Intelligent hot-pressing sandwich machine

Abstract

The utility model relates to a technical field of club sandwich machine, especially points to an intelligent hot pressing club sandwich machine, including main part and upper cover, the main part is equipped with lower baking tray, and the upper cover is equipped with upper baking tray, and the upper cover is connected the main part through elastic hinge, be equipped with the lock catch structure on the main part, and the lock catch structure is connected with the upper cover cooperation, be equipped with the elastic element on the lower baking tray, and the upper baking tray presses the club sandwich and makes the elastic element adhere to the lower baking tray, and the upper cover opens under the action of elastic hinge, and the elastic element pops up to make the club sandwich separate from the lower baking tray, be equipped with the controller on the main part, and the controller passes through circuit connection lower baking tray, upper baking tray and lock catch structure, the utility model discloses through the lock catch structure and ensures that the upper cover and main part close when the baking tray is closely adhered and forms the frying oven, and the elastic element pops up the club sandwich automatically after unlocking and makes it separate from the baking tray, avoids the food material burnt because of the heat of lower baking tray, and maintains the temperature of lower baking tray and upper baking tray through the controller simultaneously, reduces the waiting time of repeated heating, improves the efficiency of continuous use.

Description

Technical Field

[0001] This utility model relates to the field of sandwich machine technology, and specifically to an intelligent hot-press sandwich machine. Background Technology

[0002] With the fast pace of modern life, the demand for convenient and efficient cooking equipment is increasing. As a popular portable food, sandwich makers require equipment that balances cooking efficiency and user experience. Traditional sandwich makers commonly suffer from problems such as food sticking together after baking, making them inconvenient to remove, especially when the baking pan is hot, which can easily cause burns and make it difficult to remove the sandwich intact. Existing technologies using electromagnet-controlled automatic opening structures, such as the double-headed sandwich maker disclosed in Chinese patent CN211484160U, while employing an electromagnetic control mechanism and achieving automatic opening of the pressing head, have two significant drawbacks: first, residual heat from the baking pan causes the bottom of sandwiches that are not removed in time to continue to burn; second, reheating the cooled baking pan requires additional waiting time, affecting continuous cooking efficiency.

[0003] Therefore, existing technologies still need to be improved and developed. Utility Model Content

[0004] The purpose of this invention is to provide an intelligent hot-press sandwich maker, which has the advantages of preventing sandwiches from sticking to the baking tray, ensuring that the bottom of the sandwich is continuously heated and burnt, and allowing for quick baking without stopping the heating of the baking tray.

[0005] This utility model provides an intelligent hot-press sandwich maker, the technical solution of which is as follows: An intelligent hot-press sandwich maker includes a main body and a top cover. The main body is provided with a lower baking tray, and the top cover is provided with an upper baking tray. The top cover is connected to the main body through an elastic hinge. The main body is characterized by a locking structure that engages with the top cover to lock the top cover onto the main body, thereby pairing the upper and lower baking trays to form a grilling cavity for accommodating sandwiches. The lower baking tray is provided with an elastic element. When the top cover and the main body are closed, the upper baking tray presses the sandwich, causing the elastic element to adhere to the lower baking tray. When the locking structure is unlocked, the top cover opens under the action of the elastic hinge, and the elastic element springs upward, causing the sandwiches to detach from the lower baking tray. The main body is provided with a controller, which is connected to the lower baking tray, the upper baking tray, and the locking structure via a circuit.

[0006] Furthermore, this utility model also proposes that the elastic element includes a lifting spring, and several lifting springs are provided on both sides of the lower baking pan; the first end of the lifting spring is located above the lower baking pan, and the second end of the lifting spring is connected to the main body.

[0007] Furthermore, this utility model also proposes that the lower baking tray is provided with several clearance grooves, and the lifting spring is paired with the clearance grooves one by one; when the upper cover and the main body are closed, the upper baking tray presses down on the lifting spring, so that the lifting spring passes through the clearance groove and the first end of the lifting spring is attached to the lower baking tray; when the upper cover is opened, the lifting spring pops out of the clearance groove, so that the first end of the lifting spring is positioned above the lower baking tray.

[0008] Furthermore, this utility model also proposes that the lower baking pan includes a base and a rim disposed around the base, the height of the rim being higher than the height of the base, and a clearance groove being formed on the rim, the bottom height of the clearance groove being equal to the bottom height of the base.

[0009] Furthermore, this utility model also proposes that hinge seats are provided on both sides of the main body, and the second end of the supporting spring is connected to the hinge seat.

[0010] Furthermore, this utility model also proposes that the locking structure includes a lock box bracket, a lock hook, and a lock plate. The lock box bracket is fixedly installed inside the main body, and a lock groove is provided on the front edge surface of the main body. The lock hook is connected to the lock box bracket through a transverse rotation shaft. The lock groove is provided on the front edge surface of the main body, and a first hook head is provided on the first end of the lock hook. The first hook head can pass through the lock groove and thus extend out of the front edge surface of the main body. The lock plate is located on the front edge of the upper cover, and the first hook head can snap onto the lock plate so that the upper cover closes onto the main body.

[0011] Furthermore, this utility model also proposes that the upper end of the lock hook is provided with a second hook head, the first hook head and the second hook head are arranged at intervals, the second hook head can pass through the lock groove to extend out of the front edge of the main body, and the second hook head can snap onto the lock piece so that the upper cover is closed on the main body.

[0012] Furthermore, this utility model also proposes that the lock box bracket is provided with a return spring, the return spring abutting the second end of the lock hook, so that the first hook head and the second hook head always tend to pass through the lock groove and extend out of the front edge surface of the main body; the lock box bracket is provided with a transmission link, the transmission link is rotatably connected to the lock box bracket through a vertical rotation shaft, the first end of the transmission link abutting the second end of the lock hook; the main body is provided with a manual on / off switch, the manual on / off switch being paired with the second end of the transmission link.

[0013] Furthermore, this utility model also proposes that the lock box bracket is equipped with an electromagnetic driver, the actuating end of the electromagnetic driver is paired with the second end of the lock hook, and the controller is connected to the electromagnetic driver through a circuit.

[0014] Furthermore, this utility model also proposes that the elastic hinge includes a support frame and a hinge shaft. The support frame is located on the rear side of the lower baking pan and fixedly mounted on the main body. A rotating arm is provided on the rear edge of the upper cover. The rotating arm is connected to the support frame through the hinge shaft. A torsion spring is provided on the hinge shaft. The two ends of the torsion spring are respectively connected to the support frame and the rotating arm.

[0015] As can be seen from the above, the intelligent hot press sandwich maker provided by this utility model ensures that the baking pan fits tightly with the main body when the lid is closed to form a grilling cavity through the locking structure. After the elastic element is unlocked, it automatically pops up the sandwich to remove it from the baking pan, avoiding the food from burning due to the heat of the lower baking pan. At the same time, the controller maintains the temperature of the lower baking pan and the upper baking pan, reducing the waiting time for repeated heating and improving the efficiency of continuous use. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the overall structure of this utility model in the open state;

[0018] Figure 3 This is a schematic diagram of the overall disassembled structure of this utility model;

[0019] Figure 4 This is a side sectional view of the structure of this utility model;

[0020] Figure 5 This is a schematic diagram of the locking structure on the main body of this utility model;

[0021] Figure 6 This is a schematic diagram of the overall structure of the present invention in its clean state.

[0022] In the diagram: 1. Main body; 2. Top cover; 3. Lifting spring; 4. Lock box bracket; 5. Sandwich; 11. Lower baking tray; 12. Controller; 13. Clearance groove; 14. Hinge seat; 15. Lock groove; 16. Support frame; 17. Hinge shaft; 18. Manual on / off switch; 110. Chassis; 111. Plate edge; 21. Upper baking tray; 22. Locking plate; 23. Rotating arm; 24. Torsion spring; 41. Locking hook; 42. Horizontal rotation shaft; 43. First hook; 44. Second hook; 45. Return spring; 46. Transmission link; 47. Vertical rotation shaft; 48. Electromagnetic actuator. Detailed Implementation

[0023] The technical solution of this utility model will be described below with reference to the accompanying drawings and embodiments.

[0024] Existing sandwich makers automatically open the press head after baking, but the residual heat of the baking tray may cause the bottom of sandwiches that are not removed in time to burn. At the same time, the cooled baking tray affects the efficiency of the next use and needs to be reheated, which reduces work efficiency and user experience.

[0025] Through analysis, the inventors of this invention recognized the need for a technical solution that could automatically detach food from the baking pan after baking while maintaining the pan's temperature. Based on this, a solution is proposed that uses a locking structure to control the baking pan's closure, combined with elastic elements to achieve automatic demolding, and a controller to maintain the pan's temperature, thereby solving the problems of residual heat causing burning and cooling affecting efficiency.

[0026] like Figure 1-6 As shown, this utility model proposes an intelligent hot-press sandwich maker, including a main body 1 and an upper cover 2. The main body 1 is provided with a lower baking tray 11, and the upper cover 2 is provided with an upper baking tray 21. The upper cover 2 is connected to the main body 1 by an elastic hinge. The main body 1 is provided with a locking structure, which is connected to the upper cover 2 to lock the upper cover 2 onto the main body 1, so that the upper baking tray 21 and the lower baking tray 11 are paired to form a grilling cavity. The lower baking tray 11 is provided with an elastic element. When the upper cover 2 is closed, the upper baking tray 21 is pressed against the lower baking tray 11 by the sandwich 5. When unlocking, the elastic hinge drives the upper cover 2 to open, and the elastic element bounces upward to make the sandwich 5 disengage from the lower baking tray. The main body 1 is provided with a controller 12, which is connected to the lower baking tray, the upper baking tray and the locking structure through a circuit.

[0027] The locking structure refers to a device that rigidly locks the upper cover 2 to the main body 1 using mechanical or electromagnetic means. Specifically, it can employ a hook-shaped locking element that works in conjunction with a locking plate to ensure the grilling cavity is sealed. The elastic element is a component that can deform under pressure and return to its original shape after the pressure is released. Specifically, it can be a lifting spring, located on both sides of the lower grill pan 11, used to lift the sandwich 5 away from the lower grill pan 11 when unlocking. The elastic hinge is a connection structure with an elastic reset function. Specifically, it can be a hinge shaft 17 with a torsion spring, used to drive the upper cover 2 to automatically open. The controller is a circuit module that controls heating and locking actions. Specifically, it can be a microprocessor used to coordinate the grill pan temperature and the locking status.

[0028] Specifically, when the locking mechanism is engaged, the upper cover 2 and the main body 1 close to form a sealed baking cavity. The upper baking pan 2 presses down on the sandwich, causing the elastic element to adhere to the surface of the lower baking pan 11. At this time, the controller starts the heating program. After baking, the controller 12 sends an unlocking signal, the locking mechanism releases the upper cover 2, and the torsion spring of the elastic hinge drives the upper cover 2 to automatically spring open. At the same time, the elastic element springs upward, pushing the sandwich 5 away from the surface of the lower baking pan 11, preventing the food from burning due to the heat from the lower baking pan 11. After unlocking, the controller keeps the lower baking pan 11 and the upper baking pan 21 powered on to maintain their temperature, thereby preventing the baking pans from cooling down and affecting subsequent use efficiency.

[0029] Through the above technical solution, this utility model realizes automatic demolding of the sandwich 5 after baking, effectively avoiding the food from burning due to the heat of the lower baking pan 11; the controller 12 maintains the temperature of the lower baking pan 11 and the upper baking pan 21, reducing the waiting time for repeated heating and improving the efficiency of continuous use.

[0030] This utility model further proposes that the elastic element includes a lifting spring 3. Several lifting springs 3 are provided on both sides of the lower baking pan 11. The first end of the lifting spring 3 is located above the lower baking pan 11, and the second end is connected to the main body 1.

[0031] The lifting spring 3 refers to a thin sheet structure with elastic deformation capability. It can be made of stainless steel or spring steel sheet by stamping, achieving deformation and return functions through the elasticity of the material itself. When pressed, the lifting spring 3 bends downwards and automatically springs back to its initial position after the pressure is released. Its elastic modulus can be controlled within a certain range to adapt to different food weights. The arrangement of several lifting springs 3 on both sides of the lower baking pan 11 means that multiple independent lifting springs 3 are symmetrically arranged on the left and right edges of the lower baking pan 11. Specifically, a layout of 2-5 springs on each side can be used, with the spacing between adjacent springs set to 20-30mm to ensure uniform support for the sandwich 5. The first end of the lifting spring 3 being located above the lower baking pan means that the initial position of the end of the lifting spring 3 near the center of the baking pan is higher than the surface of the lower baking pan 11. Specifically, the initial position of the lifting spring 3 can be set 5-15mm higher than the surface of the lower baking pan 11, and it is completely flattened to the surface of the lower baking pan 11 when closed. The connection between the second end of the lifting spring 3 and the main body 1 means that the far end of the lifting spring 3 is installed on the main body 1 through a fixed structure. Specifically, it can be assembled by screw fixing, snap-fit ​​or hinge, so that the lifting spring 3 forms a cantilever beam structure, ensuring that the lifting spring 3 only produces vertical elastic displacement at the first end.

[0032] Specifically, when the upper cover 2 is closed, the upper baking tray 21 presses down on the sandwich 5, forcing the first end of the lifting spring 3 to contact the surface of the lower baking tray 11. When the locking structure unlocks, the upper cover 2 opens under the action of the elastic hinge, and the lifting spring 3 loses its pressure constraint. Its elastic restoring force drives the first end to bounce upwards by 5-15mm, lifting the entire sandwich 5 off the surface of the lower baking tray 11. The symmetrically distributed lifting springs 3 on both sides move synchronously, applying lifting force evenly through multiple contact points to ensure that the bottom surface of the sandwich 5 is completely separated from the lower baking tray 11, avoiding local adhesion, and at the same time, preventing the bottom surface of the sandwich 5 from burning. The rigid connection between the second end of the lifting spring 3 and the main body 1 forms a stable fulcrum, constraining the lifting spring 3 to move only in the vertical direction, preventing the sandwich 5 from tilting due to lateral displacement.

[0033] Through the above technical solution, the elastic lifting action of the lifting spring 3 allows the sandwich 5 to automatically detach from the lower baking tray 11, eliminating the need for manual prying. This protects the integrity of the food and prevents the risk of burns to the user. The symmetrically distributed lifting springs 3 on both sides ensure that the sandwich 5 is subjected to balanced force, avoiding cleaning difficulties caused by residue on one side and significantly improving the user experience.

[0034] This utility model further proposes that the lower baking pan 11 is provided with several clearance grooves 13, and the lifting spring 3 is paired with the clearance groove 13 one by one; when the upper cover 2 and the main body 1 are closed, the upper baking pan 21 presses down on the lifting spring 3 through the sandwich 5, so that the lifting spring 3 passes through the clearance groove 13 and the first end of the lifting spring 3 is attached to the lower baking pan 11; when the upper cover 2 is opened, the lifting spring 3 pops out of the clearance groove 13, so that the first end of the lifting spring 3 is positioned above the lower baking pan 11.

[0035] The relief groove 13 refers to a recessed structure formed on the surface of the lower baking pan 11. It can be implemented as a rectangular or arc-shaped groove, with its depth matching the thickness of the supporting spring 3. This recess accommodates the pressed-down supporting spring 3 when closed, preventing it from protruding and causing localized deformation of the sandwich 5. The one-to-one pairing of the supporting spring 3 and the relief groove 11 means that each supporting spring 3 corresponds to one relief groove 13. This can be achieved through symmetrical or spaced arrangement, ensuring that the supporting spring 3 is fully embedded in its corresponding relief groove 13 when closed, preventing interference between the supporting spring 3 and the surface of the lower baking pan 11, thus guaranteeing the sealing of the grilling cavity.

[0036] Specifically, when the top cover 2 is closed, the downward pressure applied by the upper baking tray 21 forces the lifting spring 3 to move downward along the side wall of the relief groove 13 until the first end of the lifting spring 3 is flush with the surface of the lower baking tray 11. At this time, the depth and shape design of the relief groove 13 ensures that the lifting spring 3 is completely contained within the relief groove 13, preventing the lifting spring 3 from exerting additional pressure on the sandwich 5. When the top cover 2 is opened, the lifting spring 3 pops out from the relief groove 13 under its own elastic restoring force, and its first end rises above the surface of the lower baking tray 11, forming a lifting plane. At this time, the side wall of the relief groove 13 provides vertical guidance for the lifting spring 3, ensuring the stability of the lifting action of the lifting spring 3 and preventing the lifting spring 3 from deviating or getting stuck.

[0037] Through the above technical solution, this utility model solves the problem of uneven pressure on the sandwich 5 caused by the inability of the lifting spring 3 to completely avoid the sandwich 5 when it is closed. At the same time, the guiding design of the avoidance groove ensures that the spring effectively lifts the sandwich 5 when it is open, avoiding the bottom of the sandwich 5 from being burnt or sticking due to the temperature of the lower baking pan 11, thus improving demolding efficiency and heating uniformity.

[0038] The present invention further proposes that the lower baking tray 11 includes a base 110 and a tray edge 111 disposed around the base 110. The height of the tray edge 111 is higher than the height of the base 110. An avoidance groove 13 is formed on the tray edge 111, and the height of the bottom of the avoidance groove 13 is equal to the height of the bottom of the base 110.

[0039] The base 110 refers to the main planar area of ​​the lower baking pan 11 that supports food. It can be implemented using a rectangular or circular metal plate, and its surface can be coated with an anti-stick coating to reduce the risk of food sticking. The rim 111 refers to the raised structure surrounding the edge of the base 110, which can be implemented using a metal edging integrally formed with the base. Its height is set higher than the surface of the base 110 to create a space for food to be contained. The clearance groove 13 refers to a through-hole formed on the rim 111. It can be formed by stamping a vertical through-hole on the side wall of the rim, with its bottom flush with the bottom surface of the base 110 to accurately guide the movement trajectory of the lifting spring 3.

[0040] Specifically, the raised structure formed by the rim 111, when closed, together with the upper baking pan 21, constitutes a closed grilling cavity, physically preventing food from overflowing. When the lifting spring 3 is pressed, its end moves vertically downward along the relief groove 13 until it is flush with the bottom surface of the base 110. After the locking structure is unlocked, the lifting spring 3 springs vertically upward along the relief groove 13, using the guiding effect of the side wall of the rim 111 to stably push the food away from the surface of the base 110. At the same time, the flush design between the bottom of the relief groove 13 and the bottom surface of the base 110 eliminates the residual gap when the lifting spring 3 retracts, preventing heat from accumulating in the gap and causing local overheating.

[0041] This utility model further proposes that the main body 1 is provided with hinge seats 14 on both sides, and the second end of the supporting spring 3 is connected to the hinge seat 14.

[0042] The hinge seat 14 refers to the rigid support structure fixed on both sides of the main body 1. It can be made of metal casting or high-strength plastic injection molding. Its installation position is perpendicular to the clearance groove 13 of the lower baking tray 11. This structure provides a stable force transmission path for supporting the spring 3, avoiding metal fatigue fracture at the root of the spring due to repeated bending.

[0043] The second end connection of the lifting spring 3 refers to the movable mechanical connection between the end of the spring and the hinge seat 14, which can be achieved through a rotating shaft or a snap-locking method. This connection method allows the lifting spring 3 to maintain a linear deformation trajectory when it is pressed and closed, and to form a fixed rotation fulcrum when it rebounds and opens, ensuring that the lifting spring 3 always moves along a preset path.

[0044] Specifically, when the top cover 2 is closed, the hinge seat 14 acts as a rigid support point, bearing the vertical pressure transmitted by the lifting spring 3, ensuring that the first end of the lifting spring 3 is accurately embedded in the clearance groove 13. At this time, the lifting spring 3 is in a horizontal state, and the reaction force generated by its elastic deformation is evenly distributed on the contact surface of the hinge seat 14. When the top cover 2 is opened, the hinge seat 14 acts as a fixed fulcrum, guiding the second end of the lifting spring 3 to rotate along the pivot, causing the first end of the lifting spring 3 to spring upward at a constant angle, ensuring that the lifting springs 3 on both sides lift synchronously. This connection method eliminates the lateral offset of the lifting spring 3 through mechanical limiting, avoiding the residue of the sandwich 5 caused by the jamming of the lifting spring 3 on one side.

[0045] This utility model further proposes a locking structure including a lock box bracket 4, a lock hook 41, and a lock plate 22. The lock box bracket 4 is fixedly installed inside the main body 1. A lock groove 15 is provided on the front edge surface of the main body 1. The lock hook 41 is connected to the lock box bracket 4 via a transverse rotating shaft 42. A first hook head 43 is provided on the first end of the lock hook 41. The first hook head 43 can pass through the lock groove 15 and thus extend out of the front edge surface of the main body 1. The lock plate 22 is provided on the front edge of the upper cover 2. The first hook head 43 can snap onto the lock plate 22 so that the upper cover 2 is closed on the main body 1.

[0046] Among them, the lock box bracket 4 refers to the basic component that supports the lock hook, which can be made of metal stamping or engineering plastic injection molding. Its function is to provide rigid support for the lock hook 41 and limit its movement trajectory. The transverse rotation shaft 42 refers to the pivot component that realizes the rotational movement of the lock hook 41. It can be made of stainless steel pin or shaft with bearing. Its function is to realize the locking and unlocking action of the lock hook 41 through the rotational degree of freedom. The lock groove 15 refers to the through hole structure opened on the outer shell of the main body 1. It can be made of rectangular or circular opening. Its function is to provide a path for the first hook head 43 to pass through and to constrain the movement range of the first hook head 43. The lock plate 22 refers to the metal baffle installed on the edge of the upper cover 2. It can be made of stamped L-shaped sheet metal. Its function is to form a mechanically interlocking contact surface with the first hook head 43.

[0047] Specifically, when the upper cover 2 is closed, the locking plate 22 presses down with the upper cover 2 and contacts the inclined surface of the first hook 43, forcing the locking hook 41 to rotate inward around the transverse rotation axis 42 towards the body 1. When the upper cover 2 is fully closed, the locking hook 41 rotates in the opposite direction under the action of the return spring, causing the first hook 43 to pass through the lock groove 15 and engage below the locking plate 22. At this time, the locking plate 22 and the first hook 43 form a vertical mechanical limit, preventing the upper cover 2 from accidentally popping open. To unlock, pressing the manual switch 18 drives the transmission linkage, pushing the second end of the locking hook 41 to rotate around the transverse rotation axis 42, causing the first hook 43 to disengage from the locking plate 22 and complete the unlocking process. During this process, the rotation axis of the transverse rotation axis 42 is perpendicular to the plane of the locking plate 22, forming a lever effect to reduce the unlocking operation force.

[0048] This utility model further proposes to add a second hook head 44 to the upper end of the locking hook member 41. The first hook head 43 and the second hook head 44 form a double buckle structure with the upper and lower parts spaced apart. The second hook head 44 passes through the locking groove 15, extends out of the front edge of the main body 1, and forms a buckle connection with the locking piece 22.

[0049] The second hook 44 refers to an auxiliary latching component added to the top of the locking hook 41. Specifically, it can be implemented using a metal stamping part with the same shape as the first hook 43, and its hook bending angle matches the slot of the locking plate 22. The vertical spacing means that the first hook 43 and the second hook 44 maintain a distance in the vertical direction. This can be achieved by setting a stepped mounting position on the locking hook 41 body, with the spacing value controlled within the range of 3-15 mm. The penetration height of the locking groove 15 is configured to allow the first hook 43 and the second hook 44 to pass through simultaneously. Specifically, a rectangular slot structure can be adopted, with guide slopes set at the upper and lower edges of the groove.

[0050] This utility model further proposes that the lock box bracket 4 is provided with a return spring 45, which contacts the second end of the lock hook 41, so that the first hook 43 and the second hook 44 always tend to pass through the lock groove 15 and extend out of the front edge of the main body 1; the lock box bracket 4 is provided with a transmission link 46, which is rotatably connected to the lock box bracket 4 via a vertical rotation shaft 47, and the first end of the transmission link 46 contacts the second end of the lock hook 41; the main body 1 is provided with a manual switch 18, which is paired with the second end of the transmission link 46.

[0051] The return spring 45 is an elastic element, specifically a helical spring or a leaf spring, configured to apply a continuous thrust to the second end of the locking hook 41, ensuring that the first hook 43 and the second hook 44 remain extended. The transmission link 46 is a rigid connecting member, specifically a metal or plastic link, forming a rotating pair with the lock box bracket 4 via a vertical rotation shaft 47, used to transmit manual operating force to the locking hook 41. The manual on / off switch 18 is a trigger element, specifically a button or lever, configured to contact the second end of the transmission link 46, driving the transmission link 46 to rotate around the vertical rotation shaft through user pressing.

[0052] Specifically, the return spring 45 is configured to contact the second end of the locking hook 41, ensuring that the first hook 43 and the second hook 44 always extend beyond the front edge of the main body 1 when no external force is applied, thus ensuring the locking structure is in a stable closed state. When unlocking is required, the manual switch 18 is pressed, and the transmission link 46 rotates around the vertical rotation axis 47. Its first end pushes the second end of the locking hook 41 to overcome the elastic force of the return spring 45, causing the first hook 43 and the second hook 44 to retract into the main body, thereby achieving lock separation. During this process, the elastic force of the return spring 45 combines with the mechanical transmission of the transmission link 46 to ensure the sensitivity and reliability of the unlocking action.

[0053] This utility model further proposes that the lock box bracket 4 is provided with an electromagnetic driver 48, the actuating end of the electromagnetic driver 48 is paired with the second end of the lock hook 41, and the controller 12 is connected to the electromagnetic driver 48 through a line.

[0054] The electromagnetic actuator 48 is a drive device that generates mechanical action through electromagnetic force. It can be implemented using an electromagnet or an electromagnetic push rod, and its actuating end forms a contact or non-contact linkage with the second end of the locking hook 41. The controller 12 is a circuit module with logic operation capabilities. It can be implemented using a microprocessor or a programmable logic controller, and outputs control signals to the electromagnetic actuator 48 through a preset program.

[0055] Specifically, when the controller 12 detects the preset cooking completion conditions, such as the temperature of the baking pan 11 reaching a set threshold according to the temperature sensor feedback, the controller 12 sends a power-off command to the electromagnetic actuator 48 via the circuit. After the power is off, the electromagnetic actuator 48 generates displacement at its actuating end, directly acting on the second end of the locking hook 41, forcing the locking hook 41 to rotate around the transverse rotation axis 42, causing the first hook head 43 to disengage from the latching connection of the locking piece 22. At this time, the preload of the return spring 45 is released, and the transmission link 46 is reset under the drive of the vertical rotation axis 47, completing the automatic unlocking of the latching structure.

[0056] In some specific embodiments, the actuating end of the electromagnetic actuator 48 can be configured as a push rod structure, which remains in a retracted state when energized, and pops out to press the second end of the top locking hook 41 after power is cut off. The wiring connection of the controller 12 can integrate a temperature sensor signal input port to monitor the temperature change of the lower baking pan in real time.

[0057] This utility model further proposes an elastic hinge including a support frame 16 and a hinge shaft 17. The support frame 16 is located on the rear side of the lower baking pan and fixedly mounted on the main body 1. The rear edge of the upper cover 2 is provided with a rotating arm 23. The rotating arm 23 is connected to the support frame 16 through the hinge shaft 17. The hinge shaft 17 is provided with a torsion spring 24. The two ends of the torsion spring 24 are respectively connected to the support frame 16 and the rotating arm 23.

[0058] The support frame 16 is a rigid fixed component that supports the hinge shaft 17. It can be made of metal stamping and welded to the internal frame of the main body 1, providing stable mechanical support for the hinge system. The hinge shaft 17 is a cylindrical rotating shaft that passes through the support frame 16 and the rotating arm 23. It can be made of stainless steel with a bearing structure, serving as the rotation center for the opening and closing action of the upper cover 2. The rotating arm 23 is an L-shaped metal arm rigidly connected to the rear edge of the upper cover 2. It can be formed by stamping and then riveting, converting the elastic potential energy of the torsion spring 24 into the opening torque of the upper cover 2. The torsion spring 24 is a helical elastic element wound around the hinge shaft 17. It can be made of spring steel wire wound with both ends bent to form connecting arms, releasing pre-stored elastic potential energy to drive the upper cover 2 to automatically spring up when the latch is unlocked.

[0059] Specifically, when the locking structure releases its constraint on the upper cover 2, the pre-tensioned torsion spring 24 acts on the support frame 16 and the rotating arm 23 respectively through its two connecting arms, generating a torque that causes the rotating arm 23 to rotate around the hinge axis 17 in the opening direction. This torque is transmitted to the entire upper cover through the rotating arm 23, pushing the upper cover 2 to flip upward around the hinge axis 17, forcing the upper baking tray 21 to separate from the lower baking tray 11.

[0060] The above description is only a preferred embodiment of the present utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. A smart hot press sandwich maker, comprising a main body (1) and a top cover (2), wherein the main body (1) is provided with a lower baking tray (11), the top cover (2) is provided with an upper baking tray (21), and the top cover (2) is connected to the main body (1) by an elastic hinge; characterized in that, The main body (1) is provided with a locking structure, which is connected to the upper cover (2) to lock the upper cover (2) onto the main body (1), thereby pairing the upper baking pan (21) and the lower baking pan (11) to form a grilling cavity, which is used to accommodate the sandwich (5); the lower baking pan (11) is provided with an elastic element, and when the upper cover (2) and the main body (1) are closed, the upper baking pan (21) presses the sandwich (5) to make the elastic element fit against the lower baking pan (11). When the latch structure is unlocked, the top cover (2) opens under the action of the elastic hinge, and the elastic element bounces up to make the sandwich (5) detach from the lower baking tray (11); The main body (1) is equipped with a controller (12), which is connected to the lower baking pan (11), the upper baking pan (21) and the locking structure via a circuit.

2. The intelligent hot-press sandwich machine according to claim 1, characterized in that, The elastic element includes a lifting spring (3), and several lifting springs (3) are provided on both sides of the lower baking pan (11); the first end of the lifting spring (3) is located above the lower baking pan (11), and the second end of the lifting spring (3) is connected to the main body (1).

3. The intelligent hot-press sandwich machine according to claim 2, characterized in that, The lower baking pan (11) is provided with several clearance grooves (13), and the lifting spring (3) is paired with the clearance groove (13) one by one; when the upper cover (2) and the main body (1) are closed, the upper baking pan (21) presses down the lifting spring (3), so that the lifting spring (3) passes through the clearance groove (13) and the first end of the lifting spring (3) is attached to the lower baking pan (11); when the upper cover (2) is opened, the lifting spring (3) pops out of the clearance groove (13), so that the first end of the lifting spring (3) is located above the lower baking pan (11).

4. The intelligent hot-press sandwich machine according to claim 3, characterized in that, The lower baking pan (11) includes a base (110) and a rim (111) located around the base. The height of the rim (111) is higher than the height of the base (110). The clearance groove (13) is formed on the rim (111), and the bottom of the clearance groove (13) is equal to the bottom of the base (110).

5. The intelligent hot-press sandwich machine according to claim 4, characterized in that, The main body (1) is provided with hinge seats (14) on both sides, and the second end of the lifting spring (3) is connected to the hinge seat (14).

6. The intelligent hot-press sandwich machine according to claim 1, characterized in that, The locking structure includes a lock box bracket (4), a lock hook (41), and a lock plate (22). The lock box bracket (4) is fixedly installed inside the main body (1). A lock groove (15) is provided on the front edge surface of the main body (1). The lock hook (41) is connected to the lock box bracket (4) through a transverse rotating shaft (42). The lock groove (15) is provided on the front edge surface of the main body (1). A first hook head (43) is provided on the first end of the lock hook (41). The first hook head (43) can pass through the lock groove (15) and thus extend out of the front edge surface of the main body (1). The lock plate (22) is located on the front edge of the upper cover (2). The first hook head (43) can snap onto the lock plate (22) so that the upper cover (2) is closed on the main body (1).

7. The intelligent hot-press sandwich machine according to claim 6, characterized in that, The upper end of the locking hook (41) is also provided with a second hook head (44). The first hook head (43) and the second hook head (44) are arranged at intervals. The second hook head (44) can pass through the locking groove (15) and thus extend out of the front edge of the main body (1). The second hook head (44) can snap onto the locking piece (22) so that the upper cover (2) covers the main body (1).

8. The intelligent hot-press sandwich machine according to claim 7, characterized in that, The lock box bracket (4) is provided with a return spring (45), which contacts the second end of the lock hook (41), so that the first hook (43) and the second hook (44) always tend to pass through the lock groove (15) and extend out of the front edge of the main body (1); the lock box bracket (4) is provided with a transmission link (46), which is rotatably connected to the lock box bracket (4) through a vertical rotation shaft (47), and the first end of the transmission link (46) contacts the second end of the lock hook (41); the main body (1) is provided with a manual switch (18), which is paired with the second end of the transmission link (46).

9. The intelligent hot-press sandwich machine according to claim 8, characterized in that, The lock box bracket (4) is also provided with an electromagnetic driver (48). The actuating end of the electromagnetic driver (48) is paired with the second end of the lock hook (41). The controller (12) is connected to the electromagnetic driver (48) through a line.

10. The intelligent hot-press sandwich machine according to claim 1, characterized in that, The elastic hinge includes a support frame (16) and a hinge shaft (17). The support frame (16) is located on the rear side of the lower baking pan (11) and fixedly mounted on the main body (1). The rear edge of the upper cover (2) is provided with a rotating arm (23). The rotating arm (23) is connected to the support frame (16) through the hinge shaft (17). The hinge shaft (17) is provided with a torsion spring (24). The two ends of the torsion spring (24) are respectively connected to the support frame (16) and the rotating arm (23).

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