KR20000008146A - Combining device for holder lock type cover of pressure cooker - Google Patents

Abstract

PURPOSE: A combining device for a cover of a pressure cooker is provided to prevent a wrong operation and to reduce the number of component by not requiring a stopper for limiting the sliding range of a compressing member. CONSTITUTION: A device for combining a holder lock typed cover of a pressure cooker is formed by:four holders(80) being arranged between a rotary member(70) and an inner cover(30); a hanging piece(84) and a hanging groove(85) for biting the inner cover and an inner pot(20) for sealing inside of the inner pot; a projecting piece(83) being project formed along a deep aperture(82) for forming the upper surface of the holder; a head unit(87) being formed on the upper unit surfaces of the hanging piece and the hanging groove for pushing the holder in an unlocking state; and a concave unit(86) being concavely formed between the head unit and the projecting piece for operating a lock/unlock by receiving a lock projecting piece(72) and an unlock projecting piece(74).

Description

Holder lock lid fastening device of pressure cooker

The present invention relates to a pressure cooker, in particular, the holder is arranged at equal intervals with respect to the inner lid to the inner pot and the inner lid is a holder reciprocating the linear reciprocating movement toward the center of the cooker to lock and unlock lock) By adopting a rotary pressing method, the rice cooker can be opened and fastened smoothly by eliminating the fatigue phenomenon of the pressing member which repeats frequent contact and detachment, and the pressure cooker that enables the user with a small force when the pot lid is opened. It relates to a holder-lock lid fastening device.

In general, two types of pressure cookers are known. These include direct heating by fuel such as gas and electric pressure cooker by electric energy source having an electric heating unit therein. Recently, the latter is commercially available in large quantities for reasons such as safety and user convenience, and this is usually designed by adding a function of an insulated rice bowl which keeps warm function.

1 to 4 will be briefly described with respect to the lid fastening device of the conventional pressure cooker. 1 is an exploded perspective view showing a lid fastening portion of the lid fastening device of a conventional pressure cooker, Figure 2 is a cross-sectional view showing a closed state of the lid of the lid fastening device of a conventional pressure cooker, Figure 3 is a lid fastening of a conventional pressure cooker It is sectional drawing which shows the state of the lid | cover of an apparatus.

In these figures, reference numeral 10 is a pressing member forming an annular shape, 20 is an inner pot, and 30 is an inner lid inserted between the pressing member 10 and the inner pot 30.

The pressing member 10 is provided with an arm 12 so as to be able to flow on the upper side, the bottom portion of the circular circumference is integrally formed with the engaging jaw 16 of the cross-section 'b' shaped.

The arm 12 is composed of a 'b' shape as a whole and is used by the user when the crimping member 10 is squeezed by the inner pot 20 in a crimping manner, and the upper end portion is a serration coupling method. The handle 14 is attached.

In addition, the pressing member 10 is formed with a guide piece 11 protruding inwardly facing the inner side of the main body, and to any one of the guide piece 11 to securely fix the arm 12 In order to install the fixing pin (15). Reference numeral 13 denotes a coupling hole formed in one side of the arm 12 and engaged with the fixing pin 15.

The upper end of the inner pot 20 is integrally formed with a protrusion (22) protruding in a cut shape at a predetermined interval toward the outer direction to correspond to the locking step (16).

2 and 3, a lid body 50 formed of a synthetic resin having a beautiful color is attached to an upper portion of the pressing member 10, and the inner pot 20 is heated under the inner pot 20. An electric heating means (not shown) is installed in the electric thermal pressure cooker body 40.

In the case of cooking, in order to maintain the internal pressure rise of the inner pot 20 by the heating means, the engaging jaw 16 of the pressing member 10 and the protrusion pieces 22 of the inner pot 20 are closely coupled to each other. In FIG. 1, reference numeral 19 denotes a concave groove formed at a predetermined distance from the locking step 16, and 24 is a concave groove formed at a predetermined distance from the protrusion 22.

4 is a cross-sectional bottom view of the main portion for explaining the lid fastening structure of the holder-lock lid fastening device of the conventional pressure cooker. Any position on the locus line which is drawn when the knob 14 is rotated to fasten the pressing member 10 to the lower side of the lid body 50, more specifically, to one side of the lower surface of the pressing member 10. The stopper 17 which limits the rotation range of the said crimping member is attached to this. Reference numeral 14a in FIG. 4 represents the center of the handle 14.

Next, operation | movement of the holder lock-type lid fastening apparatus of the conventional pressure cooker by the said structure is demonstrated. First, a description will be given from the state in which the lid 50 is closed in the state of FIG.

After the food is mixed with the appropriate amount of water in the inner pot 20, the lid body 50 is compressed to the main body 40 to maintain the internal pressure of the pressure cooker.

That is, when the lid body 50 is pressed down in the direction of the arrow in FIG. 2 to perform the first closing operation, the locking jaw 16 is engaged in the concave groove 24 formed on the inner pot 20 and, conversely, the protrusion piece ( 22 is inserted into the recess 19.

In this state, when the knob 14 attached to the upper end of the lid 50 is turned, the arm 14 coupled to the knob 14 in a serration manner and installed on the crimping member 10 rotates.

The arm 12 is assembled so as to be movable with the fixing pin 15 by the coupling hole 13 and the fixing pin 15 is fixed to the crimping member 10, so that the fixing pin 15 The pressing member 10 is partially rotated in one direction.

At this time, when the entire pressing member 10 is slightly moved in one direction by the rotation of the handle 14, the moment when the locking jaw 16 and the projection piece 22 are brought into contact with each other while maintaining pressure (the stopper (the At the moment when one side of the arm 12 abuts 17), rotation of the handle 14 is prevented and the pressing member 10 and the inner pot 20 are completely coupled.

Due to the combination of both, the inner pot 20 is completely sealed by the inner lid 30.

On the other hand, if you want to open the lid 50, contrary to the description of the closing operation, when turning the handle 14 in the reverse direction, the locking jaw 16 is the position of the concave groove portion 24 of the protrusion 22 When the locking jaw 16 is set to the correct opening position by the stopper 17 and the locking jaw 16 is freely lifted up by the handle of the lid body 50, which is not shown. The lid body 50 opens naturally from 40.

As described above, the conventional thermal insulation pressure cooker is configured to transmit the rotational force of the handle 14 to the fixing pin 15 via the arm 12 to manipulate the pressing member 10, The circular edge is provided with a plurality of engaging jaw 16 is configured to act as a holder along with the protrusion piece (22).

The pressing member 10 partially rotated in accordance with the rotation of the handle 14 is configured to withstand the increased internal pressure during cooking by assembling the inner lid 30 on the upper end surface of the inner pot 30.

In addition, the sliding range of the pressing member 10 is limited by the stopper 17 formed on the lower inner surface of the lid 50 when the forward and backward sliding rotation of the pressing member 10 is limited.

By the way, in the lid fastening device of the conventional electric thermal pressure cooker configured as described above, while the pressing member 10 is sliding, between the engaging jaw 16 of the pressing member 10 and the protrusion 22 of the inner pot 20. This friction occurs every time the rice cooker is used, and if it continues for a long time, damage or deterioration of the material occurs due to fatigue phenomenon, which develops into a gap, thereby increasing safety of the inner pressure of the inner pot 20. It might cause an accident.

In addition, after the cooking is completed, when the user rotates the handle 14 to open the lid, the friction force between the engaging jaw 16 and the protrusion 22 is increased in internal pressure or the contact area is large, so the friction is large. In accordance with the present invention, a lot of power is required to open the lid, which is very cumbersome and inconvenient for the elderly, and the stopper is controlled in the manufacturing and assembly process because the allowable range of the sliding rotation operation of the crimping member 10 is regulated using a stopper. Since it is difficult to accurately set the location of the, there are problems such as frequent after-sales service due to unit price increase and malfunction.

In addition, the holder lock-type lid fastening device of the conventional pressure cooker having the above-described configuration, when the position of the stopper formed on the lower inner surface of the lid body in order to limit the sliding range of the pressing member is displaced during the assembly or processing of the product is the pressing member There is a problem that it is difficult for the user to seal or open the lid of the cooker because it does not go to the correct position.

Accordingly, the present invention has been made to solve the above problems, by improving the pressing member repeating frequent contact and separation by the compression method to smoothly sliding and the user to open the lid even with a small force An object of the present invention is to provide a holder-lock lid fastening device for a rice cooker.

1 is an exploded perspective view showing a lid fastening portion of the lid fastening device of the conventional pressure cooker

Figure 2 is a cross-sectional view showing a lid closed state of the lid fastener of a conventional pressure cooker

3 is a cross-sectional view showing a lid open state of the lid fastening device of the conventional pressure cooker

Figure 4 is a bottom cross-sectional view cut main portion for explaining the lid fastening structure of the lid fastening device of a conventional pressure cooker

Figure 5 is an exploded perspective view showing the main portion of the holder-lock lid fastening device of the pressure cooker according to the first embodiment of the present invention

6 is a plan view showing the main portion of the holder-lock lid fastening device of the pressure cooker according to the first embodiment of the present invention

7 is a cross-sectional view showing a fastening state of the holder-lock lid fastening device of the pressure cooker according to the first embodiment of the present invention

8 is a plan view showing the main portion of the holder-lock lid fastening device of the pressure cooker according to a second embodiment of the present invention

Figure 9 is an explanatory diagram for explaining the operation concept of the holder-lock lid fastening device of the pressure cooker of the present invention

Explanation of symbols on the main parts of the drawings

10: pressing member 11: guide piece

12: arm 14a: center of the handle

14: handle 15: fixing pin

16: jam jaw 17: stopper

19,24: concave groove 20: inner pot

22: stone piece 26: inner pot flange

30: inner lid 34: inner lid flange

36: guide 38: rotating member guide

40: pressure cooker body 50: lid body

62: cancer 63: longevity

70: rotating member 72: lock stone piece

74: unlocking stone piece 80: holder

82: long hole 83: protrusion

84: locking piece 85: locking groove

86: recess 87: head

90: motor 92: motor shaft

94: connecting rod 96: position detection sensor

a: Rotational member rotational track b: Locking stone rotational track

c: Rotational track of unlocked stone L: Linear reciprocating distance of holder

Holder lock-type lid fastening device of the pressure cooker of the present invention for achieving the above object, at least the lid body, the inner pot, and the inner lid disposed between the lid body and the inner pot, to impart rotational force to fasten the rice cooker In the holder-lock lid fastening device of the pressure cooker comprising a handle for,

Rotating member to rotate a predetermined amount by receiving the operating rotational force of the handle,

It is provided with a plurality of holders arranged at equal intervals on the inner lid to make a straight reciprocating movement toward the center of the cooker by the rotation of the rotating member,

According to the locking / unlocking operation of the holder, the inner lid and the flange of the inner pot are pressed together, and at the same time, the pressing and fastening state is characterized in that it is released.

By such a configuration, as the rotation of the rotating member changes the holder into a linear reciprocating motion, the crimping member is conventionally rotated by a certain amount, so that the locking jaw and the stone piece are coupled to each other to fasten the lid, the inner lid, and the inner pot. Directional sliding crimping method ”can eliminate the pressure loss or processing difficulty caused by fatigue or deterioration.

In such a configuration, the handle preferably forms a long hole at its end. With this configuration, the fixing pin of the rotating member can freely flow in the long hole when the handle is operated, thereby preventing deterioration of components due to frequent linear reciprocation of the holder. That is, the durability of the component is improved.

In the above configuration, the rotating member has at least four lock stone pieces and unlocked stone pieces which are protruded at equal intervals in the inner and outer directions, respectively, on the inside / outside, and these parts have a semicircular cross section or a triangle having a round portion, or It is preferable to form a trapezoid.

When the rotating member is configured to have the locking stone piece and the unlocking stone piece, the locking stone piece and the unlocking stone piece make the holder linearly reciprocate when the rotating member rotates, so that the lid body, inner pot, and inner lid are pressed and fastened. do.

Therefore, by adopting the so-called "holder lock rotation crimping method", which deviates from the conventional rotary sliding method, it has the effect of collectively eliminating the deterioration phenomenon of the lid or the inner lid which frequently contacts and separates each time cooking.

In addition, the shape of the lock stone piece and the unlocked stone piece can be modified in various ways, and can be variously adapted according to the specifications and preferences of the pressure cooker, thereby lowering the manufacturing cost and constructing various models.

In the above configuration, the holder is preferably set to at least four holders, one side of the holder is drilled through the long hole, the long edge of the long hole is formed as a protrusion protruding upwards, the other side of the holder is bent by the letter 'c' It is preferably a locking piece, a locking groove, and a head, and between the long hole and the head, the lock piece and the unlocking piece are preferably recessed in order to receive the lock / unlock operation.

When configured in this way, the holder is able to perform a linear reciprocating motion under the rotational force of the rotating member, it is possible to simply lock / unlock the lid body, inner pot and inner lid.

In the above configuration, the inner lid is formed toward the center of the inner lid by the number corresponding to the number of the plurality of holders at the same time to fit the long hole of the holder to accurately guide the sliding movement of the holder It is desirable to have more guides.

With this configuration, as the guide is inserted into the long hole, the holder is guided by the guide when performing a straight reciprocating motion, so that the correct movement can be performed at the right position without biasing from side to side. There is an effect that can prevent the misoperation of.

In addition, the inner lid may correspond to the outer edge arc shape of the rotating member, and at the same time it is preferable to further form a rotating member guide having a certain length.

With this configuration, since the rotating member guide contacts the outer end of the rotating member and guides it in the right position when the rotating member is rotated by the handle, the rotating member is precisely moved in the right position without biasing from side to side. It is possible to prevent the malfunction of the fastening and release of the cooker lid is effective.

In the above configuration, it is preferable that at least two rotation member guides are formed. This saves material as much as possible without limiting the function of the component itself.

In addition, Figure 8 shows another embodiment of the present invention, the holder-lock lid fastening device of the pressure cooker of the present invention,

In the holder lock-type lid fastening device of the pressure cooker comprising at least the lid body, the inner pot, and the inner lid disposed between the lid body and the inner pot,

A motor as a driving means installed in the center of the rice cooker,

A connecting rod connected to the motor shaft of the motor to transmit rotational force,

A rotating member connected to the connecting rod through a fixing pin and rotating by a predetermined amount under the rotational force of the motor;

It is provided with a plurality of holders arranged at equal intervals on the inner lid to make a straight reciprocating movement toward the center of the cooker by the rotation of the rotating member,

According to the locking / unlocking operation of the holder, the inner lid and the flange of the inner pot are pressed together, and at the same time, the pressing and fastening state is characterized in that it is released.

With such a configuration, it is possible to automatically open / close the lid by automatically locking / unlocking the holder by detecting the position of the rotating member rather than manipulating the handle artificially. Therefore, to provide a breakthrough automatic fastening device in the pressure cooker.

In the above configuration, the motor is controlled on / off by a predetermined detection signal, and it is preferable that a position detection sensor is further attached to detect the detection signal, and the motor is a one-way motor.

This automatically detects the position of the rotating member and detects the locked / unlocked state of the holder to automatically turn on / off the motor, so that all operations are performed automatically and greatly reduce the purchase cost of the motor. The cost can be reduced.

In the above configuration, it is preferable that the position detection sensor outputs a detection signal by contact / non-contact with a plurality of unlocking protrusion pieces formed on the inner circumferential surface of the rotating member.

In this case, since the sensor is provided inside the rotating member, it is possible to reduce the overall volume of the pressure cooker.

Therefore, the holder lock-type lid fastening device of the pressure cooker of the present invention, by changing the rotational movement of the rotating member to a linear reciprocating movement of the holder to seal the inner pot and the inner lid, the user tightens the lid with a small force and release It is possible to eliminate the degradation of the airtight material because it is not a sliding crimping method.

In addition, since it is not a fastening method formed by forming a locking jaw on the lid and forming a recess and a stone piece on the inner pot flange, it does not require rotating precision processing on the inner pot and the pressing member, thereby lowering the manufacturing cost. Locking and unlocking operations are performed only by the operation of rotating the handle, thereby preventing erroneous operation and eliminating the need for a stopper for limiting the sliding range of the crimping member, thereby reducing the number of parts.

In addition, it is possible to automatically open and close the lid by the addition of a drive means provides an automatic lid fastening device proposed for the first time in an article called a rice cooker.

Hereinafter, the holder lock type lid fastening device of the pressure cooker of the present invention will be described in more detail with reference to FIGS. 5 to 8.

In the description of the present invention, those having the same functions shown in the conventional description and all the drawings have the same reference numerals, and repetitive description thereof will be omitted.

5 is an exploded perspective view showing the main portion of the holder-lock lid fastening device of the pressure cooker according to the first embodiment of the present invention, Figure 6 is a holder lock-type lid fastening device of the pressure cooker according to the first embodiment of the present invention 7 is a cross-sectional view showing a fastening state of a holder-lock lid fastening device of the pressure cooker according to the first embodiment of the present invention.

The biggest feature of the present invention is that at least four holders arranged at equal intervals with respect to the inner lid are not used at all, without using the `` sliding compression fastening method '' of the locking jaw and the stone pieces used in almost all pressure cookers. It is a so-called "holder lock method" that repeats locking and unlocking by performing a linear reciprocating motion toward the.

In the holder-lock lid fastening device of the pressure cooker of the present invention, reference numeral 14 in Fig. 6 denotes a handle as in the prior art. An arm 62 is attached to the lower portion of the handle 14, and the arm 62 forms a 'b' shape and forms a long hole 63 at an end thereof.

In the present invention, the member serving as the crimping member 10 having the latching jaw 16 conventionally is a rotating member 70 denoted by 70. The rotating member 70 is circular and has a size corresponding to the size of the inner lid 30 and integrally formed with the lock stone piece 72 and the unlock stone piece 74 protruding inward and outward on the inside / outside thereof. Doing. In the embodiment of the present invention, the shape of the locking stone piece 72 and the unlocking stone piece 74 is set such that the cross section constitutes a semicircle, but it does not necessarily correspond to such a shape, and the cross section has a rounded or triangular round shape. You may have a trapezoidal shape which has a part.

A fixing pin 15 is attached to one side of the rotating member 70, and the rotating pin 70 and the handle 14 are connected to each other by combining the fixing pin 15 and the long hole 63. By the rotational force of the rotation member 70 is configured to enable a rotational movement within a limited range preset in the right direction or the left direction.

Next, the improved inner lid 30 and a novel component 80 structure will be described. 5 and 6, at least four holders 80 are disposed between the rotating member 70 and the inner lid 30. The holder 80 is formed of a locking piece 84 and the locking groove 85 is formed with a long hole 82 on one side and bent in the letter 'C' on the other side.

The locking piece 84 and the locking groove 85 serves to seal the inner pot 20 by biting the inner lid 30 and the inner pot 20.

In addition, the upper surface of the holder 80 is a projection piece 83 protruding along the periphery of the long hole 82, and the upper surface of the locking piece 84 and the locking groove 85 at the time of unlocking (unlocking) A head portion 87 for pushing the holder 80 is provided, and between the head portion and the protruding piece 83, the lock stone piece 72 and the unlocking stone piece 74 are received and locked / unlocked. The recessed portion 86 is recessed for operation.

The inner lid 30 of the present invention has a very unusual shape compared to the conventional inner lid. The inner cover 30 is fitted with the long hole 86 of the holder 80, the guide 36 for guiding the sliding movement of the holder 80 accurately toward the center direction of the inner cover 30 Rotating member guide 38 having a predetermined length corresponding to the number of two holders 80 and corresponding to the outer edge arc shape of the rotating member 70 more precisely near the guide 36. ) Is formed.

The rotating member guide 38 is formed to be the same as the radius of curvature of the outer peripheral surface of the rotating member 70, it is preferable that at least two are installed.

Next, operation | movement of the holder lock-type lid fastening apparatus of the pressure cooker of this invention by the said structure is demonstrated.

First, the operation concept of the present invention will be described with reference to FIG. 9. 9 is an explanatory diagram for explaining the operation concept of the holder-lock lid fastening device of the pressure cooker of the present invention. In this figure, a is a rotational trajectory drawn when the rotating member 70 rotates, b is a trajectory drawn by the lock stone piece 72 of the rotating member 70, and c is a locus of the unlocking stone piece 74. This is the trajectory you draw when you rotate.

Therefore, when the lock stone piece 72 and the unlocked rock piece 74 rotate, the linear reciprocating movement distance of the holder 80 as it moves in contact with the lock stone piece 72 and the unlocked rock piece 74 is indicated by the symbol 'L'. Is the amount indicated by '.

The state of FIG. 6 shows a release state, ie, an unlocking state, in which the holder 80 is separated from the inner pot 20 and the inner lid 30. That is, the locking piece 84 and the locking groove 85 of the holder 80 is in a state protruding from the inner circumference of the inner lid 30 away from the inner pot 20 and the inner lid 30 to a predetermined length. .

In this state, when the handle 14 is turned in one direction, the arm 62 rotates the rotating member 70 slightly in one direction.

Since the locking member 72 is formed inside the rotating member 70, the locking member 72 comes into contact with the protruding member 83 of the holder 80 according to the rotation of the rotating member 70. The protruding piece 83 is pushed inward by the lock stone piece 72. That is, the protruding piece 83 is linearly moved inwardly, and the flange 26 and the inner lid 30 of the inner pot 20 are formed by the locking piece 84 and the locking groove 85 due to the linear movement. The flange 34 is in close contact as shown in FIG.

Rotating movement of the handle 14 is to change the holder 80 to a linear reciprocating motion by the action of the rock stone piece 72 and the projection piece 83 to compress the inner pot 20 and the inner lid 30 by pressing Will be.

At this time, in order to ensure the arc-shaped rotation (forward rotation) of the holder 80, since the rotary member guide 38 is formed at any position of the inner lid 30, this guide line Accordingly, the rotation member 70 rotates smoothly without leaving the home position.

On the other hand, when the cooking is finished in the fastened state, the electric energy supply of the heating unit is cut off under the control of the electric control means (not shown) and the cooker is switched to the warm state, in which the user must open the cooker to take out the rice.

At this time, the handle 14 is operated as opposed to the previous fastening state. That is, when the knob 14 is turned in the other direction, the rotating member 70 rotates a predetermined amount in the opposite direction to the previous one, and at this time, the lock stone piece 72 is pressed and contacted with the holder 80. The lock piece 74 is brought into contact with the inside of the head 87 while moving away from the protruding piece 83 to the concave portion 86. In this state, the rotating member 70 continues to rotate, and the holder 80 is a rice cooker, more precisely, when the linear movement toward the outward direction of the main body 40, the inner pot 20 and the inner lid 30 [inner lid The flange (34) and the inner pot flange (26) of the holder 80 of the holder 80, which was held by the engaging groove (85) is released from their flanges (26, 34), the holder ( 80 release their restraint.

Therefore, the lid body 50 can be smoothly lifted upward as it is not subject to any restraint. At this time, only the force of lifting the lid itself is needed to open the lid, thereby making a very convenient opening operation.

Eventually, the present invention, when the lock stone piece 72 of the rotating member 70 is engaged with the holder 80 during the operation of the handle 14, the holder 80 is moved inward to the cooker body 400 and the lid body 50 When the handle 14 is rotated in the opposite direction as before, the unlocking rock piece 74 of the rotating member 70 is pushed out to open the lid 50 smoothly. It will be possible.

8 is a plan view showing the main portion of the holder-lock lid fastening device of the pressure cooker according to a second embodiment of the present invention.

In this second embodiment, the lid body 50 is fastened and opened automatically. That is, the motor 90 is used as the automatic driving means instead of the handle 14 used in the first embodiment.

In the second embodiment of the present invention, a small motor 90 is installed in the center of the rice cooker. The motor shaft 92 of the motor 90 is connected to the fixing pin 15 of the rotating member 70 by a connecting rod 94 as the power transfer member to electrically rotate the rotating member 70. Doing.

The operation of the motor 90 is controlled on / off by the position detection sensor 96. The sensor 96 is provided in the vicinity thereof so as to detect the position of the unlocking protrusion piece 74 formed on the inner circumferential surface of the rotating member 70.

The position detection sensor 96 transmits a detection signal to a motor control circuit (not shown) to control the on / off operation of the motor 90 to enable fastening and releasing of the lid 50 (locking / unlocking operation). .

Thus, the present invention, when the user rotates the handle only by the operation of the rotating member is sliding and opening and closing the lid when the locking stone piece and the unlocking stone piece having a semi-circular cross section of the rotating member comes to feel smoothly fit into the recess of the holder It is very convenient that locking operation and unlocking operation are performed by stopping

As described above, according to the holder-lock lid fastening device of the pressure cooker according to the present invention, by changing the rotational movement of the rotating member to a linear reciprocating movement of the holder to seal the inner pot and the inner lid, even if the user with a small force It is possible to fasten and release, and it is not a sliding method to exclude the deterioration of the sealing material, and because it is not a fastening method that is formed by forming a locking jaw on the lid and forming a recess and a stone piece on the inner pot flange, the inner pot The manufacturing cost can be lowered because no rotating precision processing is required on the overpressing member, and locking and unlocking operations are performed only by the user rotating the handle, thereby preventing misoperation and limiting the sliding range of the pressing member. No stopper is required to make the part, which reduces the number of parts and lowers the material cost.

In addition, in the present invention, it is possible to use a low-cost one-way motor to achieve automation at a low cost, and also preferred embodiments of the present invention are disclosed for the purpose of illustration, those skilled in the art various modifications within the spirit and scope of the present invention, Changes, additions, and the like will be possible, and such modifications and changes should be regarded as falling within the following utility model registration claims.

Claims (8)

In at least a lid body, the inner pot, the inner lid disposed between the lid and the inner pot, and a handle lock holder lid of the pressure cooker comprising a handle for imparting a rotational force to fasten the rice cooker, Rotating member to rotate a predetermined amount by receiving the operating rotational force of the handle, It is provided with a plurality of holders arranged at equal intervals on the inner lid to make a straight reciprocating movement toward the center of the cooker by the rotation of the rotating member, And locking the inner lid and the inner pot flange according to the locking / unlocking operation of the holder, and at the same time, releasing the pressing fastening state. 2. The holder lock type cap fastening device of claim 1, wherein the rotating member has at least four lock stone pieces and unlock lock pieces which protrude at equal intervals in the inner and outer directions, respectively, on the inside / outside. The holder of claim 1, wherein at least four holders are disposed, one side of the holder having a long hole, the long edge of which is formed by a protrusion projecting upwardly, and the other side of the holder is bent by a letter 'c'. Holder of the pressure cooker, characterized in that the locking piece, the locking groove and the head portion between the long hole and the head portion is a concave recess to receive the lock stone piece and the unlocked stone piece to perform the lock / unlock operation. Lock lid closure. The method of claim 1, wherein the inner lid is formed toward the center of the inner lid by the number corresponding to the number of the plurality of holders at the same time to fit the long hole of the holder to accurately slide the holder movement Holder lock-type cap fastening device of the pressure cooker, characterized in that it further has a guide for guiding. The lock mechanism of claim 1, wherein the inner lid further includes a rotating member guide having a predetermined length and corresponding to the outer edge arc shape of the rotating member. In the holder lock-type lid fastening device of the pressure cooker comprising at least the lid body, the inner pot, and the inner lid disposed between the lid body and the inner pot, A motor as a driving means installed in the center of the rice cooker, A connecting rod connected to the motor shaft of the motor to transmit rotational force, A rotating member connected to the connecting rod through a fixing pin and rotating by a predetermined amount under the rotational force of the motor; It is provided with a plurality of holders arranged at equal intervals on the inner lid to make a straight reciprocating movement toward the center of the cooker by the rotation of the rotating member, And locking the inner lid and the inner pot flange according to the locking / unlocking operation of the holder, and at the same time, releasing the pressing fastening state. 7. The holder lock type cap fastening device of a pressure cooker according to claim 6, wherein the motor is controlled on / off by a predetermined detection signal, and a position detection sensor is further attached to detect the detection signal. 8. The cap fastening device of an electric thermal pressure cooker according to claim 7, wherein the position detection sensor outputs a detection signal by contact / non-contact with a plurality of unlocking protrusion pieces formed on an inner circumferential surface of the rotating member.