Side door locking mechanism of double-flap open type carriage

Abstract

The invention provides a side door locking mechanism of a double-flap open type carriage and belongs to the technical field of vehicle parts. The side door locking mechanism comprises a carriage part and a double-flap door, wherein the double-flap door comprises a first door body and a second door body; the first door body corresponds to the upper part of a carriage cavity; the second door body corresponds to the lower part of the carriage cavity; the upper end of a traction rod is matched with a slide rail; the quantity of the side door locking mechanisms is equal to that of hoisting arms; the side door locking mechanism comprises an acting cylinder, a lock hook and a spring; the acting cylinder is fixedly arranged on the side face of the box body; the tail end of an acting cylinder column is narrowly provided with an acting cylinder column pull rod with the diameter less than that of the cylinder column; one end of the lock hook is sleeved on the acting cylinder column pull rod and the middle part of the lock hook is connected to the carriage body to form a lock tongue cavity; a lock hook head is formed at the other end of the lock hook and the spring is sleeved on the acting cylinder column pull rod; one end of the spring is supported on the acting cylinder column and the other end of the spring is supported on the lock hook; and a lock tongue is formed at the lower end of the hoisting arm. The side door locking mechanism has the advantages of few movement transmission links, reliability for locking and opening, rapidness for locking and simple structure.

Description

technical field [0001] The invention belongs to the technical field of vehicle components, and in particular relates to a side door locking mechanism of a double-wing open compartment. Background technique [0002] The concept of the side door of the double-fold open carriage mentioned above can be cleared up by reading the Chinese invention patent authorization announcement number CN1298565C (folding rolling display stand extension mechanism), because the content of the specification and its drawings in this CN1298565C clearly reveals the side doors of the double-flap opening carriage, and also explains the use of vehicles equipped with such carriage side doors. [0003] Regarding the technical information of the side door locking mechanism of the wing-opening carriage, a typical example is the "side door locking mechanism" recommended by the utility model patent authorization announcement number CN2747355Y. Although this patent method can objectively reflect pages 4-5 on p...

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Problems solved by technology

[0003]Technical information about the side door locking mechanism of the wing-opening carriage, typically such as the "side door locking mechanism" recommended by the utility model patent authorization announcement number CN2747355Y, the Although the patented method can objectively reflect the technical effects mentioned in the 4-5 lines on page 2 of the manual, its complex structure and action transmission links are mostly shortcomings, so both manufacturing and installation are very troublesome, especially after a period of time. After use, the locking force between the lock hook and the pull hook needs to be adjusted, so the maintenance during use is very troublesome. For details, please refer to the second paragraph of page 3 of the patent specification

[0004] Through the analysis of the applicant, the shortcoming of the above-mentioned patent scheme is caused by the unreasonable selection of the locking position of the wing-opening side door, because the scheme taught by the patent is A draw hook is fixed at both ends of the lower edge of the side door (patent called side door) in the length direction, and a lock hook buckle foot is formed on each draw hook, and the lock hook buckle foot is matched with the lock hook buckle foot by the locking device installed on the bottom beam of the carriage. To achieve the release or locking of the locking hook clasp foot, and because the locking device is only used as an executive part or a transition part, it cannot move by itself, so the patent solution is equipped with a hydraulic device for driving the locking hook of the locking device. The action of the locking device will buckle or release the shackle buckle (the last paragraph on page 1 of the instruction manual to the third line on page 2)

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