Sandwich machine lock catch connecting structure

By adopting a detachable fixed cover and clamping plate structure on the sandwich maker, the problem of locking failure caused by buckle wear is solved, enabling quick locking and convenient replacement, improving the user experience and equipment durability.

CN224219970UActive Publication Date: 2026-05-12NINGBO PANDA ELECTRIC APPLIANCE CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
NINGBO PANDA ELECTRIC APPLIANCE CO LTD
Filing Date
2025-04-18
Publication Date
2026-05-12

AI Technical Summary

Technical Problem

The latches of traditional sandwich makers are prone to wear, which can cause the locking function to fail and make it inconvenient to replace parts.

Method used

It adopts a detachable fixed cover and clamping plate structure. Through the cooperation of components such as clamping plate, locking groove, elastic element, and fixed shaft, the top cover can be quickly locked and opened, and the clamping plate can be easily replaced.

Benefits of technology

This improves the convenience of locking operations and the ease of replacing the locking plate, ensuring the stability and durability of the locking structure.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model belongs to the technical field of sandwich machines, and discloses a sandwich machine lock catch connecting structure which comprises an upper cover and a base, the front end of the upper cover is detachably connected with a fixing cover, a clamping plate is arranged in the middle of the fixing cover, and the top end of the clamping plate is elastically arranged in the upper cover. A locking groove corresponding to the clamping plate is formed in the front end of the base, and the bottom end of the clamping plate is clamped in the locking groove. The upper cover can be quickly closed and opened, when the upper cover needs to be opened, only the top end of the clamping plate needs to be squeezed upwards, the upper cover is lifted upwards together with the clamping plate, additional operation is not needed, when the upper cover needs to be closed with the base, only the upper cover needs to be swung downwards till the upper cover is attached to the base, and in the period, the upper cover and the base can be closed. The buckle firstly slides on the surface of the lock rod until the buckle is inserted into the lock groove, and then the buckle can be automatically clamped below the lock rod, so that locking between the upper cover and the base is realized, and the operation is more convenient.
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Description

Technical Field

[0001] This utility model belongs to the field of sandwich maker technology, specifically a sandwich maker locking connection structure. Background Technology

[0002] Sandwich makers are a common cooking tool that can handle various cooking methods such as grilling, baking, and frying. They are an excellent tool for making breakfast and have a large market demand. Currently, most sandwich makers on the market use a double-opening design, with the top cover and base connected by a hinge structure. When in use, the top cover is opened and flipped 180 degrees. Sandwich makers are generally double-sided heating.

[0003] Traditional sandwich maker latches are typically made of plastic and molded as a single piece with the plastic casing. Over time, this leads to severe wear at the latch tip, causing it to gradually lose its elasticity and resulting in locking failure (such as insecure locking or complete inability to lock). Furthermore, this one-piece design makes component replacement difficult. Therefore, we provide a sandwich maker latch connection structure to solve these problems. Utility Model Content

[0004] To address the problems mentioned in the background section, this utility model provides a sandwich maker locking connection structure.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a sandwich maker locking connection structure, including an upper cover and a base, wherein a fixed cover is detachably connected to the front end of the upper cover, a locking plate is provided in the middle of the fixed cover, and the top end of the locking plate is elastically disposed inside the upper cover, and a locking groove corresponding to the locking plate is opened at the front end of the base, and the bottom end of the locking plate is engaged in the locking groove.

[0006] Preferably, an elastic element is fixedly connected to the inner top wall of the upper cover, the bottom end of the elastic element is in contact with the top end of the card plate, a fixed shaft is fixedly connected to the top end of the card plate, the fixed shaft is movably connected between the fixed cover and the upper cover, a buckle is fixedly connected to the bottom end of the card plate, a locking rod is fixedly connected to the locking groove, and the buckle is engaged below the locking rod.

[0007] Preferably, a positioning frame is provided in the middle of the fixed cover, and the card plate is located in the positioning frame. Two opposing first positioning grooves are opened at the top of the positioning frame. Two positioning plates are fixedly connected to the inner top wall of the upper cover. A second positioning groove is opened on the bottom surface of each of the two positioning plates. The fixed shaft is rotatably connected between the second positioning groove and the first positioning groove.

[0008] Preferably, the length of the fixed shaft is greater than the length of the positioning frame and the distance between the two positioning plates.

[0009] Preferably, a cross plate is fixedly connected to the top of the card plate, and the elastic element is sleeved on the cross plate.

[0010] Preferably, the inner top wall of the upper cover is fixedly connected to a plurality of connecting posts, and the fixed cover and each connecting post are connected by screws.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] This invention, through the cooperative arrangement of a fixed cover, a locking plate, a locking groove, an elastic element, a fixed shaft, a buckle, a locking rod, a positioning frame, a first positioning groove, a positioning plate, a second positioning groove, and a connecting column, enables the rapid closing and opening of the upper cover. When the upper cover needs to be opened, simply press the top of the locking plate upwards and simultaneously lift the upper cover upwards; no additional operation is required. When the upper cover needs to be closed with the base, simply swing the upper cover downwards until it fits against the base. During this process, the buckle will first slide on the surface of the locking rod until it inserts into the locking groove, at which point it will automatically close. The clip is attached below the locking rod to lock the top cover and the base, making operation more convenient. When the clip needs to be replaced due to long-term wear, simply remove the screws on the fixing cover to remove it from the top cover. Then, the operator can directly take out the clip in the positioning frame with the clip facing upwards. The new clip is then reinserted into the positioning frame so that the fixing shaft rests in the two first positioning slots. Finally, the fixing cover is connected to the connecting column with screws, which completes the quick replacement of the clip. This structure is not only compact but also easy to use and replace. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the structure of this utility model from below;

[0015] Figure 3 This is a schematic diagram of the structure of the top cover of this utility model;

[0016] Figure 4 This is a schematic diagram of the structure of the base of this utility model;

[0017] Figure 5 This is a schematic diagram of the structure of the upper cover of this utility model after the fixing cover is removed;

[0018] Figure 6 This is a schematic diagram of the structure of the fixing cover of this utility model;

[0019] Figure 7 This is a schematic diagram showing the connection between the fixing cover and the positioning frame of this utility model;

[0020] Figure 8 This is a schematic diagram of the structure of the card plate of this utility model;

[0021] Figure 9 This utility model Figure 5 An enlarged schematic diagram of the structure at point A in the middle.

[0022] In the diagram: 1. Top cover; 2. Base; 3. Clamping plate; 4. Fixing cover; 5. Locking groove; 6. Locking rod; 7. Connecting column; 8. Buckle; 9. Fixing shaft; 10. Elastic element; 11. Positioning frame; 12. First positioning groove; 13. Positioning plate; 14. Second positioning groove. Detailed Implementation

[0023] 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.

[0024] like Figure 1-9 As shown, this embodiment proposes a sandwich maker locking connection structure, including an upper cover 1 and a base 2, with the rear end of the upper cover 1 hinged to the base 2. The upper cover 1 and base 2 are existing mature components. A fixing cover 4 is detachably connected to the front end of the upper cover 1. The middle part of the fixing cover 4 and the front end of the base 2 are both recessed to facilitate the insertion of a person's hand to open the upper cover 1. A locking plate 3 is provided in the middle of the fixing cover 4, and the top end of the locking plate 3 is elastically positioned inside the upper cover 1. The fixing cover 4 is used to quickly assemble the locking plate 3 into the upper cover 1. When the locking plate 3 is damaged and needs to be replaced, simply remove the fixing cover 4 from the upper cover 1, and then directly remove and replace the locking plate 3. The locking plate 3 has an automatic reset feature. The base 2... The front end has a locking groove 5 corresponding to the card plate 3, and the bottom end of the card plate 3 is engaged in the locking groove 5. With the above structure, the top end of the card plate 3 can be pressed upwards, so that the bottom end of the card plate 3 is away from the locking groove 5, thereby releasing the lock between the upper cover 1 and the base 2. When the person presses the top end of the card plate 3 and then lifts the upper cover 1 upwards, it can be opened without any additional operation. When the upper cover 1 is closed downwards with the base 2, the card plate 3 can automatically engage in the locking groove 5, realizing the lock between the upper cover 1 and the base 2. The operation is more convenient. The mechanics, parts and equipment in this device all adopt conventional models in the existing technology. In addition, the circuit connection adopts conventional connection methods in the existing technology, which will not be described in detail here.

[0025] like Figures 7 to 9As shown, an elastic element 10 is fixedly connected to the inner top wall of the upper cover 1. The elastic element 10 is a compression spring. The bottom end of the elastic element 10 contacts the top end of the locking plate 3. A fixed shaft 9 is fixedly connected to the top end of the locking plate 3. The fixed shaft 9 is movably connected between the fixed cover 4 and the upper cover 1. A buckle 8 is fixedly connected to the bottom end of the locking plate 3. A locking rod 6 is fixedly connected in the locking groove 5, and the buckle 8 is engaged below the locking rod 6. With the setting of the elastic element 10, the locking plate 3 has the effect of automatic reset. When the locking plate 3 is released from pressure, it can be automatically squeezed downward and swung back to reset under the elastic force of the elastic element 10, ensuring that the buckle 8 is locked in the locking groove 5 with the locking rod 6. The elastic element 10 is fixedly installed inside the upper cover 1. When the card plate 3 is damaged due to long-term wear and needs to be replaced, there is no need to remove the elastic element 10. With the setting of the fixed shaft 9, the card plate 3 can swing around the fixed shaft 9 between the fixed cover 4 and the upper cover 1, thereby realizing the locking and opening effect between the upper cover 1 and the base 2. With the setting of the buckle 8 and the locking rod 6, when the upper cover 1 is closed downward with the base 2, the buckle 8 will first slide on the surface of the locking rod 6 until the buckle 8 is inserted into the locking groove 5 and then locked under the locking rod 6. At this time, the upper cover 1 will automatically lock with the base 2.

[0026] like Figure 6 and Figure 7 As shown, a positioning frame 11 is provided in the middle of the fixed cover 4, and the clamping plate 3 is located inside the positioning frame 11. Two opposing first positioning grooves 12 are opened at the top of the positioning frame 11. Two positioning plates 13 are fixedly connected to the inner top wall of the upper cover 1. The bottom surface of each of the two positioning plates 13 is provided with a second positioning groove 14. The fixed shaft 9 is rotatably connected between the second positioning groove 14 and the first positioning groove 12. Since the fixed shaft 9 can rotate between the second positioning groove 14 and the first positioning groove 12, when the top of the clamping plate 3 is squeezed, the clamping plate 3 will move through the fixed shaft 9. The rotation of the card plate 3 causes the bottom end of the card plate 3 to swing outward, thereby unlocking the upper cover 1 and the base 2 through the rotation and swing of the card plate 3. With the above structure, the card plate 3 can be quickly positioned. After the card plate 3 is inserted into the positioning frame 11, the fixing shaft 9 can be placed in the two first positioning slots 12 to ensure that the card plate 3 will not fall off and to ensure the stability of the card plate 3. Then, after the fixing cover 4 is installed on the upper cover 1, the fixing shaft 9 is placed in the two second positioning slots 14, thereby ensuring the normal use of the card plate 3.

[0027] like Figure 7 and Figure 9 As shown, the length of the fixed shaft 9 is greater than the length of the positioning frame 11 and the distance between the two positioning plates 13. This not only enables the fixed shaft 9 to drive the card plate 3 to swing normally, but also ensures that the fixed shaft 9 can be quickly placed in the positioning frame 11, thus achieving the effect of quick assembly and disassembly, and enabling the fixed shaft 9 to slide stably between the first positioning groove 12 and the second positioning groove 14.

[0028] like Figure 7 and Figure 8 As shown, a cross plate is fixed to the top of the clamping plate 3, and the elastic element 10 is sleeved on the cross plate. The cross plate can position the elastic element 10, ensuring that the elastic force of the elastic element 10 can act normally on the top of the clamping plate 3, and preventing the bottom of the elastic element 10 from tilting on the clamping plate 3.

[0029] like Figure 2 , Figure 3 , Figure 5 and Figure 9 As shown, several connecting posts 7 are fixed to the inner top wall of the upper cover 1. The fixing cover 4 and each connecting post 7 are connected by screws. With the above structure, when the card plate 3 needs to be replaced, simply remove the screws on the fixing cover 4 to remove the fixing cover 4 from the upper cover 1. Then, the personnel can directly take out the card plate 3 facing upward in the positioning frame 11, and then reinsert the new card plate 3 into the positioning frame 11 so that the fixing shaft 9 rests in the two first positioning slots 12. Finally, the fixing cover 4 is connected to the connecting post 7 by screws, and the card plate 3 can be quickly replaced.

[0030] The working principle and usage of this utility model are as follows: When the upper cover 1 is closed downwards with the base 2, the buckle 8 will first slide on the surface of the locking rod 6 until it is inserted into the locking groove 5 and automatically engages below the locking rod 6. Under the elastic force of the elastic element 10, the buckle 8 will be firmly locked at the locking rod 6. When it is necessary to open the upper cover 1, simply press the top of the locking plate 3, causing the locking plate 3 to swing through the fixed shaft 9, thereby pulling the buckle 8 out of the locking groove 5, thus releasing the locking effect between the upper cover 1 and the base 2. Next, lift the top cover 1 upwards together to open it normally, making the operation more convenient. When the card plate 3 needs to be replaced due to wear caused by frequent use, simply remove all the screws on the fixing cover 4 and remove the fixing cover 4 from the top cover 1. Then, the personnel can directly take out the card plate 3 facing upwards in the positioning frame 11, and then reinsert the new card plate 3 into the positioning frame 11 so that the fixing shaft 9 rests in the two first positioning slots 12. Finally, connect the fixing cover 4 to the connecting post 7 with screws to complete the quick replacement of the card plate 3.

[0031] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. Content not described in detail in this specification belongs to the prior art known to those skilled in the art.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sandwich maker locking connection structure, comprising a top cover (1) and a base (2), characterized in that: The front end of the upper cover (1) is detachably connected to a fixed cover (4). A card plate (3) is provided in the middle of the fixed cover (4), and the top end of the card plate (3) is elastically set inside the upper cover (1). The front end of the base (2) is provided with a locking groove (5) corresponding to the card plate (3), and the bottom end of the card plate (3) is engaged in the locking groove (5).

2. The sandwich maker locking connection structure according to claim 1, characterized in that: An elastic element (10) is fixedly connected to the inner top wall of the upper cover (1). The bottom end of the elastic element (10) is in contact with the top end of the card plate (3). A fixed shaft (9) is fixedly connected to the top end of the card plate (3). The fixed shaft (9) is movably connected between the fixed cover (4) and the upper cover (1). A buckle (8) is fixedly connected to the bottom end of the card plate (3). A locking rod (6) is fixedly connected in the locking groove (5), and the buckle (8) is engaged below the locking rod (6).

3. The sandwich maker locking connection structure according to claim 2, characterized in that: The fixed cover (4) is provided with a positioning frame (11) in the middle, and the card plate (3) is located in the positioning frame (11). The top of the positioning frame (11) has two opposing first positioning grooves (12). The inner top wall of the upper cover (1) is fixedly connected to two positioning plates (13). The bottom surface of the two positioning plates (13) is provided with a second positioning groove (14). The fixed shaft (9) is rotatably connected between the second positioning groove (14) and the first positioning groove (12).

4. The sandwich maker locking connection structure according to claim 3, characterized in that: The length of the fixed shaft (9) is greater than the length of the positioning frame (11) and the distance between the two positioning plates (13).

5. The sandwich maker locking connection structure according to claim 2, characterized in that: The top of the card plate (3) is fixedly connected to a cross plate, and the elastic element (10) is sleeved on the cross plate.

6. The sandwich maker locking connection structure according to claim 1, characterized in that: The inner top wall of the upper cover (1) is fixedly connected with several connecting posts (7), and the fixed cover (4) and each connecting post (7) are connected by screws.