Knob type opening and closing pressure cooker

Abstract

The utility model discloses a pressure cooker capable of being opened and closed in a knob mode, belongs to the technical field of cooking utensils, and aims to overcome the defect that cover opening and closing operation of an existing pressure cooker is strenuous. The pressure cooker comprises a cooker body and a cooker cover, the cooker cover comprises a fixing assembly positioned on the cooker body and a lock cover capable of rotating relative to the fixing assembly, a rotatable knob is arranged in the middle of the fixing assembly, a driving gear and a driven connecting rod are arranged on the fixing assembly, and inner teeth are arranged on the driven connecting rod and meshed with the driving gear. The driven connecting rod is provided with a driving position connected with the lock cover, the inner teeth are located between the swinging axis and the driving position, and the rotary knob is connected with the driving gear. After power is transmitted from the driving gear to the inner teeth on the driven connecting rod, the distance between the inner teeth and the swing axis of the driven connecting rod is a power arm, the swing axis deviates from the rotating axis of the driving gear, the power arm is effectively added, and the operation that the knob drives the lock cover to rotate is more labor-saving.

Description

Technical Field

[0001] The utility model belongs to the technical field of cooking utensils and relates to a knob-type opening and closing pressure cooker. Background Art

[0002] In the prior art, there is a screw-on pressure cooker with a knob in the middle of the lid for opening and closing operations. The prior art mostly uses a coaxial gear drive or a direct drive structure for the lid. When the lid rotates, its resistance is at the edge of the lid, and its resistance arm is fixed. The driving mechanism is in the middle of the lid, and its power arm is short. The opening and closing operation is more laborious. Even after the pressure cooker has been used for a long time, it becomes difficult to open and close due to increased friction. Summary of the invention

[0003] The utility model aims to solve the problems existing in the prior art and provides a knob-type opening and closing pressure cooker, aiming to overcome the defect that the opening and closing of the lid of the prior art pressure cooker is relatively laborious.

[0004] The utility model is achieved in this way:

[0005] A knob-type opening and closing pressure cooker comprises a pot body and a pot cover, wherein the pot cover comprises a fixed component positioned on the pot body and a locking cover rotatable relative to the fixed component, a rotatable knob is arranged in the middle of the fixed component, and the invention is characterized in that a driving gear and a driven connecting rod are arranged on the fixed component, the driven connecting rod is provided with internal teeth meshing with the driving gear, the swing axis of the driven connecting rod deviates from the rotation axis of the driving gear, the driven connecting rod has a driving position connected with the locking cover, the internal teeth are located between the swing axis and the driving position, and the knob is connected with the driving gear.

[0006] A central shaft is fixedly arranged at the center of the lock cover, and the central shaft is rotatably arranged on the fixing component.

[0007] The knob is provided with a positioning and mounting groove, in which an elastic member and a positioning member are provided, the fixing assembly is provided with a middle mounting groove, the knob is installed in the middle mounting groove, the bottom wall of the middle mounting groove has a lid closing groove and a lid opening groove, when the positioning member is located in the lid closing groove, the locking cover is locked with the pot body, and when the positioning member is located in the lid opening groove, the locking cover is unlocked from the pot body.

[0008] The bottom wall of the middle installation groove is provided with a concave-convex strip between the cover closing groove and the cover opening groove.

[0009] The driving gear is directly fixed on the knob by at least two fixing bolts, the central axis passes through the rotation center of the driving gear, and the fixing assembly is provided with an arc-shaped limiting hole, and the fixing bolt penetrates into the arc-shaped limiting hole.

[0010] The fixing assembly is provided with a connecting rod shaft, the driven connecting rod is provided with a rotating shaft hole matched with the connecting rod shaft, the lock cover is provided with a toggle shaft, the driving position of the driven connecting rod is provided with a toggle hole matched with the toggle shaft, and the toggle hole is a strip hole.

[0011] The fixing assembly comprises a surface cover and a middle bottom cover fixed on the surface cover, the driving gear and the driven connecting rod are both located between the surface cover and the middle bottom cover, the middle bottom cover has an arc-shaped hole, and the shifting shaft passes through the arc-shaped hole.

[0012] The fixing assembly comprises end bottom covers located at both ends of the surface cover, the end bottom covers are provided with positioning holes, the pot body is provided with side ears, the side ears are provided with positioning blocks, and the positioning blocks are embedded in the positioning holes.

[0013] The lock cover is provided with a guide column, the upper end of the guide column is provided with a limit cap with an increased outer diameter, the end bottom cover is provided with a guide groove, one end of the guide groove is provided with a mounting opening for the limit cap to pass through, and the diameter of the limit cap is greater than the width of the guide groove.

[0014] The surface cover is provided with a plurality of fixing columns distributed on both sides of the driven connecting rod, and the fixing columns located on the same side of the driven connecting rod are connected by connecting ribs, the driven connecting rod comprises a sector portion and a driving portion, the driving portion is raised relative to the outer arc edge of the sector portion, the driving position is located on the driving portion, and the connecting ribs extend toward the driving portion to limit the swing angle of the driven connecting rod;

[0015] The sector-shaped portion is provided with a sector-shaped hole, the driving gear is located in the sector-shaped hole, and the inner teeth are located on the outer arc edge of the sector-shaped hole;

[0016] The knob includes a connecting portion and a gripping portion, the outer side of the connecting portion has a vertically extending positioning groove, the connecting portion has an upwardly opening yielding groove, the gripping portion includes a connecting ring and a handle spanning the connecting ring, the inner side of the connecting ring is provided with a positioning rib embedded in the positioning groove, the upper end of the face cover is provided with a limiting ring, the inner side of the limiting ring extends toward the center to above the knob.

[0017] The utility model has the following beneficial effects: after the power is transmitted from the driving gear to the internal teeth on the driven connecting rod, the distance from the internal teeth to the swing axis of the driven connecting rod is the power arm, and the swing axis deviates from the rotation axis of the driving gear, which effectively increases the power arm, making the operation of turning the knob to drive the lock cover to rotate more labor-saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the structure of a pressure cooker;

[0019] Figure 2The diagram is a schematic diagram of the explosion structure of a pressure cooker;

[0020] Figure 3 It is a local structural cross-sectional view of the pressure cooker from a first angle;

[0021] Figure 4 It is a partial structural cross-sectional view of the pressure cooker at a second angle;

[0022] Figure 5 It is a schematic diagram of the first partial structure of the pot cover;

[0023] Figure 6 is a schematic diagram of a second partial structure of the pot cover;

[0024] Figure 7 It is a schematic diagram of the structure of the knob;

[0025] Figure 8 It is a structural schematic diagram of the lock cover;

[0026] Fig. 9 It is a schematic diagram of the structure of the cover from a first angle;

[0027] Fig.10 It is a schematic diagram of the structure of the cover at a second angle;

[0028] Fig.11 It is a schematic diagram of the structure of the middle bottom cover;

[0029] Fig.12 is a structural schematic diagram of a driven connecting rod;

[0030] Fig.13 It is a schematic diagram of the structure of the driving gear.

[0031] Description of the accompanying drawings: 100, pot body; 110, side ears; 111, positioning block; 200, lock cover; 210, central axis; 220, guide column; 221, limit cap; 230, toggle shaft; 300, knob; 310, connecting part; 311, positioning groove; 312, clearance groove; 313, positioning installation groove; 314, elastic member; 315, positioning member; 320, gripping part; 321, connecting ring; 322, handle; 323, positioning rib; 330, fixing bolt; 400, Surface cover; 410, end bottom cover; 411, positioning hole; 412, guide groove; 413, installation port; 420, middle bottom cover; 421, arc-shaped limiting hole; 422, arc-shaped hole; 430, limiting ring; 440, middle installation groove; 441, cover closing groove; 442, cover opening groove; 443, concave and convex strip; 450, connecting rod shaft; 460, fixing column; 470, connecting rib; 500, driving gear; 600, driven connecting rod; 610, internal teeth; 620, shaft hole; 630, toggle hole. DETAILED DESCRIPTION

[0032] The following will further describe the specific implementation of the utility model in combination with the accompanying drawings of the embodiments, so that the technical solution of the utility model is easier to understand and grasp. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not used to limit the utility model.

[0033] This embodiment provides a pressure cooker, such as Figure 1-13 As shown, it comprises a pot body 100 and a pot cover, wherein the pot cover comprises a fixed assembly positioned on the pot body 100 and a lock cover 200 that can rotate relative to the fixed assembly, and the pot cover can be switched between the closed and open states by rotating the lock cover 200. A rotatable knob 300 is provided in the middle of the fixed assembly, and a driving gear 500 and a driven connecting rod 600 are provided on the fixed assembly, and an internal tooth 610 is provided on the driven connecting rod 600 to mesh with the driving gear 500, and the swing axis of the driven connecting rod 600 deviates from the rotation axis of the driving gear 500, and the driven connecting rod 600 has a driving position connected to the lock cover 200, and the internal tooth 610 is located between the swing axis and the driving position, and the knob 300 is connected to the driving gear 500. The knob 300 drives the driving gear 500, and the driving gear 500 drives the driven connecting rod 600 to swing around the swing axis, and the driven connecting rod 600 further drives the lock cover 200 to rotate. The rotation center of the inner teeth 610 is the swing axis of the driven connecting rod 600. The rotation radius of the inner teeth 610 is greater than the rotation radius of the driving gear 500. The driving gear 500 is transmitted to the driven connecting rod 600, so as to achieve the first level of labor saving. Since the swing axis of the driven connecting rod 600 deviates from the rotation axis of the driving gear 500, and the rotation axis of the driving gear 500 is concentric with the rotation center of the knob 300 and the lock cover 200, after the power is transmitted from the driving gear 500 to the inner teeth 610 on the driven connecting rod 600, the distance from the inner teeth 610 to the swing axis of the driven connecting rod 600 is the power arm, which effectively increases the power arm, achieves the second level of labor saving, and achieves the purpose of labor-saving cover opening with fewer transmission accessories. In this embodiment, the rotation diameter of the driving gear 500 is 25.5 mm, and the rotation diameter of the inner teeth 610 is 102 mm.

[0034] like Figure 2 , 4 As shown, the fixing assembly includes a cover 400 and end bottom covers 410 located at both ends of the cover 400, the end bottom covers 410 are provided with positioning holes 411, the pot body 100 is provided with side ears 110, the side ears 110 are provided with positioning blocks 111, and the positioning blocks 111 are embedded in the positioning holes. The cover 400 can block the positioning holes 411 and the positioning blocks 111, avoid the accumulation of foreign matter in the matching gap between the positioning holes 411 and the positioning blocks 111, and improve the aesthetics of the pot cover. The fixing assembly is positioned on the pot body 100 and will not rotate relative to the pot body 100, ensuring that the entire pot cover will not rotate when the knob 300 is turned.

[0035] like Figure 2-6 As shown, a central axis 210 is fixedly arranged at the center of the lock cover 200, and the lower end of the central axis 210 is a threaded column, which is locked on the lock cover 200 by a nut. The central axis 210 is rotatably penetrated on the fixed component. In this way, the lock cover 200 can rotate relative to the fixed component. The lock cover 200 is provided with a guide column 220, and the upper end of the guide column 220 has a limit cap 221 with an increased outer diameter, and the end bottom cover 410 is provided with a guide groove 412, the guide groove 412 is arc-shaped, and one end of the guide groove 412 is provided with a mounting opening 413 for the limit cap 221 to pass through, and the diameter of the limit cap 221 is greater than the width of the guide groove 412. The cooperation between the guide column 220 and the guide groove 412 plays an auxiliary guiding role in the rotation of the lock cover 200, and can also assist in bearing the weight of the lock cover 200.

[0036] like Figure 2 , 3 As shown in FIGS. 7 and 10, the knob 300 is provided with a positioning installation groove 313, and an elastic member 314 and a positioning member 315 are provided in the positioning installation groove 313. The fixing assembly is provided with a middle installation groove 440, and the knob 300 is installed in the middle installation groove 440. The bottom wall of the middle installation groove 440 has a cover closing groove 441 and a cover opening groove 442. When the positioning member 315 is located in the cover closing groove 441, the lock cover 200 is locked with the pot body 100, and when the positioning member 315 is located in the cover opening groove 442, the lock cover 200 is unlocked with the pot body 100. The cover closing groove 441 and the cover opening groove 442 provide the user with a clear reminder of the opening and closing position of the cover. The elastic member 314 is a spring, and the positioning member 315 is a steel column. In other optional embodiments, the elastic member 314 can also be a silicone member, and the positioning member 315 can also be a column with a spherical lower end.

[0037] Further, such as Fig.10 As shown, the bottom wall of the middle mounting groove 440 is provided with a concave-convex strip 443 between the cover closing groove 441 and the cover opening groove 442, so as to provide a damping feel for the rotation process of the knob 300 and form a clear rotation feedback.

[0038] like Figure 6 , 7As shown in Figures 13, the driving gear 500 is directly fixed to the knob 300 by at least two fixing bolts 330, the central axis 210 passes through the rotation center of the driving gear 500, and the fixing assembly is provided with an arc-shaped limiting hole 421, and the fixing bolt 330 penetrates the arc-shaped limiting hole 421. The fixing assembly includes a middle bottom cover 420 fixed to the face cover 400, the driving gear 500 and the driven connecting rod 600 are both located between the face cover 400 and the middle bottom cover 420, and the arc-shaped limiting hole 421 is located on the face cover 400. The arc-shaped limiting hole 421 limits the moving range of the fixing bolt 330, thereby limiting the rotation angle of the knob 300 and the lock cover 200 to avoid excessive rotation. In other optional embodiments, the arc-shaped limiting hole 421 may not be provided.

[0039] like Figure 2 , 4 -9, 12, the fixing assembly is provided with a connecting rod shaft 450, and the connecting rod shaft 450 is specifically located on the face cover 400. The driven connecting rod 600 is provided with a rotating shaft hole 620 to cooperate with the connecting rod shaft 450, and the central axis 210 line of the rotating shaft hole 620 and the connecting rod shaft 450 is the swing axis of the driven connecting rod 600. The locking cover 200 is provided with a toggle shaft 230, and the driving position of the driven connecting rod 600 is provided with a toggle hole 630 to cooperate with the toggle shaft 230, and the toggle hole 630 is a bar-shaped hole. Since the driven connecting rod 600 and the locking cover 200 do not rotate concentrically, the toggle hole 630 is a bar-shaped hole so that the toggle shaft 230 can be appropriately shifted in the toggle hole 630, ensuring that the driven connecting rod 600 and the locking cover 200 can rotate synchronously. The middle bottom cover 420 has an arc-shaped hole 422 , and the shifting shaft 230 passes through the arc-shaped hole 422 . The arc-shaped hole 422 allows the shifting shaft 230 to have a movable space.

[0040] like Figure 6 As shown, the face cover 400 is provided with a plurality of fixing columns 460 distributed on both sides of the driven connecting rod 600. In this embodiment, there are four fixing columns 460, which are used to fix the middle bottom cover 420. The middle bottom cover 420 is fixed to the face cover 400 by screws fixed on the fixing columns 460. The fixing columns 460 located on the same side of the driven connecting rod 600 are connected by connecting ribs 470. The driven connecting rod 600 includes a sector and a driving portion. The driving portion is raised relative to the outer arc edge of the sector. The driving position is located on the driving portion. The connecting ribs 470 extend toward the driving portion to limit the swing angle of the driven connecting rod 600. The connecting ribs 470 can strengthen the structure of the fixing columns 460 and also limit the swing angle of the driven connecting rod 600, so that the rotation angle of the lock cover 200 is jointly limited by multiple structures to improve reliability.

[0041] like Fig.12As shown, the fan-shaped portion has a fan-shaped hole, the driving gear 500 is in the fan-shaped hole, and the inner teeth 610 are located on the outer arc edge of the fan-shaped hole. In other optional embodiments, the position of the inner teeth 610 can also be higher than the fan-shaped hole. In this case, the driving gear 500 does not need to be embedded in the fan-shaped hole, and the fan-shaped hole can also be replaced by an arc-shaped hole.

[0042] like Figure 2 As shown, the knob 300 includes a connecting portion 310 and a gripping portion 320, the outer side of the connecting portion 310 has a vertically extending positioning groove 311, the connecting portion 310 has a yielding groove 312 with an opening facing upward, the gripping portion 320 includes a connecting ring 321 and a handle 322 spanning the connecting ring 321, the inner side of the connecting ring 321 is provided with a positioning rib 323 embedded in the positioning groove 311, and the upper end of the cover 400 is provided with a limiting ring 430, the inner side of the limiting ring 430 extends toward the center to the top of the knob 300. During operation, the hand is held on the handle 322 to rotate the knob 300, and the yielding groove 312 provides a yielding space for the hand to hold, so as to facilitate the hand to apply force. During installation, the connecting portion 310 and the holding portion 320 are assembled and inserted into the middle installation groove 440 together. The limiting ring 430 can prevent the knob 300 from being separated from the middle installation groove 440 .

Claims

1. A knob-type opening and closing pressure cooker, comprising a cooker body (100) and a cooker cover, wherein the cooker cover comprises a fixing assembly positioned on the cooker body (100) and a locking cover (200) rotatable relative to the fixing assembly, a rotatable knob (300) being provided in the middle of the fixing assembly, and characterized in that: The fixing assembly is provided with a driving gear (500) and a driven connecting rod (600); the driven connecting rod (600) is provided with an internal tooth (610) meshing with the driving gear (500); the swing axis of the driven connecting rod (600) deviates from the rotation axis of the driving gear (500); the driven connecting rod (600) has a driving position connected to the lock cover (200); the internal tooth (610) is located between the swing axis and the driving position; and the knob (300) is connected to the driving gear (500).

2. A knob-type opening and closing pressure cooker according to claim 1, characterized in that: A central shaft (210) is fixedly arranged at the center of the locking cover (200), and the central shaft (210) is rotatably inserted into the fixing assembly.

3. The knob-type opening and closing pressure cooker according to claim 1, characterized in that: The knob (300) is provided with a positioning installation groove (313), and an elastic member (314) and a positioning member (315) are provided in the positioning installation groove (313); the fixing assembly is provided with a middle installation groove (440), and the knob (300) is installed in the middle installation groove (440); the bottom wall of the middle installation groove (440) has a cover closing groove (441) and a cover opening groove (442); when the positioning member (315) is located in the cover closing groove (441), the locking cover (200) is locked with the pot body (100); when the positioning member (315) is located in the cover opening groove (442), the locking cover (200) is unlocked with the pot body (100).

4. A knob-type opening and closing pressure cooker according to claim 3, characterized in that: The bottom wall of the middle installation groove (440) is provided with a concave-convex strip (443) between the cover closing groove (441) and the cover opening groove (442).

5. The knob-type opening and closing pressure cooker according to claim 2, characterized in that: The driving gear (500) is directly fixed to the knob (300) via at least two fixing bolts (330); the central axis (210) passes through the rotation center of the driving gear (500); an arc-shaped limiting hole (421) is provided on the fixing assembly; and the fixing bolt (330) penetrates into the arc-shaped limiting hole (421).

6. The knob-type opening and closing pressure cooker according to claim 1, characterized in that: The fixing assembly is provided with a connecting rod shaft (450), the driven connecting rod (600) is provided with a rotating shaft hole (620) which cooperates with the connecting rod shaft (450), the lock cover (200) is provided with a toggle shaft (230), the driving position of the driven connecting rod (600) is provided with a toggle hole (630) which cooperates with the toggle shaft (230), and the toggle hole (630) is a strip-shaped hole.

7. The knob-type opening and closing pressure cooker according to claim 6, characterized in that: The fixing assembly comprises a surface cover (400) and a middle bottom cover (420) fixed on the surface cover (400); the driving gear (500) and the driven connecting rod (600) are both located between the surface cover (400) and the middle bottom cover (420); the middle bottom cover (420) has an arc-shaped hole (422), and the shifting shaft (230) passes through the arc-shaped hole (422).

8. The knob-type opening and closing pressure cooker according to claim 7, characterized in that: The fixing assembly comprises end bottom covers (410) located at both ends of the surface cover (400), the end bottom covers (410) are provided with positioning holes (411), the pot body (100) is provided with side ears (110), the side ears (110) are provided with positioning blocks (111), and the positioning blocks (111) are embedded in the positioning holes.

9. The knob-type opening and closing pressure cooker according to claim 8, characterized in that: The lock cover (200) is provided with a guide column (220), the upper end of the guide column (220) is provided with a limiting cap (221) with an increased outer diameter, the end bottom cover (410) is provided with a guide groove (412), one end of the guide groove (412) is provided with a mounting opening (413) for the limiting cap (221) to pass through, and the diameter of the limiting cap (221) is greater than the width of the guide groove (412).

10. The knob-type opening and closing pressure cooker according to claim 8, characterized in that: The surface cover (400) is provided with a plurality of fixing columns (460) distributed on both sides of the driven connecting rod (600), and the fixing columns (460) located on the same side of the driven connecting rod (600) are connected by a connecting rib (470), and the driven connecting rod (600) comprises a fan-shaped portion and a driving portion, the driving portion is raised relative to the outer arc edge of the fan-shaped portion, the driving position is located on the driving portion, and the connecting rib (470) extends in the direction of the driving portion to limit the swing angle of the driven connecting rod (600); The fan-shaped portion has a fan-shaped hole, the driving gear (500) is located in the fan-shaped hole, and the inner teeth (610) are located on the outer arc edge of the fan-shaped hole; The knob (300) comprises a connecting portion (310) and a gripping portion (320), the outer side of the connecting portion (310) is provided with a vertically extending positioning groove (311), the connecting portion (310) is provided with a yielding groove (312) opening upward, the gripping portion (320) comprises a connecting ring (321) and a handle (322) spanning the connecting ring (321), the inner side of the connecting ring (321) is provided with a positioning rib (323) embedded in the positioning groove (311), the upper end of the cover (400) is provided with a limiting ring (430), the inner side of the limiting ring (430) extends toward the center to above the knob (300).

Images