;

FIG. 2 is a schematic cross-sectional view of an intelligent lawn mower according to an embodiment;

wherein, 3, the upper auxiliary cavity isolation wall; 4. a lower auxiliary chamber partition wall; 8. an output shaft of the motor; 13. a motor output shaft seal; 19. a screw;

FIG. 3 is a schematic view showing a rubber boot mounting structure according to the embodiment;

FIG. 4 is a schematic cross-sectional view of a motor holder according to an embodiment;

101, a chassis main body; 102. a chassis connecting portion; 103. a flange;

FIG. 5 is a schematic view of a screw seal arrangement according to an embodiment;

16, screws; 17. a seal ring; 18. a screw seal mounting groove;

FIG. 6 is a schematic view of an embodiment of a sealing structure of an output shaft of a motor;

FIG. 7 is a schematic view of a knob seal according to an embodiment;

FIG. 8 is a schematic cross-sectional view of a knob seal according to an embodiment;

wherein, 15, a metal framework;

FIG. 9 is a schematic cross-sectional view of a second intelligent mower according to an embodiment;

wherein, 21, a waterproof vent valve; 22. a fan;

FIG. 10 is a schematic illustration of an embodiment two blade configuration;

among them, 23, radiating fin.

Detailed Description

Example 1

As shown in figure 1, the mowing robot is installed by mutually matching an upper shell 1 and a lower shell 2 to form a main cavity, the main cavity sealing device comprises a main cavity sealing strip arranged on the outer side edge of the lower shell 2, and the outer side edge of the upper shell 1 compresses the main cavity sealing strip.

As shown in fig. 1-2, a secondary chamber is also disposed within the primary chamber. The auxiliary cavity sealing structure specifically comprises: go up casing 1 and be equipped with vice chamber division wall 3 towards the machine is inside, lower casing 2 is equipped with down vice chamber division wall 4 towards the machine is inside, and 4 one side of lower vice chamber division wall are equipped with the mounting groove, go up vice chamber division wall 3 and vice chamber division wall 4's mounting groove butt joint down and form vice cavity, are equipped with vice chamber sealing strip 11 in the mounting groove, go up 3 lower extremes of vice chamber division wall and compress tightly vice chamber sealing strip 11.

Vice cavity is used for holding wheel seat 5 and motor foreign steamer seat 6 in the motor, and 5 upper portion outsides of wheel seat are equipped with the external screw thread in the motor, and 6 inner walls of motor foreign steamer seat are equipped with the internal thread, and wheel seat 5 passes through threaded connection with motor foreign steamer seat 6 in the motor. Install motor 7 in the motor inner wheel seat 5, motor 7 bottom links to each other with motor fixing base 10 through the screw, and motor fixing base 10 passes through the screw and links to each other with motor inner wheel seat 5 bottom.

In order to avoid water inflow of the motor, a plurality of sealing structures are designed, and the sealing structure is specifically as follows:

as shown in fig. 2 and 3, a rubber sheath 12 is disposed between the lower casing 2 and the motor fixing seat 10, one end of the rubber sheath 12 is fixedly connected to the lower casing 2, the other end of the rubber sheath is press-fitted between the motor inner wheel seat 5 and the motor fixing seat 10, and the rubber sheath is corrugated and has a telescopic structure.

As shown in fig. 2 and 4, the motor fixing seat 10 includes a chassis main body 101, a chassis connecting portion 102 disposed in the middle of the chassis main body and protruding out of the surface of the chassis main body, and a plurality of flanges 103 disposed on the periphery of the chassis, the chassis connecting portion is connected to the bottom of the motor 7 through a screw 16, the chassis main body is connected to the inner wheel seat 5 of the motor through a screw 19, a sealing ring 20 is disposed between the periphery of the chassis connecting portion and the inner wheel seat 5 of the motor, and water entering from a gap between the screw 19 and the motor fixing seat 10 is prevented from entering the motor.

The sealing ring 20 is preferably an O-ring.

The flanges can be used for bearing the rubber sheath 12, and the rubber sheath 12 is prevented from being in direct contact with a rotating cutter head, so that the rubber sheath is damaged and the waterproof effect of the rubber sheath is lost.

As shown in fig. 2 and 5, the chassis connecting portion is connected with the bottom of the motor 7 through a plurality of screws 16, the screw sealing member 17 is sleeved on the screws 16 for preventing water from entering into a gap between the screws 16 and the motor fixing seat 10, and the chassis connecting portion of the motor fixing seat 10 is provided with a screw sealing member mounting groove 18 for accommodating the screw sealing member 17, so that tight fit installation is realized.

The screw seal is preferably an O-ring.

As shown in fig. 2 and 6, a motor output shaft 8 of the motor 7 extends out of the motor fixing seat 10 and then is connected with the cutter disc, and a motor output shaft sealing member 13, such as a felt, is arranged between the motor output shaft 8 and the motor fixing seat 10.

As shown in fig. 2 and 7, the upper end of the motor outer wheel seat 6 is fixedly connected with the knob 9, and the knob 9 can be rotated by a user to drive the motor outer wheel seat 6 to rotate but can not move up and down, so that the motor inner wheel seat 5 is driven to move up and down to realize the adjustment of the height of the cutting cutterhead. Be equipped with knob sealing member 14 between the spliced pole of knob 9 and last casing 1, as shown in fig. 8, knob sealing member 14 is the double-deck annular structure of H type for the longitudinal section structure, the inside metal framework that is equipped with of outer loop of double-deck annular structure, casing 1 on the outer loop butt, the spliced pole outside of knob 9 is located to the inner ring cover, knob sealing member 14 is the rubber material, design through metal framework structure, when installation and dismantlement knob 9, knob sealing member 14 can be fixed on last casing 1 well, and can not take place the displacement along with knob 9, make things convenient for the equipment and the dismantlement of knob.

When the motor is disassembled, replaced and maintained, only the screw 19 needs to be disassembled, and the motor fixing seat and the motor are taken out together from the bottom.

Example 2

The other structures are completely the same as embodiment 1, except that as shown in fig. 9-10, in this embodiment, a waterproof vent valve 21 is installed on the knob 9, the inside of the connecting column of the knob 9 is hollow, a through hole is formed in the upper portion of the motor outer wheel seat 6, the inside of the connecting column of the knob 9 is communicated with the cavity where the motor 7 is located through the through hole, heat generated during the operation of the motor can be discharged through the waterproof vent valve 21, a dust cover is installed on the waterproof vent valve 21, and the vent hole of the waterproof vent valve is formed in the side edge, so that pollution of dust, grass mud and the like and blockage of the vent hole of the. The upper portion of the motor 7 is provided with the fan 22, the motor 7 drives the fan 22 to rotate, air flow is generated, the air flow flows out of the waterproof ventilation valve 21, effective heat dissipation effect can be achieved on the motor 7, and an extra power device does not need to be added.

In order to further improve the heat dissipation effect of motor, motor fixing base 10 adopts the metal material, because the motor also is the metal material, the heat that the motor produced can conduct to the external world through the motor fixing base 10 of metal material, and the blade disc upper surface is equipped with a plurality of blades 23, and when the blade disc was rotatory, the blade was rotatory simultaneously, produced the air current, dispelled the heat to motor fixing base 10.

Example 3

The other structures are completely the same as those of embodiment 1, and the secondary chamber sealing structure is omitted in this embodiment. Because be provided with main cavity body seal structure between last casing and the lower casing, be provided with knob seal structure between knob and the last casing, between motor fixing base and the lower casing, between the wheel base in motor fixing base and the motor, the motor output shaft outside all is equipped with seal structure, can guarantee good water-proof effects, need not set up extra waterproof construction again in vice cavity department, and, the lead wire of the circuit board in motor 7 and the main cavity body also need not set up extra waterproof construction in vice cavity, make intelligent lawn mower's structure simpler, and waterproof sealing is effectual.

Claims

1. A sealing structure of an automatic walking device, comprising:

a knob, its bottom passes through the spliced pole go up the casing with motor foreign steamer seat upper end links to each other, and the knob can for go up the casing and insert and extract, it is rotatory to drive motor foreign steamer seat through rotating gear adjust knob, and motor foreign steamer seat rotates and drives the motor that sets up in the motor fixing base along the upper and lower removal of axial, its characterized in that still includes:

2. The sealing structure of the automatic walking device according to claim 1, wherein the knob sealing member is a double-layer ring structure having a longitudinal cross-sectional structure in an H-shape, a metal skeleton is provided inside an outer ring of the double-layer ring structure, the outer ring provided with the metal skeleton is abutted against the upper housing, and an inner ring is sleeved outside the connecting column of the knob.

3. The sealing structure of the automatic walking device of claim 1, wherein a motor is installed in the motor inner wheel seat, the bottom of the motor is connected with the motor fixing seat through a first fastening structure, the motor fixing seat is connected with the bottom of the motor inner wheel seat through a second fastening structure, and sealing members are respectively arranged on the first fastening structures between the motor fixing seat and the motor inner wheel seat and between the motor fixing seat and the motor.

4. The sealing structure of a self-propelled device according to claim 1, wherein a main cavity sealing strip for sealing a main cavity formed by the upper housing and the lower housing is provided between the outer side edge of the upper housing and the outer side edge of the lower housing which are oriented toward each other.

6. The sealing structure of the automatic walking equipment according to claim 5, wherein the motor fixing seat comprises a chassis main body, a chassis connecting part which is arranged in the middle of the chassis main body and protrudes out of the surface of the chassis main body, and a plurality of flanges which are arranged on the periphery of the chassis, wherein the chassis connecting part is connected with the bottom of the motor through a screw, a screw sealing part is sleeved on the screw, and a sealing ring is arranged between the periphery of the chassis connecting part and the inner wheel seat of the motor; the flanges are used for bearing the rubber sheath and preventing the rubber sheath from being in direct contact with the rotating cutter head.

7. The sealing structure of automatic walking equipment according to claim 1, wherein the motor output shaft of said motor is connected to the cutter disc after extending out of the motor fixing seat, and a motor output shaft sealing member is provided between the motor output shaft and the motor fixing seat.

8. The sealing structure of the automatic walking device according to claim 1, wherein the top of the knob is provided with a through hole, and the inside of the knob connecting column is hollow;

9. The seal structure of automatic walking device of claim 8,

10. The sealing structure of an automatic walking device according to claim 1, wherein the motor fixing seat is made of a heat conductive material.

11. The sealing structure of automatic walking equipment according to claim 7, wherein the upper surface of the cutter disc connected to the output shaft of the motor is provided with a plurality of blades for dissipating heat from the motor fixing base.

12. The sealing structure of automatic walking equipment of claim 1, wherein said secondary cavity comprises: one end of the upper auxiliary cavity isolation wall is connected with the inner wall of the upper shell, and the other end of the upper auxiliary cavity isolation wall extends towards the main cavity;

13. An automatic walking device comprising a sealing structure according to any one of claims 1 to 12.