Automatic cover locking device
An automatic locking device that uses a liquid level sensor in conjunction with a lock head solves the problem of easy-to-open lids in concentrate equipment, achieving automatic locking and unlocking, and ensuring internal protection of the concentrate equipment and stable operation of the washing device.
Patent Information
- Application Number
- CN202520157608.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-23
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-01-23
AI Technical Summary
Existing concentrate equipment typically leaves the lid open or the lid is easily opened after adding concentrate, leading to potential contamination and frequent manual intervention, which affects tableware hygiene and washing quality.
The automatic locking device, which uses a liquid level sensor in conjunction with a lock head, automatically locks and unlocks by inserting a protruding head into the cover groove and using a stop structure and a lug to limit the movement. Only one manual operation is required to lock or unlock.
This ensures the protection of the internal components of the concentrate equipment, avoids repeated manual switching, saves labor costs, and ensures the stable use of the washing device.
Smart Images

Figure CN223831055U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automatic lid locking technology, specifically an automatic lid locking device. Background Technology
[0002] Automatic dishwashers are widely used in large-scale catering industries due to their efficient dishwashing capabilities. Because their efficient and continuous cleaning process requires a constant supply of concentrated dishwashing solution, they are usually also equipped with a concentrated dishwashing solution system.
[0003] Such concentrate equipment can pre-store concentrate or mix different concentrates to form a mixed solution to meet washing requirements. However, in existing technology, such equipment is usually not closed after adding concentrate, or even if the lid is closed, it can be easily opened. This poses a potential risk of contamination to the concentrate, such as allowing flying insects to enter. To avoid this, manual inspection is required. In addition, the need to check the remaining amount of concentrate inside the equipment at any time also requires frequent opening and closing of the lid, which also causes management problems. If harmful substances accidentally enter the equipment, it will affect the hygiene of tableware and the quality of washing.
[0004] In view of the above problems, this utility model designs an automatic locking device that automatically locks the lid by cooperating with a liquid level sensor and a lock head. As long as there is liquid inside the concentrate equipment, it cannot be opened, thus ensuring the protection of the inside of the concentrate equipment. It also eliminates the need for manual opening and closing multiple times, saving labor costs. Summary of the Invention
[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide an automatic locking device that automatically locks the lid by means of a liquid level sensor and a lock head. As long as there is liquid inside the concentrate equipment, it cannot be opened, thus ensuring the protection of the inside of the concentrate equipment. It also eliminates the need for manual opening and closing multiple times, saving labor costs.
[0006] To achieve the above objectives, this utility model provides an automatic locking cover device. A locking cover is installed on the spike mounting position inside the device body. A rotating column is provided below the locking cover. A protrusion is provided on the inner side of the rotating column. The protrusion is inserted into the cover groove on the device body. A stop structure is provided on the outer side of the rotating column. A locking head position is provided on the inner side of the device body. A locking head is provided in the locking head position and is located above the protrusion.
[0007] A handle is provided on the top of the lock cover.
[0008] The top of the convex head is a horizontal protrusion that mates with the lock cylinder.
[0009] The width of the protrusion is less than the width of the cover groove.
[0010] The top of the stop structure features a horizontally protruding design.
[0011] The stop structure is located below the ears on both sides of the spike mounting position.
[0012] Compared with the prior art, this utility model locks the cover by using a liquid level sensor inside the device in conjunction with a lock head inside the lock head position to limit the protrusion inside the insertion cover groove. It also uses the ears protruding on both sides of the spike mounting position to limit the stop structure. This locks the cover as a whole and can be flexibly unlocked according to the liquid level. The entire process requires only one manual operation to lock and unlock the cover automatically, avoiding excessive manual intervention. This ensures that the mixed washing liquid inside the concentrate equipment is not disturbed by external factors, thereby ensuring the stable use of the washing device. Attached Figure Description
[0013] Figure 1 This is a three-dimensional illustration of the present invention. Figure 1 .
[0014] Figure 2 This is a three-dimensional illustration of the present invention. Figure 2 .
[0015] Figure 3 This is a schematic diagram of the lock cover of this utility model. Figure 1 .
[0016] Figure 4 This is a schematic diagram of the lock cover of this utility model. Figure 2 .
[0017] 1 is the device body, 2 is the lock cover, 3 is the handle, 4 is the lock head position, 5 is the rotating column, 6 is the stop structure, 7 is the protrusion, 8 is the cover groove, and 9 is the spike mounting position. Detailed Implementation
[0018] The present invention will now be further described with reference to the accompanying drawings.
[0019] See Figures 1-4 This utility model provides an automatic locking cover device. A locking cover 2 is installed on the spike mounting position 9 inside the device body 1. A rotating column 5 is provided below the locking cover 2. A protrusion 7 is provided on the inner side of the rotating column 5. The protrusion 7 is inserted into the cover groove 8 on the device body 1. A stop structure 6 is provided on the outer side of the rotating column 5. A lock head position 4 is provided on the inner side of the device body 1. A lock head is provided in the lock head position 4. The lock head is located above the protrusion 7.
[0020] A handle 3 is provided on the top of the lock cover 2.
[0021] The top of the protrusion 7 is a horizontal protrusion that mates with the lock cylinder.
[0022] The width of the protrusion 7 is smaller than the width of the cover groove 8.
[0023] The top of the stop structure 6 has a horizontally protruding design.
[0024] The stop structure 6 is located below the ears on both sides of the spike mounting position 9.
[0025] Working principle:
[0026] This invention requires minimal adjustment during use. Simply insert the lock cover 2 with the protrusion 7 aligned with the slot 8, and then slightly rotate the lock cover 2. This positions the lateral protrusions of the stop structures 6 on both sides below the ears on either side of the spike mounting position 9, preventing this part of the lock cover 2 from being pulled upwards. Simultaneously, after the protrusion 7 is inserted into the slot 8, the lock head in the lock head position 4 extends into the slot 8, blocking the lateral protrusion at the top of the inserted protrusion 7 and locking it upwards. Because the width of the protrusion 7 is slightly smaller than the width of the slot 8, even with a slight rotation of the lock cover 2, the stop structures 6 will not disengage from the limiting range of the ears on both sides of the spike mounting position 9, thus ensuring that the locked lock cover 2 cannot be pulled upwards as a whole, achieving overall locking. When the liquid level sensor inside the lock head position 4 detects that the liquid level of the concentrated liquid mixed inside the device is lower than the set value, it will automatically retract the lock head inside the lock head position 4 from the cover groove 8. After the protrusion 7 can move up, down, left and right, the stop structure 6 can be disengaged from the ears on both sides of the spike mounting position 9, and then the lock cover 2 can be pulled out.
[0027] The above are merely preferred embodiments of this utility model, intended only to aid in understanding the method and core concept of this application. The scope of protection of this utility model is not limited to the above embodiments; all technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the scope of protection of this utility model.
[0028] In the description of this utility model, it should be noted that the terms "upper", "lower", "inner", "outer", 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.
[0029] This invention comprehensively solves the instability and potential risks associated with the manual intervention required during the capping process of concentrated liquid equipment in existing technologies. It locks the cap by using an internal liquid level sensor in conjunction with a lock head inside the locking mechanism to limit the protrusion inserted into the cap groove. Furthermore, it uses protruding ears on both sides of the spike mounting position to limit the stop structure, thus locking the cap as a whole. The cap can be flexibly unlocked based on the liquid level. Only one manual operation is required to lock and automatically unlock the cap, avoiding excessive manual intervention and ensuring that the mixed washing liquid inside the concentrated liquid equipment is not disturbed by external factors, thereby guaranteeing the stable operation of the washing device.
Claims
1. An automatic lid locking device, characterized in that, A locking cover (2) is installed on the spike mounting position (9) inside the device body (1). A rotating column (5) is provided below the locking cover (2). A protrusion (7) is provided on the inner side of the rotating column (5). The protrusion (7) is inserted into the cover groove (8) on the device body (1). A stop structure (6) is provided on the outer side of the rotating column (5). A lock head position (4) is provided on the inner side of the device body (1). A lock head is provided in the lock head position (4). The lock head is located above the protrusion (7).
2. The automatic lid locking device according to claim 1, characterized in that, The top of the lock cover (2) is provided with a handle (3).
3. The automatic lid locking device according to claim 1, characterized in that, The top of the protrusion (7) is a lateral protrusion that cooperates with the lock head.
4. The automatic lid locking device according to claim 1, characterized in that, The width of the protrusion (7) is smaller than the width of the cover groove (8).
5. The automatic lid locking device according to claim 1, characterized in that, The top of the stop structure (6) is designed to protrude laterally.
6. The automatic lid locking device according to claim 1, characterized in that, The stop structure (6) is located below the ears on both sides of the spike mounting position (9).