JP3749036B2 - High pressure vessel lid device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a lid device for a high-pressure container such as a so-called high-pressure steam sterilizer.
[0002]
[Prior art]
This type of steam sterilizer was specially developed for physics and chemistry. The container was placed in a vertical position, and a basket containing a flask or the like was placed in the container from the opening provided at the top, and then the lid was closed. Is closed and the lock device prevents it from opening.
[0003]
The method of opening and closing the lid has long been pivoted in the horizontal direction by pivotally supporting a part of the outer periphery of the lid, but when opened, the lid pops out larger than the outer surface of the sterilizer body, and other items In this case, the lid cannot be fully opened and the lid may be damaged if it is opened strongly.
[0004]
For this reason, as disclosed in Japanese Patent Application Laid-Open No. 8-75002, there has been proposed one in which one side of the lid is pivotally attached to the main body so as to be freely opened and closed (turned).
[0005]
[Problems to be solved by the invention]
In the above-described prior art, a lock pin that is movable in the horizontal direction is provided outside the wall surface of the chamber, and a lock hole is provided in the outer peripheral portion of the lid. When the lid is applied, the operation ring linked to the lock pin is rotated to rotate the lock. Engage the pin with the lock hole to complete the lock.
[0006]
Further, when the cover is opened, the operation ring is rotated so that the lock pin is detached from the lock hole and the locked state is released.
[0007]
However, since the lock pin is engaged and disengaged by the movement of the lock pin as described above, the hole diameter of the lock hole is increased in consideration of play at the position where the lid is attached (pivot attachment) and variations in the dimensions of each part. It is necessary to set large.
[0008]
As a result, the lock pin and the lock hole are repeatedly engaged and disengaged, and the hole edge of the lock hole is deformed due to pressurization by the high pressure in the chamber, and the lock pin does not reliably engage the lock hole.
[0009]
As shown in FIG. 3 of the prior art, the engaging portion of the lock pin and the lock hole is below the edge of the opening of the chamber (container) and holds the lock pin attached to the chamber side. The groove forming member has a concave cross section, and the overlapping portion between the outer peripheral portion of the lid and the chamber becomes large. As a result, the weight of the lid increases and the opening and closing is troublesome.
[0010]
The present invention provides a locking position between the lid and the high-pressure vessel above the opening of the high-pressure vessel, eliminates the need for a concave groove into which water or dust can enter, reduces the weight of the lid, and externally. The locked state can be confirmed.
[0011]
[Means for Solving the Problems]
The present invention includes a high-pressure vessel having an opening at the top, a lid that is pivotally supported in the vertical direction and seals the opening when closed, and projects outwardly at equal intervals on the outer periphery of the lid A plurality of protrusions, a plurality of locking bodies positioned on the side of the high-pressure vessel so as to oppose these protrusions, and arranged around the high-pressure vessel so as to be rotatable in a circumferential direction. e Bei a rotating ring to operate in conjunction with the locking body between a locked position and an unlocked position by rotation operation to, the locking member, movably pivoted in and out direction by a shaft pin, and A side surface shape that engages with the projecting portion is formed at the upper end portion to form a U-shaped locking portion, and a lower part than a pivot point by the shaft pin of the locking body is brought into contact with the guide member of the rotating ring. Thus, the rotation operation of the rotating ring and the locking body are interlocked .
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described with reference to the drawings. First, FIG. 1 is a partial cross-sectional view (unlocked) of a main part of a high-pressure vessel lid device according to the present invention, FIG. 2 is a side view including a partial cross-section of the upper portion of the high-pressure vessel, and FIG. 4 is a fragmentary sectional view (lock) of the main part, FIG. 5 is a plan view (unlock) of the engaging body and the engaging part provided on a part of the rotating ring, and FIG. FIG. 7 is an upper side view (unlock) of the high-pressure vessel, and FIG. 8 is a plan view (lock) of part of the locking body and the locking portion of the rotating ring.
[0015]
(1) is a high-pressure vessel made of stainless steel having a bottomed cylindrical shape and having an opening (2) at the top. (3) is not shown but one side is fixed to the outer wall surface (4) of the high-pressure vessel (1). At least two pairs of projecting portions (5) serving as locking means arranged at equal intervals on the outer peripheral edge are fixed by a lid pivotally supported by the hinge shaft that is pivotable in the vertical direction.
[0016]
(6) is a plurality (eight) of locking units attached to the outer wall surface (4) below the opening (2) of the high-pressure vessel (1), as shown in FIG. A mounting plate (9) to which a pair of rollers (7), (7) and a roller (8) provided in a direction perpendicular to the rollers are attached, and a support plate (11) to which a shaft pin (10) is attached Consists of.
[0017]
(12) is arranged outside the high-pressure vessel (1) with a gap, and an outer peripheral edge is interposed between the rollers (7) and (7) and an edge is applied to the roller (8). As shown in FIGS. 3 and 5, the rotating ring is provided with protruding portions (13) that protrude inward at four locations divided at equal intervals, and the vicinity of the protruding portion is made of synthetic resin and has a bowl shape. Guide members (14) are fixed in an oblique direction. (15) is an operation handle fixed to a part of the rotating ring (12).
[0018]
(16) is a locking body having a locking portion (17) having a U-shaped side surface at the top, a guide pin (18) at the bottom, and an intermediate portion movably supported by a shaft pin (10). The guide pin moves along the guide member (14) on the inner side of the rotating ring (12) to move the locking portion (17) inward and outward.
[0019]
(19) One end is hooked to the locking body (16) and the other end is hooked to the support plate (11), and the constant locking portion (17) is biased to the inside and the guide pin (18) is biased to the outside. An elastic body (hereinafter referred to as a spring).
[0020]
The locking positions of the protrusions (5) and the locking portions (17) are formed above the opening (2) of the high-pressure vessel (1). (20) is a packing fixed to the lower inner periphery of the lid (3).
[0021]
Next, the state of use will be described. First, the unlocked state of the protrusion (5) and the locking body (16) in which the lid (3) and the high-pressure vessel (1) are free will be described. This state is illustrated in FIG. 1, FIG. 5, FIG. 6, and FIG. 7. The guide pin (18) is guided by the guide member (14) as shown in FIG. It is moved outward against (19).
[0022]
For this reason, the locking portion (17) is separated from the protruding portion (5) and is unlocked, and the lid (3) can be opened.
[0023]
Next, the locked state of the protruding portion (5) and the locking portion (17) will be described. 2, 4, and 8, the guide pin (18) is guided along the inclination of the guide member (14) as shown in FIG. 4, and is urged by the urging force of the spring (19). The locking part (17) locks so as to surround the upper part, the side part, and the lower part of the protruding part (5).
[0024]
For this reason, the latching | locking part (17) and protrusion part (5) will be in a locked state, and a packing (20) will closely_contact | adhere to the upper periphery of an opening part (2), and will make the inside of a high pressure container (1) a sealing state.
[0025]
【The invention's effect】
As described above, according to the present invention, a plurality of protruding portions protruding outward are provided at equal intervals on the outer peripheral edge of the lid, and a plurality of locking bodies are fixed to the high-pressure vessel so as to face these protruding portions. By operating these locking bodies with a rotating ring disposed around the high-pressure vessel, the locking body is configured to be engaged with and disengaged from the protruding portion to lock and unlock the lid. The body is pivotally supported by the shaft pin so that it can move inward and outward, and the upper end has a U-shaped locking part that engages with the protrusion, and the rotating ring guides below the pivot point by the shaft pin. by that is brought into contact with the member is interlocked with the rotating operation and the locking of the rotating ring, Figure while seeking, in the opening portion of the pressure vessel there is no conventional such receiving groove or recess the weight of the lid Inconveniences such as water and dust entering these receiving grooves and recesses are eliminated.
[0026]
Further, since the protruding portion provided on the lid is simply a member protruding from the outer periphery of the lid, the member constituting the lock mechanism is the simplest and compact shape, and the weight of the lid is reduced.
[0027]
Since the locking body has a U-shaped side surface and surrounds the protruding portion when locked, unlike the conventional configuration in which the pin is inserted into the pin hole and locked, the protruding portion or the locking portion There are no cases where the portion is repeatedly locked and released repeatedly, deformed by the pressure in the high-pressure vessel, or cannot be locked.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a main part of a lid device for a high-pressure vessel according to the present invention.
FIG. 2 is a side view including a partial cross section of the upper portion of the high-pressure vessel.
FIG. 3 is a plan view of the rotary ring.
FIG. 4 is a partial cross-sectional view of the same main part.
FIG. 5 is a plan view of a locking body and a locking portion provided on a part of the rotating ring.
FIG. 6 is an overall plan view of the rotary ring.
FIG. 7 is a top side view of the same high-pressure vessel.
FIG. 8 is a plan view of a part of the locking body and the locking part of the rotating ring.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 High pressure vessel 2 Opening part 3 Lid 5 Protrusion part 16 Locking body 17 Locking part 19 Elastic body

Claims (1)

A high-pressure vessel having an opening in the upper part; a lid pivotally supported in the vertical direction so as to seal the opening when closed; and a plurality of protrusions projecting outward at equal intervals on the outer periphery of the lid A plurality of engaging members fixed to the high-pressure vessel side so as to be opposed to the protruding portions, and a rotation operation in the circumferential direction around the high-pressure vessel so as to be rotatable in the circumferential direction. Bei example a rotating ring to operate in conjunction with the locking body between a locked position and an unlocked position by the said locking member, movably pivoted in and out direction by a shaft pin, and the upper portion The side surface shape that engages with the projecting portion forms a U-shaped locking portion , and rotates by contacting the guide member of the rotating ring below the pivot point by the shaft pin of the locking body. A lid device for a high-pressure vessel, characterized in that the rotation operation of the ring is interlocked with the locking body .

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