Pressure switch of electric pressure cookerTechnical Field
The invention relates to the field of switches, in particular to a pressure switch of an electric pressure cooker.
Background
With the increasing level of living of people, electric pressure cooker has been effectively popularized, and household users are basically provided with electric pressure cooker. As an important kitchen appliance, the electric pressure cooker greatly reduces the difficulty of cooking, but also brings additional safety problems, and the electric pressure cooker is damaged or even exploded due to the excessive pressure in the cooker. The pressure of the inner cooker is regulated by a pressure switch of the electric pressure cooker at present, and particularly, the inner cooker is continuously heated, heated and boosted, a heating disc is downwards pressed by the inner cooker, the pressure switch is connected with the heating disc, when the pressure value reaches the preset pressure, the main board is powered off by the pressure switch, heating is stopped, the pressure cooker is electrified again by the pressure switch after the pressure value is cooled to a certain temperature, and the cycle is repeated. However, the traditional pressure switch of the electric pressure cooker is complex in structure, needs to be compounded by five plates, is high in manufacturing cost, and needs to be manufactured by expensive pure copper in order to ensure structural stability, so that the pressure switch of the electric pressure cooker is high in price for a long time and is difficult to improve.
Disclosure of Invention
In view of the above, the invention provides a pressure switch of an electric pressure cooker, which has simple and compact structure, occupies less space, can effectively save materials and reduce the manufacturing cost of products.
The aim of the invention is achieved by the following technical scheme:
the utility model provides an electric pressure cooker pressure switch, includes the fixed column, with fixed column connected rigidity long piece and rigidity short piece, with rigidity long piece rotate the shell fragment of being connected and drive shell fragment pivoted trigger piece, trigger piece including run through in rigidity long piece and shell fragment setting screw, with screw threaded connection's block and the spring of overcoat screw rod department on the screw, spring elasticity compression is between shell fragment and rigidity long piece.
Preferably, the fixing column is made of insulating materials, and the rigid long sheet, the rigid short sheet and the elastic sheet are made of conductive materials.
Preferably, the rigid long sheet is provided with a vertical sheet intersected with the plane where the rigid long sheet is located, the vertical sheet is provided with a connecting joint, and the elastic sheet takes the connecting joint as the center and is driven to rotate by the trigger block.
Preferably, the elastic sheet comprises a middle straight sheet, a first bending sheet and a first straight sheet which are positioned on one side of the middle straight sheet, and a second bending sheet and a second straight sheet which are positioned on the other side of the middle straight sheet, wherein the first bending sheet and the second bending sheet are connected with one end part of the middle straight sheet, and the first straight sheet and the second straight sheet are connected with the other end part of the middle straight sheet.
Preferably, a gap exists between the first bending piece and the first straight piece, a gap exists between the second bending piece and the second straight piece, the elastic piece is provided with two vertical pieces and two connecting joints, the two vertical pieces and the two connecting joints are respectively marked as a first connecting joint and a second connecting joint, the first connecting joint is positioned at the gap between the first bending piece and the first straight piece, and the second connecting joint is positioned at the gap between the second bending piece and the second straight piece.
Preferably, the first bending piece is bent toward the rigid long piece direction, and the second bending piece is bent toward the rigid long piece direction.
Preferably, the first bending piece is provided with a first baffle plate, the first straight piece is provided with a second baffle plate, the first connecting joint is surrounded by the first bending piece, the first baffle plate, the first straight piece and the second baffle plate, the second bending piece is provided with a third baffle plate, the second straight piece is provided with a fourth baffle plate, and the second connecting joint is surrounded by the second bending piece, the third baffle plate, the second straight piece and the fourth baffle plate.
Preferably, the rigid short sheet is provided with a first contact, the elastic sheet is provided with a second contact, when the elastic sheet is not acted by external force, the first contact is contacted with the second contact and electrically connected, the rigid long sheet is provided with a bulge, and the bulge center, the first contact center and the second contact center are positioned on the same straight line.
Preferably, the rigid long sheet is provided with a long sheet sleeve hole sleeved on the fixed column and a long sheet binding post connected with an external circuit, and the rigid short sheet is provided with a short sheet sleeve hole sleeved on the fixed column and a short sheet binding post connected with the external circuit.
Preferably, the standing piece is integrally formed with the rigid long piece.
Compared with the prior art, the invention has the beneficial effects that:
The pressure switch of the electric pressure cooker is different from the traditional five-plate composite structure with complex structure, can realize the function of the pressure switch by only three plates, can effectively reduce the quantity of materials required for manufacturing the pressure switch, does not need to be manufactured by expensive pure copper, can effectively reduce the unit price of the materials, and can improve the current situation that the traditional pressure switch of the electric pressure cooker is high in price for a long time. The structure is simple and compact, occupies less space, can effectively save materials and reduce the manufacturing cost of products.
Drawings
Fig. 1 is a three-dimensional structural diagram of a pressure switch of an electric pressure cooker in an embodiment of the invention.
Fig. 2 is a three-dimensional structural diagram of a pressure switch of an electric pressure cooker in an embodiment of the invention.
Fig. 3 is a side view of a pressure switch of an electric pressure cooker in accordance with an embodiment of the invention.
Fig. 4 is a block diagram of a spring plate according to an embodiment of the present invention.
Fig. 5 is a block diagram of a spring plate according to an embodiment of the present invention.
Fig. 6 is a block diagram of a rigid long sheet in an embodiment of the invention.
Fig. 7 is a block diagram of a rigid long sheet in an embodiment of the invention.
Detailed Description
The present invention will be described in further detail below with reference to specific embodiments and drawings for the understanding of those skilled in the art.
Referring to fig. 1-7, an embodiment of the present invention includes:
The utility model provides an electric pressure cooker pressure switch, includes fixed column 1, rigid long piece 2 and the rigidity short piece 3 of being connected with fixed column 1, rotate the shell fragment 4 of being connected with rigid long piece 2, and drive shell fragment 4 pivoted trigger piece 5, trigger piece 5 is including running through in the screw 6 that rigid long piece 2 and shell fragment 4 set up, with screw 6 threaded connection's block 7, and the spring 8 of overcoat screw rod department on screw 6, spring 8 elasticity compression is between shell fragment 4 and rigid long piece 2. The fixed column 1 is made of insulating materials, and the rigid long sheet 2, the rigid short sheet 3 and the elastic sheet 4 are made of conductive materials.
The rigid long sheet 2 is provided with a vertical sheet 9 intersected with the plane where the rigid long sheet 2 is positioned, the vertical sheet 9 is provided with a connecting joint, and the elastic sheet 4 takes the connecting joint as the center and is driven to rotate by the trigger block 5. The elastic sheet 4 comprises a middle straight sheet 10, a first bending sheet 11 and a first straight sheet 12 which are positioned on one side of the middle straight sheet 10, and a second bending sheet 13 and a second straight sheet 14 which are positioned on the other side of the middle straight sheet 10, wherein the first bending sheet 11 and the second bending sheet 13 are connected with one end part of the middle straight sheet 10, and the first straight sheet 12 and the second straight sheet 14 are connected with the other end part of the middle straight sheet 10. The first bending piece 11 and the first straight piece 12 have a gap, the second bending piece 13 and the second straight piece 14 have a gap, the elastic piece 4 has two standing pieces and two connecting joints, respectively denoted as a first connecting joint 15 and a second connecting joint 16, the first connecting joint 15 is located at the gap between the first bending piece 11 and the first straight piece 12, and the second connecting joint 16 is located at the gap between the second bending piece 13 and the second straight piece 14. The first bending piece 11 is bent toward the rigid long piece 2, and the second bending piece 13 is bent toward the rigid long piece 2.
The first bending piece 11 is provided with a first baffle plate 17, the first straight piece 12 is provided with a second baffle plate 18, the first connecting joint 15 is jointly enclosed by the first bending piece 11, the first baffle plate 17, the first straight piece 12 and the second baffle plate 18, the second bending piece 13 is provided with a third baffle plate 19, the second straight piece 14 is provided with a fourth baffle plate 20, and the second connecting joint 16 is jointly enclosed by the second bending piece 13, the third baffle plate 19, the second straight piece 14 and the fourth baffle plate 20. The rigid short piece 3 is provided with a first contact 21, the elastic piece 4 is provided with a second contact 22, when the elastic piece 4 is not acted by external force, the first contact 21 is in contact with the second contact 22 and is electrically connected with the second contact 22, the rigid long piece 2 is provided with a protrusion 23, and the center of the protrusion 23, the center of the first contact 21 and the center of the second contact 22 are positioned on the same straight line. The rigid long sheet 2 is provided with a long sheet sleeve hole 24 sleeved on the fixed column 1 and a long sheet binding post 25 connected with an external circuit, and the rigid short sheet 3 is provided with a short sheet sleeve hole sleeved on the fixed column 1 and a short sheet binding post 26 connected with the external circuit. The vertical piece 9 and the rigid long piece 2 are integrally formed.
The electric pressure cooker inner heating system is connected with the electric pressure cooker inner heating system to heat the inner cooker, when the pressure of the inner cooker is larger than the preset pressure, the block 7 descends and contacts and extrudes the elastic sheet 4, the elastic sheet 4 descends under the action of the block 7, when the elastic sheet 4 descends to an inflection point, the elastic sheet 4 rotates by taking the vertical sheet 9 as a rotation center, the second contact 22 is separated from the first contact 21 after rotation, the electric pressure cooker inner heating system is disconnected, and the electric pressure cooker inner heating system is used for heating the inner cooker. And repeatedly heating until reaching the preset heating time.
While the invention has been described in conjunction with the specific embodiments above, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art in light of the foregoing description. Accordingly, all such alternatives, modifications, and variations are included within the spirit and scope of the following claims.