JP4133948B2 - Heating vessel pressure regulator - Google Patents

Description

  The present invention relates to a pressure adjusting device for a heating container, such as a pressure adjusting device installed in a lid of a pressure rice cooker.

  As a pressure adjusting device for this kind of heating container, a pressure valve and a solenoid are arranged in the lid, a plunger insertion port is formed in the valve chamber, and the insertion port is formed in the valve chamber. There is a type for a pressure rice cooker in which an engagement recess to be press-fitted into the mouth edge is closed with a packing formed on the outer periphery of the ring portion, and the plunger operates the valve body of the pressure valve via this packing (patent) Reference 1).

JP 2000-93294 A (see FIG. 2)

  However, although rare, some users may push the packing strongly outward with their fingers because they are trying to carefully clean the grocery that has adhered to the valve chamber. At this time, the device described in Patent Document 1 has a problem that the ring portion of the packing is deformed and disengages from the mouth edge, and the airtightness is broken to cause malfunction of the apparatus.

  Accordingly, an object of the present invention is to install a pressure valve in the lid body, form an insertion port of a moving member to be inserted into the valve chamber from the outside of the pressure valve in the valve chamber, and press-fit into a rim of the insertion port. In the pressure adjusting device of the heating container in which the insertion member is closed with a packing provided with an engagement recess on the outer peripheral surface of the ring portion, and the moving member operates the valve body through the packing, the packing is held with a finger during cleaning. An object of the present invention is to provide a pressure adjusting device for a heating container in which the packing does not come off even when pressed strongly to the outside.

  In order to solve the above-described problem, the present invention is configured such that a pressure valve is installed in the lid, an insertion port of a moving member that is inserted into the valve chamber from the outside of the pressure valve is formed in the valve chamber, and the insertion port is In the pressure adjusting device for a heating container in which the engagement concave portion to be press-fitted into the mouth edge is closed with a packing formed on the outer peripheral surface of the ring portion, and the moving member operates the valve body via the packing, the ring portion is It was set as the structure provided with the retaining member pressed toward the said edge from the outer side of a valve chamber.

  According to the above configuration, even when the packing is pressed from the inside of the valve chamber during cleaning, the retaining member presses the ring portion from the outside of the valve chamber toward the mouth edge. It is possible to prevent the ring portion from dropping out of the mouth edge.

  Specifically, the retaining member can be configured to press the inner peripheral surface of the ring portion and the outer surface of the ring portion. According to this configuration, the ring portion is pressed from the outer side and the inner peripheral surface toward the mouth edge, so that the ring portion is more reliably prevented from falling off.

  Moreover, in the said structure, the said retaining member can also be comprised from the 1st member which presses the outer surface of the said ring part, and the 2nd member which presses the inner peripheral surface of the said ring part. Also according to this configuration, the ring portion is pressed from the outer side and the inner peripheral surface side toward the mouth edge.

  Moreover, in the said structure, when pressing the inner peripheral surface of the said ring part with the said retaining member, the annular wall part which presses the inner peripheral surface of the said ring part is provided in the said retaining member made from metal, This annular wall If the reinforcing part that overlaps with the inner peripheral surface of the annular wall part is provided by folding back outward at the inner end of the part, the bending rigidity in the pressing direction of the retaining member is increased, so that the packing is pressed. In this case, the retaining member is not easily deformed, and the ring portion is more reliably prevented from falling off.

  Moreover, in the said structure, if it is set as the structure which provided the rib which raises the bending rigidity of a pressing direction in the said retaining member, when the said packing is pressed, a deformation | transformation of the said retaining member will be prevented.

  Further, in the above configuration, if the retaining member is positioned at the uneven portion formed on the lid and screwed to the lid, the retaining member is firmly fixed to the lid. As a result, the retaining member is prevented from being displaced and the packing from falling off.

  Further, in the above configuration, if the bulging portion having the outer peripheral surface is provided on the inner surface of the lid body, and the attachment member that is fitted to the outer peripheral surface of the bulging portion is provided on the retaining member, the packing is pressed. When this is done, the mounting portion is restricted by the outer peripheral surface of the bulging portion, and the retaining member is prevented from shifting, so that the retaining member can be fixed without using a screw.

  As described above, according to the present invention, the pressure valve is installed in the lid body, the insertion port of the moving member that is inserted into the valve chamber from the outside of the pressure valve is formed in the valve chamber, and the rim of the insertion port is formed. In the pressure adjusting device of the heating container in which the moving member operates the valve body through the packing, the insertion recess is closed with a packing provided with an engaging recess to be press-fitted into the outer peripheral surface of the ring portion. It is possible to provide a pressure adjusting device for a heating container in which the packing does not come off even when the packing is strongly pressed outward.

  Hereinafter, a pressure adjusting device for a heating container according to a first embodiment of the present invention will be described with reference to the drawings. 1 and FIG. 2 shows a pressure adjustment device for a heating container, in which a pressure valve 2 is installed in a lid 1 of a pressure rice cooker, and is inserted into the valve chamber 3 from the outside of the pressure valve 2. An insertion port 5 of the moving member 4 is formed in the valve chamber 3, and the insertion port 5 is closed with a packing 9 formed on the outer peripheral surface of the ring portion 8 with an engagement recess 7 that is press-fitted into the port edge 6. The movable member 4 is configured so as to operate the valve body 10 via the valve member 10, and includes a retaining member 11 that presses the engaging recess 7 toward the mouth edge 6 from the outside of the valve chamber 3.

  As shown in FIG. 3, the lid body 1 has a structure in which a resin upper lid member 12 and a lower lid member 13 are vertically fitted, and a space between the upper lid member 12 and the lower lid member 13 A solenoid 14 and a pressure sensor 15 are installed. In order to reduce the number of screwing points, the solenoid 14 and the pressure sensor 15 are formed with receiving portions 17 corresponding to the tapered protrusions 16 formed on the lower surface of the upper lid member 12. In a state where the upper lid member 12 and the lower lid member 13 are fitted, the protrusion 16 is stuck in the receiving portion 17, and the solenoid 14 and the pressure sensor 15 are pressed against the upper surface of the lower lid member 13.

  As shown in FIGS. 1 and 2, the pressure valve 2 is attached to an opening 18 a of an inner lid 18 that is detachably attached to the lower surface of the lid 1. Specifically, the pressure valve 2 includes a valve seat member 19 attached to the opening 18a of the inner lid 18, a valve body 10 that closes the valve hole 19a of the valve seat member 19 by its own weight, and a valve seat member 19 The ring packing 20 that restricts the valve body 10 at the upper outer periphery of the valve chamber 3 and the valve chamber 3 are configured.

  The valve chamber 3 includes a valve chamber member 21 that covers the valve seat member 19 so as to cover the valve seat member 19 and the valve body 10, and a valve chamber cover portion 22 that covers the valve chamber member 21 with a gap. Yes. The valve chamber cover portion 22 is formed by expanding the upper surface of the lower lid member 13 in a generally dome shape.

  In the valve chamber 3, an insertion port 5 is formed by opening a communication port facing the solenoid 14 in the valve chamber member 21 and the valve chamber cover portion 22. The insertion port 5 is formed in a circular hole shape on the valve chamber cover part 22 side, and is closed with a packing 9. The moving member 4 composed of a plunger of a solenoid 14 is inserted into the insertion port 5 through the packing 9.

  In the above configuration, when the inner lid 18 is removed from the lid body 1, the pressure valve 2 is extracted from the lid body 1 except for the valve chamber cover portion 22, and when the inner lid 18 is attached to the lid body 1, Installed. In a state where the inner lid 18 is removed from the lid body 1, the inner surface of the valve chamber cover portion 22 and the packing 9 are exposed, and the inside of the valve chamber cover portion 22 can be cleaned.

  The moving member 4 is separated from the valve body 10 in a state where the solenoid 14 is ON, and is interposed between the valve chamber member 21 and the valve chamber cover portion 22. On the other hand, in a state where the solenoid 14 is OFF, the moving member 4 advances into the valve chamber member 21 and moves the valve element 10 from above the valve hole 19a to open the valve.

  In the packing 9, an engagement recess 7 that is press-fitted into the rim 6 of the insertion port 5 is formed on the outer peripheral surface of the ring portion 8 so that the valve chamber 3 can be kept airtight. The ring portion 8 is fitted to the lip 6 with a compression allowance. On the outer peripheral surface of the ring portion 8, an engagement concave portion 7 formed of a circumferential concave groove is formed so as to be fitted to the lip 6, and on the inner end side of the ring portion 8, the insertion portion 23 of the moving member 4 is formed. Are connected.

  The ring portion 8 is pressed from the outside of the valve chamber 3 toward the mouth edge 6 by the retaining member 11. The retaining member 11 is attached to a positioning portion 24 formed on the upper surface of the lower lid member 13 between the valve chamber 3 and the solenoid 14.

  As shown in FIGS. 4 and 5, the positioning portion 24 is provided in a recessed portion that is lower than the solenoid 14 and the insertion port 5. Protrusions 25 are formed on both side wall surfaces of the recessed portion, and parallel rib portions 26 convex inward and outward are formed on the bottom surface of the recessed portion so as to face each other.

  The retaining member 11 is made of a bent metal plate, and has a flat plate portion 27 in which an opening corresponding to the insertion port 5 is formed, and a screw insertion portion that is continuously provided inward from the upper end of the flat plate portion 27. 28, a bottom plate portion 29 that is horizontally provided outward from the lower end of the flat plate portion 27, and ribs 30 that are provided on both sides of the flat plate portion 27 toward the valve chamber 3 side.

  The screw insertion portion 28 is provided so as to come into contact with the upper end surface of the cylindrical screw hole portion 31 formed on the rim 6 of the valve chamber 3 in the mounted state of the retaining member 11 (see FIG. 2). ). On the other hand, the bottom plate portion 29 is provided so that both sides contact the projection 25 and the outer side press-contacts the parallel rib portion 26 when the retaining member 11 is mounted (see FIG. 2). When the bottom plate portion 29 is positioned by the protrusion 25 and the parallel rib portion 26 and screwed to the screw hole portion 31 via the screw insertion portion 28, the mounting of the retaining member 11 is completed.

  The flat plate portion 27 is provided so as to press the outer surface 32 of the ring portion 8 in the mounted state of the retaining member 11. Here, it is preferable that the retaining member 11 is attached to the packing 9 with a compression allowance of 5% to 30% according to the overall rigidity. Thereby, even if the ring portion 8 is pushed from the inside of the valve chamber 3, the flat plate portion 27 is pushed back, so that the ring portion 8 is prevented from dropping out of the lip 6. In addition, as a material of the retaining member 11, a resin capable of obtaining sufficient rigidity can be used in addition to a metal plate such as a galvanized cold rolled original plate.

  The ribs 30 are provided so as to come into contact with both side wall surfaces of the positioning portion 24 in the mounted state of the retaining member 11. Providing the rib 30 in this way increases the bending rigidity of the retaining member 11 in the pressing direction, and prevents the retaining member 11 from being inclined with respect to the valve chamber 3.

  Of course, in the present invention, the retaining member can be formed in other forms. As an example, a pressure adjusting device for a heating container according to a second embodiment of the present invention will be described with reference to FIG. In this paragraph, only differences from the first embodiment will be described. As shown in FIG. 6, the retaining member 41 is provided with an annular wall portion 43 by bending the lip of the opening formed in the flat plate portion 42 inward to the lower side of the engaging recess 7. . The annular wall portion 43 is press-fitted into the inner peripheral surface 44 of the ring portion 8, and is formed so as to press the inner peripheral surface 44 toward the mouth edge 6 in this press-fitted state. If the outer surface 32 and the inner peripheral surface 44 of the ring portion 8 are connected with a bent surface so as to be in close contact with the retaining member 41, the pressing of the ring portion 8 by the retaining member 41 is ensured.

  As a modification of the second embodiment, a pressure adjustment device for a heating container according to a third embodiment of the present invention will be described with reference to FIG. In this paragraph, only differences from the second embodiment will be described. As shown in FIG. 7, the retaining member 51 is formed by forming an annular wall portion 53 in the flat plate portion 52 and providing a reinforcing portion 54 that overlaps the inner peripheral surface of the annular wall portion 53. The reinforcing portion 54 is formed by folding outward at the inner end of the annular wall portion 53.

  In the present invention, the retaining member can also be composed of a plurality of members. As an example, a pressure adjustment device for a heating container according to a fourth embodiment of the present invention will be described with reference to FIG. In this paragraph, only differences from the first embodiment will be described. As illustrated in FIG. 8, the retaining member 61 includes a first member 62 that presses the outer surface 32 of the ring portion 8 and a second member 63 that presses the inner peripheral surface 44 of the ring portion 8. The first member 62 is the same as the retaining member 11. The second member 63 is formed with a flange portion 64 that is in contact with the outer side surface 32 of the ring portion 8 and an annular wall portion 65 that is press-fitted into the inner peripheral surface 44 of the ring portion 8. The retaining member 61 is mounted so that the second member 63 is press-fitted into the inner peripheral surface 44 of the ring portion 8, and the second member 63 is pressed against the outer surface 32 of the ring portion 8 by the first member 62.

  Moreover, in this invention, it can also comprise so that a securing member may be fixed, without using a screw. As an example thereof, a pressure adjustment device for a heating container according to a fifth embodiment of the present invention will be described with reference to FIGS. In this paragraph, only differences from the first embodiment will be described. As shown in FIGS. 9A to 9C, the retaining member 71 includes a flat plate 72 that presses the outer surface 32 of the ring portion 8, and a bottom plate 73 that is positioned by the positioning portion 24. And an attachment portion 74 that is fitted to the outer peripheral surface of the valve chamber 3 (valve chamber cover portion 22). The mounting portion 74 is forcibly fitted to the outer peripheral surface of the valve chamber 3 so as to be coaxial with the moving shaft of the moving member 4. The retaining member 71 does not move when the packing 9 is pressed because the mounting portion 74 is regulated in the inner and outer directions by the outer peripheral surface of the valve chamber 3.

The vertical side view of the pressure adjustment apparatus of the heating container which concerns on 1st Embodiment. The expansion vertical side view same as the above. The disassembled perspective view of the cover part same as the above. The expansion perspective view same as the above. The exploded perspective view same as the above. The partial expanded vertical side view of the pressure adjustment apparatus of the heating container which concerns on 2nd Embodiment. The partial expanded vertical side view of the pressure adjustment apparatus of the heating container which concerns on 3rd Embodiment. The partial expanded vertical side view of the pressure adjustment apparatus of the heating container which concerns on 4th Embodiment. (A) The partial expansion vertical side view of the pressure adjustment apparatus of the heating container which concerns on 5th Embodiment. (B) The whole perspective view of the retaining member of Fig.9 (a). (C) Top view of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Cover body 2 Pressure valve 3 Valve chamber 4 Moving member 5 Insertion port 6 Edge 7 Engagement recessed part 8 Ring part 9 Packing 10 Valve body 11,41,51,61,71 Detachment member 12 Upper cover member 13 Lower cover member 14 Solenoid 15 Pressure sensor 16 Protruding part 17 Receiving part 18 Inner lid 18a Opening 19 Valve seat member 19a Valve hole 20 Ring packing 21 Valve chamber member 22 Valve chamber cover part 23 Insertion part 24 Positioning part 25 Protrusion part 26 Parallel rib parts 27 and 42 , 52 Flat plate portion 28 Screw insertion portion 29, 73 Bottom plate portion 30 Rib 31 Screw hole portion 32 Outer side surfaces 43, 53, 65 Annular wall portion 44 Inner peripheral surface 54 Reinforcement portion 62 First member 63 Second member 64 ridge portion 72 Standing Plate part 74 Mounting part

Claims (4)

A pressure valve is installed in the lid, an insertion port for a moving member that is inserted into the valve chamber from the outside of the pressure valve is formed in the valve chamber, and an engagement recess that is press-fitted into the rim of the insertion port is formed on the outer periphery of the ring portion. In the pressure adjusting device of the heating container in which the insertion port is closed with a packing provided on the surface, and the moving member operates the valve body through the packing, the ring portion is directed from the outside of the valve chamber toward the mouth edge. A pressure adjusting device for a heating container , comprising: a retaining member that presses and having a rib that increases the bending rigidity in the pressing direction . A pressure valve is installed in the lid, an insertion port for a moving member that is inserted into the valve chamber from the outside of the pressure valve is formed in the valve chamber, and an engagement recess that is press-fitted into the rim of the insertion port is formed on the outer periphery of the ring portion. In the pressure adjusting device of the heating container in which the insertion port is closed with a packing provided on the surface, and the moving member operates the valve body through the packing, the ring portion is directed from the outside of the valve chamber toward the mouth edge. A retaining member that presses the ring portion, and the retaining member is provided so as to press the inner peripheral surface of the ring portion and the outer surface of the ring portion. An annular wall portion that presses the inner peripheral surface of the annular wall portion is provided, and a reinforcing portion that overlaps with the inner peripheral surface of the annular wall portion is provided by folding outward at the inner end of the annular wall portion . Pressure regulator. A pressure valve is installed in the lid, an insertion port for a moving member that is inserted into the valve chamber from the outside of the pressure valve is formed in the valve chamber, and an engagement recess that is press-fitted into the rim of the insertion port is formed on the outer periphery of the ring portion. In the pressure adjusting device of the heating container in which the insertion port is closed with a packing provided on the surface, and the moving member operates the valve body through the packing, the ring portion is directed from the outside of the valve chamber toward the mouth edge. A pressure adjusting device for a heating container , comprising: a retaining member that presses and pressing , wherein the retaining member is positioned by an uneven portion formed on the lid and screwed to the lid . A pressure valve is installed in the lid, an insertion port for a moving member that is inserted into the valve chamber from the outside of the pressure valve is formed in the valve chamber, and an engagement recess that is press-fitted into the rim of the insertion port is formed on the outer periphery of the ring portion. In the pressure adjusting device of the heating container in which the insertion port is closed with a packing provided on the surface, and the moving member operates the valve body through the packing, the ring portion is directed from the outside of the valve chamber toward the mouth edge. And a pressing member provided on the inner surface of the lid, and a bulging portion having an outer peripheral surface is provided on the inner surface of the lid, and an attachment portion is provided on the holding member to be fitted to the outer peripheral surface of the bulging portion. Container pressure regulator.

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