WO2021203749A1 - 限压结构及具有其的压力锅 - Google Patents

限压结构及具有其的压力锅 Download PDF

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Publication number
WO2021203749A1
WO2021203749A1 PCT/CN2020/140353 CN2020140353W WO2021203749A1 WO 2021203749 A1 WO2021203749 A1 WO 2021203749A1 CN 2020140353 W CN2020140353 W CN 2020140353W WO 2021203749 A1 WO2021203749 A1 WO 2021203749A1
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WO
WIPO (PCT)
Prior art keywords
weight
positioning
rotating disk
positioning groove
weights
Prior art date
Application number
PCT/CN2020/140353
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English (en)
French (fr)
Inventor
王俊
夏鹏
李振合
陈伟
程志斌
陈礼昌
刘子龙
安卉
Original Assignee
珠海格力电器股份有限公司
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Application filed by 珠海格力电器股份有限公司 filed Critical 珠海格力电器股份有限公司
Publication of WO2021203749A1 publication Critical patent/WO2021203749A1/zh

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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J27/00—Cooking-vessels
    • A47J27/08—Pressure-cookers; Lids or locking devices specially adapted therefor
    • A47J27/0802—Control mechanisms for pressure-cookers

Definitions

  • This application relates to the technical field of household appliances, and specifically to a pressure limiting structure and a pressure cooker having the same.
  • Pressure cooker is also called pressure cooker, pressure cooker, is a kind of cookware in the kitchen.
  • the pressure cooker promotes this physical phenomenon through the boiling point of the liquid at a higher pressure, exerting pressure on the water, so that the water can reach a higher temperature without boiling, so as to speed up the efficiency of stewing food. It can be used to heat the steamed food to above 100°C. In high altitude areas, the use of a pressure cooker can avoid the problem of lowering the boiling point of water and making it difficult to cook food.
  • the existing pressure cooker limits the pressure by setting a pressure limiting valve with a fixed weight on the exhaust pipe, but this pressure limiting method cannot achieve multi-stage pressure limiting.
  • the main purpose of the present application is to provide a pressure limiting structure and a pressure cooker having the same, so as to solve the problem that the pressure limiting method of the pressure cooker in some embodiments cannot achieve multi-stage pressure limiting.
  • a pressure limiting structure which includes: a weight assembly, the weight assembly having a blocking portion for inserting in the nozzle of the exhaust pipe; the weight assembly It includes a plurality of heavy hammers, which are sequentially stacked in a vertical direction; an adjusting member, which is matched with at least part of the heavy hammers of the plurality of heavy hammers, so as to raise at least part of the plurality of heavy hammers.
  • the weight adjusts the number of weight hammers that are pressed on the exhaust pipe; wherein two adjacent weight hammers are detachably connected.
  • each weight has a lifting state that separates its gravity from the exhaust pipe.
  • the weight is between the adjacent weights.
  • the threaded connection between the two is in the unlocked state.
  • the plurality of weight hammers includes a first weight hammer located in the lowermost layer, each weight hammer located above the first weight hammer has a threaded fitting section and a smooth fitting section connected to each other, and each smooth fitting section is located in a corresponding threaded fitting Above the section; each heavy hammer is provided with a threaded mating part that matches the threaded mating section of the heavy hammer above the heavy hammer; when each heavy hammer is in the initial state, the threaded mating part of the heavy hammer and the heavy hammer The threaded mating section of the heavy hammer above the hammer is matched; when each heavy hammer is in a raised state, the threaded mating part of the heavy hammer is located in the smooth mating section of the heavy hammer above the heavy hammer.
  • the plurality of heavy hammers includes a second heavy hammer located on the uppermost layer, and the blocking part is arranged on the second heavy hammer; Each heavy hammer below the double hammer.
  • the adjusting component includes a rotating disk, the rotating disk is provided with a positioning block, the weight assembly has a positioning groove, and the matching relationship between the positioning block and the positioning groove is adjusted by rotating the rotating disk to lift or release the plurality of weights. At least part of the heavy hammer.
  • positioning block there is one positioning block, and there are multiple positioning grooves, and at least two positioning grooves in the plurality of positioning grooves have a depth difference in the vertical direction, so that the positioning blocks are inserted into the corresponding positioning grooves to raise the plurality of positioning grooves.
  • the positioning groove is a strip-shaped groove.
  • the top wall of the positioning groove gradually extends in the vertical direction; the positioning block is inserted in the positioning groove to pass through the top of the positioning block when the rotating disk rotates. The cooperation between the wall and the top wall of the positioning groove lifts or releases at least part of the weights of the plurality of weights.
  • the adjusting component further includes a rotating tooth part, which is arranged on the rotating disk, so as to drive the rotating disk to rotate by pushing the rotating tooth part.
  • the adjusting component further includes a sleeve part and a locking part, the sleeve part is sleeved on the rotating disk, the locking part is provided on the sleeve part, and at least part of the locking part is telescopically arranged in the cavity of the sleeve part, The locking part is engaged with the rotating tooth part to push the rotating disc to rotate through the locking part when the sleeve part rotates; or, the pawl part and the pawl part cooperate with the rotating tooth part to drive the rotating disc by driving the rotating tooth part to rotate Rotate.
  • the plurality of weights includes a second weight, and the blocking portion is arranged on the second weight; the first weight, at least part of the first weight is located below the second weight; the rotating disk, the A first positioning block is provided on the disk surface, a first positioning groove is provided on the first weight, and the rotating disk has an initial position and a first working position; wherein, when the rotating disk is at the initial position, the first weight and the second weight The hammers are locked with each other, and the first positioning block is located in the first positioning groove, so that the first heavy hammer and the second heavy hammer are in the initial state of exerting their gravity on the exhaust pipe at the same time; when the rotating disk is in the first position In the working position, the first heavy hammer and the second heavy hammer are in a mutually unlocked state. When the first positioning block is moved out of the first positioning slot, the first heavy hammer is lifted so that the first heavy hammer is in a position to displace its gravity. The elevated state of the trachea detached.
  • the first weight and the second weight are threadedly connected; when the rotating disk is in the first working position, the threaded connection between the first weight and the second weight is at Unlocked state.
  • a second positioning groove is provided on the first heavy hammer, and the depth of the second positioning groove is smaller than the depth of the first positioning groove; when the rotating disk is in the first working position, the first positioning block is clamped in the second positioning groove Inside.
  • a second positioning block is provided on the disk surface of the rotating disk, and the second positioning block is matched with the second positioning groove; when the rotating disk is in the initial position, the second positioning block is clamped in the second positioning groove.
  • the plurality of heavy hammers further includes a third heavy hammer, the third heavy hammer is arranged between the first heavy hammer and the second heavy hammer;
  • a third positioning groove is provided on the third weight, and the third positioning groove extends along the circumferential direction of the third weight;
  • the rotating disk also includes a second working position, an initial position, a first working position and The second working position is arranged in sequence along the rotation direction of the rotating disk; wherein, when the rotating disk is in the initial position and the first working position, the third weight and the second weight are in a mutually locked state, and the third positioning block is located in the first position.
  • the third weight is in the initial state of applying its gravity to the exhaust pipe; when the rotating disk moves to the second working position, the third weight and the second weight are in a mutually unlocked state , The third positioning block is moved out of the third positioning slot to lift the third heavy hammer.
  • a fourth positioning groove is provided on the first heavy hammer, and the depth of the fourth positioning groove is smaller than the depth of the first positioning groove; when the rotating disk is in the second working position, the first positioning block is clamped in the fourth positioning groove Inside.
  • a fourth positioning block is provided on the rotating disk, and the fourth positioning block is matched with the fourth positioning groove; when the rotating disk is in the initial position, the fourth positioning block is located in the fourth positioning groove.
  • the rotating disk when the rotating disk is in the initial position, the first weight and the third weight are threadedly connected, and the second weight and the third weight are threadedly connected; when the rotating disk is in the first working position, the first weight and The threaded connection between the third weight is in the unlocked state, and the second weight is threaded to the third weight; when the rotating disk is in the second working position, the threaded connection between the first weight and the third weight is in In the unlocked state, the threaded connection between the second heavy hammer and the third heavy hammer is in the unlocked state.
  • the pressure-limiting structure further includes a fixing plate, and the fixing plate is provided with positioning holes and avoiding holes for avoiding the exhaust pipe; wherein, the plurality of heavy hammers includes a first heavy hammer located in the lowermost layer, and the first heavy hammer is on the first heavy hammer. A positioning column for inserting in the positioning hole is provided.
  • a pressure cooker which includes an exhaust pipe and the above-mentioned pressure limiting structure, and the pressure limiting structure is used to press gravity on the exhaust pipe.
  • the pressure limiting structure includes a weight assembly and an adjustment component.
  • the tube forms a blocking effect;
  • the weight assembly includes a plurality of weights, which are sequentially stacked in a vertical direction, so as to limit the pressure by the plurality of weights;
  • the adjustment component and at least part of the plurality of weights The weight transmission coordination of the weight, that is, through the cooperation between the adjustment component and at least part of the weight of the multiple weights, at least part of the weight of the multiple weights can be lifted, and then by lifting the weight of the multiple weights
  • At least part of the weights are used to adjust the number of weights placed on the exhaust pipe, that is, to achieve multi-level pressure limiting by adjusting the number of weights placed on the exhaust pipe; this pressure limiting structure is applied to In the pressure cooker, by limiting the pressure of the pressure cooker, the multi-level pressure limitation of the pressure cooker can be realized, so as to realize the multi-level pressure protection of the pressure cooker and various cooking effects
  • two adjacent weights are detachably connected, so that two adjacent weights can be locked or unlocked; when two adjacent weights are in a locked state, the two adjacent weights None of the heavy hammers can be lifted, and only when the two adjacent heavy hammers are in the unlocked state, the two adjacent heavy hammers will be lifted.
  • Fig. 1 shows a schematic diagram of the matching structure of the pressure limiting structure and the exhaust pipe in the first embodiment of the present application
  • Figure 2 shows an internal cross-sectional view of the pressure limiting structure and the matching structure of the exhaust pipe in Figure 1;
  • FIG. 3 shows a schematic diagram of the mating structure of the first weight and the fixed plate of the pressure limiting structure in FIG. 1;
  • FIG. 4 shows a schematic diagram of the explosive structure of the first heavy hammer and the second heavy hammer of the pressure limiting structure in FIG. 1;
  • FIG. 5 shows a schematic diagram of the state when the rotating disk of the pressure limiting structure in FIG. 1 is in an initial position
  • Fig. 6 shows a schematic diagram of the matching structure of the pressure limiting structure and the exhaust pipe in the second embodiment of the present application
  • Figure 7 shows an internal cross-sectional view of the pressure limiting structure and the matching structure of the exhaust pipe in Figure 6;
  • Fig. 8 shows a schematic diagram of the pressure limiting structure and the explosion structure of the exhaust pipe in Fig. 6;
  • FIG. 9 shows a schematic diagram of the distribution structure of the positioning blocks of the adjustment component of the pressure limiting structure in FIG. 6;
  • FIG. 9 shows a schematic diagram of the distribution structure of the positioning blocks of the adjustment component of the pressure limiting structure in FIG. 6;
  • Fig. 10 shows a schematic structural view of the first weight of the pressure limiting structure in Fig. 6;
  • FIG. 11 shows a schematic diagram of the state when the rotating disk of the pressure limiting structure in FIG. 6 is in the first working position
  • FIG. 12 shows a schematic diagram of the state when the rotating disk of the pressure limiting structure in FIG. 6 is in a second working position
  • Fig. 13 shows a schematic structural diagram of an optional pressure limiting structure according to the present application.
  • Fig. 14 shows a schematic diagram of the state when the pushing assembly of the adjusting member of the pressure limiting structure in Fig. 13 is in its initial position
  • FIG. 15 shows a schematic diagram of the process in which the pushing assembly of the adjusting component of the pressure limiting structure in FIG. 13 pushes the rotating disk to rotate;
  • Figure 16 shows a schematic structural diagram of another optional pressure limiting structure according to the present application.
  • Fig. 17 shows a schematic diagram of the state when the pushing assembly of the adjusting member of the pressure limiting structure in Fig. 16 is in its initial position
  • FIG. 18 shows a schematic diagram of the process in which the pushing assembly of the adjusting component of the pressure limiting structure in FIG. 16 pushes the rotating disk to rotate.
  • Thread matching section 1371. Thread matching section; 1372. Smooth matching section; 1373. Thread matching section;
  • Positioning block 1421, first positioning block; 1422, second positioning block;
  • the pressure-limiting structure includes a weight assembly 130 and an adjustment component 140.
  • the weight assembly 130 has a seal for inserting in the nozzle of the exhaust pipe 104.
  • the pressure-limiting structure includes a weight assembly 130 and an adjustment component 140.
  • the blocking portion 1324 of the weight assembly 130 is used to be inserted into the nozzle of the exhaust pipe 104 to prevent the exhaust pipe 104 from being inserted.
  • the weight assembly 130 includes a plurality of weight hammers, which are sequentially stacked in a vertical direction, so as to achieve a pressure limiting effect through the plurality of weight hammers; the adjustment member 140 and at least one of the plurality of weight hammers Part of the weight transmission cooperation, that is, through the cooperation between the adjusting member 140 and at least part of the weights of the multiple weights, at least part of the weights of the multiple weights can be lifted, and then the weights can be lifted by the At least part of the weights of the hammers are used to adjust the number of weights placed on the exhaust pipe 104, that is, the number of weights placed on the exhaust pipe 104 is adjusted to achieve multi-level pressure limitation;
  • the pressure structure is applied in the pressure cooker to limit the pressure of the pressure cooker, which can realize the multi-level pressure limitation of the pressure cooker, so as to realize the multi-level pressure protection of the pressure cooker and various cooking effects, thereby solving the pressure limitation of the pressure cooker in some embodiments.
  • the method cannot achieve the problem
  • two adjacent weights are detachably connected, so that two adjacent weights can be locked or unlocked; when two adjacent weights are in a locked state, the two adjacent weights None of the heavy hammers can be lifted, and only when the two adjacent heavy hammers are in the unlocked state, the two adjacent heavy hammers will be lifted.
  • two adjacent weights have a first connection state and a second connection state; when two adjacent weights are in the first connection state, the two adjacent weights are relatively fixed in the vertical direction; When the two weights are in the second connection state, the adjacent two weights have a predetermined movement stroke that moves relative to each other in the vertical direction, so that the two adjacent weights can move relative to each other in the vertical direction. When the weight moves in the vertical direction, the weight is raised.
  • each weight has the function of reducing its gravity and exhaust
  • the raised state of the tube 104 is disengaged.
  • the threaded connection between the weight and its adjacent weight is in an unlocked state, so that the two adjacent weights are in the second connection State;
  • the weight and its adjacent weights are fixed to each other in the vertical direction, that is, the two adjacent weights are in the first A connection status.
  • the plurality of weight hammers includes a first weight hammer 131 located at the lowest layer, and each weight hammer located above the first weight hammer 131 has a threaded fitting section 1371 and a smooth fitting section 1372 that are connected to each other, and each smooth fitting section 1372 Is located above the corresponding threaded fitting section 1371; each weight is provided with a threaded fitting portion 1373 that matches with the threaded fitting section 1371 of the weight above the weight, so that when each weight is in the initial state, the The threaded fitting portion 1373 of the weight is matched with the threaded portion 1371 of the weight located above the weight; when each weight is in the raised state, the threaded portion 1373 of the weight is located on the weight of the weight above the weight.
  • the smooth surface fits within the section 1372.
  • the pressure-limiting structure 101 further includes a fixing plate 110, and a first weight 131 is provided on the fixed plate 110; the first weight 131 is provided with a positioning column 1312, and the fixed plate 110 is provided with a positioning hole 112 and a positioning column 1312 It is inserted into the positioning hole 112 to relatively fix the first weight 131 and the fixing plate 110.
  • the plurality of weights includes a second weight 132 located at the uppermost layer, the blocking portion 1324 is provided on the second weight 132, and the adjusting member 140 is in position-limiting cooperation with the weight below the second weight 132, The heavy weights located below the second heavy weight 132 are lifted one by one.
  • the adjusting component 140 includes a rotating disk 141 on which a positioning block 142 is provided, and the weight assembly 130 has a positioning groove 135, The matching relationship between the positioning block 142 and the positioning groove 135 is adjusted by rotating the rotary plate 141 to lift or release at least part of the weights of the plurality of weights.
  • the adjusting component 140 further includes a rotating tooth portion 143, which is disposed on the rotating disk 141, so as to drive the rotating disk 141 to rotate by pushing the rotating tooth portion 143.
  • the adjusting component 140 In order to push the rotating tooth portion 143 to rotate, the adjusting component 140 further includes a pushing assembly to push the rotating tooth portion 143 to rotate through the pushing assembly.
  • the pushing assembly includes a sleeve portion 1441 and a locking portion 1442.
  • the sleeve portion 1441 is sleeved on the rotating disk 141, and the locking portion 1442 is provided on On the sleeve portion 1441, at least part of the locking portion 1442 is telescopically arranged in the cavity of the sleeve portion 1441, and the locking portion 1442 is clamped with the rotating tooth portion 143 to push the rotation through the locking portion 1442 when the sleeve portion 1441 rotates.
  • the disk 141 rotates.
  • the locking portion 1442 has a block structure.
  • the pushing assembly further includes a first elastic member 1443 and a mounting seat 1445.
  • the mounting seat 1445 is disposed on the sleeve portion 1441 so that the mounting seat 1445 and the sleeve portion 1441 are relatively fixed; two ends of the first elastic member 1443 are respectively It is fixedly connected with the locking portion 1442 and the mounting seat 1445 so as to enable the locking portion 1442 to expand and contract relative to the mounting seat 1445 in the cavity of the sleeve portion 1441 under the elastic action of the first elastic member 1443.
  • the first elastic member 1443 is a spring.
  • the pushing assembly further includes a first transmission plate 1446 and a second transmission plate 1447.
  • the first transmission plate 1446 is movably arranged along a first predetermined direction
  • the second transmission plate 1447 is movably arranged on the first transmission plate 1446.
  • the second transmission plate 1447 is used for fixed connection with the sleeve portion 1441, so that when the first transmission plate 1446 moves along the first predetermined direction, the first transmission plate 1446 pushes the second transmission plate 1447 and the sleeve portion 1441 to rotate, and the sleeve
  • the cylinder portion 1441 drives the locking portion 1442 to rotate, and the rotation of the locking portion 1442 pushes the rotating disk 141 to rotate.
  • first transmission plate 1446 and the second transmission plate 1447 are both strip-shaped plates, one end of the second transmission plate 1447 is used to movably connect with the first transmission plate 1446, and the other end of the second transmission plate 1447 is used to connect with The sleeve portion 1441 is connected.
  • the first transmission plate 1446 is provided with a first limit post 1448
  • the second transmission plate 1447 has a limit channel 1450
  • the first limit post 1448 passes through the limit channel 1450
  • the first limit post 1448 The outer wall surface of the inner wall of the limiting channel 1450 cooperates with each other to realize that when the first transmission plate 1446 moves along the first predetermined direction, the first transmission plate 1446 pushes the second transmission plate 1447 and the sleeve portion 1441 to rotate.
  • the outer wall surface of the first limiting column 1448 is in contact with the inner wall surface of the limiting channel 1450, and when the first transmission plate 1446 pushes the second transmission plate 1447 and the sleeve portion 1441 to rotate, the second transmission plate 1447 faces each other
  • the first limiting post 1448 moves so that the outer wall surface of the first limiting post 1448 is in sliding contact with the inner wall surface of the limiting channel 1450.
  • the limiting channel 1450 is a strip-shaped hole, and the extending direction of the strip-shaped hole is the same as the extending direction of the second transmission plate 1447; the second transmission plate 1447 moves relative to the first limiting column 1448 along its extending direction.
  • the first transmission plate 1446 is telescopically arranged so that the first transmission plate 1446 has its initial position and its maximum extension position, the second transmission plate 1447 has its initial position and its maximum rotation position; the locking portion 1442 has its relative installation For the initial position and maximum movement position of the seat 1445, when the locking portion 1442 is in its initial position, the first elastic member 1443 is in a free state; when the locking portion 1442 is in its maximum movement position, the first elastic member 1443 is compressed.
  • the locking portion 1442 is in its initial position, that is, the pushing surface of the locking portion 1442 and the tooth surface of the rotating tooth portion 143 abut, so that the pushing assembly is in its initial position.
  • the second transmission plate 1447 When the first transmission plate 1446 is at its maximum extension position, the second transmission plate 1447 is at its maximum rotation position. At this time, the first limiting post 1448 is located at the end of the limiting channel 1450 away from the sleeve portion 1441; at this time, The locking portion 1442 is at its maximum movement position, and the locking portion 1442 is separated from the rotating tooth portion 143.
  • the movement direction of the first transmission plate 1446 when it moves from its initial position to its maximum extension position is the aforementioned first predetermined direction.
  • the first transmission plate 1446 moves from its maximum extension position to its initial position, the first transmission plate 1446 pushes the second transmission plate 1447 and the sleeve portion 1441 to rotate in the opposite direction to the previous one, and the sleeve portion 1441 drives the mounting seat 1445 And the locking portion 1442 rotates in the opposite direction to the previous one; and since the locking portion 1442 is completely separated from the tooth portion 143, and the first elastic member 1443 is compressed, the first elastic member 1443 and the sleeve portion 1441 are under the elastic force of the first elastic member 1443 Under the force of, the locking portion 1442 is close to the rotating tooth portion 143 and abuts against a sliding inclined surface of the rotating tooth portion 143.
  • the locking portion 1442 slides along the sliding inclined surface until it slides to the sliding inclined surface.
  • the pushing surface of the locking portion 1442 again contacts the tooth surface of the next tooth at the end of the sliding inclined surface to restore the locking portion 1442 to its original position; in this process, the second transmission plate 1447 is opposite to the first
  • the limit post 1448 moves, so that the outer wall surface of the first limit post 1448 contacts the inner wall surface of the end of the limit channel 1450 away from the sleeve portion 1441 into contact with the outer wall surface of the first limit post 1448 and the limit channel
  • the inner wall surface of the end of the 1450 close to the sleeve portion 1441 contacts, so that the second transmission plate 1447 returns to its initial position; at this time, the first transmission plate 1446 also returns to its initial position.
  • the “next tooth” mentioned above refers to the tooth body adjacent to the tooth body pushed by the previous locking portion 1442 in the direction opposite to the rotation direction of the rotating disk 141.
  • the pushing assembly further includes a first driving component 1449, which is connected to the first transmission plate 1446 to drive the first transmission plate 1446 to perform telescopic movement.
  • the first driving component 1449 is a driving cylinder or a linear motor.
  • the pushing assembly includes a pawl portion 1451, and the pawl portion 1451 cooperates with the rotating tooth portion 143 to rotate by driving the rotating tooth portion 143
  • the rotating disk 141 is driven to rotate.
  • the pushing assembly further includes a push plate 1452.
  • the push plate 1452 is movably arranged in a second predetermined direction.
  • the pawl portion 1451 is rotatably arranged on the push plate 1452, so that when the push plate 1452 moves in the second predetermined direction, the pawl The portion 1451 rotates relative to the push plate 1452; and during the rotation of the pawl portion 1451, the pawl portion 1451 pushes the rotating disk 141 to rotate.
  • the pushing assembly also includes a second elastic member 1453. Two ends of the second elastic member 1453 are respectively fixedly connected to the pawl portion 1451 and the push plate 1452; during the rotation of the pawl portion 1451 relative to the push plate 1452, the second elastic member 1453 Is compressed.
  • the second elastic member 1453 is a spring.
  • the push plate 1452 is telescopically arranged so that the push plate 1452 has its initial position and maximum extension position.
  • the pawl portion 1451 is also in its relative push.
  • the second elastic member 1453 is in a compressed state, and the pawl portion 1451 is separated from the rotating tooth portion 143.
  • the moving direction of the push plate 1452 when it moves from its initial position to its maximum extended position is the aforementioned second predetermined direction.
  • the “next tooth” mentioned above refers to the tooth body adjacent to the tooth body pushed by the previous pawl portion 1451 in the direction opposite to the rotation direction of the rotating disk 141.
  • a second limiting post 1454 is provided on the push plate 1452, and the pawl portion 1451 is rotatably sleeved on the second limiting post 1454.
  • the pawl portion 1451 includes a first plate body and a second plate body that are connected to each other.
  • the first plate body and the second plate body are arranged at a predetermined angle, and the predetermined angle is greater than 90 degrees and less than 180 degrees;
  • the free end surface forms the pushing surface of the pawl portion 1451, the end of the second plate body away from the first plate body is sleeved on the second limiting post 1454, and the second elastic member 1453 is connected to the first plate body and the second plate body Of the connection.
  • the pushing assembly further includes a second driving part 1455, which is connected to the push plate 1452 to drive the push plate 1452 to perform telescopic movement.
  • the second driving component 1455 is a driving cylinder or a linear motor.
  • the pressure-limiting structure provided in this embodiment is the pressure-limiting structure 101 shown in FIGS. 1 to 5, and the weight component of the pressure-limiting structure 101 in this embodiment is composed of a first weight 131 and a second weight 132
  • the composition constitutes a secondary pressure limiter.
  • the second weight 132 has a threaded mating section 1371 and a smooth mating section 1372 that are connected to each other.
  • the smooth mating section 1372 of the second weight 132 is located above the threaded mating section 1371; the first weight 131 is provided with a second
  • the threaded fitting portion 1373 of the threaded fitting section 1371 of the weight 132 is matched, so that when the first weight 131 and the second weight 132 are both in the initial state, the threaded portion 1373 of the first weight 131 and the second weight
  • the threaded fitting section 1371 of 132 is matched to make the threaded connection between the first weight 131 and the second weight 132; when the first weight 131 is in its raised state, the threaded fitting portion 1373 of the first weight 131 is located
  • the smooth surface of the second weight 132 fits into the section 1372.
  • the threaded fitting section 1371 is a threaded hole section
  • the smooth fitting section 1372 is a smooth hole section
  • the threaded hole section of the second weight 132 communicates with the smooth hole section
  • the threaded fitting portion 1373 is an external threaded portion.
  • the aperture of the threaded mating section 1371 is smaller than the aperture of the smooth mating section 1372; the threaded mating portion 1373 is arranged on the corresponding weight The flange part.
  • the fixing plate 110 is also provided with an escape hole 113 for giving way to the exhaust pipe 104
  • the first weight 131 is provided with a first escape hole 1314 for making way for the exhaust pipe 104
  • the hammer 132 is provided with a second concession hole 1325 for giving way to the exhaust pipe 104, so that the exhaust pipe 104 is inserted in the avoidance hole 113, the first concession hole 1314 and the second concession hole 1325 in sequence.
  • both the second relief hole 1325 and the first relief hole 1314 and the first relief hole 1314 and the relief hole 113 are connected.
  • the inner wall of the second clearance hole 1325 is provided with internal threads
  • the outer wall of the exhaust pipe 104 is provided with external threads, so that the exhaust pipe 104 and the second weight 132 are threadedly connected, so that the exhaust pipe 104 and the second weight 132 are relatively fixed.
  • the first weight 131 and the adjustment member 140 are in position-limiting cooperation, so as to lift the first weight 131 through the cooperation between the first weight 131 and the adjustment member 140.
  • the blocking portion 1324 is located in the second relief hole 1325.
  • the rotating disk 141 is rotatably sleeved on the outer side of the first weight 131 so that the rotating disk 141 rotates relative to the first weight 131; the second weight 132 and the adjustment member 140 are spaced apart.
  • positioning block 142 there is one positioning block 142, and there are multiple positioning grooves 135. At least two positioning grooves 135 of the plurality of positioning grooves 135 have a depth difference in the vertical direction, so that the positioning block 142 is inserted in the corresponding positioning. The height of at least part of the weights among the plurality of weights is raised in the groove 135. That is, during the rotation of the positioning block 142 with the rotating disk 141, the positioning block 142 moves from the positioning groove 135 with a deeper depth to the positioning groove 135 with a shallow depth to lift at least part of the weights of the plurality of weights. The positioning block 142 then moves from the shallow positioning groove 135 to the deeper positioning groove 135 to release at least part of the heavy hammers.
  • the positioning block 142 with a higher height among the plurality of positioning blocks 142 moves from the corresponding deep positioning groove 135 to the corresponding shallow depth.
  • the positioning groove 135 to raise the height of at least part of the heavy hammers the positioning block 142 with a higher height in the plurality of positioning blocks 142 then moves from the corresponding positioning groove 135 with a shallower depth to
  • the deep positioning groove 135 is used to release at least part of the heavy hammers.
  • the positioning groove 135 is a strip-shaped groove.
  • the top wall of the positioning groove 135 gradually extends in the vertical direction; the positioning block 142 is inserted in the positioning groove 135 so that when the rotating disk 141 rotates .
  • the positioning block 142 is inserted in the positioning groove 135 so that when the rotating disk 141 rotates .
  • a first positioning block 1421 is provided on the surface of the rotating disk 141, a first positioning slot 1351 is provided on the first weight 131, and the rotating disk 141 has an initial position and a first working position.
  • the rotating disk 141 when the rotating disk 141 is at the initial position, the first weight 131 and the second weight 132 are locked with each other, and the first positioning block 1421 is located in the first positioning groove 1351, so that the first weight The hammer 131 and the second weight 132 are at the same time in the initial state of applying their gravity to the exhaust pipe 104; when the rotating disk 141 is in the first working position, the first weight 131 and the second weight 132 are mutually unlocked When the first positioning block 1421 is moved out of the first positioning slot 1351, the first weight 131 is lifted, so that the first weight 131 is in a lifted state that separates its gravity from the exhaust pipe 104.
  • the rotating disk 141 when the rotating disk 141 is in the initial position, the first weight 131 and the second weight 132 are threadedly connected; when the rotating disk 141 is in the first working position, the first weight 131 and the second weight 132 The threaded connection between is in an unlocked state.
  • the first weight 131 is provided with a second positioning groove 1352, the depth of the second positioning groove 1352 is smaller than the depth of the first positioning groove 1351; when the rotating disk 141 is in the first working position, the first positioning The block 1421 is locked in the second positioning slot 1352.
  • a second positioning block 1422 is provided on the surface of the rotating disk 141, and the second positioning block 1422 is matched with the second positioning groove 1352; when the rotating disk 141 is in the initial position, the second positioning block 1422 is clamped In the second positioning groove 1352.
  • a first positioning groove group is provided on the first weight 131.
  • the first positioning groove group includes a pair of first positioning groove 1351 and a second positioning groove 1352.
  • the first weight 131 is arranged at intervals in the circumferential direction;
  • a first positioning block group is arranged on the rotating disk 141, the first positioning block group includes a pair of first positioning blocks 1421 and a second positioning block 1422, the pair of first positioning The block 1421 and the second positioning block 1422 are arranged at intervals along the circumferential direction of the rotating disk 141.
  • a plurality of first positioning groove groups are provided on the first weight 131, and the plurality of first positioning groove groups are arranged at intervals along the circumferential direction of the first weight 131; a set of first positioning groove groups are provided on the rotating disk 141 Block group.
  • the first positioning block 1421 is located in the first positioning groove 1351 of one of the plurality of first positioning groove groups, and the second positioning block 1422 is located in the second positioning groove 1352 of the first positioning groove group. So that the first weight 131 is in an initial state where its gravity acts on the exhaust pipe 104.
  • the first heavy hammer 131 After the first heavy hammer 131 enters the smooth mating section 1372 of the second heavy hammer 132, the first heavy hammer 131, The lower flange of the threaded fitting portion 1373 of a heavy hammer 131 will be caught on the upper flange of the threaded fitting section 1371 of the second heavy hammer 132, so that the first heavy hammer 131 is hung on the second heavy hammer 132, so The gravity of the first weight 131 continues to be pressed on the exhaust pipe 104 by the second weight 132.
  • both the first positioning block 1421 and the second positioning block 1422 rotate with the rotating disk 141.
  • the positioning block 1421 moves into the second positioning groove 1352 of the first positioning groove group, and the first positioning block 1421 is inserted into the second positioning groove 1352 to lift the first weight 131 to make the first weight 131 In its raised state;
  • the second positioning block 1422 moves to the first positioning groove 1351 of the first positioning groove group adjacent to the first positioning groove group and makes it at least partially inserted in the first positioning groove 1351.
  • the second positioning block 1422 moves to the second positioning groove 1352 of the first positioning groove group adjacent to the first positioning groove group and is inserted in this first positioning groove group.
  • Two positioning slots 1352 Two positioning slots 1352.
  • a plurality of first positioning groove groups are provided on the first weight 131, and the plurality of first positioning groove groups are arranged at intervals along the circumferential direction of the first weight 131; and a plurality of first positioning groove groups are provided on the rotating disk 141.
  • a block group, a plurality of first positioning block groups and a plurality of first positioning groove groups are arranged in one-to-one correspondence, and the first positioning block 1421 and the second positioning block 1422 in each first positioning block group are inserted in one-to-one correspondence.
  • the rotating disk 141 is in its initial position.
  • the first weight 131 or the second positioning groove 1352 is screwed to make the threaded connection between the first weight 131 and the second weight 132 in an unlocked state, even if the first weight 131 is
  • the weight 131 enters the smooth mating section 1372 of the second weight 132; the rotating disk 141 is then rotated to rotate relative to the first weight 131.
  • each first positioning when the block 1421 moves into the second positioning groove 1352 of the corresponding first positioning groove group and lifts the first weight 131, the first weight 131 is in its raised state; at this time, each second positioning block 1422 moves to In the first positioning groove 1351 of the first positioning groove group adjacent to the corresponding first positioning groove group, so that the rotating disk 141 is in its first working position.
  • each second positioning block 1422 moves into the second positioning groove 1352 of the first positioning groove group adjacent to the corresponding first positioning groove group.
  • the first positioning block 1421 and the second positioning block 1422 are both cone-shaped structures. Along the direction away from the rotating disk 141, the cross-sectional areas of the first positioning block 1421 and the second positioning block 1422 are gradually reduced. , So that the first positioning block 1421 and the second positioning block 1422 are moved out of the first positioning groove 1351 and the second positioning groove 1352 respectively; wherein, the cross-sectional area of the first positioning block 1421 and the second positioning block 1422 refer to The area of the cross section perpendicular to the center direction of the rotating disk 141.
  • This embodiment also provides a pressure cooker.
  • the pressure cooker includes an exhaust pipe 104 and the above-mentioned pressure limiting structure 101, and the pressure limiting structure 102 is provided on the exhaust pipe 104.
  • the pressure limiting structure 102 provided in this embodiment, its weight assembly is composed of a first weight 131, a second weight 132, and a third weight 133 to form a three-stage pressure limiting structure.
  • the pressure limiting structure 102 in the second embodiment The difference from the pressure limiting structure 101 in the first embodiment is as follows:
  • the third weight 133 is set between the first weight 131 and the second weight 132; a third positioning block 1423 is provided on the surface of the rotating disk 141, and the third positioning block 1423 is provided On the outer side of the first positioning block 1421, a third positioning groove 1353 is provided on the third weight 133, and the third positioning groove 1353 extends along the circumferential direction of the third weight 133.
  • the rotating disk 141 also includes a second working position.
  • the initial position, the first working position, and the second working position are sequentially arranged along the rotation direction of the rotating disk 141; wherein, when the rotating disk 141 is located at the initial position and the first working position Position, the third weight 133 and the second weight 132 are locked with each other, and the third positioning block 142 is located in the third positioning groove 1353, so that the third weight 133 is in the position to exert its gravity on the exhaust pipe 104 is the initial state; when the rotating disk 141 moves to the second working position, the third weight 133 and the second weight 132 are in a mutually unlocked state, the third positioning block 142 is moved out of the third positioning groove 1353 to lift the first Triple hammer 133.
  • the first weight 131 is also provided with a fourth positioning groove 1354, and the depth of the fourth positioning groove 1354 is smaller than the depth of the first positioning groove 1351; when the rotating disk 141 is in the second working position, the first positioning block 1421 It is locked in the fourth positioning slot 1354.
  • a fourth positioning block 1424 is provided on the rotating disk 141, and the fourth positioning block 1424 is matched with the fourth positioning groove 1354; when the rotating disk 141 is in the initial position, the fourth positioning block 1424 is located in the fourth positioning groove 1354 .
  • the height of the fourth positioning block 1424 is the same as the height of the second positioning block 1422.
  • the second weight 132 is threadedly connected with the third weight 133, so that the third weight 133 and the second weight 132 are relatively fixed, so that the third weight is relatively fixed.
  • 133 is placed on the exhaust pipe 104 by the weight of the second weight 132; the first weight 131 and the third weight 133 are threadedly connected, so that the first weight 131 and the third weight 133 are relatively fixed, and then The first weight 131 passes through the third weight 133 and the second weight 132 to press the weight on the exhaust pipe 104 by gravity.
  • the threaded connection between the first weight 131 and the third weight 133 is in an unlocked state, and the second weight 132 and the third weight 133 are threadedly connected; when the rotating disk 141 is in the In the second working position, the threaded connection between the first weight 131 and the third weight 133 is in an unlocked state, and the threaded connection between the second weight 132 and the third weight 133 is in an unlocked state.
  • the second weight 132 is sleeved on the third weight 133, and the third weight 133 is sleeved on the first weight 131;
  • the second weight 132 has an interconnected threaded fitting section 1371 and a light
  • the surface fitting section 1372, the smooth fitting section 1372 of the second weight 132 is located above the thread fitting section 1371, and the third weight 133 is provided with a thread fitting portion for mating with the thread fitting section 1371 of the second weight 132 1373;
  • the third weight 133 also has a threaded fitting section 1371 and a smooth fitting section 1372 that are connected to each other.
  • the smooth fitting section 1372 of the third weight 133 is located above the threaded fitting section 1371, and the first weight 131 is provided There is a threaded fitting portion 1373 for mating with the threaded fitting section 1371 of the third weight 133.
  • the threaded fitting section 1371 of the second weight 132 is a threaded hole section
  • the smooth fitting section 1372 of the second weight 132 is a smooth hole section
  • the threaded hole section and the smooth hole section of the second weight 132 The threaded fitting portion 1373 of the third weight 133 is an external thread portion; the threaded fitting section 1371 of the third weight 133 is a threaded rod section, and the smooth fitting section 1372 of the third weight 133 is a polished rod section.
  • the threaded part 1373 of the weight 131 is an internal threaded part.
  • the aperture of the threaded fitting section 1371 of the second weight 132 is smaller than the aperture of the smooth fitting section 1372, and the third weight 133
  • the threaded fitting portion 1373 is a flange portion provided on the third weight 133.
  • the threaded fitting section 1371 of the third weight 133 is a flange portion provided on the third weight 133.
  • the third weight 133 has a third limiting rod 1331, and the threaded fitting section 1371 and the smooth matching section 1372 of the third weight 133 are both located on the third limiting rod 1331.
  • the threaded fitting portion 1373 of the first weight 131 is located in the first clearance hole 1314, so that when the threaded fitting portion 1373 of the first weight 131 is engaged with the threaded fitting portion 1371 of the third weight 133, the third limit rod At least part of 1331 is inserted into the first relief hole 1314.
  • the third weight 133 has a third relief hole 1332, and the third relief hole 1332 is located on the third limiting rod 1331, so that the exhaust pipe 104 penetrates the relief hole 113 and the first relief hole in sequence. 1314.
  • the third relief hole 1332 and the second relief hole 1325 In the third relief hole 1332 and the second relief hole 1325.
  • between the second relief hole 1325 and the third relief hole 1332, between the third relief hole 1332 and the first relief hole 1314, and between the first relief hole 1314 and the relief hole 113 are all connected .
  • a second positioning groove group is provided on the first weight 131, and the second positioning groove group includes first positioning grooves 1351, second positioning grooves 1352, and fourth positioning grooves 1354 arranged at intervals along the circumferential direction of the first weight 131.
  • a second positioning block group is provided on the rotating disk 141, and the second positioning block group includes a first positioning block 1421, a second positioning block 1422, and a fourth positioning block 1424 arranged at intervals along the circumference of the rotating disk 141 in sequence.
  • a plurality of second positioning groove groups are provided on the first weight 131, and the plurality of second positioning groove groups are arranged at intervals along the circumferential direction of the first weight 131; a set of second positioning groove groups are provided on the rotating disk 141 A block group and a third positioning block 1423; a plurality of third positioning grooves 1353 are provided on the third weight 133, and the plurality of third positioning grooves 1353 are arranged at intervals along the circumferential direction of the third weight 133.
  • the first positioning block 1421 is located in the first positioning groove 1351 of one of the second positioning groove groups, and the second positioning block 1422 is located in the second positioning groove.
  • the fourth positioning block 1424 is located in the fourth positioning groove 1354 of the second positioning groove group, so that the first weight 131 is in its initial state;
  • the third positioning blocks 1423 are located in a plurality of Inside one of the third positioning grooves 1353 of the third positioning grooves 1353, the first weight 131 and the third weight 133 are in the initial state of exerting its gravity on the exhaust pipe 104.
  • the first weight 131 or the third weight 133 is screwed to make the threaded connection between the first weight 131 and the third weight 133 in an unlocked state, even if the first weight
  • the heavy hammer 131 is located at the smooth mating section 1372 of the third heavy hammer 133.
  • the first heavy hammer 131 is The lower flange of the threaded fitting portion 1373 of the weight 131 will be caught on the upper flange of the threaded fitting section 1371 of the third weight 133, so that the first weight 131 is hung on the third weight 133.
  • the gravity of the weight 131 continues to be pressed on the exhaust pipe 104 through the third weight 133 and the second weight 132.
  • the blocks 1424 all rotate with the rotating disk 141; when the rotating disk 141 rotates relative to the first weight 131 and rotates to its first working position, the first positioning block 1421 moves into the second positioning groove 1352 of the second positioning groove group , The first positioning block 1421 is inserted into the second positioning groove 1352 to lift the first weight 131, so that the first weight 131 is in its raised state; the second positioning block 1422 moves to the second positioning groove group
  • the fourth positioning groove 1354 is at least partially inserted into the fourth positioning groove 1354, and the fourth positioning block 1424 moves to the first positioning groove 1351 of the second positioning groove group adjacent to the second positioning groove group.
  • the third positioning block 1423 moves in the third positioning groove 1353 where it is located, and is maintained in the third positioning groove 1353 , So that the third weight 133 maintains its initial state.
  • the lower flange of the threaded fitting portion 1373 of the triple weight 133 will be caught on the upper flange of the threaded portion 1371 of the second weight 132, so that the third weight 133 is hung on the second weight 132, so The gravity of the third weight 133 continues to be pressed on the exhaust pipe 104 by the second weight 132.
  • the first positioning block 1421 moves to this In the fourth positioning groove 1354 of the second positioning groove group, the first positioning block 1421 is inserted in the fourth positioning groove 1354 to maintain its lifting state of the first weight 131, and the second positioning block 1422 moves to The first positioning groove 1351 of the second positioning groove group adjacent to the second positioning groove group is at least partially inserted into the first positioning groove 1351, and the fourth positioning block 1424 moves to the second positioning groove group.
  • the second positioning groove 1352 of the adjacent second positioning groove set is at least partially inserted into the second positioning groove 1352; during this rotation, at least part of the third positioning block 1423 is removed from the second positioning groove 1352 where it is located. Move out of the three positioning groove 1353 so that the third positioning block 1423 is located outside the third positioning groove 1353 and contacts the bottom wall of the third weight 133 to lift the third weight 133 so that the third weight 133 is in position Its uplifted state.
  • the second positioning block 1422 moves to the second positioning groove 1352 of the second positioning groove group adjacent to the second positioning groove group and is inserted into the second positioning groove group.
  • the fourth positioning block 1424 moves into the fourth positioning groove 1354 of the second positioning groove group adjacent to the second positioning groove group and is inserted into this fourth positioning groove 1354; third positioning The block 1423 moves into the third positioning groove 1353 adjacent to the third positioning groove 1353 and is inserted into the adjacent third positioning groove 1353 to restore the third weight 133 to its initial state.
  • a plurality of second positioning groove groups are provided on the first weight 131, and the plurality of second positioning groove groups are arranged at intervals along the circumferential direction of the first weight 131; and a plurality of second positioning groove groups are provided on the rotating disk 141.
  • a block group and a plurality of third positioning blocks 1423, and the plurality of third positioning blocks 1423 are arranged on the outer side of the first positioning block 1421 of the plurality of second positioning block groups in a one-to-one correspondence; the plurality of second positioning block groups and the plurality of The second positioning groove groups are arranged in one-to-one correspondence, and the first positioning block 1421, the second positioning block 1422, and the fourth positioning block 1424 in each second positioning block group are inserted in the corresponding second positioning groove group in a one-to-one correspondence.
  • a plurality of third positioning grooves 1353 are provided on the third weight 133, and the plurality of third positioning grooves 1353 are along the third weight 133 Circumferentially arranged at intervals, a plurality of third positioning blocks 1423 are inserted in the plurality of third positioning grooves 1353 in a one-to-one correspondence.
  • FIG. 6 shows a schematic diagram of the state in which the rotating disk 141 of the pressure limiting structure 102 is in its initial position; each first positioning block 1421 is located in the corresponding second positioning groove In the first positioning groove 1351 of the group, each second positioning block 1422 is located in the second positioning groove 1352 of the corresponding second positioning groove group, and each fourth positioning block 1424 is located in the fourth position of the corresponding second positioning groove group.
  • the positioning groove 1354 the first weight 131 is in its initial state; each third positioning block 1423 is located in the corresponding third positioning groove 1353, so that the third weight 133 is in its initial state.
  • the first weight 131 or the third weight 133 is screwed to make the threaded connection between the first weight 131 and the third weight 133 in an unlocked state, even if the first weight
  • the weight 131 is located in the smooth mating section 1372 of the third weight 133; the rotating disk 141 is then rotated to rotate relative to the first weight 131.
  • each first positioning block 1421 moves into the second positioning groove 1352 of its corresponding second positioning groove group to lift the first heavy hammer 131 to make the first The weight 131 is in a raised state; each second positioning block 1422 moves into the fourth positioning slot 1354 of its corresponding second positioning slot group, and each fourth positioning block 1424 moves to be adjacent to its corresponding second positioning slot group In the first positioning groove 1351 of the second positioning groove group, during this rotation, each third positioning block 1423 moves in the corresponding third positioning groove 1353, and is maintained in the corresponding third positioning groove 1353, so that the first The triple hammer 133 maintains its initial state.
  • each first positioning block 1421 moves into the fourth positioning groove 1354 of its corresponding second positioning groove group to maintain the raised state of the first weight 131.
  • the second positioning block 1422 moves into the first positioning groove 1351 of the second positioning groove group adjacent to its corresponding second positioning groove group, and each fourth positioning block 1424 moves to the first positioning groove 1351 of the second positioning groove group adjacent to its corresponding second positioning groove group.
  • the second positioning groove 1352 of the second positioning groove group during this rotation, at least part of each third positioning block 1423 is moved out of the corresponding third positioning groove 1353, so that each third positioning block 1423 is located in the corresponding third positioning block 1423.
  • the outer side of the three positioning groove 1353 is in contact with the bottom wall of the third weight 133 to lift the third weight 133 so that the third weight 133 is in its raised state.
  • each first positioning block 1421 moves to the first positioning groove 1351 of the second positioning groove group adjacent to the corresponding second positioning groove group, so that the first weight 131 can return to its initial state
  • the second positioning block 1422 moves to the second positioning groove 1352 of the second positioning groove group adjacent to its corresponding second positioning groove group
  • the fourth positioning block 1424 moves to the second positioning groove group corresponding to it In the fourth positioning groove 1354 of the adjacent second positioning groove group
  • each third positioning block 1423 moves into the third positioning groove 1353 adjacent to its corresponding third positioning groove 1353 to restore the third weight 133 Its second initial state.
  • the first positioning block 1421, the second positioning block 1422, the third positioning block 1423, and the fourth positioning block 1424 are all cone-shaped structures. In the direction away from the rotating disk 141, the first positioning block 1421, the second positioning block 1421 The cross-sectional areas of the second positioning block 1422, the third positioning block 1423, and the fourth positioning block 1424 are gradually reduced to facilitate the first positioning block 1421, the second positioning block 1422, the third positioning block 1423, and the fourth positioning block 1424 Respectively move out from the first positioning groove 1351, the second positioning groove 1352, the third positioning groove 1353, and the fourth positioning groove 1354; among them, the first positioning block 1421, the second positioning block 1422, the third positioning block 1423, and the fourth positioning block 1354
  • the cross-sectional area of the positioning block 1424 all refers to the area of the cross-section perpendicular to the center of the rotating disk 141.
  • This embodiment also provides a pressure cooker.
  • the pressure cooker includes an exhaust pipe 104 and the above-mentioned pressure limiting structure 102, and the pressure limiting structure 102 is provided on the exhaust pipe 104.
  • the pressure-limiting structure includes a weight assembly 130 and an adjustment component 140.
  • the blocking portion 1324 of the weight assembly 130 is used to be inserted into the nozzle of the exhaust pipe 104 to prevent the exhaust pipe 104 from being inserted.
  • the weight assembly 130 includes a plurality of weight hammers, which are sequentially stacked in a vertical direction, so as to achieve a pressure limiting effect through the plurality of weight hammers; the adjustment member 140 and at least one of the plurality of weight hammers Part of the weight transmission cooperation, that is, through the cooperation between the adjusting member 140 and at least part of the weights of the multiple weights, at least part of the weights of the multiple weights can be lifted, and then the weights can be lifted by the At least part of the weights of the hammers are used to adjust the number of weights placed on the exhaust pipe 104, that is, the number of weights placed on the exhaust pipe 104 is adjusted to achieve multi-level pressure limitation;
  • the pressure structure is applied in the pressure cooker to limit the pressure of the pressure cooker, which can realize the multi-level pressure limitation of the pressure cooker, so as to realize the multi-level pressure protection of the pressure cooker and various cooking effects, thereby solving the pressure limitation of the pressure cooker in some embodiments.
  • the method cannot achieve the problem
  • two adjacent weights are detachably connected, so that two adjacent weights can be locked or unlocked; when two adjacent weights are in a locked state, the two adjacent weights None of the heavy hammers can be lifted, and only when the two adjacent heavy hammers are in the unlocked state, the two adjacent heavy hammers will be lifted.
  • spatial relative terms can be used here, such as “above”, “above”, “above the surface”, “above”, etc., to describe as shown in the figure Shows the spatial positional relationship between one device or feature and other devices or features. It should be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation of the device described in the figure. For example, if the device in the drawing is turned upside down, then a device described as “above other devices or structures” or “above other devices or structures” will then be positioned as “below the other devices or structures” or “on Under other devices or structures”. Thus, the exemplary term “above” may include both orientations “above” and “below”. The device can also be positioned in other different ways (rotated by 90 degrees or in other orientations), and the relative description of the space used here will be explained accordingly.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • One-Way And Automatic Clutches, And Combinations Of Different Clutches (AREA)
  • Commercial Cooking Devices (AREA)

Abstract

一种限压结构（101）及具有其的压力锅，限压结构（101）包括重锤组件（130）和调节部件（140），重锤组件（130）具有用于插设在排气管（104）的管口内的封堵部（1324）；重锤组件（130）包括多个重锤（131，132，133），多个重锤（131，132，133）沿竖直方向依次叠置，相邻两个重锤（131，132，133）之间可拆卸地连接；调节部件（140）与多个重锤（131，132，133）中的至少部分的重锤（131，132，133）传动配合，以通过抬升多个重锤（131，132，133）中的至少部分的重锤（131，132，133）调整压设在排气管固定板（110）上的重锤（131，132，133）的数量；即通过调整压设在排气管（104）上的重锤（131，132，133）的数量来实现多级别限压；限压结构（101）应用在压力锅中以对压力锅进行限压，即可实现对压力锅的多级别限压，从而解决压力锅的限压方式不能实现多级限压的问题。

Description

限压结构及具有其的压力锅
本申请要求于2020年4月9日提交至中国国家知识产权局、申请号为202010275651.7、发明名称为“限压结构及具有其的压力锅”的专利申请的优先权。
技术领域
本申请涉及家用电器技术领域，具体而言，涉及一种限压结构及具有其的压力锅。
背景技术
高压锅又叫压力锅，压力煲，是一种厨房的锅具。压力锅通过液体在较高气压沸点会提升这一物理现象，对水施加压力，使水可以达到较高温度而不沸腾，以加快炖煮食物的效率。用它可以将被蒸煮的食物加热到100℃以上，在高海拔地区，利用高压锅可以避免水沸点降低而不易煮熟食物的问题。
然而，现有的压力锅通过在排气管上设置一个重量固定的限压阀来限压，但是这种限压方式并不能实现多级限压。
发明内容
本申请的主要目的在于提供一种限压结构及具有其的压力锅，以解决在一些实施例中的压力锅的限压方式不能实现多级限压的问题。
为了实现上述目的，根据本申请的一个方面，提供了一种限压结构，其包括：重锤组件，重锤组件具有用于插设在排气管的管口内的封堵部；重锤组件包括多个重锤，多个重锤沿竖直方向依次叠置；调节部件，调节部件与多个重锤中的至少部分的重锤传动配合，以通过抬升多个重锤中的至少部分的重锤调整压设在排气管上的重锤的数量；其中，相邻两个重锤之间可拆卸地连接。
进一步地，相邻两个重锤之间螺纹连接；各个重锤均具有将其重力与排气管脱离的抬升状态，在各个重锤处于抬升状态时，该重锤与其相邻的重锤之间的螺纹连接处于解锁状态。
进一步地，多个重锤包括位于最下层的第一重锤，位于第一重锤上方的各个重锤均具有相互连接的螺纹配合段和光面配合段，各个光面配合段位于相应的螺纹配合段的上方；各个重锤上均设置有与位于该重锤上方的重锤的螺纹配合段相配合的螺纹配合部；当各个重锤处于初始状态时，该重锤的螺纹配合部与该重锤上方的重锤的螺纹配合段相配合；当各个重锤处于抬升状态时，该重锤的螺纹配合部位于该重锤上方的重锤的光面配合段内。
进一步地，多个重锤包括位于最上层的第二重锤，封堵部设置在第二重锤上；调节部件与位于第二重锤下方的重锤均限位配合，以逐个抬升位于第二重锤下方的各个重锤。
进一步地，调节部件包括旋转盘，旋转盘上设置有定位块，重锤组件具有定位槽，以通过转动旋转盘调整定位块与定位槽之间的配合关系，以抬升或释放多个重锤中的至少部分的重锤。
进一步地，定位块为一个，定位槽为多个，多个定位槽中的至少两个定位槽具有沿竖直方向的深度差，以通过使定位块插设在相应的定位槽内抬升多个重锤中的至少部分的重锤的高度；或者，定位块和定位槽均为多个，多个定位块和多个定位槽均沿旋转盘的周向布置；多个定位块中的至少两个定位块具有竖直方向的高度差，多个定位槽中的至少两个定位槽具有沿竖直方向的深度差，以通过使各个定位块插设在相应的定位槽内抬升多个重锤中的至少部分的重锤的高度。
进一步地，定位槽为条形槽，沿旋转盘的转动方向，定位槽的顶壁沿竖直方向逐渐延伸；定位块插设在定位槽内，以在旋转盘转动时，通过定位块的顶壁与定位槽的顶壁之间的配合抬升或释放多个重锤中的至少部分的重锤。
进一步地，调节部件还包括转齿部，转齿部设置在旋转盘上，以通过推动转齿部带动旋转盘转动。
进一步地，调节部件还包括套筒部和锁定部，套筒部套设在旋转盘上，锁定部设置在套筒部上，锁定部的至少部分可伸缩地设置在套筒部的腔体内，锁定部与转齿部卡接，以在套筒部转动时通过锁定部推动旋转盘转动；或者，棘爪部，棘爪部与转齿部相配合，以通过驱动转齿部转动带动旋转盘转动。
进一步地，多个重锤包括第二重锤，封堵部设置在第二重锤上；第一重锤，第一重锤的至少部分位于第二重锤的下方；旋转盘，旋转盘的盘面上设置有第一定位块，第一重锤上设置有第一定位槽，旋转盘具有初始位置和第一工作位置；其中，当旋转盘位于初始位置时，第一重锤与第二重锤之间处于相互锁定状态，第一定位块位于第一定位槽内，以使第一重锤和第二重锤同时处于将其重力作用于排气管的初始状态；当旋转盘处于第一工作位置时，第一重锤和第二重锤之间处于相互解锁状态，第一定位块由第一定位槽移出时以抬升第一重锤，以使第一重锤处于将其重力与排气管脱离的抬升状态。
进一步地，当旋转盘位于初始位置时，第一重锤与第二重锤之间螺纹连接；当旋转盘位于第一工作位置时，第一重锤与第二重锤之间的螺纹连接处于解锁状态。
进一步地，第一重锤上设置有第二定位槽，第二定位槽的深度小于第一定位槽的深度；当旋转盘处于第一工作位置时，第一定位块卡设在第二定位槽内。
进一步地，旋转盘的盘面上设置有第二定位块，第二定位块与第二定位槽相配合；当旋转盘处于初始位置时，第二定位块卡设在第二定位槽内。
进一步地，多个重锤还包括第三重锤，第三重锤设置在第一重锤和第二重锤之间；旋转盘的盘面上设置有第三定位块，第三定位块设置在第一定位块的外侧，第三重锤上设置有第三定位槽，第三定位槽沿第三重锤的周向延伸；旋转盘还包括第二工作位置，初始位置、第 一工作位置和第二工作位置沿旋转盘的转动方向依次设置；其中，当旋转盘位于初始位置和第一工作位置时，第三重锤与第二重锤之间处于相互锁定状态，第三定位块位于第三定位槽内，以使第三重锤处于将其重力作用于排气管的初始状态；当旋转盘运动至第二工作位置时，第三重锤与第二重锤之间处于相互解锁状态，第三定位块由第三定位槽移出以抬升第三重锤。
进一步地，第一重锤上设置有第四定位槽，第四定位槽的深度小于第一定位槽的深度；当旋转盘处于第二工作位置时，第一定位块卡设在第四定位槽内。
进一步地，旋转盘上设置有第四定位块，第四定位块与第四定位槽相配合；当旋转盘处于初始位置时，第四定位块位于第四定位槽内。
进一步地，当旋转盘位于初始位置时，第一重锤与第三重锤螺纹连接，第二重锤与第三重锤螺纹连接；当旋转盘处于第一工作位置时，第一重锤与第三重锤之间的螺纹连接处于解锁状态，第二重锤与第三重锤螺纹连接；当旋转盘处于第二工作位置时，第一重锤与第三重锤之间的螺纹连接处于解锁状态，第二重锤与第三重锤之间的螺纹连接处于解锁状态。
进一步地，限压结构还包括固定板，固定板上设置有定位孔和用于避让排气管的避让孔；其中，多个重锤包括位于最下层的第一重锤，第一重锤上设置有用于插设在定位孔内的定位柱。
根据本申请的另一方面，提供了一种压力锅，其包括排气管和上述的限压结构，该限压结构用于将重力压设在排气管上。
应用本申请的技术方案，在本申请的限压结构中，限压结构包括重锤组件和调节部件，重锤组件的封堵部用于插设在排气管的管口内，以对排气管形成封堵效果；重锤组件包括多个重锤，多个重锤沿竖直方向依次叠置，以通过多个重锤起到限压作用；调节部件与多个重锤中的至少部分的重锤传动配合，即通过调节部件与多个重锤中的至少部分的重锤之间的配合作用，能够抬升多个重锤中的至少部分的重锤，进而通过抬升多个重锤中的至少部分的重锤来调整压设在排气管上的重锤的数量，即通过调整压设在排气管上的重锤的数量来实现多级别限压；将该限压结构应用在压力锅中以对压力锅进行限压，即可实现对压力锅的多级别限压，以实现压力锅的多级别压力保护和多种烹饪效果，从而解决在一些实施例中的压力锅的限压方式不能实现多级限压的问题。
另外，相邻两个重锤之间可拆卸地连接，以使相邻两个重锤之间能够锁定或解锁；当相邻两个重锤之间处于锁定状态时，则该相邻两个重锤均不能被抬升，只有当相邻两个重锤之间处于解锁状态时，该相邻两个重锤才会被抬升。
附图说明
构成本申请的一部分的说明书附图用来提供对本申请的进一步理解，本申请的示意性实施例及其说明用于解释本申请，并不构成对本申请的不当限定。在附图中：
图1示出了根据本申请的实施例一中的限压结构和排气管的配合结构示意图；
图2示出了图1中的限压结构和排气管的配合结构的内部剖视图；
图3示出了图1中的限压结构的第一重锤和固定板的配合结构示意图；
图4示出了图1中的限压结构的第一重锤和第二重锤的爆炸结构示意图；
图5示出了图1中的限压结构的旋转盘处于初始位置时的状态示意图；
图6示出了根据本申请的实施例二中的限压结构和排气管的配合结构示意图；
图7示出了图6中的限压结构和排气管的配合结构的内部剖视图；
图8示出了图6中的限压结构和排气管的爆炸结构示意图；
图9示出了图6中的限压结构的调节部件的定位块的分布结构示意图；
图10示出了图6中的限压结构的第一重锤的结构示意图；
图11示出了图6中的限压结构的旋转盘处于第一工作位置时的状态示意图；
图12示出了图6中的限压结构的旋转盘处于第二工作位置时的状态示意图；
图13示出了根据本申请的可选的一种限压结构的结构示意图；
图14示出了图13中的限压结构的调节部件的推动组件处于其初始位置时的状态示意图；
图15示出了图13中的限压结构的调节部件的推动组件推动旋转盘转动的过程示意图；
图16示出了根据本申请的可选的另一种限压结构的结构示意图；
图17示出了图16中的限压结构的调节部件的推动组件处于其初始位置时的状态示意图；
图18示出了图16中的限压结构的调节部件的推动组件推动旋转盘转动的过程示意图。
其中，上述附图包括以下附图标记：
101、限压结构；104、排气管；
110、固定板；112、定位孔；113、避让孔；
130、重锤组件；
131、第一重锤；1312、定位柱；1314、第一让位孔；
132、第二重锤；1324、封堵部；1325、第二让位孔；
135、定位槽；1351、第一定位槽；1352、第二定位槽；
1371、螺纹配合段；1372、光面配合段；1373、螺纹配合部；
140、调节部件；141、旋转盘；143、转齿部；
142、定位块；1421、第一定位块；1422、第二定位块；
1441、套筒部；1442、锁定部；1443、第一弹性件；1445、安装座；1446、第一传动板；1447、第二传动板；1448、第一限位柱；1449、第一驱动部件；1450、限位通道；
1451、棘爪部；1452、推板；1453、第二弹性件；1454、第二限位柱；1455、第二驱动部件；
102、限压结构；
133、第三重锤；1331、第三限位杆；1332、第三让位孔；
1353、第三定位槽；1354、第四定位槽；
1423、第三定位块；1424、第四定位块。
具体实施方式
需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互组合。下面将参考附图并结合实施例来详细说明本申请。
本申请提供了一种限压结构，请参考图1至图18，限压结构包括重锤组件130和调节部件140，重锤组件130具有用于插设在排气管104的管口内的封堵部1324；重锤组件130包括多个重锤，多个重锤沿竖直方向依次叠置；调节部件140与多个重锤中的至少部分的重锤传动配合，以通过抬升多个重锤中的至少部分的重锤调整压设在排气管104上的重锤的数量；其中，相邻两个重锤之间可拆卸地连接。
在本申请的限压结构中，限压结构包括重锤组件130和调节部件140，重锤组件130的封堵部1324用于插设在排气管104的管口内，以对排气管104形成封堵效果；重锤组件130包括多个重锤，多个重锤沿竖直方向依次叠置，以通过多个重锤起到限压作用；调节部件140与多个重锤中的至少部分的重锤传动配合，即通过调节部件140与多个重锤中的至少部分的重锤之间的配合作用，能够抬升多个重锤中的至少部分的重锤，进而通过抬升多个重锤中的至少部分的重锤来调整压设在排气管104上的重锤的数量，即通过调整压设在排气管104上的重锤的数量来实现多级别限压；将该限压结构应用在压力锅中以对压力锅进行限压，即可实现对压力锅的多级别限压，以实现压力锅的多级别压力保护和多种烹饪效果，从而解决在一些实施例中的压力锅的限压方式不能实现多级限压的问题。
另外，相邻两个重锤之间可拆卸地连接，以使相邻两个重锤之间能够锁定或解锁；当相邻两个重锤之间处于锁定状态时，则该相邻两个重锤均不能被抬升，只有当相邻两个重锤之间处于解锁状态时，该相邻两个重锤才会被抬升。
具体地，相邻两个重锤具有第一连接状态和第二连接状态；当相邻两个重锤处于第一连接状态时，相邻两个重锤沿竖直方向相对固定；当相邻两个重锤处于第二连接状态时，相邻 两个重锤具有沿竖直方向相对移动的预定移动行程，以使相邻两个重锤之间能够沿竖直方向相对移动，进而在各个重锤沿竖直方向移动过程中，使这个重锤被抬升。
为了实现相邻两个重锤之间的配合，当相邻两个重锤处于第一连接状态时，使相邻两个重锤之间螺纹连接；各个重锤均具有将其重力与排气管104脱离的抬升状态，在各个重锤处于抬升状态时，该重锤与其相邻的重锤之间的螺纹连接处于解锁状态，以使这两个相邻的重锤之间处于第二连接状态；当该重锤与其相邻的重锤之间螺纹配合，以使该重锤与其相邻的重锤之间沿竖直方向相互固定，即这两个相邻的重锤之间处于第一连接状态。
具体地，多个重锤包括位于最下层的第一重锤131，位于第一重锤131上方的各个重锤均具有相互连接的螺纹配合段1371和光面配合段1372，各个光面配合段1372位于相应的螺纹配合段1371的上方；各个重锤上均设置有与位于该重锤上方的重锤的螺纹配合段1371相配合的螺纹配合部1373，以当各个重锤处于初始状态时，该重锤的螺纹配合部1373与位于该重锤上方的重锤的螺纹配合段1371相配合；当各个重锤处于抬升状态时，该重锤的螺纹配合部1373位于该重锤上方的重锤的光面配合段1372内。
具体地，限压结构101还包括固定板110，第一重锤131设置在固定板110上；第一重锤131上设置有定位柱1312，固定板110上设置有定位孔112，定位柱1312插设在定位孔112内，以使第一重锤131与固定板110之间相对固定。
具体地，多个重锤包括位于最上层的第二重锤132，封堵部1324设置在第二重锤132上，调节部件140与位于第二重锤132下方的重锤均限位配合，以逐个抬升位于第二重锤132下方的各个重锤。
为了实现调节部件140与位于第二重锤132下方的重锤之间的限位配合，调节部件140包括旋转盘141，旋转盘141上设置有定位块142，重锤组件130具有定位槽135，以通过转动旋转盘141调整定位块142与定位槽135之间的配合关系，以抬升或释放多个重锤中的至少部分的重锤。
为了实现旋转盘141转动，调节部件140还包括转齿部143，转齿部143设置在旋转盘141上，以通过推动转齿部143带动旋转盘141转动。
为了实现推动转齿部143转动，调节部件140还包括推动组件，以通过推动组件推动转齿部143转动。
具体地，推动组件的一种实现方式为：如图16至图18所示，推动组件包括套筒部1441和锁定部1442，套筒部1441套设在旋转盘141上，锁定部1442设置在套筒部1441上，锁定部1442的至少部分可伸缩地设置在套筒部1441的腔体内，锁定部1442与转齿部143卡接，以在套筒部1441转动时通过锁定部1442推动旋转盘141转动。可选地，锁定部1442为块状结构。
具体地，推动组件还包括第一弹性件1443和安装座1445，安装座1445设置在套筒部1441上，以使安装座1445与套筒部1441相对固定；第一弹性件1443的两端分别与锁定部1442 和安装座1445固定连接，以在第一弹性件1443的弹性作用下，使锁定部1442能够相对安装座1445在套筒部1441的腔体内进行伸缩。可选地，第一弹性件1443为弹簧。
具体地，推动组件还包括第一传动板1446和第二传动板1447，第一传动板1446沿第一预定方向可移动地设置，第二传动板1447可活动地设置在第一传动板1446上，第二传动板1447用于与套筒部1441固定连接，以在第一传动板1446沿第一预定方向移动时，第一传动板1446推动第二传动板1447和套筒部1441转动，套筒部1441带动锁定部1442转动，并通过锁定部1442转动来推动旋转盘141转动。
可选地，第一传动板1446和第二传动板1447均为条形板，第二传动板1447的一端用于与第一传动板1446活动连接，第二传动板1447的另一端用于与套筒部1441连接。
具体地，第一传动板1446上设置有第一限位柱1448，第二传动板1447具有限位通道1450，第一限位柱1448穿设在限位通道1450内，第一限位柱1448的外壁面与限位通道1450的内壁面相互配合，以实现第一传动板1446沿第一预定方向移动时，第一传动板1446推动第二传动板1447和套筒部1441转动。具体使用中，第一限位柱1448的外壁面与限位通道1450的内壁面接触，且在第一传动板1446推动第二传动板1447和套筒部1441转动时，第二传动板1447相对第一限位柱1448移动，以使第一限位柱1448的外壁面与限位通道1450的内壁面滑动接触。
可选地，限位通道1450为条形孔，该条形孔的延伸方向与第二传动板1447的延伸方向相同；第二传动板1447相对第一限位柱1448沿其延伸方向移动。
具体地，第一传动板1446可伸缩地设置，以使第一传动板1446具有其初始位置和最大伸展位置，第二传动板1447具有其初始位置和最大转动位置；锁定部1442具有其相对安装座1445的初始位置和最大移动位置，当锁定部1442处于其初始位置时，第一弹性件1443为自由状态；当锁定部1442处于其最大移动位置，第一弹性件1443被压缩。
如图17所示，当第一传动板1446处于其初始位置时，第二传动板1447处于其初始位置，此时第一限位柱1448位于限位通道1450内的靠近套筒部1441的端部；此时，锁定部1442处于其初始位置，即锁定部1442的推动面与转齿部143的齿面抵接，以使该推动组件处于其初始位置。
当第一传动板1446处于其最大伸展位置时，第二传动板1447处于其最大转动位置，此时第一限位柱1448位于限位通道1450内的远离套筒部1441的端部；此时锁定部1442处于其最大移动位置，锁定部1442脱离转齿部143。
具体地，转齿部143的相邻两个齿体之间具有滑动斜面。
具体实施过程中，如图18所示，在第一传动板1446由其初始位置向其最大伸展位置移动时，由于第二传动板1447上的第一限位柱1448的外壁面与第一传动板1446的限位通道1450的内壁面接触，且第二传动板1447与套筒部1441连接，故第一传动板1446推动第二传动板1447和套筒部1441转动，套筒部1441带动安装座1445和锁定部1442转动；由于锁定部1442 的推动面与转齿部143的齿面抵接，故锁定部1442推动与其接触的齿体转动，进而推动旋转盘141转动；此过程中，第一弹性件1443逐渐被压缩，锁定部1442推动转齿部143转动一定角度，且锁定部1442与其所接触的转齿部143的齿体逐渐脱离，直至完全脱离转齿部143；第二传动板1447相对第一限位柱1448移动，以使第一限位柱1448的外壁面与限位通道1450的靠近套筒部1441的端部的内壁面接触转变为第一限位柱1448的外壁面与限位通道1450的远离套筒部1441的端部的内壁面接触。
其中，第一传动板1446由其初始位置向其最大伸展位置移动时的移动方向即为上述的第一预定方向。
在第一传动板1446由其最大伸展位置向其初始位置移动时，第一传动板1446推动第二传动板1447和套筒部1441沿与之前相反的方向转动，套筒部1441带动安装座1445和锁定部1442沿与之前相反的方向转动；且由于锁定部1442与转齿部143完全脱离，且第一弹性件1443被压缩，故在第一弹性件1443弹性作用力下和套筒部1441的作用力下，锁定部1442靠近转齿部143并抵接于转齿部143的一个滑动斜面，锁定部1442在抵接在该滑动斜面上后沿该滑动斜面滑动，直至滑动到该滑动斜面的端部，锁定部1442的推动面又再次与该滑动斜面端部的下一个齿体的齿面接触，以使锁定部1442恢复其初始位置；此过程中，第二传动板1447相对第一限位柱1448移动，以使第一限位柱1448的外壁面与限位通道1450的远离套筒部1441的端部的内壁面接触转变为第一限位柱1448的外壁面与限位通道1450的靠近套筒部1441的端部的内壁面接触，以使第二传动板1447回到其初始位置；此时，第一传动板1446也回到其初始位置。
其中，上述提到的“下一个齿体”是指沿与旋转盘141的转动方向相反的方向，与之前锁定部1442推动的齿体相邻的齿体。
推动组件还包括第一驱动部件1449，第一驱动部件1449与第一传动板1446连接，以驱动第一传动板1446进行伸缩运动。可选地，第一驱动部件1449为驱动气缸或直线电机。
具体地，推动组件的另一种实现方式为：如图13至图15所示，推动组件包括棘爪部1451，棘爪部1451与转齿部143相配合，以通过驱动转齿部143转动带动旋转盘141转动。
推动组件还包括推板1452，推板1452沿第二预定方向可移动地设置，棘爪部1451可转动地设置在推板1452上，以在推板1452沿第二预定方向移动时，棘爪部1451相对推板1452转动；并在棘爪部1451转动过程中，棘爪部1451推动旋转盘141转动。
推动组件还包括第二弹性件1453，第二弹性件1453的两端分别与棘爪部1451和推板1452固定连接；在棘爪部1451相对推板1452转动转动过程中，第二弹性件1453被压缩。可选地，第二弹性件1453为弹簧。
具体地，推板1452可伸缩地设置，以使推板1452具有其初始位置和最大伸展位置，如图14所示，当推板1452处于其初始位置时，棘爪部1451也处于其相对推板1452的初始位置，以使推动组件处于其初始位置；此时，第二弹性件1453为自由状态，棘爪部1451的推 动面与转齿部143的齿面抵接；当推板1452处于其最大伸展位置时，棘爪部1451也处于其相对推板1452的最大移动位置，此时，第二弹性件1453处于被压缩状态，棘爪部1451脱离转齿部143。
具体地，转齿部143的相邻两个齿体之间具有滑动斜面。
具体实施过程中，如图15所示，在推板1452由其初始位置向其最大伸展位置移动时，由于棘爪部1451抵接于转齿部143，故棘爪部1451自其初始位置向其最大移动位置转动，此过程中，第二弹性件1453逐渐被压缩，棘爪部1451推动转齿部143转动一定角度，且棘爪部1451与其所接触的转齿部143的齿体逐渐脱离，直至完全脱离转齿部143。
其中，推板1452由其初始位置向其最大伸展位置移动时的移动方向即为上述的第二预定方向。
在推板1452由其最大伸展位置向其初始位置移动时，由于在棘爪部1451与转齿部143完全脱离，且第二弹性件1453被压缩，故在第二弹性件1453的弹性作用力下和推板1452的作用力下，棘爪部1451靠近转齿部143并抵接于转齿部143的一个滑动斜面，棘爪部1451在抵接在该滑动斜面上后沿该滑动斜面滑动，直至滑动到该滑动斜面的端部，棘爪部1451的推动面又再次与该滑动斜面端部的下一个齿体的齿面接触，以使棘爪部1451恢复其初始位置，此时，推板1452也回到其初始位置。
其中，上述提到的“下一个齿体”是指沿与旋转盘141的转动方向相反的方向，与之前棘爪部1451推动的齿体相邻的齿体。
具体地，推板1452上设置有第二限位柱1454，棘爪部1451可转动地套设在该第二限位柱1454上。
棘爪部1451包括相互连接的第一板体和第二板体，第一板体和第二板体之间呈预定角度设置，该预定角度大于90度且小于180度；第一板体的自由端面形成棘爪部1451的推动面，第二板体的远离第一板体的一端套设在第二限位柱1454上，第二弹性件1453连接在第一板体和第二板体的连接处。
推动组件还包括第二驱动部件1455，第二驱动部件1455与推板1452连接，以驱动推板1452进行伸缩运动。可选地，第二驱动部件1455为驱动气缸或直线电机。
现在，将参照附图更详细地描述根据本申请的示例性实施方式。然而，这些示例性实施方式可以由多种不同的形式来实施，并且不应当被解释为只限于这里所阐述的实施方式。应当理解的是，提供这些实施方式是为了使得本申请的公开彻底且完整，并且将这些示例性实施方式的构思充分传达给本领域普通技术人员，在附图中，为了清楚起见，扩大了层和区域的厚度，并且使用相同的附图标记表示相同的器件，因而将省略对它们的描述。
实施例一
本实施例中所提供的限压结构为如图1至图5所示的限压结构101，本实施例中的限压结构101的重锤组件由第一重锤131和第二重锤132组成，构成二级限压。
在本实施例中，第一重锤131的至少部分位于第二重锤132的下方。第二重锤132具有相互连接的螺纹配合段1371和光面配合段1372，第二重锤132的光面配合段1372位于其螺纹配合段1371的上方；第一重锤131上设置有与第二重锤132的螺纹配合段1371相配合的螺纹配合部1373，以在第一重锤131和第二重锤132均处于初始状态时，第一重锤131的螺纹配合部1373与第二重锤132的螺纹配合段1371相配合，以使第一重锤131和第二重锤132之间螺纹连接；当第一重锤131处于其抬升状态时，第一重锤131的螺纹配合部1373位于第二重锤132的光面配合段1372内。
在本实施例中，螺纹配合段1371为螺纹孔段，光面配合段1372为光孔段，第二重锤132的螺纹孔段与光孔段相互连通；螺纹配合部1373为外螺纹部。
可选地，为了保证第一重锤131和第二重锤132之间处于组合状态，螺纹配合段1371的孔径小于光面配合段1372的孔径；螺纹配合部1373为设置在相应的重锤上的凸缘部。
具体地，固定板110上还设置有用于对排气管104让位的避让孔113，第一重锤131上设置有用于对排气管104让位的第一让位孔1314，第二重锤132上设置有用于对排气管104让位的第二让位孔1325，以使排气管104依次穿设在避让孔113、第一让位孔1314和第二让位孔1325内。可选地，第二让位孔1325和第一让位孔1314之间、第一让位孔1314和避让孔113之间均连通。
具体地，第二让位孔1325的内壁设置有内螺纹，排气管104的外壁上设置有外螺纹，以使排气管104与第二重锤132之间螺纹连接，进而使排气管104与第二重锤132之间相对固定。
在本实施例中，第一重锤131与调节部件140限位配合，以通过第一重锤131与调节部件140之间的配合来抬升第一重锤131。
具体地，封堵部1324位于第二让位孔1325内。
在本实施例中，旋转盘141可转动地套设在第一重锤131的外侧，以使旋转盘141相对第一重锤131转动；第二重锤132与调节部件140间隔设置。
具体地，定位块142为一个，定位槽135为多个，多个定位槽135中的至少两个定位槽135具有沿竖直方向的深度差，以通过使定位块142插设在相应的定位槽135内抬升多个重锤中的至少部分的重锤的高度。即在定位块142随旋转盘141转动的过程中，定位块142从深度较深的定位槽135内移动至深度较浅的定位槽135内，以抬升多个重锤中的至少部分的重锤的高度；定位块142再从深度较浅的定位槽135内移动至深度较深的定位槽135内，以释放多个重锤中的至少部分的重锤。
或者，定位块142和定位槽135均为多个，多个定位块142和多个定位槽135均沿旋转盘141的周向布置；多个定位块142中的至少两个定位块142具有竖直方向的高度差，多个定位槽135中的至少两个定位槽具有沿竖直方向的深度差，以通过使各个定位块142插设在相应的定位槽135内抬升多个重锤中的至少部分的重锤的高度。具体实施过程中，在定位块142随旋转盘141转动的过程中，多个定位块142中的高度较高的定位块142从相应的深度较深的定位槽135内移动至相应的深度较浅的定位槽135内，以抬升多个重锤中的至少部分的重锤的高度；多个定位块142中的高度较高的定位块142再从相应的深度较浅的定位槽135内移动至相应的深度较深的定位槽135内，以释放多个重锤中的至少部分的重锤。
具体地，定位槽135为条形槽，沿旋转盘141的转动方向，定位槽135的顶壁沿竖直方向逐渐延伸；定位块142插设在定位槽135内，以在旋转盘141转动时，通过定位块142的顶壁与定位槽135的顶壁之间的配合抬升或释放多个重锤中的至少部分的重锤。即通过定位块142的顶壁与相应的定位槽135的顶壁接触，来实现对多个重锤中的至少部分的重锤的抬升或释放。
在本实施例中，旋转盘141的盘面上设置有第一定位块1421，第一重锤131上设置有第一定位槽1351，旋转盘141具有初始位置和第一工作位置。
具体实施过程中，当旋转盘141位于初始位置时，第一重锤131与第二重锤132之间处于相互锁定状态，第一定位块1421位于第一定位槽1351内，以使第一重锤131和第二重锤132同时处于将其重力作用于排气管104的初始状态；当旋转盘141处于第一工作位置时，第一重锤131和第二重锤132之间处于相互解锁状态，第一定位块1421由第一定位槽1351移出时以抬升第一重锤131，以使第一重锤131处于将其重力与排气管104脱离的抬升状态。
具体地，当旋转盘141位于初始位置时，第一重锤131与第二重锤132之间螺纹连接；当旋转盘141位于第一工作位置时，第一重锤131与第二重锤132之间的螺纹连接处于解锁状态。
在本实施例中，第一重锤131上设置有第二定位槽1352，第二定位槽1352的深度小于第一定位槽1351的深度；当旋转盘141处于第一工作位置时，第一定位块1421卡设在第二定位槽1352内。
在本实施例中，旋转盘141的盘面上设置有第二定位块1422，第二定位块1422与第二定位槽1352相配合；当旋转盘141处于初始位置时，第二定位块1422卡设在第二定位槽1352内。
在第一重锤131上设置第一定位槽组，第一定位槽组包括成对的第一定位槽1351和第二定位槽1352，成对的第一定位槽1351和第二定位槽1352沿第一重锤131的周向间隔设置；在旋转盘141上设置第一定位块组，第一定位块组包括成对的第一定位块1421和第二定位块1422，成对的第一定位块1421和第二定位块1422沿旋转盘141的周向间隔设置。
可选地，在第一重锤131上设置多个第一定位槽组，多个第一定位槽组沿第一重锤131的周向间隔布置；在旋转盘141上设置一组第一定位块组。第一定位块1421位于多个第一定位槽组中的其中一个第一定位槽组的第一定位槽1351内，第二定位块1422位于该第一定位槽组的第二定位槽1352内，以使第一重锤131处于将其重力作用于排气管104的初始状态。
当需要抬升第一重锤131时，首先通过旋拧第一重锤131或第二重锤132，使第一重锤131和第二重锤132之间的螺纹连接处于解锁状态，即使第一重锤131进入第二重锤132的光面配合段1372，第一重锤131在进入第二重锤132的光面配合段1372后，第一重锤131在其自身重力的作用下，第一重锤131的螺纹配合部1373的下层凸缘会卡在第二重锤132的螺纹配合段1371的上层凸缘上，以使第一重锤131挂设在第二重锤132上，故第一重锤131的重力继续通过第二重锤132压设在排气管104上。
再转动旋转盘141使其相对第一重锤131转动，在旋转盘141相对第一重锤131转动过程中，第一定位块1421和第二定位块1422均随旋转盘141转动，当第一定位块1421移动至该第一定位槽组的第二定位槽1352内，第一定位块1421插设在该第二定位槽1352内以顶起第一重锤131，以使第一重锤131处于其抬升状态；第二定位块1422移动至与该第一定位槽组相邻的第一定位槽组的第一定位槽1351处并使其至少部分插设在这个第一定位槽1351内。
继续转动旋转盘141，使第一定位块1421移动至与该第一定位槽组相邻的第一定位槽组的第一定位槽1351内并使其插设在这个第一定位槽1351内，以使第一重锤131恢复其初始状态，此时，第二定位块1422移动至与该第一定位槽组相邻的第一定位槽组的第二定位槽1352内并插设在这个第二定位槽1352内。
可选地，在第一重锤131上设置多个第一定位槽组，多个第一定位槽组沿第一重锤131的周向间隔布置；在旋转盘141上设置多个第一定位块组，多个第一定位块组与多个第一定位槽组一一对应地设置，各个第一定位块组中的第一定位块1421和第二定位块1422一一对应地插设在相应的第一定位槽组的第一定位槽1351和第二定位槽1352内，以使第一重锤131处于其初始状态，此时，旋转盘141处于其初始位置。
当需要抬升第一重锤131时，首先通过旋拧第一重锤131或第二定位槽1352，使第一重锤131和第二重锤132之间的螺纹连接处于解锁状态，即使第一重锤131进入第二重锤132的光面配合段1372；再转动旋转盘141使其相对第一重锤131转动，在旋转盘141相对第一重锤131转动过程中，当各个第一定位块1421移动至其相应的第一定位槽组的第二定位槽1352内并顶起第一重锤131时，第一重锤131处于其抬升状态；此时，各个第二定位块1422移动至与其相应的第一定位槽组相邻的第一定位槽组的第一定位槽1351内，以使旋转盘141处于其第一工作位置。
继续转动旋转盘141，使各个第一定位块1421移动至与其相应的第一定位槽组相邻的第一定位槽组的第一定位槽1351内，以使第一重锤131恢复其初始状态，此时，各个第二定位块1422移动至与其相应的第一定位槽组相邻的第一定位槽组的第二定位槽1352内。
在本实施例中，第一定位块1421和第二定位块1422均为椎形结构，沿远离旋转盘141的方向，第一定位块1421和第二定位块1422的横截面积均逐渐减小，以便于第一定位块1421和第二定位块1422分别从第一定位槽1351和第二定位槽1352内移出；其中，第一定位块1421和第二定位块1422的横截面积均是指其垂直于旋转盘141的中心向的截面的面积。
使用本实施例中的限压结构101，能够实现二级限压。
本实施例还提供了一种压力锅，该压力锅包括排气管104和上述的限压结构101，限压结构102设在排气管104上。
实施例二
本实施例所提供的限压结构102，其重锤组件由第一重锤131、第二重锤132和第三重锤133构成，构成三级限压，实施例二中的限压结构102与实施例一中的限压结构101的区别如下：
请结合参考图6至图12，第三重锤133设置在第一重锤131和第二重锤132之间；旋转盘141的盘面上设置有第三定位块1423，第三定位块1423设置在第一定位块1421的外侧，第三重锤133上设置有第三定位槽1353，第三定位槽1353沿第三重锤133的周向延伸。
具体实施过程中，旋转盘141还包括第二工作位置，初始位置、第一工作位置和第二工作位置沿旋转盘141的转动方向依次设置；其中，当旋转盘141位于初始位置和第一工作位置时，第三重锤133与第二重锤132之间处于相互锁定状态，第三定位块142位于第三定位槽1353内，以使第三重锤133处于将其重力作用于排气管104的初始状态；当旋转盘141运动至第二工作位置时，第三重锤133与第二重锤132之间处于相互解锁状态，第三定位块142由第三定位槽1353移出以抬升第三重锤133。
具体地，第一重锤131上还设置有第四定位槽1354，第四定位槽1354的深度小于第一定位槽1351的深度；当旋转盘141处于第二工作位置时，第一定位块1421卡设在第四定位槽1354内。
具体地，旋转盘141上设置有第四定位块1424，第四定位块1424与第四定位槽1354相配合；当旋转盘141处于初始位置时，第四定位块1424位于第四定位槽1354内。可选地，第四定位块1424的高度与第二定位块1422的高度相同。
具体实施过程中，当旋转盘141位于初始位置时，第二重锤132与第三重锤133螺纹连接，以使第三重锤133和第二重锤132相对固定，进而使第三重锤133通过第二重锤132将其重力压设在排气管104上；第一重锤131与第三重锤133螺纹连接，以使第一重锤131和第三重锤133相对固定，进而使第一重锤131通过第三重锤133和第二重锤132将其重力压设在排气管104上。
当旋转盘141处于第一工作位置时，第一重锤131与第三重锤133之间的螺纹连接处于解锁状态，第二重锤132与第三重锤133螺纹连接；当旋转盘141处于第二工作位置时，第 一重锤131与第三重锤133之间的螺纹连接处于解锁状态，第二重锤132与第三重锤133之间的螺纹连接处于解锁状态。
在本实施例中，第二重锤132套设在第三重锤133上，第三重锤133套设在第一重锤131上；第二重锤132具有相互连接的螺纹配合段1371和光面配合段1372，第二重锤132的光面配合段1372位于其螺纹配合段1371的上方，第三重锤133上设置有用于与第二重锤132的螺纹配合段1371配合的螺纹配合部1373；第三重锤133上还具有相互连接的螺纹配合段1371和光面配合段1372，第三重锤133的光面配合段1372位于其螺纹配合段1371的上方，第一重锤131上设置有用于与第三重锤133的螺纹配合段1371配合的螺纹配合部1373。
在本实施例中，第二重锤132的螺纹配合段1371为螺纹孔段，第二重锤132的光面配合段1372为光孔段，第二重锤132的螺纹孔段与光孔段相互连通，第三重锤133的螺纹配合部1373为外螺纹部；第三重锤133的螺纹配合段1371为螺纹杆段，第三重锤133的光面配合段1372为光杆段，第一重锤131的螺纹配合部1373为内螺纹部。
可选地，为了保证第三重锤133和第二重锤132之间处于组合状态，第二重锤132的螺纹配合段1371的孔径小于其光面配合段1372的孔径，第三重锤133的螺纹配合部1373为设置在第三重锤133上的凸缘部。
可选地，为了保证第一重锤131和第三重锤133之间处于组合状态，第三重锤133的螺纹配合段1371为设置在第三重锤133上的凸缘部。
具体地，第三重锤133具有第三限位杆1331，第三重锤133的螺纹配合段1371和光面配合段1372均位于第三限位杆1331上。第一重锤131的螺纹配合部1373位于第一让位孔1314内，以当第一重锤131的螺纹配合部1373与第三重锤133的螺纹配合段1371配合时，第三限位杆1331的至少部分插设在第一让位孔1314内。
具体地，第三重锤133具有第三让位孔1332，第三让位孔1332位于第三限位杆1331上，以使排气管104依次穿设在避让孔113、第一让位孔1314、第三让位孔1332和第二让位孔1325内。可选地，第二让位孔1325和第三让位孔1332之间、第三让位孔1332和第一让位孔1314之间、第一让位孔1314和避让孔113之间均连通。
在第一重锤131上设置第二定位槽组，第二定位槽组包括沿第一重锤131的周向依次间隔设置的第一定位槽1351、第二定位槽1352、第四定位槽1354；在旋转盘141上设置第二定位块组，第二定位块组包括沿旋转盘141的周向依次间隔设置的第一定位块1421、第二定位块1422和第四定位块1424。
可选地，在第一重锤131上设置多个第二定位槽组，多个第二定位槽组沿第一重锤131的周向间隔布置；在旋转盘141上设置一组第二定位块组和一个第三定位块1423；在第三重锤133上设置多个第三定位槽1353，多个第三定位槽1353沿第三重锤133的周向间隔布置。
当旋转盘141处于其初始位置时，第一定位块1421位于多个第二定位槽组中的其中一个第二定位槽组的第一定位槽1351内，第二定位块1422位于该第二定位槽组的第二定位槽1352 内，第四定位块1424位于该第二定位槽组的第四定位槽1354内，以使第一重锤131处于其初始状态；第三定位块1423位于多个第三定位槽1353中的其中一个第三定位槽1353内，以使第一重锤131，以使第三重锤133处于将其重力作用于排气管104的初始状态。
当需要抬升第一重锤131时，首先通过旋拧第一重锤131或第三重锤133，使第一重锤131和第三重锤133之间的螺纹连接处于解锁状态，即使第一重锤131处于第三重锤133的光面配合段1372，第一重锤131处于第二重锤132的光面配合段1372后，第一重锤131在其自身重力的作用下，第一重锤131的螺纹配合部1373的下层凸缘会卡在第三重锤133的螺纹配合段1371的上层凸缘上，以使第一重锤131挂设在第三重锤133上，故第一重锤131的重力继续通过第三重锤133和第二重锤132压设在排气管104上。
再转动旋转盘141使其相对第一重锤131转动，在旋转盘141相对第一重锤131转动过程中，第一定位块1421、第二定位块1422、第三定位块1423和第四定位块1424均随旋转盘141转动；当旋转盘141相对第一重锤131转动并转动至其第一工作位置时，第一定位块1421移动至该第二定位槽组的第二定位槽1352内，第一定位块1421插设在该第二定位槽1352内以顶起第一重锤131，使第一重锤131处于其抬升状态；第二定位块1422移动至该第二定位槽组的第四定位槽1354处并使其至少部分插设在该第四定位槽1354内，第四定位块1424移动至与该第二定位槽组相邻的第二定位槽组的第一定位槽1351处并使其至少部分插设在这个第一定位槽1351内；此转动过程中，第三定位块1423在其所处的第三定位槽1353内移动，并维持在该第三定位槽1353内，以使第三重锤133维持其初始状态。
当需要抬升第三重锤133时，首先通过旋拧第三重锤133或第二重锤132，使第三重锤133和第二重锤132之间的螺纹连接处于解锁状态，即使第三重锤133进入第二重锤132的光面配合段1372，第三重锤133在进入第二重锤132的光面配合段1372后，第三重锤133在其自身重力的作用下，第三重锤133的螺纹配合部1373的下层凸缘会卡在第二重锤132的螺纹配合段1371的上层凸缘上，以使第三重锤133挂设在第二重锤132上，故第三重锤133的重力继续通过第二重锤132压设在排气管104上。
再继续转动旋转盘141使其相对第三重锤133和第一重锤131转动，并使旋转盘141由其第一工作位置转动至其第二工作位置时，第一定位块1421移动至该第二定位槽组的第四定位槽1354内，第一定位块1421插设在该第四定位槽1354内以维持其对第一重锤131的抬升状态，第二定位块1422移动至与该第二定位槽组相邻的第二定位槽组的第一定位槽1351处并使其至少部分插设在这个第一定位槽1351内，第四定位块1424移动至与该第二定位槽组相邻的第二定位槽组的第二定位槽1352处并使其至少部分插设在这个第二定位槽1352内；此转动过程中，第三定位块1423的至少部分从其所处的第三定位槽1353内移出以使第三定位块1423位于该第三定位槽1353的外侧，并与第三重锤133的底壁接触，以抬升第三重锤133，使第三重锤133处于其抬升状态。
继续转动旋转盘141，使第一定位块1421移动至与该第二定位槽组相邻的第二定位槽组的第一定位槽1351内并使其插设在这个第一定位槽1351内，以使第一重锤131恢复其初始状态，此时，第二定位块1422移动至与该第二定位槽组相邻的第二定位槽组的第二定位槽1352 内并插设在这个第二定位槽1352内，第四定位块1424移动至与该第二定位槽组相邻的第二定位槽组的第四定位槽1354内并插设在这个第四定位槽1354内；第三定位块1423移动至与该第三定位槽1353相邻的第三定位槽1353内并插设在这个相邻的第三定位槽1353内，以使第三重锤133恢复其初始状态。
可选地，在第一重锤131上设置多个第二定位槽组，多个第二定位槽组沿第一重锤131的周向间隔布置；在旋转盘141上设置多个第二定位块组和多个第三定位块1423，多个第三定位块1423一一对应地设置在多个第二定位块组的第一定位块1421的外侧；多个第二定位块组与多个第二定位槽组一一对应地设置，各个第二定位块组中的第一定位块1421、第二定位块1422、第四定位块1424一一对应地插设在相应的第二定位槽组的第一定位槽1351、第二定位槽1352、第四定位槽1354内；在第三重锤133上设置多个第三定位槽1353，多个第三定位槽1353沿第三重锤133的周向间隔布置，多个第三定位块1423一一对应地插设在多个第三定位槽1353内。
当旋转盘141处于其初始位置时，如图6所示，图6示出了限压结构102的旋转盘141处于其初始位置的状态示意图；各个第一定位块1421位于相应的第二定位槽组的第一定位槽1351内，各个第二定位块1422位于该相应的第二定位槽组的第二定位槽1352内，各个第四定位块1424位于该相应的第二定位槽组的第四定位槽1354内，以使第一重锤131处于其初始状态；各个第三定位块1423位于相应的第三定位槽1353内，以使第三重锤133处于其初始状态。
当需要抬升第一重锤131时，首先通过旋拧第一重锤131或第三重锤133，使第一重锤131和第三重锤133之间的螺纹连接处于解锁状态，即使第一重锤131处于第三重锤133的光面配合段1372；再转动旋转盘141使其相对第一重锤131转动，在旋转盘141相对第一重锤131转动过程中，当旋转盘141转动至其第一工作位置时，如图11所示，各个第一定位块1421移动至其相应的第二定位槽组的第二定位槽1352内，以顶起第一重锤131，使第一重锤131处于抬升状态；各个第二定位块1422移动至其相应的第二定位槽组的第四定位槽1354内，各个第四定位块1424移动至与其相应的第二定位槽组相邻的第二定位槽组的第一定位槽1351内，此转动过程中，各个第三定位块1423在相应的第三定位槽1353内移动，并维持在相应的第三定位槽1353内，以使第三重锤133维持其初始状态。
当需要抬升第三重锤133时，首先通过旋拧第三重锤133或第二重锤132，使第三重锤133和第二重锤132之间的螺纹连接处于解锁状态，即使第三重锤133进入第二重锤132的光面配合段1372；再继续转动旋转盘141使其相对第三重锤133和第一重锤131转动，并使旋转盘141由其第一工作位置转动至其第二工作位置时，如图12所示，各个第一定位块1421移动至其相应的第二定位槽组的第四定位槽1354内，以维持第一重锤131的抬升状态，各个第二定位块1422移动至与其相应的第二定位槽组相邻的第二定位槽组的第一定位槽1351内，各个第四定位块1424移动至与其相应的第二定位槽组相邻的第二定位槽组的第二定位槽1352内，此转动过程中，各个第三定位块1423的至少部分从相应的第三定位槽1353内移出，以 使各个第三定位块1423位于相应的第三定位槽1353的外侧，并与第三重锤133的底壁接触，以抬升第三重锤133，使第三重锤133处于其抬升状态。
继续转动旋转盘141，使各个第一定位块1421移动至与其相应的第二定位槽组相邻的第二定位槽组的第一定位槽1351内，以使第一重锤131恢复其初始状态，此时，第二定位块1422移动至与其相应的第二定位槽组相邻的第二定位槽组的第二定位槽1352内，第四定位块1424移动至与其相应的第二定位槽组相邻的第二定位槽组的第四定位槽1354内；各个第三定位块1423移动至与其相应的第三定位槽1353相邻的第三定位槽1353内，以使第三重锤133恢复其第二初始状态。
在本实施例中，第一定位块1421、第二定位块1422、第三定位块1423和第四定位块1424均为椎形结构，沿远离旋转盘141的方向，第一定位块1421、第二定位块1422、第三定位块1423和第四定位块1424的横截面积均逐渐减小，以便于第一定位块1421、第二定位块1422、第三定位块1423和第四定位块1424分别从第一定位槽1351、第二定位槽1352、第三定位槽1353和第四定位槽1354内移出；其中，第一定位块1421、第二定位块1422、第三定位块1423和第四定位块1424的横截面积均是指其垂直于旋转盘141的中心向的截面的面积。
使用本实施例中的限压结构102，能够实现三级限压。
以此类推，即可通过在第一重锤131和第二重锤132之间增加相应的重锤数量，并在旋转盘141上增加相应的定位块、在第一重锤131和所增加的重锤上增加相应的定位槽来进行配合，以实现更多级别的限压。
本实施例还提供了一种压力锅，该压力锅包括排气管104和上述的限压结构102，限压结构102设在排气管104上。
从以上的描述中，可以看出，本申请上述的实施例实现了如下技术效果：
在本申请的限压结构中，限压结构包括重锤组件130和调节部件140，重锤组件130的封堵部1324用于插设在排气管104的管口内，以对排气管104形成封堵效果；重锤组件130包括多个重锤，多个重锤沿竖直方向依次叠置，以通过多个重锤起到限压作用；调节部件140与多个重锤中的至少部分的重锤传动配合，即通过调节部件140与多个重锤中的至少部分的重锤之间的配合作用，能够抬升多个重锤中的至少部分的重锤，进而通过抬升多个重锤中的至少部分的重锤来调整压设在排气管104上的重锤的数量，即通过调整压设在排气管104上的重锤的数量来实现多级别限压；将该限压结构应用在压力锅中以对压力锅进行限压，即可实现对压力锅的多级别限压，以实现压力锅的多级别压力保护和多种烹饪效果，从而解决在一些实施例中的压力锅的限压方式不能实现多级限压的问题。
另外，相邻两个重锤之间可拆卸地连接，以使相邻两个重锤之间能够锁定或解锁；当相邻两个重锤之间处于锁定状态时，则该相邻两个重锤均不能被抬升，只有当相邻两个重锤之间处于解锁状态时，该相邻两个重锤才会被抬升。
为了便于描述，在这里可以使用空间相对术语，如“在……之上”、“在……上方”、“在……上表面”、“上面的”等，用来描述如在图中所示的一个器件或特征与其他器件或特征的空间位置关系。应当理解的是，空间相对术语旨在包含除了器件在图中所描述的方位之外的在使用或操作中的不同方位。例如，如果附图中的器件被倒置，则描述为“在其他器件或构造上方”或“在其他器件或构造之上”的器件之后将被定位为“在其他器件或构造下方”或“在其他器件或构造之下”。因而，示例性术语“在……上方”可以包括“在……上方”和“在……下方”两种方位。该器件也可以其他不同方式定位(旋转90度或处于其他方位)，并且对这里所使用的空间相对描述作出相应解释。
需要注意的是，这里所使用的术语仅是为了描述具体实施方式，而非意图限制根据本申请的示例性实施方式。如在这里所使用的，除非上下文另外明确指出，否则单数形式也意图包括复数形式，此外，还应当理解的是，当在本说明书中使用术语“包含”和/或“包括”时，其指明存在特征、步骤、操作、器件、组件和/或它们的组合。
需要说明的是，本申请的说明书和权利要求书及上述附图中的术语“第一”、“第二”等是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。应该理解这样使用的数据在适当情况下可以互换，以便这里描述的本申请的实施方式例如能够以除了在这里图示或描述的那些以外的顺序实施。此外，术语“包括”和“具有”以及他们的任何变形，意图在于覆盖不排他的包含，例如，包含了一系列步骤或单元的过程、方法、系统、产品或设备不必限于清楚地列出的那些步骤或单元，而是可包括没有清楚地列出的或对于这些过程、方法、产品或设备固有的其它步骤或单元。
以上所述仅为本申请的优选实施例而已，并不用于限制本申请，对于本领域的技术人员来说，本申请可以有各种更改和变化。凡在本申请的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本申请的保护范围之内。

Claims (19)

  1. 一种限压结构，其特征在于，包括：
    重锤组件(130)，所述重锤组件(130)具有用于插设在排气管(104)的管口内的封堵部(1324)；所述重锤组件(130)包括多个重锤，所述多个重锤沿竖直方向依次叠置；
    调节部件(140)，所述调节部件(140)与所述多个重锤中的至少部分的重锤传动配合，以通过抬升所述多个重锤中的至少部分的重锤调整压设在所述排气管(104)上的重锤的数量；
    其中，相邻两个所述重锤之间可拆卸地连接。
  2. 根据权利要求1所述的限压结构，其特征在于，相邻两个所述重锤之间螺纹连接；各个所述重锤均具有将其重力与所述排气管(104)脱离的抬升状态，在各个所述重锤处于所述抬升状态时，该重锤与其相邻的所述重锤之间的螺纹连接处于解锁状态。
  3. 根据权利要求2所述的限压结构，其特征在于，
    所述多个重锤包括位于最下层的第一重锤(131)，位于所述第一重锤(131)上方的各个重锤均具有相互连接的螺纹配合段(1371)和光面配合段(1372)，各个所述光面配合段(1372)位于相应的所述螺纹配合段(1371)的上方；
    各个所述重锤上均设置有与位于该重锤上方的所述重锤的螺纹配合段(1371)相配合的螺纹配合部(1373)；当各个所述重锤处于初始状态时，该重锤的螺纹配合部(1373)与该重锤上方的所述重锤的螺纹配合段(1371)相配合；当各个所述重锤处于所述抬升状态时，该重锤的螺纹配合部(1373)位于该重锤上方的所述重锤的光面配合段(1372)内。
  4. 根据权利要求1所述的限压结构，其特征在于，所述多个重锤包括位于最上层的第二重锤(132)，所述封堵部(1324)设置在所述第二重锤(132)上；所述调节部件(140)与位于所述第二重锤(132)下方的所述重锤均限位配合，以逐个抬升位于所述第二重锤(132)下方的各个所述重锤。
  5. 根据权利要求1所述的限压结构，其特征在于，所述调节部件(140)包括：
    旋转盘(141)，所述旋转盘(141)上设置有定位块(142)，所述重锤组件(130)具有定位槽(135)，以通过转动所述旋转盘(141)调整所述定位块(142)与所述定位槽(135)之间的配合关系，以抬升或释放所述多个重锤中的至少部分的重锤。
  6. 根据权利要求5所述的限压结构，其特征在于，
    所述定位块(142)为一个，所述定位槽(135)为多个，多个所述定位槽(135)中的至少两个定位槽(135)具有沿竖直方向的深度差，以通过使所述定位块(142)插设在相应的所述定位槽(135)内抬升所述多个重锤中的至少部分的重锤的高度；或者
    所述定位块(142)和所述定位槽(135)均为多个，多个所述定位块(142)和多个所述定位槽(135)均沿所述旋转盘(141)的周向布置；多个所述定位块(142)中的至少两个定位块(142)具有竖直方向的高度差，多个所述定位槽(135)中的至少两个定位槽具有沿竖直方向的深度差，以通过使各个所述定位块(142)插设在相应的所述定位槽(135)内抬升所述多个重锤中的至少部分的重锤的高度。
  7. 根据权利要求6所述的限压结构，其特征在于，所述定位槽(135)为条形槽，沿所述旋转盘(141)的转动方向，所述定位槽(135)的顶壁沿竖直方向逐渐延伸；所述定位块(142)插设在所述定位槽(135)内，以在所述旋转盘(141)转动时，通过所述定位块(142)的顶壁与所述定位槽(135)的顶壁之间的配合抬升或释放所述多个重锤中的至少部分的重锤。
  8. 根据权利要求5所述的限压结构，其特征在于，所述调节部件(140)还包括：
    转齿部(143)，所述转齿部(143)设置在所述旋转盘(141)上，以通过推动所述转齿部(143)带动所述旋转盘(141)转动。
  9. 根据权利要求8所述的限压结构，其特征在于，所述调节部件(140)还包括：
    套筒部(1441)和锁定部(1442)，所述套筒部(1441)套设在所述旋转盘(141)上，所述锁定部(1442)设置在所述套筒部(1441)上，所述锁定部(1442)的至少部分可伸缩地设置在所述套筒部(1441)的腔体内，所述锁定部(1442)与所述转齿部(143)卡接，以在所述套筒部(1441)转动时通过所述锁定部(1442)推动所述旋转盘(141)转动；或者
    棘爪部(1451)，所述棘爪部(1451)与所述转齿部(143)相配合，以通过驱动所述转齿部(143)转动带动所述旋转盘(141)转动。
  10. 根据权利要求1所述的限压结构，其特征在于，所述多个重锤包括：
    第二重锤(132)，所述封堵部(1324)设置在所述第二重锤(132)上；
    第一重锤(131)，所述第一重锤(131)的至少部分位于所述第二重锤(132)的下方；
    旋转盘(141)，所述旋转盘(141)的盘面上设置有第一定位块(1421)，所述第一重锤(131)上设置有第一定位槽(1351)，所述旋转盘(141)具有初始位置和第一工作位置；
    其中，当所述旋转盘(141)位于所述初始位置时，所述第一重锤(131)与所述第二重锤(132)之间处于相互锁定状态，所述第一定位块(1421)位于所述第一定位槽(1351)内，以使所述第一重锤(131)和所述第二重锤(132)同时处于将其重力作用于所述排气管(104)的初始状态；
    当所述旋转盘(141)处于所述第一工作位置时，所述第一重锤(131)和所述第二 重锤(132)之间处于相互解锁状态，所述第一定位块(1421)由所述第一定位槽(1351)移出时以抬升所述第一重锤(131)，以使所述第一重锤(131)处于将其重力与所述排气管(104)脱离的抬升状态。
  11. 根据权利要求10所述的限压结构，其特征在于，当所述旋转盘(141)位于所述初始位置时，所述第一重锤(131)与所述第二重锤(132)之间螺纹连接；当所述旋转盘(141)位于所述第一工作位置时，所述第一重锤(131)与所述第二重锤(132)之间的螺纹连接处于解锁状态。
  12. 根据权利要求10所述的限压结构，其特征在于，所述第一重锤(131)上设置有第二定位槽(1352)，所述第二定位槽(1352)的深度小于所述第一定位槽(1351)的深度；当所述旋转盘(141)处于所述第一工作位置时，所述第一定位块(1421)卡设在所述第二定位槽(1352)内。
  13. 根据权利要求12所述的限压结构，所述旋转盘(141)的盘面上设置有第二定位块(1422)，所述第二定位块(1422)与所述第二定位槽(1352)相配合；当所述旋转盘(141)处于所述初始位置时，所述第二定位块(1422)卡设在所述第二定位槽(1352)内。
  14. 根据权利要求10所述的限压结构，其特征在于，所述多个重锤还包括：
    第三重锤(133)，所述第三重锤(133)设置在第一重锤(131)和所述第二重锤(132)之间；
    所述旋转盘(141)的盘面上设置有第三定位块(1423)，所述第三定位块(142)设置在所述第一定位块(1421)的外侧，所述第三重锤(133)上设置有第三定位槽(1353)，所述第三定位槽(1353)沿所述第三重锤(133)的周向延伸；所述旋转盘(141)还包括第二工作位置，所述初始位置、所述第一工作位置和所述第二工作位置沿所述旋转盘(141)的转动方向依次设置；
    其中，当所述旋转盘(141)位于所述初始位置和所述第一工作位置时，所述第三重锤(133)与所述第二重锤(132)之间处于相互锁定状态，所述第三定位块(142)位于所述第三定位槽(1353)内，以使所述第三重锤(133)处于将其重力作用于所述排气管(104)的初始状态；当所述旋转盘(141)运动至所述第二工作位置时，所述第三重锤(133)与所述第二重锤(132)之间处于相互解锁状态，所述第三定位块(142)由所述第三定位槽(1353)移出以抬升所述第三重锤(133)。
  15. 根据权利要求14所述的限压结构，其特征在于，所述第一重锤(131)上设置有第四定位槽(1354)，所述第四定位槽(1354)的深度小于所述第一定位槽(1351)的深度；当所述旋转盘(141)处于所述第二工作位置时，所述第一定位块(1421)卡设在所述第四定位槽(1354)内。
  16. 根据权利要求15所述的限压结构，其特征在于，所述旋转盘(141)上设置有第四定位块(1424)，所述第四定位块(1424)与所述第四定位槽(1354)相配合；当所述旋转盘(141) 处于所述初始位置时，所述第四定位块(1424)位于所述第四定位槽(1354)内。
  17. 根据权利要求14所述的限压结构，其特征在于，当所述旋转盘(141)位于所述初始位置时，所述第一重锤(131)与所述第三重锤(133)螺纹连接，所述第二重锤(132)与所述第三重锤(133)螺纹连接；当所述旋转盘(141)处于所述第一工作位置时，所述第一重锤(131)与所述第三重锤(133)之间的螺纹连接处于解锁状态，所述第二重锤(132)与所述第三重锤(133)螺纹连接；当所述旋转盘(141)处于所述第二工作位置时，所述第一重锤(131)与所述第三重锤(133)之间的螺纹连接处于解锁状态，所述第二重锤(132)与所述第三重锤(133)之间的螺纹连接处于解锁状态。
  18. 根据权利要求1所述的限压结构，其特征在于，所述限压结构还包括：
    固定板(110)，所述固定板(110)上设置有定位孔(112)和用于避让所述排气管(104)的避让孔(113)；
    其中，所述多个重锤包括位于最下层的第一重锤(131)，所述第一重锤(131)上设置有用于插设在所述定位孔(112)内的定位柱(1312)。
  19. 一种压力锅，包括排气管(104)和用于将重力压设在所述排气管(104)上的限压结构，其特征在于，所述限压结构为权利要求1至18中任一项所述的限压结构。
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