PCBA circuit board for sweeping robot

Abstract

The utility model discloses a PCBA circuit board for a sweeping robot, which comprises a PCBA substrate, an electrical layer is arranged on the upper side of the PCBA substrate, and electrical elements are assembled on the electrical layer. Connecting mechanisms are arranged at the two ends of the bottom of the PCBA substrate, the connecting mechanisms are used for installing the PCBA substrate on an external shell, a rotating disc is rotatably installed at the bottom of the PCBA substrate, a heat conduction layer is arranged at the bottom of the rotating disc, and a plurality of copper pipes distributed at equal intervals penetrate through the heat conduction layer. The heat conduction layer is arranged to accelerate conduction of heat at the bottom of the PCBA circuit board to the outside, the bad problem that heat dissipation of the PCBA circuit board is not smooth is avoided, heat dissipation airflow is blown into the position between the sweeping robot shell and the PCBA substrate in cooperation with an external fan, one port of the copper pipe faces the heat dissipation airflow, the heat dissipation airflow can flow in the copper pipe, and the heat dissipation effect of the PCBA circuit board is improved. The copper pipe is arranged to conduct heat dissipation airflow, the copper pipe conducts heat to the heat conduction layer, the inner wall of the copper pipe can also conduct heat dissipation, and the heat dissipation area of the heat conduction layer is further increased.

Description

Technical Field

[0001] This utility model relates to the field of circuit board technology, specifically a PCBA circuit board for a robotic vacuum cleaner. Background Technology

[0002] A robotic vacuum cleaner is an intelligent home cleaning device that automatically cleans floors using autonomous navigation, obstacle avoidance, and cleaning technologies. It integrates sensors, algorithms, and mechanical structures to simulate manual cleaning behavior and flexibly adjust its cleaning path according to the environment, significantly improving home cleaning efficiency.

[0003] The PCBA circuit board used in robotic vacuum cleaners is the core control unit, integrating functions such as navigation, obstacle avoidance, motor control, and communication. Currently, the PCBA circuit board in robotic vacuum cleaners is installed inside the machine housing using screws. Because there is contact or a certain gap between the bottom of the PCBA circuit board and the housing, heat easily accumulates on the bottom of the circuit board, preventing rapid heat dissipation and affecting its normal operation. To solve this problem, we propose a new PCBA circuit board for robotic vacuum cleaners. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a PCBA circuit board for a robotic vacuum cleaner.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] This utility model discloses a PCBA circuit board for a sweeping robot, including a PCBA substrate, an electrical layer disposed on the upper side of the PCBA substrate, and electrical components assembled on the electrical layer.

[0007] The PCBA substrate has connecting mechanisms at both ends of its bottom. These connecting mechanisms are connected to the outer housing and are used to mount the PCBA substrate onto the outer housing. A turntable is rotatably mounted on the bottom of the PCBA substrate. A heat-conducting layer is provided on the bottom of the turntable, and multiple equidistant copper tubes are threaded through the heat-conducting layer. The copper tubes are fixed to the heat-conducting layer and are hollow inside with open ends. An annular ring is fixedly mounted on the bottom of the PCBA substrate and fits around the turntable. The surface of the annular ring has anti-slip texture. Extrusion mechanisms are provided on both sides of the heat-conducting layer and are symmetrically distributed. The extrusion mechanisms extrude onto the annular ring.

[0008] In a preferred embodiment of this invention, the PCBA substrate is a ceramic substrate.

[0009] As a preferred embodiment of this invention, the thermally conductive layer is made of alumina, a material with high thermal conductivity.

[0010] As a preferred embodiment of this invention, the surface of the heat-conducting layer in contact with air is provided with several uniformly distributed pits.

[0011] As a preferred embodiment of this utility model, the extrusion mechanism includes a block fixed to the side of the heat-conducting layer, a spring telescopic rod is installed on the block, a pressure block is installed on the movable end of the spring telescopic rod, and the pressure block presses on the annular ring.

[0012] As a preferred technical solution of this utility model, the connecting mechanism includes an insert block disposed below the PCBA substrate. The lower end of the insert block is provided with a screw, the upper end of the screw is inserted into the bottom of the insert block and the two are threadedly connected. A sliding groove is provided on the insert block, an inclined block is slidably disposed in the sliding groove, and a spring is provided in the sliding groove. The two ends of the spring are respectively fixed to the inclined block and the inner side of the sliding groove.

[0013] As a preferred technical solution of this utility model, the connecting mechanism further includes a bottom block fixed to the bottom of the PCBA substrate. The bottom of the bottom block has an insertion port, and a limiting groove is formed inside the insertion port. A slidable top rod is inserted into one side of the bottom block. One end of the top rod extends into the limiting groove. A side piece is fixed to the end of the top rod. Two symmetrically distributed elastic members are fixed between the side piece and the bottom block.

[0014] As a preferred technical solution of this utility model, the bottom block is provided with a flow guiding arc surface on the side facing the heat guiding layer.

[0015] The beneficial effects of this utility model are:

[0016] The PCBA circuit board used in this type of robotic vacuum cleaner accelerates the heat conduction from the bottom of the PCBA circuit board to the outside by setting a heat-conducting layer, avoiding the problem of poor heat dissipation of the PCBA circuit board. With the help of an external fan, the heat dissipation airflow is blown into the space between the robotic vacuum cleaner shell and the PCBA substrate. By pointing one end of the copper pipe toward the heat dissipation airflow, the heat dissipation airflow can flow through the copper pipe. By setting the copper pipe to conduct the heat dissipation airflow, the copper pipe conducts heat to the heat-conducting layer. The inner wall of the copper pipe can also dissipate heat, further increasing the heat dissipation area of ​​the heat-conducting layer. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is an enlarged cross-sectional view of part of the insert block of this utility model;

[0020] Figure 3 This is a partial enlarged schematic diagram of the PCBA substrate of this utility model;

[0021] Figure 4 This is an enlarged sectional view of part of the structure at the bottom block of this utility model;

[0022] Figure 5 This is a partially enlarged schematic diagram of the heat-conducting layer of this utility model.

[0023] In the diagram: 1. PCBA substrate; 2. Electrical layer; 3. Turntable; 4. Thermal conductive layer; 5. Recess; 6. Copper pipe; 7. Ring; 8. Block; 9. Spring telescopic rod; 10. Pressure block; 11. Insert block; 12. Screw; 13. Slide groove; 14. Inclined block; 15. Spring; 16. Bottom block; 17. Insert; 18. Limiting groove; 19. Top rod; 20. Side plate; 21. Elastic element; 22. Guide arc surface; 23. Robot vacuum cleaner shell. Detailed Implementation

[0024] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0025] Example: Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the present invention discloses a PCBA circuit board for a sweeping robot, including a PCBA substrate 1, an electrical layer 2 disposed on the upper side of the PCBA substrate 1, and electrical components assembled on the electrical layer 2.

[0026] Both ends of the bottom of the PCBA substrate 1 are provided with connecting mechanisms, which are connected to the outer shell. The connecting mechanisms are used to install the PCBA substrate 1 on the outer shell. A turntable 3 is rotatably installed on the bottom of the PCBA substrate 1. A heat-conducting layer 4 is provided on the bottom of the turntable 3. Multiple copper tubes 6 are equidistantly distributed through the heat-conducting layer 4. The copper tubes 6 are fixed to the heat-conducting layer 4. The copper tubes 6 are hollow inside and open at both ends. An annular ring 7 is fixedly installed on the bottom of the PCBA substrate 1. The annular ring 7 is sleeved on the outside of the turntable 3. The surface of the annular ring 7 is provided with anti-slip texture. Both sides of the heat-conducting layer 4 are provided with extrusion mechanisms. The extrusion mechanisms on both sides are symmetrically distributed and extrude onto the annular ring 7.

[0027] The installation diagram of the device can be referred to. Figure 1 and Figure 2As shown, the insert 11 is installed on the robot vacuum cleaner housing 23 by screws 12, and then the PCBA substrate 1 is installed on the robot vacuum cleaner housing 23 by the connecting mechanism.

[0028] Among them, PCBA substrate 1 is a ceramic substrate. PCBA substrate 1 has good thermal conductivity, which is conducive to heat dissipation of PCBA circuit board. Thermal conductive layer 4 is alumina high thermal conductivity material. Alumina high thermal conductivity material has good thermal conductivity, which accelerates the heat dissipation at the bottom of PCBA substrate 1 through thermal conductive layer 4.

[0029] The surface of the heat-conducting layer 4 that comes into contact with the air has several evenly distributed pits 5. These pits 5 increase the contact area between the heat-conducting layer 4 and the air, thereby further accelerating heat dissipation. By setting the heat-conducting layer 4, heat is quickly conducted from the bottom of the PCBA circuit board to the outside, avoiding the problem of poor heat dissipation in the PCBA circuit board.

[0030] An external fan blows cooling airflow between the robot vacuum cleaner's outer shell 23 and the PCBA substrate 1. By pointing one end of the copper pipe 6 towards the cooling airflow, the airflow can flow through the copper pipe 6. The copper pipe 6 effectively guides the cooling airflow; without it, the airflow would easily become blocked at the bottom of the PCBA substrate 1, preventing it from effectively dissipating heat. Simultaneously, the copper pipe 6 conducts heat to the heat-conducting layer 4, and its inner wall also dissipates heat, further increasing the heat dissipation area of ​​the heat-conducting layer 4.

[0031] The extrusion mechanism includes a block 8 fixed to the side of the heat-conducting layer 4, a spring telescopic rod 9 installed on the block 8, and a pressure block 10 installed at the movable end of the spring telescopic rod 9, which presses against the annular ring 7.

[0032] By pulling down the pressure block 10 and separating it from the annular ring 7, the turntable 3 can be rotated, causing the heat-conducting layer 4 and copper pipe 6 on the turntable 3 to rotate, thereby adjusting the orientation of the copper pipe 6 to match the fans in different positions of the robot vacuum cleaner. Then, the spring telescopic rod 9 causes the pressure block 10 to press against the annular ring 7. The spring in the spring telescopic rod 9 is in a compressed state, and there is a large frictional force between the pressure block 10 and the annular ring 7. This frictional force is used to fix the orientation of the copper pipe 6, preventing it from deviating from the preset position due to shaking or other reasons.

[0033] The connection mechanism includes an insert block 11 located below the PCBA substrate 1. A screw 12 is located at the lower end of the insert block 11, with the upper end of the screw 12 inserted into the bottom of the insert block 11 and threadedly connected. A groove 13 is formed on the insert block 11, and a slidable wedge 14 is slidably disposed within the groove 13. A spring 15 is also located within the groove 13, with both ends of the spring 15 fixedly connected to the wedge 14 and the inner side of the groove 13, respectively. The connection mechanism also includes a base block 16 fixedly connected to the bottom of the PCBA substrate 1. An insertion port 17 is formed at the bottom of the base block 16, and a limiting groove 18 is formed inside the insertion port 17. A slidable push rod 19 is inserted into one side of the base block 16, with one end of the push rod 19 extending into the limiting groove 18. A side plate 20 is fixed to the end of the push rod 19, and two symmetrically distributed elastic elements 21 are fixedly connected between the side plate 20 and the base block 16.

[0034] When installing PCBA substrate 1, the connector 17 is placed over the connector 11 (the connector 11 is inserted into the connector 17). The bottom side of the connector 17 contacts and presses the inclined surface of the inclined block 14. As the connector 17 moves downward, the inclined block 14 moves into the slide groove 13, and the spring 15 is compressed. When the inclined block 14 moves to the limiting groove 18, the spring 15 forces the inclined block 14 into the limiting groove 18, thereby limiting the inclined block 14 and stably installing PCBA substrate 1 on the robot vacuum cleaner shell 23. When it is necessary to remove PCBA substrate 1, by pressing the side plates 20 on both sides, one end of the top rod 19 presses the inclined block 14 in the limiting groove 18, the elastic element 21 is compressed, and the inclined block 14 is completely separated from the limiting groove 18. The bottom block 16 and the connector 11 can be separated, and PCBA substrate 1 can be quickly removed from the robot vacuum cleaner shell 23.

[0035] Among them, the bottom block 16 has a flow guiding arc surface 22 on the side facing the heat guiding layer 4. When the airflow discharged from the copper pipe 6 blows onto the flow guiding arc surface 22, the airflow is guided, making it easier for the airflow to be discharged to the outside.

[0036] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A PCBA circuit board for a robotic vacuum cleaner, comprising a PCBA substrate (1), characterized in that, An electrical layer (2) is provided on the upper side of the PCBA substrate (1), and electrical components are assembled on the electrical layer (2); The PCBA substrate (1) has connecting mechanisms at both ends of its bottom. The connecting mechanisms are connected to the outer shell and are used to mount the PCBA substrate (1) onto the outer shell. A turntable (3) is rotatably mounted on the bottom of the PCBA substrate (1). A heat-conducting layer (4) is provided on the bottom of the turntable (3). Multiple copper tubes (6) are equidistantly distributed through the heat-conducting layer (4). The copper tubes (6) are fixedly connected to the heat-conducting layer (4). The copper tubes (6) are hollow inside and open at both ends. An annular ring (7) is fixedly mounted on the bottom of the PCBA substrate (1). The annular ring (7) is sleeved on the outside of the turntable (3). The surface of the annular ring (7) is provided with anti-slip texture. Extrusion mechanisms are provided on both sides of the heat-conducting layer (4). The extrusion mechanisms on both sides are symmetrically distributed and extrude onto the annular ring (7).

2. The PCBA circuit board for a robotic vacuum cleaner according to claim 1, characterized in that, The PCBA substrate (1) is a ceramic substrate.

3. The PCBA circuit board for a robotic vacuum cleaner according to claim 1, characterized in that, The thermally conductive layer (4) is made of alumina, a material with high thermal conductivity.

4. The PCBA circuit board for a sweeping robot according to claim 3, characterized in that, The surface of the heat-conducting layer (4) that is in contact with air is provided with several uniformly distributed pits (5).

5. A PCBA circuit board for a robotic vacuum cleaner according to claim 1, characterized in that, The extrusion mechanism includes a block (8) fixed to the side of the heat-conducting layer (4), a spring telescopic rod (9) is installed on the block (8), and a pressure block (10) is installed on the movable end of the spring telescopic rod (9), and the pressure block (10) presses on the annular ring (7).

6. A PCBA circuit board for a robotic vacuum cleaner according to claim 1, characterized in that, The connection mechanism includes an insert (11) located below the PCBA substrate (1). The lower end of the insert (11) is provided with a screw (12). The upper end of the screw (12) is inserted into the bottom of the insert (11) and the two are threaded together. The insert (11) is provided with a groove (13). An inclined block (14) is slidably arranged in the groove (13). A spring (15) is provided in the groove (13). The two ends of the spring (15) are respectively fixed to the inclined block (14) and the inside of the groove (13).

7. A PCBA circuit board for a sweeping robot according to claim 6, characterized in that, The connection mechanism also includes a bottom block (16) fixed to the bottom of the PCBA substrate (1). The bottom of the bottom block (16) has an opening (17). A limiting groove (18) is opened inside the opening (17). A sliding top rod (19) is inserted into one side of the bottom block (16). One end of the top rod (19) extends into the limiting groove (18). A side piece (20) is fixed to the end of the top rod (19). Two symmetrically distributed elastic elements (21) are fixed between the side piece (20) and the bottom block (16).

8. A PCBA circuit board for a robotic vacuum cleaner according to claim 7, characterized in that, The bottom block (16) has a flow guiding arc surface (22) on the side facing the heat guiding layer (4).

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