Mechanism for preventing mistaken locking during door opening

Abstract

The utility model belongs to the technical field of safety boxes, and relates to a door opening mistaken locking prevention mechanism which is arranged on a cabinet door, is matched with a lock plate arranged on a cabinet body to work, and comprises a shifting block, a main lock rod, a spring piece and a mistaken locking prevention plate which are arranged on the inner side face of the cabinet door, the shifting block is rotationally arranged on the cabinet door, and the shifting block is in linkage with a handle rotationally arranged on the outer surface of the cabinet door; the shifting block is connected with a kidney-shaped hole vertically formed in the anti-misoperation lock plate in a matched mode, the anti-misoperation lock plate is fixedly connected with the main lock rod, and the inner end of the main lock rod and the inner end of the spring piece are connected with the linkage assembly. A lock rod guide plate is further arranged on the inner surface of the cabinet door, and the lock rod guide plate guides reciprocating motion of the main lock rod in the horizontal direction. According to the anti-error-locking mechanism, a spring is replaced by the spring piece, and a cylindrical pin is replaced by the sheet metal part, so that the structure is simplified, and the installation is simpler. All parts are produced independently, and the product quality and the delivery date are well guaranteed.

Description

Technical Field

[0001] This utility model belongs to the field of safe technology and relates to a door opening anti-accidental locking mechanism. Background Technology

[0002] Currently, the spring + cylindrical pin anti-locking mechanism used in the market cannot be effectively fixed on its own, so it must be used in conjunction with sheet metal parts for positioning and fixation. From a manufacturing perspective, springs, cylindrical pins, and sheet metal parts belong to different processing types and require various equipment for processing. Summary of the Invention

[0003] To address the aforementioned problems, this utility model provides a door opening anti-accidental locking mechanism. This anti-accidental locking mechanism uses a spring sheet, which simplifies the structure and makes installation easy.

[0004] According to the technical solution of this utility model: a door opening anti-mislocking mechanism is set on the cabinet door and works in conjunction with the lock plate set on the cabinet body. The feature is that it includes a toggle block, a main lock rod, a spring plate and an anti-mislocking plate set on the inner side of the cabinet door. The toggle block is rotatably set on the cabinet door and is linked with a handle rotatably set on the outer surface of the cabinet door.

[0005] The toggle block is connected to the vertically arranged waist-shaped hole on the anti-mislocking plate. The anti-mislocking plate is fixedly connected to the main locking rod. The inner end of the main locking rod is connected to the linkage assembly, and the inner end of the spring plate is fixed to the cabinet door.

[0006] The inner surface of the cabinet door is also provided with a lock rod guide plate, which guides the horizontal reciprocating motion of the main lock rod. When the main lock rod extends to its limit position, it enters the main lock hole, and the trigger point of the spring plate is constrained by the failure point formed on the outer surface of the lock plate. The auxiliary lock rod extends into the auxiliary lock hole of the lock plate. When the main lock rod retracts to its limit position, it disengages from the main lock hole, the auxiliary lock rod disengages from the auxiliary lock hole, the trigger point of the spring plate is freed from the constraint of the failure point, and one end of the trigger point bounces outward relative to the cabinet door. At this time, the bent edge of the spring plate limits the anti-mislocking plate.

[0007] As a further improvement of this utility model, the linkage component includes multiple transmission plates that are rotatably disposed on the inner surface of the cabinet door. The multiple transmission plates are arranged vertically along the inner wall of the cabinet door. One end of each transmission plate is connected to the linkage plate, and the other end of each transmission plate is connected to the corresponding auxiliary locking rod or main locking rod.

[0008] As a further improvement of this utility model, the anti-mislocking plate is fixedly connected to the main locking rod by rivets.

[0009] As a further improvement of this utility model, the inner end of the spring sheet is fixedly connected to the cabinet door by a spring sheet fixing screw.

[0010] As a further improvement of this utility model, the bent edge of the spring sheet is constructed at the outer end of the sheet body, and the bent edge bends vertically upward from the lower end of the spring sheet.

[0011] As a further improvement of this utility model, the outer end of the spring sheet tends to move away from the cabinet door.

[0012] The technical advantages of this invention are as follows: The anti-locking mechanism uses a spring sheet instead of a spring and sheet metal parts instead of a cylindrical pin, simplifying the structure and making installation easier. All parts are manufactured in-house, ensuring excellent product quality and timely delivery. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] Figure 2 This is a structural diagram of the cabinet door of this utility model in the open state.

[0015] Figure 3 A schematic diagram of the structure with the anti-accidental locking function enabled.

[0016] Figure 4 for Figure 3 KK sectional view.

[0017] Figure 5 for Figure 4 A magnified view of point M in the middle.

[0018] Figure 6 A structural diagram to prevent accidental locking function failure.

[0019] Figure 7 for Figure 6 Sectional view along the EE direction.

[0020] Figure 8 for Figure 7 A magnified view of point N in the middle.

[0021] Figure 9 A 3D view showing the state of the anti-lock function failure. Detailed Implementation

[0022] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings.

[0023] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. The described embodiments are merely some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0024] Figure 1-9 The components include cabinet body 1, lock plate 1-1, cabinet door 2, lock rod guide plate 2-1, lever 2-2, rivet 2-3, main lock rod 2-4, spring plate 2-5, anti-mislock plate 2-6, spring plate fixing screw 2-7, handle 2-8, linkage plate 2-9, transmission plate 2-10, etc.

[0025] The cabinet body 1 and door panel 2 in this utility model are the same as those in a conventional safe. To achieve the anti-mislock function, a failure point B1 is designed on the lock plate 1-1 on the cabinet body 1, and a trigger point B2 is designed on the door panel 2. When the trigger point B2 and the failure point B1 are separated (door open), the anti-mislock function is activated; when the trigger point B2 and the failure point B1 are in contact (door close), the anti-mislock function is deactivated.

[0026] like Figure 1-8 As shown, this utility model is a door opening anti-mislocking mechanism, which is set on the cabinet door 2 and works in conjunction with the lock plate 1-1 set on the cabinet body 1. It includes a toggle block 2-2, a main lock rod 2-4, a spring plate 2-5 and an anti-mislocking plate 2-6 set on the inner side of the cabinet door 2. The toggle block 2-2 is rotatably set on the cabinet door 2, and the toggle block 2-2 is linked with the handle 2-8 rotatably set on the outer surface of the cabinet door 2.

[0027] The lever 2-2 is connected to the vertically set waist-shaped hole on the anti-mislock plate 2-6. The anti-mislock plate 2-6 is fixedly connected to the main locking rod 2-4. The inner end of the main locking rod 2-4 is connected to the linkage component. The inner end of the spring plate 2-5 is fixed to the cabinet door 2.

[0028] The inner surface of cabinet door 2 is also provided with a lock rod guide plate 2-1, which guides the horizontal reciprocating motion of the main lock rod 2-4. When the main lock rod 2-4 extends to its limit position, it enters the main lock hole C1, and the trigger point B2 of the spring plate 2-5 is constrained by the failure point B1 formed on the outer surface of the lock plate 1-1. The auxiliary lock rod extends into the auxiliary lock hole A1 of the lock plate 1-1. When the main lock rod 2-4 retracts to its limit position, it disengages from the main lock hole C1, the auxiliary lock rod disengages from the auxiliary lock hole A1, and the trigger point B2 of the spring plate 2-5 is freed from the constraint of the failure point B1. One end of the trigger point B2 bounces outward relative to cabinet door 2. At this time, the bent edge of the spring plate 2-5 limits the anti-mislocking plate 2-6.

[0029] The linkage assembly includes multiple transmission plates 2-10 that are rotatably mounted on the inner surface of the cabinet door 2. The multiple transmission plates 2-10 are arranged vertically along the inner wall of the cabinet door 2. One end of each transmission plate 2-10 is connected to a linkage plate 2-9, and the other end of each transmission plate 2-10 is connected to a corresponding secondary locking rod or main locking rod 2-4.

[0030] The anti-mislocking plate 2-6 is fixedly connected to the main locking rod 2-4 by rivets 2-3.

[0031] The inner end of the spring plate 2-5 is fixedly connected to the cabinet door 2 by the spring plate fixing screw 2-7.

[0032] The bent edge of the spring sheet 2-5 is located at the outer end of the sheet body, and the bent edge bends vertically upward from the lower end of the spring sheet 2-5.

[0033] The outer ends of spring plates 2-5 tend to move away from cabinet door 2.

[0034] like Figure 3-5 As shown, the anti-mislock mechanism is activated: rotating handle 2-8 drives the lever 2-2, which in turn drives the main locking rod 2-4 and the anti-mislock plate 2-6 to move to the left, opening the door panel 2. At this time, the failure point B1 is disengaged from the trigger point B2, and the spring plate 2-5 is no longer constrained by the failure point B1 and bounces outward. The bent edge on the spring plate 2-5 restricts the anti-mislock plate 2-6 from moving to the right, and the anti-mislock mechanism is activated. At this time, handle 2-8 cannot be rotated.

[0035] like Figure 6-8 As shown, the anti-lock failure occurs when the door panel 2 is closed until the trigger point B2 and the failure point B1 are fully engaged. At this time, the spring plate 2-5 is constrained by the failure point B1 and moves downward until the bent edge is lower than the plane of the anti-lock plate 2-6, thus the anti-lock failure occurs. At this time, turning the handle 2-8 drives the toggle block 2-2, which in turn drives the main locking rod 2-4 and the anti-lock plate 2-6 to move to the right, locking the door panel 2.

[0036] To reduce the impact of machining and assembly errors on the accuracy of anti-lock triggering, the screw mounting holes of spring plate 2-5 are designed as oblong holes, which can be finely adjusted in position during actual assembly to achieve precise triggering.

[0037] Finally, it should be noted that the above specific embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although this utility model has been described in detail with reference to examples, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A door opening anti-mislocking mechanism, which is installed on the cabinet door (2) and works in conjunction with a lock plate (1-1) installed on the cabinet body (1), characterized in that: Includes a lever (2-2), a main locking rod (2-4), a spring plate (2-5), and an anti-mislocking plate (2-6) disposed on the inner side of the cabinet door (2). The lever (2-2) is rotatably disposed on the cabinet door (2), and the lever (2-2) is linked with a handle (2-8) rotatably disposed on the outer surface of the cabinet door (2). The toggle block (2-2) is connected to the waist-shaped hole vertically set on the anti-mislock plate (2-6). The anti-mislock plate (2-6) is fixedly connected to the main locking rod (2-4). The inner end of the main locking rod (2-4) is connected to the linkage component. The inner end of the spring plate (2-5) is fixed to the cabinet door (2). The inner surface of the cabinet door (2) is also provided with a lock rod guide plate (2-1), which guides the horizontal reciprocating motion of the main lock rod (2-4); when the main lock rod (2-4) extends to the limit position, the main lock rod (2-4) extends into the main lock hole (C1), and the trigger point (B2) of the spring plate (2-5) is constrained by the failure point (B1) formed on the outer surface of the lock plate (1-1), and the auxiliary lock rod extends into the lock plate. In the secondary lock hole (A1) of (1-1); when the main lock rod (2-4) retracts to the limit position, the main lock rod (2-4) disengages from the main lock hole (C1), the secondary lock rod disengages from the secondary lock hole (A1), the trigger point (B2) of the spring plate (2-5) disengages from the constraint of the failure point (B1), and one end of the trigger point (B2) springs outward relative to the cabinet door (2). At this time, the bent edge of the spring plate (2-5) forms a limit on the anti-mislocking plate (2-6).

2. The door opening anti-mislocking mechanism as described in claim 1, characterized in that: The linkage component includes multiple transmission plates (2-10) that are rotatably mounted on the inner surface of the cabinet door (2). The multiple transmission plates (2-10) are arranged vertically along the inner wall of the cabinet door (2). One end of the transmission plate (2-10) is connected to the linkage plate (2-9), and the other end of the transmission plate (2-10) is connected to the corresponding auxiliary locking rod or main locking rod (2-4).

3. The door opening anti-mislocking mechanism as described in claim 1, characterized in that: The anti-mislocking plate (2-6) is fixedly connected to the main locking rod (2-4) by rivets (2-3).

4. The door opening anti-mislocking mechanism as described in claim 1, characterized in that: The inner end of the spring sheet (2-5) is fixedly connected to the cabinet door (2) by the spring sheet fixing screw (2-7).

5. The door opening anti-mislocking mechanism as described in claim 1, characterized in that: The bent edge of the spring sheet (2-5) is located at the outer end of the sheet body, and the bent edge is bent vertically upward from the lower end of the spring sheet (2-5).

6. The door opening anti-mislocking mechanism as described in claim 1, characterized in that: The outer end of the spring sheet (2-5) tends to move away from the cabinet door (2).

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