Retractable door for oven

Abstract

A cooking utensil is disclosed, comprising: a hollow body having an interior for receiving a product to be cooked, the body having an opening through which the product to be cooked can move relative to the interior; a guide portion mounted within the body; and a door attached to the body to close the opening, the door comprising: a first latch mounted to the door; and a second latch mounted to the door and capable of reciprocating independently between a first position and a second position relative to the first latch, wherein the second latch is actuated to move toward the second position such that when the door is moved to close the opening, the second latch is received within the body and deflected toward the first position via the guide portion until a portion of the second latch disengages from the guide portion and is actuated to move toward the second position to stop behind the guide portion.

Description

[0001] This application is a divisional application of Chinese patent application filed on June 29, 2018, with national application number 2018800511183 (PCT application number PCT / AU2018 / 000109) and entitled "Retractable door for oven". Technical Field

[0002] This technology relates to oven doors, and more specifically to damped telescopic doors for microwave ovens or other ovens. Background Technology

[0003] Soft-close oven doors utilize friction or damping elements acting on the door retraction mechanism. When the latch blade carried by the oven door passes through a mating groove in the oven body, the blade is engaged, and the door is pulled closed by the damping action of the return spring. If the latch blade disengages from the retraction mechanism, the user may be unable to re-engage it. Unless re-engaged, a malfunction occurs, preventing the oven door from closing completely. Consequently, the oven becomes inoperable and requires professional repair. Summary of the Invention

[0004] The purpose of this technology is to substantially overcome or at least improve the aforementioned disadvantages, or at least provide a useful alternative. In a preferred embodiment, it is desirable to provide a retraction mechanism for an oven door. In a preferred embodiment, the mechanism includes a guide rail that deflects to allow re-engagement between the latch blades and the mechanism. In other embodiments, an oven door with two latch blades is provided. The lower blade is fixed, while the upper blade reciprocates against a spring or bias, making the door easier to close.

[0005] According to the present invention, a cooking utensil is provided, comprising:

[0006] A hollow body having an interior for accommodating a product to be cooked, the body having an opening through which the product to be cooked can move relative to the interior.

[0007] The guide section is installed inside the main body;

[0008] A door, attached to the body to close the opening, the door comprising:

[0009] The first latch, which is installed on the door; and

[0010] A second latch, which is mounted on the door and is capable of reciprocating independently between a first position and a second position relative to the first latch, wherein the second latch is driven to move toward the second position such that when the door is moved to close the opening, the second latch is received within the body and deflected toward the first position by a guide until a portion of the second latch disengages from the guide and is driven to move toward the second position to stop behind the guide.

[0011] Preferably, the cooking appliance further includes a retraction mechanism installed on the body to pull the door to a closed position, the mechanism comprising:

[0012] The latch engages with the first latch; and

[0013] A profile, which provides a track along which the hook moves;

[0014] The track is defined by a first sidewall and a second sidewall, wherein the first sidewall of the track is reversibly deformable to increase the displacement between the first sidewall and the second sidewall at at least a portion of the track to orient the hook to engage the first latch.

[0015] Preferably, the track includes:

[0016] The parking area is located near the opening; and

[0017] The end portion, which is away from the opening,

[0018] The first sidewall of the track is capable of recoverable deformation to increase the displacement between the first and second sidewalls at the end portion of the track.

[0019] Preferably, the hook includes a front protrusion and a rear protrusion located within the track to facilitate sliding movement of the hook along the track.

[0020] Preferably, the hook further includes a guide ramp opposite to the first latch for oblique engagement with the first latch, such that the first sidewall deforms under a load applied by the protrusion.

[0021] Preferably, a gap is provided near the first sidewall to promote deformation of the first sidewall.

[0022] Preferably, the hook is driven to move toward the interior of the body to stop at the end portion of the track.

[0023] Preferably, the latch further includes a recess for receiving a portion of the first latch, wherein the recess is oriented toward that portion of the first latch when the first sidewall deforms.

[0024] Preferably, the second latch is mounted to the door via a movable bracket.

[0025] Preferably, the cooking appliance further includes a tension spring, one end of which is connected to a movable bracket and the other end of which is fixed to the door to drive the second latch to move toward the second position.

[0026] Preferably, the first latch is secured to the door.

[0027] Preferably, the first latch is fixed to the door by a fixed bracket, wherein the movable bracket has legs that mate with the fixed bracket, such that the first latch and the second latch are mechanically interconnected.

[0028] In an alternative embodiment, the first latch is capable of reciprocating independently relative to the second latch.

[0029] Preferably, the cooking utensil further includes an interlocking assembly having:

[0030] The controller is used to monitor various security states of the door; and

[0031] Multiple safety switches, each configured to be actuated based on a corresponding position of the door to output a switch status signal to the controller, wherein the switches are actuated sequentially as the door moves to close the opening.

[0032] Preferably, the interlocking assembly further includes a primary switch, a secondary switch, and a monitoring switch.

[0033] Preferably, when the door moves to close the opening, the viewing switch is actuated first, followed by the actuation of the primary switch and the secondary switch.

[0034] Preferably, the interlocking assembly further includes a rotatable cam adjacent to the monitoring switch and the secondary switch, the cam having multiple convex angles to actuate the monitoring switch and the secondary switch when the cam rotates.

[0035] Preferably, the first cam lobes actuate the monitoring switch first, and wherein, as the cam rotates, the second cam lobes subsequently actuate the secondary switch.

[0036] Preferably, the first or second cam convex angle is configured to engage with the first latch to rotate the cam when the door moves to close the opening.

[0037] Preferably, when the secondary switch is actuated by the second convex angle, the primary switch is actuated by the second latch. Attached Figure Description

[0038] Exemplary embodiments will now be described with reference to the following figures, in which:

[0039] Figure 1 This is a perspective view of a microwave oven according to an embodiment.

[0040] Figure 2 It is used for Figure 1 A schematic side view of the latch blades, interlocking assembly, and retraction mechanism of a microwave oven's retractable oven door.

[0041] Figure 3 yes Figure 2 A schematic side view of the latch blade, interlocking assembly, and retraction mechanism, showing the latch of the retraction mechanism engaging with the latch blade.

[0042] Figure 4 yes Figure 2 A schematic side view of the latch blade, interlock assembly, and retraction mechanism, showing the latch blade in a partially retracted position, thereby actuating the switch of the interlock assembly.

[0043] Figure 5 yes Figure 2 A schematic side view of the latch blade, interlock assembly, and retraction mechanism shows the latch blade in the fully retracted position, thereby actuating all switches of the interlock assembly.

[0044] Figure 6 This is a side view of an oven door with a fixed lower latch blade and a reciprocating upper latch blade.

[0045] Figure 6a -e is a schematic side view of the latch blades, interlocking assembly, and retraction mechanism of a retractable oven door for a microwave oven according to an alternative embodiment.

[0046] Figure 7 yes Figure 2 A schematic side view of the latch blade, interlock assembly, and retraction mechanism, showing the retraction mechanism with a retraction status sensor.

[0047] Figure 7a -h is according to alternative embodiments Figure 2 A schematic side view of the latch blade, interlock assembly, and retraction mechanism.

[0048] Figure 8 It is used for Figure 1 A perspective view of the lower latch blade support of a microwave oven's retractable oven door. Detailed Implementation

[0049] like Figure 1As shown, an oven, such as microwave oven 100, has a revolving door 101 attached to a body 102 via a vertical hinge (not shown). The door 101 has a frame 102 surrounding a central window 103. A handle 104 is attached to a vertical outer edge of the frame 102. A pair of latching blades 106, 107 are attached to the same vertical portion of the frame 105. When the door swings closed, the latching blades 106, 107 engage with a mating groove 210 (as shown in the image). Figure 2 (As shown) enters the body 102, such that the head 108 of the lower latch blade 106 engages with the retraction mechanism 200 within the body 102 of the oven 100, which is accessible through the slot 210. Figure 2 (As shown). The oven 100 also has a user interface 109, which has user input 110 and a display 111, such as a graphical display screen.

[0050] like Figure 2 As shown, the retraction mechanism 200 within the oven body 201 has a movable latch or hook 202 that accommodates the head 108 of the latch blade 106. The lower latch blade 106 is secured within the oven door 203 to which it is attached. In this example, the hook 202 is symmetrical, with each of its two faces having similar features.

[0051] Figure 2 The right side of the symmetrical latch 202 is shown. This right side has a front protrusion in the form of a front guide pin 204 and a rear protrusion in the form of a rear guide pin 205, wherein the front guide pin 204 is closest to the door 203. The left side may be the same as or substantially similar to the right side, and may also have a front and rear guide pin with the same construction. The top of the latch 202 has a recess or groove 211 for receiving the head 108 of the lower latch blade 106. The groove 211 is defined by a front wall, a rear wall, and a base extending between the rear and front walls. The groove 211 is formed to mate with the head 108 of the lower latch blade 106 such that the head 108 can be received and engaged by the groove 211.

[0052] exist Figure 2 In the example, the left side of a pair of similar tracks 206 is shown engaging with a left guide pin (not shown). The right track of this track pair has been removed in the figure to show the guide pins 204, 205 on the right side of the hook 202. In this way, the hook 202 is engaged in a forward-extended or parked position (where the hook 202 is adjacent to the slot 210) and a rearward retracted position (see [reference]). Figure 5The hook 202 slides between adjacent left and right tracks as it advances toward the interior of the oven body 201. The angular orientation of the hook 202 is determined by how the guide pin coordinates with the shape of the track 206 (and the right track). In this example, the track has a long, straight end portion 207 and a hook-inclined or resting portion 208 at approximately a 90-degree angle. Preferably, the resting portion 208 of the track forms an angle slightly greater than 90 degrees with the end portion 207 to facilitate sliding of the hook 202 between a forward-extended position and a rearward-retracted position. When the oven door is closed, the hook 202 is in... Figure 2 The shown parking position. Because the hook 202 is tilted forward by the parking portion acting on the front guide pin 204, frictional interference and contact with the underside of the head 108 are minimized or eliminated. With this arrangement, the hook 202 is prepared or "parked" to releasably accommodate the head 108 of the lower latch blade 106. In this position, the angular orientation of the hook 202 is referred to as the opening angle and is measured with reference to the angle between the longitudinal central axis of the end portion 207 and the inner surface of the front wall of the groove 211. Preferably, the minimum opening angle is approximately 105 degrees to allow the hook 202 to releasably accommodate the head 108 of the lower latch blade 106. The arrangement of the front guide pin at the parking portion 208 provides sufficient friction for the hook 202 to be held at the parking portion 208 with an offset in the direction toward the interior of the furnace body 201.

[0053] In a preferred embodiment, contact between the head 108 and the hook 202 is effectively eliminated until the head 108 contacts the trigger 209 of the hook. Here, the trigger 209 is an extension of the rear sidewall of the groove 211 of the hook. Contact with the trigger 209 tends to rotate the hook 202 about the rear guide pin 205. This aligns the pins 204, 205 with the end portion 207, thereby orienting the groove 211 of the hook 202 to capture the head 108 of the lower latch blade 106 to provide engagement therebetween. The position where the groove 211 of the hook 202 is oriented to engage with the head 108 of the lower latch blade 106 is referred to as the engagement position.

[0054] like Figure 3 As shown, the latch blade 106 is further inserted through the slot 210, causing the hook 202 to advance 300 toward the interior of the furnace body 201 and rotate into the engaged position. This rotation also causes the head 108 to sink into the recess / groove 302 of the hook 202. In this position, the angle between the longitudinal central axis of the end portion 207 and the inner surface of the front wall of the groove 302 is typically about 85 to 90 degrees, preferably 88 degrees. The groove 302 has a curved rear edge corresponding to the curved front edge of the head 108. The high point of the rear edge forms the trigger 209.

[0055] With both the front guide pin 301 and the rear guide pin positioned at their end portions 207, the hook 202 and the lower latch blade 106, engaged by the groove 302, slide into the interior of the oven body 201 under bias along the end portion 207 of the track 206, thereby closing the oven door 203. Since all the hook guide pins are on the same path of motion in the end portion 207 of the track, the retraction force applied by the tension spring 304 is used to retract the hook 202 and the latch blade 106 engaged in the groove 302 of the hook 202. The force of the spring 304 is resisted by a damping element in the form of a shock absorber 305, which is attached to the hook 202 via a flexible or spherical joint 320 through a shaft 306.

[0056] Figure 3 The oven door device shown has an interlocking assembly comprising three safety switches: a primary switch 310, a secondary switch 311, and a tertiary or monitoring switch 312. Figure 3 In the first engagement position shown, head 108 is captured, but primary safety switch 310, secondary safety switch 311, or tertiary safety switch 312 is not triggered or activated.

[0057] Each switch 310, 311, 312 provides a switch status signal 313 to the device's microprocessor or controller 314. In response to the outputs of the three switches 310, 311, 312, the controller 314 monitors various safety states of the door. The processor also monitors and controls other oven functions. The processor 314 receives data from the user interface 315 and may provide signals to the interface 315 for purposes such as driving displays, audible or visual alarms, or other user-related data.

[0058] like Figure 4 As shown, the action of the retraction mechanism 400 causes the front surface of the latch pin 106 to contact a convex angle 401 of the rotating cam 402. The inward movement 403 of the blade 106 causes the cam 402 to rotate counterclockwise 404. This causes the second convex angle or portion 405 to engage or contact the third switch 312. This is detected by the processor 314 as a change in switch state. When the third-stage switch 312 is activated, the primary switch 310 has not yet been activated by the upper latch blade 107. As the head 410 of the upper latch blade 107 enters the interior of the oven, the underside of the head 410 rides on an inclined guide, ramp, or surface 411 located between the adjacent slot and the switch 310 in the oven body. The head 410 is supported by an upper support 414, which reciprocates against the bias of the tension spring 415.

[0059] like Figure 4As shown, the fixed lower latch blade 106 and the reciprocating upper latch blade 107 are mechanically interconnected and thus aligned for reciprocating sliding motion via guide features 412 formed on the lower support 413 carrying the lower latch blade 106. The upper latch blade 107 is carried by a movable or sliding support 414. The movable support has legs 421 that engage with the guide and alignment features 412 of the lower support 413. Vertical sliding motion between the upper and lower supports is resisted by a tension spring 415 extending between a hook or opening 416 formed on the upper support 414 and a fixed point 417 located away from the upper support (e.g., on the body or chassis of the oven). The resulting arrangement provides a limited and fixed range of motion 420, wherein the upper support 414 and the lower support 413 remain interconnected.

[0060] like Figure 5 As shown, when the upper latch blade 107 and the lower latch blade 106 are fully inserted, the oven door carrying them is considered fully closed. In this direction, the second convex angle 405 contacts the third-stage switch 312. In this position, the upper bracket 414 has been pulled downwards by the tension spring 415 across the upper lip 501 of the guide or ramp 411. Then, the convex angle 401 of the cam 402 contacts the secondary switch 311, while the upper latch blade 107 contacts the primary switch 310.

[0061] like Figure 6 As shown, the reciprocating upper support 600 is guided by an upper guide 601 for vertical movement, and a coupling 602 provides guidance between the upper and lower supports 603. A tension spring 604 resisting the vertical movement of the upper support is held between a hook 605 formed on the upper support and a fixed attachment point 606 located on an internal chassis assembly, frame, or fixed point.

[0062] like Figure 6a As shown, it will be understood, as Figure 5 The arrangement of the upper latch blade 107 and lower latch blade 106, the retraction mechanism 200, and the switches 310, 311, and 312 shown can be interchanged, such that the upper latch blade 107' cooperates with the retraction mechanism 200' and the cam 402', the cam 402' contacts the secondary switch 311' and the tertiary switch 312' in sequence, while the lower latch blade 106' rides on the ramp 411' and contacts the primary switch 310'. In this arrangement, it is also conceivable that the upper latch blade 107' is fixed, and the lower latch blade 106' reciprocates in the same manner as the upper latch blade 107.

[0063] exist Figure 6bIn another embodiment depicted, the lower latch blade 607 and the upper latch blade 608 are mechanically interconnected by a common support 609 and are thus aligned to reciprocate sliding on corresponding inclined guides, ramps, or surfaces 615, 615'. The common support 609 reciprocates against the bias of tension springs 610, 610' extending between corresponding openings 611, 611' formed in the common support 609 and corresponding fixed points 612, 612' positioned away from the common support 609. In this way, the resulting arrangement allows both the lower latch blade 607 and the upper latch blade 608 to reciprocate in unison.

[0064] Figure 6c The illustrated embodiments and Figure 6b The illustrated embodiment is substantially similar, except that the lower latch blade 607' and the upper latch blade 608' are not mechanically interconnected by a common support. Instead, the lower latch blade 607' is carried by a lower support 609a, and the upper latch blade 608' is carried by an upper support 609b, separate from the lower support 609a. Both the lower support 609a and the upper support 609b reciprocate against the bias of tension springs 610, 610', which extend between corresponding openings 611, 611' formed on the lower support 609a and the upper support 609b and corresponding fixed points 612, 612' located away from the lower support 609a and the upper support 609b. In this way, the resulting arrangement allows the lower latch blade 607' and the upper latch blade 608' to reciprocate independently of each other.

[0065] exist Figure 6d In another embodiment shown, both the lower latch blade 613 and the upper latch blade 614 are fixed and mechanically interconnected by a common support 616. The upper latch blade 614 engages with a retraction mechanism 617 having substantially the same features as the retraction mechanism 200 and a cam 402' having substantially the same features as the cam 402. In this way, the first convex angle 401' and the second convex angle 405' of the cam 402' contact the secondary switch 311' and the tertiary switch 312' in substantially the same manner as described above with respect to the first convex angle 401 and the second convex angle 405. In this arrangement, when the upper latch blade 614 and the lower latch blade 613 are fully inserted, each of the secondary switches 311, 311' and the tertiary switches 312, 312' is activated, and the oven door is considered to be fully closed.

[0066] Figure 6e The illustrated embodiments and Figure 6dThe embodiments shown are similar, except that the lower latch blade 613' and the upper latch blade 614' are not mechanically interconnected by a common support, but are instead supported by separate corresponding fixed supports 616a, 616b.

[0067] If the lower latch disengages from the retraction mechanism, the oven may experience undesirable malfunctions. In conventional soft-close door systems, the latch can only engage or capture the lower latch blade in the initial or receiving position (see [link to relevant documentation]). Figure 2 In some systems, once the latch has been released or has advanced sufficiently without the latch blade present, the average user cannot actually re-engage it. This will prevent the oven door from closing, causing malfunctions and requiring repairs. Limited vertical space within the oven further complicates the issue.

[0068] like Figure 7 As shown, one way to alleviate the above-mentioned problem is by providing one or more tracks that can deflect under load applied by the front guide pin 701 and the rear guide pin 702. In this way, a gap 709 is formed below the lower edge of the track 703, preferably adjacent to the end portion 207 of the track 703, thereby allowing the lower edge of the track 703 to deflect or bend into the gap / vacancy space 709 under load. The deformation height can be 50% to 50% greater than the nominal vertical height of the track. The deformation area 704 in the lower edge of the track is caused by the stress applied by the bend 705 of the head 706 acting on the angled or inclined surface of the hook 700 or the guide ramp 707. When forcefully inserted, the head 706 will ride on the inclined surface 707 of the hook 700, applying greater pressure to the front guide pin 701. This causes bulging, bending, or deformation in the lower edge of one or more tracks. This deformation is sufficient to lower the hook and thus allow the head 706 to enter the recess or groove 708 of the hook 700, thereby re-engaging it. Once re-engaged and the head 706 is recaptured, the track returns to its initial shape due to its flexibility and elasticity or resilience.

[0069] However, during improper use (such as forcefully closing the oven door), the track may deflect and eventually break or fail. This could be due to the force of the oven door closing rapidly causing the lower latch blade to sit on top of the latch instead of being accommodated within the latch's groove. In this situation, the lower latch blade will force the latch downwards, resulting in excessive bending of the track, leading to track failure.

[0070] exist Figure 7a In the embodiment shown by -h, with Figure 7 Compared to the shape and profile of the gap 709 shown, changing the shape and profile of gaps 709a-h minimizes the tendency of track 703 to fail under load. For example... Figure 7aAs shown, the longitudinal length of gap 709a is greater than the longitudinal length of gap 709 to transfer the load over a larger area, thereby increasing the strength of track 703. (Reference) Figure 7b The gap 709b is provided with a central transverse rib 712 extending across the gap 709b to reduce the deflection of the track 703. For example... Figure 7c As shown, the lateral height of gap 709c is reduced relative to the lateral height of gap 709, thereby increasing the strength of track 703. (Reference) Figure 7d and 7e The periphery of gaps 709d and 709e is provided with one or more pairs of opposing circular protrusions 713, which protrude into the gaps to limit the deflection of track 703. (Reference) Figure 7f -h, the deflection degree of track 703 can be changed by filling voids 709f, 709g, and 709h with filler materials of different densities (indicated by the degree of crosshairs). In one or more embodiments, the filler material can be selected from the group consisting of low-density, medium-density, or high-density plastics.

[0071] In other embodiments, the tolerance of the door being mounted at a vertical hinge around the pivot point allows for full vertical movement of the door 720 to help the head 706 enter the groove 708 of the hook, thereby re-engaging it.

[0072] Refer again Figure 7 When the latch 700 is fully retracted and the oven door is open, the processor 109 generates a fault state. The oven door position sensor 710 sends an orientation signal 711 to the processor 715 of the device. The position of the latch 700 can be detected using a sensor 716, such as a Hall sensor, a magnetic sensor, or a mechanical switch-type sensor. The presence sensor 716 can be activated by a mating collar 717 attached to the shaft of the damper 718. When the current sensor indicates to the processor that the latch is retracted and the door presence sensor 710 indicates that the door is open, the processor can send a fault signal to the user interface, such as an alarm or other display on the graphic display 109.

[0073] like Figure 8 As shown, the lower bracket 800, which carries the lower latch blade 801, is securely fixed to the oven door 802. In this example, the lower portion of the bracket 800 is secured to the door by a fastener (806), which is, for example, carried within a cavity 803 at the lower end 804 of the lower bracket. In this example, the other end of the lower bracket is held by a finger or tab 805 that can be inserted behind the metal plate chassis assembly. The finger 805 restricts the upper end behind the chassis portion 806 to prevent the upper end of the bracket 800 from bending around the fastener at the lower end 804.

[0074] Although the invention has been described with reference to specific examples, those skilled in the art will understand that the invention can be implemented in many other forms.

[0075] As used herein, unless otherwise stated, the use of ordinal adjectives such as “first,” “second,” “third,” etc., to describe common objects merely indicates reference to different instances of similar objects and is not intended to imply that the objects described in this way must appear in a given order, in time, in space, in ordering, or in any other way.

[0076] Throughout this specification, references to "an embodiment," "an embodiment," or "an example" mean that a particular feature, structure, or characteristic described in connection with that embodiment is included in at least one embodiment of the invention. Therefore, the phrases "in one embodiment" or "in an example" appearing throughout the specification do not necessarily all refer to the same embodiment or example, but may refer to the same embodiment or example. Furthermore, in one or more embodiments, particular features, structures, or characteristics can be combined in any suitable manner, as will be apparent to those skilled in the art from this disclosure.

[0077] Similarly, it should be understood that in the foregoing description of exemplary embodiments of the invention, features of the invention are sometimes grouped together in a single embodiment, drawing, or description for the purpose of simplifying the disclosure and aiding in the understanding of one or more aspects of the invention. However, this method of disclosure should not be construed as reflecting an intention that the claimed invention requires more features than expressly recited in each claim. Rather, as reflected in the appended claims, inventive aspects lie in fewer than all features of a single foregoing disclosed embodiment. Any claims following this detailed description are expressly incorporated herein, each claim existing independently as a separate embodiment of the invention.

[0078] Unless otherwise expressly stated, it will be apparent from the following discussion that throughout the discussion of this specification, the use of terms such as “processing,” “computing,” “operation,” “determining,” etc., refers to the actions and / or processes of a microprocessor, controller, or computing system or similar electronic computing or signal processing device that processes and / or converts data.

[0079] Furthermore, as those skilled in the art will understand, although some embodiments described herein include features not found in other embodiments, combinations of features from different embodiments are intended to fall within the scope of the invention and form different embodiments. For example, in the appended claims, any claimed embodiment may be used in any combination.

[0080] Therefore, although preferred embodiments of the invention have been described, those skilled in the art will recognize that other and further modifications may be made thereto without departing from the scope of the invention, and all such changes and modifications falling within the scope of the invention are intended to be claimed.

[0081] Although the invention has been disclosed with reference to specific details of its construction, it should be understood that it is provided by way of example and not as a limitation on the scope of the invention.

Claims

1. A cooking utensil, comprising: A hollow body having an interior for accommodating a product to be cooked, the body having an opening through which the product to be cooked can move relative to the interior; A guide portion, which is installed within the main body; A door, attached to the body to close the opening, the door comprising: A first latch, the first latch being installed on the door; and A second latch is mounted to the door and is capable of reciprocating independently between a first position and a second position relative to the first latch. The second latch is driven to move toward the second position such that when the door is moved to close the opening, the second latch is received within the body and deflected toward the first position by the guide until a portion of the second latch disengages from the guide and is driven to move toward the second position to stop behind the guide.

2. The cooking utensil according to claim 1, further comprising a retraction mechanism, said retraction mechanism being mounted on the main body to pull the door to a closed state, said mechanism comprising: A latch that engages the first latch; as well as A profile, the profile being provided with a track, the hook moving along the track; The track is defined by a first sidewall and a second sidewall, wherein the first sidewall of the track is reversibly deformable to increase the displacement between the first sidewall and the second sidewall at at least a portion of the track to orient the hook to engage the first latch.

3. The cooking utensil according to claim 2, wherein, The orbit includes: The parking portion, which is adjacent to the opening; and The end portion, which is away from the opening, The first sidewall of the track is capable of recoverably deforming to increase the displacement between the first sidewall and the second sidewall at the end portion of the track.

4. The cooking utensil according to claim 3, wherein, The hook includes a front protrusion and a rear protrusion, which are located within the track to facilitate sliding movement of the hook along the track.

5. The cooking utensil according to claim 4, wherein, The hook also includes a guide ramp opposite the first latch for oblique engagement with the first latch, such that the first sidewall deforms under a load applied by the protrusion.

6. The cooking utensil according to claim 5, wherein, A gap is provided near the first sidewall to promote the deformation of the first sidewall.

7. The cooking utensil according to any one of claims 3 to 6, wherein, The hook is driven to move toward the interior of the body to stop at the end portion of the track.

8. The cooking utensil according to any one of claims 2 to 7, wherein, The latch also includes a recess for receiving a portion of the first latch, wherein the recess is oriented toward the portion of the first latch when the first sidewall deforms.

9. The cooking utensil according to any one of claims 1 to 8, wherein, The second latch is mounted to the door via a movable bracket.

10. The cooking appliance of claim 9, further comprising a tension spring, one end of which is connected to the movable bracket and the other end of which is fixed to the door to drive the second latch toward the second position.

11. The cooking utensil according to claim 10, wherein, The first latch is secured to the door.

12. The cooking utensil according to claim 11, wherein, The first latch is secured to the door by a fixed bracket, wherein the movable bracket has legs that mate with the fixed bracket, such that the first latch and the second latch are mechanically interconnected.

13. The cooking utensil according to any one of claims 1 to 10, wherein, The first latch is capable of reciprocating independently relative to the second latch.

14. The cooking utensil according to any one of claims 1 to 13, further comprising an interlocking assembly, said interlocking assembly having: A controller, used to monitor various security states of the door; and Multiple safety switches, each configured to be actuated based on a corresponding position of the door to output a switch status signal to the controller, wherein... The switch is actuated sequentially as the door moves to close the opening.

15. The cooking utensil according to claim 14, wherein, The interlocking assembly also includes a primary switch, a secondary switch, and a monitoring switch.

16. The cooking utensil according to claim 15, wherein, When the door moves to close the opening, the monitoring switch is actuated first, followed by the primary switch and the secondary switch.

17. The cooking utensil according to claim 16, wherein, The interlocking assembly also includes a rotatable cam adjacent to the monitoring switch and the secondary switch, the cam having multiple convex angles to actuate the monitoring switch and the secondary switch when the cam rotates.

18. The cooking utensil according to claim 17, wherein, The first convex angle of the cam actuates the monitoring switch first, and wherein, as the cam rotates, the second convex angle of the cam subsequently actuates the secondary switch.

19. The cooking utensil according to claim 18, wherein, The first or second convex angle of the cam is configured to engage with the first latch to rotate the cam when the door moves to close the opening.

20. The cooking utensil according to claim 19, wherein, When the secondary switch is actuated by the second convex angle, the primary switch is actuated by the second latch.

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