Movable control box electric oven structure
By employing a grooved and convex rib support structure in the electric oven, combined with the water tray's gravity tilt and automatic power-off switching, the problems of reliability in preventing detachment and accidental power-on without a water tray are solved, achieving stable connection and safe power-off, thus improving the safety and convenience of outdoor use.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- LINKCO ELECTRICAL LNDUSTRIES LTD
- Filing Date
- 2025-08-21
- Publication Date
- 2026-08-04
AI Technical Summary
Existing modular electric ovens have insufficient reliability in preventing them from falling off when used outdoors, and there is a risk of accidental power-on when the water pan is empty. The existing design increases the number of parts and has insufficient tilt sensitivity, resulting in safety hazards and inconvenience in use.
The structure uses movable plug-in grooves and ribs to form a fulcrum. Combined with the gravity tilt of the water pan and the automatic power on/off of the switch, it achieves the synergistic function of preventing detachment and power off when there is no water, reducing the number of parts and simplifying assembly.
It achieves stable connection and automatic power-off when used outdoors, avoiding the dangers of electric arc and heat radiation, and improving safety and ease of use.
Smart Images
Figure CN224584633U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of electric ovens, specifically a portable control box electric oven structure. Background Technology
[0002] In recent years, portable outdoor electric grills have gradually evolved towards a "detachable" structure. A typical design breaks the entire unit down into five modules: base, water tray, control box, heating element, and grill rack, to meet the needs of rapid assembly, storage, and portability outdoors. However, existing modular designs still have significant shortcomings in two key safety aspects: Insufficient reliability of anti-detachment: The control box and base are generally connected by simple slots or single-sided buckles. In outdoor scenarios, the probability of the power cord being dragged, bumped, or accidentally kicked, causing the connector to detach instantly and generate an electric arc or power outage, is much higher than indoors. This not only shortens the product lifespan but also brings the risk of electric shock.
[0003] Risk of accidental power-on without a water tray: The water tray not only collects grease but also serves to block downward heat radiation from the heating element and reduce the surface temperature of the base. Existing solutions typically place a microswitch inside the base, which is triggered by the insertion of the water tray. However, this structure relies on the user to correctly place the water tray. If the user neglects to install it, the heating element will continue to heat without any obstruction, and the heat radiation may ignite tablecloths and other hazards.
[0004] Current technology attempts to combine two mechanisms: "horizontal anti-detachment" and "power-off when there is no water". A long slide is added to the base to resist cable tension, and the control box tilts around the fulcrum after losing the support of the water tray, triggering the power-off switch. However, since the two mechanisms are arranged independently, the number of parts increases exponentially. At the same time, the excessive length of the slide reduces the tilt sensitivity, resulting in a delayed power-off when there is no water tray.
[0005] Therefore, this utility model proposes a portable control box electric oven structure with fewer parts, simpler assembly, and the ability to simultaneously perform the functions of preventing detachment and power-off when there is no water. Utility Model Content
[0006] To address the aforementioned problems in the existing technology, this utility model provides a portable control box electric oven structure.
[0007] The objective of this utility model can be achieved through the following technical solutions: A portable control box electric oven structure includes a base, a water tray, a heating element, and a switch. The heating element has a groove, and the base has a rib. The groove and the rib are movably connected and form a fulcrum. The heating element is divided into a first side and a second side with the fulcrum as the boundary. The weight of the first side is less than the weight of the second side. One end of the switch is located on the base, and the other end is located on the heating element. When the water tray is detachably fitted onto the base, the water tray abuts against the first side, thereby keeping the heating element horizontal and stable, the switch is closed, and the circuit is connected; when the water tray is not placed, the heating element tilts around the fulcrum to the second side under the action of gravity, the switch is opened, and the circuit is cut off.
[0008] Preferably, the heating element includes a movable control box and a heating tube. The heating tube is connected to internal electrical components on the other side of the movable control box. The first side of the heating element is the movable control box, and the second side is the heating tube.
[0009] Preferably, the horizontal distance between the first center of gravity and the fulcrum is less than the horizontal distance between the second center of gravity and the fulcrum.
[0010] Preferably, the upper part of the rib is further divided into a first inclined surface, a second inclined surface, and a plane, wherein the second inclined surface forms a perpendicular plane to the plane, and when the groove and the rib are inserted, the groove of the movable control box contacts the plane to form a fulcrum.
[0011] Preferably, a triangular blank area is formed between the first inclined surface and the groove. This triangular blank area does not provide a vertical limit for the movable control box. When the water tray is removed, the protrusion at the edge of the water tray does not limit the rib plate. The overall torque of the heating tube is greater than that of the movable control box, thereby causing the heating tube to tilt toward the water tray.
[0012] Preferably, the water tray has a square frame structure with a water storage trough inside. One side of the water tray also has an inner notch that extends downwards. The water tray extends outwards to form an edge protrusion, which cooperates with the base to achieve horizontal positioning.
[0013] Preferably, the second inclined surface forms a perpendicular surface with the plane. When the groove and the rib are inserted, one side of the groove is in contact with the vertical surface, and the other side is in contact with the protrusion on the edge of the water tray, so as to prevent the movable control box from detaching from the base.
[0014] Preferably, the switching element is a normally closed insert micro switch, the switch strip of the insert micro switch is disposed on the base, and the switch slot is disposed on the movable control box.
[0015] Preferably, it also includes a temperature probe, which is disposed between the heating tubes to detect the temperature in real time.
[0016] The beneficial effects of this utility model are as follows: 1. By having the switch strip and switch slot aligned on the same axis to form a corresponding plug-in connection, and by using the protrusion on the edge of the water tray to limit the movable control box, the combination of these two features prevents situations where the water tray is not placed or where the base and movable control box are mixed up during use.
[0017] 2. By checking whether the heating element is tilted, the system determines whether a water tray needs to be placed, thus automatically switching the power on and off of the switch and preventing the heating element from continuing to be powered on when there is no water tray, which would generate heat radiation and damage the base.
[0018] 3. The upper part of the rib is further divided into a first inclined surface, a second inclined surface, and a plane. The second inclined surface and the plane form a perpendicular surface. When the groove and the rib are inserted, the movable control box rib plate contacts the plane of the rib to form a fulcrum. At the same time, one side of the rib plate is attached to the vertical surface, and the other side is attached to the edge protrusion of the water tray. This allows the vertical surface and the edge protrusion to simultaneously restrict the function of the rib plate. Attached Figure Description
[0019] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.
[0020] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the disassembled three-dimensional structure of this utility model; Figure 3 This is a partial three-dimensional structural schematic diagram of the present invention; Figure 4 This is an enlarged three-dimensional structural diagram of A of this utility model; Figure 5 This is an enlarged three-dimensional structural diagram of utility model B. Figure 6 This is a schematic diagram of the connection between the protruding rib and the groove of this utility model; Legend: 1. Base; 11. Rib; 12. Switch bar; 2. Water tray; 3. Removable control box; 31. Groove; 32. Switch slot; 4. Heating element; 5. Temperature probe; 6. Wire end; 7. Baking tray. Detailed Implementation
[0021] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.
[0022] The current technology attempts to combine the "horizontal anti-detachment" and "waterless power-off" mechanisms: a long slide is added to the base 1 to resist the cable tension, and the control box tilts around the fulcrum after losing the support of the water tray 2, triggering the power-off switch; however, since the two mechanisms are arranged independently, the number of parts increases exponentially, and the excessive length of the slide weakens the tilt sensitivity, resulting in a delayed power-off when there is no water tray 2.
[0023] In this regard, refer to Figures 1-6As shown, this embodiment provides a portable control box 3 electric oven structure to solve the above problems. It includes a base 1, a water tray 2, a heating element, and a switch. The heating element has a groove 31, and the base 1 has a rib 11. The groove 31 and the rib 11 can be movably inserted and form a fulcrum. The heating element is divided into a first side and a second side with the fulcrum as the boundary. The weight of the first side is less than the weight of the second side. One end of the switch is located on the base 1, and the other end is located on the heating element. When the water tray 2 is detachably sleeved on the base 1, the water tray 2 abuts against the first side, thereby keeping the heating element horizontal and stable. The switch is closed, and the circuit is connected. When the water tray 2 is not placed, the heating element tilts towards the second side around the fulcrum under the action of gravity. The switch is disconnected, and the circuit is cut off.
[0024] For details, please refer to Figure 2 As shown, the base 1 is a rectangular frame with four corners as support points, and transitions to each side wall through arcs. The interior of the base 1 forms a stepped square groove from bottom to top. The upper surface of the stepped square groove forms a support surface for supporting the water tray 2. A snap-fit groove is provided in the middle of one side of the base 1. A rib is provided horizontally on the bottom surface of the snap-fit groove near the center of the base 1. The rib is used to improve the overall rigidity of the base 1. Two symmetrically arranged ribs 11 are provided on the bottom surface of the snap-fit groove. The rear side of the rib 11 is located on the side of the rib away from the center of the base 1.
[0025] Specifically, it also includes a baking tray 7, and the base 1 has four slots at the top. The baking tray 7 is attached to the four slots at the top of the base 1 for placing baked goods.
[0026] Specifically, the water tray 2 is a square frame with a water storage groove inside. The upper surface of the water tray 2 has an inner notch on one side of the base 1's locking groove. The upper surface of the water tray 2 extends outward to form an edge protrusion. The lower surface of the edge protrusion cooperates with the support surface to achieve horizontal positioning. At the same time, the edge protrusion is also convenient for the user to hold and take the water tray 2.
[0027] Specifically, the heating element comprises a movable control box 3, a heating tube 4, and a temperature probe 5. The first side of the heating element is the movable control box 3, and the second side consists of the heating tube 4 and the temperature probe 5. The movable control box 3 is existing technology, shaped like an isosceles trapezoid, with a power adjustment handle on its inclined surface. It integrates a control circuit. Two grooves 31 are formed on the bottom surface of the movable control box 3, which can be movably inserted into the protruding ribs 11 of the base 1, forming a horizontal fulcrum. The other side of the movable control box 3 houses the heating tube 4 and the temperature probe 5, which are connected to the internal electrical components. The temperature probe 5 is located between the heating tubes 4 to detect the temperature in real time. The heating tube 4 is referenced... Figure 2 The heating element is located at a certain distance from the inner notch and has multiple sets of bends. When powered on, it can generate heat radiation evenly to bake the heating element evenly. At the same time, the overall horizontal area and weight of the heating element 4 are greater than those of the movable control box 3, so that the heating element forms a torque configuration of "light on the left and heavy on the right" with the fulcrum as the boundary.
[0028] Specifically, the movable control box 3 is also provided with a wire head 6, which is fixed to one side of the movable control box 3, and the electrical components inside the movable control box 3 are powered through the wire head 6.
[0029] Specifically, the switching component is a plug-in type normally closed micro switch, including a switch bar 12 and a switch slot 32. The switch bar 12 has a COM (common terminal) and the switch slot 32 has an NC (normally closed terminal). The switch bar 12 is fixed to the base 1, and the switch slot 32 is located in the movable control box 3. The two are located on the same axis, so they are matched with each other to avoid the situation of mixing the base 1 and the movable control box. When the movable control box 3 is inserted into the slot of the base 1, the switch bar 12 is directly inserted into the switch slot 32 of the base 1. COM and NC remain closed and conductive, and the circuit is connected. When COM and NC are immediately disconnected, the circuit is cut off.
[0030] Additionally, it should be noted in detail that the groove 31 and the protruding rib 11 of the base 1 can be movably connected to form a horizontal fulcrum. Please refer to [reference needed] for details. Figure 6 As shown, the upper part of the rib 11 is further divided into a first inclined surface, a second inclined surface, and a plane. The second inclined surface forms a perpendicular plane with the plane. When the groove 31 and the rib 11 are inserted, the groove 31 of the movable control box 3 contacts the plane of the rib 11 to form a fulcrum. At the same time, one side of the groove 31 is in contact with the vertical surface, and the other side is in contact with the edge protrusion of the water tray 2. This allows the vertical surface and the edge protrusion to simultaneously restrict the function of the groove 31. Restricting the groove 31 is equivalent to restricting the movable control box 3. Therefore, the insertion of the rib 11 of the base 1 into the groove 31 of the movable control box 3 forms a limit, thereby preventing the movable control box 3 from detaching from the base 1. This can prevent the heating element from detaching from the base 1 due to external dragging factors, thus avoiding the heating tube from being damaged. In the event of a power outage, a triangular blank area is formed between the first inclined surface and the groove 31. This triangular blank area does not provide a vertical limit for the movable control box 3. Therefore, when the water tray 2 is removed and its edge protrusion does not limit the rib, the overall torque of the heating tube 4 is greater than that of the movable control box 3. The heating tube 4 tilts towards the water tray 2, causing the movable control box 3 to lift up the switch bar 12 together. The switch bar 12COM (common end) tilts up and disconnects from the switch groove 32NC (normally closed end), thus cutting off the circuit. Therefore, by checking whether the heating tube 4 is tilted, it is possible to determine whether the water tray 2 is placed, thereby achieving automatic power on / off of the switch and preventing the heating tube 4 from continuing to be powered on when there is no water tray 2, which would generate heat radiation and damage the base 1.
[0031] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.
Claims
1. A portable control box electric oven structure, characterized in that: The device includes a base, a water tray, a heating element, and a switch. The heating element has a groove, and the base has a rib. The groove and the rib are movably connected and form a fulcrum. The heating element is divided into a first side and a second side with the fulcrum as the boundary. The weight of the first side is less than the weight of the second side. One end of the switch is located on the base, and the other end is located on the heating element. When the water tray is detachably fitted onto the base, the water tray abuts against the first side, thereby keeping the heating element horizontal and stable, the switch is closed, and the circuit is connected; when the water tray is not placed, the heating element tilts around the fulcrum to the second side under the action of gravity, the switch is opened, and the circuit is cut off.
2. The portable control box electric oven structure according to claim 1, characterized in that: The heating element includes a movable control box and a heating tube. The heating tube is connected to internal electrical components on the other side of the movable control box. The first side of the heating element is the movable control box, and the second side is the heating tube.
3. The portable control box electric oven structure according to claim 1, characterized in that: The horizontal distance between the first center of gravity and the fulcrum is less than the horizontal distance between the second center of gravity and the fulcrum.
4. The portable control box electric oven structure according to claim 2, characterized in that: The upper part of the rib is further divided into a first inclined surface, a second inclined surface, and a plane. The second inclined surface forms a perpendicular plane with the plane. When the groove and the rib are inserted, the groove of the movable control box contacts the plane to form a fulcrum.
5. The portable control box electric oven structure according to claim 4, characterized in that: A triangular blank area is formed between the first inclined surface and the groove. This triangular blank area does not provide vertical restriction for the movable control box. When the water tray is removed, the protrusion on the edge of the water tray does not provide restriction for the rib plate. The overall torque of the heating tube is greater than that of the movable control box, thereby causing the heating tube to tilt toward the water tray.
6. The portable control box electric oven structure according to claim 1, characterized in that: The water tray has a square frame structure with a water storage tank inside. One side of the water tray also has an inner notch that extends downwards. The water tray extends outwards to form an edge protrusion, which cooperates with the base to achieve horizontal positioning.
7. The portable control box electric oven structure according to claim 5, characterized in that: The second inclined surface forms a perpendicular surface with the plane. When the groove and the rib are inserted, one side of the groove is in contact with the vertical surface, and the other side is in contact with the protrusion on the edge of the water tray, so as to prevent the movable control box from falling off the base.
8. The portable control box electric oven structure according to claim 2, characterized in that: The switching element is a normally closed insert micro switch, the switch strip of the insert micro switch is disposed on the base, and the switch slot is disposed on the movable control box.
9. The portable control box electric oven structure according to claim 2, characterized in that: It also includes a temperature probe, which is placed between the heating tubes to detect the temperature in real time.
10. The portable control box electric oven structure according to claim 8, wherein: The switch bar and the switch slot are aligned on the same axis to form a corresponding insertion.