Safety cooker cover structure of electric pressure cooker

Abstract

The invention discloses a safe cooker cover structure of an electric pressure cooker, which comprises a cooker body, a cooker cover assembly and an unlocking assembly, the cooker cover assembly comprises a cover body, a support and a sliding lock, the skirt edge of the cover body is bent inwards to form a plurality of buckling teeth, the support is fixedly connected with the cover body, and a guide rail is arranged on the support; the pot body is of a barrel-shaped structure, the top end of an opening of the pot body is provided with an end face extending outwards in the radial direction, the end face is provided with a plurality of protruding teeth protruding outwards in the radial direction, the protruding teeth correspond to the buckling teeth, one protruding tooth is a driving tooth, and the sliding lock is in contact fit with the driving tooth. The unlocking assembly can drive the sliding lock to move along the guide rail so that the sliding lock can lock and unlock the rotating movement of the driving teeth. When the cooker cover assembly is screwed or unscrewed, the unlocking action is added, the situation that the cooker cover is accidentally opened due to misoperation or external force can be prevented, and the operation safety of the electric pressure cooker is effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of electric pressure cookers, and in particular to a safety pot cover structure for an electric pressure cooker. Background Art

[0002] As a commonly used kitchen appliance, the electric pressure cooker has a unique high-pressure cooking function that cannot be replaced by other electrical appliances and is very popular among users. However, it is also a high-pressure container when in operation, and its safety has always been a concern for users. After years of iteration and improvement by practitioners, the electric pressure cookers currently on the market have become standardized in terms of materials and structural design for the safety-related parts of the product. The basic structure is: ① A series of convex teeth are provided on the outside of the mouth of the pot body, and the mouth of the lid body is partially bent inward to form a series of buckle teeth; ② In the non-working state, whether the pot lid assembly is screwed in or out, the sliding lock can slide on the sloped surface of the pot body convex teeth (including the sloped surface of the driving teeth); ③ In the working state (with pressure inside), due to the pressure inside the pot, the pressure float on the pot lid will rise and jam the sliding lock, causing the pot lid to be unable to rotate. However, if the pot lid assembly is forcibly rotated, in some cases (for example, the torque for rotating the lid exceeds a certain force, resulting in deformation of parts, size changes, etc.), the sliding lock may also forcibly slide over the sloped surface of the driving tooth, causing the pot lid assembly to be abnormally opened, creating a safety hazard; ④ In abnormal circumstances, such as the pot lid assembly is installed at a wrong angle, so that the stop pin of the sliding lock contacts other convex teeth other than the driving tooth, at this time, since the side of the convex tooth is a sloped surface, the sliding lock may also slide over the convex tooth, causing the pot lid to be buckled in the wrong position, which also creates a safety hazard. Summary of the invention

[0003] The purpose of the present invention is to provide a safety pot cover structure for an electric pressure cooker to solve the above problems existing in the prior art.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] The invention discloses a safety pot cover structure for an electric pressure cooker, comprising a pot body, a pot cover assembly rotatably buckled on the pot body, and an unlocking assembly, wherein the pot cover assembly comprises a cover body, a bracket and a sliding lock, wherein a skirt edge of the cover body is partially bent inwardly to form a plurality of buckling teeth, the bracket is fixedly connected to the cover body, a guide rail is provided on the bracket, the sliding lock is cooperatively connected to the guide rail and can slide along the radial direction of the cover body, the pot body is a barrel-shaped structure, an end face extending radially outward is provided at the top end of the mouth of the pot body, a plurality of convex teeth protruding outward are radially provided on the end face, the convex teeth are correspondingly arranged with the buckling teeth to realize the buckling of the cover body with the pot body, one of the convex teeth is a driving tooth, the sliding lock contacts and cooperates with the driving tooth, and the unlocking assembly can drive the sliding lock to move along the guide rail to realize the locking and unlocking of the rotational movement of the driving tooth by the sliding lock.

[0006] Furthermore, the sliding lock includes a sliding seat, a stop pin and a connecting spring. The sliding seat is slidably connected to the guide rail, the stop pin is fixedly connected to the bottom of the sliding seat, the outer end of the stop pin is sleeved with the connecting spring, one end of the connecting spring abuts against the sliding seat, and the other end abuts against the bracket, and the connecting spring makes the inner end of the stop pin abut against the surface of the driving tooth.

[0007] Furthermore, the cover body is provided with a pressure float that can rise and fall, and the sliding seat is correspondingly provided with a matching hole. When the pressure float rises, it is matched and connected with the matching hole to achieve locking of the sliding seat.

[0008] Furthermore, the two side surfaces of the driving tooth are respectively a first driving tooth side surface and a second driving tooth side surface, and both the first driving tooth side surface and the second driving tooth side surface are straight surfaces perpendicular to the top surface of the driving tooth.

[0009] Furthermore, the driving tooth is respectively provided with a first driving tooth side surface and a second driving tooth side surface along the rotation direction of the closing cover, the first driving tooth side surface is a slope surface, and the second driving tooth side surface is a straight surface perpendicular to the driving tooth top surface.

[0010] Furthermore, two side surfaces of the other plurality of protruding teeth are straight surfaces perpendicular to the tooth top surface.

[0011] Furthermore, the unlocking assembly includes a first button, a connecting rod and a first return spring. The first button is rotatably connected to the rotation axis of the cover body and can rotate around the rotation axis of the cover body. One end of the first button is fixedly connected to an operating end, and the other end of the first button is connected to the connecting rod. The two ends of the connecting rod are respectively connected to the first button and the sliding lock to form a connecting rod mechanism. The two ends of the first return spring are respectively connected to the first button and the bracket. After the first button is rotated, it can drive the connecting rod to drive the sliding lock to move along the guide rail.

[0012] Furthermore, the unlocking assembly includes a second button, a first slider, a turning rod, a second slider and a second return spring, the rotation plane of the second button is perpendicular to the rotation plane of the cover body, the rotation axis of the second button is located above the cover body and can rotate with the cover body, the bottom end of the second button is connected to the first slider, the turning rod can rotate around its rotation axis, the two ends of the turning rod are respectively connected to the first slider and the second slider, the second button, the first slider, the turning rod and the second slider together form a connecting rod mechanism, the second slider is connected to the sliding lock, the second button can drive the turning rod to rotate by driving the first slider, at this time the other end of the turning rod drives the second slider to push the sliding lock to move along the guide rail, and the second button is connected to the second return spring that can drive the second button to reset.

[0013] Furthermore, the unlocking component includes a second dial button, a first slider and a second return spring. The rotation plane of the second dial button is perpendicular to the rotation plane of the cover body. The rotation axis of the second dial button is located above the cover body and can rotate with the cover body. The bottom end of the second dial button is connected to the first slider. The second dial button can drive the sliding lock to move along the guide rail by driving the first slider. The second dial button is connected to the second return spring which can drive the second dial button to reset.

[0014] Compared with the prior art, the beneficial technical effects of the present invention are:

[0015] The safety pot cover structure of the electric pressure cooker of the present invention provides a pot cover assembly and an unlocking assembly, and when the pot cover assembly is screwed on or off, especially when a safety-related unscrewing action is performed, an unlocking action is added, which effectively prevents the pot cover from being accidentally opened due to misoperation or external force, especially when there is still high pressure or high temperature in the pressure cooker; and when the pot cover assembly is misaligned and buckled with the convex teeth of the pot body, the pot cover assembly can be prevented from rotating, thereby greatly improving the operational safety of the electric pressure cooker, and the overall structural design is compact and easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a bottom-up structural schematic diagram of a pot cover assembly in a safety pot cover structure of an electric pressure cooker according to Embodiment 1 of the present invention when the pot cover assembly is in an unlocked position;

[0018] Figure 2 It is a schematic diagram of the bottom structure of the safety cover structure of the electric pressure cooker according to Embodiment 1 of the present invention, when the cover assembly is in the locked position;

[0019] Figure 3 It is a schematic diagram of the top view of the safety pot cover structure of the electric pressure cooker according to Embodiment 1 of the present invention;

[0020] Figure 4 It is a schematic diagram of the three-dimensional structure of the safety pot cover structure of the electric pressure cooker according to Embodiment 1 of the present invention;

[0021] Figure 5 It is a structural schematic diagram of a sliding lock in the safety pot cover structure of an electric pressure cooker according to Embodiment 1 of the present invention;

[0022] Figure 6 It is a bottom view structural schematic diagram of the safety cover structure of the electric pressure cooker according to Embodiment 2 of the present invention, when the cover assembly is in the unlocked position;

[0023] Figure 7 It is a schematic diagram of the bottom structure of the safety cover structure of the electric pressure cooker according to Embodiment 2 of the present invention, when the cover assembly is in the locked position;

[0024] Figure 8 It is a schematic structural diagram of a pot body in a safety pot cover structure of an electric pressure cooker according to Embodiment 2 of the present invention;

[0025] Fig. 9 It is a schematic diagram of the bottom structure of the safety cover structure of the electric pressure cooker according to Embodiment 3 of the present invention, when the cover assembly is in the unlocked position;

[0026] Fig.10 It is a schematic diagram of the bottom structure of the safety cover structure of the electric pressure cooker according to Embodiment 3 of the present invention, when the cover assembly is in the locked position;

[0027] Fig.11 It is a schematic structural diagram of a pot body in a safety pot cover structure of an electric pressure cooker according to Embodiment 4 of the present invention;

[0028] Fig.12It is a structural schematic diagram of an unlocking component in a safety pot cover structure of an electric pressure cooker according to Embodiment 5 of the present invention;

[0029] Fig.13 This is a structural schematic diagram of the unlocking component in the safety lid structure of the electric pressure cooker according to Example 5 of the present invention.

[0030] Explanation of the accompanying drawings: 1. pot cover assembly; 11. cover body; 111. buckle tooth; 12. bracket; 13. sliding lock; 131. stop pin; 132. connecting spring; 133. sliding seat; 14. first dial button; 15. connecting rod; 16. first return spring; 2. pot body; 21. driving tooth; 211. first driving tooth side surface; 212. second driving tooth side surface; 141. second dial button; 151. first slider; 152. steering rod; 153. second slider; 161. second return spring; 17. pressure float. DETAILED DESCRIPTION

[0031] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0032] In the description of the present invention, it should be understood that the terms "length", "width", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0033] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] The technical solutions provided by various embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.

[0035] Example 1

[0036] like Figures 1 to 5 As shown, the safety pot lid structure of the electric pressure cooker of the present embodiment 1 includes a pot body 2, a pot lid assembly 1 rotatably buckled on the pot body 2, and an unlocking assembly, wherein the pot lid assembly 1 includes a cover body 11, a bracket 12 and a sliding lock 13, the skirt of the cover body 11 is partially bent inward to form a plurality of buckling teeth 111, the bracket 12 is fixedly connected to the cover body 11, and a guide rail perpendicular to the axis of the cover body 11 is provided on the bracket 12, and the sliding lock 13 is matched and connected to the guide rail and can slide along the radial direction of the cover body 11.

[0037] In addition, the pot body 2 is a barrel-shaped structure, and the top end of the mouth of the pot body 2 is provided with an end face extending radially outward, and the end face is provided with a plurality of convex teeth protruding outward radially. The convex teeth are correspondingly arranged with the snap teeth 111 to realize the snap fit between the cover body 11 and the pot body 2, one of the convex teeth is a driving tooth 21, and the sliding lock 13 is in contact with the driving tooth 21. The unlocking component can drive the sliding lock 13 to move along the guide rail to realize the locking and unlocking of the rotational movement of the driving tooth 21 by the sliding lock 13, and the unlocking component is connected to the cover body 11.

[0038] Among them, the sliding lock 13 includes a sliding seat 133, a stop pin 131 and a connecting spring 132. The sliding seat 133 is slidably connected to the guide rail. The stop pin 131 is fixedly connected to the bottom of the sliding seat 133. The outer end of the stop pin 131 is sleeved with a connecting spring 132. One end of the connecting spring 132 abuts on the sliding seat 133, and the other end abuts on the bracket 12. The connecting spring 132 makes the inner end of the stop pin 131 abut on the surface of the driving tooth 21, and in the process of screwing in and out of the pot cover assembly 1, the connecting spring 132 will force the inner end of the stop pin 131 to always slide against the surface of the driving tooth 21.

[0039] like Figure 3 , Figure 4As shown, the unlocking assembly includes a first dial button 14, a connecting rod 15 and a first return spring 16. The first dial button 14 is rotatably connected to the rotation axis of the cover body 11 and can rotate around the rotation axis of the cover body 11. One end of the first dial button 14 is fixedly connected to an operating end, and the rotation axis of the operating end can be parallel to the rotation axis of the cover body 11, that is, the rotation plane of the first dial button 14 is parallel to the rotation plane of the cover body 11. The other end of the first dial button 14 is connected to the connecting rod 15, and the two ends of the connecting rod 15 are respectively connected to the first dial button 14 and the sliding lock 13 to form a connecting rod mechanism. The two ends of the first return spring 16 are respectively connected to the first dial button 14 and the bracket 12. After the first dial button 14 is rotated, it can drive the connecting rod 15 to drive the sliding lock 13 to move along the guide rail. Optionally, one end of the first reset spring 16 is fixed on the cover body 11 or on other parts fixedly connected to the cover body 11, and the other end pulls the first dial button 14, so that the first dial button 14 can be reliably reset after being released.

[0040] Preferably, the two side surfaces of the driving tooth 21 are respectively the first driving tooth side surface 211 and the second driving tooth side surface 212, and the first driving tooth side surface 211 and the second driving tooth side surface 212 are both straight surfaces perpendicular to the top surface of the driving tooth 21, that is, the first driving tooth side surface 211 and the second driving tooth side surface 212 are both normal surfaces perpendicular to the rotation direction of the cover body 11. At this time, whether the pot cover assembly 1 is screwed in or out, the side surface of the driving tooth 21 will block the sliding of the sliding lock 13, so that the pot cover assembly 1 cannot rotate; only when the first dial button 14 is rotated, the first dial button 14 drives the connecting rod 15 to push the sliding lock 13 to move outward, and the pot cover assembly 1 is unlocked, the pot cover assembly 1 can be screwed in or out.

[0041] like Figures 3 to 5 As shown, in this embodiment 1, a pressure float 17 that can rise and fall is provided on the cover body 11, and a matching hole is correspondingly provided on the sliding seat 133. When the pot body 2 is at normal pressure, the pressure float 17 falls, and the sliding lock 13 can move. When there is pressure in the pot body 2, the pressure float 17 rises. At this time, the pressure float 17 is connected with the matching hole. Specifically, the pressure float 17 penetrates into the matching hole, and the sliding seat 133 is stuck to achieve the locking of the sliding lock 13.

[0042] The safety pot cover structure of the electric pressure cooker of the first embodiment is used as follows: Figure 1 As shown, when the pot cover assembly 1 is in the unlocked position, when the pot cover assembly 1 is rotated in the closing direction, the stop pin 131 of the sliding lock 13 is blocked by the first driving tooth side surface 211 of the driving tooth 21, and the pot cover assembly 1 cannot rotate; Figure 2 As shown, when the pot cover assembly 1 is located at the locked position, when the pot cover assembly 1 is rotated in the direction of opening the cover, the pot cover assembly 1 is locked and cannot rotate because the stop pin 131 of the sliding lock 13 is blocked by the second driving tooth side surface 212 of the driving tooth 21.

[0043] When the pot cover assembly 1 needs to be screwed on, Figure 3 , Figure 4 As shown, first, the first dial button 14 is turned, and the first dial button 14 rotates and drives the connecting rod 15 to push the sliding lock 13 to move outward along the guide rail, and the stop pin 131 leaves the position that interferes with the first driving tooth side surface 211 of the driving tooth 21, thereby unlocking the pot cover assembly 1. At this time, the pot cover assembly 1 is rotated in the closing direction, and the pot cover assembly 1 will smoothly rotate to the locked position, thereby realizing the screwing of the pot cover assembly 1; when the pot cover assembly 1 needs to be unscrewed, the first dial button 14 is also turned first, and the first dial button 14 rotates and drives the connecting rod 15 to push the sliding lock 13 to move outward along the guide rail, and the stop pin 131 leaves the position that interferes with the second driving tooth side surface 212 of the driving tooth 21, thereby unlocking the pot cover assembly 1, and then the pot cover assembly 1 is rotated in the opening direction, and the pot cover assembly 1 will smoothly rotate to the unlocked position, thereby realizing the unscrewing of the pot cover assembly 1.

[0044] Example 2

[0045] like Figures 6 to 8 As shown, the difference between this embodiment 2 and embodiment 1 is that the driving tooth 21 is respectively provided with a first driving tooth side surface 211 and a second driving tooth side surface 212 along the rotation direction of closing the cover, the first driving tooth side surface 211 is a slope surface, and the second driving tooth side surface 212 is a straight surface perpendicular to the top surface of the driving tooth 21. At this time, the closing direction is counterclockwise, and the opening direction is clockwise.

[0046] The safety pot cover structure of the electric pressure cooker of the second embodiment is used as follows: Figure 6 As shown, when the pot cover assembly 1 is in the unlocked position and screwed in, the pot cover assembly 1 is rotated in the closing direction, and the stop pin 131 of the sliding lock 13 encounters the first driving tooth side surface 211 of the driving tooth 21, and the stop pin 131 is pushed outward by the slope surface, and the pot cover assembly 1 can reach the locked position; Figure 7 As shown, when the pot cover assembly 1 is located at the locked position, the pot cover assembly 1 is rotated in the direction of opening the cover, and the stop pin 131 is blocked by the second driving tooth side surface 212 of the driving tooth 21, and the pot cover assembly 1 cannot rotate.

[0047] Compared with Example 1, in Example 2, when the pot cover assembly 1 is rotated from the unlocking position to the closing direction, no unlocking action is required, thus improving the convenience of use while ensuring safety.

[0048] Example 3

[0049] like Fig. 9 , Fig.10As shown, the difference between this embodiment 3 and embodiment 1 is that the driving tooth 21 is respectively provided with a first driving tooth side surface 211 and a second driving tooth side surface 212 along the rotation direction of closing the cover, the first driving tooth side surface 211 is a slope surface, and the second driving tooth side surface 212 is a straight surface perpendicular to the top surface of the driving tooth 21. At this time, the closing direction is clockwise, and the opening direction is counterclockwise.

[0050] The safety pot cover structure of the electric pressure cooker of the third embodiment is used as follows: Fig. 9 As shown, when the pot cover assembly 1 is in the unlocked position and screwed in, the pot cover assembly 1 is rotated in the closing direction, and the stop pin 131 of the sliding lock 13 encounters the first driving tooth side surface 211 of the driving tooth 21, and the stop pin 131 is pushed outward by the slope surface, and the pot cover assembly 1 can reach the locked position; Fig.10 As shown, when the pot cover assembly 1 is located at the locked position, the pot cover assembly 1 is rotated in the direction of opening the cover, and the stop pin 131 is blocked by the second driving tooth side surface 212 of the driving tooth 21, and the pot cover assembly 1 cannot rotate.

[0051] Compared with Example 1, in Example 3, when the pot cover assembly 1 is rotated from the unlocking position to the closing direction, no unlocking action is required, thus improving the convenience of use while ensuring safety.

[0052] Compared with Example 2, the closing direction of Example 3 is clockwise rotation, while the closing direction of Example 2 is counterclockwise rotation. This is designed to cater to the habits of different consumers.

[0053] Example 4

[0054] like Fig.11 As shown, the difference between this embodiment 4 and embodiment 3 is that, except for the driving tooth 21, the two side surfaces of the other several protruding teeth are straight surfaces perpendicular to the tooth top surface.

[0055] When the safety pot cover structure of the electric pressure cooker of the present embodiment 4 is in use, if the pot cover assembly 1 is installed to the mouth of the pot body 2 at a wrong angle, causing the sliding lock 13 to contact with other protruding teeth other than the driving tooth 21, the pot cover assembly 1 cannot be rotated, that is, the electric pressure cooker cannot enter the working state, thus ensuring the safety when the lid is misaligned and closed.

[0056] Example 5

[0057] like Fig.12 , Fig.13As shown, the difference between this embodiment 5 and embodiment 1 is that the unlocking component includes a second dial button 141, a first slider 151, a steering rod 152, a second slider 153 and a second return spring 161, the rotation plane of the second dial button 141 is perpendicular to the rotation plane of the cover body 11, the rotation axis of the second dial button 141 is located above the cover body 11 and can rotate with the cover body 11, the bottom end of the second dial button 141 is connected to the first slider 151, the steering rod 152 can rotate around its rotation axis, and the two ends of the steering rod 152 are respectively connected to the first slider The block 151 is connected to the second slider 153, the second dial button 141, the first slider 151, the steering rod 152 and the second slider 153 together form a connecting rod mechanism, the second slider 153 is connected to the sliding lock 13, the second dial button 141 can drive one end of the steering rod 152 to rotate by driving the first slider 151, at this time, the other end of the steering rod 152 drives the second slider 153 to push the sliding lock 13 to move along the guide rail, and the second dial button 141 is connected to the second reset spring 161 that can drive the second dial button 141 to reset.

[0058] In this embodiment 5, the second dial button 141 adopts a vertical rotation structure. The second dial button 141 is installed on the handle of the pot cover assembly 1 to simplify the operation. Fig.12 As shown, the second dial button 141 is pushed to rotate vertically in direction A, and the second dial button 141 will push the first slider 151 to move in direction B. The steering rod 152 is driven by the first slider 151 to rotate horizontally in direction C, thereby pushing the second slider 153 to move in direction D. The second slider 153 directly pushes the sliding lock 13 to move outward along the guide rail in the centrifugal direction, thereby unlocking the pot cover assembly 1; when the second dial button 141 is released, the reset spring will force the entire connecting rod structure to reset.

[0059] The cover body 11 is provided with a pressure float 17 which can rise and fall, and the sliding seat 133 is provided with a matching hole correspondingly. Fig.12 As shown, when the pot body 2 is at normal pressure, the pressure float 17 falls and the sliding lock 13 can move; Fig.13 As shown, when there is pressure in the pot body 2, the pressure float 17 rises, and at this time the pressure float 17 is connected with the matching hole. Specifically, the pressure float 17 penetrates into the matching hole, and the sliding seat 133 is stuck to achieve the locking of the sliding lock 13, thereby further improving the safety of the electric pressure cooker.

[0060] Example 6

[0061] The difference between this embodiment 6 and embodiment 1 is that the unlocking component includes a second dial button 141, a first slider 151 and a second return spring 161, the rotation plane of the second dial button 141 is perpendicular to the rotation plane of the cover body 11, the rotation axis of the second dial button 141 is located above the cover body 11 and can rotate with the cover body 11, the bottom end of the second dial button 141 is connected to the first slider 151, at this time, the movement direction of the sliding lock 13 is parallel to the rotation plane of the second dial button 141, the second dial button 141 can drive the sliding lock 13 to move along the guide rail by driving the first slider 151, and the second dial button 141 is connected to the second return spring 161 that can drive the second dial button 141 to reset.

[0062] The safety pot cover structure of the electric pressure cooker of the present invention provides a pot cover assembly and an unlocking assembly, and when the pot cover assembly is screwed on or off, especially when a safety-related unscrewing action is performed, an unlocking action is added, which effectively prevents the pot cover from being accidentally opened due to misoperation or external force, especially when there is still high pressure or high temperature in the pressure cooker; and when the pot cover assembly is misaligned and buckled with the convex teeth of the pot body, the pot cover assembly can be prevented from rotating, thereby greatly improving the operational safety of the electric pressure cooker, and the overall structural design is compact and easy to use.

[0063] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A safety cover structure for an electric pressure cooker, characterized in that: The invention comprises a pot body, a pot cover assembly rotatably buckled on the pot body, and an unlocking assembly, wherein the pot cover assembly comprises a cover body, a bracket and a sliding lock, wherein the skirt of the cover body is partially bent inward to form a plurality of buckling teeth, the bracket is fixedly connected to the cover body, a guide rail is provided on the bracket, the sliding lock is cooperatively connected to the guide rail and can slide along the radial direction of the cover body, the pot body is a barrel-shaped structure, the top end of the mouth of the pot body is provided with an end face extending radially outward, the end face is provided with a plurality of convex teeth protruding outwardly along the radial direction, the convex teeth are correspondingly arranged with the buckling teeth to realize the buckling of the cover body and the pot body, one of the convex teeth is a driving tooth, the sliding lock is in contact with and cooperates with the driving tooth, and the unlocking assembly can drive the sliding lock to move along the guide rail to realize the locking and unlocking of the rotational movement of the driving tooth by the sliding lock.

2. The safety cover structure of an electric pressure cooker according to claim 1, characterized in that: The sliding lock includes a sliding seat, a stop pin and a connecting spring. The sliding seat is slidably connected to the guide rail, the stop pin is fixedly connected to the bottom of the sliding seat, the outer end of the stop pin is sleeved with the connecting spring, one end of the connecting spring abuts against the sliding seat, and the other end abuts against the bracket. The connecting spring makes the inner end of the stop pin abut against the surface of the driving tooth.

3. The safety cover structure of an electric pressure cooker according to claim 2, characterized in that: The cover body is provided with a pressure float which can rise and fall, and the sliding seat is correspondingly provided with a matching hole. When the pressure float rises, it is matched and connected with the matching hole to realize the locking of the sliding seat.

4. The safety cover structure of an electric pressure cooker according to claim 1, characterized in that: The two side surfaces of the driving tooth are respectively a first driving tooth side surface and a second driving tooth side surface, and both the first driving tooth side surface and the second driving tooth side surface are straight surfaces perpendicular to the top surface of the driving tooth.

5. The safety cover structure of an electric pressure cooker according to claim 1, characterized in that: The driving tooth is respectively provided with a first driving tooth side surface and a second driving tooth side surface along the rotation direction of the closing cover, the first driving tooth side surface is a slope surface, and the second driving tooth side surface is a straight surface perpendicular to the driving tooth top surface.

6. The safety cover structure of an electric pressure cooker according to claim 5, characterized in that: The two side surfaces of the other several protruding teeth are straight surfaces perpendicular to the tooth top surface.

7. A safety cover structure for an electric pressure cooker according to any one of claims 1 to 6, characterized in that: The unlocking assembly includes a first dial button, a connecting rod and a first return spring. The first dial button is rotatably connected to the rotation axis of the cover body and can rotate around the rotation axis of the cover body. One end of the first dial button is fixedly connected to an operating end, and the other end of the first dial button is connected to the connecting rod. The two ends of the connecting rod are respectively connected to the first dial button and the sliding lock to form a connecting rod mechanism. The two ends of the first return spring are respectively connected to the first dial button and the bracket. After the first dial button is rotated, it can drive the connecting rod to drive the sliding lock to move along the guide rail.

8. A safety cover structure for an electric pressure cooker according to any one of claims 1 to 6, characterized in that: The unlocking assembly includes a second dial button, a first slider, a turning rod, a second slider and a second return spring. The rotation plane of the second dial button is perpendicular to the rotation plane of the cover body. The rotation axis of the second dial button is located above the cover body and can rotate with the cover body. The bottom end of the second dial button is connected to the first slider. The turning rod can rotate around its rotation axis. The two ends of the turning rod are respectively connected to the first slider and the second slider. The second dial button, the first slider, the turning rod and the second slider together form a connecting rod mechanism. The second slider is connected to the sliding lock. The second dial button can drive the turning rod to rotate by driving the first slider. At this time, the other end of the turning rod drives the second slider to push the sliding lock to move along the guide rail. The second dial button is connected to the second return spring that can drive the second dial button to reset.

9. A safety cover structure for an electric pressure cooker according to any one of claims 1 to 6, characterized in that: The unlocking assembly includes a second dial button, a first slider and a second return spring. The rotation plane of the second dial button is perpendicular to the rotation plane of the cover body. The rotation axis of the second dial button is located above the cover body and can rotate with the cover body. The bottom end of the second dial button is connected to the first slider. The second dial button can drive the sliding lock to move along the guide rail by driving the first slider. The second dial button is connected to the second return spring that can drive the second dial button to return to its original position.

Images