초록 ▼

A corner key includes a first body and a first engaging portion. The first body has a first slot. The first engaging portion is disposed on a surface of the first body and a position of the first engaging portion is corresponding to the first slot. The first engaging portion has a first section, a s

A corner key includes a first body and a first engaging portion. The first body has a first slot. The first engaging portion is disposed on a surface of the first body and a position of the first engaging portion is corresponding to the first slot. The first engaging portion has a first section, a second section and a third section, wherein the first and third sections are located at opposite sides of the first engaging portion, the second section is located between the first and third sections, and a height of the second section is greater than that of the first section or the third section.

대표청구항 ▼

1. A corner key comprising: a first body having a plurality of first slots formed therein and a head end; anda plurality of first engaging portions disposed on a surface of the first body corresponding to the plurality of first slots, each first engaging portion having a first section, a second sect

1. A corner key comprising: a first body having a plurality of first slots formed therein and a head end; anda plurality of first engaging portions disposed on a surface of the first body corresponding to the plurality of first slots, each first engaging portion having a first section, a second section, and a third section, the first section and the third section being located at opposite sides of the first engaging portion, the second section being located between the first section and the third section, a height of the second section being greater than a height of the first section or a height of the third section, the first engaging portion close to the head end being a tooth structure with tiny and dense teeth, the first engaging portion away from the head end being a tooth structure with large and sparse teeth. 2. The corner key of claim 1, wherein the first body has a long body side, one of the plurality of first slots has a long slot side, and a line from a middle point of the long body side to a middle point of the long slot side is substantially perpendicular to the first body. 3. The corner key of claim 1, wherein the first body has a long body side, one of the plurality of first slots has a long slot side, and an acute angle is included by the first body and a line from a middle point of the long body side to a middle point of the long slot side, and a distance between the first section and the middle point of the long slot side is less than a distance between the third section and the middle point of the long slot side. 4. The corner key of claim 1, further comprising: a second body connected to the first body and having a second slot formed therein, an angle being included between the first body and the second body; anda second engaging portion disposed on a surface of the second body corresponding to the second slot;wherein the structures of the second body, the second slot, and the second engaging portion are identical to the structures of the first body, the first slot, and the first engaging portion, respectively. 5. The corner key of claim 1, wherein each first slot has a long slot side, and the long slot side is arc-shaped. 6. The corner key of claim 1, wherein each first slot has a long slot side formed by at least two straight lines. 7. The corner key of claim 1, wherein each first engaging portion is inverted-tooth shaped. 8. The corner key of claim 1, wherein one of the plurality of first slots has a long slot side, one of the plurality of first engaging portions has two turns on the first body, and a distance between the two turns is less than or equal to a length of the long slot side. 9. The corner key of claim 1, wherein each first slot has a fourth section, a fifth section and a sixth section, the fourth section and the sixth section are located at opposite sides of each first slot, the fifth section is located between the fourth section and the sixth section, and a width of the fifth section is greater than a width of the fourth section or a width of the sixth section. 10. The corner key of claim 9, wherein the fourth section is close to the head end, the sixth section is away from the head end, and a width of the fourth section is greater than a width of the sixth section. 11. The corner key of claim 1, further comprising a plurality of third engaging portions disposed on the surface of the first body opposite to the plurality of first engaging portions, each first slot being located between one of the first engaging portions and one of the third engaging portions; wherein the structure of each third engaging portion is substantially identical to the structure of the corresponding first engaging portion. 12. A frame assembly comprising: a first side frame having a first inner hole; anda corner key comprising: a first body having a plurality of first slots formed therein and a head end for inserting into the first inner hole; anda plurality of first engaging portions disposed on a surface of the first body corresponding to the plurality of first slots, each first engaging portion having a first section, a second section, and a third section, the first section and the third section being located at opposite sides of the first engaging portion, the second section being located between the first section and the third section, a height of the second section being greater than a height of the first section or a height of the third section, the first engaging portion close to the head end being a tooth structure with tiny and dense teeth, the first engaging portion away from the head end being a tooth structure with large and sparse teeth. 13. The frame assembly of claim 12, wherein the first body has a long body side, one of the plurality of first slots has a long slot side, and a line from a middle point of the long body side to a middle point of the long slot side is substantially perpendicular to the first body. 14. The frame assembly of claim 12, wherein the first body has a long body side, one of the plurality of first slots has a long slot side, and an acute angle is included by the first body and a line from a middle point of the long body side to a middle point of the long slot side, and a distance between the first section and the middle point of the long slot side is less than a distance between the third section and the middle point of the long slot side. 15. The frame assembly of claim 12, wherein the frame assembly further comprises a second side frame having a second inner hole, and the corner key further comprises: a second body connected to the first body and having a second slot formed therein for inserting the second inner hole, an angle being included between the first body and the second body; anda second engaging portion disposed on a surface of the second body corresponding to the second slot;wherein the structures of the second body, the second slot, and the second engaging portion are identical to the structures of the first body, the first slot, and the first engaging portion, respectively. 16. The frame assembly of claim 12, wherein each first slot has a long slot side, and the long slot side is arc-shaped. 17. The frame assembly of claim 12, wherein each first slot has a long slot side formed by at least two straight lines. 18. The frame assembly of claim 12, wherein each first engaging portion is inverted-tooth shaped. 19. The frame assembly of claim 12, wherein one of the plurality of first slots has a long slot side, one of the plurality of first engaging portions has two turns on the first body, and a distance between the two turns is less than or equal to a length of the long slot side. 20. The frame assembly of claim 12, wherein each first slot has a fourth section, a fifth section and a sixth section, the fourth section and the sixth section are located at opposite sides of each first slot, the fifth section is located between the fourth section and the sixth section, and a width of the fifth section is greater than a width of the fourth section or a width of the sixth section. 21. The frame assembly of claim 20, wherein the fourth section is close to the head end, the sixth section is away from the head end, and a width of the fourth section is greater than a width of the sixth section. 22. The frame assembly of claim 12, wherein the corner key further comprises a plurality of third engaging portions disposed on the surface of the first body opposite to the plurality of first engaging portions, each first slot is located between one of the first engaging portions and one of the third engaging portions, and the structure of each third engaging portion is substantially identical to the structure of the corresponding first engaging portion. 23. The corner key of claim 1, wherein each first slot has a long slot side, and a length of each long slot side is greater than or equal to a length of each first engaging portion. 24. The frame assembly of claim 12, wherein each first slot has a long slot side, and a length of each long slot side is greater than or equal to a length of each first engaging portion.