Built-in gap measuring device and gap measurement method

A built-in gap measuring device, comprising:

• an adjustment mechanism (3);
• and
• measuring mechanisms disposed on both sides of said adjustment mechanism (3), wherein said adjustment mechanism (3) can adjust the distance between two groups of said measuring mechanisms, wherein said measuring mechanism includes:
• a panel structure (1), wherein:
• said panel structure (1) includes a bottom cover (101) close to said adjustment mechanism (3), wherein two first support seats (105) are symmetrically arranged at one end of the outer surface of said bottom cover (101), a shaft hole (1051) is disposed on said first support seat (105), two slideways (106) are symmetrically arranged at the other end of the outer surface of said bottom cover (101), wherein one end of said slideway (106) is flush with the end of said bottom cover (101):
• said adjustment mechanism (3) includes a first support (301), a support (302) and a driving structure (304), wherein:
• said first support (301) includes a first body (3011), a first shaft (3012) disposed at the first end of said first body (3011), and two first sliding blocks (3013) disposed at the second end of said first body (3011), said first shaft (3012) is articulated in two shaft holes (1051) on one of said bottom covers (101), and said two first sliding blocks (3013) are respectively disposed in said two slideways (106) on the other bottom cover (101);
• said second support (302) includes a second body (3021), a first shaft (3022) disposed at the first end of said second body (3021), and two second sliding blocks (3023) disposed at the second end of said second body (3021), said second shaft (3022) is articulated in two shaft holes (1051) on said bottom covers (101) having said two first sliding block (3013), and said two second sliding blocks (3023) are respectively disposed in said two slideways (106) on the other bottom cover (101) articulated with said first shaft (3012), the middle part of said second body (3021) is articulated with the middle part of said first body (3011) through a main shaft (303), said first shaft (3012) and said second shaft (3022) are positioned on the same side of said main shaft (303);
• said driving structure (304) is capable of driving said first support (301) and said second support (302) to rotate around said main shaft (303);
• and
• said slideway (106) is T-shaped, correspondingly, said first sliding block (3013) and said second sliding block (3023) include a T-shaped key (30131) configured to be operably received by the said slideway (106);
• said panel structure (1) includes a top cover (102) away from said adjustment mechanism (3);
• a plurality of rows of elastic column holes (1021) are arranged on said top cover (102) in array;
• column seats (103) in one-to-one correspondence with said elastic column holes (1021) are arranged inside said panel structure (1) in array, wherein:
• the first end of said column seat (103) is fixed on said bottom cover (101);
• and
• the second end of said column seat (103) is positioned inside said elastic column hole (1021) and is flush with the outer surface of said top cover (102);
• and
• a measuring column (2), wherein:
• said measuring column (2) includes an elastic column (201), a spring (202), a piezoelectric material (203) and a control circuit board (204);
• said elastic column (201) includes a column body (2011), a column cap (2012) and a ring seat (2013), said column body (2011) is a hollow structure and encircles the outside of said column seat (103);
• said ring seat (2013) is connected to one end of said column body (2011) and is slidably set around the outside of said column seat (103), wherein:
• the outer diameter of said ring seat (2013) is larger than the outer diameter of said elastic column hole (1021);
• said column cap (2012) is disposed at the other end of said column body (2011);
• said piezoelectric material (203) is disposed inside said column body (2011) and abuts against the second end of said column seat (103);
• and
• said spring (202) is disposed inside said column body (2011), wherein:
• one end of said spring (202) abuts against said piezoelectric material (203);
• the other end of said spring (202) abuts against said column cap (2012), when said elastic column (201) is not subjected to an external force;
• and
• said spring (202) is in a naturally-elongated state, and said control circuit board (204) is disposed on said panel structure (1) and electrically connected with each piezoelectric material (203).