Arm strength exercising apparatus

Abstract

An arm strength exercising apparatus includes two resistance arms, characterized by further including a resistance mechanism, the resistance mechanism includes a resistance member and a pull rope, the resistance member is arranged in one of the resistance arms, and the pull rope is connected between the resistance member and the other resistance arm; the resistance member provides resistance for the closing of the two resistance arms. By arranging the resistance member inside the tubular resistance arms, the space occupied by the overall arm strength exercising apparatus can be reduced, and the space utilization can be improved. In addition, the influence on the exercise effect due to contact with the resistance member during exercise can be avoided.

What is claimed is: 
     
         1 . An arm strength exercising apparatus, comprising two resistance arms, upper ends of the two resistance arms being rotatably connected in an opposite opening and closing manner through an adapter mechanism, characterized by further comprising a resistance mechanism, wherein the resistance arms are of tubular structures, the resistance mechanism comprises a resistance member and a pull rope, the resistance member is arranged in one of the resistance arms, and the pull rope is connected between the resistance member and the other resistance arm; and in a closing process of the two resistance arms, the resistance member can be pulled by the pull rope, and the resistance member provides resistance for the closing of the two resistance arms. 
     
     
         2 . The arm strength exercising apparatus according to  claim 1 , characterized in that the adapter mechanism comprises an inner adapter and an outer adapter, the inner adapter is fixedly connected to the upper end of one of the resistance arms, the outer adapter is fixedly connected to the upper end of the other resistance arm, the outer adapter is rotatably sleeved on an outer side of the inner adapter, the outer adapter is provided with a guide structure for positioning and guiding the pull rope, one end of the pull rope is connected to the resistance member, and the other end is threaded out from an upper port of the one of the resistance arms and passes through the guide structure before being connected to the other resistance arm. 
     
     
         3 . The arm strength exercising apparatus according to  claim 2 , characterized in that the guide structure is an arc-shaped guide groove for inserting the pull rope or a guide groove wheel rotatably arranged on an outer circumferential surface of the outer adapter and having an annular groove. 
     
     
         4 . The arm strength exercising apparatus according to  claim 2 , characterized in that the outer adapter is rotatably arranged on the inner adapter through a bearing, a first annular step is formed on a side of an outer circumferential surface of the inner adapter, the outer adapter is formed with an adapter hole matched with the inner adapter, a second annular step opposite to the first annular step is formed on an inner circumferential surface of the adapter hole, a snap spring groove is formed on the outer circumferential surface of the inner adapter and/or the inner circumferential surface of the adapter hole, a snap spring is arranged in the snap spring groove, and an outer ring of the bearing is limited between the second annular step and the snap spring and/or an inner ring of the bearing is limited between the first annular step and the snap spring. 
     
     
         5 . The arm strength exercising apparatus according to  claim 2 , characterized in that one of the resistance arms is connected to the inner adapter through a first connector, the other resistance arm is connected to the outer adapter through a second connector, the first connector comprises a first holding ring with a notch and two first clamping plates extending from two ends of the notch of the first holding ring to two sides of the inner adapter, the first holding ring surrounds the upper end of the one of the resistance arms, and the two first clamping plates are fixedly connected to the inner adapter through first fasteners crossing the first clamping plates and the inner adapter; and the second connector comprises a second holding ring with a notch and two second clamping plates extending from two ends of the notch of the second holding ring to two sides of the outer adapter, the second holding ring surrounds the upper end of the other resistance arm, and the two second clamping plates are fixedly connected to the outer adapter through second fasteners crossing the second clamping plates and the outer adapter. 
     
     
         6 . The arm strength exercising apparatus according to  claim 5 , characterized in that the first holding ring is reinforced and connected by a third fastener crossing the first holding ring and the one of the resistance arms, and the second holding ring is reinforced and connected by a fourth fastener crossing the second holding ring and the other resistance arm. 
     
     
         7 . The arm strength exercising apparatus according to  claim 5 , characterized by further comprising a circular protective shell covering the adapter mechanism, wherein the protective shell is fixedly connected to the outer adapter, a long notch avoiding the first connector is formed on an outer circumferential surface of the protective shell, and an arc-shaped shielding plate covering the notch is arranged on the first connector. 
     
     
         8 . The arm strength exercising apparatus according to  claim 1 , characterized in that the adapter mechanism comprises a first adapter and a second adapter, the first adapter is fixedly connected to the upper end of one of the resistance arms, the second adapter is fixedly connected to the upper end of the other resistance arm, the first adapter is rotatably connected to the second adapter through an adapter shaft, the second adapter is provided with a guide groove for positioning and guiding the pull rope, one end of the pull rope is connected to the resistance member, and the other end is threaded out from the upper port of one of the resistance arms and passes through the guide groove before being connected to the other resistance arm. 
     
     
         9 . The arm strength exercising apparatus according to  claim 8 , characterized in that the second adapter comprises two outer adapter pieces and at least one inner adapter piece, the at least one inner adapter piece is clamped between the two outer adapter pieces, the at least one inner adapter piece is formed with an arc-shaped outer circumferential surface for supporting the pull rope, and the two outer adapter pieces extend beyond the arc-shaped outer circumferential surface, so that the two outer adapter pieces and the arc-shaped outer circumferential surface surround the guide groove. 
     
     
         10 . The arm strength exercising apparatus according to  claim 8 , characterized in that the first adapter comprises two clamping arms extending to two sides of the second adapter, the adapter shaft crosses the two clamping arms and the second adapter, the adapter shaft cannot rotate relative to the two clamping arms, the second adapter can rotate relative to the adapter shaft, the adapter shaft is sleeved with a wear-resistant sleeve, and the wear-resistant sleeve is located between the two clamping arms and in rotatable contact with the second adapter. 
     
     
         11 . The arm strength exercising apparatus according to  claim 1 , characterized in that the resistance member is an oil cylinder or an air cylinder, a cylinder body of the oil cylinder or the air cylinder is fixedly arranged in the resistance arm, and the pull rope is connected to a piston rod of the oil cylinder or the air cylinder. 
     
     
         12 . The arm strength exercising apparatus according to  claim 11 , characterized in that a blocking structure is arranged in the resistance arm, and the cylinder body of the oil cylinder or the air cylinder is mounted from a lower end of the resistance arm and blocked by the blocking structure. 
     
     
         13 . The arm strength exercising apparatus according to  claim 12 , characterized in that the oil cylinder or the air cylinder comprises a resistance adjustment knob arranged at a rear end of the cylinder body and located outside the resistance arm. 
     
     
         14 . The arm strength exercising apparatus according to  claim 1 , characterized in that the resistance member is an elastic member, one end of the elastic member is fixed to the resistance arm, and the other end is connected to the pull rope. 
     
     
         15 . The arm strength exercising apparatus according to  claim 12 , characterized in that the resistance arm comprises a main tube body and a gripping tube, a diameter of the gripping tube is greater than that of the main tube body, an upper end of the gripping tube is fixedly sleeved on a lower end of the main tube body, and the cylinder body of the oil cylinder or the air cylinder is sleeved in the gripping tube and blocked by the lower end of the main tube body. 
     
     
         16 . The arm strength exercising apparatus according to  claim 1 , characterized in that the pull rope is a steel wire rope.