A locking device for opening and closing an upper cover and a box

Abstract

The utility model belongs to locking device technical field especially relates to a locking device and box body that upper cover opens and shuts, including base plate, the upper end of base plate is rotatably connected with flap, and the base plate is connected with the flap and has locking mechanism, the locking mechanism includes toothed structure spare, dog, locking elastic part, the dog can be connected or is separated with the realization of the card groove that is provided on toothed structure spare, one end of the dog away from toothed structure spare is equipped with handle, locking elastic part is located the one side of the dog away from toothed structure spare, first pivot is equipped between handle and dog, handle and dog can rotate around first pivot. The utility model is through the rotatable connection cooperation locking mechanism of base plate and flap, has realized the reliable locking of upper cover multi -angle and flexible opening and closing function.

Description

Technical Field

[0001] This utility model belongs to the field of locking device technology, and in particular relates to a locking device for opening and closing the top cover and a housing. Background Technology

[0002] In industrial equipment and precision instruments, the safety and reliability of the cover opening and closing mechanism are paramount. Traditional cover locking devices generally suffer from the following technical defects: 1) They use simple pins or bolts for fixing, which is cumbersome to operate and cannot achieve multi-angle suspension; 2) They rely on manual locking, which can easily lead to accidental fall of the cover due to operational negligence, posing a safety hazard; 3) The mechanical structure lacks a self-locking function, making it prone to loosening under vibration or tilting conditions; 4) They are highly specialized and difficult to adapt to the needs of different equipment specifications. Especially in precision manufacturing fields such as semiconductor PVD equipment, the cover of the pre-cleaning chamber needs to be opened and closed frequently and requires precise positioning. Traditional locking mechanisms can no longer meet the dual requirements of modern industry for ease of operation and safety and reliability. In addition, existing ratchet mechanisms often have problems such as large return backlash and inaccurate positioning, while ordinary spring locking devices lack multi-position adjustment capabilities. Therefore, there is an urgent need to develop a new type of cover locking device that combines self-locking protection and wide applicability. Utility Model Content

[0003] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a locking device for opening and closing the top cover and a box body.

[0004] To achieve the above objectives, the technical solution adopted is:

[0005] One of the objectives of this utility model is to provide a locking device for opening and closing a cover, comprising a base plate, a flap rotatably connected to the upper end of the base plate, and a locking mechanism connected between the base plate and the flap. The locking mechanism includes a meshing structure, a pawl, and a locking elastic element. The meshing structure is provided with a slot, and the pawl can engage or disengage with the slot. A handle is provided at the end of the pawl away from the meshing structure. The locking elastic element is located on the side of the pawl away from the meshing structure. A first rotating shaft is provided between the handle and the pawl, and the handle and the pawl can rotate around the first rotating shaft.

[0006] The advantages of adopting the above technical solution are as follows: the flexible opening and closing function of the top cover is realized through the rotational connection between the base plate and the flip plate; the cooperative design of the toothed structural component and the claw provides a reliable locking mechanism.

[0007] The locking spring mechanism ensures automatic reset functionality.

[0008] Based on the above technical solution, the present invention can be further improved as follows:

[0009] Preferably, the locking elastic element is a spring.

[0010] The beneficial effect of adopting the above-mentioned preferred technical solution is that the spring provides a stable elastic force to the handle.

[0011] It has a simple and reliable structure, low cost, and is easy to replace.

[0012] Preferably, the meshing structure is a spline or a ratchet.

[0013] More preferably, the meshing structure is connected to the side of the flap via a locating pin.

[0014] Preferably, one end of the spring is located on the side of the substrate and connected to the substrate, and the other end abuts against the handle, which is rotatably connected to the substrate via a first rotating shaft.

[0015] The advantages of adopting the above-mentioned preferred technical solution are: one end of the spring is fixed to the substrate to ensure stability.

[0016] The other end abuts against the handle to achieve effective transmission.

[0017] Preferably, there are two locking mechanisms, located on both sides of the flip plate, and a second rotating shaft connects the two locking mechanisms. The base plate and the flip plate are rotatably connected through the second rotating shaft.

[0018] The advantages of adopting the above-mentioned preferred technical solution are: the double-sided locking mechanism improves locking stability.

[0019] Equilibrium force distribution.

[0020] More preferably, the locking mechanism is provided with a side cover plate on the side away from the flip plate.

[0021] The beneficial effects of adopting the above-mentioned preferred technical solution are: protecting the internal locking mechanism and preventing foreign objects from entering.

[0022] Preferably, a bushing is provided on the outer periphery of the second rotating shaft.

[0023] The advantages of adopting the above-mentioned preferred technical solution are that the bushing helps to reduce frictional loss and extend the service life of the shaft.

[0024] Preferably, the second rotating shaft is disposed inside the substrate, and both ends of the second rotating shaft extend out of the substrate and are connected to the flip plate.

[0025] The advantages of adopting the above-mentioned preferred technical solution are: a more compact structure and better protection.

[0026] Preferably, the substrate is arranged vertically.

[0027] The second objective of this utility model is to provide a box with an openable top cover, including a cavity with an opening at the top, a top cover that can be opened and closed connected to the top of the cavity, a locking device for opening and closing the top cover provided on the outside of the box with the top cover openable and closable, a base plate connected to the cavity, and a flap connected to the top cover.

[0028] The beneficial effect of adopting the above-mentioned preferred technical solution is that the overall structure enables reliable opening and closing of the top cover.

[0029] It provides a stable locking function and is easy and safe to operate.

[0030] Preferably, the substrate is connected to the cavity by bolts, and the flap is connected to the top cover by bolts.

[0031] The advantages of adopting the above-mentioned preferred technical solution are: the bolt connection method is convenient for installation and disassembly, the connection is firm and reliable, and it is easy to maintain and replace.

[0032] Preferably, the handle and the claw are an integrated structure.

[0033] Compared with existing technologies, the advantages of this utility model are as follows: This utility model provides a locking device and housing for opening and closing a lid. Through the rotational connection between the base plate and the flip plate, a locking mechanism composed of a toothed structure (spline / ratchet), pawls, and springs is used to achieve reliable locking and flexible opening and closing of the lid at multiple angles. The core advantage of this device lies in its self-locking performance. When the lid is opened to a certain angle and released, the spring-driven pawls automatically engage with the toothed structure, effectively preventing the lid from falling freely and ensuring reliability in practical applications. The use of a double-sided symmetrical locking mechanism, combined with a second rotating shaft with a bushing, further enhances locking stability and smooth rotation. The bolted connection method makes installation and maintenance more convenient. Its application scenarios are not limited to PVD equipment in the semiconductor industry, but can also be widely used in other industrial equipment, medical instruments, and other fields requiring lid opening and closing locking, demonstrating significant versatility and adaptability. The overall structure solves the problems of insufficient stability and inconvenient operation of traditional locking devices, combining operational safety and functional reliability. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the structure of a locking device for opening and closing a top cover according to the present invention;

[0035] Figure 2 This is a schematic diagram of the internal structure of the locking device for opening and closing the top cover of this utility model after removing the side cover plate.

[0036] Figure 3 This is a front view of a box with an openable top cover according to the present invention;

[0037] Figure 4This is a cross-sectional view of a locking device for opening and closing a top cover according to the present invention;

[0038] Figure 5 This is a three-dimensional structural diagram of a box with an openable and closable top cover according to the present invention;

[0039] The attached figures are labeled as follows: 1. Base plate; 2. Flip plate; 3. Side cover plate; 4. Handle; 5. Top cover; 6. Cavity; 7. Spline; 8. Positioning pin; 9. First rotating shaft; 10. Spring; 11. Second rotating shaft; 12. Bushing; 13. Claw. Detailed Implementation

[0040] The present invention will be described below with reference to examples. The examples are only used to explain the present invention and are not intended to limit the scope of the present invention.

[0041] In the description of this utility model, it should be noted that the terms "vertical", "up", "down", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

[0042] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" 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 according to the specific circumstances.

[0043] Reference Figures 1-5 This utility model provides a locking device for opening and closing a top cover 5, including a base plate 1. A flip plate 2 is rotatably connected to the upper end of the base plate 1. A locking mechanism is connected between the base plate 1 and the flip plate 2. The locking mechanism includes a toothed structure, a claw 13, and a locking elastic element. The toothed structure is provided with a slot, and the claw 13 can engage or disengage with the slot. A handle 4 is provided at the end of the claw 13 away from the toothed structure. The locking elastic element is located on the side of the claw 13 away from the toothed structure. A first rotating shaft 9 is provided between the handle 4 and the claw 13, and the handle 4 and the claw 13 can rotate around the first rotating shaft 9.

[0044] In this embodiment, the handle 4 and the claw 13 are an integrated structure.

[0045] In this embodiment, the locking elastic element is a spring 10.

[0046] In an optional embodiment, the meshing structure is a spline 7 or a ratchet; in this embodiment, it is a spline 7.

[0047] In an optional embodiment, the meshing structure is connected to the side of the flap 2 by a locating pin 8.

[0048] In an optional embodiment, one end of the spring 10 is located on the side of the substrate 1 and connected to the substrate 1, and the other end abuts against the handle 4, which is rotatably connected to the substrate 1 via a first rotating shaft 9.

[0049] In an optional embodiment, the locking mechanism is provided as two, respectively located on both sides of the flip plate 2, and a second rotating shaft 11 is connected between the two locking mechanisms. The base plate 1 and the flip plate 2 are rotatably connected through the second rotating shaft 11.

[0050] In an optional embodiment, the locking mechanism is provided with a side cover plate 3 on the side away from the flap 2.

[0051] In this embodiment, a bushing 12 is provided on the outer periphery of the second rotating shaft 11.

[0052] In an optional embodiment, the second rotating shaft 11 is disposed inside the substrate 1, and both ends of the second rotating shaft 11 extend out of the substrate 1 and are connected to the flip plate 2.

[0053] In this embodiment, the substrate 1 is vertically arranged.

[0054] This utility model also provides a box with an openable top cover 5, including a cavity 6 with an opening at the top, a top cover 5 that can be opened and closed is connected above the cavity 6, a locking device for opening and closing the top cover 5 is provided on the outside of the box with the top cover 5 openable and closed, a base plate 1 is connected to the cavity 6, and a flip plate 2 is connected to the top cover 5.

[0055] In this embodiment, the substrate 1 is connected to the cavity 6 by bolts, and the flip plate 2 is connected to the upper cover 5 by bolts.

[0056] The working principle is as follows: When unlocking, the operator must first lift the handle 4 upwards by hand to overcome the elastic force of the spring 10 in a compressed state, squeeze the spring 10, and make the handle 4 rotate around the first rotating shaft 9. The handle 4 generates a lever action with the rotating shaft as the fulcrum, so that the pawl 13 disengages from the spline 7 slot, and the mechanical constraint between the flip plate 2 and the base plate 1 is released. At this time, the operator can manually lift the top cover 5. The top cover 5 drives the flip plate 2 to rotate. The second rotating shaft 11 remains stationary. The flip plate 2 rotates relative to the base plate 1 through the second rotating shaft 11. The spline 7 rotates synchronously with the flip plate 2. The multiple slots evenly distributed around its circumference pass through the position of the pawl 13 in sequence. During this period, the handle 4 remains in a lifted state, and the top cover 5 enters a free movement period, realizing the opening and closing of the top cover 5. When the top cover 5 reaches the target angle, the handle 4 is released, the energy stored in the spring 10 is released, and the handle 4 is reset. The pawl 13 automatically engages with the corresponding spline 7 slot, and a self-locking effect is generated through tooth surface meshing.

[0057] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A locking device for opening and closing a top cover, characterized in that, The device includes a base plate, a flap plate rotatably connected to the upper end of the base plate, and a locking mechanism connected between the base plate and the flap plate. The locking mechanism includes a meshing structure, a pawl, and a locking elastic element. The meshing structure has a slot, and the pawl can engage or disengage with the slot. A handle is provided at the end of the pawl away from the meshing structure. The locking elastic element is located on the side of the pawl away from the meshing structure. A first rotating shaft is provided between the handle and the pawl, and the handle and the pawl can rotate around the first rotating shaft.

2. The locking device for opening and closing the upper cover according to claim 1, characterized in that, The locking elastic element is a spring.

3. The locking device for opening and closing the upper cover according to claim 1, characterized in that, The meshing component is a spline or a ratchet.

4. The locking device for opening and closing the upper cover according to claim 1, characterized in that, The meshing structure is connected to the side of the flap via a locating pin.

5. The locking device for opening and closing the upper cover according to claim 2, characterized in that, One end of the spring is located on the side of the substrate, and the other end abuts against the handle. The handle is rotatably connected to the substrate via a first rotating shaft.

6. The locking device for opening and closing the upper cover according to claim 1, characterized in that, The locking mechanism is configured as two, located on both sides of the flap, and a second rotating shaft connects the two locking mechanisms.

7. The locking device for opening and closing the upper cover according to claim 1, characterized in that, The locking mechanism has a side cover plate on the side away from the flip plate.

8. A box with an openable top cover, characterized in that, The device includes a cavity, with an openable and closable top cover connected to the top of the cavity. The outer side of the box body with the top cover openable and closable is provided with a locking device for opening and closing the top cover as described in any one of claims 1 to 7. The base plate is connected to the cavity, and the flap is connected to the top cover.

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