CN103784004B - Safe pressure relief non-self-resetting mechanism of electric pressure cooker and electric pressure cooker - Google Patents

Abstract

The invention relates to the technical field of electric pressure cookers, in particular to a safe pressure relief non-self-resetting mechanism of an electric pressure cooker and the electric pressure cooker, wherein the safe pressure relief non-self-resetting mechanism of the electric pressure cooker comprises a bracket, an adjusting plate, a reset spring, a driving lever, a circuit switch and an adjusting screw rod, wherein the adjusting plate is fixed on the bracket; the driving lever comprises a front rod end part, a rear rod end part, a middle rod part and a convex part arranged in the middle rod part; the front end part of the rod extends to the circuit switch and is used for controlling the circuit switch to be turned on or off; the return spring is arranged on the adjusting plate and is buckled with the rear end part of the rod; the front end of the adjusting plate is provided with a through hole used for being buckled with the convex part and a baffle used for pushing the convex part. The mechanism of the electric pressure cooker for safely relieving pressure and not automatically resetting can ensure that the electric pressure cooker avoids the danger of the electric pressure cooker that the cooker is easily exploded once the safety valve and the electric control system fail; and the safe pressure relief mechanism can be started in advance by pressure relief, so that accidents are prevented.

Description

A non-self-resetting mechanism for safe pressure relief of electric pressure cooker and electric pressure cooker

technical field

The invention relates to the technical field of electric pressure cooker, in particular to an electric pressure cooker safety pressure relief non-self-resetting mechanism and the electric pressure cooker.

Background technique

Electric pressure cookers are widely used due to their advantages of being able to cook food quickly. At present, commonly used electric pressure cookers are equipped with an electric control system and a safety valve. During the cooking process of the electric pressure cooker, when the pressure in the pot rises above the set pressure, the electric control system controls the safety valve to open automatically, and then the high-pressure gas flows from The vent hole of the safety valve is discharged; when the pressure of the electric pressure cooker drops to the standard pressure, the electric control system controls the safety valve to close automatically. However, once the safety valve and the electric control system fail, the electric pressure cooker is prone to the danger of explosion. Therefore, the existing electric pressure cooker has correspondingly installed a safety pressure relief mechanism for the above-mentioned potential safety hazards. However, it is difficult to accurately adjust the level of the pressure relief pressure in the safety pressure relief mechanism installed in the electric pressure cooker of the prior art, and the production process The disadvantages of complexity and high production cost.

Contents of the invention

One of the objectives of the present invention is to provide a non-self-resetting mechanism for safe pressure relief of an electric pressure cooker that can precisely control the pressure relief pressure, has a simple process and low production cost.

The second object of the present invention is to provide an electric pressure cooker capable of precisely controlling the pressure release pressure, simple production process and low production cost in view of the deficiencies in the prior art.

In order to achieve one of the above objects, the present invention is achieved through the following technical solutions.

Provide a non-self-resetting mechanism for safe pressure relief of an electric pressure cooker, including a bracket, an adjustment plate fixed to the bracket, a return spring, a driving lever and a circuit switch, and an adjustment screw installed on the adjustment plate;

The driving lever includes a rod front end, a rod rear end and a rod middle part, and a protruding piece arranged in the rod middle part; the rod front end extends to the circuit switch and is used to control the opening or closing of the circuit switch ;

The return spring is installed on the adjustment plate and fastened with the rear end of the rod;

The front end of the adjusting plate is provided with a through hole for fastening with the protruding piece, and a baffle plate for abutting against the protruding piece.

The bracket sequentially includes a first fixing part, a second fixing part and a third fixing part; the return spring and the adjusting plate are fixed to the first fixing part, and the driving lever is fixed to the second fixing part , the circuit switch is fixed on the third fixing part;

The first fixing portion includes two corresponding first fixing pieces, and a first fixing rod connected to the two corresponding first fixing pieces; the second fixing portion includes two corresponding first fixing pieces. two fixing pieces, and a second fixing rod connected to the two corresponding second fixing pieces;

The third fixing part is provided with a screw hole and a connector, and the circuit switch is fixed to the third fixing part through the screw hole and the connector.

Both the first fixing piece and the second fixing piece are provided with fixing holes, the first fixing rod connects the two corresponding first fixing pieces through the fixing hole, and the second fixing rod passes through the fixing hole The fixing holes connect the two corresponding second fixing pieces.

The third fixing part is also provided with a hole through which the front end of the rod passes.

The return spring includes a first spring, a second spring, a folding hook connected to the first spring and the second spring, a first tail extended by the first spring, and a first tail extended by the second spring. the second tail of the spring extension;

The folding hook is fastened to the rear end of the rod, the first spring and the second spring are sleeved on the first fixing rod, and the first tail and the second tail are fixedly connected on the adjustment plate.

The middle part of the adjustment plate is provided with a first installation hole for being sleeved on the first fixing rod; the rear end of the adjustment board is provided with a second installation hole for installation of the adjustment screw.

The middle part of the rod of the driving lever is also provided with two corresponding hanging lugs, and the two corresponding hanging lugs are both provided with a third mounting hole for being sleeved on the second fixing rod.

The rear end of the rod is provided with a bent portion.

The circuit switch is provided with a button, and the front end of the rod extends above the button.

In order to achieve the second object above, the present invention is realized through the following technical solutions.

An electric pressure cooker, including an outer cover and a heating plate, the heating plate is provided with a heating plate column, and it is characterized in that it also includes the above-mentioned safety pressure relief non-self-resetting mechanism of the electric pressure cooker set at the bottom of the outer cover , the adjusting screw is arranged below the post of the heating plate.

Beneficial effects of the present invention:

(1) The non-self-resetting mechanism for safe pressure relief of an electric pressure cooker according to the present invention can avoid the risk of explosion of the electric pressure cooker once the safety valve and the electric control system fail.

(2) The non-self-resetting mechanism for safe pressure relief of an electric pressure cooker of the present invention can precisely control the level of pressure relief, and has the advantages of simple production process, low production cost and long service life.

(3) A non-self-resetting mechanism for safe pressure relief of an electric pressure cooker of the present invention has the advantages of simple structure and being applicable to large-scale production.

(4) The electric pressure cooker of the present invention can precisely control the level of pressure relief, and has the advantages of simple production process, low production cost and long service life.

Description of drawings

Fig. 1 is a structural schematic diagram of a non-self-resetting mechanism for safe pressure relief of an electric pressure cooker according to the present invention.

Fig. 2 is a structural schematic view from another perspective of a non-self-resetting mechanism for safe pressure relief of an electric pressure cooker according to the present invention.

Fig. 3 is a structural schematic diagram of a non-self-resetting mechanism for safe pressure relief of an electric pressure cooker according to the present invention after the support is removed.

Fig. 4 is a structural schematic diagram of a bracket of a safety pressure relief non-self-resetting mechanism of an electric pressure cooker according to the present invention.

Fig. 5 is a structural schematic diagram of an adjusting plate of a safety pressure relief non-self-resetting mechanism of an electric pressure cooker according to the present invention.

Fig. 6 is a structural schematic diagram of a driving lever of a safety pressure relief non-self-resetting mechanism of an electric pressure cooker according to the present invention.

Fig. 7 is a structural schematic diagram of a return spring of a non-self-resetting mechanism for safe pressure relief of an electric pressure cooker according to the present invention.

Fig. 8 is a structural schematic diagram of a circuit switch of a non-self-resetting mechanism for safe pressure relief of an electric pressure cooker according to the present invention.

Fig. 9 is a schematic structural view of an electric pressure cooker of the present invention.

In Figures 1 to 9 include:

1——bracket, 11—first fixing part, 12—second fixing part, 13—third fixing part, 101—first fixing piece, 102—first fixing rod, 103—second Fixing piece, 104—the second fixing rod, 105—screw hole, 106—connector, 107—hole,

2——adjusting plate, 21—through hole, 22—baffle plate, 23—the first installation hole, 24—the second installation hole,

3—return spring, 31—the first spring, 32—the second spring, 33—the folding hook, 34—the first tail, 35—the second tail,

4—drive lever, 41—front end of rod, 42—rear end of rod, 43—middle part of rod, 44—protruding piece, 45—hanging ear, 401—third mounting hole, 402— bending part,

5—circuit switch, 51—button, 52—receptacle hole, 53—second screw hole,

6——Adjusting screw,

7—outer cover,

8—heating plate, 81—heating plate pillar.

Detailed ways

The present invention will be further described in conjunction with the following examples.

Example 1.

See Figures 1 to 8. A non-self-resetting mechanism for safe pressure relief of an electric pressure cooker in this embodiment includes a bracket 1, an adjustment plate 2 fixed to the bracket 1, a return spring 3, a drive lever 4 and a circuit switch 5, and a switch mounted on the adjustment plate 2. Adjusting screw 6;

The driving lever 4 includes a rod front end 41, a rod rear end 42 and a rod middle part 43, and a protrusion 44 arranged at the rod middle part 43; the rod front end 41 extends to the circuit switch 5 and is used to control the opening or closing of the circuit switch 5;

The return spring 3 is installed on the adjusting plate 2 and fastened with the rear end 42 of the rod; The fastening between them is firm and not easy to loosen.

The front end of the adjusting plate 2 is provided with a through hole 21 for fastening with the protruding piece 44 and a baffle plate 22 for abutting against the protruding piece 44 . The protruding piece 44 touches the baffle plate 22, so that the driving lever 4 cannot be reset, so that the circuit switch 5 cannot be closed, and the main power supply is in a disconnected state, so that the electric pressure cooker cannot work. Wherein, during the normal use of the electric pressure cooker, the circuit switch 5 is in a normally closed state, that is, in an on state.

In this embodiment, the bracket 1 sequentially includes a first fixed portion 11, a second fixed portion 12 and a third fixed portion 13; the return spring 3 and the adjustment plate 2 are fixed on the first fixed portion 11, and the driving lever 4 is fixed on the second fixed portion. part 12, the circuit switch 5 is fixed on the third fixed part 13;

The first fixing part 11 includes two corresponding first fixing parts 101, and the first fixing rod 102 connected to the two corresponding first fixing parts 101; the second fixing part 12 includes two corresponding second a fixing piece 103, and a second fixing rod 104 connected to two corresponding second fixing pieces 103;

The third fixing part 13 is provided with a screw hole 105 and a connector 106 , and the circuit switch 5 is fixed to the third fixing part 13 through the screw hole 105 and the connector 106 . The circuit switch 5 is provided with a socket hole 52 for matching with the socket piece 106 . The circuit switch 5 is also provided with a second screw hole 53 for matching with the screw hole 105 .

In this embodiment, the first fixing member 101 and the second fixing member 103 are provided with fixing holes, the first fixing rod 102 connects two corresponding first fixing members 101 through the fixing holes, and the second fixing rod 104 passes through the fixing holes Two corresponding second fixing pieces 103 are connected.

In this embodiment, the third fixing portion 13 is also provided with a hole 107 for the front end portion 41 of the rod to pass through.

In this embodiment, the return spring 3 includes a first spring 31, a second spring 32, a folding hook 33 connected to the first spring 31 and the second spring 32, and a first tail 34 extending from the first spring 31, and a second tail 35 extended by a second spring 32;

In this embodiment, the folding hook 33 is fastened to the rod rear end 42, the first spring 31 and the second spring 32 are sleeved on the first fixed rod 102, and the first tail 34 and the second tail 35 are fixedly connected to the adjustment rod. The rear end of the plate 2. In this embodiment, a first installation hole 23 for sleeved on the first fixing rod 102 is opened in the middle of the adjustment plate 2 ; a second installation hole 24 for installation of the adjustment screw 6 is opened in the rear end of the adjustment plate 2 . Wherein, the folding hook 33 is always fastened to the bending portion 402 before and after the start-up of the non-self-resetting safety pressure relief mechanism of the electric pressure cooker, and the bending portion 402 prevents the folding hook 33 from detaching from the rod rear end 42 .

In this embodiment, the rod middle part 43 of the driving lever 4 is also provided with two corresponding hanging ears 45, and the two corresponding hanging ears 45 are provided with a third mounting hole 401 for being sleeved on the second fixing rod 104 .

In this embodiment, the circuit switch 5 is provided with a button 51 , and the front end portion 41 of the rod extends above the button 51 .

The working principle of the safety pressure relief non-self-resetting mechanism of the electric pressure cooker: when the pressure in the pot body of the electric pressure cooker is greater than the pressure limit pressure, the heating plate set at the bottom of the pot body is under pressure and the heating plate is pushed down to adjust The screw rod 6 moves down, and the adjusting screw rod 6 moving downward drives the rear end of the adjusting plate 2 to move down. Since the middle part of the adjusting plate 2 is sleeved on the first fixing rod 102 through the first installation hole 23, the middle part of the adjusting plate 2 Rotate around the first fixed rod 102, and then drive the front end of the adjustment plate 2 to move up, so that the through hole 21 is separated from the convex piece 44, that is, the through hole 21 is no longer engaged with the convex piece 44, and the convex piece 44 is separated from the through hole 21 After coming out, it touches the baffle plate 22. At this time, the folding hook 33 is always fastened to the bending part 402; at the same time, when the rear end of the adjustment plate 2 moves down, the The first tail portion 34 and the second tail portion 35 also move down. Since the first spring 31 and the second spring 32 are sleeved on the first fixed rod 102, the return spring 3 rotates around the first fixed rod 102, thereby driving When the folding hook 33 moves upward, the upwardly moving folding hook 33 will lift the rod rear end 42 upwards. Since the rod middle part 43 of the driving lever 4 is sleeved on the second fixed rod 104 through the hanging ear 45, the rod middle part 43 will wrap around the second fixed rod 104. The second fixed rod 104 rotates, and then drives the rod front end 41 to press down the button 51, thereby driving the circuit switch 5, so that the circuit of the electric pressure cooker is disconnected, and the main power supply of the electric pressure cooker is turned off, thereby preventing the electric pressure cooker from bursting. danger.

Example 2.

See Figure 9. An electric pressure cooker in this embodiment includes an outer cover 7 and a heating plate 8, the heating plate 8 is provided with a heating plate column 81, and also includes an electric pressure cooker according to the embodiment 1 which is arranged at the bottom of the outer cover 7 and contacts with the heating plate 8 As a non-self-resetting mechanism for safety pressure relief, the adjusting screw 6 is arranged below the post 81 of the heating plate. When the internal pressure of the electric pressure cooker is greater than the pressure limit, the heating plate 8 sinks under the pressure and makes the heating plate column 81 touch the adjusting screw 6 downward, and the adjusting screw 6 moves down to drive the rear end of the adjusting plate 2 to move down. , and then as described in the working principle of the non-self-resetting mechanism for safety pressure relief of the electric pressure cooker in Embodiment 1, the circuit switch is finally driven to disconnect the main power supply of the electric pressure cooker, thereby preventing the danger of the electric pressure cooker from bursting. . Since the electric pressure cooker is equipped with a non-self-resetting mechanism for safe pressure relief of the electric pressure cooker in Embodiment 1, the electric pressure cooker can accurately control the level of the pressure relief pressure, and has the advantages of simple production process, low production cost and long service life The advantages.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than limit the protection scope of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that Modifications or equivalent replacements are made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.

Claims (10)

1. a mechanism for electric pressure cooking saucepan safety relief non-automatic-reset, is characterized in that: comprise support, and is fixed on the adjustable plate of described support, back-moving spring, activation lever and contactor, and is installed on the adjusting screw(rod) of described adjustable plate;

Described activation lever comprises in the middle part of bar leading section, rod rear end portion and bar, and is arranged at the male member in the middle part of described bar; Described bar leading section extends to described contactor and for controlling opening or closing of described contactor;

Described back-moving spring be installed on described adjustable plate and with described rod rear end portion snapping;

The leading section of described adjustable plate is provided with the through hole for fastening with described male member, and for contacting the baffle plate of described male member.

2. the mechanism of a kind of electric pressure cooking saucepan safety relief non-automatic-reset according to claim 1, is characterized in that: described support comprises the first fixed part, the second fixed part and the 3rd fixed part successively; Described back-moving spring and described adjustable plate are fixed on described first fixed part, and described activation lever is fixed on described second fixed part, and described contactor is fixed on described 3rd fixed part;

Described first fixed part comprises two the first corresponding fixtures, and is connected to the first fixed bar of described two corresponding the first fixtures; Described second fixed part comprises two the second corresponding fixtures, and is connected to the second fixed bar of described two corresponding the second fixtures;

Described 3rd fixed part is provided with screw hole and plug connector, and described contactor is fixed on described 3rd fixed part by described screw hole and described plug connector.

3. the mechanism of a kind of electric pressure cooking saucepan safety relief non-automatic-reset according to claim 2, it is characterized in that: described first fixture and described second fixture all offer fixing hole, described first fixed bar connects described two corresponding the first fixtures by described fixing hole, and described second fixed bar connects described two corresponding the second fixtures by described fixing hole.

4. the mechanism of a kind of electric pressure cooking saucepan safety relief non-automatic-reset according to claim 2, is characterized in that: described 3rd fixed part also offers the hole portion passed for described bar leading section.

5. the mechanism of a kind of electric pressure cooking saucepan safety relief non-automatic-reset according to claim 2, it is characterized in that: described back-moving spring comprises the first spring, the second spring, and be connected to the folding hook of described first spring and described second spring, and by described first spring extend the first afterbody, and by described second spring extend the second afterbody;

Described folding hook and described rod rear end portion snapping, described first spring and described second spring are all sheathed on described first fixed bar, and described first afterbody and described second afterbody are all fixedly connected on described adjustable plate.

6. the mechanism of a kind of electric pressure cooking saucepan safety relief non-automatic-reset according to claim 2, is characterized in that: the middle part of described adjustable plate offers the first installing hole for being sheathed on described first fixed bar; The rearward end of described adjustable plate offers the second installing hole for installing described adjusting screw(rod).

7. the mechanism of a kind of electric pressure cooking saucepan safety relief non-automatic-reset according to claim 2, it is characterized in that: be also provided with two corresponding hangers in the middle part of the bar of described activation lever, described two corresponding hangers all offer the 3rd installing hole for being sheathed on described second fixed bar.

8. the mechanism of a kind of electric pressure cooking saucepan safety relief non-automatic-reset according to claim 1, is characterized in that: described rod rear end portion is provided with bending part.

9. the mechanism of a kind of electric pressure cooking saucepan safety relief non-automatic-reset according to claim 1, it is characterized in that: described contactor is provided with button, described bar leading section extends to the top of described button.

10. an electric pressure cooking saucepan, comprise outer cover and heat-generating disc, described heat-generating disc is provided with heat-generating disc pillar, it is characterized in that: the mechanism also comprising a kind of electric pressure cooking saucepan safety relief non-automatic-reset described in claim 1 to 9 any one being arranged at described shield base, described adjusting screw(rod) is arranged at the below of described heat-generating disc pillar.