JPH09238590A - Water feeder for breeding experimental animal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a water feeder capable of preventing biting by a mouse, etc., and standing the use of an autoclave for of sterilization. SOLUTION: The water feeder 1 is spirally fitted with the bottomed cylindrical metallic cap 4 to the mouth part 3 of a water storing bottle 2 formed from heat resistance plastic and has a heat resistance seal packing 5 in sented between the tip surface of the mouth part 3 and the inner face of the bottom wall part 4a of the cap 4 and the base tip part of a metallic water feeding pipe 6 fixed through the center of the bottom wall part 4a of the cap 4.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a mouse, a rat,
The present invention relates to a water supply device used by being attached to a cage for raising experimental animals such as guinea pigs and rabbits.

[0002]

2. Description of the Related Art A conventional water supply tool is one in which a rubber stopper is inserted into the mouth of a water bottle made of heat-resistant plastic such as polycarbonate or polysulfone, and a water supply pipe made of metal such as stainless steel is held through the rubber stopper. In some cases, a ball valve is provided at the tip of the water supply pipe. In this water supply tool, as in the embodiment of the present invention shown in FIG. 1, the water supply pipe part is inserted into the cage from the net lid of the experimental animal breeding cage to fix the water supply tool main body part in a fixed position. . For a mouse or the like in the cage, the valve can be opened by poking a sphere partially protruding from the tip of the water supply pipe to drink water. In some water supply pipes, instead of providing a ball valve, the tip end side of the water supply pipe is made thin so that water is retained by a capillary action so that water can be supplied as much as the mouse or the like sucks.

[0003]

In the conventional water supply tool, since the rubber stopper is used to hold the water supply pipe, when the water supply tool is attached to the experimental animal breeding cage,
If it is not attached properly, the rubber plug may come off, which may cause water leakage. In addition, as with the breeding cage, the water supply tool needs to be frequently sterilized, and for these sterilizations, high temperature steam of about 120 ° C.
An autoclave, which is heated for 30 minutes, is used as an effective sterilizing means. However, the rubber stopper has a problem that it is difficult to withstand the above high temperature and promotes deterioration of the rubber stopper. Further, when the above rubber stopper is used, the rubber stopper is tightly fitted to the inner peripheral surface of the mouth of the water bottle, so that the water stopper is removed when the water bottle is replenished or sterilized. Was difficult.

In view of the above, the present invention provides a water supply tool which can prevent biting by a mouse or the like, can use an autoclave for sterilization, and can easily attach and detach a cap (corresponding to a rubber stopper). The purpose is to do. Other objects and effects of the present invention will be apparent from the embodiments of the invention described later.

[0005]

A water supply tool 1 according to a first aspect of the present invention has a bottomed cylindrical metal cap 4 screwed into a mouth 3 of a water bottle 2 made of heat-resistant plastic. A heat-resistant seal packing 5 is interposed between the tip surface of the mouth portion 3 and the inner surface of the bottom wall portion 4a of the cap 4, and the base end of the metal water supply pipe 6 is provided at the center of the bottom wall portion 4a of the cap 4. It is formed by penetrating and fixing parts.

In the water supply tool 1, the cap 4 can be attached to the mouth portion 3 of the water bottle 2 by a simple operation of fitting the cap 4 onto the mouth portion 3 of the water bottle 2 and rotating the cap 4. It is possible and the removal of the cap 4 is likewise easy. And
Since the water bottle 2 and the seal packing 5 are each made of heat resistant material, and the cap 4 and the water supply pipe 6 are made of metal, it is possible to use the most effective autoclave for sterilizing these.

The invention according to claim 2 is the water supply tool 1 for raising experimental animals according to claim 1, in which the male screw 7 is continuously formed on the outer peripheral surface of the mouth portion 3 of the water bottle 2 and the cap 4 is provided. Is formed on its inner peripheral surface with female screw ridges 9 engageable with the groove 7a of the male screw 7 at regular intervals in the circumferential direction, and on the outer peripheral surface of the cap 4, adjacent female screw ridges 9 are formed.
The protrusions 10 for grips extending in the vertical direction are provided between them.

In this water supply tool 1, the cap 4 is fitted onto the mouth portion 3 of the water bottle 2, and the female screw ridge 9 of the cap 4 is engaged with the groove portion 7a of the male screw 7 on the outer peripheral surface of the mouth portion 3. By combining and turning, the cap 4 can be attached to the mouth portion 3 of the water bottle 2 very easily, and its removal is also very easy. The rotation operation of the cap 4 can be easily performed via the handle protrusion 10. The metal cap 4 is formed on the inner peripheral surface of the cap 4 at regular intervals in the circumferential direction of the female thread ridges 9 engageable with the grooves 7a of the male thread 7 of the mouth portion 3 of the water bottle 2, and the outer circumference of the cap 4 is formed. On the surface, the grip protrusion 10 extending in the longitudinal direction between the adjacent screw protrusions 9 for female threads
Therefore, when the cap 4 is press-molded, the female threaded ridge 9 on the inner peripheral surface side and the handle ridged portion 10 on the outer peripheral surface do not overlap each other, which facilitates the molding. In addition to being able to be carried out, the handle projection 10 is easily formed.

The invention according to claim 3 is the invention according to claim 1 or 2.
In the water supply tool 1 for raising experimental animals according to 1, the water supply pipe 6
Of the cap 4 is fixed to the center of the bottom wall portion 4a of the cap 4 so as to project from the inner surface of the bottom wall portion 4a by a required height H, and a heat-resistant seal packing having a thickness substantially corresponding to the projected height H. 5 is placed on the bottom wall portion 4a of the cap 4 in such a state that the central opening portion 5a of the packing 5 is fitted into the outer peripheral surface of the base end protruding portion of the water supply pipe 6 under pressure, and the seal is formed. The packing 5 is locked and fixed by both end projecting locking pieces 12b, 12b of a locking member 12 having a substantially inverted Ω shape in a side view, which is elastically engaged with the base end portion of the water supply pipe 6.

In this water supply tool 1, the central opening 5a of the heat-resistant seal packing 5 is replaced by the bottom wall 4a of the cap 4.
By fitting the base end of the water supply pipe 6 protruding from the inner surface into pressure contact with the outer peripheral surface thereof, the bottom wall 4a
The watertightness between the inner surface of and the outer peripheral surface of the water supply pipe 6 is secured. Further, the packing 5 is locked and fixed from the upper side by the both-end protruding locking pieces 12b, 12b of the locking member 12 having a substantially inverted Ω shape in a side view, which is elastically engaged with the base end portion of the water supply pipe 6. It is possible to prevent the water supply pipe 6 from coming out from the base end portion.

The invention according to claim 4 is the water supply tool 1 for raising experimental animals according to any one of claims 1 to 3, in which the base end of the water supply pipe 6 is located at the center of the bottom wall 4a of the cap 4. A supporting cylinder portion 8 is integrally provided so as to project downward from a through hole 4c through which the base pipe portion 8 of the water supply pipe 6 is inserted, and the inner peripheral surface of the supporting pipe portion 8 and the water supply pipe 8 are inserted. The brazing material 11 is poured into the gap between the outer peripheral surface of the base portion 6 and the brazing material 11 to be brazed, thereby fixing the base end portion of the water supply pipe 6 to the cap 4.

In the water supply tool 1, a brazing material 11 such as silver wax is applied from the inside of the cap 4 to the gap between the inner peripheral surface of the support tube portion 8 and the outer peripheral surface of the base end portion of the water supply pipe 6. By pouring and brazing, the water supply pipe 6 is firmly fixed to the cap 4, and the watertightness between the water supply pipe 6 and the cap 4 is secured.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a water supply tool 1 according to the present invention attached to a cage K for raising experimental animals.
FIG. 6 shows a detailed structure of the water supply tool 1. As shown in FIG. 2, the water supply tool 1 includes a water storage bottle 2 made of plastic.
And a metal cap 4 having a cylindrical shape with a bottom that is screwed into the mouth portion 3 of the water bottle 2, and between the tip surface of the mouth portion 3 of the water bottle 2 and the inner surface of the bottom wall portion 4a of the cap 4. It is composed of a heat-resistant seal packing 5 mounted and a water supply pipe 6 made of metal and fixed to the bottom wall portion 4a of the cap 4 so as to penetrate therethrough.

The structure of the water supply tool 1 will be described in more detail. The water storage bottle 2 is integrally molded in a substantially rectangular tube shape from a heat-resistant synthetic resin having an extremely high melting point such as polycarbonate or polysulfone. Bottle 2
The mouth portion 3 is formed in a cylindrical shape, and a male screw 7 is continuously formed on the outer peripheral surface of the mouth portion 3. Cap 4
Is a press-molded bottomed cylindrical shape made of stainless steel, and is composed of a bottom wall portion 4a and a peripheral wall portion 4b.
In the center of a, a cylindrical support tube portion 8 is integrally provided so as to project downward from a through hole 4c through which the water supply tool 1 penetrates. On the inner peripheral surface of the peripheral wall portion 4b of the cap 4, there is formed a female thread ridge 9 which can be engaged with the groove portion 7a of the male thread 7 of the mouth portion 3, as is apparent from FIGS. 3 and 4A. , For example, three are formed at regular intervals in the circumferential direction, and on the outer peripheral surface of the peripheral wall portion 4b,
A grip ridge 10 extending in the vertical direction (axial direction) is formed between the female thread ridges 9, 9 adjacent to each other in the circumferential direction.

Since the female thread ridge 9 and the handle ridge 10 are formed by press molding, the female thread ridge 9 forms a recess on the outer peripheral surface of the cap 4. In addition, the grip projection 10 forms a projection on the inner peripheral surface of the cap 4, and the grip projection 10 shown in FIG. 3 actually shows a recess on the back side thereof. It is a thing.

The water supply pipe 6 is made of, for example, stainless steel in a cylindrical shape, and has a support cylindrical portion 8 of the cap 4.
Has an outer diameter slightly smaller than the inner diameter of. In order to penetrate and fix the water supply pipe 6 to the cap 4, in particular, as shown in FIG. 6, one end of the water supply pipe 6, that is, the base end is inserted into the support tube portion 8 of the cap 4 and the water supply pipe 6 is inserted. In a state in which the base end portion 6 of the cap 6 projects a required height H from the inner surface of the bottom wall portion 4a of the cap 4, a gap is formed between the inner peripheral surface of the support tubular portion 8 and the outer peripheral surface of the base end portion of the water supply pipe 6. , The brazing material 11 such as silver wax is poured from the inside of the cap 4 so that the brazing material 11 is sufficiently distributed, and the base end portion of the water supply pipe 6 and the supporting tube portion 8 are brazed, so that the water supply pipe 6 is fixed to the bottom wall of the cap 4. It is fixed by penetrating in the center of the portion 4a. As a result, the water supply pipe 6 is firmly fixed to the cap 4, and the watertightness between the water supply pipe 6 and the cap 4 is secured.

The heat-resistant seal packing 5 has a melting point of 120.
As shown in FIG. 6, the packing 5 is made of a material that can withstand use of an autoclave as a sterilizing means at a temperature of ° C or higher, for example, silicon rubber, and has a donut shape. A thickness equal to or slightly smaller than the protruding height H of the base end portion of the water supply pipe 6 protruding from the inner diameter (inner diameter of the central opening 5a) slightly smaller than the outer diameter of the water supply pipe 6, and the cap 4 Peripheral wall part 4
and an outer diameter smaller than the inner diameter of b.

When mounting the heat-resistant seal packing 5, the central opening 5a of the packing 5 is pressed against the outer peripheral surface of the base end of the water supply pipe 6 protruding from the inner surface of the bottom wall 4a of the cap 4. Are fitted together and placed on the inner surface of the bottom wall portion 4a of the cap 4. As shown in FIGS. 2, 3 and 5, the heat resistant seal packing 5 is elastically engaged with the base end portion of the water supply pipe 6 in a side view and is substantially tilted Ω.
The locking members 12 are locked and fixed from above by the locking pieces 12b, 12b protruding from both ends. The substantially Ω-shaped locking member 12 in a side view is integrally formed of a relatively thin stainless plate, and has a substantially C-shaped mounting portion 12a having an outer diameter slightly larger than the inner diameter of the water supply pipe 6, This C-shaped mounting part 1
A pair of locking pieces 12b, 12 projecting from both ends of 2a
In the case of mounting, the C-shaped mounting portion 12a is elastically engaged with the base end portion of the water supply pipe 6 and the locking pieces 12b, 12b at both ends thereof are bent outward so as to be slightly downward. It may be projected and locked on the heat-resistant seal packing 5 as shown.

As described above, the heat resistant seal packing 5 is
Water supply pipe 6 protruding from the inner surface of the bottom wall portion 4a of the cap 4
Since the base end portion is fitted onto the bottom wall portion 4a so as to be pressed against the outer peripheral surface thereof and arranged on the inner surface of the bottom wall portion 4a, the watertightness between the inner surface of the bottom wall portion 4a and the outer peripheral surface of the water supply pipe 6 can be secured. . Further, the packing 5 is provided with both end projecting locking pieces 12 of a locking member 12 having a substantially inverted Ω shape in a side view, which is elastically engaged with the base end of the water supply pipe 6.
Since it is locked and fixed from the upper side by b and 12b, it is possible to prevent the water supply pipe 6 from coming out from the base end portion. Even if water leaks from between the inner surface of the bottom wall portion 4a and the outer peripheral surface of the water supply pipe 6, the water is leaked between the inner peripheral surface of the support tubular portion 8 and the outer peripheral surface of the base end portion of the water supply pipe 6. Water is not leaked to the outside due to the brazing provided.

A ball valve 13 is provided at the tip of the water supply pipe 6. The ball valve 13 includes a plurality of spheres 13a inserted into the water supply pipe 6 and a throttle portion (valve seat) 6a formed at the tip of the water supply pipe 6 and closely engaging with the sphere 13a. Each sphere 13a has an outer diameter slightly smaller than the inner diameter of the water supply pipe 6. In addition, in the upper part of the water supply pipe 6, a sphere 13
An inward projection 14 is provided to prevent the a from coming out from above. Therefore, in this ball valve 13, the mouse or the like pokes the ball 13a that partially projects from the lower end of the water supply pipe 6 to open the valve, and the water in the water supply pipe 6 is supplied from the tip thereof. . Instead of the ball valve 13 as described above, a valve structure based on a capillary action in which the tip side of the water supply pipe 6 is formed thin may be used.

The water supply tool 1 having the above-mentioned structure is
By fitting the cap 4 onto the mouth portion 3 of the water bottle 2 and engaging the female thread ridge 9 on the inner peripheral surface of the cap 4 with the groove portion 7a of the male screw 7 on the outer peripheral surface of the mouth portion 3, the cap 4 is rotated. Can be attached to the mouth portion 3 of the water bottle 2 very easily, and the removal of the cap 4 is similarly easy. In this case, the rotation operation of the cap 4 can be easily performed through the grip projection 10 provided on the outer peripheral surface of the cap 4. And again, this water supply tool 1 is a water bottle 2
Is made of heat-resistant plastic, the seal packing 5 is made of heat-resistant silicone resin, and the cap 4 and the water supply pipe 6 are made of metal such as stainless steel. Therefore, use an autoclave to sterilize them. Is possible.

The metal cap 4 is formed on the inner peripheral surface of the cap 4 at regular intervals in the circumferential direction of the female thread ridges 9 engageable with the grooves 7a of the male thread 7 of the mouth 3 of the water bottle 2. However, since the grip ridge 10 extending in the longitudinal direction is provided on the outer peripheral surface of the cap 4 between the adjacent female thread ridges 9 in a protruding manner, when the cap 4 is press-molded, the inner peripheral surface side The female thread ridge 9 and the handle ridge 10 on the outer peripheral surface do not overlap with each other, so that the molding can be easily performed and the grip ridge 10 can be easily formed.

When the water supply tool 1 is used, as shown in FIG. 1, the water supply pipe 6 side of the water supply tool 1 is connected to the cage body T.
The bottom wall 4a of the cap 4 is brought into contact with the net lid R portion by inserting the mesh lid R between the wires of the net lid R attached to the net lid R, and the water bottle 2 side in which water is stored is attached to the net lid R. It can be fixed to the required part of. Thus, the mouse or the like in the cage body T can open the valve by poking the sphere 13a that partially projects from the tip of the water supply pipe 6 and drink water. In this case, since the cap 4 is made of a metal such as stainless steel like the water supply pipe 6, an experimental animal such as a mouse does not bite the cap 4 and can be normally used for a long period of time.

Water-tightness between the mouth portion 3 of the water bottle 2 of the water supply tool 1 and the cap 4 is ensured by the heat-resistant seal packing 5. The packing 5 is fitted to the base end portion of the water supply pipe 6 projecting from the inner surface of the bottom wall portion 4a of the cap 4 so as to come into pressure contact with the outer peripheral surface thereof, so that the cap 4 and the water supply pipe 6 are joined together. The watertightness between them is secured. Further, even if water leaks from between the inner surface of the bottom wall portion 4a and the outer peripheral surface of the water supply pipe 6, the inner peripheral surface of the support tubular portion 8 and the outer peripheral surface of the base end portion of the water supply pipe 6 may occur. Water leakage to the outside is prevented by the brazing provided between and.

[0025]

According to the water supply tool of the invention of claim 1,
The cap can be easily attached to and detached from the mouth of the water bottle. Further, the mouse or the like does not bite the cap or other members when the water supply tool is used, and normal use is possible for a long period of time. Furthermore, when sterilizing this water supply tool, it becomes possible to use an autoclave as an effective sterilizing means.

According to the water supply device of the second aspect of the present invention, the cap can be attached / removed to / from the mouth portion of the water storage bottle very easily and easily. In particular, this cap is formed on the inner peripheral surface of the cap at regular intervals in the circumferential direction of the female screw ridges that can be engaged with the groove portion of the male screw at the mouth of the water bottle, and on the outer peripheral surface of the cap, the adjacent female screw protrusions are formed. Since protrusions for the handle that extend in the vertical direction are projected between the ridges, when this cap is press-molded, the ridge for internal thread on the inner peripheral surface side and the ridge for handle on the outer peripheral surface side Since they do not overlap with each other, they can be easily formed, and the grip projections can be easily formed.

According to the water supply tool of the third aspect of the present invention, the central opening of the heat-resistant seal packing is pressed against the outer peripheral surface of the water supply pipe base end projecting from the inner surface of the bottom wall of the cap. Since it is fitted in, the watertightness between the inner surface of the bottom wall portion and the outer peripheral surface of the water supply pipe can be secured.
Further, since this packing is locked and fixed from the upper side by the projecting locking pieces at both ends of the locking member having a substantially inverted Ω shape in side view which is elastically engaged in the proximal end of the water supply pipe, It is possible to prevent it from coming out.

According to the water supply tool of the invention of claim 4, the water supply pipe can be firmly fixed to the cap, and the watertightness between the water supply pipe and the cap can be secured. Therefore, even if water leaks from between the inner surface of the bottom wall portion and the outer peripheral surface of the water supply pipe, it is provided between the inner peripheral surface of the support cylinder portion and the outer peripheral surface of the base end portion of the water supply pipe. By brazing, it is possible to prevent leakage of water to the outside.

[Brief description of drawings]

FIG. 1 is a perspective view showing a usage state of a water supply tool according to the present invention.

FIG. 2 is a partial cross-sectional front view of the water supply tool.

FIG. 3 is an exploded view of the water supply tool.

FIG. 4A is a cross-sectional view taken along line XX of FIG. 3, showing the heat-resistant seal packing and the locking member in a removed state,
(B) is a sectional view taken along the line YY of FIG. 3.

FIG. 5 is a perspective view showing a mounting state of the heat resistant seal packing.

FIG. 6 is an enlarged sectional view showing how the water supply pipe is attached to the cap.

[Explanation of symbols]

 1 Water Supply Tool 2 Water Storage Bottle 3 Port 4 Cap 4a Bottom Wall 4b Peripheral Wall 5 Heat Resistant Seal Packing 6 Water Supply Pipe 7 Male Thread for Water Storage Bottle 7a Male Thread Groove 8 Support Tube 9 Cap Female Threaded Protrusion 10 Convex strip for grip 11 Brazing material 12 Locking member 12a Mounting part 12b Locking piece

Claims (4)

[Claims] 1. A metal cap having a cylindrical shape with a bottom is screwed into the mouth of a water bottle made of heat-resistant plastic, and
A heat-resistant seal packing is interposed between the tip surface of the mouth portion and the inner surface of the bottom wall portion of the cap, and the base end portion of the metal water supply pipe is fixedly penetrated through the center of the bottom wall portion of the cap. A water supply tool for breeding laboratory animals. 2. A male thread is continuously formed on the outer peripheral surface of the mouth portion of the water bottle, and an inner peripheral surface of the cap is provided with a female thread ridge capable of engaging with the groove portion of the male thread in the circumferential direction. The water supply for laboratory animal breeding according to claim 1, wherein the cap outer peripheral surface is provided with protrusions for grips that extend in the longitudinal direction between the adjacent protrusions for internal threads. Ingredient 3. The base end portion of the water supply pipe is fixed to the center of the bottom wall portion of the cap so as to protrude from the inner surface of the bottom wall portion by a required height, and has a thickness substantially corresponding to the protrusion height. The heat-resistant seal packing is arranged on the bottom wall of the cap in a state where the central opening of the packing is fitted in pressure contact with the outer peripheral surface of the base end projection of the water supply pipe, and the seal packing is also provided. 3. The experimental animal breeding according to claim 1 or 2, wherein is locked and fixed by means of protruding locking pieces at both ends of a locking member having a substantially inverted Ω shape in side view, which is elastically engaged with the proximal end portion of the water supply pipe. Water supply. 4. A support tube portion is integrally projecting downward from a through hole through which the water supply pipe penetrates at the center of the bottom wall portion of the cap, and the base end portion of the water supply pipe is inserted into the support tube portion. At the same time, the base end portion of the water supply pipe is fixed to the cap by pouring a brazing material into the gap between the inner peripheral surface of the support cylinder portion and the outer peripheral surface of the water supply pipe base end portion to perform brazing. 1
4. A water supply tool for raising experimental animals according to any one of 3 to 3.