Autonomous lock linkage opening and closing system for double doors of cargo compartment

Abstract

The independent lock linkage opening and closing system comprises a door frame, a main door and an auxiliary door, the outer side of the main door and the outer side of the auxiliary door are connected with the corresponding sides of the door frame through hinges, a rotatable auxiliary door lock main shaft is arranged on the auxiliary door, and a sliding block lock catch, a spring torque rod and a linkage locking mechanism are arranged on the auxiliary door lock main shaft; a lock groove structure meshed with the sliding block lock catch is arranged on the door frame, a spring is arranged between the spring torque rod and the auxiliary door, automatic switching of door opening and closing is achieved, and the spring enables the sliding block to generate self-locking force. One end of the linkage locking mechanism is arranged corresponding to the main door, the linkage locking mechanism is pressed by the main door, and the sliding block lock catch is locked through the main shaft. The cargo compartment side-by-side door autonomous lock linkage opening and closing system is reasonable in design, the upper lock pin and the lower lock pin of the auxiliary door are in linkage, and the opening and closing doors are automatically locked; the main door lock and the auxiliary door lock are associated, and double-door locking can be achieved when the main door is closed; operation actions are reduced, and locking is reliable; and the structure is simple, and the cost is relatively low.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle cargo compartment door locks, and particularly to a self-locking linkage opening and closing system for a pair of opening cargo compartments. Background Art

[0002] With the rise of e-commerce sales, the last-mile logistics has penetrated into every corner of urban and rural areas; there is a strong demand for functions such as frequent opening and closing of the pickup door, convenient use, not easily damaged by misoperation, and not accidentally opened; the traditional lock mechanism is simple, mostly a bolt lock mechanism, which is difficult and time-consuming to operate; and there are problems such as the pickup door being accidentally opened during vehicle driving and the loss of goods.

[0003] For example, a vehicle compartment door locking mechanism disclosed in Patent CN2713091Y includes a lock body device, a pair of locking devices, a compartment door latching device, and a pair of door bolt opening / closing devices respectively on the left and right compartment doors. Each door bolt opening / closing device includes a linkage plate, a linkage turntable, a square shaft, a bolt handle support cover, a positioning sleeve, a bolt handle stop ear, a bolt, a bolt foot, a bolt buckle, and a bolt handle. One end of the linkage plate is connected to the locking device, and the other end is connected to the linkage turntable. The square shaft is vertically fixed at the center of the linkage turntable, and its end passes through the compartment door panel. The bolt handle support cover is fixed on the compartment door panel. The fixed sleeve and the bolt handle stop ear are sleeved on the square shaft. The bolt is pivotally arranged on the compartment door panel. A pair of bolt feet extends from its two ends. A pair of bolt buckles is fixed on the compartment door frame and cooperates with the bolt feet. The front end of the bolt handle is hinged to the bolt, and the rear end is placed on the bolt handle support cover; the bolt-type lock mechanism has a complex operation. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the present invention provides a self-locking linkage opening and closing system for a pair of opening cargo compartments to achieve the purpose of reducing operation actions and reliable locking.

[0005] To solve the above technical problems, the technical solution adopted by the present invention is as follows:

[0006] The self-locking linkage opening and closing system for a pair of opening cargo compartments includes a door frame, a main door, and a sub-door. The outer sides of the main door and the sub-door are respectively connected to the corresponding sides of the door frame through hinges. A rotatable sub-door lock main shaft is provided on the sub-door. A slider lock catch, a spring torque rod, and a linkage locking mechanism are provided on the sub-door lock main shaft; a lock groove structure meshing with the slider lock catch is provided on the door frame. A spring is provided between the spring torque rod and the sub-door to realize automatic switching of opening and closing the door. The spring causes the slider to generate a self-locking force; one end of the linkage locking mechanism is correspondingly arranged for the main door. The linkage locking mechanism is pressed by the main door, and the slider lock catch is locked through the main shaft.

[0007] Further or preferably:

[0008] A main door lock is provided between the main door and the sub-door.

[0009] The main door lock is a bolt lock structure provided on the main door.

[0010] The main shaft of the secondary door lock is a rotating shaft structure that penetrates up and down on the back of the secondary door.

[0011] A cross beam is provided on the back of the secondary door. The main shaft of the secondary door lock passes through the cross beam. A hook is provided on the cross beam. One end of the spring is connected to the spring torque rod, and the other end of the spring is connected to the hook.

[0012] The slider lock catch includes a swing arm. One end of the swing arm is connected to the main shaft of the secondary door lock, and the other end of the swing arm is provided with a convex tooth structure.

[0013] The lock groove structure is a card slot with an inclined surface provided at the lower part of the door frame.

[0014] The linkage locking mechanism is a linkage rod. One end of the linkage rod is fixedly connected to the main shaft of the secondary door lock, and the other end of the linkage rod is arranged corresponding to the inner edge of the main door.

[0015] A vertical reinforcing beam is provided at the inner edge of the main door. The other end of the linkage rod is a bent structure that can be stuck on the vertical reinforcing beam.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] The self-locking linkage opening and closing system of the double-opening door of the cargo compartment is reasonably designed. The upper and lower lock pins of the secondary door are linked, and the door is automatically locked when opened and closed; the main and secondary door locks are associated, and the double doors can be locked when the main door is closed; the operation actions are reduced, and the locking is reliable; and the structure is simple and the cost is relatively low. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The following briefly describes the content expressed in each drawing of this specification and the marks in the drawings:

[0019] Figure 1 It is a schematic diagram of the double-opening door and lock system of the present invention.

[0020] Figure 2 It is a schematic diagram of the lock system of the present invention.

[0021] Figure 3 It is a diagram of the open and closed states of the secondary door lock system of the present invention.

[0022] In the figure:

[0023] 1. Main door, 2. Secondary door, 3. Door hinge, 4. Main door lock, 5. Secondary door lock system, 6. Main shaft of secondary door lock, 7. Spring torque rod, 8. Spring, 9. Linkage locking mechanism, 10. Slider lock catch, 11. Lock groove structure. DETAILED DESCRIPTION OF THE INVENTION

[0024] The following will further describe in detail the specific embodiments of the present invention with reference to the accompanying drawings and through the description of the embodiments.

[0025] As Figures 1 to 3 shown, the micro cargo compartment double-leaf door independent lock linkage opening and closing system includes a door frame, a main door and a sub-door. The main door and the sub-door are arranged opposite to each other left and right. The outer sides of the main door and the sub-door are connected to the corresponding sides of the door frame through hinges, and a main door lock is provided between the main door and the sub-door; preferably, the main door lock is a bolt lock structure provided on the main door.

[0026] A sub-door lock system linked to the main door is provided on the sub-door, and the sub-door lock system provides independent opening and closing limit for the sub-door; the sub-door lock system mainly includes a sub-door lock main shaft, a slider lock catch, a spring torque rod, a linkage locking mechanism, a spring and a lock groove structure.

[0027] A rotatable sub-door lock main shaft is provided on the sub-door, and a slider lock catch, a spring torque rod and a linkage locking mechanism are fixedly provided on the sub-door lock main shaft; the slider lock catch, the spring torque rod and the linkage locking mechanism can rotate together with the main shaft.

[0028] A lock groove structure meshing with the slider lock catch is provided on the door frame, and a spring is provided between the spring torque rod and the sub-door to realize automatic switching of opening and closing the door. The spring makes the slider generate a self-locking force; one end of the linkage locking mechanism is arranged corresponding to the main door, and the linkage locking mechanism is pressed by the main door, and the slider lock catch is locked through the main shaft.

[0029] The sub-door lock main shaft is a rotating shaft structure penetrating up and down on the back of the sub-door, with a simple structure and being stable and reliable. A cross beam is provided on the back of the sub-door, the sub-door lock main shaft passes through the cross beam, a hook is provided on the cross beam, one end of the spring is connected to the spring torque rod, and the other end of the spring is connected to the hook.

[0030] The slider lock catch includes a swing arm, one end of the swing arm is connected to the sub-door lock main shaft, and a convex tooth structure is provided at the other end of the swing arm; the lock groove structure is a slotted groove with an inclined surface provided at the lower part of the door frame. The slider lock catch and the lock groove are obliquely meshed to realize free opening and closing and position holding of the sub-door.

[0031] The linkage locking mechanism is a linkage rod, one end of the linkage rod is fixedly connected to the sub-door lock main shaft, and the other end of the linkage rod is arranged corresponding to the inner edge of the main door. Further, a vertical strengthening beam is provided at the inner edge of the main door, and the other end of the linkage rod is a bent structure that can be stuck on the vertical strengthening beam. The end of the linkage rod corresponds to the inner edge of the main door, and the system is locked to achieve the locking effect.

[0032] The cargo compartment double-leaf door independent lock linkage opening and closing system of the present invention is reasonably designed. The upper and lower lock pins on the sub-door are linked, and the door is automatically locked when opening and closing; the main and sub-door locks are associated, and the double doors can be locked when the main door is closed; the operation actions are reduced, and the locking is reliable; and the structure is simple and the cost is relatively low.

[0033] Preferred embodiments of the present invention are:

[0034] like Figure 1 As shown, the main door 1 and the auxiliary door 2 rotate around their respective hinges 3 to realize the door opening and closing action; the main door lock 4 is installed on the main door 1, and when the main door 1 is closed, the main door lock 4 and the auxiliary door 2 latch are locked, and the main door 1 is locked; the auxiliary door lock system 5 provides the auxiliary door 2 with an autonomous opening and closing limit, as shown in detail Figure 2 As shown;

[0035] like Figure 2 As shown, the auxiliary door lock main shaft 6 is installed on the auxiliary door 2, penetrates from top to bottom, and can rotate freely; the spring torque rod 7, the linkage locking mechanism 9, and the slider lock buckle 10 are installed on the auxiliary door lock main shaft 6 and rotate accordingly; one end of the spring 8 is fixed on the auxiliary door, and the other end is connected to the spring torque rod 7; the lock slot structure 11 is installed on the lower door frame, and the position is adjustable;

[0036] Specific principle: When the auxiliary door 2 is opened and closed around the hinge 3, the auxiliary door lock system 5 installed thereon moves together, and the slider lock catch 10 hits the lock slot structure 11, guided by its inclined surface, to achieve engagement and separation between the two (such as Figure 3 ); the spring 8 pulls the spring torque rod, and through the auxiliary door lock main shaft, the force acts on the slider lock buckle ⑩, so that it generates pressure on the lock slot, achieving the effect of the auxiliary door limit holding force, and the size of the limit holding force can be changed by adjusting the force value of the spring 8; the process of opening and closing the auxiliary door 2 can achieve autonomous locking, and the door limit and opening can be achieved without additional action;

[0037] The linkage locking mechanism 9 extends out of the inner side of the main door 1. When the main door 1 is closed, it presses the linkage locking mechanism 9, so that the auxiliary door lock main shaft 6 cannot rotate, and then the slider lock 10 and the lock groove structure 11 cannot be separated, so that the auxiliary door is locked; the main door lock 4 pin is inserted into the auxiliary door 2 and cannot be opened. At this point, the entire system is locked and cannot be opened;

[0038] Unlocking the main door lock 9 can realize opening of the main door 1, and at the same time, the auxiliary door lock system 5 is unlocked, and the auxiliary door 2 can be opened and closed freely.

[0039] The upper and lower lock pins of the auxiliary door of the present invention are linked, and the door can be automatically locked when opened or closed; the main and auxiliary door locks are linked, and the double doors can be locked when the main door is closed; it is autonomous and convenient, has only two operating actions, is simple and reliable in structure, and has relatively low cost.

[0040] The above is only an explanation of the preferred embodiments of the present invention, and the above technical features can be arbitrarily combined to form multiple embodiments of the present invention.

[0041] The present invention has been described exemplarily in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited by the above-mentioned manner. As long as various non-substantive improvements are made by adopting the concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. A self-locking linkage opening and closing system for cargo compartment double doors, comprising a door frame, a main door and a secondary door, wherein the outer sides of the main door and the secondary door are connected to the corresponding sides of the door frame through hinges, characterized in that: The auxiliary door is provided with a rotatable auxiliary door lock main shaft, and the auxiliary door lock main shaft is provided with a slider lock, a spring torque rod and a linkage locking mechanism; a lock groove structure engaged with the slider lock is provided on the door frame, and a spring is provided between the spring torque rod and the auxiliary door to realize autonomous switching of the door opening and closing, and the spring enables the slider to generate a self-locking force; one end of the linkage locking mechanism is set corresponding to the main door, the linkage locking mechanism is pressed by the main door, and the slider lock is locked through the main shaft.

2. The cargo compartment double door self-locking linkage opening and closing system as claimed in claim 1, characterized in that: A main door lock is arranged between the main door and the auxiliary door.

3. The cargo compartment double door self-locking linkage opening and closing system as claimed in claim 2, characterized in that: The main door lock is a latch lock structure arranged on the main door.

4. The cargo compartment double door self-locking linkage opening and closing system as claimed in claim 1, characterized in that: The auxiliary door lock main shaft is a rotating shaft structure that runs through the back of the auxiliary door from top to bottom.

5. The cargo compartment double door self-locking linkage opening and closing system as claimed in claim 1, characterized in that: A crossbeam is arranged on the back of the auxiliary door, and the auxiliary door lock main shaft passes through the crossbeam. A hook is arranged on the crossbeam, one end of the spring is connected to the spring torque rod, and the other end of the spring is connected to the hook.

6. The cargo compartment double door self-locking linkage opening and closing system as claimed in claim 1, characterized in that: The slider lock comprises a swing arm, one end of which is connected to the auxiliary door lock main shaft, and the other end of which is provided with a convex tooth structure.

7. The cargo compartment double door self-locking linkage opening and closing system as claimed in claim 6, characterized in that: The lock slot structure is a slot with an inclined surface arranged at the lower part of the door frame.

8. The cargo compartment double door self-locking linkage opening and closing system as claimed in claim 1, characterized in that: The linkage locking mechanism is a linkage rod, one end of which is fixedly connected to the auxiliary door lock main shaft, and the other end of the linkage rod is arranged corresponding to the inner edge of the main door.

9. The cargo compartment double door self-locking linkage opening and closing system as claimed in claim 8, characterized in that: A vertical reinforcing beam is arranged on the inner edge of the main door, and the other end of the linkage rod is a bending structure that can be clamped on the vertical reinforcing beam.

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