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CN-224223764-U - Angle-adjustable pneumatic screwdriver head joint structure

CN224223764UCN 224223764 UCN224223764 UCN 224223764UCN-224223764-U

Abstract

The utility model relates to the technical field of pneumatic screwdrivers, in particular to an angle-adjustable pneumatic screwdriver head joint structure. The pneumatic motor comprises a main body, a pneumatic motor and an output arm, wherein the main body and the pneumatic motor are connected through an angle adjusting assembly, the angle adjusting assembly is used for adjusting the deflection angle of the output arm relative to the main body, a driving shaft is arranged at the output end of the pneumatic motor, a screw barrel is arranged on the outer wall of the pneumatic motor, a shaft plate is arranged on the output arm, the shaft plate is rotatably arranged in the screw barrel, two groups of torque limiting assemblies are symmetrically arranged between the shaft plate and the driving shaft, the torque limiting assemblies are used for adjusting the output torque of the output arm, a screw sleeve is arranged on the screw barrel in a threaded manner, and the screw sleeve is propped against a pressure head of the torque limiting assembly. According to the utility model, the flexible adjustment of the angle of the head of the screwdriver and the accurate control of the torsion are realized through the cooperation between the structures, so that the operation adaptability and the use safety are effectively improved.

Inventors

  • LU YUNHUA
  • WU BIN
  • LI JUNQIANG

Assignees

  • 无锡麦克马丁定扭矩装配工具有限公司

Dates

Publication Date
20260512
Application Date
20250519

Claims (6)

  1. 1. The pneumatic screwdriver head joint structure capable of adjusting the angle comprises a main body (1), a pneumatic motor (2) and an output arm (5), and is characterized in that the main body (1) and the pneumatic motor (2) are connected through an angle adjusting component, and the angle adjusting component is used for adjusting the deflection angle of the output arm (5) relative to the main body (1); The output end of the pneumatic motor (2) is provided with a driving shaft (13), the outer wall of the pneumatic motor (2) is provided with a screw cylinder (3), the output arm (5) is provided with a shaft plate (12), the shaft plate (12) is rotationally arranged in the screw cylinder (3), two groups of torque limiting assemblies (8) are symmetrically arranged between the shaft plate (12) and the driving shaft (13), and the torque limiting assemblies (8) are used for adjusting the output torque of the output arm (5); The screw barrel (3) is provided with a screw sleeve (4) in a threaded manner, and the screw sleeve (4) is propped against a pressure head (805) of the torque limiting assembly (8).
  2. 2. The angle-adjustable pneumatic screwdriver head joint structure according to claim 1, wherein the angle adjusting assembly comprises a fin plate (9), a half gear (10) and a full gear (11), one end of the fin plate (9) is symmetrically arranged on the pneumatic motor (2), the other end of the fin plate (9) is rotatably arranged on the main body (1), the half gear (10) is arranged on the outer wall of the pneumatic motor (2), the full gear (11) is rotatably arranged on the main body (1), and the half gear (10) and the full gear (11) are in gear tooth meshing states.
  3. 3. The angle-adjustable pneumatic screwdriver head joint structure according to claim 1, wherein the torque limiting assembly (8) comprises a ball seat (801), a ball head (802), a ball rod (803), a spring (804), a pressing head (805) and a sleeve (806), the sleeve (806) is inlaid on the shaft plate (12), the ball rod (803) and the pressing head (805) are slidably arranged in the sleeve (806), one end of the spring (804) is abutted to the ball rod (803), the other end of the spring (804) is abutted to the pressing head (805), and the ball head (802) is arranged on the ball rod (803).
  4. 4. The angle-adjustable head joint structure of a pneumatic screwdriver according to claim 3, wherein the ball seat (801) is inlaid on the driving shaft (13), and the ball head (802) abuts against the ball seat (801).
  5. 5. The angle-adjustable pneumatic screwdriver head joint structure according to claim 1, wherein the outer wall of the screw cylinder (3) is in threaded engagement with the screw sleeve (4), and the screw sleeve (4) is in sliding contact with the inner wall of the screw cylinder (3).
  6. 6. The angle-adjustable pneumatic screwdriver head joint structure according to claim 1, wherein the end of the output arm (5) is provided with a flange (6), and mounting holes (7) are formed in the flange (6) at equal intervals.

Description

Angle-adjustable pneumatic screwdriver head joint structure Technical Field The utility model relates to the technical field of pneumatic screwdrivers, in particular to an angle-adjustable pneumatic screwdriver head joint structure. Background In the existing pneumatic screwdriver technology, the problem that the angle of a tool is not adjustable or inconvenient to adjust usually exists in the using process, and particularly when the tool works in a narrow or special working condition space, the conventional pneumatic screwdriver structure is difficult to meet the requirement of multi-angle operation. Meanwhile, in the fastening process of the bolt or the screw, the lack of an effective torsion control mechanism also easily causes excessive tightening force, thereby damaging the connected piece or the screw itself. Therefore, the pneumatic screwdriver head joint structure with adjustable angle is provided for solving the existing problems. Disclosure of utility model The utility model aims to solve the problems in the background art and provides an angle-adjustable pneumatic screwdriver head joint structure. The pneumatic screwdriver head joint structure comprises a main body, a pneumatic motor and an output arm, wherein the main body and the pneumatic motor are connected through an angle adjusting component, and the angle adjusting component is used for adjusting the deflection angle of the output arm relative to the main body; The output end of the pneumatic motor is provided with a driving shaft, the outer wall of the pneumatic motor is provided with a screw barrel, the output arm is provided with a shaft plate, the shaft plate is rotatably arranged in the screw barrel, two groups of torque limiting assemblies are symmetrically arranged between the shaft plate and the driving shaft, and the torque limiting assemblies are used for adjusting the output torque of the output arm; the screw barrel is provided with a screw sleeve in a threaded manner, and the screw sleeve is propped against the pressing head of the torque limiting assembly. Preferably, the angle adjusting component is composed of a fin plate, a half gear and a full gear, one end of the fin plate is symmetrically arranged on the pneumatic motor, the other end of the fin plate is rotatably arranged on the main body, the half gear is arranged on the outer wall of the pneumatic motor, the full gear is rotatably arranged on the main body, and the half gear and the full gear are in gear tooth meshing states. Preferably, the torsion limiting assembly is composed of a ball seat, a ball head, a ball rod, a spring, a pressure head and a sleeve, the sleeve is inlaid on the shaft plate, the ball rod and the pressure head are slidably arranged in the sleeve, one end of the spring abuts against the ball rod, the other end of the spring abuts against the pressure head, and the ball head is arranged on the ball rod. Preferably, the ball seat is embedded on the driving shaft, and the ball head abuts against the ball seat. Preferably, the outer wall of the screw barrel is in threaded engagement with the screw sleeve, and the screw sleeve is in sliding contact with the inner wall of the screw barrel. Preferably, the end of the output arm is provided with a flange, and the flange is provided with mounting holes at equal intervals. Compared with the prior art, the utility model has the following beneficial effects: The angle-adjustable pneumatic screwdriver head joint structure can enable a screwdriver head to be used to be arranged on an output arm through a flange structure in the use process, then an angle adjusting component works to finish the angle adjusting action of the screwdriver head, when the angle adjusting component works, a micro-motor structure arranged in a main body drives a full gear to rotate, and a pneumatic motor is driven to deflect on the main body through the meshing action of gear teeth between the full gear and a half gear; Further, when the pneumatic motor is connected with an external air source to drive the output arm to rotate, the torque limiting assembly is used for controlling the working torque of the output arm, and when the bolt is screwed to the designated torque, a slipping action is generated between the output arm and a driving shaft of the pneumatic motor, so that the screw is prevented from being damaged due to overlarge torque; When the torque limiting assembly works and does not reach the designated torque, the ball rod is driven by the elasticity of the spring to prop against the ball seat, at the moment, the driving shaft rotates through the ball head driving shaft plate, when the designated torque is reached or exceeded, the ball head is separated from the ball seat under the action of the force, at the moment, the ball head slides against the ball rod in the sleeve, at the moment, sliding action is generated between the shaft plate and the driving shaft, the driving shaft idles, so that the transmission torque is re