Box body door lock structure and tool box applying same

Abstract

The utility model relates to a box door lock structure which comprises a cam rod arranged at the top of a box and provided with a cam part at one end, a lock opening connected with the other end of the cam rod and used for rotating the cam rod, a first support for supporting the cam rod, linkage rods arranged at the rear end of the box and arranged on the left side and the right side respectively, and a guide support arranged on a top plate. The linkage rod is provided with a lock hook corresponding to a drawer lock catch in the box body, one end of the driving rod is connected with the upper end of the linkage rod, the other end of the driving rod is overlapped with the upper end of the linkage rod, and the driving rod is synchronously subjected to radial force of the cam part; a lever shaft enabling the driving rod to be rotationally connected with the second support is arranged between the two ends of the driving rod, then one lock opening is used for driving the two linkage rods, the opening force is distributed in a balanced mode, the unbalance problem when the tool box is opened is effectively avoided, and the overall stability and safety are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hardware, in particular to the technical field of a box door lock structure and a tool box applied thereto. Background Art

[0002] Traditional toolboxes, more specifically chests of drawers, typically feature a lock on one side. This is also a common design feature on desk sideboards. However, for wider toolboxes, such as those exceeding one meter, having a lock on only one side can lead to imbalance when opening. Furthermore, wider toolboxes often feature two drawers on both sides, some with separate locks on each side.

[0003] In other words, both single-drawer and double-drawer cabinets require two linkage rods to lock the cabinet. However, these two linkage rods require two locks, which increases the complexity and cost of the toolbox. Not only does it require two operations to open the door during daily use, but it also makes maintenance and replacement of the locks more cumbersome. Utility Model Content

[0004] In order to overcome the above problems, the present invention proposes a box door lock structure and a tool box for its application, which aims to realize the function of operating the linkage rods on both sides simultaneously with one operation.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A box door lock structure includes a cam rod disposed on the top of the box and having a cam portion at one end, a lock port connected to the other end of the cam rod and rotating the cam rod, and a first support supporting the cam rod;

[0007] It also includes connecting rods respectively arranged on the left and right sides of the rear end of the box body and a guide support arranged on the top plate, wherein the connecting rods are provided with lock hooks corresponding to the drawer locks in the box body;

[0008] It also includes a driving rod, one end of which is connected to the upper end of the connecting rod and the other end is superimposed and synchronously subjected to the radial force of the cam portion, and a second support supporting the driving rod. A lever shaft is provided between the two ends of the driving rod to enable it to be rotatably connected to the second support.

[0009] Compared with the existing technology, this case uses two driving rods connected to the connecting rod to make the other ends overlap with each other, and uses the cam rod to make the overlapping parts of the driving rods synchronously receive the radial force of the cam part, and then use one lock to drive the two connecting rods. By evenly distributing the opening force, the imbalance problem when the toolbox is opened is effectively avoided, and the overall stability and safety are improved.

[0010] In a preferred embodiment, the cam portion is provided with a cylindrical head, which can further increase the force-bearing surface.

[0011] In a preferred embodiment, the second supports at the driving rods on both sides are an integrated structure, which ensures that the lever rotations of the two driving rods are synchronized, thereby improving the overall stability.

[0012] In some embodiments, the first support and the second support are fixed to the top plate.

[0013] In some embodiments, the linkage rod includes two parallel linkage plates and a plurality of connecting plates connecting the linkage plates, and the locking hook is disposed on the connecting plates.

[0014] In a preferred embodiment, the connecting plate is a U-shaped structure extending toward the box body.

[0015] In some embodiments, a driving slot is provided at the upper end of the connecting rod plate, and the driving rod passes through the driving slot and is connected to the connecting rod.

[0016] In some embodiments, the driving rod is a composite lever including a lever plate connected to the second support, an upturned edge end stacked thereon, and a downturned edge end connected to the linkage rod.

[0017] A tool box, comprising the box door lock structure as described above, a top plate, a box body, a decorative cover, and a back plate;

[0018] It also includes side drawers respectively arranged on the left and right sides of the box body and / or wide drawers arranged across the connecting rods on both sides.

[0019] A tool box, comprising the box door lock structure as described above, a top plate, a box body, a decorative cover, and a back plate;

[0020] The box also includes side drawers and storage cavities respectively arranged on both sides of the box body, and a wide drawer arranged at the upper end of the side drawer across the connecting rods on both sides. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall appearance of a toolbox in this case;

[0022] Figure 2 This is an exploded view of a toolbox in this case;

[0023] Figure 3 It is a cross-sectional view of a toolbox in this case;

[0024] Figure 4 This is a schematic diagram of a linkage rod in a box door lock structure in this case;

[0025] Figure 5This is a schematic diagram of a box door lock structure in the locked state;

[0026] Figure 6 yes Figure 5 A partial enlarged view of the middle A;

[0027] Figure 7 yes Figure 5 A partial enlarged view of point B in the middle;

[0028] Figure 8 This is a schematic diagram of a box door lock structure in the unlocked state;

[0029] Figure 9 yes Figure 8 A partial enlarged view of point C in the middle;

[0030] Figure 10 yes Figure 8 A partial enlarged view of point D in the middle;

[0031] Figure 11 This is a schematic diagram of a toolbox in Example 2 of this case;

[0032] Figure 12 This is a schematic diagram of a linkage rod in a box door lock structure in Example 2 of this case. DETAILED DESCRIPTION

[0033] The following examples further illustrate the features of the present invention and other related features to facilitate understanding by those skilled in the art:

[0034] It should be noted that the words "front", "rear", "left", "right", "up" and "down" used in the following description refer to directions in the accompanying drawings, and the words "bottom" and "top", "inside" and "outside" refer to directions toward or away from the geometric center of a specific component, respectively.

[0035] It should be further clarified that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediary, or internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0036] For example 1, please refer to Figure 1, is a schematic diagram of a toolbox incorporating a door lock structure in this embodiment. The toolbox includes side drawers 200 disposed on the left and right sides of a box body 100. The side drawers 200 can be of equal size or have different designs depending on the needs. They can also be a chest-of-drawers design with multiple layers of drawers, without specific limitations. A wide drawer 300 is located above the side drawers 200, spanning the two side drawers.

[0037] Please refer to Figure 2 The box body 100 is provided with a top plate 400 on the top of which a decorative cover 500 is provided. A back plate 600 is provided at the rear, which provides the appearance and support of the box body 100. The side drawer 200 can slide within the box body 100 via a slide rail 210, which is a common technical means in the industry and will not be described in detail.

[0038] Please combine Figure 2 and Figure 6 The door lock structure of this embodiment includes a cam rod 1 disposed at the top of the housing 100, that is, at the lower end of the top plate 400. The cam rod 1 is provided with a cam portion 11. The cam portion 11 is formed by bending the cam rod 1 toward the rear of the housing 100 to form a cylindrical cam effect. Preferably, a cylindrical head 12 is provided on the cam portion 11 to further increase the load-bearing surface.

[0039] The other end of the cam rod 1 is connected to a locking opening 13 , that is, the front end of the box body 100 , and the cam rod 1 is driven to rotate by the rotation of the locking opening 13 .

[0040] The cam rod 1 needs support when working, and a first support 14 for supporting the cam rod 1 is provided between the two ends of the cam rod 1. Figure 3 , the first support 14 is fixed to the top plate 400 .

[0041] Please refer to Figures 2 to 4 , further comprising connecting rods 2 respectively provided on the left and right sides of the rear end of the box body 100, the connecting rod 2 is positioned and guided up and down by the guide support 21 provided on the top plate 400, please refer to Figure 7 The linkage rod 2 is provided with a lock hook 22 corresponding to the drawer lock 201 in the box body.

[0042] Specifically, please refer to Figure 4 and Figure 7The linkage rod 2 comprises two parallel linkage plates 23, with a plurality of connecting plates 24 disposed between the two linkage plates 23. The number of connecting plates 24 can be adjusted based on the number of drawers, and the locking hooks 22 are mounted on the connecting plates 24. Preferably, the connecting plates 24 are U-shaped structures extending toward the cabinet 100. When closing, the linkage rod 2 descends under its own weight to lock the drawer. During this descent, the U-shaped structure of the connecting plates 24 can smoothly abut against the bottom plate 101 of the cabinet 100, thereby securing the drawer. Furthermore, a driving slot 25 is provided at the upper end of the linkage plate 23.

[0043] As the main innovation of this case, the linkage of the cam rod 1 and the two connecting rods 2 is described below. Figure 2 and Figure 6 , and also includes a driving rod 3 with one section connected to the upper end of the connecting rod 2, that is, connected to the driving groove 25 as described above, and the other end is superimposed and synchronously subjected to the radial force of the cam portion 11.

[0044] Please refer to Figure 2 and Figure 3 , the drive rod 3 is provided with a second support 31, and a lever shaft 32 is provided between the two ends of the drive rod 3, which is rotatably connected to the second support 31. Preferably, the second support 31 is an integrated structural design, fixed to the top plate 400, to ensure that the lever rotation of the two drive rods 3 is synchronized, thereby improving the overall stability. In other words, the second support 31 is in a fixed state, and the drive rod 31 rotates relative to the second support 31 through the lever shaft 32 to form a lever effect, thereby converting the radial force of the cam portion 11 into a lifting force for the linkage rod 2. In the following description, the second support 31 is omitted in the figure for the convenience of describing the drive rod 3.

[0045] Specifically, please refer to Figure 2 and Figure 6 The driving rod 3 is a composite lever including a lever plate 33 connected to the second support 31, an upturned edge 34 stacked thereon, and a downturned edge 35 connected to the connecting rod 2, which can realize lever operation in a narrow space.

[0046] In this way, the present invention uses one lock 13 to drive two connecting rods 2, and effectively avoids the imbalance problem when the box is opened by evenly distributing the opening force, thereby improving the overall stability and safety.

[0047] The following is an example of its working status, please refer to Figures 5 to 7 It is a schematic diagram of the locked state. When locked, the cam portion 11 drives the cylindrical head 12 to an upward position. At this time, the upward end 34 of the driving rod 3 is in a released state, that is, there is no radial force of the cam portion 11. The connecting rod 2 descends under its own weight to complete the locking operation. The connecting plate 24 abuts against the bottom 101 of the box body 100 to stop it.

[0048] Unlock status, please refer to Figures 8 to 10 When unlocking, the cam portion 11 drives the cylindrical head 12 to a downward position. At this time, the upturned edge 34 of the driving rod 3 is under pressure, that is, the radial force of the cam portion 11 causes the upturned edge 34 to be superimposed with force at the lower end. At the same time, the lever action of the driving rod 3 is used to lift the connecting rod 2 to complete the unlocking operation, and the connecting plate 24 at the bottom 101 of the box body 100 is also released from the abutment state.

[0049] In Example 2, the same parts as in Example 1 will not be described repeatedly. Figure 11 and Figure 12 In the second embodiment, the inner sides of the box 100 are provided with side drawers 200 and a storage cavity 700, respectively, and wide drawers 300 that span the upper ends of the side drawers 200 and the storage cavity 700 and the connecting rods 2 on both sides. In this case, the connecting plate 24 of the connecting rod 2 at the storage cavity 700 corresponds to only one wide drawer 300. Its height can be adjusted according to the height of the storage cavity 700.

[0050] The case of a toolbox in this case illustrates a door lock structure of a box in this case, but it does not mean that the door lock structure in this case is only used for toolboxes. It is also applicable to boxes with double linkage rod structures such as office boxes, medical boxes, accessory boxes, etc. for other purposes. The door lock structure of the box in this case is not limited by the function of the box.

[0051] As mentioned above, this case protects a box door lock structure and a toolbox for its application. All technical solutions that are the same or similar to those in this case should be deemed to fall within the scope of protection of this case.

Claims

1. A box door lock structure, characterized in that: It comprises a cam rod (1) arranged on the top of the box body (100) and provided with a cam portion (11) at one end, a lock (13) connected to the other end of the cam rod (1) and rotating the cam rod (1), and a first support (14) supporting the cam rod (1); The utility model further comprises connecting rods (2) respectively arranged on the left and right sides of the rear end of the box body (100), and a guide support (21) arranged on the top plate (400), wherein the connecting rod (2) is provided with a lock hook (22) corresponding to the drawer lock (201) in the box body (100); The invention also includes a driving rod (3) with one end connected to the upper end of the connecting rod (2) and the other end superimposed thereon and synchronously subjected to the radial force of the cam portion (11), and a second support (31) supporting the driving rod (3). A lever shaft (32) is provided between the two ends of the driving rod (3) to connect the driving rod with the second support (31) for rotation.

2. A box door lock structure according to claim 1, characterized in that: The cam portion (11) is provided with a cylindrical head (12).

3. A box door lock structure according to claim 1, characterized in that: The second support (31) at the driving rod (3) is an integrated structure.

4. A box door lock structure according to claim 3, characterized in that: The first support (14) and the second support (31) are fixed to the top plate (400).

5. The box door lock structure according to claim 1, characterized in that: The connecting rod (2) comprises two parallel connecting rod plates (23) and a plurality of connecting plates (24) connecting the connecting rod plates (23), and the locking hook (22) is arranged on the connecting plates (24).

6. A box door lock structure according to claim 5, characterized in that: The connecting plate (24) is a U-shaped structure extending toward the box body (100).

7. A cabinet door lock structure according to claim 5, characterized in that: The upper end of the connecting rod plate (23) is provided with a driving groove (25), and the driving rod (3) passes through the driving groove (25) and is connected to the connecting rod (2).

8. The box door lock structure according to claim 1, characterized in that: The driving rod (3) is a composite lever comprising a lever plate (33) connected to the second support (31), an upwardly warped edge (34) superimposed thereon, and a downwardly warped edge (35) connected to the linkage rod (2).

9. A tool box, characterized in that: It comprises the box door lock structure according to any one of claims 1 to 8, a top plate (400), a box body (100), a decorative cover (500), and a back plate (600); It also includes side drawers (200) respectively arranged on the left and right sides of the box body (100) and / or wide drawers (300) arranged across the linkage rods (2) on both sides.

10. A tool box, characterized in that: It comprises the box door lock structure according to any one of claims 1 to 8, a top plate (400), a box body (100), a decorative cover (500), and a back plate (600); It also includes side drawers (200) and a storage cavity (700) respectively arranged on both sides of the box body (100), and a wide drawer (300) arranged at the upper end of the side drawer (200) across the two side linkage rods (2).

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