Novel special plastic duckbilled lock catch structure for EPP (Expanded Polypropylene) box
By designing a new type of plastic duckbill lock structure specifically for EPP boxes, the problems of existing EPP box locks being unable to lock effectively and being inconvenient to open and close have been solved, achieving both airtightness and ease of operation of the boxes, and simplifying the production process.
Patent Information
- Application Number
- CN202520783198.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-24
- Publication Date
- 2026-02-06
- Estimated Expiration
- 2035-04-24
AI Technical Summary
The existing locking structure of EPP boxes cannot be effectively locked during use, and is inconvenient to open and close, affecting the airtightness and ease of operation of the boxes.
A novel plastic duckbill lock structure for EPP boxes has been designed. Through the cooperation of the top connecting piece, hinge plate, locking ring, through groove, lock and bottom connecting piece, the lid and body of the box are tightly locked, and the production process is simplified.
It improves the airtightness of the box, simplifies the production process, facilitates the opening and closing of the box, and enhances the practicality and aesthetics of the lock.
Smart Images

Figure CN223873443U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a suitcase lock catch technical field, concretely is a new type EPP box special plastic duckbill lock catch structure. BACKGROUND
[0002] The suitcase is a container of various shapes, which has a space inside to accommodate various objects, and the container is equipped with a handle for easy lifting of the suitcase. However, after the objects are placed inside the container, it is necessary to secure the suitcase to ensure stability and prevent it from being opened.
[0003] The existing authorized publication number "CN218705102U" is a new type of handle hinge EPP box structure, which includes a box cover and a box bottom. The box cover and the box bottom are connected by a hinge. Two symmetrical lock bottom plates are fixed on one side of the top end of the box cover. Two lock face covers are connected to the top end of the two lock bottom plates through buckle assembly. An opening and closing panel is installed on one side of the top end of the two lock face covers through a rotating shaft. A nylon webbing is installed between the two lock face covers. A handle is fixedly installed in the middle of the nylon webbing. Two symmetrical square insertion holes are formed on one side of the top end of the box bottom. Two barb lock latches are installed on one end of the two lock face covers. The two barb lock latches are connected to the corresponding square insertion holes. The utility model is provided with a nylon webbing, a handle, a lock face cover, an opening and closing panel, a lock bottom plate, a barb lock latch and a cylindrical segment, which connect the nylon webbing and the handle to the lock face cover and the lock bottom plate to form an overall structure. The opening and closing panel controls the box cover and the box bottom, making it convenient to use, simplifying the production process and facilitating operation.
[0004] However, the connecting part on the suitcase cannot be locked well during the locking process of the suitcase, and it is also inconvenient during the opening process. Utility model content
[0005] The utility model aims at providing a new type EPP box special plastic duckbill lock catch structure to solve the existing problems in the above background technology.
[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a new type EPP box special plastic duckbill lock catch structure, which includes a box cover. Two symmetrical top connecting pieces are arranged on the two sides of one end of the box cover. A hinge plate is hingedly connected to one end of the top connecting piece. A lock ring is hingedly connected to the bottom of the hinge plate. A box body is arranged at the bottom of the box cover. Two symmetrical bottom connecting pieces are arranged on the two sides of one end of the box body. A lock catch is arranged at the bottom of one end of the bottom connecting piece. A lock hole is arranged on one side of the lock catch. A through groove is arranged at one end of the lock ring. The through groove and the lock catch are mutually adapted.
[0007] Preferably, two sides of the top of the box cover are symmetrically provided with mounting grooves, and the mounting grooves are internally provided with connecting holes; the bottom of the top connecting piece is provided with a plurality of connecting pipes, and the connecting pipes are located inside the connecting holes, so that the position of the top connecting piece is fixed, and the top connecting piece is also convenient to disassemble and assemble subsequently.
[0008] Preferably, two sides of the hinged plate are symmetrically provided with mounting holes, and two sides of the lock ring are symmetrically provided with connecting shafts, and the connecting shafts are located inside the mounting holes, so that the lock ring can be rotated alone, and the box cover and the box body are conveniently tensioned.
[0009] Preferably, two sides of one end of the bottom connecting piece are symmetrically provided with insertion pipes, and the insertion pipes are internally provided with connecting bolts; the bottom connecting piece is connected with the box body through the connecting bolts, so that the position of the bottom connecting piece is fixed, and the bottom connecting piece is also convenient to replace when damaged.
[0010] Preferably, one end of the box cover is provided with a handle, so that the box is convenient to carry.
[0011] Preferably, the bottom of the hinged plate is provided with a connecting groove, and the lock ring is located inside the connecting groove, so that the lock ring can be rotated.
[0012] Preferably, one end of the top connecting piece is provided with a hidden groove, and the hinged plate is hinged inside the hidden groove, so that the top connecting piece and the hinged plate are kept in the same plane, and the appearance is guaranteed.
[0013] Compared with the prior art, the novel EPP box special plastic duckbill lock catch structure has the advantages that:
[0014] Through cooperation of the top connecting piece, the hinged plate, the lock ring, the through groove, the lock catch, the lock hole and the bottom connecting piece, the locking work of the box body can be effectively guaranteed in the process of using the lock catch, gaps between the box cover and the box body when the box cover is closed are avoided, the sealing effect of the box is improved, the box is also convenient to open when the article inside the box body needs to be taken out, the lock catch structure is simple, the production process is effectively simplified, and manufacturing is facilitated. BRIEF DESCRIPTION OF DRAWINGS
[0015] Fig. 1 is a perspective view of the utility model;
[0016] Fig. 2 is a plan view of the box cover of the utility model;
[0017] Fig. 3 is a front view of the utility model.
[0018] In the figure: 1, box cover; 2, top connecting piece; 3, hinged plate; 4, lock ring; 5, through slot; 6, lock catch; 7, lock hole; 8, bottom connecting piece; 9, box body. DETAILED DESCRIPTION
[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.
[0020] Please refer to Figs. 1-3 The utility model provides an embodiment: a novel EPP box special plastic duckbill lock catch structure, including box cover 1, one end of box cover 1 is equipped with handle, and it is convenient to carry box, the both sides of one end of box cover 1 are equipped with top connecting piece 2 symmetrically, the both sides of the top of box cover 1 are equipped with mounting groove symmetrically, and the inside of mounting groove is equipped with connecting hole, the bottom of top connecting piece 2 is equipped with multiple sets of connecting pipe, and connecting pipe is located inside connecting hole, the position of top connecting piece 2 is fixed, and it is also convenient to disassemble top connecting piece 2 subsequently, one end of top connecting piece 2 is hinged with hinged plate 3, one end of top connecting piece 2 is equipped with hidden groove, and hinged plate 3 is hinged in the inside of hidden groove, so that top connecting piece 2 and hinged plate 3 keep in the same plane, guarantee the aesthetic property, the bottom of hinged plate 3 is hinged with lock ring 4, the bottom of hinged plate 3 is equipped with connecting groove, and lock ring 4 is located in the inside of connecting groove, so that lock ring 4 can rotate;
[0021] The bottom of box cover 1 is equipped with box body 9, the both sides of hinged plate 3 are equipped with mounting hole symmetrically, the both sides of lock ring 4 are equipped with connecting shaft symmetrically, and connecting shaft is located in the inside of mounting hole, so that lock ring 4 can rotate independently, it is convenient to tighten box cover 1 and box body 9, the both sides of one end of box body 9 are equipped with bottom connecting piece 8 symmetrically, the both sides of one end of bottom connecting piece 8 are equipped with insertion pipe symmetrically, and the inside of insertion pipe is equipped with connecting bolt, bottom connecting piece 8 is connected with box body 9 through connecting bolt, the position of bottom connecting piece 8 is fixed, and when bottom connecting piece 8 is damaged, it is also convenient to replace it, the bottom of one end of bottom connecting piece 8 is equipped with lock catch 6, one side of lock catch 6 is equipped with lock hole 7, one end of lock ring 4 is equipped with through slot 5, and through slot 5 and lock catch 6 are mutually adapted.
[0022] Working principle: when the box needs to be sealed, first cover the box cover 1 on the top of the box body 9, then turn down the hinge plate 3 and the lock ring 4, then align the through slot 5 on the lock ring 4 with the lock catch 6 and insert it, so that the lock catch 6 enters the inside of the through slot 5, tightens the box cover 1 and the box body 9, thereby limiting them, finally the external lock is inserted into the inside of the lock hole 7, the lock ring 4 is limited to the outside of the lock catch 6, thereby ensuring the anti-theft effect.
[0023] It is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and can be realized in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims involved.
[0024] In the description of the present application, unless otherwise specified, the meaning of "multiple" is two or more; the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and are not intended to indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" and the like are only for descriptive purposes and cannot be understood as indicating or implying relative importance.
[0025] In the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
Claims
1. A novel plastic duckbill lock structure special for EPP box, comprising a box cover (1), characterized in that: The both sides of one end of the box cover (1) are symmetrically provided with top connecting plates (2), one end of the top connecting plate (2) is hingedly provided with a hinge plate (3), the bottom of the hinge plate (3) is hingedly provided with a lock ring (4), the bottom of the box cover (1) is provided with a box body (9), the both sides of one end of the box body (9) are symmetrically provided with bottom connecting plates (8), the bottom of one end of the bottom connecting plate (8) is provided with a lock buckle (6), one side of the lock buckle (6) is provided with a lock hole (7), one end of the lock ring (4) is provided with a through slot (5), and the through slot (5) and the lock buckle (6) are matched with each other.
2. A novel plastic duckbill lock catch structure for EPP boxes as claimed in claim 1, wherein: The both sides of the top of the box cover (1) are symmetrically provided with mounting grooves, and the inside of the mounting grooves is provided with connecting holes, the bottom of the top connecting plate (2) is provided with a plurality of connecting pipes, and the connecting pipes are located in the inside of the connecting holes.
3. A novel plastic duckbill lock catch structure for EPP boxes as claimed in claim 1, wherein: The both sides of the hinge plate (3) are symmetrically provided with mounting holes, the both sides of the lock ring (4) are symmetrically provided with connecting shafts, and the connecting shafts are located in the inside of the mounting holes.
4. The novel plastic duckbill lock catch structure for EPP boxes according to claim 1, characterized in that: The both sides of one end of the bottom connecting plate (8) are symmetrically provided with insertion pipes, and the inside of the insertion pipes is provided with connecting bolts, and the bottom connecting plate (8) is connected with the box body (9) through the connecting bolts.
5. A novel plastic duckbill lock catch structure for EPP boxes as claimed in claim 1, wherein: One end of the box cover (1) is provided with a handle.
6. A novel plastic duckbill lock catch structure for EPP boxes as claimed in claim 1, wherein: The bottom of the hinge plate (3) is provided with a connecting groove, and the lock ring (4) is located in the inside of the connecting groove.
7. A novel plastic duckbill lock catch structure for EPP boxes as claimed in claim 1, wherein: One end of the top connecting plate (2) is provided with a hidden groove, and the hinge plate (3) is hingedly located in the inside of the hidden groove.