JP2006076625A - Locking structure of injection port cap for chemical liquid bath - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a locking structure of an injection port cap for a chemical liquid bath by which the locking of the cap is established without being affected by the chemical liquid which is stored in the chemical liquid bath. <P>SOLUTION: For this locking structure, two structures are adopted. In the first structure, a pair of protrusions 6 which are integrated with walls are molded on the walls on both sides across the chemical liquid injection port 2 of the chemical liquid bath 1 made of a synthetic resin, and a long and thin lock member 8 is arranged in a manner to be astride of a space directly above the cap 2. Then, respective ends of the lock member 8 are fixed to the protrusions 6 by a fastener 11. In the second structure, a pair of fixed seats 20 are formed on external surfaces of the walls on both sides across the chemical liquid injection port 2 of the chemical liquid bath 1, the long and thin lock member 8 is arranged between the fixed seats in a manner to be astride of a space directly above the cap 2. Then, one member of a male shape member 22 or a female shape member 23 of a fastener 24 is inserted in a bag shape in the seat surface of the fixed seat 20 in such a manner that the member may not be exposed in the chemical liquid bath, and the ends of the lock member 8 is fixed by the other member by joining with the first member. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a lock structure for a chemical tank inlet cap that locks a cap that closes a chemical tank inlet.

  In recent years, in a system for supplying well water, in order to improve hygiene, sterilization using a sterilization device, specifically, injecting chemical liquid stored in a chemical tank into the well water has been promoted. Yes.

  Such a chemical solution tank used for sterilization generally has a structure in which an upper wall has a chemical solution inlet and stores a chemical solution necessary for sterilization from the chemical solution inlet. Normally, this chemical solution inlet is closed with a cap.

  By the way, there are many chemical solutions that are harmful to the human body, and in many cases, the cap must not be opened unnecessarily.

  Conventionally, in the sterilization apparatus, a special structure is not provided in the apparatus itself for such measures, and instead, a person is not allowed to enter the area where the sterilization apparatus is installed. Measures are taken.

  However, safety concerns cannot be relieved. Therefore, in the chemical injection device such as a sterilization device, attention has been paid to ensuring safety, and further safety has been pursued.

  In order to ensure its safety, it is considered that the liquid injection device such as the sterilization device can be locked so that the cap cannot be opened unnecessarily by diverting the cap lock structure already used in the water receiving tank of the water supply system. Yes.

  Here, many of the lock structures of caps conventionally used in water receiving tanks are screw shaft parts formed by penetrating metal screw members from the inside of the tank to the outside of the tank on both sides of the upper wall portion of the water receiving tank sandwiching the cap. Is formed, an elongated lock member extending between the screw shaft portions is disposed immediately above the cap, and each end portion of the lock member is fastened to the screw shaft portion with a nut.

  However, the chemical tank is different from the water receiving tank (the water receiving tank is water), and since the chemical liquid is stored, the screw member corrodes from the part exposed in the tank due to the influence of the chemical liquid in the chemical liquid tank, There is a possibility that the lock structure is not established.

  Therefore, an object of the present invention is to provide a lock structure for an inlet cap for a chemical solution tank that is not affected by the chemical solution stored in the chemical solution tank and that locks the cap.

  In order to achieve the above object, the invention according to claim 1 forms a pair of protrusions integrally formed with the wall portions on both side wall portions sandwiching the chemical inlet of the chemical resin tank made of synthetic resin. And, an elongated lock member straddling just above the cap is arranged between the pair of protrusions, and each end of the lock member is fixed to the pair of protrusions by the fixing means, and is not affected by the chemical solution in the chemical solution tank. The lock structure is adopted.

  The invention according to claim 2 has a simpler structure and, as a fixing means, allows the end of the lock member to pass through the tip side of the protrusion so that the end of the lock member of claim 1 can be fixed. A structure is adopted in which a through hole is formed, a retaining through hole is formed in a protruding portion penetrating the lock member, and the locking member is retained by inserting a retaining tool through the retaining through hole.

  In order to achieve the above object, the invention according to claim 3 forms a pair of fixed seats on the outer surface of the wall portion on both sides of the chemical solution inlet of the chemical solution tank, and directly above the cap between the pair of fixed seats. A long and narrow lock member is placed, and one of the fixtures with male and female members is inserted and attached to the seat surface of the fixed seat in a bag shape so as not to be exposed in the chemical tank. A lock structure is adopted in which the other member is fastened to one member and the end of the lock member is fixed, so that it is not affected by the chemical solution in the chemical solution tank.

  The invention described in claim 4 employs a bolt member as a male member of the fixture and a bolt member as a female member so that the end of the lock member of claim 3 can be fixed with a simpler structure. The nut member which becomes a pair is adopted.

  According to the first and third aspects of the present invention, the component for fixing the lock member does not need to be exposed in the chemical tank, so that it is not affected by the chemical stored in the chemical tank, and the chemical inlet It is possible to lock the cap that is blocking. In addition, the part to which the lock member is fixed does not have to be a special part that can withstand the chemical solution, and the cost burden can be reduced.

  According to invention of Claim 2, Claim 4, in addition to the said effect, there exists an effect that a lock member can be fixed by the combination of simple components.

[First Embodiment]
The present invention will be described below based on the first embodiment shown in FIGS.

  1 is a plan view of a cap lock structure of a chemical tank used in a chemical injection device such as a sterilization apparatus, FIG. 2 is a front view thereof, and FIG. 3 is an exploded perspective view thereof.

  In the figure, 1 indicates a chemical tank. The chemical tank 1 is formed, for example, in a box shape from a synthetic resin member. In the center of the upper wall 1a of the synthetic resin pharmaceutical liquid tank 1, a chemical liquid inlet 2 is integrally formed (partially shown by a solid line). The chemical solution inlet 2 is formed of a short cylindrical portion 2a having a screw portion (not shown) on the outer peripheral surface. From the opening (not shown) of the chemical solution inlet 2, for example, a chemical solution used for sterilizing well water is input.

  That is, the chemical solution tank 1 has a structure in which the chemical solution introduced from the chemical solution inlet 2 is stored. Of course, the chemical bath 1 is formed using a synthetic resin member that can withstand the chemical.

  The chemical solution inlet 2 is detachably closed with a cap 3. Specifically, for example, the cap 3 has a structure including a main body 3a that covers the short cylindrical portion 2a from the outside and a threaded portion (not shown) formed on the inner peripheral surface of the main body 3a. Yes. That is, the chemical solution inlet 2 is configured to be closed when the cap 3 is screwed into the outer peripheral portion of the short cylindrical portion 2a and to be opened when the cap 3 is returned.

  A cap 3 that closes the chemical solution inlet 2 is locked by a cap lock structure 5 so that it cannot be removed. Details of the cap lock structure 5 are shown in FIG.

  The cap lock structure 5 will be described with reference to FIG. 3. In the figure, 6 is a pair of protrusions. The pair of projecting portions 6 are formed of, for example, a short strip plate portion 6a that rises from a point of the upper wall 1a portion on the left and right sides close to the charging port 2 with the chemical solution charging port 2 interposed therebetween. In addition, the short strip plate portion 6a is formed in a layout in which a wide surface (side surface) faces in the front-rear direction. Each of the short strip plate portions 6 a is formed integrally with the wall portion of the chemical solution tank 2, and has the property of being resistant to the chemical solution, like the chemical solution tank 2. A locking through-hole 7 (corresponding to the retaining through-hole of the present application) is formed in the plate surface portion on the front end side of each short strip plate portion 6a.

  On the other hand, reference numeral 8 denotes an elongated lock member. The lock member 8 is formed, for example, by forming a U-shaped raised portion 9 corresponding to the outer diameter of the cap at a part of the band plate member, for example, at the center in the longitudinal direction. With this shape, the lock member 8 is configured to straddle the closed cap 3. Further, the end portion 8 a of the lock member 8 has a length that is disposed on the projection portion 6 when straddling the cap 3. Furthermore, slit-shaped projection through holes 10 through which the projections 6 can pass are formed at the positions of the end portions 8a, 8a corresponding to the projections 6, respectively. That is, when the locking member 8 has the protruding portion 6 inserted through the protruding hole 10 and straddles the closed cap 3, the raised portion 9 is disposed immediately above the cap 3, and both end portions 8a serving as seats are formed. 8 a is arranged on the upper wall 1 a of the chemical tank 2.

  On the other hand, reference numeral 11 in the drawing denotes a fixture (corresponding to the fixing means of the present application) for fixing the end portions 8a, 8a of the lock member 8. For the fixture 10, a member to be inserted into the locking through hole 7 after penetrating the protrusion 6, for example, a bolt member 12, and a nut member 13 that is screwed into an insertion end of the bolt member 12 are used. The fixing member 11 prevents the end portions 8 a and 8 a of the lock member 8 from coming out of the protruding portion 6.

  That is, when the cap 3 that closes the chemical solution inlet 2 is locked using the cap lock structure 5 configured as described above, as shown in FIG. 2 is placed on the upper wall 1a of the chemical tank 1 while being inserted through the protrusions 6 and 6 on both sides of the liquid. Then, the raised portion 9 is arranged so as to surround the periphery of the cap 3 (left side, upper side, right side). That is, the lock member 8 is disposed between the protrusions 6 and 6 in a posture straddling the top of the cap 3.

  Thereafter, the bolt member 12 is inserted into the lock through hole 7 of each projection 6 protruding from the projection through hole 10. Next, as shown in FIGS. 1 and 2, a nut member 13 is attached to the end of the bolt member 12 so that the bolt member 12 does not come out. Then, each end 8 a of the lock member 8 is restrained so that the bolt member 12 inserted into the lock through hole 7 becomes an obstacle and does not come out of the protrusion 6. Thus, the lock member 8 is fixed to the chemical tank 1.

  That is, the cap 3 is locked by the lock member 8 so that it cannot be removed.

  When the lock member 8 is fixed to the protrusion 6 integrated with the chemical tank 1 as described above, the fixing parts that may be corroded such as the bolt member 12 and the nut member 13 are not exposed to the chemical tank 1. .

  Therefore, the cap 3 can be locked without being affected by the chemical solution in the chemical solution tank 1. In addition, the parts for fixing the lock member 8 need not be special parts that can withstand the chemical liquid because the chemical liquid in the chemical tank 1 is not affected, and the cap lock structure 5 is inexpensive. In particular, when the bolt member 12 or the nut member 13 is used for fixing the lock member 8, the lock member 8 can be fixed with a simple and inexpensive structure.

  In the first embodiment, the bolt and nut members 12 and 13 are used. However, the present invention is not limited to this, and a padlock or the like may be used, and any component or device that is fixed by being inserted through the lock hole 10 may be used. That's fine.

[Second Embodiment]
4 to 6 show a second embodiment of the present invention.

    In the present embodiment, the chemical liquid tank is configured so that the lock member 8 is not affected by the chemical liquid in the chemical liquid tank 1 by using the fixture 24 composed of male and female members such as the bolt member 22 and the nut member 23. The structure fixed to 1 is adopted.

  In this structure, as shown in FIG. 6, a pair of fixed seats 20 are formed on the outer surfaces of the upper walls 1a on both sides of the chemical tank 1 as shown in FIG. For example, a nut member 23 (corresponding to a female member) is embedded in the seat surface of the seat 20 in a bag shape by insert molding so as not to be exposed inside the chemical tank 1. As the structure on the lock member 8 side, a structure in which bolt through holes 25 (through holes) are formed in the end portions 8 a of the lock member 8 mounted on the fixed seat 20 is used.

  With these structures, as shown in FIGS. 4 and 5, when the lock member 8 is screwed into the screw hole of the nut member 23 opened on the fixed seat 20 from the bolt through hole 25 (fastening). ), Each end 8 a is sandwiched between the upper wall 1 a of the chemical tank 1. Reference numeral 26 denotes a washer interposed between the head of the bolt member 22 and the end 8a.

  Even in such a structure in which one of the male and female fixtures 24 is inserted into the chemical tank 1 in a bag shape, the cap 3 is locked so as not to be affected by the chemical liquid in the chemical tank 1 as in the first embodiment. Can be made. In addition, each component of the fixture 24 does not have to be affected by the chemical solution in the chemical solution tank 1, and may not be a special component that can withstand the chemical solution, as in the first embodiment. In particular, when the bolt member 22 or the nut member 23 is used, the lock member 8 can be fixed with a simple and inexpensive structure.

  In this embodiment, the nut member 23 is embedded in the upper wall 1a of the chemical tank 1 in a bag shape. However, the head of the bolt member 22 is embedded in the upper wall portion 1a of the chemical tank 1 in a bag shape. It may be a structure.

  However, in the second embodiment, the same parts as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.

  The present invention is not limited to the first and second embodiments described above, and various modifications may be made without departing from the spirit of the present invention. For example, in any of the above-described embodiments, the example of locking the cap of the chemical tank used in the sterilization apparatus has been described. However, the present invention is not limited thereto, and the cap attached to the chemical tank storing other chemical solutions is locked. It goes without saying that can also be applied.

The top view of the lock structure of the inlet cap which concerns on the 1st Embodiment of this invention. The front view of a lock structure similarly. The perspective view which decomposed | disassembled the lock structure similarly. The top view of the lock structure of the inlet cap which concerns on the 2nd Embodiment of this invention. The front view of a lock structure similarly. The perspective view which decomposed | disassembled the lock structure similarly.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Chemical solution tank, 2 ... Chemical solution input port, 3 ... Cap, 5 ... Cap lock structure, 7 ... Lock through-hole (prevention through-hole), 10 ... Projection through-hole, 12, 13 ... Bolt member, nut Member (clamp), 22 ... bolt member (male member), 23 ... nut member (female member).

Claims (4)

A chemical solution tank made of a synthetic resin, which has a chemical solution inlet, and the chemical inlet is detachably closed with a cap;
A pair of protrusions formed integrally with the wall portion on the wall portion of the chemical bath on both sides across the chemical inlet; and
An elongated lock member disposed between the pair of protrusions across the top of the cap;
A locking structure for a chemical solution tank inlet cap, comprising: fixing means for fixing each end of the lock member to the pair of protrusions. The fixing means includes a projection through hole formed at an end of the lock member and penetrating the tip end side of the projection, a retaining through hole formed in a projection portion penetrating the lock member, and the extraction The locking structure of the medicinal tank inlet cap according to claim 1, further comprising: a retaining member that is inserted into the retaining hole and retains the end of the locking member. A chemical solution tank made of a synthetic resin, which has a chemical solution inlet, and the chemical inlet is detachably closed with a cap;
A pair of fixed seats formed on the outer surface of the wall of the chemical tank on both sides across the chemical inlet,
An elongated locking member disposed between the pair of fixed seats over the top of the cap;
It has a male member and a female member that can be fastened to the male member, and one of the members is attached to the seat surface of the fixed seat so as not to be exposed to the inside of the chemical tank. And a fixing member for fixing the end of the lock member by fastening the other member to the one member.   4. The lock structure for a chemical solution tank inlet cap according to claim 3, wherein the male member of the fixture is a bolt member, and the female member is a nut member paired with the bolt member. .

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