CN218552229U - Cleaning robot and circuit board assembly thereof - Google Patents

Abstract

The utility model relates to a robot field discloses a cleaning robot and circuit board assembly thereof, and circuit board assembly includes circuit board, electron device and electrically conductive. The circuit board includes a ground terminal. The electronic device is mounted to the circuit board. The conductive piece is arranged on the circuit board and electrically connected with the grounding terminal, the conductive piece is arranged adjacent to the electronic device, the height of the conductive piece is greater than that of the electronic device, and the conductive piece is used for absorbing static electricity and releasing the static electricity through the grounding terminal. Through the arrangement, electrostatic discharge can be realized without connecting each electronic device with a conductive piece, the number of the conductive pieces is reduced, and the manufacturing cost is reduced.

Description

Cleaning robot and circuit board assembly thereof

Technical Field

The utility model relates to a robot field especially relates to a cleaning robot and circuit board components thereof.

Background

The cleaning robot is one kind of intelligent domestic appliance, collects self-cleaning technique and humanized intelligent design in an organic whole, generally adopts modes such as brush and sweep, dust absorption, mopping, absorbs the rubbish receiver that gets into self with ground debris to accomplish the ground cleanness. Usually, a series of lamp beads are arranged around a key of the cleaning robot, so that a user can more directly know whether the key can be normally used or not when using the cleaning robot. Because there is the existence of lamp pearl, so can some other devices by the way, current cleaning machines people can make cleaning machines people flat as far as in order to make it can be clean more comprehensively, can lead to the circuit board of button to shorten from the distance of face lid like this, and then lead to the air distance of circuit board and face lid shorter, thereby appear doing the unable fine release Static of Static discharge (ESD) test when doing, make Static directly damage circuit board or other devices on the circuit board through the welding point of electron device easily.

In most of the existing processing methods, an ESD tube is added behind each electronic device to ensure that when static electricity enters a circuit board from a solder leg of the electronic device during static electricity test, the circuit board and other electronic devices on the circuit board are not damaged, but a large number of ESD tubes are required to be arranged in the method.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides a aim at providing a cleaning robot and circuit board assembly thereof to circuit board need set up a large amount of ESD pipes in order to release the technical problem of static among the solution prior art.

The embodiment of the utility model provides a solve its technical problem and adopt following technical scheme:

there is provided a circuit board assembly comprising:

a circuit board including a ground terminal;

an electronic device mounted on the circuit board;

and the conductive piece is arranged on the circuit board and electrically connected with the grounding terminal, the conductive piece and the electronic device are arranged adjacently, the height of the conductive piece is greater than that of the electronic device, and the conductive piece is used for absorbing static electricity and releasing the static electricity through the grounding terminal.

In some embodiments, a plurality of the electronic devices are arranged around the indicating component to form an indicating component, a plurality of the conductive pieces are arranged on the inner side and the outer side of the indicating component, and the conductive pieces are arranged at intervals.

In some embodiments, the conductive elements on the inside of the indicating assembly alternate with the conductive elements on the outside of the indicating assembly.

In some embodiments, the separation distance between any two adjacent conductive components on the same side is greater than the separation distance between any two adjacent electronic components.

In some embodiments, the conductive member includes a conductive portion and a connection portion, the conductive portion being connected with the connection portion; the connecting part is arranged on the circuit board and is electrically connected with the grounding end;

the conductive part is used for absorbing static electricity and releasing the static electricity through the grounding end.

In some embodiments, the connection portion is a pin, and the pin is soldered on the circuit board.

In some embodiments, the conductive portion is provided with an oxidation preventing layer.

In another aspect, there is also provided a cleaning robot including:

a housing;

the key is arranged on the shell, and a gap is formed between the key and the shell;

the circuit board assembly described above, wherein the conductive member is configured to absorb static electricity that enters the cleaning robot through a gap between the housing and the key;

the trigger piece is arranged on the circuit board, and the position of the trigger piece corresponds to the position of the key.

In some embodiments, the key includes a contact facing the circuit board, the position of the contact corresponding to the position of the trigger.

In some embodiments, a hollowed-out portion is provided on the housing; the button is established in the fretwork portion, the tip of button outwards bends to extend and forms the part that blocks, the part that blocks is used for leaning on the bottom of fretwork portion is in order to prevent the button breaks away from the casing.

Compared with the prior art, the embodiment of the utility model provides a pair of cleaning robot and circuit board assembly thereof, electrically conductive piece install in the circuit board and with the earthing terminal electricity is connected, electrically conductive piece with the adjacent setting of electronic device, highly being greater than of electrically conductive piece electronic device's height, electrically conductive piece is used for absorbing static, and passes through earthing terminal release static, through such setting, do not need every electronic device to connect electrically conductive piece and can realize static release, reduced the quantity of electrically conductive piece, reduced manufacturing cost.

Drawings

One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the figures in which like reference numerals refer to similar elements and which are not to scale unless otherwise specified.

Fig. 1 is a schematic structural diagram of a circuit board assembly according to an embodiment of the present invention;

fig. 2 is a schematic diagram of a conductive member of the circuit board assembly shown in fig. 1;

fig. 3 is a cross-sectional view of a cleaning robot according to another embodiment of the present invention;

FIG. 4 is an enlarged schematic view at A of FIG. 3;

fig. 5 is an exploded view of a housing of the cleaning robot shown in fig. 3.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described in more detail with reference to the accompanying drawings and specific embodiments. It will be understood that when an element is referred to as being "connected" to another element, it can be directly on the other element or intervening elements may be present. The terms "upper", "lower", "left", "right", "upper", "lower", "top" and "bottom" used in this specification indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplified description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a circuit board assembly according to an embodiment of the present invention. The circuit board assembly 30 provided in one embodiment of the present invention includes a circuit board 31, an electronic device 32, and a conductive member 33. Circuit board 31 includes a ground terminal, electronic device 32 is mounted on circuit board 31, conductive member 33 is mounted on circuit board 31 and electrically connected to the ground terminal, conductive member 33 is disposed adjacent to electronic device 32, and the height of conductive member 33 is greater than the height of electronic device 32, and conductive member 33 is for absorbing static electricity and discharging the static electricity through the ground terminal.

When static electricity is absorbed by the conductive member 33 during the static electricity testing process, and the static electricity is discharged through the grounding terminal and finally introduced into the ground, the circuit board 31 and the electronic devices 32 on the circuit board 31 can be effectively protected from being damaged due to static electricity interference. In addition, static electricity discharge can be realized without connecting each electronic device 32 with one conductive piece 33, the number of the conductive pieces 33 is reduced, and the manufacturing cost is reduced.

The circuit board 31 may be a printed circuit board.

The electronic device 32 includes a lamp bead, a chip, a crystal oscillator, a diode, a triode, and the like, which are disposed in the cleaning robot 100.

The electronic device 32 is soldered on the circuit board 31. The electronic device 32 can be soldered on the circuit board 31 by Surface Mount Technology (SMT), and the process flow specifically includes: the method comprises the steps of firstly, using a steel mesh printing machine to offset print solder paste or patches on bonding pads of a circuit board 31 to prepare for welding of an electronic device 32, then using a solder paste thickness gauge to check the quality of solder paste printing on the printing machine, checking the quantity of solder paste printed on the circuit board 31 and the position of the solder paste, checking the flatness and thickness of the solder paste printing, checking whether the solder paste printing deviates or not, checking whether a tip phenomenon occurs in demoulding of a solder paste steel mesh on the printing machine or not, and the like, then using a chip mounter to accurately assemble pins of the electronic device 32 to fixed positions of the circuit board 31, and initially adhering the electronic device 32 to the set positions by soldering paste at normal temperature. Finally, the electronic device 32 is reflowed and melted, and when the solder paste is heated to a certain temperature, the solvent and part of the additives of the solder paste volatilize and the alloy powder melts, the solder paste flows again to interconnect the soldered electronic device 32 and the soldering pad on the circuit board 31, and the soldered electronic device 32 and the soldering pad on the circuit board 31 are cooled to form a permanently connected soldering point, so that the surface-mounted electronic device 32 and the circuit board 31 are tightly bonded together.

Can be with a large amount of electron device 32's pin fast soldering at circuit board 31 through the SMT mode, and then can improve the embodiment of the utility model provides a circuit board assembly 30's assembly efficiency reduces circuit board assembly 30's manufacturing cost.

In some specific examples, conductive member 33 is a metal device capable of absorbing static electricity, and the height of conductive member 33 is greater than the height of electronic device 32. Wherein, the height of the conductive member 33 is slightly less than the distance from the top cover 10 of the cleaning robot 100 to the circuit board 31. Specifically, the height of the conductive member 33 may be set according to the size of the cleaning robot 100, and the height of the electronic device 32 mounted on the circuit board 31 may be adjusted, where the conductive member 33 is disposed adjacent to the electronic device 32, and the distance between the conductive member 33 and the electronic device 32 is preferably 1 to 2mm.

In other specific examples, the ground may be a circuit node on the circuit board 31. After the conductive member 33 is electrically connected to the ground terminal through the circuit of the circuit board 31, the static electricity absorbed by the conductive member 33 is conducted to the ground terminal through the ground terminal to form a discharge loop, thereby playing a role of releasing the static electricity.

In some embodiments, the electronic devices 32 are enclosed to form an indicating assembly, the conductive members 33 are disposed on the inner and outer sides of the indicating assembly, and the conductive members 33 are spaced apart.

In some specific examples, several conductive members 33 are disposed on the inner and outer sides of the indication assembly, when the static electricity test is performed, the static electricity is firstly absorbed by the conductive member 33 located on the inner side of the indication assembly, then the unabsorbed static electricity is diffused outwards, and then the rest part is absorbed by the conductive member 33 located on the outer side of the indication assembly, by such an arrangement, the conductive members 33 on the inner and outer sides can completely absorb the static electricity in the air, so that the static electricity is not in contact with the electronic devices 32, the electronic devices 32 on the circuit board 31 are protected from the static electricity interference, and the safety of the equipment is improved.

In some specific examples, the plurality of electronic devices 32 are surrounded to form an indicating component, and the indicating component may be formed by a plurality of lamp beads, and is used for emitting light after the cleaning robot 100 is started, so as to ensure that a user directly knows the working state of the cleaning robot 100. Similarly, the indicating component may be formed by enclosing a plurality of chips, diodes, transistors, etc. disposed on the circuit board 31. The indicating component can be in a shape of a circle, a square, a triangle, an irregular polygon, or the like.

In some specific examples, several conductive devices 33 are disposed on the inner and outer sides of the indicating assembly, and several conductive devices 33 are arranged at intervals, wherein the distance between adjacent conductive devices 33 on the same side is the same, and the distance can be changed according to the size of the electronic device 32 to be placed, and the distance is optimal when one conductive device 33 can absorb static electricity above three surrounding electronic devices 32; each conductive member 33 is spaced apart from the adjacent conductive member 33 at the other side of the indicating assembly by the same distance, which may be varied according to the size of the electronic device 32 to be placed, and the distance is optimized when one conductive member 33 is allowed to absorb static electricity over the surrounding three electronic devices 32. Through the arrangement, the conductive pieces 33 can absorb static electricity above the electronic devices 32 nearby to the maximum extent, so that a row of electronic devices 32 can effectively absorb static electricity only by arranging a few conductive pieces 33 at regular intervals, the purpose of protecting the electronic devices 32 from static electricity interference is achieved, and the cost required for releasing the static electricity is also reduced.

In some embodiments, the conductive elements 33 located inside the indicating assembly alternate with the conductive elements 33 located outside the indicating assembly, and by such an arrangement, the number of conductive elements 33 to be placed can be reduced, thereby reducing costs.

In some embodiments, any two adjacent conductive members 33 on the same side are spaced apart by a distance greater than the spacing distance of any two adjacent electronic devices 32. Specifically, when a row of electronic devices 32 is provided, conductive members 33 are provided on both sides of the electronic devices 32, the conductive members 33 are provided adjacent to the electronic devices 32, and the distance between any two adjacent conductive members 33 on one side of the electronic devices 32 is greater than the distance between any two adjacent electronic devices 32.

Referring to fig. 2, fig. 2 is a schematic structural diagram of a conductive device according to the present invention. In some embodiments, the conductive member 33 includes a conductive portion 331 and a connection portion 332, the conductive portion 331 is connected to the connection portion 332; the connection portion 332 is mounted on the circuit board 31 and electrically connected to the ground; the conductive portion 331 is used to absorb static electricity and discharge the static electricity through the ground. Specifically, the conductive portion 331 may be made of a metal material that is easy to absorb static electricity, such as copper, iron, steel, and the like, and the connecting portion 332 is electrically connected to a ground terminal, so that during a static electricity test, static electricity is absorbed by the conductive portion 331 on the conductive member 33, and is discharged by the connecting portion 332 through the ground terminal and finally introduced into the ground terminal, and through such an arrangement, the conductive member 33 and the ground terminal form a discharge loop, thereby playing a role of discharging static electricity. An oxidation-resistant layer may be coated on the conductive portion 331 to prevent the conductive portion 331 from being oxidized after contacting with air for a long time, thereby reducing the performance of the conductive portion 331 in absorbing static electricity.

In some embodiments, the connecting portions 332 are pins, and the connecting portions 332 are soldered on the circuit board 31 in a manner known in the art.

In some specific examples, the leads may be soldered to the circuit board 31 by an SMT mounter, specifically, a solder paste or a patch is first offset-printed on a pad of the circuit board 31 using a steel screen printer in preparation for soldering of the conductive portion 331, then the quality of the solder paste printing on the printer is checked using a solder paste thickness gauge, the amount of solder printed on the circuit board 31 and the position of the solder paste are checked, the flatness and thickness of the solder paste printing are checked, whether there is a deviation in the solder paste printing, whether there is a tip-off phenomenon in the solder screen stripping on the printer, etc., and then the leads are accurately mounted to fixed positions of the circuit board 31 using the mounter, and the conductive portion 331 may be attached to an initially set position at normal temperature. Finally, the conductive member 33 is reflowed and melted, and when the solder paste is heated to a certain temperature, the solder paste flows again to interconnect the soldered conductive portion 331 and the pad on the circuit board 31 together with the volatilization of the solvent and part of the additives of the solder paste and the melting of the alloy powder, and the solder paste is cooled to form a permanently connected solder point, so that the surface-mounted conductive portion 331 and the circuit board 31 are tightly bonded together. With this arrangement, the connecting portion 332 of the conductive member 33 can be soldered on the circuit board 31, so that the conductive member 33 is electrically connected to the ground, in which case the conductive member 33 can be directly soldered on the circuit board 31 as a device in SMT chip mounting, which can save space and assembly steps compared with some large conductive sheets that are stuck outside or inside the board.

In addition, electronic device 32 and electrically conductive piece 33 all pass through SMT paster mode lug connection on circuit board 31, can improve the embodiment of the utility model provides a circuit board assembly 30's manufacturing efficiency reduces circuit board assembly 30's manufacturing cost.

The conductive member 33 may be a metal sheet bent integrally, and the conductive member 33 may be bent to form a conductive portion 331 and a connecting portion 332 arranged at an included angle. In this case, a threaded through hole is formed in the connecting portion 332, a blind hole of the same size is formed in the circuit board 31, and then the connecting portion 332 is fixed to the circuit board 31 by turning a screw or a threaded through hole of the same size is formed in the circuit board 31 using a bolt and a nut to fit the connecting portion 332 to the circuit board 31. In addition, a limiting groove may be formed on the circuit board 31, the connecting portion 332 is in a downwardly extending snap-fit shape, and the connecting portion 332 is fixed on the circuit board 31 by means of snap-fit connection.

In some embodiments, the conductive portion 331 may be provided with an oxidation preventing layer, so that when the conductive element 33 is exposed to air for a long time, the conductive element 33 is easily oxidized by air, and when the conductive element 33 is oxidized, the conductive performance is reduced, so that the static electricity absorbing or releasing capability is reduced, and when the conductive element 33 is coated with the oxidation preventing layer, the contact between the conductive element 33 and air is reduced, thereby effectively preventing the conductive element 33 from being oxidized, and by such arrangement, the service life of the conductive element 33 can be prolonged.

Referring to fig. 3 to 5, fig. 3 is a cross-sectional view of a top cover of a cleaning robot according to another embodiment of the present invention, fig. 4 is an enlarged schematic view of a position a in fig. 3, and fig. 5 is a schematic view of a key assembly of the top cover of the cleaning robot according to the present invention. Another embodiment of the present invention provides a cleaning robot 100, which includes a top cover 10, a button 20, a circuit board assembly 30 and a trigger 40. The key 20 is mounted on the top cover 10 with a gap formed therebetween with respect to the top cover 10. The conductive member 33 serves to absorb static electricity that enters the inside of the cleaning robot 100 through the gap between the top cover 10 and the key 20. The trigger 40 is mounted on the circuit board 31, and the position of the trigger 40 corresponds to the position of the key 20.

Among them, the top cover 10 serves to protect and carry the internal structure of the cleaning robot 100.

In some embodiments, the cleaning robot 100 is provided with infrared switches at both the front and side thereof as collision detection sensors. Three infrared switches are installed at the bottom of the cleaning robot 100 as step detection sensors to prevent the cleaning robot 100 from falling.

In some embodiments, the conductive member 33 is used to absorb static electricity entering the inside of the cleaning robot 100 through the gap between the top cover 10 and the key 20, and in the static electricity test, the static electricity enters the inside of the cleaning robot 100 through the gap between the top cover 10 and the key 20, is preferentially absorbed by the conductive member 33 closer to the gap, and the static electricity which is not absorbed in time is diffused to the conductive member 33 farther from the gap and is further absorbed, so that the static electricity in the air is completely absorbed.

In some specific examples, the circuit board 31 has a trigger 40 mounted thereon, and the trigger 40 corresponds to the position of the key 20. The trigger 40 is used to control the closing and opening of the circuit on the circuit board 31. Specifically, the trigger 40 may be a touch key switch, and when the touch key switch is pressed in the operating direction under the condition of satisfying the operating force, the touch key switch may turn on or off the circuit. The trigger 40 is turned on or off by the change of the stress of the metal spring in the internal structure.

In some embodiments, the button 20 includes a contact member 201, the contact member 201 faces the circuit board 31, the position of the contact member 201 corresponds to the position of the trigger 40, the cleaning robot 100 starts to work by applying a downward pressure to the button 20 to move the button 20 downward, so that the contact member 201 moves to the position of the trigger 40 and applies a downward force to the trigger 40, the circuit board 31 is powered on, and the cleaning robot 100 stops working when the downward pressure is applied to the button 20 for a second time to move the contact member 201 to the position of the trigger 40 and apply a downward force to the trigger 40.

In some embodiments, the top cover 10 is provided with a hollow portion 11, the key 20 is disposed in the hollow portion 11, and the area of the key 20 is slightly smaller than the area of the hollow portion 11, so that the gap is between the outer periphery of the key 20 and the inner periphery of the hollow portion 11. The end of the key 20 bends outwards to form a blocking part 202, the blocking part 202 is used for abutting against the bottom end of the hollow part 11 to prevent the key 20 from being separated from the top cover 10, through the arrangement, the key 20 can be connected in the hollow part 11 in a sliding manner, the key 20 can slide up and down in the hollow part 11 to press the contact trigger 40, wherein when the end of the key 20 abuts against the bottom end of the hollow part 11, the initial position is obtained; when the key 20 slides downwards until the contact member 201 touches the trigger member 40, it is the target position.

In some specific examples, when the key 20 slides upward from the target position to the initial position, the blocking portion 202 abuts against the bottom end of the hollow portion 11, and the key 20 is prevented from further sliding upward and being detached from the top cover 10.

It should be particularly noted that the cleaning robot 100 provided by the embodiment of the present invention only shows the portion related to the technical problem to be solved by the embodiment of the present invention, and it can be understood that the cleaning robot 100 provided by the embodiment of the present invention further includes other structures for realizing the functions of the cleaning robot 100, including but not limited to a driving assembly, a spraying assembly, a cleaning assembly, a clean water tank, a sewage tank, etc.

The driving assembly is arranged at the bottom of the cleaning robot 100, and comprises a driving motor and a bracket connected with an output shaft of the driving motor, and driving wheels are arranged at two ends of the bracket and are used for driving the cleaning robot 100 to move on the ground.

The driving wheel is provided with a photoelectric coding disc which can detect and control the wheel speed to realize positioning and path planning. While also extending the ultrasonic sensor on the cleaning robot 100 for the need for precise positioning.

The spraying component is arranged at the bottom of the cleaning robot 100 and is provided with a spray head and a control valve, and clear water in the clear water tank is controlled by the control valve to be sprayed to the ground from the spray head, so that the ground is wetted and conveniently wiped.

The cleaning assembly is provided at the bottom of the cleaning robot 100, and is provided with a blower, a dust collecting box, and a cleaning brush assembly. One surface of the dust collecting box is communicated with a dust suction port of the fan and is used for sucking dust on the ground into the dust collecting box through the fan and wiping the ground clean through the cleaning brush component.

The clean water discharged from the clean water tank forms sewage after cleaning the ground, and the sewage is pumped and discharged into the sewage tank.

Finally, the resistance value of the conductive member 33 is preferably smaller than that of the electronic device 32, by which the static electricity can be absorbed more easily than the electronic device 32.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; within the idea of the invention, also technical features in the above embodiments or in different embodiments can be combined, steps can be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the scope of the invention in its corresponding aspects.

Claims (10)

1. A circuit board assembly, comprising:

a circuit board including a ground terminal;

an electronic device mounted to the circuit board;

and the conductive piece is arranged on the circuit board and electrically connected with the grounding terminal, is adjacent to the electronic device, is higher than the electronic device and is used for absorbing static electricity and releasing the static electricity through the grounding terminal.

2. The circuit board assembly of claim 1, wherein a plurality of the electronic devices are arranged to form an indication assembly, a plurality of the conductive members are arranged at inner and outer sides of the indication assembly, and the conductive members are arranged at intervals.

3. The circuit board assembly of claim 2, wherein the conductive members located inside the indicating assembly alternate with the conductive members located outside the indicating assembly.

4. The circuit board assembly of claim 2, wherein the distance between any two adjacent conductive members on the same side is greater than the distance between any two adjacent electronic devices.

5. The circuit board assembly according to claim 1, wherein the conductive member includes a conductive portion and a connection portion, the conductive portion being connected to the connection portion;

the connecting part is mounted on the circuit board and electrically connected with the grounding end;

the conductive part is used for absorbing static electricity and releasing the static electricity through the grounding end.

6. The circuit board assembly of claim 5, wherein the connecting portion is a pin that is soldered to the circuit board.

7. The circuit board assembly according to claim 5, wherein the conductive portion is provided with an oxidation preventing layer.

8. A cleaning robot, comprising:

a top cover;

the key is arranged on the top cover, and a gap is formed between the key and the top cover;

the circuit board assembly according to any one of claims 1 to 7, the conductive member for absorbing static electricity entering the inside of the cleaning robot through a gap between the top cover and the key;

the trigger piece is arranged on the circuit board, and the position of the trigger piece corresponds to the position of the key.

9. The cleaning robot of claim 8, wherein the key includes a contact element facing the circuit board, the contact element having a position corresponding to a position of the trigger element.

10. The cleaning robot of claim 8, wherein a hollowed-out portion is provided on the top cover; the button is established in the fretwork portion, the tip of button outwards bends to extend and forms the stop part, the stop part is used for leaning on the bottom of fretwork portion is in order to prevent the button breaks away from the top cap.

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