Wrenches T type wrench are usually made with clamps on […]
Wrenches T type wrench are usually made with clamps on one or both ends of the handle to apply external force to the handle to apply external force to turn the bolt or nut to hold the bolt or nut opening or sleeve. When in use, an external force is applied to the shank along the direction of thread rotation to turn the bolt or nut. The cross wrench is a hand tool that uses the principle of leverage to turn bolts, screws, nuts and other threads to hold the openings or sleeves of bolts or nuts. It is mainly used to disassemble the locking screws on the car tires. The traditional The cross wrench generally includes two rods welded together in a crisscross 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 also two poles that can slide, but there is no lock pin, which is very unsafe during use. At present, many improved wrench structures have also appeared, such as the Chinese utility model patent "Separable Cross Wrench Structure" with the patent number CN200820150528.7, which mainly includes a main acting rod and a side effect rod. Among them, the main acting rod is thickened. The middle section is provided with a horizontal through hole for inserting the side rods and forming a cross state. On the side of the horizontal through hole, there is also a longitudinal deep hole communicating with the through hole for matching with an elastic member and a A push button is inserted into the positioning member, and the middle section of the push button is a thin-diameter section, and the lower section is a locking section; through the above-mentioned structural design, it is matched with the first and second clamps on the side effect lever It can easily adjust and lock the plug-in type of the two acting rods to achieve the expected practical and safe performance.
The wrench with this structure can be disassembled, so that the volume is greatly reduced during packaging, but the positioning structure is more complicated and the manufacturing process is more troublesome. There is also a Chinese utility model patent "Split Fast Cross Wrench" with the patent number CN201020268368.3, which includes a handle, a sliding rod head, a sliding rod, a post and a sleeve, and is characterized in that: the handle is inlaid with a plastic sleeve and a plastic sleeve There is a bushing inside and a handle extension rod inside the handle. This kind of wrench is positioned by a steel ball spring, and the structure is relatively simple, but it is prone to wear and deformation over time, which makes the sliding rod positioning insufficient. Therefore, the structure needs further improvement.
The technical problem to be solved by the utility model is to provide a cross wrench with simple structure, detachable, safe and reliable use in view of the above technical status. The technical solution adopted by the utility model to solve the above-mentioned technical problems is: a cross wrench, comprising a main rod and a cross rod, the middle part of the main rod is provided with a shaft hole for the cross rod to be inserted, and is characterized in that: the middle part of the main rod The lateral side is recessed with a positioning groove that is perpendicular to the shaft hole and communicates with the inner wall of the shaft hole. A lock pin is telescopically limited and arranged in the positioning groove. The head of the lock pin is supported between the lock pin and the bottom of the positioning groove. The first spring protruding from the positioning groove, the middle and both ends of the cross bar are formed with annular limiting concave rings, and the middle of the lock pin is formed with a locking part that cooperates with the limiting concave ring to lock and locate. When the lock pin is in the first When the head is pushed out under the action of a spring, the locking part of the lock pin is coordinated and positioned with the limiting concave ring.