A box structure with a self-locking door when opened.
By setting support rods and limiting parts on the door, and using sliding grooves and limiting grooves to achieve self-locking of the door, the safety risk of sudden closure of the door in the prior art is solved, ensuring safety and ease of operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGXI MESIDA KERUI MACHINERY EQUIPMENT CO LTD
- Filing Date
- 2025-04-28
- Publication Date
- 2026-05-26
AI Technical Summary
The existing cabinet doors lack a self-locking mechanism, which can easily lead to sudden closure due to gas spring failure or support rod displacement, posing a safety risk.
Design a box structure with a self-locking door. By setting a support rod and a limiting part on the door, the self-locking is achieved by using a sliding groove and a limiting groove. The slider slides in the sliding groove and slides into the limiting groove at a specific position to achieve self-locking, thus preventing the support rod from suddenly slipping off.
It achieves reliable self-locking of the cabinet door, preventing sudden closure, improving safety, and is simple and convenient to operate.
Smart Images
Figure CN224282272U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of box structure technology, and in particular to a box structure with a self-locking door when opened. Background Technology
[0002] Box-like structures are used to store objects, such as the luggage compartment on a bus or the enclosure on a crusher for storing electrical equipment. These are examples of box-like structures. They are equipped with doors, which typically rotate upwards to open. To maintain the door's openness, two common methods are used: one is to use a gas spring, which keeps the door open; the other is to use a support rod, one end of which is rotatably mounted on the door or box body. Once the door is opened to a certain extent, the support rod presses against the box body or door to maintain its open position.
[0003] The commonly used methods for maintaining the openness of the cabinet door mentioned above do not include a self-locking mechanism. If a gas spring is used, the door will suddenly close if the gas spring fails, and it will no longer be able to maintain the door's openness. If a support rod is used, even a slight accidental touch to the support rod or the door can easily cause the support point to shift, resulting in the door suddenly closing. A suddenly closing door can easily injure the user, posing a certain safety risk. Utility Model Content
[0004] To address the above shortcomings, this utility model provides a box structure with a self-locking mechanism for opening the box door, which can solve the problem of the box door easily closing suddenly due to the lack of a self-locking mechanism.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] A box structure with a self-locking door includes a box body and a door located on one side of the box body. The top of the door is rotatably connected to the box body. A sliding groove is provided on the inner side wall of the box body. The sliding groove extends towards or away from the door, and a limiting groove is provided at the end of the sliding groove near the door. A support rod is provided on the door. One end of the support rod is rotatably connected to the door, and the other end is provided with a limiting part. The limiting part is slidably disposed in the sliding groove. When the door is opened to a certain extent, the limiting part slides to the end of the sliding groove near the door and slides into the limiting groove to realize the self-locking of the door.
[0007] Furthermore, the limiting part includes a slider, the main body of which is a rectangular block structure. A rounded end is provided at one short side of the rectangular block structure of the slider. The slider is rotatably mounted at the end of the support rod through the rounded end, and the rotation axis is coaxial with the rounded end.
[0008] The bottom of the limiting groove is arc-shaped, and an avoidance groove is provided on the side wall of the limiting groove away from the slide groove. The avoidance groove is arc-shaped on the side wall away from the slide groove.
[0009] Furthermore, when the slider of the limiting part slides into the limiting groove, the arc end of the slider is located below and abuts against the bottom of the limiting groove. At this time, the other end of the slider opposite to the arc end abuts against or approaches the upper side wall of the groove.
[0010] Furthermore, the width of the short side of the slider is equal to or slightly smaller than the width of the groove.
[0011] Furthermore, the two end corners of the slider opposite to the arc end are rounded.
[0012] Furthermore, the connection between the clearance groove and the limiting groove is tangent.
[0013] Furthermore, a horizontal plate is fixedly installed on the inner side wall of the box body. The horizontal plate is arranged horizontally, and the sliding groove extends along the length of the horizontal plate and passes through the two opposite vertical sides of the horizontal plate.
[0014] The limiting part also includes a mounting rod, which is disposed at the end of the support rod. The arc end of the slider is rotatably mounted on the mounting rod. A limiting plate is provided at the end of the mounting rod away from the support rod, and the limiting plate is larger than the slide groove.
[0015] Furthermore, the mounting rod is a screw rod, a bushing is sleeved in the middle of the mounting rod, the slider is rotatably sleeved on the bushing, a washer is provided at the end of the mounting rod away from the slider, the slider and the support rod are located between the washer and the limiting plate, and a nut is tightened at the other end of the mounting rod which is a screw rod.
[0016] Furthermore, a gas spring is also provided on the inner side wall of the box, with one end of the gas spring rotatably connected to the box and the other end rotatably connected to the box door.
[0017] Furthermore, the sliding grooves are provided on the inner sidewalls of the opposite sides of the box body, and the support rods are provided on the opposite sides of the box door.
[0018] Compared with the prior art, the beneficial effects of this utility model are: the box structure with a self-locking door that opens in this utility model, by setting a sliding groove and a limiting groove, in conjunction with the support rod and its limiting part, when the box door is opened to a certain extent, the limiting part slides into the limiting groove to limit and achieve self-locking. Through this self-locking, the situation of the box door suddenly closing due to the support rod suddenly slipping off the support point is avoided, thus ensuring safe use.
[0019] By setting the slider and its arc end, and cooperating with the clearance groove, the slider can be opened only in a certain way after entering the limit groove, thus achieving good and reliable self-locking. Attached Figure Description
[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.
[0021] Figure 1 This is a schematic diagram of the box structure with a self-locking door when it is in the open state, taken from one perspective.
[0022] Figure 2 This is a schematic diagram of the box structure with a self-locking door when it is in the open state from another perspective.
[0023] Figure 3 This is a partial schematic diagram of the box structure with a self-locking door that unfolds according to this utility model;
[0024] Figure 4 This is a partial perspective view of the support rod, slide groove, and limiting part in this utility model;
[0025] Figure 5 This is a schematic diagram showing the position of the limiting part in the self-locking state and other components in this utility model;
[0026] Figure 6 This is a schematic diagram showing the position of the limiting part in the self-locking state and other components in this utility model (some components are not shown).
[0027] The markings shown in the figure are as follows: 10-box body; 11-slide groove; 12-limiting groove; 13-avoidance groove; 14-horizontal plate; 20-box door; 30-support rod; 40-limiting part; 41-slider; 42-mounting rod; 43-limiting plate; 44-shaft sleeve; 45-washer; 46-nut; 50-gas spring. Detailed Implementation
[0028] 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. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.
[0029] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and 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 be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 connection of 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. Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.
[0031] like Figures 1 to 6 As shown, a preferred embodiment of this utility model provides a box structure with a self-locking door, including a box body 10 and a door 20 located on one side of the box body 10. The box body 10 has a cavity for placing objects. The box body 10 has an open opening on at least one side, and the door 20 is located at the open opening. The top of the door 20 is rotatably connected to the box body 10. When the door 20 is unfolded upwards, the door 20 is opened.
[0032] The inner side wall of the box 10 is provided with a sliding groove 11, which extends towards or away from the box door 20, and a limiting groove 12 is provided at the end of the sliding groove 11 near the box door 20.
[0033] A support rod 30 is provided on the door 20. One end of the support rod 30 is rotatably connected to the door 20, and the other end is provided with a limiting part 40. The limiting part 40 is slidably disposed in the slide groove 11. When the door 20 is opened to a certain extent, the limiting part 40 slides to the end of the slide groove 11 near the door 20 and slides into the limiting groove 12 to realize the self-locking of the door 20 when it is opened. At this time, the limiting part 40 is limited by the limiting groove 12 to realize self-locking. Through this self-locking, the support rod is prevented from suddenly slipping off the support point and causing the door 20 to close suddenly, thus ensuring safe use.
[0034] In some preferred embodiments, the inner sidewalls of the opposite sides of the box body 10 are provided with sliding grooves 11 and limiting grooves 12, and the opposite sides of the box door 20 are provided with support rods 30 and limiting parts 40.
[0035] The limiting part 40 includes a slider 41. The main body of the slider 41 is a rectangular block structure. An arc-shaped end 411 is provided at one short side of the slider 41. The slider 41 is rotatably mounted at the end of the support rod 30 via the arc-shaped end 411, and the axis of rotation is coaxial with the arc-shaped end 411. The bottom of the limiting groove 12 is arc-shaped. An avoidance groove 13 is provided on the side wall of the limiting groove 12 away from the slide groove 11. The avoidance groove 13 is arc-shaped on the side wall away from the slide groove 11. When the slider 41 of the limiting part 40 slides into the limiting groove 12, the arc-shaped end 411 of the slider 41 is located below and abuts against the bottom of the limiting groove 12. At this time, the other end of the slider 41 opposite to the arc-shaped end 411 abuts against or approaches the upper side wall of the slide groove 11. Figure 2 , Figure 5 and Figure 6 As shown, under the action of the other end of the slider 41 opposite to the arc end 411, even if the slider 41 moves upward, it cannot enter the slide groove 11. At this time, it enters a reliable self-locking state. Without human unlocking, the slider 41 cannot enter the slide groove 11 and move freely along the slide groove 11. At this time, the box door 20 is normally open.
[0036] When it is necessary to actively close the box door 20, first gently push the box door 20 upward with external force, then gently pull the support rod 30 downward. After the arc end 411 of the slider 41 slides along the arc-shaped bottom of the clearance groove 13, the slider 41 adjusts its direction. After the other end of the slider 41 and the arc end 411 enter the slide groove 11, the self-locking is released. Then, press the box door 20 downward with force until the box door 20 is closed.
[0037] Preferably, the width of the short side of the slider 41 is equal to or slightly smaller than the width of the groove 11, so that the slider 41 slides smoothly within the groove 11. The two end corners of the slider 41 opposite to the arc end 411 are rounded to allow for better adjustment of the orientation of the opposite end of the slider 41 when the self-locking is released. The connection between the clearance groove 13 and the limiting groove 12 is tangent, so that the arc end 411 of the slider 41 can smoothly enter the clearance groove 13 and slide along the arc-shaped bottom of the clearance groove 13.
[0038] A horizontal plate 14 is fixedly installed on the inner wall of the housing 10. The horizontal plate 14 is arranged horizontally, and a sliding groove 11 extends along the length of the horizontal plate 14 and passes through two opposite vertical sides of the horizontal plate 14. At this time, the sliding groove 11 is a through groove. The limiting part 40 also includes a mounting rod 42, which is set at the end of the support rod 30. The arc end 411 of the slider 41 is rotatably mounted on the mounting rod 42. A limiting plate 43 is set at the end of the mounting rod 42 away from the support rod 30. The limiting plate 43 is larger than the sliding groove 11. At this time, the limiting plate 43 and the support rod 30 are located on both sides of the sliding groove 11. That is, the limiting plate 43 and the support rod 30 are located on both sides of the horizontal plate 14 and clamp the horizontal plate 14, while the slider 41 is located in the sliding groove 11 or the limiting groove 12 on the horizontal plate 14, ensuring that the slider 41 will not disengage from the sliding groove 11 or the limiting groove 12. In a preferred embodiment, the limiting plate 43 is circular and coaxially arranged with the arc end 411 of the slider 41, and is larger than the arc end 411. Therefore, when the slider 41 slides in the slide groove 11, the bottom position of the limiting plate 43 is lower than the bottom of the slide groove 11, so that the limiting plate 43 and the support rod 30 can jointly achieve the limiting, preventing the limiting part 40 from disengaging from the slide groove 11 and the limiting groove 12.
[0039] The mounting rod 42 is a screw, with a bushing 44 fitted in the middle. The slider 41 is rotatably fitted onto the bushing 44, allowing free engagement between the slider 41 and the bushing 44. The slider 41 can rotate freely around the bushing 44. A washer 45 is provided at the end of the mounting rod 42 away from the slider 41. A through hole is provided at the end of the support rod 30, through which the bushing 44 passes. The slider 41 and the support rod 30 are located between the washer 45 and the limiting plate 43. A nut 46 is tightened at the other end of the mounting rod 42, limiting the washer 45 and the limiting plate 43 and keeping them positioned on both sides of the slider 41 and the support rod 30. The fixing method of the mounting rod 42 and the nut 46 facilitates the assembly and disassembly of the limiting part 40, and the bushing 44 facilitates the rotatable connection with the slider 41 and the support rod 30.
[0040] A gas spring 50 is also installed on the inner wall of the box body 10. One end of the gas spring 50 is rotatably connected to the box body 10, and the other end is rotatably connected to the box door 20. When the box door 20 is opened, the gas spring 50 extends to a certain length to support the box door 20. In this utility model, the gas spring 50, together with the support rod 30, provides double support for the box door 20 when it is opened. The gas spring 50 can be installed on opposite sides of the box body 10, that is, it provides support from both sides. A lock is installed on the door 20, and a lock latch is installed on the body 10. When the lock is opened, the door 20 is opened by the force of the gas spring 50. During the opening process, the support rod 30 pulls the slider 41 to slide along the slide groove 11. After the door 20 is opened to a certain angle, the slider 41 moves to the self-locking point. Under the weight of the support rod 30, the slider 41 presses down the arc end 411 and slides into the bottom of the self-locking point of the limiting groove 12, forming a vertical self-lock. The door 20 is supported by both the gas spring 50 and the support rod 30. Firstly, the support rod 30 extends the life of the gas spring 50 and makes it less prone to failure. Secondly, even if the gas spring 30 fails, the support rod 30 can still be used to keep the door 20 open. If the gas spring 50 suddenly fails when the door 20 is open, the support rod 30 will provide support, making it safer.
[0041] The addition of the slide rail 11 and slider 41 makes it easier and simpler to operate without having to manually lift the support rod 30 and then use bolts and nuts to fix it when opening the door. The slider 41 has a self-locking function, so there is no risk of accidental operation that could cause the door 20 to be pressed down and closed, resulting in injury.
[0042] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.
Claims
1. A box structure with a self-locking door, comprising a box body (10) and a door (20) located on one side of the box body (10), wherein the top of the door (20) is rotatably connected to the box body (10), characterized in that, The inner wall of the box (10) is provided with a sliding groove (11), which extends towards or away from the box door (20), and a limiting groove (12) is provided at the end of the sliding groove (11) near the box door (20); a support rod (30) is provided on the box door (20), one end of the support rod (30) is rotatably connected to the box door (20), and the other end is provided with a limiting part (40). The limiting part (40) is slidably disposed in the sliding groove (11), and when the box door (20) is opened to a certain extent, the limiting part (40) slides to the end of the sliding groove (11) near the box door (20) and slides into the limiting groove (12) to realize the self-locking of the opening of the box door (20).
2. The case structure with a self-locking door as described in claim 1, characterized in that, The limiting part (40) includes a slider (41). The main body of the slider (41) is a rectangular block structure. A rounded end (411) is provided at one short side end of the rectangular block structure slider (41). The slider (41) is rotatably mounted at the end of the support rod (30) through the rounded end (411), and the rotation axis is coaxial with the rounded end (411). The bottom of the limiting groove (12) is arc-shaped, and the limiting groove (12) has a relief groove (13) on the side wall away from the slide groove (11). The relief groove (13) is arc-shaped on the side wall away from the slide groove (11). When the slider (41) of the limiting part (40) slides into the limiting groove (12), the arc end (411) of the slider (41) is located below and abuts against the bottom of the limiting groove (12). At this time, the other end of the slider (41) opposite to the arc end (411) abuts against or approaches the upper side wall of the groove (11).
3. The case structure with a self-locking door as described in claim 2, characterized in that, The width of the short side of the slider (41) is equal to or slightly smaller than the width of the groove (11).
4. The case structure with a self-locking door as described in claim 2, characterized in that, The two end corners of the slider (41) opposite to the arc end (411) are rounded.
5. The case structure with a self-locking door as described in claim 2, characterized in that, The connection between the clearance groove (13) and the limiting groove (12) is tangent.
6. The case structure with a self-locking door as described in claim 2, characterized in that, A horizontal plate (14) is fixedly installed on the inner side wall of the box (10). The horizontal plate (14) is arranged horizontally, and the slide (11) extends along the length direction of the horizontal plate (14) and passes through the two opposite vertical sides of the horizontal plate (14). The limiting part (40) also includes a mounting rod (42), which is disposed at the end of the support rod (30). The arc end (411) of the slider (41) is rotatably mounted on the mounting rod (42). A limiting plate (43) is provided at the end of the mounting rod (42) away from the support rod (30), and the limiting plate (43) is larger than the slide groove (11).
7. The case structure with a self-locking door as described in claim 6, characterized in that, The mounting rod (42) is a screw rod. A bushing (44) is sleeved in the middle of the mounting rod (42). The slider (41) is rotatably sleeved on the bushing (44). A washer (45) is provided at the end of the mounting rod (42) away from the slider (41). The slider (41) and the support rod (30) are located between the washer (45) and the limiting plate (43). A nut (46) is tightened at the other end of the mounting rod (42), which is a screw rod.
8. The case structure with a self-locking door as described in claim 1, characterized in that, A gas spring (50) is also provided on the inner side wall of the box (10). One end of the gas spring (50) is rotatably connected to the box (10), and the other end is rotatably connected to the box door (20).
9. The case structure with a self-locking door as described in any one of claims 1 to 8, characterized in that, The sliding groove (11) is provided on the inner sidewalls of the opposite sides of the box body (10), and the support rod (30) is provided on the opposite sides of the box door (20).