Cross wrenches tire wrench are usually equipped with cl […]
Cross wrenches tire wrench are usually equipped with clamping shanks at one or both ends of the shank to apply external force to the shank to apply external force, which can turn the bolt or nut to hold the opening or sleeve hole of the bolt or nut. When using an external force on the shank along the direction of thread rotation, the bolt or nut can be turned. The cross wrench is a hand tool that uses the principle of lever to turn bolts, screws, nuts and other threads to hold the openings or sleeve fasteners of bolts or nuts. It is mainly used to disassemble locking screws on automobile tires. The cross wrench generally consists of two rods welded together in a cross shape. This structure cannot slide, the force of both hands is unstable, the torque of one hand is not enough, it is not convenient to store, and the volume is large, which is not convenient for packaging, carrying and storing .
At present, there are two rods that can slide, but there is no lock pin, which is very unsafe during use. At present, there are many improved wrench structures, which mainly include a main action rod and a side effect rod. Among them, a transverse through hole is provided in the thickened middle section of the main action rod to allow the side effect rod to be inserted and form a cross state. A longitudinal deep hole communicating with the through hole is provided on the side of the lateral through hole for inserting a pressing button in cooperation with an elastic member and a positioning member, and the middle section of the pressing button is a thin diameter section , And the lower section is a locking section; through the above structural design, in conjunction with the first and second clamping grooves provided on the side effect rod, the plug-in type of the two acting rods can be easily adjusted and locked to achieve Expected utility and safety performance.
The wrench of this structure can be disassembled, so that the volume is greatly reduced during packaging, but the positioning structure is more complicated, and the production and processing are more troublesome. The utility model comprises a handle, a sliding rod head, a sliding rod, a connecting rod and a sleeve, and is characterized in that: a plastic sleeve is embedded on the handle, a bush is arranged in the plastic sleeve, and a handle connecting rod is arranged in the handle. This kind of wrench is positioned by the steel ball spring, the structure is relatively simple, but it is easy to wear and deform after a long time, which makes the positioning of the sliding rod not firm enough. Therefore, the structure needs further improvement.
The technical problem to be solved by the utility model is to provide a cross wrench which is simple in structure, detachable, and can be used in a safe and reliable manner in view of the above technical situation. A cross wrench includes a main rod and a cross rod. The central part of the main rod is provided with a shaft hole through which the cross rod is inserted. A positioning pin is retractably positioned in the positioning slot, and a first spring that extends the head of the locking pin from the positioning slot is supported between the locking pin and the bottom of the positioning slot. A ring-shaped limiting concave ring is formed on both ends, and a locking portion formed in cooperation with the limiting concave ring is formed in the middle of the lock pin. When the head of the lock pin is pushed out by the first spring, the lock The locking portion of the pin is positioned in cooperation with the limiting concave ring.