Baking tray lifting mechanism of small oven

Abstract

A baking tray lifting mechanism of a small oven comprises an oven frame, a lifting mechanism and a locking mechanism. The furnace frame comprises a bottom plate, supporting legs and an inner side plate. The lifting mechanism is arranged on the outer side of the baking area and comprises a fixed rotating shaft and a rotating assembly. Each rotating assembly comprises a rotating rod, a connecting rod, a driven rod, a tray fixing block, a fixed pulley, a hook and a lifting spring. Compared with the prior art, by arranging the fixed pulley, the lifting spring is parallel to the plane where the rotating rod is located, so that the requirement for the stretching space of the spring is met, meanwhile, the occupied space is reduced, the layout of the rotating assembly is optimized, the size of the furnace body is more compact, and the service life of the furnace body is prolonged. And the auxiliary force of the spring on the baking tray can be realized by using a smaller equipment volume, so that the requirement of customers on the miniaturization of the baking oven is met. And the supporting legs are arranged, and the height of any supporting leg is adjusted through a bolt and a nut, so that the oven is suitable for different environments.

Description

Technical Field

[0001] The utility model relates to the technical field of cooking appliances, and particularly relates to a baking tray lifting mechanism for a miniaturized oven. Background Art

[0002] An infrared burner is manufactured by utilizing these characteristics of infrared rays. The infrared burner has an infrared radiation plate made of special refractory materials. The gas pipeline inside the infrared burner is connected to an external gas supply device. When the flame burns, it absorbs the heat energy of the flame and converts it into infrared rays and radiates them outward. Currently, infrared burners are also used for processing steak during baking.

[0003] For example, an oven with a lifting baking tray disclosed in the authorized Chinese utility model CN202322562350.4 of the applicant includes a furnace frame, a lifting mechanism, a locking mechanism, and a heat source. The furnace frame is the main structure of the oven, including an equipment frame, side plates, a baking area, and a baking tray. The lifting mechanism includes a fixed rotating shaft and a rotating component. Each rotating component includes a rotating rod, a connecting rod, a driven rod, a tray fixing block, and a lifting spring. The locking mechanism includes a rotating handle, a handle moving port, a limit bayonet, and a limit block. The limit block is a movable block arranged on the rotating handle, including a sliding block, a pin, a guide rod, and a limit spring.

[0004] Although by setting the lifting mechanism and utilizing the stability of the parallelogram structure to push the baking tray to lift according to the lever, it can be more labor-saving and the baking tray can be lifted freely. However, due to the use of a spring structure for assisting the lifting of the tray, enough space needs to be reserved inside the box for the spring to stretch, resulting in a larger volume of the oven, which is suitable for commercial use and cannot meet the needs of users for household and miniaturized products, and is not convenient for outdoor use. Summary of the Utility Model

[0005] In view of this, the utility model provides a baking tray lifting mechanism for a miniaturized oven to solve the above technical problems.

[0006] A baking tray lifting mechanism for a miniaturized oven, which includes a furnace frame, a lifting mechanism disposed on the furnace frame, and a locking mechanism disposed on the furnace frame. The furnace frame includes a bottom plate, a plurality of feet disposed on the bottom plate, a plurality of inner side plates disposed on the bottom plate, a plurality of outer side plates spaced apart from the inner side plates, and a baking area disposed on the bottom plate. The feet are disposed on one side of the bottom plate away from the baking area, and screw structures for facilitating height adjustment are disposed on the feet. The lifting mechanism is disposed outside the baking area and includes a fixed rotating shaft disposed on the inner side plate and two rotating components respectively disposed at both ends of the fixed rotating shaft. The rotating components are located outside the baking area and are respectively disposed on both sides of the baking tray perpendicular to the insertion direction of the baking tray. Each rotating component includes a rotating rod connected to the fixed rotating shaft, a connecting rod connected to the rotating rod, a driven rod connected to the connecting rod, a tray fixing block disposed on the connecting rod, a fixed pulley disposed on one side of the rotating rod, a hook disposed at the free end of the rotating rod, and a lifting spring disposed on the bottom plate. The fixed pulley is fixed on the inner side plate and is located on one side of the inner side plate close to the outer side plate. The center point of the fixed pulley and the hook are on the same straight line perpendicular to the ground and on the straight line in the stretching direction of the lifting spring. The hook is fixed on the free end of the rotating rod and is located at the end connected to the fixed rotating shaft. One end of the lifting spring is connected to a threaded rod fixed on the bottom plate, and the other end is connected to the hook. The stretching direction of the lifting spring is parallel to the bottom plate, the inner side plate, and the outer side plate at the same time.

[0007] Further, the furnace frame further includes a baking tray disposed in the baking area.

[0008] Further, the fixed rotating shaft is disposed on the inner side plate and is located on one side of the inner side plate away from the baking tray. It is a rotation structure with a fixed position and is a rotating shaft that rotates circumferentially along the axis.

[0009] Further, the rotating rod is connected to the end of the fixed rotating shaft and is perpendicular to the axis of the fixed rotating shaft. The connecting rod is connected to the rotating rod and is located at the other end away from the connection between the rotating rod and the fixed rotating shaft. The connection between the connecting rod and the rotating rod is a movable connection. The connecting rod can rotate around the connection point as the rotation center, and the rotation plane of the connecting rod and the rotation plane of the rotating rod are the same plane.

[0010] Further, the follower rod is arranged in parallel with the rotating rod. One end of the follower rod is arranged on the inner side plate, and the connection point and the fixed rotating shaft are on the same straight line perpendicular to the ground; the other end is connected to the connecting rod, and both ends are rotatably connected.

[0011] Further, the tray fixing block is an L-shaped structure, and both sides are respectively fixed on the connecting rod and the bottom of the baking tray through fasteners.

[0012] Further, the locking mechanism includes a rotating handle arranged on the rotating rod, a handle moving port arranged on the side wall of the frame, a limit bayonet arranged at the inner wall of the baking area, and a limit block arranged on the rotating handle.

[0013] Further, the limit block is a movable block arranged on the rotating handle, including a sliding block, a pin arranged on the sliding block, a guide rod arranged on the sliding block, and a limit spring sleeved on the guide rod.

[0014] Further, the baking tray lifting mechanism of the miniaturized oven further includes a heat source arranged on the oven frame, and the heat source is arranged at the top of the baking area.

[0015] Compared with the prior art, the baking tray lifting mechanism of the miniaturized oven provided by the present invention makes the lifting spring parallel to the plane where the rotating rod is located by arranging the fixed pulley, so as to reduce the occupied space while meeting the stretching space of the spring, optimize the layout of the rotating assembly, make the volume of the oven body more compact, and realize the auxiliary force of the spring on the baking tray with a smaller equipment volume, meeting the customer's demand for the miniaturization of the oven. And by arranging the feet, the height of any one of the feet is adjusted by bolts and nuts, so that the oven is suitable for different environments, such as rough outdoors, etc., making the product more applicable. Description of the Drawings

[0016] Figure 1 It is an assembly schematic diagram of a baking tray lifting mechanism of a miniaturized oven provided by the present invention.

[0017] Figure 2 is Figure 1 The assembly schematic diagram of the lifting mechanism 20 of the baking tray lifting mechanism of the miniaturized oven.

[0018] Figure 3 is Figure 1 Partial structural schematic diagram of the baking tray lifting mechanism of the miniaturized oven in the top view direction. Detailed Embodiments

[0019] The following further elaborates on the specific embodiments of the present utility model. It should be understood that the description of the embodiments of the present utility model herein does not limit the protection scope of the present utility model.

[0020] As Figures 1 to 3 shown, it is a schematic structural diagram of the baking tray lifting mechanism of the miniaturized oven provided by the present utility model. The baking tray lifting mechanism of the miniaturized oven includes a furnace frame 10, a lifting mechanism 20 disposed on the furnace frame 10, a locking mechanism 30 disposed on the furnace frame 10, and a heat source 40 disposed on the furnace frame 10. It can be envisioned that the baking tray lifting mechanism of the miniaturized oven further includes some other functional modules such as a power supply module, a heating module, etc., which are well-known technologies to those skilled in the art and will not be elaborated herein.

[0021] The furnace frame 10 is the main structure of the oven, including a bottom plate 11, a plurality of feet 12 disposed on the bottom plate 11, a plurality of inner side plates 13 disposed on the bottom plate 11, a plurality of outer side plates 14 spaced apart from the inner side plates 13, a baking area 15 disposed on the bottom plate 11, and a baking tray 16 disposed in the baking area 15.

[0022] The bottom plate 11 and the inner side plates 13 enclose each other to form the baking area 15. A grease collecting box may also be disposed on the bottom plate 11 for collecting oil droplets dripping from the furnace. The feet 12 are disposed on a side of the bottom plate 11 away from the baking area 15 to support the furnace frame 10. At the same time, screw structures for facilitating height adjustment are provided on the feet 12 to enable the device to adapt to different environments. The outer side plates 14 are spaced apart and parallel to the inner side plates 13 to dispose the lifting mechanism 20 between the inner side plates 13 and the outer side plates 14. A plurality of heat dissipation holes are provided on the outer side plates 14, and the name, number of the product or the name and trademark of the manufacturing company can be engraved on the surface. The baking area 15 is surrounded by the inner side plates 13 on three sides to bake the food placed in the baking area 15 through the heating action of the heat source 40. The baking tray 16 is disposed in the baking area 15 and is horizontal with the ground for placing the food to be baked.

[0023] The lifting mechanism 20 is disposed outside the baking area 15 and includes a fixed rotating shaft 21 disposed on the inner side plate 13, and two rotating components 22 respectively disposed at both ends of the fixed rotating shaft 21.

[0024] The fixed rotating shaft 21 is arranged on the inner side plate 13 and is located on the side of the inner side plate 13 away from the baking tray 16. It is a rotation structure with a fixed position, specifically a rotating shaft that rotates circumferentially along the axis, so as to connect and fix the position of the rotating assembly 22 and link the two rotating assemblies 22.

[0025] The rotating assemblies 22 are located outside the baking area 15 and are respectively arranged on both sides of the baking tray 16 perpendicular to the insertion direction of the baking tray 16. Each rotating assembly 22 includes a rotating rod 221 connected to the fixed rotating shaft 21, a connecting rod 222 connected to the rotating rod 221, a driven rod 223 connected to the connecting rod 222, a tray fixing block 224 arranged on the connecting rod 222, a fixed pulley 225 arranged on one side of the rotating rod 221, a hook 226 arranged at the free end of the rotating rod 221, and a lifting spring 227 arranged on the bottom plate 11.

[0026] The rotating rod 221 is connected to the end of the fixed rotating shaft 21 and is perpendicular to the axis of the fixed rotating shaft 21, so that the rotating rod 221 can rotate around the central axis of the fixed rotating shaft 21.

[0027] The connecting rod 222 is connected to the rotating rod 221 and is located at the other end away from the connection between the rotating rod 221 and the fixed rotating shaft 21. The connection between the connecting rod 222 and the rotating rod 221 is a movable connection. The connecting rod 222 can rotate around the connection point, and the rotation plane of the connecting rod 222 and the rotation plane of the rotating rod 221 are the same plane. The driven rod 223 is arranged parallel to the rotating rod 221.

[0028] One end of the driven rod 223 is arranged on the inner side plate 13, and the connection point and the fixed rotating shaft 21 are on the same straight line perpendicular to the ground; the other end is connected to the connecting rod 222, and both ends are rotationally connected, so that the driven rod 223 can rotate synchronously with the rotation of the rotating rod 221 and the connecting rod 222. According to the characteristics that the opposite sides of a parallelogram are parallel and equal, the connecting rod 222 can be kept perpendicular to the ground plane during the rotation process, so that the baking tray 16 can be kept horizontal during the lifting process.

[0029] The tray fixing block 224 is an L-shaped structure, and the two sides are respectively fixed on the connecting rod 222 and the bottom of the baking tray 16 through fasteners, so that when the connecting rod 222 moves up and down in the vertical direction, the baking tray 16 is driven to move through the tray fixing block 224.

[0030] The fixed pulley 225 is fixed on the inner side plate 13 and is located on one side of the inner side plate 13 close to the outer side plate 14. By utilizing the characteristic that a fixed pulley can change the direction of force, a steel wire is used to connect the hook 226 and the lifting spring 227. The center point of the fixed pulley 225 and the hook 226 are on the same straight line perpendicular to the ground and on the straight line in the stretching direction of the lifting spring 227, so as to connect the hook 226 and the lifting spring 227 through a steel wire (not shown in the figure).

[0031] The hook 226 is fixed on the free end of the rotating rod 221 and is located at one end connected to the fixed rotating shaft 21, so as to facilitate the arrangement of a steel wire connected to the lifting spring 227.

[0032] One end of the lifting spring 227 is connected to a threaded rod fixed on the bottom plate 11, and the other end is connected to the hook 226. By the lever principle, the lifting spring 227 pulls the rotating rod 211 under the action of elastic force, so as to play an auxiliary force role during the lifting and lowering process. The stretching direction of the lifting spring 227 is parallel to the bottom plate 11, the inner side plate 13 and the outer side plate 14 at the same time, so as to arrange the lifting spring 227 on one side of the rotating rod 221 and the driven rod 223, effectively reducing the installation space, optimizing the structural layout of the rotating assembly 22, facilitating the reduction of the overall volume of the oven, and improving the portability of the product.

[0033] The locking mechanism 30 is located outside the baking area 15 and includes a rotating handle 31 arranged on the rotating rod 211, a handle moving port 32 arranged on the side wall of the frame, a limit bayonet 33 arranged at the inner wall of the baking area 15, and a limit block 34 arranged on the rotating handle 31.

[0034] The rotating handle 31 is connected to the end of the rotating rod 221 far from the fixed rotating shaft 21 and extends along the axial direction of the rotating rod 221 towards the direction away from the fixed rotating shaft 21 to the outside of the baking area 15. By holding and pushing the rotating handle 31, the rotation of the rotating rod 221 is driven, so that the tray fixing block 224 pushes the baking tray 16 to move through the transmission of the connecting rod 222. A pressing top plate 311 is also arranged on the rotating handle 31, which is used to cooperate with the limit block 34 to work. The specific structure will be described in combination with the limit block 34 below, so it will not be elaborated here.

[0035] The handle moving opening 32 is formed on the side wall of the frame and is located at the opening side of the baking area 15. A scale is provided at the handle moving opening 32 to facilitate pushing the handle and accurately controlling the height of the baking tray 16 lifted or lowered after the handle is pushed.

[0036] The limit bayonet 33 is fixed on the inner side plate 13 and is located near the handle moving opening 32. The main body of the limit bayonet 33 is an arc-shaped strip structure, and a plurality of toothed card slots are provided on the side away from the handle moving opening 32 for cooperation with the limit block 34 to fix the position after the rotating handle 31 completes rotation.

[0037] The limit block 34 is a movable block provided on the rotating handle 31, including a slider 341, a pin 342 provided on the slider 341, a guide rod 343 provided on the slider 341, and a limit spring 344 sleeved on the guide rod 343. The slider 341 is movably arranged on the rotating handle 31 and can slide relative to the rotating handle 31. Extension plates 345 bent at 90° are provided at both ends of the slider 341. One end faces the rotating rod 221 and abuts against the rotating handle 31 through the limit spring 344, and the other end extends to the holding end of the rotating handle 31, so that when holding the rotating handle 31, the movement of the pin 342 can be driven by pressing the slider 341. The pin 342 is provided on the slider 341 and is engaged with the teeth of the limit bayonet 33. By inserting the pin 342 into the limit bayonet 33, the locking of the lifting mechanism 20 is realized. The guide rod 343 is provided on the extension plate 345 of the slider 341 close to the rotating rod 221 and passes through the abutting plate 311 for sleeving the limit spring 344 to guide the limit spring 344. The limit spring 344 is arranged between the slider 342 and the rotating handle 31, with one end abutting against the extension plate 345 and the other end abutting against the abutting plate 311 to push and insert the pin 342 into the limit bayonet 33 without external force. It can be imagined that when it is necessary to push the rotating handle 31, only need to press the slider 341 to drive the pin 342 stuck in the limit bayonet 33 to slide and disengage from the limit bayonet 33 to realize unlocking; when the rotation of the rotating handle 31 is completed, stop pressing the slider 342, and the slider 342 resets under the elastic action of the limit spring 344 and inserts the pin 342 into the limit bayonet 33 to realize locking.

[0038] The heat source 40 is arranged at the top of the baking area 15 and can be a heating device using infrared technology, which is a common technology widely applied in the technical field of cooking appliances and should be well-known to those skilled in the art. Therefore, no detailed description will be given here one by one.

[0039] During use, the ingredients just placed on the baking tray 16 require a relatively high temperature, so they need to be closer to the heating module located at the top of the baking area 15. At this time, press the slider 341 to unlock and lift the rotating handle 31, driving the rotating rod 221 to rotate upward, so that the connecting rod 222 and the tray fixing block 224 drive the baking tray 16 to rise following the rotation of the rotating rod 221. In addition, due to the self-weight of the baking tray 16 plus the weight of the ingredients, a relatively large force is required to push. Therefore, by setting the lifting spring 227 to provide assistance, it can be completed with a smaller force when lifting the baking tray 16. As the use time of the oven progresses and the baking tray 16 needs to be lowered, press the slider 341 to unlock and lower the handle to lower the baking tray.

[0040] Compared with the prior art, the baking tray lifting mechanism of the miniaturized oven provided by the present invention makes the lifting spring 227 parallel to the plane where the rotating rod 221 is located by setting the fixed pulley 225, so as to reduce the occupied space while meeting the stretching space of the spring, optimize the layout of the rotating assembly 22, make the volume of the furnace body more compact, and realize the auxiliary force of the spring on the baking tray 16 with a smaller equipment volume, meeting the customer's demand for the miniaturization of the oven. And by setting the feet 12, the height of any one of the feet 12 can be adjusted by using bolts and nuts, so that the oven is suitable for different environments, such as rough outdoors, etc., making the applicability of the product wider.

[0041] The above is only the preferred embodiment of the present invention and is not used to limit the protection scope of the present invention. Any modification, equivalent replacement or improvement within the spirit of the present invention is covered by the claims of the present invention.

Claims

1. A baking tray lifting mechanism for a miniaturized oven, characterized in that: The baking tray lifting mechanism of the miniaturized baking oven includes a furnace frame, a lifting mechanism arranged on the furnace frame, and a locking mechanism arranged on the furnace frame. The furnace frame includes a bottom plate, a plurality of legs arranged on the bottom plate, a plurality of inner plates arranged on the bottom plate, a plurality of outer plates arranged at intervals from the inner plates, and a baking area arranged on the bottom plate. The legs are arranged on a side of the bottom plate away from the baking area, and a screw structure for facilitating height adjustment is arranged on the legs. The lifting mechanism is arranged on the outside of the baking area and includes a fixed rotating shaft arranged on the inner plate, and two rotating components respectively arranged at both ends of the fixed rotating shaft. The rotating components are located outside the baking area and are respectively arranged on both sides of the baking tray perpendicular to the insertion direction of the baking tray. Each of the rotating components includes a screw connected to the bottom plate. A rotating rod on a fixed rotating shaft, a connecting rod connected to the rotating rod, a driven rod connected to the connecting rod, a tray fixing block arranged on the connecting rod, a fixed pulley arranged on one side of the rotating rod, a hook arranged at the free end of the rotating rod, and a lifting spring arranged on the bottom plate, the fixed pulley is fixed to the inner plate and is located on the side of the inner plate close to the outer plate, the center point of the fixed pulley and the hook are on the same straight line perpendicular to the ground, and are located on a straight line in the stretching direction of the lifting spring, the hook is fixed to the free end of the rotating rod and is located at one end connected to the fixed rotating shaft, one end of the lifting spring is connected to a threaded rod fixed to the bottom plate, and the other end is connected to the hook, and the stretching direction of the lifting spring is parallel to the bottom plate, the inner plate and the outer plate at the same time.

2. The baking tray lifting mechanism of the miniaturized baking oven according to claim 1, characterized in that: The oven rack further comprises a baking tray arranged in the baking area.

3. The baking tray lifting mechanism of the miniaturized baking oven according to claim 2, characterized in that: The fixed rotating shaft is arranged on the inner plate and is located at a side of the inner plate away from the baking tray. It is a rotating structure with a fixed position and a rotating shaft that rotates circumferentially along the axis.

4. The baking tray lifting mechanism of the miniaturized baking oven according to claim 1, characterized in that: The rotating rod is connected to the end of the fixed rotating shaft and is arranged perpendicular to the axis of the fixed rotating shaft. The connecting rod is connected to the rotating rod and is located at the other end away from the connection between the rotating rod and the fixed rotating shaft. The connection between the connecting rod and the rotating rod is a movable connection. The connecting rod can rotate with the connection point as the rotation center, and the rotation plane of the connecting rod is the same plane as the rotation plane of the rotating rod.

5. The baking tray lifting mechanism of the miniaturized baking oven according to claim 1, characterized in that: The driven rod is arranged in parallel with the rotating rod, one end of the driven rod is arranged on the inner plate, and the connection point is on the same straight line perpendicular to the ground as the fixed rotating shaft; the other end is connected to the connecting rod, and both ends are rotatingly connected.

6. The baking tray lifting mechanism of the miniaturized baking oven according to claim 2, characterized in that: The tray fixing block is an L-shaped structure, and two sides thereof are respectively fixed to the connecting rod and the bottom of the baking tray by fasteners.

7. The baking tray lifting mechanism of the miniaturized baking oven according to claim 2, characterized in that: The locking mechanism includes a rotating handle arranged on the rotating rod, a handle movable opening arranged on the side wall of the frame, a limiting clamping opening arranged on the inner wall of the baking area, and a limiting clamping block arranged on the rotating handle.

8. The baking tray lifting mechanism of the miniaturized baking oven according to claim 7, characterized in that: The limit block is a movable block arranged on the rotating handle, comprising a slider, a latch arranged on the slider, a guide rod arranged on the slider, and a limit spring sleeved on the guide rod.

9. The baking tray lifting mechanism of the miniaturized baking oven according to claim 2, characterized in that: The baking tray lifting mechanism of the miniaturized baking oven further comprises a heat source arranged on the oven rack, and the heat source is arranged on the top of the baking area.

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