1.1is a front view showing a first dust filter for a cleaning robot;
1.2is a cross-sectional view taken along line A-A in 1.1;
1.3is a cross-sectional view taken along line B-B in 1.1;
1.4is a back view thereof;
1.5is a left view thereof;
1.6is a right view thereof;
1.7is a top view thereof;
1.8is an enlarged top view thereof;
1.9is a bottom view thereof;
1.10is an enlarged bottom view thereof;
1.11is a front, bottom perspective view thereof;
1.12is a front, top perspective view thereof;
1.13is a back, top perspective view thereof;
2.1is a front view showing a second dust filter for a cleaning robot;
2.2is a cross-sectional view taken along line A-A in 2.1;
2.3is a cross-sectional view taken along line B-B in 2.1;
2.4is a back view thereof;
2.5is a left view thereof;
2.6is a right view thereof;
2.7is a top view thereof;
2.8is an enlarged top view thereof;
2.9is a bottom view thereof;
2.10is an enlarged bottom view thereof;
2.11is a front, bottom perspective view thereof;
2.12is a front, top perspective view thereof; and
2.13is a back, top perspective view thereof.