Frame structure of game fence

1 . A frame structure of a game fence, including a set of bottom connecting rods ( 1 ), a set of upper connecting rods ( 2 ), and a set of support connecting rods ( 3 ), each bottom connecting rod ( 1 ) is hinged with a respective bottom end of one of the support rods ( 3 ) and each upper connecting rod ( 2 ) is hinged with a respective top end of one of the support rods ( 3 ) to form the frame structure;

a first control joint ( 4 ) is provided in the middle of one of the upper connecting rods ( 2 ), allowing two ends of said upper connecting rod ( 2 ) to move toward each other or away from each other, wherein a second control joint ( 5 ) is provided in the middle of one of the bottom connecting rods ( 1 ), allowing two ends of said bottom connecting rod ( 1 ) to move toward each other or away from each other, causing the frame structure to contract or expand, and after the frame structure is completely expanded, said one bottom connecting rod ( 1 ) can be locked by the second control joint ( 5 );

wherein the second control joint ( 5 ) includes a first connecting base ( 51 ) and a second connecting base ( 52 ) that are mutually hinged, said one bottom connecting rod ( 1 ) is structurally hollow, said one bottom connecting rod ( 1 ) includes a first bar member ( 11 ) connected to the first connecting base ( 51 ) and said one bottom connecting rod ( 1 ) includes a second bar member ( 12 ) connecting to the second connecting base ( 52 ), the first connecting base ( 51 ) is movably provided with a locking member ( 53 ) that can move relative to the first connecting base ( 51 ) between a position where the locking member ( 53 ) partially extends into the second bar member ( 12 ) and a position where the locking member ( 53 ) withdraws from the second bar member ( 12 ), and after the locking member ( 53 ) partially extends into the second bar member ( 12 ), the locking member ( 53 ) can lock the first connecting base ( 51 ) and the second connecting base ( 52 ), thereby locking the first bar member ( 11 ) and the second bar member ( 12 );

wherein a top spring ( 54 ) is also provided within the second control joint ( 5 ) for applying elastic force to the locking member ( 53 ) so that the locking member ( 53 ) can move in a direction of local extension into an interior of the second bar member ( 12 );

wherein the top spring ( 54 ) is located inside the first bar member ( 11 ), the top spring being entirely exposed within the interior of the first bar member ( 11 ), the first bar member ( 11 ) is provided with a pin that can partially pass through the first bar member ( 11 ), one end of the top spring ( 54 ) is in contact with the pin, and the other end of the top spring is elastically in contact with a terminal end of the locking member ( 53 ) that faces away from the second bar member ( 12 ).

2 . The frame structure of a game fence according to claim 1 , wherein the locking member ( 53 ) is provided with a driving portion ( 531 ) that is exposed outside the first connecting base ( 51 ), the locking member ( 53 ) being movable relative to the first connecting base ( 51 ) between a position where the driving portion ( 531 ) is in contact with an end wall of the second bar member ( 12 ) and a position where the driving portion ( 531 ) is away from the end wall of the second bar member ( 12 );

when the driving portion ( 531 ) is in contact with the end wall of the second bar member ( 12 ), the locking member ( 53 ) partially extends into the second bar member ( 12 ); and

wherein an avoidance hole ( 511 ) is provided at a position of the first connecting base ( 51 ) corresponding to a movement path of the driving portion ( 531 ).

3 . The frame structure of a game fence according to claim 2 , wherein a top wall of the driving portion ( 531 ) is provided with a plurality of anti-slip strips ( 532 ).

4 . The frame structure of a game fence according to claim 1 , wherein the first connecting base ( 51 ) is provided with a first through slot ( 512 ) for inserting an end of the first bar member ( 11 ) and the second connecting base ( 52 ) is provided with a second through slot ( 521 ) for inserting an end of the second bar member ( 12 ), the first connecting base ( 51 ) being swingable relative to the second connecting base ( 52 ) between a position where the first through slot ( 512 ) is connected with the second through slot ( 521 ) and a position where the first through slot ( 512 ) is disconnected from the second through slot ( 521 ); and

the end of the first bar member ( 11 ) being inserted into the first through slot ( 512 ) and fixed by bolts or rivets, the second bar member ( 12 ) being inserted into the second through slot ( 521 ) and fixed by bolts or rivets.

5 . The frame structure of a game fence according to claim 1 , wherein top and bottom ends of one of the support rods ( 3 ) are respectively provided with a first connector ( 6 ) and a second connector ( 7 ), the first connector ( 6 ) is provided with a first pivot groove ( 61 ) for pivotable connection with one of the ends of the one upper connecting rod ( 2 ), and the second connector ( 7 ) is provided with a second pivot groove ( 71 ) for pivotable connection with one of the ends of the one bottom connecting rod ( 1 ).

6 . The frame structure of a game fence according to claim 5 , wherein two opposite sides of the first pivot groove ( 61 ) are provided with first clamping blocks ( 62 ) for elastic fit with an outer wall of the one upper connecting rod ( 2 ), and two opposite sides of the second pivot groove ( 71 ) are provided with second clamping blocks ( 72 ) for elastic fit with an outer wall of the one bottom connecting rod ( 1 ).

7 . The frame structure of a game fence according to claim 5 , wherein a bottom wall of the second connector ( 7 ) is provided with a gasket ( 8 ).