SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a pressure cooker and prevent uncapping device thereof to solve the problem that prevents the unexpected uncapping of pressure cooker.
One aspect of the utility model provides an anti-cover-opening device of a pressure cooker, which comprises a shell, more than one upper cover lock catch, more than one cover-opening lock catch, a transmission plate, a transmission component and a drive button, wherein,
the upper cover lock catch is buckled with the cover opening lock catch, the upper cover lock catch is connected with the transmission plate, the transmission plate is connected with one end of the transmission assembly, and the other end of the transmission assembly is contacted with the driving button;
the upper cover lock catch is connected with an upper cover of the pressure cooker through a first shaft sleeved with a first torsion spring, the cover opening lock catch is fixed on the shell, and the upper cover lock catch rotates relative to the cover opening lock catch by taking the first shaft as a rotation center;
the transmission plate is connected with the shell through a second shaft sleeved with a second torsion spring and rotates by taking the second shaft as a rotation center;
the transmission assembly comprises a transmission rod and a transmission spring sleeved on the transmission rod, the tail end of the transmission rod penetrates through the transmission plate, one end of the transmission spring abuts against the head end of the transmission rod, and the other end of the transmission spring abuts against the transmission plate;
the driving button is connected with the head end of the transmission rod.
In some embodiments, preferably, the upper cover lock catch is of an "L" shaped structure, and the open cover lock catch is of a transverse plate structure; the upper cover lock catch and the cover opening lock catch are buckled in a mode that the upper cover lock catch hooks the cover opening lock catch.
In some embodiments, preferably, the transmission assembly further comprises: buffer spring more than two, buffer spring with the transfer line sets up for the symmetry axis is relative, every buffer spring's head end with drive button fixed connection, after buffer spring pressurized, its tail end passes the casing withstands the driving plate.
In some embodiments, preferably, the leading end of the driving rod is spaced from the driving plate by a length L1, the leading end of the buffer spring is spaced from the driving plate by a length L2, and L2 is greater than L1.
In some embodiments, it is preferable that the ends of the push plate extend to push the push plate, and the extending end of the push plate abuts against the upper cover lock catch and pushes the upper cover lock catch when rotating with the driving plate.
In some embodiments, preferably, the tail end of the transmission rod is in snap-fit connection with the transmission plate to prevent the transmission rod from sliding out of the transmission plate when moving towards the driving button.
In some embodiments, preferably, the driving rod penetrates into the through hole of the driving plate, and the locking connection mode is as follows: the tail end of the transmission rod is provided with a convex edge, and the convex edge is blocked by the edge of the through hole.
In some embodiments, it is preferable that the driving button extends to the inside of the housing to form two or more extension arms, and the extension arms abut against the housing as the driving button moves to the inside of the housing.
In some embodiments, preferably, when the inner pressure of the pressure cooker is greater than 4KPa, the friction force between the cover-up lock and the cover-down lock is F, and the maximum acting force of the transmission spring is smaller than F.
In some embodiments, preferably, the cover opening preventing device of the pressure cooker further comprises: a floater and a swing rod; the floater is positioned in a corresponding cavity of the shell and floats up and down along with the pressure in the cooker in the cavity; the swing rod is connected to the upper part of the shell through a third shaft sleeved with a third torsion spring, and the swing rod swings left and right by taking the third shaft as a rotation center; the swing rod is provided with a groove for accommodating the floating floater at the position corresponding to the floater; one end of the swing rod presses the upper cover lock catch.
The utility model discloses another aspect still provides a pressure cooker, include: the pressure cooker cover opening preventing device comprises a pressure cooker shell, a pressure cooker inner cooker and the pressure cooker cover opening preventing device, wherein the pressure cooker cover opening preventing device is arranged between the pressure cooker shell and the pressure cooker inner cooker.
Compared with the prior art, the pressure cooker and the cover opening prevention device thereof provided by the embodiment of the utility model have the advantages that the upper cover lock catch and the cover opening lock catch are buckled, and the acting force between the upper cover lock catch and the cover opening lock catch is friction force; the transmission plate pushes the upper cover lock catch to slide in the rotation by taking the second shaft as a rotation center, so that the upper cover lock catch is separated from the cover lock catch to open the cover, and the transmission plate is acted by friction force between the upper cover lock catch and the cover opening lock catch; in order to prevent that the driving plate from rotating, the utility model discloses the people has set up drive assembly, and drive spring among the drive assembly withstands the driving plate, and when pressing drive button, drive button promotes the transfer line and removes, and the transfer line promotes the compression of drive spring, and drive spring is in the compression, and the driving plate receives the effort of two aspects, and the effort of one side is drive spring's reaction force, and the effort of on the other hand is upper cover hasp and the frictional force between the hasp of uncapping. When the acting force of the transmission spring is smaller than that of the other side, the transmission plate cannot be pushed; when the force of the transmission spring is greater than the force of the other side, the transmission plate is pushed. Therefore, the rotation of the transmission plate can be controlled by adjusting the spring compression capacity of the transmission spring, and the structure can effectively prevent the pressure cooker from being opened accidentally when the pressure cooker has certain pressure.
Detailed Description
The present invention will be described in further detail with reference to the following detailed description of specific embodiments thereof, which is illustrated in the accompanying drawings.
The utility model provides a pressure cooker and prevent uncapping device thereof, the problem that unexpected uncapping can cause the injury to the operator when considering pressure cooker pressure great in the pressure cooker.
This opening prevention device for pressure cooker includes: the device comprises a shell, more than one upper cover lock catch, more than one cover opening lock catch, a transmission plate, a transmission assembly and a drive button, wherein the upper cover lock catch and the cover opening lock catch are buckled, the upper cover lock catch is connected with the transmission plate, the transmission plate is connected with one end of the transmission assembly, and the other end of the transmission assembly is contacted with the drive button;
the upper cover lock catch is connected with an upper cover of the pressure cooker through a first shaft sleeved with a first torsion spring, the cover opening lock catch is fixed on the shell, and the upper cover lock catch rotates relative to the cover opening lock catch by taking the first shaft as a rotation center;
the transmission plate is connected with the shell through a second shaft sleeved with a second torsion spring and rotates by taking the second shaft as a rotation center;
the transmission assembly comprises a transmission rod and a transmission spring sleeved on the transmission rod, the tail end of the transmission rod penetrates through the transmission plate, one end of the transmission spring abuts against the head end of the transmission rod, and the other end of the transmission spring abuts against the transmission plate;
the driving button is connected with the head end of the transmission rod.
A pressure cooker comprising: the pressure cooker cover opening preventing device comprises a pressure cooker shell, a pressure cooker inner cooker and the pressure cooker cover opening preventing device, wherein the pressure cooker cover opening preventing device is arranged between the pressure cooker shell and the pressure cooker inner cooker.
The upper cover lock catch and the cover opening lock catch are buckled, and the acting force between the upper cover lock catch and the cover opening lock catch is friction force; the transmission plate pushes the upper cover lock catch to slide in the rotation by taking the second shaft as a rotation center, so that the upper cover lock catch is separated from the cover lock catch to open the cover, and the transmission plate is acted by friction force between the upper cover lock catch and the cover opening lock catch; in order to prevent the transmission plate from rotating, the inventor sets up a transmission assembly, a transmission spring in the transmission assembly props against the transmission plate, when the drive button is pressed, the drive button pushes the transmission rod to move, the transmission rod pushes the transmission spring to compress, the transmission spring is compressed, the transmission plate is acted by two aspects of acting force, the acting force on one hand is the reaction force of the transmission spring, and the acting force on the other hand is the friction force between the upper cover lock catch and the cover opening lock catch. When the acting force of the transmission spring is smaller than that of the other side, the transmission plate cannot be pushed; when the force of the transmission spring is greater than the force of the other side, the transmission plate is pushed. Therefore, the rotation of the transmission plate can be controlled by adjusting the spring compression capacity of the transmission spring.
Next, the pressure cooker lid opening prevention device will be described in detail:
an anti-open cover device of a pressure cooker, as shown in figure 1, comprises: the pressure cooker comprises a shell 8, more than one upper cover lock catch 1, more than one cover opening lock catch 17, a transmission plate 14, a transmission assembly and a driving button 9, wherein the upper cover lock catch 1 is connected with an upper cover of the pressure cooker through a first shaft 10 sleeved with a first torsion spring 2, and the first shaft 10 penetrates through the axis of the first torsion spring 2 and is fixed on the upper cover; the upper cover lock catch 1 rotates relative to the cover opening lock catch 17 by taking the first torsion spring 2 as a rotation center, the first torsion spring 2 is compressed in the rotation of the upper cover lock catch 1, and then the first torsion spring 2 applies a resetting force; the cover opening lock catch 17 is fixed on the shell 8, the upper cover lock catch 1 and the cover opening lock catch 17 are buckled and are in close contact to generate friction force, when the air pressure in the pot is increased, the air pressure upwards extrudes the cover opening lock catch 17, and the friction force is increased; the transmission plate 14 is connected with the shell 8 through a second shaft 11 sleeved with a second torsion spring 5, the second shaft 11 penetrates through the axis of the second torsion spring 5 and is fixed on the shell 8, the transmission plate 14 rotates by taking the second torsion spring 5 as a rotation center, the transmission plate 14 compresses the second torsion spring 5 in rotation, and then the second torsion spring 5 applies a reset force; in order to enable the upper cover lock catch 1 to rotate, the upper cover lock catch 1 is connected with the transmission plate 14, and the upper cover lock catch 1 is pushed to rotate in the rotation of the transmission plate 14; in order to rotate the transmission plate 14, the transmission plate 14 is connected with one end of a transmission assembly, and the other end of the transmission assembly is contacted with the driving button 9; the transmission assembly comprises a transmission rod 12 and a transmission spring 13 sleeved on the transmission rod 12, wherein the tail end of the transmission rod 12 penetrates through a transmission plate 14, one end of the transmission spring 13 is propped against the head end 6 of the transmission rod 12, and the other end of the transmission spring 13 is propped against the transmission plate 14; when the transmission spring 13 is extruded, force for pushing the transmission plate 14 to rotate is generated; in order to press the transmission spring 13, the driving button 9 is connected with the head end 6 of the transmission rod 12, the driving button 9 is pressed, the driving button 9 presses the transmission rod 12, the transmission rod 12 moves towards the inner part of the shell 8, and the head end 6 of the transmission rod 12 presses the transmission spring 13.
The following structural design is carried out according to the required result, and the whole structure is operated: the driving button 9 is pressed, the driving button 9 pushes the transmission rod 12, the transmission rod 12 moves towards the inner direction of the shell 8, the head end 6 of the transmission rod 12 presses the transmission spring 13, the transmission spring 13 generates rebound force to push the transmission plate 14 to rotate, once the rebound force of the transmission spring 13 is larger than the friction force between the upper cover lock catch 1 and the cover opening lock catch 17, the transmission plate 14 can push the upper cover lock catch 1, the upper cover lock catch 1 gradually separates from the cover lock catch 17, the upper cover lock catch 1 and the cover opening lock catch are separated, and the upper cover of the pressure cooker is opened.
Wherein, to the structure of upper cover hasp 1 and uncap hasp 17 specifically, the inventor has carried out the simplest structural design: the upper cover lock catch 1 is of an L-shaped structure, and the cover opening lock catch 17 is of a transverse plate structure; the upper cover lock catch 1 and the cover opening lock catch 17 are buckled by hooking the cover opening lock catch 17 by the upper cover lock catch 1. The first torsion spring 2 is arranged on a vertical branch of the L, and a transverse branch of the L is superposed on the cover opening lock catch 17 up and down to generate transverse friction force.
The upper cover lock catches 1 correspond to the cover opening lock catches 17 one by one, the number of the upper cover lock catches 1 is at least 2, the upper cover lock catches are located at two ends of the cover opening prevention device, and balanced acting force is generated on the upper cover. If the number of the cover lock 1 is large, uniform distribution at the cross-sectional edge is selected.
Wherein, in order to generate the buffering force for pressing the driving button 9, the transmission assembly further comprises: the buffer springs 7 are arranged oppositely by taking the transmission rod 12 as a symmetrical shaft, balanced acting force is generated, the head end of each buffer spring 7 is fixedly connected with the driving button 9, and the tail end of each buffer spring 7 penetrates through the shell 8 to prop against the transmission plate 14 after being pressed. Pressing the drive button 9, the buffer spring 7 is first compressed; when the buffer spring 7 is extruded to a certain degree, the driving button 9 is contacted with the head end 6 of the transmission rod 12, and when the driving button 9 is continuously pushed, the driving button 9 pushes the transmission rod 12 to move; the buffer force is generated, and the hard acting force between the driving button 9 and the transmission rod 12 is avoided.
The length from the head end 6 of the transmission rod 12 to the transmission plate 14 is L1, the length from the head end of the buffer spring 7 to the transmission plate 14 is L2, and L2 is larger than L1.
In order to enable the driving plate 14 to push the upper cover lock catch 1 to rotate, the two ends of the driving plate 14 respectively extend the push plates 3, and the extending ends of the push plates 3 prop against the upper cover lock catch 1 in the rotation along with the driving plate 14 and push the upper cover lock catch 1.
When the transmission rod 12 moves towards the inside of the housing 8, the transmission spring 13 will apply a reaction force to the transmission rod 12 to push the transmission rod 12 to move in the opposite direction, and in order to prevent the transmission rod 12 from being separated from the transmission plate 14, the tail end of the transmission rod 12 is in snap-fit connection with the transmission plate 14 to prevent the transmission rod 12 from sliding out of the transmission plate 14 when moving towards the driving button.
In particular to the locking connection, the specific way is as shown in fig. 3: the transmission rod 12 penetrates into the through hole 16 of the transmission plate 1414, and the locking connection mode is as follows: the tail end of the transmission rod 12 is provided with a convex edge 15, and the convex edge 15 is blocked by the edge of the through hole 16.
In order to prevent the driving button 9 from moving towards the inside of the housing 8 without limitation, the driving button 9 extends more than two extension arms 4 towards the inside of the housing 8, and the extension arms 4 will be pressed against the housing 8 along with the movement of the driving button 9 towards the inside of the housing 8.
Based on the above analysis, the drive plate 14 is subjected to two forces: the force on the one hand is the reaction force of the transmission spring 13 and the force on the other hand is the friction force F between the lid lock 1 and the lid lock 17. When the pressure of the inner cooker of the pressure cooker is more than 4KPa, the friction force between the upper cover lock catch 1 and the cover opening lock catch 17 is F, and the maximum acting force of the transmission spring 13 is less than F. Then, when the pressure of the inner cooker reaches more than 4KPa, the pushing plate cannot be pushed, the upper cover lock catch 1 cannot rotate, the friction force between the upper cover lock catch 1 and the cover opening lock catch 17 is large, and the upper cover is locked and cannot be opened. If the pressure is low or the pressure inside and outside the upper cover is kept flat, the transmission spring 13 can push the pushing plate to rotate, the pushing plate pushes the upper cover lock catch 1 to rotate, the upper cover is unlocked, and the upper cover is opened.
In order to further avoid the unexpected rotation of upper cover hasp, should prevent that the device of uncapping still includes: a floater and a swing rod; wherein, the floater is arranged in the corresponding cavity of the shell and floats up and down in the cavity along with the pressure in the cooker; the swing rod is connected to the upper part of the shell through a third shaft sleeved with a third torsion spring and swings left and right by taking the third shaft as a rotation center; the swing rod is provided with a groove for accommodating the floating floater at the position corresponding to the floater; one end of the swing rod presses the upper cover lock catch. The oscillating bar presses the upper cover lock catch, the upper cover lock catch cannot rotate around the first torsion spring, and the cover of the pressure cooker cannot be opened accidentally; if the oscillating bar horizontally swings and is separated from the pressure on the upper cover lock catch, the upper cover lock catch can rotate, and the pressure cooker can be opened. Based on the principle, the floater floats upwards when the pressure in the cooker reaches a preset value, and is clamped into the groove of the swing rod, namely the swing rod is clamped, so that the swing rod is prevented from swinging horizontally left and right; once the pressure in the cooker is lower than the preset value, the floater sinks, the swing rod swings horizontally left and right without resistance and can swing freely to break away from the pressure on the upper cover lock catch. By the mode, the accidental uncovering of the pressure cooker can be avoided when certain pressure exists in the pressure cooker.
Based on the above-mentioned device for preventing cover from opening, the inventor has designed a pressure cooker, as shown in fig. 2, which comprises: the pressure cooker cover opening preventing device comprises a pressure cooker shell, a pressure cooker inner cooker and the pressure cooker cover opening preventing device, wherein the pressure cooker cover opening preventing device is arranged between the pressure cooker shell and the pressure cooker inner cooker.
It should be noted that the anti-uncovering device provided by the present invention is generally applied to pressure cookers with a pressure of 4-100KPa, preferably 30-40 KPa.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.