the bending portion 13 does not interfere with other components not shown inside the electrical device 1 it is worth noting that the opening 31 of the storage device 30 is a threaded hole and the thread 122 is located on an outer surface 121 of the pin 12 thus the joint strength between the pin 12 and the opening 31 is raised please refer to fig4 a and fig4 b fig4 a is a side view of a buffer member according to another embodiment of the disclosure fig4 b is a side view of a buffer member according to another embodiment of the disclosure in this embodiment as shown in fig4 a a texture 123 a is located on an outer surface 121 a of the pin 12 a and the texture 123 a also raises the joint strength between the pin 12 a and the opening 31 furthermore in this embodiment as shown in fig4 b a plurality of projections 124 b are located on an outer surface 121 b of the pin 12 b and the plurality of projections 124 b also raise the joint strength between the pin 12 b and the opening 31 in some other embodiments of the disclosure it is noted that the pin 12 is tightly fitted interference fit with the opening 31 for enhancing the joint strength and there is no other protrusion structure located on the outer surface 121 of the pin 12 after the storage device 30 is combined with the frame body 20 and the buffer member 10 the frame body 20 and the storage device 30 regarded as a whole is located on the bearing.