Lifting rod structure for baking tray

By designing a lifting structure with angle adjustment components and traction mechanism in the frying grill, the existing frying grill has solved the complex structure and large size problems, achieving the convenience of one-handed operation and angle adjustment, and improving the use Experience.

CN222357537UActive Publication Date: 2025-01-17宁波爱佳电器有限公司
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Patent Information

Application Number
CN202423032945.X
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-12-10
Publication Date
2025-01-17
Estimated Expiration
2034-12-10

AI Technical Summary

Technical Problem

The lifting bars of existing fryers are complex and large in size, so they cannot be achieved with one-handed operation, especially when you need to turn the lifting bar or put on the baking tray, you need to press the switch or button with one hand and hold the lifting bar with the other hand or On the baking tray, it's very inconvenient.

Method used

A structure including a lifting rod, a baking tray and an angle adjustment assembly is designed, and angle adjustment is achieved using a positioning pin and a special-shaped limiting hole. Through the traction mechanism and elastic member, one hand allows a button to be pressed and rotated at the same time to achieve the Angle adjustment and flip.

Benefits of technology

It realizes flexible angle adjustment and one-hand operation of the baking tray, simplifies the use process, reduces the volume and weight of the equipment, and improves the convenience of operation.

✦ Generated by Eureka AI based on patent content.

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Abstract

The lifting rod structure comprises a lifting rod, a first baking tray and a second baking tray, the lifting rod is connected to the first baking tray and connected to the second baking tray in an overturning mode, an angle adjusting assembly is arranged between the lifting rod and the second baking tray and comprises a positioning pin and a special-shaped limiting hole, and the positioning pin is connected to the lifting rod in a telescopic mode and rotates along with the lifting rod. The special-shaped limiting hole is formed in the second baking tray, the positioning pin extends into the special-shaped limiting hole and is driven by the lifting rod to reciprocate along the special-shaped limiting hole, a first limiting end and a second limiting end are arranged in the special-shaped limiting hole, and when the lifting rod rotates to be in an open state, the positioning pin moves to abut against the first limiting end of the special-shaped limiting hole; and when the positioning pin retracts to be separated from the special-shaped limiting hole, the lifting rod continues to rotate towards the opening direction, so that the positioning pin abuts against the second limiting end. According to the utility model, one hand can press the button and rotate the lifting rod at the same time, namely, one hand can turn over the baking tray 1.
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Description

Technical Field

[0001] The utility model relates to the field of kitchen utensils, in particular to a lifting rod structure for a baking tray. Background Art

[0002] The grill usually comprises a base, an upper shell, and an upper grilling plate and a lower grilling plate respectively embedded in the base and the upper shell. A reversible connection is formed between the base and the upper shell so that the upper and lower grilling plates can be clamped or opened. The upper shell is provided with a lifting rod structure, which serves as a handle for lifting the upper grilling plate by hand and rotating the upper grilling plate. In order to control the rotation angle of the upper grilling plate, grills with controllable rotation angles are currently available on the market. These grills usually form an external structure relative to the upper grilling plate, which is not only complex in structure but also large in size, thereby increasing the overall size and weight of the grill accordingly. Meanwhile, a switch or button for triggering and controlling the rotation is usually located on one side of the lifting rod or the upper grilling plate. When the lifting rod or the upper grilling plate needs to be rotated, one hand needs to press the switch or button and the other hand needs to hold the lifting rod or the upper grilling plate to rotate it. This is very inconvenient when only one hand is free, i.e., the grilling plate cannot be rotated with one hand. Utility Model Content

[0003] The utility model aims to provide a lifting rod structure for a baking tray designed to solve the deficiencies of the above-mentioned technology.

[0004] The cam is configured to move the locking cam and the locking cam of the locking cam into engagement with the locking cam of the locking cam, wherein the locking cam is configured to move the locking cam in an upright position relative to the locking cam of the locking cam. State; the angle adjustment assembly also includes a traction mechanism for controlling the extension and retraction of the positioning pin, the traction mechanism including an elastic member, a traction rope, a slider and a button, the two ends of the lifting rod extend symmetrically to the same side of the two baking trays, the number of the positioning pins is two, which are respectively arranged at the ports at the two ends, the elastic member is installed in the end of the lifting rod and abuts against the positioning pin, so that the positioning pin can be elastically extended and retracted, and the positioning pin is in a normally extended state under the action of the elastic member; the number of the traction rope and the slider is two, the two sliders are slidably connected to the inside of the lifting rod in turn, each slider is connected to the corresponding positioning pin through a traction rope, one end of each traction rope is connected to the tail end of the positioning pin, and the other end is connected to the slider, the button is located between the two sliders and forms a linkage with the sliders, and the two sliders are driven to move relative to each other by pressing the button, and the two sliders pull the positioning pin through the corresponding traction rope, and the positioning pin overcomes the force of the elastic member and shrinks, so that the positioning pin disengages from the special-shaped limiting hole.

[0005] Further optimization, the slider includes a base slidably connected to the lifting rod, the base is provided with a connecting hole for fixing the corresponding end of the traction rope, the base is also provided with a protrusion, the protrusion has a first inclined surface, the end of the first inclined surface facing the button is higher than the end facing the connecting hole, the button is provided with two symmetrically distributed second inclined surfaces, the second inclined surfaces correspond to and match the first inclined surfaces one by one.

[0006] Further optimization is that there are multiple connection holes, which are equidistantly arranged along the sliding direction of the slider.

[0007] Further optimized, the lifting rod is hollow inside, and its inner wall is provided with a plurality of guide protrusions which are distributed at intervals along the length direction of the traction rope and are used to guide the traction rope.

[0008] Further optimized, the traction rope includes a sleeve and a rope body located in the sleeve, the sleeve extends along the distribution direction of the guide protrusion and is guided and limited by the guide protrusion, the rope body passes through the sleeve and its two ends are respectively connected to the positioning pin and the slider.

[0009] Further optimization is that the inner wall of the lifting rod is provided with a plurality of positioning protrusions along the length direction of the slider to form a movable limit for the slider, so that the slider can slide back and forth along the positioning protrusions.

[0010] Preferably, both ends of the lifting rod are rotatably connected to the second baking pan via a connecting seat, and the special-shaped limiting hole is arranged on the connecting seat.

[0011] Preferably, when the angle of the lifting rod together with the baking tray one relative to the baking tray two is rotated from 0° to 110°, the positioning pin always moves in the special-shaped limiting hole; when the lifting rod together with the baking tray one is rotated to 110° relative to the baking tray two, the positioning pin just abuts against the limiting end one, so that a pair of positioning pins at the limiting end form a limit; when the lifting rod together with the baking tray one is rotated to 180° relative to the baking tray two from 110° to 180°, the positioning pin always moves along the limiting end two.

[0012] Further optimized, the elastic member is a conical spring, the top end of which abuts against the positioning pin, and the bottom end abuts against the nearest guide protrusion in the lifting rod.

[0013] The technical effect of the utility model is that a lifting rod is provided on the first baking tray, and the two ends of the lifting rod are rotatably connected to the second baking tray through the connecting seat, so that the first baking tray can be rotated relative to the second baking tray, and an angle adjustment component is provided between the lifting rod and the connecting seat, so that the rotation angle between the lifting rod and the first baking tray and the second baking tray can be adjusted; the angle adjustment component includes a retractable positioning pin arranged at the end of the lifting rod and a special-shaped limiting hole arranged on the connecting seat, when the lifting rod is rotated, the positioning pin extends into the special-shaped limiting hole and moves, and when the lifting rod is rotated to a certain angle, the positioning pin abuts against the limiting end one in the special-shaped limiting hole, so that the lifting rod and The two baking trays are fixed at this angle, that is, the baking tray one is limited after being opened to this angle, and the angle is usually 0 to 110 degrees; when the button is pressed, the button controls the positioning pin to retract, and the positioning pin is separated from the limiting end one, and as the positioning pin continues to rotate with the lifting rod, the positioning pin abuts against the limiting end two, and the lifting rod continues to be rotated, so that the positioning pin moves along the limiting end two until it is rotated to the open state of the baking tray one relative to the baking tray two; the button of the angle adjustment assembly is set at the midpoint of the lifting rod, so that one hand can press the button and rotate the lifting rod at the same time, so that one hand can adjust the rotation of the baking tray one, which is very convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a structural diagram after baking tray 1 and baking tray 2 are closed;

[0015] Figure 2 This is the structural diagram when the angle between baking tray 1 and baking tray 2 is 90°;

[0016] Figure 3 This is the external structure diagram of the lifting rod;

[0017] Figure 4 This is the internal structure diagram of the lifting rod;

[0018] Figure 5 yes Figure 4 Enlarged view of point A in the middle;

[0019] Figure 6 yes Figure 4 Enlarged view of point B in the middle;

[0020] Figure 7 is a structural diagram of the angle adjustment component;

[0021] Figure 8 yes Figure 7 Enlarged view of point C in the middle;

[0022] Fig. 9 It is a structural diagram of the anisotropic limiting holes and locating pins.

[0023] In the figure: 1. lifting rod; 2. baking tray 1; 3. baking tray 2; 4. positioning pin; 5. special-shaped limiting hole; 51. limiting end 1; 52. limiting end 2; 6. elastic member; 7. traction rope; 71. pipe sleeve; 72. rope body; 8. button; 81. second inclined surface; 9. slider; 91. base; 92. connecting hole; 93. protrusion; 94. first inclined surface; 10. guide protrusion; 11. positioning protrusion; 12. connecting seat. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the utility model.

[0025] The utility model comprises a lifting rod 1, a baking tray 2, a connecting seat 12 and a baking tray 3. Figure 1 and 2 As shown, the lifting rod 1 is connected to the baking tray 1 2, and two symmetrically distributed connecting seats 12 are provided on the same side of the baking tray 2 3. The lifting rod 1 is extended along the outer peripheral contour of the baking tray 1 2, and the lifting rod 1 has two ends, such as Figure 3 As shown, the two ends of the lifting rod 1 are rotatably connected to the connecting seat 12 respectively, so that the lifting rod 1 and the baking tray 1 2 can be flipped and connected to the baking tray 2 3 .

[0026] An angle adjustment component is provided between the end of the lifting rod 1 and the second baking tray 3, and the angle adjustment component includes a positioning pin 4 and a special-shaped limiting hole 5. The positioning pin 4 is telescopically connected to the end of the lifting rod 1 and rotates with the lifting rod 1. There are two positioning pins 4, which are respectively arranged at the two ends of the lifting rod 1, and the two positioning pins 4 are symmetrically arranged. The special-shaped limiting hole 5 is arranged on the connecting seat 12. The positioning pin 4 extends into the special-shaped limiting hole 5 and reciprocates along the special-shaped limiting hole 5 driven by the lifting rod 1. An elastic member 6 is provided in the lifting rod 1, one end of the elastic member 6 abuts against the inside of the lifting rod 1, and the other end abuts against the tail of the positioning pin 4. The positioning pin 4 can be telescopically movable under the action of the elastic member 6. Under normal conditions, the top of the positioning pin 4 extends into the special-shaped limiting hole 5, and a limiting end 1 51 and a limiting end 2 52 are arranged in the special-shaped limiting hole 5.

[0027] When the lifting rod 1 is rotated to the open state, that is, when the baking tray 2 is rotated to the open state, the positioning pin 4 moves in the special-shaped limiting hole 5 until the positioning pin 4 abuts against the limiting end 1 51 of the special-shaped limiting hole 5, and the limiting end 1 51 limits the positioning pin 4, so that the lifting rod 1 and the baking tray 2 are suspended at a position forming a right angle or an obtuse angle with the baking tray 2 3; at this time, the positioning pin 4 is driven to overcome the force of the elastic member 6 to shrink, so that the positioning pin 4 shrinks to be separated from the special-shaped limiting hole 5, and the limitation of the positioning pin 4 and the limiting end 1 51 is released, and the lifting rod 1 can continue to rotate in the opening direction. At this time, the positioning pin 4 abuts against the limiting end 2 52, and as the lifting rod 1 continues to rotate, the positioning pin 4 continues to move along the limiting end 2 52 until the lifting rod 1 is fully opened.

[0028] In this embodiment, when the angle of the lifting rod 1 together with the baking tray 1 2 relative to the baking tray 2 3 is rotated from 0° to 110°, the positioning pin 4 always moves in the special-shaped limiting hole 5, and when the angle of the lifting rod 1 together with the baking tray 1 2 relative to the baking tray 2 3 is just rotated to 110°, the positioning pin 4 just abuts against the limiting end 1 51, so that the limiting end 1 51 forms a limit for the positioning pin 4; when the lifting rod 1 together with the baking tray 1 2 relative to the baking tray 2 3 is rotated from 110° to 180°, the positioning pin 4 always moves along the limiting end 2 52, that is, the limiting end 2 52 abuts against the positioning pin 4, so that the positioning pin 4 is in a contracted state during the movement.

[0029] The angle adjustment assembly also includes a traction mechanism for controlling the extension and retraction of the positioning pin 4, the traction mechanism includes an elastic member 6, a traction rope 7, a slider 9 and a button 8, the two ends of the lifting rod 1 extend symmetrically to the same side of the baking tray 2 3 and are fixedly connected to the corresponding connecting seat 12 through a rotating shaft, there are two positioning pins 4, which are respectively arranged at the ports of the two ends, the positioning pin 4 is arranged horizontally, and a fixed seat is provided at the end of the lifting rod 1, and a through hole is opened on the fixed seat for the extension and retraction of the positioning pin 4, and the top end of the positioning pin 4 passes through the through hole and extends into the special-shaped limiting hole 5 on the connecting seat 12.

[0030] There are two traction ropes 7 and two sliders 9. In this embodiment, the button 8 is located at the midpoint of the lifting rod 1. The two sliders 9 are located at both ends of the button 8 and are slidably connected to the inside of the lifting rod 1. Each slider 9 is connected to the corresponding positioning pin 4 through the traction rope 7. One end of each traction rope 7 is connected to the tail end of the positioning pin 4, and the other end is connected to the slider 9. That is, the two traction ropes 7, the two sliders 9 and the two positioning pins 4 are symmetrically arranged on the lifting rod 1 with the button 8 as the center point. The extension directions of the two traction ropes 7 are located on both sides of the lifting rod 1, so that the traction ropes 7 pull the corresponding positioning pins 4 from both sides of the lifting rod 1. The button 8 is located between the two sliders 9 and forms a linkage with the sliders 9. By pressing the button 8 to drive the two sliders 9 to move relative to each other, the two sliders 9 pull the positioning pin 4 through the corresponding traction rope 7, and the positioning pin 4 overcomes the force of the elastic member 6 and shrinks, so that the positioning pin 4 is separated from the special-shaped limiting hole 5. When the traction rope 7 is not pulled, the positioning pin 4 is restored to a normally stretched state under the elastic force of the elastic member 6.

[0031] The slider 9 includes a base 91 slidably connected to the lifting rod 1. The base 91 is a hollow block structure. A hole for the traction rope 7 to pass through is provided at the end away from the button 8. A connecting hole 92 is provided on the bottom surface of the base 91. A connecting terminal is provided at the end of the traction rope 7 extending into the base 91. The connecting terminal is fixed to the connecting hole 92 by a fastener to enable the slider 9 to slide and pull the traction rope 7.

[0032] Furthermore, there are multiple connection holes 92 , which are equidistantly arranged in sequence along the sliding direction of the slider 9 , so that the stretching degree of the traction rope 7 can be adjusted by fixing one end of the traction rope 7 to different connection holes 92 .

[0033] The base is provided with a connection hole 92 for fixing the end of the corresponding traction rope 7. Figure 4 and 5 As shown, a protrusion 93 is also provided on the base 91, and the protrusion 93 has a first inclined surface 94. The end of the first inclined surface 94 facing the button 8 is higher than the end facing the connecting hole 92. The button 8 is provided with two symmetrically distributed second inclined surfaces 81. The first inclined surface 94 and the second inclined surface 81 are both smooth planes. The end of the second inclined surface 81 facing the slider 9 is higher than the end facing the center of the button 8. In the initial state, the higher end of the second inclined surface 81 of the button 8 abuts against the higher end of the first inclined surface 94 of the protrusion 93, and the button 8 is arranged above the first inclined surface 94. When the button 8 moves downward, that is, when it is pressed downward, the first inclined surface 94 and the second inclined surface 81 will be misaligned, thereby driving the protrusion 93 to move along the inclined direction, that is, the protrusion 93 moves toward the center of the button 8, and finally the two sliders 9 move synchronously and relatively toward the center of the button 8. The sliders 9 pull their respective corresponding traction ropes 7, prompting the traction rope 7 to pull the positioning pin 4 to contract.

[0034] It should be noted that if Figures 7 to 9 As shown, when the button 8 is pressed, the button 8 is pressed down to drive the slider 9 to pull the traction rope 7. The traction rope 7 is in a taut state along the extension direction of the lifting rod 1. When the slider 9 pulls the traction rope 7, the traction rope 7 can quickly and accurately pull the positioning pin 4. When the external force of pressing the button 8 is released, the elastic force of the elastic member 6 causes the positioning pin 4 to return to a normally extended state. When the positioning pin 4 is extended, the traction rope 7 is pulled in the opposite direction, so that the slider 9 slides away from the button 8 under the pull of the traction rope 7, so that the two sliders 9 slide in the direction away from the button 8, that is, they are restored to the initial state position.

[0035] Furthermore, the lifting rod 1 is hollow inside, and a plurality of guide protrusions 10 extend from its inner wall. The plurality of guide protrusions 10 are evenly spaced and distributed along the length direction of the lifting rod 1. Limiting holes are provided on the guide protrusions 10. The traction rope 7 passes through the limiting holes of the guide protrusions 10 in turn to guide the traction rope 7 to extend along the length direction of the lifting rod 1. When the slider 9 and the positioning pin 4 pull the traction rope 7 to move, the traction rope 7 can move back and forth along the guide protrusions 10, which facilitates the movement of the traction rope 7.

[0036] Further, if Figure 6 As shown, the traction rope 7 includes a sleeve 71 and a rope body 72 located in the sleeve 71. The sleeve 71 extends and is fixed along the guide protrusion 10. The rope body 72 passes through the sleeve 71 and its two ends are respectively connected to the positioning pin 4 and the slider 9, so that the rope body 72 can move in the sleeve 71. This can prevent the rope body 72 from being stuck in the sleeve 71, making the movement of the traction rope 7 more flexible and accurate.

[0037] Furthermore, a plurality of positioning protrusions 11 are provided on the inner wall of the lifting rod 1 along the length direction of the slider 9 , and the positioning protrusions 11 act as movable limiters for the slider 9 , so that the slider 9 can slide back and forth along the positioning protrusions 11 to realize the sliding of the slider 9 in the lifting rod 1 .

[0038] Furthermore, the elastic member 6 is a conical spring, the top end of which abuts against the positioning pin 4, and the bottom end abuts against the nearest guide protrusion 10 in the lifting rod 1, so that the extension and retraction of the positioning pin 4 can be more stable.

[0039] The present utility model is not limited to the above-mentioned optimal implementation mode. Anyone can derive other various forms of products under the inspiration of the present utility model. However, no matter what changes are made in the shape or structure, all those having the same or similar technical solutions as the present application fall within the protection scope of the present utility model.

Claims

1. The lifting rod structure for the baking tray is characterized in that: The invention comprises a lifting rod (1), a first baking tray (2) and a second baking tray (3), wherein the lifting rod (1) is connected to the first baking tray (2), the lifting rod (1) is turned over and connected to the second baking tray (3), an angle adjustment component is provided between the lifting rod (1) and the second baking tray (3), and the angle adjustment component comprises a positioning pin (4) and a special-shaped limiting hole (5). The positioning pin (4) is telescopically connected to the lifting rod (1) and rotates with the lifting rod (1), and the special-shaped limiting hole (5) is arranged on the second baking tray (3). The positioning pin (4) extends into the special-shaped limiting hole (5) and moves back and forth along the special-shaped limiting hole (5) driven by the lifting rod (1). The special-shaped limiting hole (5) has a limiting end 1 (51) and a limiting end 2 (52). When the lifting rod (1) is rotated to the open state, the positioning pin (4) moves to abut against the limiting end 1 (51) of the special-shaped limiting hole (5), so that the lifting rod (1) and the baking tray 1 (2) are suspended at a position forming a right angle or an obtuse angle with the baking tray 2 (3); when the positioning pin (4) is retracted to be separated from the special-shaped limiting hole (5), the lifting rod (1) continues to rotate in the opening direction, so that the positioning pin (4) abuts against the limiting end 2 (52), and the positioning pin (4) continues to move along the limiting end 2 (52) to the fully open state; The angle adjustment assembly further comprises a traction mechanism for controlling the extension and retraction of the positioning pin (4), the traction mechanism comprising an elastic member (6), a traction rope (7), a slider (9) and a button (8); the two ends of the lifting rod (1) extend symmetrically to the same side of the second baking tray (3); the number of the positioning pins (4) is two and they are respectively arranged at the ports of the two ends; the elastic member (6) is installed in the end of the lifting rod (1) and abuts against the positioning pin (4), so that the positioning pin (4) can be elastically extended and retracted, and the positioning pin (4) is in a normally extended state under the action of the elastic member (6); The number of the traction rope (7) and the slider (9) is two, and the two sliders (9) are slidably connected to the inside of the lifting rod (1) in sequence. Each slider (9) is connected to the corresponding positioning pin (4) through the traction rope (7). One end of each traction rope (7) is connected to the tail end of the positioning pin (4), and the other end is connected to the slider (9). The button (8) is located between the two sliders (9) and forms a linkage with the sliders (9). By pressing the button (8), the two sliders (9) are driven to move relative to each other. The two sliders (9) pull the positioning pin (4) through the corresponding traction rope (7). The positioning pin (4) overcomes the force of the elastic member (6) and shrinks, so that the positioning pin (4) is separated from the special-shaped limiting hole (5).

2. The lifting rod structure for a baking tray according to claim 1, characterized in that: The slider (9) includes a base (91) slidably connected to the lifting rod (1), the base (91) is provided with a connecting hole (92) for fixing the end of the corresponding traction rope (7), the base (91) is also provided with a protrusion (93), the protrusion (93) has a first inclined surface (94), the end of the first inclined surface (94) facing the button (8) is higher than the end facing the connecting hole (92), the button (8) is provided with two symmetrically distributed second inclined surfaces (81), the second inclined surfaces (81) correspond to and match the first inclined surfaces (94) one by one.

3. The lifting rod structure for a baking tray according to claim 2, characterized in that: The connection holes (92) are multiple in number and are arranged equidistantly along the sliding direction of the slider (9).

4. The lifting rod structure for a baking tray according to claim 2, characterized in that: The lifting rod (1) is hollow inside, and its inner wall is provided with a plurality of guide protrusions (10) which are spaced apart along the length direction of the traction rope (7) and are used to guide the traction rope (7).

5. The lifting rod structure for a baking tray according to claim 4, characterized in that: The traction rope (7) comprises a sleeve (71) and a rope body (72) located in the sleeve (71); the sleeve (71) extends along the distribution direction of the guide protrusion (10) and is guided and limited by the guide protrusion (10); the rope body (72) passes through the sleeve (71) and its two ends are respectively connected to the positioning pin (4) and the slider (9).

6. The lifting rod structure for a baking tray according to claim 2, characterized in that: The inner wall of the lifting rod (1) is provided with a plurality of positioning protrusions (11) along the length direction of the slider (9) to form a movable limit for the slider (9), so that the slider (9) can slide back and forth along the positioning protrusions (11).

7. The lifting rod structure for a baking tray according to claim 1, characterized in that: Both ends of the lifting rod (1) are rotatably connected to the second baking tray (3) via a connecting seat (12), and the special-shaped limiting hole (5) is arranged on the connecting seat (12).

8. The lifting rod structure for a baking tray according to claim 1, characterized in that: When the angle of the lifting rod (1) together with the baking tray one (2) relative to the baking tray two (3) is rotated from 0° to 110°, the positioning pin (4) always moves in the special-shaped limiting hole (5); when the angle of the lifting rod (1) together with the baking tray one (2) relative to the baking tray two (3) is exactly rotated to 110°, the positioning pin (4) just abuts against the limiting end one (51), so that the limiting end one (51) limits the positioning pin (4); when the angle of the lifting rod (1) together with the baking tray one (2) relative to the baking tray two (3) is rotated from 110° to 180°, the positioning pin (4) always moves along the limiting end two (52).

9. The lifting rod structure for a baking tray according to claim 4, characterized in that: The elastic member (6) is a conical spring, the top end of which abuts against the positioning pin (4) and the bottom end of which abuts against the nearest guide protrusion (10) in the lifting rod (1).