Turnover device for driving opening and closing of top cover of cooking all-in-one machine

Abstract

This invention relates to the field of cooking equipment technology, and discloses a flipping device for driving the opening and closing of the top cover of a cooking appliance. The flipping device consists of a drive motor, a worm gear transmission mechanism, and a connecting block. The drive motor is mounted on the frame of the cooking appliance, and the connecting block is fixed to the inner rear edge of the top cover. The drive motor and the connecting block are connected through the worm gear transmission mechanism. As the drive motor rotates in the forward or reverse direction, the top cover flips upward from a horizontal state to open or flips downward from a vertical state to close. The flipping device of this invention achieves intelligent control while having the advantages of high safety, good stability, and compact structure.

Description

Technical Field

[0001] This invention relates to the field of cooking equipment technology, and in particular to a flipping device for driving the opening and closing of the top cover of a cooking appliance. Background Technology

[0002] Nowadays, competition in the cooking equipment industry is becoming increasingly fierce. Humanized and intelligent design has become a development trend in recent years. Such design has made cooking equipment more closely integrated with consumers' lives, bringing convenience to their daily lives.

[0003] Most cooking appliances on the market require manual opening of the lid. For large cooking appliances, such as combination cookers (including pots, pans, and ovens), these models usually have heavy lids, and the following problems arise when opening the lid:

[0004] 1. Manual operation requires considerable strength, which increases the physical exertion for children, the elderly, and other groups when operating the cooking machine.

[0005] 2. The top cover needs to be supported after it is opened. The existing support mechanism is complex and may require manual operation, and the support mechanism affects the appearance. Summary of the Invention

[0006] The technical problem solved by this invention is to provide a flipping device for driving the opening and closing of the top cover of a cooking appliance that is highly safe, stable, reliable, labor-saving, and intelligently controlled.

[0007] To solve the above-mentioned technical problems, the present invention provides a flipping device for driving the opening and closing of the top cover of a cooking appliance. The flipping device consists of a drive motor, a worm gear transmission mechanism and a connecting block. The drive motor is mounted on the frame of the cooking appliance, and the connecting block is fixed to the rear inner edge of the top cover. The drive motor and the connecting block are connected through the worm gear transmission mechanism. As the drive motor rotates in the forward or reverse direction, the top cover flips upward from a horizontal state to open or flips downward from a vertical state to close.

[0008] Preferably, the worm gear transmission mechanism includes a worm gear, a worm, and a support frame. The support frame is an integral structure with an inner cavity, formed by an upper frame plate, a left frame plate, a bottom frame plate, and a right frame plate. The bottom frame plate is fixed to a positioning base plate extending forward from the upper crossbeam at the rear of the frame. The first end of the worm gear shaft is placed in the left shaft hole of the left frame plate, and the second end of the worm gear shaft extends to the right through the right frame plate. The worm gear is placed in the inner cavity. The upper end of the worm shaft is placed in the upper shaft hole of the upper frame plate, and the lower end of the worm shaft extends downward through the bottom frame plate. The worm is placed vertically in the inner cavity and meshes with the worm gear.

[0009] Preferably, the lower end of the worm shaft passes through the positioning plate and is coaxially connected to the output shaft of the drive motor fixed on the positioning plate.

[0010] Preferably, the drive motor is a vertical motor, and a mounting plate is provided between the upper crossbeam and the middle crossbeam. The motor body is fixed to the mounting plate by a clamping component that ensures the output shaft remains vertical.

[0011] Preferably, the second end of the worm gear shaft is fixedly connected to the left side of the connecting block. A mounting bracket for supporting the connecting block is provided on the positioning base plate on the right side of the connecting block. The mounting bracket is an integral component. The mounting bracket has a base and a first shaft support plate. The base is fixed on the positioning base plate. The first shaft support plate is vertically arranged on the base. A locking shaft coaxial with the worm gear shaft is provided in the first through hole of the first shaft support plate. The right side of the connecting block is fixedly connected to the transmission end of the locking shaft.

[0012] Preferably, a retaining plate is provided at both the second end and the transmission end, and a recess is provided on the left and right sides of the connecting block for embedding the retaining plate. The recess has the same shape as the retaining plate, and the retaining plate and the recess are locked together by screws.

[0013] Preferably, a mounting bracket for supporting the connecting block is provided on the positioning base plate on the right side of the connecting block. The mounting bracket is an integral component, and the mounting bracket has a base and a first shaft support plate. The base is fixed on the positioning base plate, and the first shaft support plate is vertically arranged on the base. The second end of the worm gear shaft extends into an extension shaft, which is divided into an initial section, a middle section, and a tail section. A horizontal shaft channel is provided on the connecting block. The middle section is placed in the shaft channel and is in an interlocking state. The tail section passes through the first through hole on the first shaft support plate to support the connecting block between the right support plate and the first shaft support plate.

[0014] Preferably, the flipping device further includes a locking mechanism for locking the top cover in a set position. The locking mechanism includes a driving part and a snap-fit ​​part. A second shaft frame plate is vertically provided on the base on the right side of the first shaft frame plate. A second through hole is provided on the second shaft frame plate, which is coaxial with the first through hole. The driving part is fixed to the base and placed on the right side of the second shaft frame plate. The snap-fit ​​part is retractably placed in the second through hole. When the top cover is flipped to the open state under the action of the drive motor, the snap-fit ​​part pops out and engages with the snap-fit ​​end of the locking shaft or the tail section of the extended shaft.

[0015] Preferably, the driving part is a push-pull electromagnet, which includes an electromagnetic coil and an iron core inserted into the electromagnetic coil, and the locking part is a locking tongue connected to the outer end of the iron core.

[0016] Preferably, the drive motor and the worm gear transmission mechanism are both hidden under the top plate of the cooking appliance for mounting the pot and the stove, and are located in the gap between the rear side plate of the cooking appliance and the pot, or in the gap between the rear side plate of the cooking appliance and the stove. The top plate is provided with a mounting position that allows the connecting block to be freely rotated.

[0017] This invention utilizes a flipping device, consisting of a drive motor, a worm gear transmission mechanism, and a connecting block mounted on the top cover of the cooking appliance, to automatically open and close the top cover. This device offers good driving stability and a simple structure. Furthermore, a locking mechanism ensures the top cover is locked in a designated position, enhancing safety. The invention further conceals this flipping device within the top plate of the cooking appliance, used for mounting the cookware and stove, within the gap between the rear panel of the cooking appliance and the cookware, or within the gap between the rear panel of the cooking appliance and the stove. This fully utilizes the space within the cooking appliance while maintaining its aesthetically pleasing appearance. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the frame and flipping device of the integrated cooking machine in this invention;

[0019] Figure 2 This is a schematic diagram of the disassembled structure of the cooking appliance frame and the flipping device in this invention;

[0020] Figure 3 This is an exploded view of the flipping device in this invention;

[0021] Figure 4 This is a structural diagram of the support frame in this invention;

[0022] Figure 5 This is a structural diagram of the mounting bracket in this invention;

[0023] Figure 6 This is a schematic diagram of another embodiment of the connection between the worm gear shaft and the connecting block in this invention;

[0024] Figure 7 This is a schematic diagram of the connecting block in this invention;

[0025] Figure 8 This is one embodiment of the locking tongue of the locking mechanism in this invention;

[0026] Figure 9 This is another embodiment of the locking tongue of the locking mechanism in this invention;

[0027] Figure 10 This is a schematic diagram of the integrated cooking appliance of the present invention.

[0028] The diagram is labeled as follows: worm gear transmission mechanism 1, worm gear 11, worm gear shaft 111a, first end 112a, second end 113a, clamping plate 1131, axial channel 114, worm gear shaft 111b, second end 113b, initial section 114b, middle section 115b, tail section 116b, worm 12, worm shaft 121, upper end 122, lower end 123, support frame 13, upper frame plate 131, upper shaft hole 1311, left frame plate 132, left shaft hole 1321, base frame plate 133, lower shaft hole 1131, mounting part 1332, fixed mounting part 1333, right frame plate 134, right shaft hole 1341, bearing 14, vertical motor 2, output shaft 21, upper end face 22, clamping component 23, first 231, 232, 24, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 4 ...5, 5, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 8, 7, 8, 8, 8, 8, 8, 8, 8, 8, 9, 8, 8, 9, 8, 8, 8, 8, 9, 8, 8, 9, 8, 8, 9, 8, 8, 9, 8, 9, 8, 9, 8, 9, 8, 9, 8, 9, 8, 9, 8, 9, 8, 9, 8, 9, 8, 9, 8, 9, 8, 9, 9, 8, 9, 9, 8, 9, 9, 9, 1, 9, 1, 2, 9, 1, 9, 1, 2, 9, 1 Detailed Implementation

[0029] The present invention provides a flipping device for opening and closing the top cover 5 of a cooking appliance. This device achieves automatic opening or closing of the top cover 5 of the cooking appliance through a drive motor, a worm gear transmission mechanism 1, and a connecting block 3. (After opening the top cover 1, various cookware 81 and / or stoves 82 installed in the cooking appliance can be operated; closing it covers the various cookware 81 and / or stoves 82 and their corresponding operating interfaces.) At the same time, the drive motor and the worm gear transmission mechanism 1 are installed in the gaps between the various components of the cooking appliance, making reasonable use of the internal space of the cooking appliance while improving the intelligence level of the cooking appliance.

[0030] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples.

[0031] like Figure 1-3 As shown, the flipping device consists of a worm gear transmission mechanism 1, a drive motor, and a connecting block 3 that is fixedly connected to the top cover 5 of the cooking appliance.

[0032] 1. Worm gear transmission mechanism

[0033] The worm gear transmission mechanism 1 serves to connect the drive motor and the connecting block 3, and to transmit the output torque of the drive motor to the connecting block 3.

[0034] The worm gear transmission mechanism 1 includes a worm gear 11, a worm 12, and a support frame 13.

[0035] 1) Support frame 13

[0036] like Figure 3-4 As shown, the support frame 13 is used to support and position the worm gear 11 and the worm 12. The support frame 13 is an integral structure with an internal cavity, formed by an upper frame plate 131, a left frame plate 132, a bottom frame plate 133, and a right frame plate 134 (in this invention, front, back, left, right, upper, and lower refer to...). Figure 1 (For reference on paper, the same below) The support frame 13 can be made of high-strength materials such as aluminum alloy, stainless steel, and zinc alloy. Specifically, the vertical cross-sectional shape of the inner cavity is square. An upper shaft hole 1311 is provided on the front side of the upper frame plate 131, a lower shaft hole 1131 coaxial with the upper shaft hole 1311 is provided on the bottom frame plate 133, a left shaft hole 1321 is provided on the rear side of the left frame plate 132, and a right shaft hole 1341 coaxial with the left shaft hole 1321 is provided on the right frame plate 134.

[0037] An upper crossbeam 41 and a middle crossbeam 42 are respectively provided on the rear side of the frame 4 of the cooking appliance. Both the upper crossbeam 41 and the middle crossbeam 42 are made of aluminum profiles. The upper crossbeam 41 extends forward to form a positioning base plate 411 for mounting the support frame 13.

[0038] Mounting portions 1332 extend horizontally from both the left and right sides of the base plate 133. The mounting portions 1332 are fixed to the positioning base plate 411 by screws to mount the support frame 13 onto the positioning base plate 411. Furthermore, to facilitate the positioning and installation of the support frame 13, a mounting portion 1333 is bent downward vertically on the front side of the base plate 133. During installation, the base plate 133 is first snapped onto the positioning base plate 411 to achieve positioning of the base plate 133 and the positioning base plate 411 in the front-back direction.

[0039] Preferably, for ease of assembly and observation, the front and rear sides of the support frame 13 are open.

[0040] 2) Worm Gear 11

[0041] The first end 112a of the worm gear shaft 111a of the worm gear 11 is placed in the left shaft hole 1321 of the left frame plate 132, and the second end 113a of the worm gear shaft 111a extends to the right through the right frame plate 134. The worm gear 11 is placed in the inner cavity, and has the following two structures:

[0042] The first type: The worm gear and worm gear shaft are an integral structure (not shown in the figure). In this case, the diameter of the right shaft hole 1341 is larger than the diameter of the worm gear. The first end of the worm gear shaft and the worm gear both pass through the right shaft hole 1341. The first end overlaps in the left shaft hole. The worm gear is placed in the inner cavity. Bearings are provided in both the left shaft hole 1321 and the right shaft hole 1341. The inner ring of the bearing is interference-fitted with the worm gear shaft. Since the diameter of the right shaft hole 1341 is much larger than the diameter of the worm gear, it is necessary to cooperate with other structures to install the bearing in the right shaft hole 1341. For example, a ring is fitted on the outer ring of the bearing so that the outer ring of the ring is embedded in the right shaft hole 1341, thereby ensuring that the worm gear shaft and the left shaft hole 1321 are coaxially set.

[0043] The advantages of this structure are that by integrally molding the worm gear 11 and the worm gear shaft 111a, the virtual connection between the worm gear 11 and the worm gear shaft 111a during transmission can be avoided, which would lead to loss of transmission force and thus reduce transmission efficiency.

[0044] The second type: such as Figure 3 As shown, the worm gear 11 and the worm gear shaft 111a are two independent components. At this time, the left shaft hole 1321 and the right shaft hole 1341 are the same size and larger than the diameter of the worm gear shaft 111a. The first end 112a of the worm gear shaft 111a passes through the right shaft hole 1341 and the axial channel 114 of the worm gear 11 in sequence and overlaps the left shaft hole 1321 to fix the worm gear 11 and the worm gear shaft 111a together. The fixing method can be screw locking or pin locking, so as to place the worm gear 11 in the inner cavity. Furthermore, a bearing 14 is provided in both the left shaft hole 1321 and the right shaft hole 1341, and the diameter of the left shaft hole 1321 and the right shaft hole 1341 is adapted to the outer ring diameter of the bearing 14.

[0045] The advantages of this structure are: firstly, the small diameters of the left shaft hole 1321 and the right shaft hole 1341 save space and enhance the strength of the left support plate 132 and the right support plate 134; secondly, the same size of the left shaft hole 1321 and the right shaft hole 1341 facilitates the processing of the support frame 13 and the installation of the worm gear shaft 111a.

[0046] 3) Worm Gear 12

[0047] The upper end 122 of the worm shaft 121 of the worm 12 is placed in the upper shaft hole 1311 of the upper frame plate 131, and the lower end 123 of the worm shaft 121 extends downward through the base plate 133. The worm 12 is placed vertically in the inner cavity and meshes with the worm wheel 11.

[0048] There are two structural relationships between the worm 12 and the worm shaft 121. One is that the worm 12 and the worm shaft 121 are an integral structure. The other is that the worm 12 is provided with an axial channel 114, and the worm shaft 121 passes through the worm 12 and is fixed to it. The installation method and advantages of these two structures on the support frame 13 are the same as those of the worm wheel 11, and will not be repeated here.

[0049] The preferred parameters of the worm gear 11, worm 12, and support frame 13 in this invention are as follows:

[0050] The worm gear 11 has 13 teeth, an outer diameter of 25 mm, and a thickness of 10 mm. The worm 12 has a module of 1.5, a pitch circle diameter of 16.5 mm, a diameter coefficient of 11, and a length of 28 mm. The transmission ratio of the worm gear is 1:13. The rated speed of the drive motor is 50 rpm, and its output torque is 2.6 NM. The total weight of the top cover 5 is 11 kg. The height of the left frame plate 132 and the right frame plate 134 is 46 mm, and the thickness of the left frame plate 132 and the right frame plate 134 is 16 mm. The distance between the inner sides of the left frame plate 132 and the right frame plate 134 is 25 mm. The length of the bottom frame plate 133 in the left-right direction is 81 mm, the width of the bottom frame plate 133 in the front-back direction is 55 mm, and the thickness of the bottom frame plate 133 is 20 mm.

[0051] The worm gear transmission mechanism 1 of the present invention can transmit the load of the top cover 5 to the positioning base plate 411 through the support frame 13 while performing the transmission function, and then transmit it to the frame 4 through the positioning base plate 411, so that the frame is subjected to uniform force. The worm gear transmission mechanism 1 has the advantages of simple structure, small size, small space occupation in the cooking appliance, and stable transmission of driving force.

[0052] 2. Drive motor

[0053] The drive motor is mounted on the frame 4 of the cooking appliance. Specifically, the drive motor is fixed to the lower surface 4111 of the positioning base plate 411, and the lower end 123 of the worm shaft 121 passes through the positioning base plate 411 and is coaxially connected to the output shaft 21 of the drive motor.

[0054] The drive motor can be a horizontal motor or a vertical motor 2. To save space, the drive motor of the present invention is preferably a vertical motor 2. The vertical motor 2 is vertically hung on the lower surface 4111 of the positioning base plate 411 by a fixing frame 24 connected to its upper end face 22.

[0055] Furthermore, to prevent the vertical motor 2 from tilting forward, backward, left, and right after being subjected to force, which would cause the output shaft 21 of the vertical motor 2 to deviate from the vertical state and affect the transmission of output torque, a mounting plate 43 is provided between the upper crossbeam 41 and the middle crossbeam 42. The mounting plate 43 is made of stainless steel and has a "U"-shaped notch. The vertical motor 2 is placed in the "U"-shaped notch and its lower end face abuts against the bottom of the "U"-shaped notch. The body of the vertical motor 2 is fixed to the mounting plate 43 by a clamping component 23.

[0056] The mounting component 23 includes a first mounting component 231 and a second mounting component 232. The first mounting component 231 has a groove with a semi-circular cross-sectional shape and protruding edges extending from both sides of the groove. The second mounting component 232 has the same structure as the first mounting component 231. The first mounting component 231 and the second mounting component 232 are respectively mounted on the mounting plate 43 from the front and rear sides of the mounting plate 43 with slots towards the machine body. The protruding edges are fixed to the mounting plate 43 to lock the machine body in place, which can prevent the machine body from shifting forward, backward or left and right after the vertical motor 2 is subjected to force.

[0057] By fixing the upper end face 22 of the vertical motor 2 to the positioning base plate 411, and fixing the machine body to the mounting plate 43 that abuts against the upper crossbeam 41 and the lower crossbeam, the vertical motor 2 can be fixed in all directions, so that the output shaft 21 of the vertical motor 2 always maintains a state of vertically transmitting torque upward.

[0058] The output shaft 21 is a "D" shaped shaft, and the lower end 123 of the worm shaft 121 is provided with a receiving groove adapted to the "D" shaped shaft. The "D" shaped shaft is housed in the receiving groove to achieve coaxial connection between the output shaft 21 and the worm shaft 121.

[0059] As the vertical motor 2 rotates in the forward or reverse direction, under the transmission of the worm gear transmission mechanism 1, the top cover 5 flips upward from a horizontal state to open or flips downward from a vertical state to close, with the worm gear shaft 111a as the axis.

[0060] 3. Connecting block 3

[0061] like Figure 1-3 and Figure 7 As shown, the connecting block 3 is a horizontally placed cuboid structure. Preferably, in this embodiment of the invention, to facilitate the free rotation of the connecting block 3 within a limited space, the front side 31 of the connecting block 3 (with...) Figure 2For the paper reference directions of front, back, left, and right of connecting block 3, the side of connecting block 3 away from top cover 5 is front, and the side of connecting block 3 facing top cover 5 is back (the same below) is arc-shaped. The middle of the rear side 32 of the connecting block 3 is provided with a boss 321 that protrudes backward. The boss 321 is locked in the locking position 51 at the inner edge of the rear side of top cover 5 (the end of top cover 5 connected to worm gear transmission mechanism 1 is back, and the end that can rotate freely is front. When top cover 5 is in the closed state, the side facing inward is inside, and the side facing outward is outside), and is fixed by screws.

[0062] There are two ways to connect the connecting block 3 to the worm gear shaft 111a and the corresponding structures:

[0063] 1) such as Figure 3 and Figure 5 As shown, a mounting bracket 6 for supporting the connecting block 3 is provided on the positioning base plate 411 on the right side of the connecting block 3. The mounting bracket 6 is an integral component. The mounting bracket 6 is provided with a base 63 and a first shaft bracket plate 61. The base 63 is fixed on the positioning base plate 411. To facilitate the positioning and installation of the base 63, the structure of the base 63 is similar to that of the base plate 133. The first shaft bracket plate 61 is vertically arranged on the base 63. A locking shaft 64 coaxial with the worm gear shaft 111a is provided in the first through hole 611 of the first shaft bracket plate 61. The right side 34 of the connecting block 3 is fixedly connected to the transmission end 641 of the locking shaft 64, and the left side 33 of the connecting block 3 is fixedly connected to the second end 113a of the worm gear shaft 111a.

[0064] Preferably, in this invention, a retaining plate 1131 is provided at both the second end 113a and the transmission end 641. The retaining plate 1131 has a polygonal structure. The left side 33 and the right side 34 of the connecting block 3 are provided with recesses that can be embedded in the retaining plate 1131. The recesses have the same shape as the retaining plate 1131. The retaining plate 1131 and the recesses are locked together by screws.

[0065] This structure connects the worm shaft 121 and the locking shaft 64 to the left side 33 and right side 34 of the connecting block 3 respectively, thereby shortening the length of the worm shaft 121 and increasing the driving force on the top cover 5 (when the torque is constant, the shorter the lever arm, the greater the force).

[0066] 2) such as Figure 6As shown, the structure differs from the structure in point 1) in that: the second end 113b of the worm gear shaft 111b extends into an extended shaft, which is divided into an initial section 114b, an intermediate section 115b, and a tail section 116b. A horizontal shaft channel is provided on the connecting block 3. The intermediate section 115b is placed in the shaft channel and is in an interlocking state. Specifically, the cross-sectional shape of the intermediate section 115b is a regular polygon, and the cross-sectional shape of the shaft channel is the same as that of the intermediate section 115b. The intermediate section 115b and the shaft channel are adapted to interlock and can be further fastened together by screws, etc. The tail section 116b passes through the first through hole 611 on the first shaft support plate 61 to support the connecting block 3 between the right support plate 134 and the first shaft support plate 61. A bearing 14 is provided at the first through hole 611 and sleeved on the tail section 116b.

[0067] This structure extends an extended shaft from the second end 113b of the worm gear shaft 111b, passes directly through the connecting block 3 and is fixed to it, so that the connecting block 3 is mounted between the right frame plate 134 and the first shaft frame plate 61, which is easy to process and assemble.

[0068] In this embodiment of the invention, the connecting block 3 is installed on the right side of the worm gear transmission mechanism 1. Similarly, the worm gear transmission mechanism 1 is also suitable for installing the connecting block 3 on its left side. The principle is the same, and will not be repeated here.

[0069] 4. Locking mechanism

[0070] The flipping device also includes a locking mechanism, which is used to position the top cover 5 when it is in the open state. At the same time, it can prevent the worm gear transmission mechanism 1 from being deformed, twisted or damaged when the top cover 5 is in the open state, because the worm gear transmission mechanism 1 has to bear all the force from the top cover 5 on the worm gear transmission mechanism.

[0071] like Figure 3 and Figure 5 As shown, the locking mechanism includes a driving part and a locking part. A second shaft frame plate 62 is vertically arranged on the base 63 on the right side of the first shaft frame plate 61. A second through hole 621 is provided on the second shaft frame plate 62, which is coaxially arranged with the first through hole 611. The driving part is fixed to the base 63 and placed on the right side of the second shaft frame plate 62. The locking part is retractably placed in the second through hole 621. When the top cover 5 is flipped to the open state under the action of the vertical motor 2, the locking part pops out and engages with the locking end 642 of the locking shaft 64 or the tail section 116b of the extended shaft.

[0072] Specifically, the driving part is a push-pull electromagnet 7, which includes an electromagnetic coil 71 and an iron core 72 inserted into the electromagnetic coil 71. The locking part is a locking tongue 74 connected to the outer end of the iron core 72. A positioning plate 741 is provided at the position where the locking tongue 74 and the iron core 72 are connected. A spring 73 is sleeved on the iron core 72. One end of the spring 73 abuts against the positioning plate 741 and the other end abuts against the electromagnetic coil 71. A baffle 6211 is provided in the second through hole 621 to prevent the iron core 72 from passing through the second through hole 621, while allowing the locking tongue 74 to pass through the second through hole 621 and be placed outside the second through hole 621.

[0073] Structure of latch 74:

[0074] A. As Figure 8 As shown, the locking tongue 74 has a "U"-shaped groove structure, and the corresponding locking end 642 of the locking shaft 64 or the cross-sectional shape of the tail section 116b is "U".

[0075] B, such as Figure 9 As shown, the locking tongue 74 has a card structure, and the corresponding locking end 642 of the locking shaft 64 or the tail section 116b has a card slot.

[0076] When the electromagnetic coil 71 is energized, the iron core 72 drives the locking tongue 74 to move towards the electromagnetic coil 71, so as to retract the locking tongue 74 into the second through hole 621. When the electromagnetic coil 71 is de-energized, under the action of the spring 73, the locking tongue 74 extends out of the second through hole 621 and engages with the locking end 642 of the locking shaft 64 or the tail section 116b.

[0077] 5. Top cover 5 position detection sensor

[0078] The cooking appliance is also equipped with a position detection sensor (not shown in the figure) for detecting the position of the top cover 5. The position detection sensor, the vertical motor 2 and the push-pull electromagnet 7 are all electrically connected to the main control center of the cooking appliance. The position information of the top cover 5 detected by the position detection sensor is transmitted to the main control center, and the main control center then controls the vertical motor 2 and the push-pull electromagnet 7 to work.

[0079] 6. The location of the flipping device on the cooking appliance

[0080] like Figure 10 As shown, the frame 4 is a cuboid frame constructed from four columns of equal length and perpendicular to the horizontal plane, and crossbeams and longitudinal beams fixed between adjacent columns. A top plate 8 is provided at the upper end of the columns. The upper crossbeams 41 are located below the top plate 8 and are spaced apart. A pot 81 and a stove 82 are embedded in the top plate 8. The top cover 5 is used to cover the pot 81 and the stove 82.

[0081] The vertical motor 2 and the worm gear transmission mechanism 1 are both hidden under the top plate 8 and are located in the gap between the rear side plate 9 of the cooking appliance and the pot 81, or in the gap between the rear side plate 9 of the cooking appliance and the stove 82. A mounting position 83 is provided on the rear side of the top plate 8, which allows the connecting block 3 to rotate freely. The worm gear shaft 111a extends from below the top plate 8 to the mounting position 83 and connects with the connecting block 3.

[0082] This invention, through the rational structural layout of the vertical motor 2 and the worm gear transmission mechanism 1, not only achieves stable performance in the automatic opening and closing of the top cover 5, but also makes full use of the internal space of the cooking appliance, thereby improving the utilization rate of the internal space of the cooking appliance.

[0083] The assembly method of the flipping device is as follows:

[0084] Step 1: Fix the vertical motor 2 onto the positioning base plate 411 and the mounting plate 43;

[0085] Step 2: Connect the second end 113a of the worm gear shaft 111a to the left side 33 of the connecting block 3, and at the same time connect the transmission end 641 of the locking shaft 64 to the right side 34 of the connecting block 3.

[0086] Step 3: Install the worm gear 11, the first end 112a of the worm gear shaft 111a, the worm 12 and the worm shaft 121 onto the support frame 13; at the same time, install the snap-fit ​​end 642 of the locking shaft 64 and the locking mechanism onto the mounting bracket 6;

[0087] Step 4: Connect the worm shaft 121 to the output shaft 21 of the vertical motor 2, and fix the support frame 13 and the mounting bracket 6 to the positioning base plate 411; at the same time, fix the connecting block 3 to the top cover 5.

Claims

1. A flipping device for driving the opening and closing of the top cover of a cooking appliance, characterized in that, The flipping device consists of a drive motor, a worm gear transmission mechanism, and a connecting block. The drive motor is mounted on the frame of the cooking appliance, and the connecting block is fixed to the inner rear edge of the top cover. The drive motor and the connecting block are connected via the worm gear transmission mechanism. The worm gear transmission mechanism includes a worm wheel, a worm, and a support frame. The support frame is mounted on a positioning base plate extending forward from the upper crossbeam at the rear of the frame. The worm wheel and worm are mounted on the support frame, and the worm wheel transmits driving force to the connecting block through the worm wheel shaft. A mounting bracket for supporting the connecting block is provided on the positioning base plate on the right side of the connecting block. The mounting bracket is an integral component and includes a base and a first shaft support plate. The base is fixed on the positioning base plate, and the first shaft support plate is vertically mounted on the base. A locking shaft coaxial with the worm wheel shaft is provided in the first through hole of the first shaft support plate. The right side of the connecting block is fixedly connected to the transmission end of the locking shaft. As the drive motor rotates forward or backward, the top cover flips upward from a horizontal state to open or flips downward from a vertical state to close. The flipping device also includes a locking mechanism for locking the top cover in a set position. The locking mechanism includes a push-pull electromagnet and a snap-fit ​​part. A second shaft frame plate is vertically provided on the base on the right side of the first shaft frame plate. A second through hole is provided on the second shaft frame plate, which is coaxial with the first through hole. The push-pull electromagnet is fixed to the base and placed on the right side of the second shaft frame plate. The snap-fit ​​part is retractably placed in the second through hole. When the top cover is flipped to the open state under the action of the drive motor, the snap-fit ​​part pops out and engages with the snap-fit ​​end of the locking shaft to share the force exerted by the top cover on the worm gear.

2. The flipping device for driving the opening and closing of the top cover of a cooking appliance as described in claim 1, characterized in that, The support frame is an integral structure with an inner cavity, formed by an upper frame plate, a left frame plate, a bottom frame plate, and a right frame plate. The bottom frame plate is fixed to the positioning base plate. The first end of the worm gear shaft is placed in the left shaft hole of the left frame plate, and the second end of the worm gear shaft extends to the right through the right frame plate. The worm gear is placed in the inner cavity. The upper end of the worm shaft is placed in the upper shaft hole of the upper frame plate, and the lower end of the worm shaft extends downward through the bottom frame plate. The worm is placed vertically in the inner cavity and meshes with the worm gear.

3. The flipping device for driving the opening and closing of the top cover of a cooking appliance as described in claim 2, characterized in that, The lower end of the worm shaft passes through the positioning plate and is coaxially connected to the output shaft of the drive motor fixed on the positioning plate.

4. The flipping device for driving the opening and closing of the top cover of a cooking appliance as described in claim 3, characterized in that, The drive motor is a vertical motor, and a mounting plate is provided between the upper crossbeam and the middle crossbeam. The motor body is fixed to the mounting plate by a clamping component that ensures that the output shaft remains vertical.

5. The flipping device for driving the opening and closing of the top cover of a cooking appliance as described in claim 4, characterized in that, The second end of the worm gear shaft is fixedly connected to the left side of the connecting block.

6. The flipping device for driving the opening and closing of the top cover of a cooking appliance as described in claim 5, characterized in that, Both the second end and the transmission end are provided with a retaining plate. The left and right sides of the connecting block are provided with recesses into which the retaining plate can be inserted. The recesses are the same shape as the retaining plate, and the retaining plate and the recesses are locked together by screws.

7. The flipping device for driving the opening and closing of the top cover of a cooking appliance as described in claim 6, characterized in that, The push-pull electromagnet includes an electromagnetic coil and an iron core inserted into the electromagnetic coil, and the locking part is a locking tongue connected to the outer end of the iron core.

8. The flipping device for driving the opening and closing of the top cover of a cooking appliance as described in claim 7, characterized in that, The drive motor and worm gear transmission mechanism are both hidden under the top plate of the cooking appliance for mounting the pot and the stove, and are located in the gap between the rear side plate of the cooking appliance and the pot, or in the gap between the rear side plate of the cooking appliance and the stove. The top plate is provided with a mounting position that allows the connecting block to be freely rotated.

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