Counter lock structure and two pedals capable of being folded and locked on wheelchair

Abstract

The invention discloses a counter lock structure and two pedals capable of being folded and locked on a wheelchair. The counter lock structure comprises a lock body and a lock rod, wherein the lock body comprises a lock shell, a movable lock core, a reset spring and an unlocking push rod, the lock rod is provided with a lock head of which diameter is larger than that of a rod part, the lock shell is provided with an open V-shaped lock opening, the lock head is clamped in a small end of the V-shaped lock opening after entering a big end of the V-shaped lock opening, the lock shell is internally provided with a lock core sliding groove which is in communication with the V-shaped lock opening, the movable lock core is slidably installed in the lock core sliding groove, the lock core sliding groove is internally provided with the reset spring which pushes the movable lock core to the V-shaped lock opening, the movable lock core which moves to the V-shaped lock opening fixes and clamps the lock head in the small end of the V-shaped lock opening, the lock shell is provided with the unlocking push rod which stretches into the lock shell, and the unblocking push rod is utilized to drive the movable lock core to overcome the action force of the reset spring so as to leave the V-shaped lock opening. The two pedals achieve lock fixing and lock unblocking by being provided with the lock body and the lock rod respectively. According to the counter lock structure and the two pedals capable of being folded and locked on the wheelchair, lock countering and lock unblocking are very convenient, and the lock fixing is firm.

Description

technical field [0001] The invention relates to the technical field of locking devices and wheelchairs, in particular to a lock structure and a foldable and lockable two-pedal pedal on the wheelchair. Background technique [0002] Wheelchairs are means of transportation for physically disabled and handicapped people, with the help of wheelchairs for physical exercise and participation in social activities. Ordinary wheelchairs are generally composed of four parts: wheelchair frame, wheels, brake device and seat. For non-lower amputee patients, in order to increase the comfort of riding, there are left and right pedals installed in front of the wheelchair through the left and right pedal brackets. , to prevent the feet from dangling. [0003] At present, the structure of wheelchairs can be divided into two types: foldable and traditional non-foldable. The emergence of foldable wheelchairs is mainly to reduce storage space. Among them, the foldable wheelchair requires that t...

AI Technical Summary

Problems solved by technology

After opening, the two pedals are required to be fixed. At present, the fixing methods used by various manufacturers are different, but it is difficult to satisfy the convenience of fixing and untwisting and the fixing firmness at the same time.

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