An oven with a conveniently adjustable slide rail mounting frame

Abstract

The present application relates to the technical field of kitchen appliances, and in particular to an oven with a slide rail mounting frame that is easy to adjust, comprising frame bodies symmetrically arranged on the left and right sides inside the oven cavity, each frame body comprising a vertical guide rail fixed to the inner side wall of the oven cavity, and the inner side wall of the vertical guide rail is provided with a rack extending in the vertical direction; at least one transverse sliding assembly is connected to the vertical guide rail through an adjusting component and a locking component; wherein the adjusting component comprises a hollow rotating shaft that is rotatable and axially movable and is arranged through all the transverse sliding assemblies on the same side. The adjusting (rotation) and locking (axial pushing) functions are integrated on a single hollow rotating shaft, and the user does not need any tools and can complete all operations by only three intuitive actions of "pulling, rotating and pushing". This simplicity directly results from the dual function design of the axial movement and rotation of the hollow rotating shaft, and the linkage relationship between the hollow rotating shaft, the extrusion piece, the tapered head and the gear transmission group.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of kitchen appliances, and in particular to an oven with a conveniently adjustable slide rail mounting frame. BACKGROUND

[0002] In modern family kitchens, the use frequency of ovens is increasing, whether it is baking cakes, roasting meat, or heating food, and the slide rail mounting frame inside the oven as a key component to support the baking tray and the roasting net directly affects the practicality of the oven.

[0003] Referring to Figure 9 , the slide rail mounting frame of the current mainstream oven on the market has many problems: on the one hand, the adjustment operation is complex: most slide rail mounting frames are fixed on the inner wall of the oven with multiple screws, when the distance between the slide rails needs to be adjusted according to different sizes of baking trays, a screwdriver must be used to disassemble the screws one by one, and after adjusting the position, they are tightened again, the whole process takes at least 5-8 minutes, not only time-consuming and laborious, but also repeated disassembly can cause the screw to slip and the mounting hole to deform, resulting in subsequent unstable fixation of the slide rail, on the other hand, the adaptation range is narrow: the fixing hole of the slide rail mounting frame is usually large (such as setting a group of holes every 10 cm), which can only realize the adjustment of fixed gears, for the special-shaped baking tray (such as oval baking bowl, irregular baking box) with a size between two gears, it is impossible to find a suitable installation position, and the baking tray can only be placed directly at the bottom of the oven, which not only affects the circulation of hot air, but also easily causes uneven heating of food, in addition, the installation stability is poor: the slide rail mounting frame of some cheap ovens is only fixed by a single screw, when the oven is working, the slide rail is easy to loosen and deviate due to the vibration caused by the internal hot air circulation, and even causes the baking tray to slide off, which has safety hazards.

[0004] With the diversification of consumers' baking needs, various specifications and shapes of baking utensils are emerging, and the traditional fixed mode of slide rail mounting frame has been unable to meet the flexible use demand, and the development of a kind of adjustable slide rail mounting frame with simple operation, wide adaptability and stable and reliable has become the key to improving the competitiveness of oven products. SUMMARY

[0005] Therefore, the technical problem to be solved by the present application is that the slide rail mounting frame of the existing oven has the problems of complicated adjustment operation, limited adaptive position and insufficient installation stability.

[0006] The technical problem is solved by the following technical solution: The present application provides a convenient adjustment of the slide rail mounting frame of the oven, which comprises a frame body symmetrically arranged on the left and right sides inside the oven cavity, each side of the frame body comprises a vertical guide rail fixed to the inner side wall of the oven cavity, and the inner side wall of the vertical guide rail is provided with a vertical rack; at least one transverse sliding assembly is connected with the vertical guide rail through an adjusting component and a locking component; wherein the adjusting component comprises: a hollow rotating shaft which is rotatable and axially movable and is provided in all transverse sliding assemblies on the same side, and one end of the hollow rotating shaft located in front of the oven is provided with a knob; a set of gear transmission assemblies are used to convert the rotating motion of the hollow rotating shaft into the vertical movement of the transverse sliding assembly along the vertical guide rail; the locking component is arranged inside the gear transmission assembly and is driven by the axial movement of the hollow rotating shaft to selectively press or separate from the inner wall of the vertical guide rail.

[0007] In a preferred embodiment of the convenient adjustment of the slide rail mounting frame of the oven, the transverse sliding assembly comprises a transverse outer guide rail connected with the gear transmission assembly and a transverse inner guide rail slidably sleeved in the transverse outer guide rail.

[0008] In a preferred embodiment of the convenient adjustment of the slide rail mounting frame of the oven, the inner ends of the corresponding transverse inner guide rails on the left and right sides are connected by a telescopic rod.

[0009] In a preferred embodiment of the convenient adjustment of the slide rail mounting frame of the oven, the gear transmission assembly comprises a first bevel gear fixedly sleeved on the hollow rotating shaft, a second bevel gear meshing with the first bevel gear, and a rotating cylinder coaxially fixedly connected with one end of the second bevel gear, and the other end of the rotating cylinder is provided with a walking gear meshing with the rack of the vertical guide rail.

[0010] In a preferred embodiment of the convenient adjustment of the slide rail mounting frame of the oven, the first bevel gear and the hollow rotating shaft are matched by a key and a key groove, the first bevel gear and the second bevel gear are fixed by a connecting rod, and the connecting rod is connected with the first bevel gear and the second bevel gear through bearings at both ends.

[0011] In a preferred embodiment of the convenient adjustment of the slide rail mounting frame of the oven, the locking component comprises a tapered head axially movably arranged in the rotating cylinder, a pair of extrusion rods radially movably arranged at the end of the rotating cylinder, and an extrusion piece fixedly arranged on the hollow rotating shaft, which can push or separate from the tapered head when the hollow rotating shaft moves axially.

[0012] In a preferred embodiment of the oven with the slide rail mounting frame convenient to adjust, the end of the rotating drum is connected with a rectangular frame through a bearing, and a pair of the extrusion rods are symmetrically arranged in the rectangular frame in a slideable manner, wherein each of the extrusion rods is matched with the key groove between the taper head.

[0013] In a preferred embodiment of the oven with the slide rail mounting frame convenient to adjust, the taper head comprises a frustum and a rod body fixedly connected with the frustum, and a spring for resetting the taper head is arranged between the outer wall of the rod body and the inner wall of the rotating drum.

[0014] In a preferred embodiment of the oven with the slide rail mounting frame convenient to adjust, a plurality of limiting rings are sequentially arranged in the inner cavity of the lateral outer guide rail along the length direction of the lateral outer guide rail, the hollow rotating rod is arranged in each of the limiting rings, and the knob is provided with scale marks.

[0015] In a preferred embodiment of the oven with the slide rail mounting frame convenient to adjust, the extrusion member comprises a sleeve ring arranged on the outer wall of the hollow rotating rod, the sleeve ring is provided with a pressing bolt, a trapezoidal block is arranged on the outer side wall of the sleeve ring, the trapezoidal block is matched with the taper head, a friction block is arranged on the other side of the outer side wall of the sleeve ring relative to the trapezoidal block, and the friction block is matched with the inner cavity of the lateral outer guide rail.

[0016] The present application has the advantages that the adjusting (rotating) and locking (axial pushing) functions are integrated on the single hollow rotating rod, the user can complete all operations only through three intuitive actions of "pulling, rotating and pushing" without any tools, and the simplicity directly comes from the double function design of the axial movement and rotation of the hollow rotating rod and the linkage relationship with the extrusion member, the taper head and the gear transmission group. Meanwhile, the scale marks on the knob are matched with the internal precise gear and rack transmission pair (composed of the walking gear and the vertical guide rail rack) to quantize the rotation angle into the accurate lifting height, so that the stepless adjustment is realized, the narrow adaptation range problem caused by the traditional fixed hole position is solved, the internal space of the oven can be flexibly adapted to various specifications and shapes of baking utensils.

[0017] The locking component of the present application adopts a pure mechanical radial extrusion self-locking principle. When the hollow rotating rod is pushed in, the axial thrust is converted into radial expansion force of the extrusion rod by the taper head, which is finally transmitted to the walking gear to generate a huge normal pressure between the gear teeth and the tooth groove side of the rack, forming strong static friction and even mechanical interlocking. This locking method does not rely on single screw fastening force, and the locking force is positively related to the bearing weight. The greater the bearing weight, the more reliable the locking. Therefore, it can effectively resist the vibration of the oven during operation, and ensure the absolute stability of the slide rail at any height, thereby fundamentally eliminating the risk of falling of the baking tray. In addition, the extension rod connecting the left and right slide rails not only ensures synchronous lifting, but also forms a stable rigid frame, effectively inhibiting the shaking during pulling out the baking tray, further enhancing the stability and safety of use. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings of the embodiments of the present application will be briefly introduced below. Obviously, the drawings described below only relate to some embodiments of the present application, but not limit the present application. Among them:

[0019] Figure 1 is a three-dimensional schematic view of the present application;

[0020] Figure 2 is a schematic view of the interior of the oven cavity of the present application;

[0021] Figure 3 is a schematic view of the single-sided frame structure of the present application;

[0022] Figure 4 is a schematic view of the double-sided frame structure of the present application;

[0023] Figure 5 is a schematic view of the frame cross-section structure of the present application Figure 1 ;

[0024] Figure 6 is an enlarged schematic view of structure A in the present application Figure 5 ;

[0025] Figure 7 is a schematic view of the frame cross-section structure of the present application Figure 2 ;

[0026] Figure 8 is an enlarged schematic view of structure B in the present application Figure 7 ;

[0027] Figure 9 is a schematic view of the interior of the oven cavity of the prior art.

[0028] In the drawings:

[0029] 1, oven cavity;

[0030] 2, frame body;

[0031] 3, vertical guide rail; 31, rack;

[0032] 4, horizontal sliding assembly; 41, horizontal outer guide rail; 411, limiting ring; 42, horizontal inner guide rail;

[0033] 5, adjusting component; 51, hollow rotating rod; 52, knob;

[0034] 6, gear transmission assembly; 61, first bevel gear; 62, second bevel gear; 63, rotating drum; 64, walking gear; 65, connecting rod;

[0035] 7, locking component; 71, tapered head; 711, tapered surface; 712, rod body; 72, extrusion rod; 73, extrusion piece; 731, sleeve ring; 732, abutting bolt; 733, trapezoidal block; 734, friction block; 74, spring; 75, rectangular frame;

[0036] 8, telescopic rod. DETAILED DESCRIPTION

[0037] In order for those skilled in the art to better understand the present application, the present application will be further described in detail below in conjunction with specific embodiments and accompanying drawings.

[0038] The terms used in the present application are those general terms currently widely used in the art in consideration of the functions about the present application, but the terms can be changed according to the intention of those skilled in the art, precedents, or new technologies in the art. In addition, specific terms can be selected by the applicant, and in this case, the detailed meanings thereof will be described in the detailed description of the present application. Therefore, the terms used in the specification should not be understood as simple names, but based on the meanings of the terms and the overall description of the present application.

[0039] Reference Figures 1-8 The present embodiment provides an oven with a conveniently adjusted slide rail mounting frame, which comprises frame bodies 2 symmetrically arranged on the left and right sides inside an oven cavity 1, each frame body 2 comprising a vertical guide rail 3 fixed to the inner side wall of the oven cavity 1, and the inner side wall of the vertical guide rail 3 is provided with a rack 31 extending in the vertical direction; at least one horizontal sliding assembly 4 is connected with the vertical guide rail 3 through an adjusting component 5 and a locking component 7; wherein the adjusting component 5 comprises: a hollow rotating rod 51 rotatable and axially movable through all horizontal sliding assemblies 4 on the same side, and the hollow rotating rod 51 is provided with a knob 52 at one end in front of the oven; a set of gear transmission assemblies 6 for converting the rotating motion of the hollow rotating rod 51 into the vertical movement of the horizontal sliding assembly 4 along the vertical guide rail 3; the locking component 7 is arranged inside the gear transmission assembly 6 and is driven by the axial movement of the hollow rotating rod 51 to selectively press or separate from the inner wall of the vertical guide rail 3.

[0040] In the present embodiment, the base of each side frame 2 is a vertical guide rail 3 which is fixedly installed on the inner side wall of the oven cavity 1 by means of screws or buckles, etc. The cross section of the vertical guide rail 3 is "concave", and the inner side wall of the vertical guide rail 3 is processed with a rack 31 which continuously extends in the vertical direction. The rack 31 is not used for power transmission, but provides a precise, scaled vertical guide rail 3 for the subsequent adjustment mechanism, ensuring that the position of the lifting movement is accurate and can be stopped at any height. The volume of the rack 31 is small and dense.

[0041] On the vertical guide rail 3, at least one transverse sliding assembly 4 is installed, which is a direct supporting component of the baking tray and is usually composed of a transverse outer guide rail 41 and a transverse inner guide rail 42 which is slidably nested therein. The transverse inner guide rail 42 can be pulled out from the oven opening to facilitate the taking and placing of food outside the oven. The corresponding transverse inner guide rails 42 on the left and right sides can be connected by a telescopic connecting rod 65 to ensure that the two sides of the guide rail move synchronously when pulled out, and at the same time enhance the stability.

[0042] The adjustment component 5 is used to realize smooth lifting, which includes a hollow rotating rod 51 which is horizontally arranged in the side cavity of all transverse outer guide rails 41 on the same side, and the other side cavity of the transverse outer guide rail 41 is provided with a slidable transverse inner guide rail 42. The hollow rotating rod 51 can rotate and axially slide a certain distance relative to the transverse outer guide rails 41, and the front end (located on the side of the oven door) is provided with a scaled knob 52 for user operation and observation of the adjustment amount. At the connection position of the hollow rotating rod 51 and each transverse sliding assembly 4, a set of gear transmission assembly 6 is arranged, which includes a first bevel gear 61 arranged on the hollow rotating rod 51, a second bevel gear 62 engaged with the first bevel gear 61, the second bevel gear 62 is fixed on a rotating cylinder 63, and the end of the rotating cylinder 63 is provided with a walking gear 64. In this way, when the user rotates the knob 52, the power is transmitted to each first bevel gear 61 through the hollow rotating rod 51, the first bevel gear 61 drives the second bevel gear 62 to rotate, thereby driving the walking gear 64 at the end of the rotating cylinder 63 to rotate. Since the walking gear 64 is engaged with the fixed rack 31 on the vertical guide rail 3, the rotational movement of the walking gear 64 is forced to convert into rolling along the rack 31, thereby driving the entire transverse sliding assembly 4 to move vertically along the vertical guide rail 3. Through the scale on the knob 52, the user can realize fine and stepless adjustment of the height of the sliding rail.

[0043] The locking component 7 ensures safety in use, which includes an axially movable conical head 71, a pair of radially expandable extrusion rods 72 and a spring 74 providing reset elastic force. After the height adjustment is completed, the user pushes the hollow rotating rod 51 into the oven, at this time, an extrusion piece 73 fixed on the hollow rotating rod 51 moves forward, pressing the conical head 71, the conical slope at the front end of the conical head 71 decomposes the force, forcing the two extrusion rods 72 in contact to expand to the radial sides of the rotating drum 63, and the expanded extrusion rods 72 are finally tightly pressed on the inner side wall of the vertical guide rail 3, and the rotating drum 63 and even the entire transverse sliding assembly 4 are firmly locked at the current height through the static friction force, at the same time, the support also firmly fixes the walking gear 64 at the gear position, and the walking gear 64 also shares part of the locking responsibility. When it is necessary to adjust again, the hollow rotating rod 51 is only pulled out, the extrusion piece 73 is separated from the conical head 71, the spring 74 pushes the conical head 71 back to the original position, the extrusion rods 72 are retracted after losing the support of the conical surface, the locking is automatically released, and the walking gear 64 can be freely rotated.

[0044] The present application integrates the height adjustment and mechanical locking functions in a single hollow rotating rod 51 operation, so that the user can easily complete the adjustment and fixation of the slide rail position through the consecutive actions of unlocking by pulling out the rod body 712, stepless height adjustment by rotating the knob 52, and locking by pushing in the rod body 712, and the operation process is extremely simple and intuitive. Thanks to the meshing transmission of the gear and the continuous rack 31 on the vertical guide rail 3, the adjustment process is smooth and stable, and precise stepless positioning can be achieved, which completely overcomes the limitations of the traditional fixed hole position spacing, and the oven interior space can be flexibly adapted to various height specifications of the oven. Further, the radial extrusion type locking mechanism driven by the axial movement of the hollow rotating rod 51 can greatly amplify the friction force through the conical surface structure when the rod body 712 is pushed in, so as to firmly lock the sliding assembly at any position of the vertical guide rail 3. This pure mechanical self-locking mode ensures that the slide rail system can maintain high stability and safety even when the oven is working or carrying heavy objects, and fundamentally eliminates the risk of accidental sliding.

[0045] Specifically, the transverse sliding assembly 4 includes a transverse outer guide rail 41 connected with the gear transmission assembly 6 and a transverse inner guide rail 42 slidably sleeved in the transverse outer guide rail 41. The inner ends of the corresponding transverse inner guide rails 42 on the left and right sides are connected through an expansion rod 8.

[0046] The transverse sliding assembly 4 is mainly composed of a transverse outer rail 41 and a transverse inner rail 42. The transverse outer rail 41 is designed in a structure with two independent cavities on the left and right sides. The design of the two independent cavities realizes functional isolation: one cavity is used to accommodate and fix the hollow rotating rod 51 and the gear transmission assembly 6, ensuring the stable operation of the adjusting mechanism without interference; the other cavity constitutes a sliding channel of the sliding rail, and a plurality of balls are arranged in the cavity, and the transverse inner rail 42 is slidably nested in the cavity. The support structure with balls can convert traditional sliding friction into rolling friction, so that the user feels more convenient and smooth when pulling out the baking tray.

[0047] The transverse inner rail 42 is designed in a U-shaped structure with an open side. This design ensures that the rail itself has sufficient structural strength to bear weight, and the lateral opening provides a convenient interface for connecting with the telescopic rod 8 and facilitates the placement of the baking tray.

[0048] In order to realize the synchronous adjustment of the left and right side frame bodies 2 and enhance the overall stability, the inner ends (i.e. the ends located in the deep part of the oven) of the corresponding transverse inner rails 42 on the left and right sides are connected by a telescopic rod 8. The specific structure of the telescopic rod 8 includes two outer screws and an inner sleeve. One end of each outer screw is machined with an outer thread in the opposite direction, and the other end is fixed with a convex-shaped abutting block. The U-shaped opening of the transverse inner rail 42 is matched and inserted with the convex-shaped abutting block. During assembly, the convex head of the abutting block is inserted from the side into the U-shaped opening of the rail and rotated by a certain angle, so that the abutting block is clamped inside the rail, realizing the quick, firm and fast connection between the telescopic rod 8 and the transverse inner rail 42 without additional fasteners. The inner sleeve is machined with internal threads that match the threads on the two outer screws. By rotating the inner sleeve in the forward or reverse direction, the two outer screws can be driven to move synchronously towards each other (contract) or move in the opposite direction (expand), thereby accurately adjusting the total length of the telescopic rod 8.

[0049] The telescopic rod 8 connecting the left and right frame bodies 2 ensures that the sliding rails on both sides of the oven always remain at the same height, realizing synchronous lifting and avoiding the tilting of the baking tray caused by the difference in height between the two sides. At the same time, the telescopic rod 8 structure also enhances the rigidity of the entire sliding rail mounting frame in the horizontal plane, effectively suppressing the shaking that may occur when pulling out the baking tray, and improving the overall stability and user experience.

[0050] Specifically, the gear transmission assembly 6 comprises a first bevel gear 61 fixedly sleeved on the hollow rotating rod 51, a second bevel gear 62 engaged with the first bevel gear 61, and a rotating drum 63 coaxially fixedly connected with one end of the second bevel gear 62, and the other end of the rotating drum 63 is provided with a walking gear 64 engaged with the rack 31 of the vertical guide rail 3. The first bevel gear 61 and the hollow rotating rod 51 are matched by a key and a key groove, the first bevel gear 61 and the second bevel gear 62 are fixed by a connecting rod 65, and the connecting rod 65 is connected with the first bevel gear 61 and the second bevel gear 62 by bearings at both ends.

[0051] The gear transmission assembly 6 mainly comprises the first bevel gear 61, the second bevel gear 62, the rotating drum 63 and the walking gear 64, wherein the first bevel gear 61 is sleeved on the hollow rotating rod 51, in order to realize reliable power transmission, the first bevel gear 61 and the hollow rotating rod 51 are matched by a key and a key groove, which means that a key groove is machined on the axial surface of the hollow rotating rod 51, and a matching key is arranged in the inner hole of the first bevel gear 61, this matching ensures that when the operator rotates the hollow rotating rod 51, the torque can be transmitted to the first bevel gear 61 synchronously without loss, avoiding the possible slipping phenomenon, and ensuring the accuracy and reliability of transmission. The second bevel gear 62 is perpendicularly engaged with the first bevel gear 61 at a 90-degree angle, and this bevel gear pair changes the horizontal rotating motion of the hollow rotating rod 51 by 90 degrees, and converts it into the vertical rotating motion of the rotating drum 63, one end of the rotating drum 63 is coaxially fixedly connected with the second bevel gear 62 by means of screws or interference fit, so as to ensure that they rotate synchronously as a whole, and the other end of the rotating drum 63 is fixedly installed with the walking gear 64.

[0052] The support of the second bevel gear 62 is provided with a connecting rod 65 in addition to the fixing of the rotating drum 63 on the transverse outer guide rail 41 through a bearing, which overcomes the axial and radial force generated when the bevel gears mesh, prevents the gears from being dislocated or disengaged due to force, and connects the two ends of the connecting rod 65 to the first bevel gear 61 and the second bevel gear 62 through bearings. It needs to be particularly pointed out that "connection" here is not only "fixing", but also "supporting". The connecting rod 65 and the two bearings together form a stable support frame. The connection ensures that the center distance between the first bevel gear 61 and the second bevel gear 62 remains unchanged, which is the premise of correct meshing of the gears. In addition to avoiding the first bevel gear 61 from being driven to disengage from the meshing with the second bevel gear 62 when the hollow rotating rod 51 moves, the connecting rod 65 provides a stable support point for the second bevel gear 62 through the bearing when it is driven by the first bevel gear 61, effectively balances the torque generated by the meshing, prevents the entire gear transmission from shaking or deforming, and provides a counter-torque support. Due to the existence of the connecting rod 65 and the bearings, the entire gear transmission is constrained in a rigid frame, which makes the transmission process more stable, can withstand greater load, and significantly reduces noise and wear caused by gear shaking, thereby improving the service life and operation feel of the entire adjusting mechanism. Finally, the rotating movement of the rotating drum 63 drives the walking gear 64 at the end thereof to roll along the fixed rack 31 on the vertical guide rail 3, thereby driving the entire transverse sliding assembly 4 to move up and down smoothly.

[0053] Specifically, the locking component 7 includes a tapered head 71 axially movably arranged in the rotating drum 63, a pair of extrusion rods 72 radially movably arranged at the end of the rotating drum 63, and an extrusion piece 73 fixedly arranged on the hollow rotating rod 51, which can push against or disengage from the tapered head 71 when the hollow rotating rod 51 moves axially. The end of the rotating drum 63 is connected with a rectangular frame 75 through a bearing, and the pair of extrusion rods 72 are symmetrically and slidably arranged in the rectangular frame 75, wherein each extrusion rod 72 is in key groove cooperation with the tapered head 71. The extrusion piece 73 includes a sleeve ring 731 arranged on the outer wall of the hollow rotating rod 51, a clamping bolt 732 arranged on the sleeve ring 731, a trapezoidal block 733 arranged on the outer side wall of the sleeve ring 731 and matched with the tapered head 71, and a friction block 734 arranged on the other side of the outer side wall of the sleeve ring 731 and matched with the inner cavity of the transverse outer guide rail 41. The tapered head 71 includes a tapered platform 711 and a rod body 712 fixedly connected to the tapered platform 711, and a spring 74 arranged between the outer wall of the rod body 712 and the inner wall of the rotating drum 63 for resetting the tapered head 71.

[0054] The locking component 7 mainly comprises a tapered head 71, a pair of extrusion rods 72 and an extrusion piece 73 fixed on the hollow rotating rod 51. The tapered head 71 is located inside the rotating drum 63 and is composed of a tapered surface 711 and a rod body 712 fixedly connected to the tapered surface 711. The tapered head 71 can move along the axial direction of the rotating drum 63. The rod body 712 is fixed to the inner wall of the rotating drum 63 through a limiting ring, a support rod and a bearing. The rod body 712 moves along the axial direction of the limiting ring. The limiting ring is fixed to the inner side of the bearing arranged on the inner wall of the rotating drum 63 through the support rod. Thus, the rod body 712 is independent and fixed. A spring 74 is arranged between the outer wall of the rod body 712 and the inner wall of the rotating drum 63. The spring 74 always applies a pushing force to the tapered head 71 towards the transverse outer guide rail 41. This is the natural reset state of the tapered head 71.

[0055] The pair of extrusion rods 72 are symmetrically arranged at the end of the rotating drum 63 and can slide radially. The end of the rotating drum 63 is connected to a rectangular frame 75 through a bearing. The pair of extrusion rods 72 are installed in the rectangular frame 75. The inner side end of each extrusion rod 72 is connected to the inclined surface of the tapered surface 711 of the tapered head 71 through the cooperation of a key and a key groove. This means that the radial movement of the extrusion rod 72 is strictly constrained and can only be driven by the axial movement of the tapered head 71. When the tapered head 71 moves inward (towards the inside of the oven), the inclined surface of the tapered surface 711 will force the pair of extrusion rods 72 to expand synchronously along the radial direction of the rectangular frame 75. When the tapered head 71 is reset outward under the action of the spring 74, the extrusion rod 72 will contract radially.

[0056] The extrusion piece 73 is fixedly installed on the hollow rotating rod 51 and moves axially with it. The extrusion piece 73 specifically comprises a sleeve ring 731 arranged outside the hollow rotating rod 51. The sleeve ring 731 is fixed to the outer wall of the hollow rotating rod 51 through a pressing bolt 732. A trapezoidal block 733 is fixedly connected to the outer side wall of the sleeve ring 731. The trapezoidal block 733 is inserted into the free end of the rod body 712 of the tapered head 71 through an inclined surface. One of the bottom surfaces is used to abut against the rod body 712 to prevent the reset of the tapered head 71, thereby locking the positions of the extrusion rod 72 and the walking gear 64. At the same time, the reset force of the tapered head 71 will push the trapezoidal block 733 to extrude the sleeve ring 731, and the sleeve ring 731 will extrude the friction block 734 on the other side, thereby increasing the effect of the friction block 734. The friction block 734 is arranged on the other side of the outer side wall of the sleeve ring 731 relative to the trapezoidal block 733 and is in contact with the inner cavity wall of the transverse outer guide rail 41. This design makes the hollow rotating rod 51 need to overcome a certain friction force between the friction block 734 and the inner wall of the transverse outer guide rail 41 when being pulled out or pushed in. This friction force provides a clear sense of segmentation for operation and keeps the hollow rotating rod 51 in the position in the non-operation state, thereby locking the position of the extension and contraction of the hollow rotating rod 51.

[0057] Specifically, a plurality of limiting rings 411 are sequentially arranged in the inner cavity of the transverse outer guide rail 41 along the length direction thereof, the hollow rotating rod 51 is arranged in each limiting ring 411, and the rotating knob 52 is provided with a scale mark.

[0058] In the inner cavity of the transverse outer guide rail 41, a plurality of limiting rings 411 are fixedly arranged at intervals along the length direction thereof, and the hollow rotating rod 51 is sequentially arranged in the inner holes of the limiting rings 411. The limiting rings 411 provide a plurality of auxiliary support points along the length direction of the elongated hollow rotating rod 51. Since the hollow rotating rod 51 needs to transmit torque to realize lifting, the support of the hollow rotating rod 51 is changed from simple support at both ends to continuous support at multiple points by arranging the plurality of limiting rings 411, which greatly enhances the bending stiffness and stability during rotation of the rotating rod. This structure can effectively inhibit the deformation and shaking of the rotating rod that may occur under stress, so as to ensure that the rotating axis of the rotating rod always remains at a predetermined position, thereby ensuring that the first bevel gear 61 and the second bevel gear 62 fixed thereon always maintain an accurate meshing relationship, reducing wear, abnormal sound and transmission efficiency loss caused by the position deviation of the gear transmission assembly 6, and improving the reliability and service life of the entire adjustment system.

[0059] In addition, a scale mark is arranged on the end face of the rotating knob 52 located outside the oven, and the scale mark and the internal gear and rack 31 transmission constitute an intuitive position indication. The working principle is based on the accuracy of the transmission system. Since the walking gear 64 is engaged with the rack 31 on the vertical guide rail 3, and the pitch of the rack 31 is fixed, the walking gear 64 rolls over a certain number of teeth every time the rotating knob 52 (i.e., the hollow rotating rod 51) rotates a fixed angle, and the entire slide rail assembly also produces a certain, calculable vertical displacement. The scale mark visualizes and quantifies this abstract rotation angle. When adjusting, the user can observe the change of the scale on the rotating knob 52 relative to a certain reference point to predict and accurately control the lifting height of the slide rail. For example, each scale may correspond to a one-millimeter increase or decrease in the height of the slide rail, which enables the user to achieve precise and repeatable height preset without repeatedly pulling the slide rail for visual comparison, greatly improving the convenience and professionalism of the operation, especially for quick and accurate positioning according to the height of commonly used baking utensils.

[0060] Referring Figures 1-8 The adjustment and locking work flow of the oven slide rail mounting frame of the present application can be divided into three consecutive steps: 1. unlocking preparation; 2. height adjustment; and 3. locking and fixing.

[0061] First step: unlock preparation, when the user needs to adjust the height of the slide rail, first hold and pull out the knobs 52 on the same height of the left and right side frame 2 and their connected hollow rotating rod 51 to the outside (i.e. towards the direction of the oven door). This operation contains three simultaneous mechanical actions: the hollow rotating rod 51 moves axially outward, the extrusion piece 73 (sleeve 731 and trapezoidal block 733) fixed on it is separated from the rod body 712 of the cone head 71, and the lock is released; the cone head 71 moves outward under the restoring force of the spring 74, its tapered surface no longer exerts radial expansion force on the pair of extrusion rods 72, and the extrusion rods 72 shrink inward under constraint, so that their outer end surface is separated from the inner wall of the vertical guide rail 3, and the forced locking state between the walking gear 64 and the rack 31 is released; the hollow rotating rod 51 moves outward, so that the knob 52 is away from the front of the oven cavity 1, leaving enough space for rotation operation, avoiding collision with the oven door frame, and avoiding operation interference; in this process, the friction block 734 on the extrusion piece 73 slides relative to the inner wall of the horizontal outer guide rail 41, providing a clear damping feeling and paragraph feeling for the user, clearly indicating that the mechanism has entered the adjustable state, and providing an operation feeling.

[0062] Second step: height adjustment, when the hollow rotating rod 51 is in the unlocked state of being pulled out, the user rotates the knob 52 on either side, and the rotation is transmitted to all first bevel gears 61 fixed on the hollow rotating rod 51 (synchronous rotation is ensured through key groove cooperation), the first bevel gear 61 drives the second bevel gear 62 vertically engaged with it to rotate, the second bevel gear 62 drives the rotating cylinder 63 fixed coaxially with it to rotate, and finally makes the walking gear 64 installed at the end of the rotating cylinder 63 rotate. Since the walking gear 64 is engaged with the vertical guide rail 3 rack 31 fixed on the side wall of the oven, the rotation of the walking gear 64 is converted into rolling along the rack 31, thereby driving the entire horizontal sliding assembly 4 (including the horizontal outer guide rail 41 and the horizontal inner guide rail 42) to stably ascend or descend along the vertical guide rail 3. The user can accurately control the lifting distance of the slide rail by observing the scale mark on the knob 52. Since the corresponding horizontal inner guide rails 42 on the left and right sides are rigidly connected through the extension rod 8, the height of the slide rail on both sides is adjusted simultaneously and synchronously, i.e. the same angle or number of turns of the knob is rotated, so that the horizontal sliding assemblies 4 on both sides can realize completely synchronous ascending and descending motion under the cooperation of the extension rod 8, ensuring that the baking tray is always in a horizontal state.

[0063] Third step: locking, when the slide rail is moved to the desired height, the user pushes the hollow rotating rod 51 into the original position inside the oven, which triggers a series of mechanical actions again: the hollow rotating rod 51 moves inward, driving the extrusion piece 73 on it to move inward synchronously, the trapezoidal block 733 at the front end of the extrusion piece 73 abuts against the end of the rod body 712 of the taper head 71, pushing the taper head 71 to move inward against the force of the spring 74 and triggering the lock; the taper head 71 moves inward with the taper 711 part, which drives a pair of extrusion rods 72 that fit with the key groove to expand synchronously to the two sides in the radial direction under the constraint of the rectangular frame 75. The outer end face of the extrusion rod 72 is finally tightly pressed against the closed inner wall of the vertical guide rail 3 to perform locking; the reaction force generated by the expansion and pressing of the extrusion rod 72 is completely transmitted to the walking gear 64 through the rotating drum 63, forcing the teeth of the walking gear 64 to generate a large positive pressure with the tooth groove side of the vertical guide rail 3 rack 31, thereby forming a strong static friction force (and mechanical interlocking effect) to achieve load locking. This force is the main constraint force against the gravity of the slide rail and its load, achieving reliable mechanical self-locking. At this time, even in the case of oven working vibration or full load, the slide rail is firmly locked in the current position.

[0064] The entire working process is completed through three intuitive steps of "pulling, rotating, and pushing", which converts the complex internal mechanical transmission and locking process into extremely simple user operations, finally realizing safe, precise, and convenient stepless adjustment and fixation of the oven slide rail mounting frame.

[0065] Finally, it should be pointed out that the methods and devices described in detail above are only embodiments, and those skilled in the art can modify these embodiments in different ways without departing from the scope of the present application.

Claims

1. An oven with a conveniently adjustable slide rail mounting rack, characterized by: The rack (2) is symmetrically arranged inside the oven cavity (1) left and right, each rack (2) includes a vertical guide rail (3) fixed to the inner wall of the oven cavity (1), the inner wall of the vertical guide rail (3) is provided with a vertical rack (31); At least one transverse sliding assembly (4) is connected with the vertical guide rail (3) through an adjusting component (5) and a locking component (7); The adjusting component (5) includes a hollow rotating shaft (51) which is rotatable and axially movable through all transverse sliding assemblies (4) on the same side, and a knob (52) is arranged at one end of the hollow rotating shaft (51) in front of the oven. A set of gear transmission assemblies (6) are used to convert the rotating motion of the hollow rotating shaft (51) into the vertical movement of the transverse sliding assembly (4) along the vertical guide rail (3). The locking component (7) is arranged inside the gear transmission assembly (6) and is driven by the axial movement of the hollow rotating shaft (51) to selectively press or separate from the inner wall of the vertical guide rail (3), the gear transmission assembly (6) includes a first bevel gear (61) fixedly sleeved on the hollow rotating shaft (51), a second bevel gear (62) meshing with the first bevel gear (61), and a rotating cylinder (63) coaxially fixedly connected with one end of the second bevel gear (62), the other end of the rotating cylinder (63) is provided with a walking gear (64) meshing with the rack (31) of the vertical guide rail (3), the locking component (7) includes a tapered head (71) axially movably arranged in the rotating cylinder (63); a pair of extrusion rods (72) radially movably arranged at the end of the rotating cylinder (63); a extrusion piece (73) is fixedly arranged on the hollow rotating shaft (51), when the hollow rotating shaft (51) moves axially, the extrusion piece (73) can push or separate from the tapered head (71), the end of the rotating cylinder (63) is connected with a rectangular frame (75) through a bearing, a pair of extrusion rods (72) are symmetrically arranged in the rectangular frame (75), and a key groove is formed between each extrusion rod (72) and the tapered head (71).

2. The oven with the easily adjustable slide rail mounting rack of claim 1, wherein: The transverse sliding assembly (4) includes a transverse outer guide rail (41) connected with the gear transmission assembly (6) and a transverse inner guide rail (42) slidably sleeved in the transverse outer guide rail (41).

3. The oven of claim 2, wherein: The inner ends of the corresponding transverse inner guide rails (42) on the left and right sides are connected through a telescopic rod (8).

4. The oven of claim 2, wherein: The first bevel gear (61) and the hollow rotating shaft (51) are connected through a key and a key groove, The first bevel gear (61) and the second bevel gear (62) are fixed through a connecting rod (65), and the two ends of the connecting rod (65) are connected with the first bevel gear (61) and the second bevel gear (62) through bearings respectively.

5. The oven of claim 4, wherein: The taper head (71) comprises a frustum (711) and a rod body (712) fixedly connected to the frustum (711), and a spring (74) for resetting the taper head (71) is arranged between the outer wall of the rod body (712) and the inner wall of the rotating drum (63).

6. The oven with the easily adjustable slide rail mounting rack of claim 2, wherein: A plurality of limiting rings (411) are sequentially arranged in the inner cavity of the lateral outer guide rail (41) along the length direction thereof, and the hollow rotating rod (51) is arranged in each limiting ring (411), A scale mark is arranged on the knob (52).

7. The oven with the easily adjustable slide rail mounting rack of claim 4, wherein: The extrusion piece (73) comprises a sleeve ring (731) arranged on the outer wall of the hollow rotating rod (51), a pressing bolt (732) is arranged on the sleeve ring (731), a trapezoidal block (733) is arranged on the outer side wall of the sleeve ring (731), the trapezoidal block (733) is matched with the taper head (71), a friction block (734) is arranged on the other side of the sleeve ring (731) relative to the trapezoidal block (733), and the friction block (734) is matched with the inner cavity of the lateral outer guide rail (41).

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