Double-door structure of a cabinet

Abstract

This utility model discloses a double-door structure for a cabinet, relating to the field of furniture manufacturing technology. It includes two sets of door leaf bodies rotatably mounted on the cabinet and a mounting base plate fixedly mounted inside the cabinet. A front door frame is fixedly installed on the side of the mounting base plate near the door, and connecting slots are provided on both sides of the front door frame. The two sets of door leaf bodies are rotatably mounted at the opening of the cabinet. A linkage triangular plate is rotatably mounted on the upper center of the mounting base plate. Two sets of transmission rods are rotatably connected to the linkage triangular plate. A cam swing block is rotatably connected to the end of the transmission rod away from the linkage triangular plate. The cam swing block is rotatably mounted on the mounting base plate, and a transmission rod is rotatably connected to the cam swing block. The transmission rod passes through the connecting slot and is rotatably connected to the door leaf body. This utility model, through the linkage design of the linkage triangular plate, transmission rods, cam swing block, and transmission rod, achieves synchronous opening and closing of the two sets of door leaf bodies, improving operational convenience.

Description

Technical Field

[0001] This utility model relates to the field of furniture manufacturing technology, and in particular to a double-door structure for a cabinet. Background Technology

[0002] In daily life, we often need to store a large number of household items, clothing, bedding, daily tools, and specialized tools. People usually organize and store these items using cabinets, boxes, or other box-like structures.

[0003] Currently, common cabinet structures include storage cabinets, toolboxes, wardrobes, and dressing tables. Typically, a cabinet structure consists of a door and a box. The box has an opening, which is closed by the door. When in use, the door can be opened to store items inside the box, and the door provides relative isolation between the stored items and the outside environment.

[0004] To minimize the space occupied by the doors when opening and closing, cabinets used in space-constrained areas typically employ a double-door design, consisting of two opposing doors, the first and second doors. However, current double-door cabinet structures require separate control for the opening and closing of the first and second doors, making it impossible to coordinate their operation. Users must operate both doors simultaneously with both hands, resulting in relatively low ease of use. Utility Model Content

[0005] This utility model provides a double-door structure for a box, which can solve the problem that the doors in the prior art cannot achieve linkage opening and closing.

[0006] The objective of this utility model can be achieved through the following technical solutions:

[0007] A double-door structure for a box includes two sets of door leaf bodies rotatably mounted on the box and a mounting base plate fixedly mounted inside the box. A front door frame is fixedly installed on the side of the mounting base plate near the box door, and connecting slots are provided on both sides of the front door frame. The two sets of door leaf bodies are rotatably mounted at the opening of the box. A linkage triangular plate is rotatably mounted on the upper center of the mounting base plate. Two sets of transmission rods are rotatably connected to the linkage triangular plate. A cam swing block is rotatably connected to the end of the transmission rod away from the linkage triangular plate. The cam swing block is rotatably mounted on the mounting base plate. A transmission rod is rotatably connected to the cam swing block. The transmission rod passes through the connecting slot and is rotatably connected to the door leaf body.

[0008] Preferably, a spring post is fixedly provided on the mounting base plate, and a tension spring is rotatably connected to the spring post. The end of the tension spring away from the spring post is rotatably connected to the linkage triangle plate.

[0009] Preferably, the upper end of the door leaf body is provided with a door leaf shaft that is rotatably connected to the box body, and the upper part of the door leaf body is provided with a door leaf upper support plate that is connected to the box body.

[0010] Preferably, a door leaf wheel is rotatably mounted on the lower end of the door leaf body, the door leaf wheel is rotatably mounted on the housing, and a lower door leaf support plate is fixedly provided on the lower part of the door leaf body and rotatably connected to the transmission rod.

[0011] Preferably, the cam rocker includes a rocker body, which has a triangular cam structure. The center of the cam is rotatably mounted on the mounting base plate via a rocker pin. A rocker pin is provided at the other two corners of the rocker body, and a rocker pin is provided at a second rocker and a third rocker. The second rocker is rotatably connected to a transmission rod, and the third rocker is rotatably connected to the transmission rod.

[0012] Preferably, the linkage triangle includes a triangle body, the apex of which is rotatably mounted on the mounting base plate via a body pin, and the other two corners of the triangle body are fixedly provided with connecting pins, and the two sets of transmission rods are rotatably connected to the connecting pins on the same side.

[0013] Preferably, a limiting groove is provided on the outer arc side of the triangular plate body near the connecting pin, and two sets of positioning pins that cooperate with the limiting groove are fixedly provided on the mounting base plate.

[0014] Preferably, the tension spring is in a stretched state when the door body is in both the open and closed states.

[0015] Preferably, the upper end of the main body pin is provided with a threaded rod, and a pin locking cap is threadedly installed on the threaded rod.

[0016] Preferably, the connecting pin is provided with a threaded groove, and a spring bolt for connecting the tension spring is threadedly installed in the threaded groove.

[0017] The beneficial effects of this utility model are:

[0018] (1) Through the linkage design of the triangular plate, transmission rod 2, cam swing block and transmission rod 1, the synchronous opening and closing of the two sets of door panels is realized, which improves the convenience of operation.

[0019] (2) The design of the tension spring enables the door body to maintain a stable movement trajectory during opening and closing, reducing shaking and noise. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings.

[0021] Figure 1This is a schematic diagram of the closed state structure of a double-door box body according to this utility model;

[0022] Figure 2 This is a schematic diagram of the double-door structure of a box body in the open state according to this utility model.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Installation base plate; 2. Front door frame; 21. Connecting through groove; 3. Door leaf body; 31. Upper door leaf support plate; 32. Door leaf shaft; 33. Door leaf roller; 34. Lower door leaf support plate; 4. Transmission rod one; 5. Cam swing block; 51. Swing block body; 52. Swing block pin one; 53. Swing block pin two; 54. Swing block pin three; 6. Transmission rod two; 7. Linkage triangle plate; 71. Triangle plate body; 72. Body pin; 73. Connecting pin; 74. Limiting slot; 75. Pin lock cap; 8. Tension spring; 9. Positioning pin; 10. Spring column. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] In the description of this utility model, it should be understood that the terms "upper," "lower," "left," and "right," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or a specific orientational structure and operation. Therefore, they should not be construed as limitations on this utility model. Furthermore, "first" and "second" are only for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "multiple" means two or more.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] Please see Figures 1-2 As shown, this utility model is a double-door structure for a box, including two sets of door leaf bodies 3 rotatably mounted on the box and a mounting base plate 1 fixedly mounted inside the box. A front door frame 2 is fixedly installed on the side of the mounting base plate 1 near the box door, and connecting slots 21 are provided on both sides of the front door frame 2. The two sets of door leaf bodies 3 are rotatably mounted at the opening of the box. A linkage triangular plate 7 is rotatably mounted on the upper middle part of the mounting base plate 1. Two sets of transmission rods 6 are rotatably connected to the linkage triangular plate 7. A cam swing block 5 is rotatably connected to the end of the transmission rod 6 away from the linkage triangular plate 7. The cam swing block 5 is rotatably mounted on the mounting base plate 1. A transmission rod 4 is rotatably connected to the cam swing block 5. The transmission rod 4 passes through the connecting slots 21 and is rotatably connected to the door leaf body 3.

[0029] In an optional embodiment, a spring post 10 is fixedly provided on the mounting base plate 1, and a tension spring 8 is rotatably connected to the spring post 10. The end of the tension spring 8 away from the spring post 10 is rotatably connected to the linkage triangle plate 7.

[0030] It should be noted that spring posts 10 and tension springs 8 are installed on the mounting base plate 1 to provide restoring force, so that the door body 3 maintains a stable movement trajectory during opening and closing, reducing shaking and noise.

[0031] In an optional embodiment, the upper end of the door leaf body 3 is provided with a door leaf shaft 32 that is rotatably connected to the box body, and the upper part of the door leaf body 3 is provided with a door leaf upper support plate 31 that is connected to the box body.

[0032] It should be noted that the door leaf shaft 32 and the upper support plate 31 ensure the stable rotation of the door leaf body 3 and improve the reliability of the structure.

[0033] In an optional embodiment, a door leaf wheel 33 is rotatably mounted on the lower end of the door leaf body 3, and the door leaf wheel 33 is rotatably mounted on the housing. A lower door leaf support plate 34, which is rotatably connected to the transmission rod 4, is fixedly provided on the lower part of the door leaf body 3.

[0034] It should be noted that the door leaf roller 33 and the lower support plate 34 further enhance the stability of the door leaf body 3 and reduce friction and wear during rotation.

[0035] In an optional embodiment, the cam rocker block 5 includes a rocker block body 51, which has a triangular cam structure. The center of the cam is rotatably mounted on the mounting base plate 1 via a rocker block pin 52. A rocker block pin 53 and a rocker block pin 54 are respectively provided at the other two corners of the rocker block body 51. The rocker block pin 53 is rotatably connected to a transmission rod 4, and the rocker block pin 54 is rotatably connected to a transmission rod 6.

[0036] It should be noted that the triangular cam structure of the cam rocker block 5 enables effective transmission between transmission rod 4 and transmission rod 6.

[0037] In an optional embodiment, the linkage triangle 7 includes a triangle body 71. The apex of the triangle body 71 is rotatably mounted on the mounting base plate 1 via a body pin 72. The other two corners of the triangle body 71 are fixedly provided with connecting pins 73. The two sets of transmission rods 6 are rotatably connected to the connecting pins 73 on the same side.

[0038] It should be noted that the linkage triangle plate 7 is the core component of the linkage system, ensuring the synchronous opening and closing of the two sets of door leaf bodies 3.

[0039] In an optional embodiment, a limiting groove 74 is provided on the outer arc side of the triangular plate body 71 near the connecting pin 73, and two sets of positioning pins 9 that cooperate with the limiting groove 74 are fixedly provided on the mounting base plate 1.

[0040] It should be noted that the combination of the limiting slot 74 and the positioning pin 9 restricts the rotation range of the linkage triangle plate 7, thereby improving the safety of the structure.

[0041] In an optional embodiment, the tension spring 8 is in a stretched state in both the open and closed states of the door body 3.

[0042] It should be noted that the tension state of the tension spring 8 ensures that the door body 3 receives a stable restoring force during opening and closing, thus improving the smoothness of operation.

[0043] In an optional embodiment, the upper end of the main body pin 72 is provided with a threaded rod, and a pin locking cap 75 is threadedly installed on the threaded rod.

[0044] It should be noted that the design of the threaded rod and the pin locking cap 75 facilitates the installation and disassembly of the linkage triangle plate 7.

[0045] In an optional embodiment, the connecting pin 73 is provided with a threaded groove, and a spring bolt for connecting the tension spring 8 is threadedly installed in the threaded groove.

[0046] It should be noted that the design of the threaded groove and spring bolt facilitates the connection and adjustment of the tension spring 8 and the linkage triangle plate 7.

[0047] The working principle of this utility model is as follows: the linkage triangle plate 7 is rotatably installed on the mounting base plate 1. As the core component of the entire linkage system, its top corner is fixed by the main body pin 72, and the other two corners are connected to the two sets of transmission rods 6 by the connecting pin 73.

[0048] One end of the transmission rod 6 is connected to the connecting pin 73 of the linkage triangle plate 7, and the other end is connected to the swing block pin 54 of the cam swing block 5, which is responsible for transmitting the rotation of the linkage triangle plate 7 to the cam swing block 5.

[0049] The cam rocker block 5 has a triangular cam structure. Its center is rotatably mounted on the mounting base plate 1 via rocker block pin 52, and the other two corners are connected to transmission rod 4 and transmission rod 6 via rocker block pin 53 and rocker block pin 54, respectively. When transmission rod 6 moves, it drives the cam rocker block 5 to rotate around rocker block pin 52, thereby driving transmission rod 4 to move.

[0050] One end of the transmission rod 4 is connected to the pivot pin 53 of the cam pivot block 5, and the other end passes through the connecting slot 21 of the front door frame 2 and is connected to the door body 3. When the cam pivot block 5 rotates, the transmission rod 4 drives the door body 3 to rotate around the door shaft 32, thereby opening and closing the door.

[0051] The tension spring 8 is connected between the spring post 10 and the linkage triangle plate 7 of the mounting base plate 1. It is used to provide restoring force so that the door body 3 maintains a stable movement trajectory during opening and closing, and provides a certain buffer when the door is closed.

[0052] The above description provides a detailed account of one embodiment of the present invention. However, this description is merely a preferred embodiment and should not be construed as limiting the scope of the present invention. All equivalent variations and improvements made within the scope of the claims of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A double-door structure for a box, characterized in that, The device includes two sets of door leaf bodies (3) rotatably mounted on the box body and a mounting base plate (1) fixedly mounted inside the box body. A front door frame (2) is fixedly installed on the side of the mounting base plate (1) near the box door. Both sides of the front door frame (2) are provided with connecting slots (21). The two sets of door leaf bodies (3) are rotatably mounted at the opening of the box body. A linkage triangle plate (7) is rotatably mounted on the upper middle part of the mounting base plate (1). Two sets of transmission rods (6) are rotatably connected to the linkage triangle plate (7). A cam swing block (5) is rotatably connected to the end of the transmission rod (6) away from the linkage triangle plate (7). The cam swing block (5) is rotatably mounted on the mounting base plate (1). A transmission rod (4) is rotatably connected to the cam swing block (5). The transmission rod (4) passes through the connecting slot (21) and is rotatably connected to the door leaf body (3).

2. The double-door structure of the box body according to claim 1, characterized in that, A spring column (10) is fixedly installed on the mounting base plate (1), and a tension spring (8) is rotatably connected to the spring column (10). The end of the tension spring (8) away from the spring column (10) is rotatably connected to the linkage triangle plate (7).

3. The double-door structure of the box body according to claim 1, characterized in that, The upper end of the door body (3) is provided with a door shaft (32) that is rotatably connected to the box body, and the upper part of the door body (3) is provided with a door upper support plate (31) that is connected to the box body.

4. The double-door structure of the box body according to claim 3, characterized in that, The lower end of the door body (3) is rotatably mounted with a door wheel (33), which is rotatably mounted on the housing. The lower part of the door body (3) is fixedly provided with a door lower support plate (34) that is rotatably connected to the transmission rod (4).

5. The double-door structure of the box body according to claim 1, characterized in that, The cam rocker block (5) includes a rocker block body (51), which has a triangular cam structure. The center of the cam is rotatably mounted on the mounting base plate (1) via a rocker block pin one (52). Rocker block pin two (53) and rocker block pin three (54) are respectively provided at the other two corners of the rocker block body (51). Rocker block pin two (53) is rotatably connected to transmission rod one (4), and rocker block pin three (54) is rotatably connected to transmission rod two (6).

6. The double-door structure of the box body according to claim 2, characterized in that, The linkage triangle plate (7) includes a triangle plate body (71). The top corner of the triangle plate body (71) is rotatably mounted on the mounting base plate (1) via a body pin (72). The other two corners of the triangle plate body (71) are fixedly provided with connecting pins (73). The two sets of transmission rods (6) are rotatably connected to the connecting pins (73) on the same side.

7. The double-door structure of the box body according to claim 6, characterized in that, The outer arc side of the triangular plate body (71) near the connecting pin (73) is provided with a limiting groove (74), and two sets of positioning pins (9) that cooperate with the limiting groove (74) are fixedly provided on the mounting base plate (1).

8. The double-door structure of the box body according to claim 2, characterized in that, When the door body (3) is in the open state and the closed state, the tension spring (8) is in the tension state.

9. The double-door structure of the box body according to claim 6, characterized in that, The upper end of the main body pin (72) is provided with a threaded rod, and a pin locking cap (75) is threadedly installed on the threaded rod.

10. The double-door structure of the box body according to claim 6, characterized in that, The connecting pin (73) is provided with a threaded groove, and a spring bolt for connecting the tension spring (8) is threadedly installed in the threaded groove.

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