JPS63189Y2 - - Google Patents

Description

[Detailed explanation of the idea] This invention relates to a pressure cooker.

In a pressure cooker, the internal pressure increases, so in addition to the structure of the lid, the engagement between the arm on the lid side and the stopper on the pot body is also important.

This idea was developed with an eye to this importance, and basically consists of providing an integrated reinforcing side wall on the fastener, and also providing a height-adjustable plate between the sleeve and the arm. Then, a technical means is used in which the step part of the large diameter thick part of the sleeve is brought into surface contact with this plate, and flanges extending in directions facing each other are formed at the lower part of the arm. The installation of the reinforced side wall not only reinforces the stop metal fittings, but also prevents the lid from slipping too much when the lid with an arm is slid onto the pot body from the side, and allows the lid to be placed correctly in relation to the pot body. , and the use of height-adjustable plates
To enable the use of the same handle and sleeve regardless of the capacity of a pot body, and to adjust the engagement position between both ends of an arm and a stopper. Furthermore, surface contact between the plate and the stepped portion of the large diameter thick portion of the sleeve avoids direct contact between the arm and the stepped portion, thereby preventing damage to the stepped portion. That is, in general, the top wall of the arm is a gentle arc and the sleeve is made of brass or the like, so the direct contact between the step part of the large diameter thick part of the sleeve and the arm is a line contact, Although the edge of the stepped portion was deformed, the present invention does not have this problem. Furthermore, the flange provided on the arm has a larger longitudinal dimension than the reinforcing plate of the lid, thus reducing the bending of the arm due to internal pressure during use and preventing lifting of the lid.

An embodiment of this invention will be described with reference to the accompanying drawings.

The outer peripheral edge of the lid 1 is provided with a groove 2 that bulges upward and opens downward. To prevent deformation of the lid 1. An elastically deformable packing 4 is disposed within the groove 2. Patsukin 4
is adapted to receive pressure within the pot body 3 during use. A circular reinforcing plate 5 is fixed to the center of the lid 1 to increase the strength of the center. A male-threaded rod 6 extends upwardly through the lid 1 and reinforcing plate 5 and is fixed to both. The reinforcing plate 5 is provided with a guide 7 extending upward. Further, a safety valve 8 is attached to the lid 1 so that the internal pressure is released to the outside when the internal pressure exceeds a predetermined value. A sleeve 10 having a large diameter thick portion 21 at the bottom and having a female thread is embedded in the handle 9, and the sleeve 10 and the rod 6 are connected to each other.
and can be screwed together. A screw 11 is screwed into the upper end of the sleeve 10 from the upper part of the handle 9. An arm 12 is attached between a stepped portion of the thick wall portion of the sleeve 10 and the handle via a height-adjustable plate 22. The arm 12 has a substantially inverted U-shape in cross section and has an opening 13 facing downward. The arm 12 has flanges 24 extending in opposite directions at the lower portions of the opposite side walls. The longitudinal dimension of this flange 24 is made larger than that of the reinforcing plate 5. The flange 24 reinforces the arm 12 against the force acting on the arm 12 through the lid 1 when the internal pressure of the pot body 3 becomes high, thereby reducing bending of the arm. Further, the plate 22 is in surface contact with the stepped portion of the thick portion 21, and the plate 22 is in surface contact with the stepped portion of the thick portion 21.
Contact the top wall of 2. For this reason, plate 22
If it is made of a high-strength material, the top wall of the arm 12 is made into an arc shape, and even if the plate 22 and the top wall of the arm are brought into edge contact, the stepped portion of the large diameter thick portion 21 of the sleeve 10 will not be damaged. There isn't.

A pair of fasteners 14 extend upwardly on the pot body 3. The fastener has reinforcing side walls 23 that can come into contact with the side walls at both ends of the arm 12. When using, cover 1
Attach the peripheral edge of the pot body 3 to the opening periphery of the pan body 3.
Seating via. At this time, the opening periphery of the pot body 3 contacts only the packing 4 without contacting the inner wall of the groove 2, and the gap between the inner wall of the opening periphery of the pot body 3 and the lid 1, and between the inner wall of the groove 2 and the opening. Gaps 15 and 16 are left between the peripheral outer wall and the outer wall. After placing both ends of the arm 12 in a position where they can be engaged with the stopper 14, the handle 9 is rotated and the arm 12
is raised and both ends of the arm 12 are brought into pressure contact with the stopper 14, and the reaction force causes the lid 1 to be brought into close contact with the periphery of the opening of the pot body 3 via the gasket 4. Since the gasket 4 is exposed to internal pressure, it is deformable in response to the high internal pressure. Therefore, if the safety valve 8 does not work and the internal pressure rises abnormally, the gasket 4 deforms and communicates the gaps 15 and 16 to release the pressure to the outside. At this time, the center part of the lid can sufficiently withstand the internal pressure due to the reinforcing plate 5 and will not be deformed.

In the illustrated example, the pot body 3 includes an inner pot 17 and an outer pot 18.
and an outer frame 19, a heat insulating material 20 is used, and an electric heater 21 is used as a heat source. The outer pot 18 has a thick wall at its upper part and is constricted inward in the radial direction, so it has high strength and is less likely to deform.

[Brief explanation of the drawing]

The figure is a cross-sectional view of a pressure cooker as an example of this invention. In the diagram: 1...lid, 2...groove, 3...pot body,
4...Putskin, 5...Reinforcement plate, 6...Rotsudo,
7...Guide, 8...Safety valve, 9...Handle,
10... Sleeve, 12... Arm, 14... Stopper, 15, 16... Gap, 21... Thick part,
22... Height adjustment plate, 23... Reinforcement side wall.

Claims (1)

[Scope of utility model registration request] A reinforcing plate is fixed to the center part of the lid, and a rod extending from the inside to the outside of the lid is fixed to the center part, and both ends of the rod can be engaged with the stopper of the pot body and have a substantially inverted U-shaped cross section. A pressure cooker in which a sleeve is embedded in a handle that supports an arm, and the sleeve and the rod can be screwed together, wherein the stopper of the pot body has a reinforced side wall that can come into contact with a side end of the arm, A plate is disposed between the large-diameter thick part provided on the sleeve and the arm, and the arm has a flange extending from a lower part of the opposite side wall in a direction facing each other, and a longitudinal direction of the flange is A pressure cooker characterized in that the width is larger than the reinforcing plate, the diameter of the plate is larger than the diameter of the large diameter thick part of the sleeve, and the step part and the plate are in surface contact. .