A collapsible cooker

Abstract

The present invention is a collapsible cooker, which includes a base, a support column and an upper device. A rotating sleeve is provided on the support column, and the support column is connected to the base through the rotating sleeve. The rotating sleeve can be inserted into and withdrawn from the base. It further includes a positioning shaft. The support column is connected to the upper device through the positioning shaft, and the upper device can be switched and positioned at multiple positions through the positioning shaft. When the rotating sleeve is inserted into the base, the support column is limited in the rotating direction, and the support column is arranged perpendicular to the base. The upper device is supported by the support column and positioned by the positioning shaft, so that the upper device is opposite to the base. When the rotating sleeve is withdrawn from the base to a set distance, the support column can rotate along the base to the side of the base through the rotating sleeve. The upper device is switched and positioned through the positioning shaft, so that the upper device is accommodated in the space formed between the support column and the base. The present application aims to provide a storage structure in which the upper device is first withdrawn a certain distance along with the support column and then rotated for storage.

Description

Technical Field

[0001] The present invention relates to the field of cookers, and in particular to a collapsible cooker. Background Art

[0002] In an upper-heating cooker, a support structure is usually provided. The heating device is placed above through the support structure so that it can be located above the food placement surface and mainly heats the food in the form of thermal radiation from above. When the upper-heating cooker is stored, the upper-placed heating device needs to occupy too much vertical space, resulting in the cooker not being able to be placed in a storage space with insufficient vertical space. Therefore, the support column is set to be rotatable so that the heating device can be folded to the horizontal direction, enabling the cooker to be suitable for storage in a storage space with sufficient horizontal space but insufficient vertical space. However, in this rotational storage method, the heating device can only be rotated to the other side of the connection end of the base and the support structure, so the base area of the product cannot be made larger, and the heating device can only adopt a strip-shaped structure, which affects the practicability of the product. Summary of the Invention

[0003] The purpose of the present invention is to solve the above technical problems and provide a collapsible cooker. This application aims to provide a storage structure in which the support column is first pulled out a certain distance and then rotated for storage, and the upper device can adjust its position in cooperation with the storage movement of the support column. After adopting this structure, the upper device (such as the heating device) can adjust its own position and be stored at a better angle between the support column and the base. The structures of the base and the upper device can be designed larger, increasing the practicability of the product.

[0004] To achieve the above purpose, the technical solution of the present invention is as follows:

[0005] A collapsible cooker includes a base, a support column, and an upper device. A rotating sleeve is provided on the support column, and the support column is connected to the base through the rotating sleeve. The rotating sleeve can be inserted into and pulled out of the base. It also includes a positioning shaft. The support column is connected to the upper device through the positioning shaft, and the upper device switches and positions at multiple positions through the positioning shaft. When the rotating sleeve is inserted into the base, the support column is limited in the rotating direction, and the support column is vertically arranged with respect to the base. The upper device is supported by the support column and positioned by the positioning shaft, so that the working surface of the upper device is opposite to the base. When the rotating sleeve is pulled out of the base to a set distance, the support column can rotate along the base to the side of the base through the rotating sleeve, and the position of the upper device is switched to a position flush with the support column and positioned through the positioning shaft, so that the upper device is accommodated in the space formed between the support column and the base.

[0006] For the collapsible cooker according to the present application, by the cooperation of the rotating sleeve and the base, the support column needs to be pulled out a certain distance along the direction of inserting and positioning the rotating sleeve into the base before the side of the collapsible base can be rotated. After long-term use, this connection structure can still stably support the upper device above the base. When entering the storage state, it is convenient for users to store the cooker in a sufficient horizontal storage space; since the support column connection structure needs to be pulled out a certain distance to unlock the rotation before storage, rather than directly rotating the support column for storage, the connection structure in this solution has higher stability compared to the solution of directly rotating the connection between the support column and the base, solving the problems that the connection structure is prone to looseness and cannot stably support after long-term use. Moreover, the connection structure of the present application can also make the structures and sizes of the base of the cooker and the upper device unrestricted. Compared with the directly rotating support column connection structure, the base and the upper device can be designed larger, increasing the practicality of the product; for the upper device, if the size of the upper device is designed larger, only rotating and storing the upper device after the support column is pulled out will cause the upper device to not be able to be stored in the space between the support column and the base in a better position state. To cooperate with the rotating and storing action after the support column is pulled out, the present application uses a positioning shaft structure to enable the upper device and the support column to switch and position between multiple positions. When the rotating sleeve is inserted into the base, the support column is arranged perpendicular to the base, and the support column can support the upper device, so that the working surface of the upper device can face the base, enabling the upper device to normally cooperate with the base for cooking work. After the rotating sleeve is pulled out and rotated to the side of the base, the position of the upper device is switched to a position flush with the support column and positioned through the positioning shaft, so that the upper device is accommodated in the space formed between the support column and the base, avoiding the upper device affecting the storage of the cooker due to its too large size or incorrect angle placement.

[0007] Further, the base is provided with a guiding groove, and a guiding post is fixed in the guiding groove. The rotating sleeve is provided with an opening, and the rotating sleeve is sleeved outside the guiding post through the opening, so that the rotating sleeve can be inserted into or withdrawn from the base along the guiding post in the guiding groove; a rotation limiting section, a rotation section and an axial limiting section are sequentially formed on the guiding post; when the rotating sleeve is inserted into the base, the opening of the rotating sleeve is sleeved on the rotation limiting section, and a rotation limit is formed between the opening and the rotation limiting section; when the rotating sleeve is withdrawn from the base by a set distance, the opening leaves the rotation limiting section and reaches the rotation section, and at this time, there is no rotation limit between the opening and the rotation section; the opening is smaller than the axial limiting section, so that the rotating sleeve is restricted from detaching from the guiding post. The support post is used to support the upper device above the base and cooperate with the base to form various cooking functions. The axial limiting section cooperates with the rotating sleeve to limit the support post on the guiding post and keep it connected to the base. The rotation limiting section cooperates with the limiting sleeve to form a rotation limit. The rotation limit enables the upper device to be supported above the base through the support post, enabling the user to normally use the cooker to heat food. The limiting sleeve can also axially slide a certain distance along the rotation limiting end. By sliding, the upper device can be taken out above the base and slid to the rotation section, so that the rotating sleeve can perform a rotating action, driving the support post and the upper device to be received on the side of the base.

[0008] Preferably, the cross-section of the opening and the rotation limiting section are in clearance fit, and at least one rotation blocking surface is provided on the cross-sections of the opening and the rotation limiting section.

[0009] Preferably, the cross-section of the opening and the rotation limiting section are in clearance fit, and the cross-sections of the opening and the rotation limiting section are square, triangular or arc-shaped with at least one straight side.

[0010] Preferably, the cross-section of the rotation section is smaller than the size of the opening, and the opening rotates on the rotation section without obstruction.

[0011] Preferably, the rotation limiting section, the rotation section and the axial limiting section are respectively surface sections of different sizes and shapes provided on the guiding post. The cross-section of the rotation limiting section is in clearance fit with the opening, and at least one rotation blocking surface is provided between the cross-sections of the opening and the rotation limiting section; the rotation section is a cylinder with a size smaller than the opening, and the cylinder can rotate in the opening; the axial limiting section is the end of the guiding post with a cross-section size larger than the opening, and the axial limiting section restricts the rotating sleeve from detaching from the guiding post.

[0012] Furthermore, a shaft hole is provided on the upper device, a positioning hole is provided on the support column, at least one positioning block extends outward from the positioning shaft, and the positioning shaft reciprocates along the extending direction of the shaft hole in the shaft hole. During the reciprocating movement, there is a state in which the positioning block on the positioning shaft cooperates with the positioning hole to position and switch the upper device at multiple positions relative to the support column. The positioning of the multiple positions includes positioning the upper device to a first position flush with the support column, positioning the upper device to a second position where its working surface faces the base, and positioning the upper device to a third position where the upper device is turned up by at least 90 degrees relative to the support column and the base. The first position cooperates with the support column to accommodate the upper device in the space formed between the support column and the base. The upper device and the support column are switched and positioned at at least three positions through the positioning shaft. The first position enables the upper device to be placed flush with the support column during storage, avoiding the upper device affecting the overall storage of the cooker. The second position enables the upper device to cooperate with the base for cooking work. The third position allows the upper device to be turned up after the cooking work is completed when the upper device is not needed, thus preventing the user from touching the upper device when operating on the base or taking food on the base.

[0013] Furthermore, a rotation guiding column is provided outside the shaft hole of the upper device, and an arc-shaped guiding groove cooperating with the rotation guiding column is correspondingly provided outside the positioning hole of the support column. The arc-shaped guiding groove is an arc groove, and the arc corresponding to the arc groove allows the rotation guiding column to rotate at least 270 degrees. The positioning hole is a cross-shaped hole, and two positioning blocks are symmetrically provided. Through the cooperation of the positioning hole and the positioning hole, the upper device and the support column can be positioned at the angles of 0 degrees, 90 degrees, 180 degrees, and 270 degrees for turning up. The 0-degree positioning corresponds to the second position, the 90-degree or 180-degree positioning corresponds to the third position, and the 270-degree positioning corresponds to the first position.

[0014] Furthermore, a safety switch is further included. The safety switch is a contact switch or a magnetic control switch. The safety switch generates a signal for the upper device to supply power and work when the rotating sleeve is inserted into the base, and the safety switch generates a signal for the upper device to stop supplying power when the rotating sleeve is withdrawn from the base.

[0015] Furthermore, a positioning device is further included. The positioning device is used to maintain the state where the rotating sleeve is inserted into the base and makes it necessary to overcome resistance when the rotating sleeve is withdrawn from the base. Description of the Drawings

[0016] Figure 1 A perspective view of the cooker according to the present invention in a use state;

[0017] Figure 2Stereogram of the cooker of the present invention in the stored state;

[0018] Figure 3 Stereogram of the cooker of the present invention in the up-turned state;

[0019] Figure 4 Exploded view of the cooker of the present invention;

[0020] Figure 5 Stereogram of the guide post of the present invention;

[0021] Figure 6 Stereogram of the support post of the present invention;

[0022] Figure 7 Stereogram of the support post of the present invention from another angle;

[0023] Figure 8 Cross-sectional view of the cooker of the present invention;

[0024] Figure 9 Exploded view of the cooker of the present invention;

[0025] Figure 10 Stereogram of the positioning shaft of the present invention;

[0026] Figure 11 Cross-sectional view of the present invention from another angle;

[0027] Figure 12 Cross-sectional view of the cooker of another embodiment of the present invention;

[0028] Figure 13 Stereogram of the support post of another embodiment of the present invention. Detailed implementation manners

[0029] A retractable cooker of the present invention is described with reference to the accompanying drawings.

[0030] As Figures 1 to 11The shown cooker includes a base 1, a support column 2, and an upper device 4. The upper device 4 is installed at one end of the support column 2, and the upper device 4 is supported above the base 1 through the support column 2. The upper device 4 can be an upper heating device or other devices for cooperating with cooking food, such as a smoke exhaust device, etc. The upper device 4 shown in the attached drawings of this application is an upper heating device. The working surface of the energized upper heating device, that is, the surface of the upper heating device where the heat radiation tubes are arranged relative to the base, and the heat radiation tubes installed in the working surface mainly heat the food placed on the base 1 in a heat radiation manner. This application provides a connection structure between the support column 2 and the base 1, so that in addition to being able to support the upper device 4 above the base 1, the support column 2 can also allow the upper device 4 to be received at the side of the base 1 along with the support column 2, facilitating the user to store the cooker in a sufficient storage space in the horizontal direction. And, as Figure 1 and Figure 2 shown, to increase the heating area of the upper device 4, relatively long heat radiation tubes are generally selected, and the upper device 4 for installing these heat radiation tubes also needs to be set relatively long and narrow in shape accordingly. If the upper device 4 directly rotates and is received after being pulled out along with the support column 2, the long and narrow upper device 4 will protrude downward, making the cooker unable to be placed flat on various planes. Therefore, in this application, the upper device 4 is set to be rotatable relative to the support column 2, and there is a rotation angle of the upper device 4 to adjust the orientation of the upper device 4 to be flush with the base 1 when the upper device 4 is received at the side of the base 1, further facilitating the storage of the longer upper heating cooker in a sufficient storage space in the horizontal direction.

[0031] As Figure 4 shown, it further includes a guide column 3. A rotating sleeve 21 is provided at the other end of the support column 2, and the rotating sleeve 21 is sleeved on the guide column 3; one end of the guide column 3 is fixed on the base 1, and from the fixed position of the guide column 3 outward are a rotation limiting section 31, a rotation section 32, and an axial limiting section 33 in sequence. The rotating sleeve 21 cooperates with the rotation limiting section 31 to form a rotation limit for the rotating sleeve 21. This rotation limit enables the upper device 4 to be supported above the base 1 through the support column 2, and also enables the rotating sleeve 21 to slide axially along the guide column 3. Through the axial sliding, the support column 2 can be pulled out a certain distance, so that the upper device 4 can be taken out above the base 1. The axial limiting section 33 provides a limit for the axial sliding of the rotating sleeve 21. When the rotating sleeve 21 slides to the rotation section 32, the rotating sleeve 21 can rotate around the rotation section 32, so that after the rotating sleeve 21 slides to the rotation section 32 and can perform a rotation and storage action, it drives the support column 2 and the upper device 4 to be received at the side of the base 1, thus forming the situation as Figure 2 shown.

[0032] As Figure 5 、Figure 6 , Figure 7 and Figure 8 As shown, the rotating sleeve 21 of the present application forms various actions or states of limiting, sliding, and turning in cooperation with the guide post 3 through a first limiting plate 22 structure, such as Figure 8 and Figure 11 shown, the first limiting plate 22 is arranged at the outermost end of the rotating sleeve 21, and the set distance is recorded as the length of the rotation limiting section 31. An opening 23 is provided in the middle of the first limiting plate 22. Through the opening 23, the rotating sleeve 21 slides on the rotation limiting section 31 and the rotating section 32 and rotates in the rotating section 32. Through the first limiting plate 22, the rotating sleeve 21 forms an axial limit with the axial limiting section 33. The structure of the first limiting plate 22 is simple and highly reliable, and the manufacturing cost of the cooker can be reduced.

[0033] A screw hole 311 is provided at the fixing place of the guide post 3, and a screw 13 is further included, which is fixed on the base 1 through the screw 13. The screw fixing structure adopted in the present application can facilitate the installation of the rotating sleeve 21 during the installation process. Specifically, during installation, the guide post 3 can be first passed through the opening 23, and then the guide post 3 can be fixed on the base 1 through the screw fixing structure.

[0034] To achieve the rotation limiting effect of the first limiting plate 22 and the rotation limiting section 31, the present application provides various implementation manners of the cooperation between the opening 23 and the rotation limiting section 31.

[0035] Preferably, the cross-section of the opening 23 and the rotation limiting section 31 is in clearance fit, and at least one rotation blocking surface is provided on the cross-section of the opening 23 and the rotation limiting section 31.

[0036] Further preferably, the cross-section of the opening 23 and the rotation limiting section 31 is in clearance fit, and the cross-section of the opening 23 and the rotation limiting section 31 is square, triangular, or circular arc with at least one straight side.

[0037] As shown in the attached Figure 6 figure, an implementation manner of setting the opening 23 as a square opening 23 with a chamfer is given in the attached figure. The rotation limiting section 31 is in clearance fit with the opening 23, and the rotation limiting section 31 is a columnar structure with the same shape as one side of the opening 23, such as Figure 5 shown, the shape of the rotation limiting section 31 is a rectangular prism with a cross-section of a square with a rounded corner. Since the opening 23 adopts a non-circular shape, the square shape of the opening 23 with a chamfer, and the rotation limiting section 31 also has the same shape as the opening 23 and is in clearance fit, the rotating sleeve 21 can rotate and be limited on the rotation limiting section 31 and can slide along the rotation limiting section 31.

[0038] To achieve the rotational effect of the first limiting plate 22 and the rotating section 32, the present application provides various implementation manners of the cooperation between the opening 23 and the rotating section 32.

[0039] Preferably, the cross-section of the rotating section 32 is smaller than the size of the opening 23, and there is no obstruction when the opening 23 rotates on the rotating section 32.

[0040] As Figure 6 shown, in the accompanying drawings, an implementation manner is given in which the opening 23 is set as a square opening 23 with a chamfer, and the rotating section 32 is a cylindrical structure whose cross-sectional dimension is smaller than the size of the inscribed circle of the opening 23. As Figure 5 shown, preferably, the shape of the rotating section 32 is set as a cylinder, and the dimension setting manner of the rotating section 32 can enable the rotating sleeve 21 to rotate around the rotating section 32 when the first limiting plate 22 moves onto the rotating section 32.

[0041] As Figure 8 described, the axial limiting section 33 is in clearance fit with the inner wall of the rotating sleeve 21, and the axial limiting section 33 is a cylindrical structure whose cross-sectional dimension is larger than the size of the opening 23. As Figure 5 shown, the axial limiting section 33 is set as a cylindrical shape in clearance fit with the inner wall of the rotating sleeve 21. The stepped surface of the axial limiting section 33 close to the rotating section 32 abuts against the first limiting plate 22 to achieve axial limitation, so that the rotating sleeve 21 is restricted from disengaging from the guiding column 3, and the clearance fit between the axial limiting section 33 and the inner wall of the rotating sleeve 21 can cooperate with the first limiting plate 22 to provide a certain support for the rotating sleeve 21 during the sliding process of the rotating sleeve 21, making the sliding of the rotating sleeve 21 more stable.

[0042] As Figures 7 to 10 shown, it further includes a positioning shaft 8. The upper device 4 is provided with a shaft hole 41, the support column 2 is provided with a positioning hole 252. The positioning shaft 8 extends at least one positioning block 81 outwards. The positioning shaft 8 reciprocates along the extending direction of the shaft hole 41 in the shaft hole 41. During the reciprocating movement, there is a position where the positioning block 81 is inserted into the positioning hole 252 to position the upper device 4, and there is also a position where the positioning block 81 moves out of the positioning hole 252, so that the upper device 4 can switch its position, thereby realizing the positioning and switching of multiple positions of the upper device 4. The positioning of the multiple positions includes positioning the upper device 4 to the first position flush with the support column 2, positioning the upper device 4 to the second position where its working surface faces the base 1, and positioning the upper device 4 to the third position where it is turned up by at least 90 degrees relative to the support column 2 and the base 1. The first position corresponds to the attached Figure 2 , the second position corresponds to the attached Figure 1 , the third position corresponds to the attached Figure 3, the first position can cooperate with the support column 2 to accommodate the upper device 4 in the space formed between the support column 2 and the base 1. The second position can enable the upper device 4 to cooperate with the base 1 to perform cooking work normally. The third position can, after the cooking work is completed, turn up the upper device 4 when the upper device 4 is not needed, so as to prevent the user from touching the upper device 4 and being scalded when operating or taking food on the base 1.

[0043] The structure for reciprocating the positioning shaft 8 includes an elastic member 9 and a pressing member. The elastic member 9 is disposed in the shaft hole 41. The elastic member 9 provides support for the positioning shaft 8 so that the positioning block 81 can be received in the positioning hole 252. The pressing member is mounted on the support column 2 and corresponds to the positioning shaft 8 in position. Pressing the pressing member cooperates with the elastic member 9 to form the reciprocating movement. There is a position during the reciprocating movement where the positioning block 81 exits the positioning hole 252, so that the upper device 4 can perform position switching at multiple angles relative to the support column 2. When the upper device 4 is positioned, the elastic member 9 presses against the positioning shaft 8, so that the positioning block 81 on the positioning shaft 8 can be received in the positioning hole 252, so that the upper device 4 is positioned by the support column 2. When it is necessary to rotate the upper device 4, by pressing the pressing member, the positioning block 81 on the positioning shaft 8 exits the positioning hole 252, and the elastic member 9 is also elastically compressed. At this time, the upper device 4 can rotate relative to the support column 2. After releasing the pressing of the pressing member, the positioning block 81 will be pushed back into the positioning hole 252 under the elastic force of the elastic member 9, so that the upper device 4 and the support column 2 are repositioned.

[0044] The pressing member includes a limit cover 6 and an unlocking key 7. An installation groove 25 is provided at the upper end of the support column 2. The positioning hole 252 is provided on the bottom surface of the installation groove 25. A through hole is provided in the middle of the limit cover 6. The unlocking key 7 extends outwards with a flanging 71. The size of the flanging 71 is larger than the size of the through hole. The unlocking key 7 is received at the through hole through the flanging 71. The limit cover 6 is fixed in the installation groove 25. The limit cover 6 can be fixed in the installation groove 25 by other fixing methods such as threaded connection and welding, and the unlocking key 7 is limited in the cavity between the installation groove 25 and the limit cover 6. The unlocking key 7 abuts against the positioning shaft 8 in the cavity.

[0045] The positioning shaft 8 extends towards the unlocking key 7 with a fixing section 82. A fixing groove 72 is provided on the unlocking key 7. The fixing section 82 and the fixing groove 72 are in interference fit, so that the unlocking key 7 can maintain connection with the positioning shaft 8 during the process of being pressed and released.

[0046] The positioning shaft 8 extends towards the elastic member 9 with a socket section 83. The elastic member 9 is a spring, and the spring is sleeved outside the socket section 83 and presses against the positioning block 81.

[0047] As Figures 7 to 10 shown, the present application specifically provides an embodiment capable of positioning at 90 degrees, 180 degrees, and 270 degrees. The positioning hole 252 is a cross-shaped hole. There are two positioning blocks 81, and they are symmetrically arranged, so that the positioning shaft 8 can be positioned with the cross-shaped hole. And a guiding structure is also provided, including a rotating guiding column 42 and an arc-shaped guiding groove 251. The upper device 4 is also provided with a rotating guiding column 42 outside the shaft hole 41, and the supporting column 2 is correspondingly provided with an arc-shaped guiding groove 251 cooperating with the rotating guiding column 42 outside the positioning hole 252. The arc-shaped guiding groove 251 is an arc groove, and the radian corresponding to the arc groove allows the rotating guiding column 42 to rotate at least 270 degrees, so that the upper device 4 and the supporting column 2 can be positioned at the upward-flipping angles of 0 degrees, 90 degrees, 180 degrees, and 270 degrees. As Figure 3 shown, the state in the figure is that the upper device 4 is flipped upward by 90 degrees. As Figure 2 shown, the state in the figure is that the upper device 4 is flipped upward by 270 degrees and cooperates with the supporting column 2 to be received in the side of the base 1. By adopting the upward-flipping action, it can be avoided that when the user presses the unlocking key 7, there is no support for the upper device 4, and the upper device 4 accelerates and hits the base 1 under the action of its own gravity.

[0048] Preferably, a safety switch 5 is further provided in the base 1 or the guiding column 3. The safety switch 5 generates a signal for the upper device 4 to supply power and work when the rotating sleeve 21 is inserted into the base 1, and the safety switch 5 generates a signal for the upper device 4 to stop supplying power when the rotating sleeve 21 is pulled out of the base 1. As Figure 11 shown, the present application provides an embodiment of setting a contact-type safety switch 5 in the base 1. The base 1 is provided with a guiding groove 11, the guiding column 3 is fixed in the guiding groove 11 through a screw fixing structure, the safety switch 5 is a contact switch, and the safety switch 5 extends into the guiding groove 11 with a trigger block 51. The position of the trigger block 51 corresponds to the position of the rotation limiting section 31. When the rotating sleeve 21 slides on the rotation limiting section 31, it can press the trigger block 51 to supply power to the upper device 4, that is, after the power is plugged in, the cooker can supply power to the upper device 4. The safety switch 5 adopts a trigger-type safety switch 5, such as a micro switch, etc., and extends its triggering part into the guiding groove 11 so that it can contact and trigger with the rotating sleeve 21. The present application can also set the contact-type safety switch in the guiding column 3, and similarly, a trigger block 51 can be extended into the guiding groove 11 for the rotating sleeve 21 to trigger.

[0049] As Figure 11As shown, the present application provides a more preferred embodiment. The trigger block 51 is arranged at the end of the guiding groove 11, that is, at the end of the sliding of the rotating sleeve 21 in the guiding groove 11, so that the user needs to push the rotating sleeve 21 to the end of the rotation limiting section 31 to trigger the safety switch 5, further improving the safety performance of the product.

[0050] The present application also provides another non-contact safety switch. By adopting the non-contact safety switch, the relative sliding between the rotating sleeve 21 and the guiding column 3 will not be hindered, which is also beneficial to maintaining the structural integrity of the base 1 or the guiding column 3, thus facilitating the design of the overall waterproof structure of the cooker. Preferably, the safety switch is a magnetic switch, which is arranged in the base 1 or the guiding column 3. The magnetic switch can be components such as a magnetic attraction switch or a Hall device. A first magnet is arranged on the rotating sleeve 21. In the normal cooking use state of the cooker, the position of the first magnet can cooperate with the magnetic attraction switch or the Hall device. The first magnet can close the magnetic attraction switch, and through the closed magnetic attraction switch, a signal for power supply to the upper device 4 is generated to control the cooker, or the first magnet can cooperate with the Hall device to generate an electrical signal, and through this electrical signal, a signal for power supply to the upper device 4 is generated to control the cooker.

[0051] In a further preferred solution, the first magnet is arranged on the first limiting plate 22, the magnetic attraction switch or the Hall device is arranged at a position close to the fixing part in the guiding column 3, and the screw 13 for fixing the guiding column 3 is set as a screw 13 made of magnetic metal or alloy. The first magnet conducts magnetism through the screw 13, enabling it to better cooperate with the magnetic attraction switch or the Hall device to produce a corresponding control effect.

[0052] As Figure 4 and Figure 11 shown, a positioning device is also arranged on the support column 2. The positioning device helps to position between the support column 2 and the base 1, and positions the upper device 4 above the base 1. The positioning device can help the rotation limiting structure formed between the rotation limiting section 31 and the rotating sleeve 21 to further position the positions of the support column 2 and the upper device 4, so that the upper device 4 can be stably supported above the base 1 to heat the food on the heating base 1.

[0053] The positioning device is a second magnet 24, which is fixed on the side of the rotating sleeve 21. The base 1 is provided with a magnetic attraction block 12 magnetically attracted to the second magnet 24 at the corresponding position. The magnetic attraction block 12 is also a magnet attracted to the second magnet 24, or other metal blocks or alloy blocks capable of being magnetically attracted to the second magnet 24. The magnetic force formed by the second magnet 24 and the magnetic attraction block 12 can help to position the support column 2, thereby further positioning the position of the upper device 4.

[0054] As Figure 12 and Figure 13 shown, the present application also provides an embodiment of another connection structure. The base 1 includes an upper seat body 14 and a lower seat body 15. The upper seat body 14 and the lower seat body 15 are joined together to form a guiding chamber. Through the structure of joining up and down, it is convenient to place the rotating sleeve 21 into the guiding chamber. The rotating sleeve 21 can slide in the guiding chamber. Compared with the previous embodiment, the rotating sleeve 21 in this embodiment is cylindrical and extends outward to form a second limiting plate 24. A circular hole for the rotating sleeve 21 to pass through is formed on the wall 18 of the guiding chamber. The circular hole is in clearance fit with the rotating sleeve 21. Through the cooperation of the second limiting plate 24 and the wall 18, the support column 2 cannot be further pulled out after being pulled out a certain distance along the insertion direction.

[0055] The guiding chamber includes a rotation limiting chamber 16 and a rotation chamber 17. The rotation limiting chamber 16 has the same shape as the rotating sleeve 21 and the second limiting plate 24 extending outward therefrom and is in clearance fit therewith, so that after the rotating sleeve 21 is inserted into the rotation limiting chamber 16, it can slide and form rotation limitation, making the support column 2 unable to rotate. The rotation chamber 17 is a cylindrical cavity with a radius larger than the maximum rotation radius of the second limiting plate 24, so that the rotating sleeve 21 can rotate after being pulled out along the rotation limiting chamber 16 to the rotation chamber 17, and thus the support column 2 can also be rotatable.

[0056] According to the disclosure and teaching of the above specification, those skilled in the art to which the present invention pertains can also make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should also fall within the protection scope of the claims of the present invention. In addition, although some specific terms are used in this specification, these terms are only for convenience of description and do not constitute any limitation to the present invention.

Claims

1. A collapsible cooker, comprising a base, a support column and an upper device, characterized in that, A rotating sleeve is provided on the support column, and the base is provided with a guide groove. A guide post is fixed in the guide groove. The rotating sleeve is provided with an opening, and the rotating sleeve is sleeved outside the guide post through the opening, so that the rotating sleeve can be inserted into or withdrawn from the base along the guide post in the guide groove. A positioning shaft is further included. The support column is connected to the upper device through the positioning shaft, and the upper device is switched and positioned at multiple positions through the positioning shaft. A rotation limiting section, a rotation section, and an axial limiting section are sequentially formed on the guide post. When the rotating sleeve is inserted into the base, the opening of the rotating sleeve is sleeved on the rotation limiting section, and a rotation limit is formed between the opening and the rotation limiting section. The support column is vertically arranged with respect to the base. The upper device is supported by the support column and positioned by the positioning shaft, so that the working surface of the upper device faces the base. When the rotating sleeve is withdrawn from the base by a set distance, the opening leaves the rotation limiting section and reaches the rotation section. At this time, there is no rotation limit between the opening and the rotation section. The opening is smaller than the axial limiting section, so that the rotating sleeve is restricted from disengaging from the guide post. The support column can rotate along the base to the side of the base through the rotating sleeve. The position of the upper device is switched to a position flush with the support column through the positioning shaft and positioned, so that the upper device is accommodated in the space formed between the support column and the base. When the upper device is stored on the side of the base, the orientation of the upper device is adjusted to be flush with the base.

2. The collapsible cooker according to claim 1, characterized in that, The cross-section of the opening and the rotation limiting section are in clearance fit, and the opening and the rotation limiting section both have at least one rotation blocking surface.

3. The collapsible cooker according to claim 1, wherein, The cross-section of the opening and the rotation limiting section are in clearance fit, and the cross-section of the opening and the rotation limiting section is square, triangular or circular arc with at least one straight edge.

4. The collapsible cooker according to claim 1, wherein, The cross-section of the rotation section is smaller than the size of the opening, and the opening rotates without hindrance on the rotation section.

5. The collapsible cooker according to claim 1, wherein, The rotation limiting section, the rotation section, and the axial limiting section are respectively surface sections of the guide post with different sizes and shapes. The cross-section of the rotation limiting section is in clearance fit with the opening, and there is at least one rotation blocking surface between the cross-section of the opening and the rotation limiting section. The rotation section is a cylinder with a size smaller than the opening, and the cylinder can rotate in the opening. The axial limiting section is the end of the guide post with a cross-section size larger than the opening, and the axial limiting section restricts the rotating sleeve from disengaging from the guide post.

6. The collapsible cooker according to claim 1, wherein, The upper device is provided with a shaft hole, the support column is provided with a positioning hole, the positioning shaft extends at least one positioning block outwards, the positioning shaft reciprocates in the shaft hole along the extending direction of the shaft hole, and there is a state during the reciprocating movement such that the positioning block on the positioning shaft cooperates with the positioning hole to position and switch the upper device relative to the support column at multiple positions. The positioning of the multiple positions includes positioning the upper device to a first position flush with the support column, positioning the upper device to a second position where its working surface is opposite to the base, and positioning the upper device to a third position where the upper device is turned up by at least 90 degrees relative to the support column and the base. The first position cooperates with the support column to enable the upper device to be accommodated in the space formed between the support column and the base.

7. The collapsible cooker according to claim 6, wherein, The upper device is further provided with a rotation guiding column outside the shaft hole, and the support column is correspondingly provided with an arc-shaped guiding groove that cooperates with the rotation guiding column outside the positioning hole. The arc-shaped guiding groove is a circular arc groove, and the corresponding radian of the circular arc groove allows the rotation guiding column to rotate at least 270 degrees. The positioning hole is a cross-shaped hole, and two positioning blocks are symmetrically provided. Through the cooperation of the positioning hole and the positioning hole, the upper device and the support column can be positioned at the upward turning angles of 0 degrees, 90 degrees, 180 degrees, and 270 degrees, where the 0-degree positioning corresponds to the second position, the 90-degree or 180-degree positioning corresponds to the third position, and the 270-degree positioning corresponds to the first position.

8. The collapsible cooker according to claim 1, wherein It further includes a safety switch, the safety switch is a contact switch or a magnetic control switch. The safety switch generates a signal for the upper device to supply power and work when the rotating sleeve is inserted into the base, and the safety switch generates a signal for the upper device to stop supplying power when the rotating sleeve is withdrawn from the base.

9. The collapsible cooker according to claim 1, wherein, It further includes a positioning device, and the positioning device is used to maintain the state where the rotating sleeve is inserted into the base and make it require resistance to withdraw the rotating sleeve from the base.

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