JP7744820B2 - Pet water dispenser nozzle mechanism - Google Patents

Description

The present invention relates to a nozzle mechanism suitable for pet water dispensers.

Pets (companion animals) need to drink water from time to time. Various water dispensers for this purpose have been put into practical use (see, for example, Patent Document 1 (Figure 2)).

Patent Document 1 will be explained with reference to the following figure.
FIG. 14 is an exploded perspective view of a conventional nozzle mechanism for a water dispenser.
As shown in FIG. 14, the nozzle mechanism 100 for a water dispenser comprises a cap 101, a water stop ball 102, and an O-ring-shaped water stop packing 103.

The cap 101 has a cylindrical portion 105 with a female thread portion 104 at its base, a bottom portion 107 that closes the tip of the cylindrical portion 105 and has an opening 106, and a ring-shaped packing groove 108.

The waterproof packing 103 is fitted into the packing groove 108, and there are two ways to do this:
In the first method, the waterproof packing 103 is inserted into the cap 101 from the female thread portion 104 side.
In the second method, the waterproof packing 103 is inserted into the cap 101 from the opening 106 side.

Since the axial length of the cap 101 is to a certain extent and the waterproof packing 103 gets caught on the female thread portion 104, the fitting operation becomes difficult in the first method.
On the other hand, since the packing groove 108 is located near the opening 106, the fitting operation is easier in the second method.

The procedure for fitting based on the second method will now be described with reference to FIG.
FIG. 15( a ) shows a plan view of the waterproof packing 103 , and FIG. 15( b ) shows a bottom view of the cap 101 .
In the fitting operation, the cap 101 is placed on the work table 111 with the opening 106 facing upward.

As shown in Figure 15(c), the worker pinches the waterproof gasket 103 between the thumb 112 and index finger 113 and shapes it into an oval. The minor axis 114 of the oval should be sufficiently smaller than the diameter of the opening 106. For example, the ratio of the major axis to the minor axis should be approximately 2:1.

In this state, insert the waterproof gasket 103 into the cap 101 through the opening 106 (arrow A), then return it so that the oval becomes a perfect circle (arrow B) after insertion, and fit it into the gasket groove 108.

FIG. 15(d) shows the state after fitting.
It has been found that the cap 101 having the above-described structure has the following drawbacks.
First, as explained in FIG. 15C, the waterproof gasket 103, which is a perfect circle, must be deformed into an ellipse with a major axis:minor axis ratio of about 2:1, which places a heavy burden on the worker.
Secondly, it takes time to return the oval to a perfect circle (arrow B). In other words, the conventional fitting operation takes time.

Thirdly, in Figure 15(d), the hole diameter of the opening 106 and the inner diameter of the watertight gasket 103 are almost the same, making it difficult to visually check the watertight gasket 103. In other words, it is necessary to check that the watertight gasket 103 is in place during finished product inspection, which makes this finished product inspection cumbersome.

A nozzle mechanism that can solve the first to third problems mentioned above is desired.

Utility Model Registration No. 3098579

The objective of this invention is to provide a nozzle mechanism that minimizes deformation of the watertight gasket during the fitting process and allows for easy visual confirmation of the presence or absence of the watertight gasket after fitting.

The invention according to claim 1 is a nozzle mechanism provided at the lower end of a water guide pipe extending downward, the nozzle mechanism comprising a cap, a water stop ball, and a water stop gasket,
The cap includes a cylindrical portion, a bottom portion that closes one end of the cylindrical portion and has an opening with a diameter corresponding to the outer diameter of the waterstop ball, and a packing groove that is provided in the bottom portion so as to surround the opening and into which the waterstop packing is fitted,
When water is not being supplied, a part of the water stop ball is exposed from the opening, but the water stop ball comes into contact with the water stop packing, so that water remains in the water guide pipe,
In the nozzle mechanism for a pet water dispenser, when water is dispensed, the pet pushes up the water stop ball with its tongue, causing the water stop ball to separate from the water stop packing and allowing water to flow out of the water guide pipe,
the cap is made of resin,
The opening is a modified hexagonal socket based on a hexagon having first to sixth sides,
The first side and the fourth side facing the first side are set so that the distance between the first side and the fourth side is smaller than the outer diameter of the water stop ball, and the lengths of the first side and the fourth side are set so that they are smaller than the distance between the first side and the fourth side,
The second side and the sixth side extending from both ends of the first side form an interior angle of 95° to 100° with the first side,
The third side and the fifth side extending from both ends of the fourth side respectively form an interior angle of 95° to 100° with the fourth side;
When an intersection point between the first side and the second side is defined as a first intersection point, and an intersection point between the fourth side and the fifth side is defined as a second intersection point, the distance between the first intersection point and the second intersection point is set to be approximately the same as the outer diameter of the watertight gasket,
The second side and the third side are cut out by a reference circle having a diameter greater than the length of the first side and smaller than the outer diameter of the water stop ball, and the cut-out portions are connected by an arc portion having the same diameter as the reference circle,
the fifth side and the sixth side are also cut out by the reference circle, and the cut-out portions are connected by arc portions having the same diameter as the reference circle,
The first side and the fourth side have a notch-like recess.

The invention according to claim 2 is a nozzle mechanism for a pet water dispenser according to claim 1,
The cap is characterized by being made of a transparent or translucent resin.

The invention according to claim 3 is a nozzle mechanism provided at the lower end of a water guide pipe extending downward, the nozzle mechanism comprising a cap, a water stop ball, and a water stop gasket,
The cap includes a cylindrical portion, a bottom portion that closes one end of the cylindrical portion and has an opening with a diameter corresponding to the outer diameter of the waterstop ball, and a packing groove that is provided in the bottom portion so as to surround the opening and into which the waterstop packing is fitted,
When water is not being supplied, a part of the water stop ball is exposed from the opening, but the water stop ball comes into contact with the water stop packing, so that water remains in the water guide pipe,
In the nozzle mechanism for a pet water dispenser, when water is dispensed, the pet pushes up the water stop ball with its tongue, causing the water stop ball to separate from the water stop packing and allowing water to flow out of the water guide pipe,
The opening portion includes a circular hole portion and at least a pair of notched protrusions formed continuously with the circular hole portion,
The distance between the bottom of one of the protruding portions and the bottom of the other protruding portion is set to be approximately the same as the outer diameter of the watertight packing.

In the invention according to claim 1, the cap is made of resin, so that it can be mass-produced by injection molding using a mold. Resin caps are less expensive than machined metal caps.
In addition, because the opening is a deformed hexagonal hole and the distance between the opposing intersections is set to be approximately the same as the outer diameter of the watertight gasket, the fitting work can be carried out without changing the perfectly circular watertight gasket into an ellipse. As a result, the fitting work can be carried out easily and in a short time.

After fitting, the waterproof gasket can be seen through the four corners of the opening.
Therefore, the present invention provides a nozzle mechanism having a structure that can reduce the amount of deformation of the watertight gasket during the fitting operation and allows easy visual confirmation of the presence or absence of the watertight gasket after fitting.

In addition, in the invention according to claim 1, the second and fourth sides have notched recesses. Bridge portions can be provided on the mold at locations corresponding to these recesses, thereby extending the life of the mold.

In the invention according to claim 2, the cap is transparent or translucent.
Pets lick the water stop ball, which tends to leave food particles on it. This particles gradually stain the inside of the cap. This dirt can lead to the growth of bacteria. Therefore, it is recommended to clean the inside of the cap from time to time.
If the cap is semi-transparent or transparent, the degree of contamination can be observed from the outside, and the cap can be cleaned efficiently.

In the invention of claim 3, the opening consists of a circular hole and at least a pair of notched protrusions formed contiguous to the circular hole. The distance between the bottom of one protrusion and the bottom of the other protrusion is set to be approximately the same as the outer diameter of the watertight gasket, so the fitting process can be performed without significantly changing the circular watertight gasket into an ellipse. As a result, the fitting process can be completed easily and in a short amount of time.

After fitting, the waterproof gasket can be seen through the protruding portion.
Therefore, the present invention provides a nozzle mechanism having a structure that can reduce the amount of deformation of the watertight gasket during the fitting operation and allows easy visual confirmation of the presence or absence of the watertight gasket after fitting.

1 is a perspective view of a pet water dispenser equipped with a nozzle mechanism according to the present invention; FIG. 2 is an exploded perspective view of a nozzle mechanism according to the present invention. FIG. FIG. 10A to 10E are diagrams for explaining the shape of the opening in detail. FIG. 10A and 10B are diagrams illustrating the waterproof packing fitting operation. 10A and 10B are diagrams illustrating the appearance of the waterproof packing while comparing them. FIG. 1 is a schematic diagram of a slide type. This is a cross-sectional view taken along line 10-10 in Figure 9. 10(a) to 10(c) are diagrams illustrating the operation of the slide type. 1A is a perspective view of a second slide mold, and FIG. 1B is a cross-sectional view taken along line bb in FIG. 10A and 10B are diagrams illustrating modified examples of the opening portion. FIG. 10 is an exploded perspective view of a conventional nozzle mechanism for a water dispenser. 10A to 10D are diagrams illustrating a conventional watertight packing fitting operation.

An embodiment of the present invention will be described below with reference to the attached drawings.

As shown in Figure 1, the pet water dispenser (hereafter referred to as the water dispenser) 10 comprises a vertical cylinder 11, an arm 12 extending horizontally from the vertical cylinder 11, a fixing screw member 13 screwed into the tip of the arm 12, a water pipe 14 extending diagonally downward from the vertical cylinder 11, and a pet water dispenser nozzle mechanism (hereafter referred to as the nozzle mechanism) 20 attached to the lower end of the water pipe 14.

A water container 16 is attached to the upper part of the vertical cylinder part 11. This water container 16 may be a tank that is detachable from the vertical cylinder part 11 or that is integrally fixed to the vertical cylinder part 11.
The tip of the arm 12 is placed against the outer surface of the breeding cage 17, and the fixing screw member 13 is screwed in from the inside of the breeding cage 17. In this way, the water supply device 10 is attached to the breeding cage 17.

The water pipe 14 extends obliquely downward from the vertical tube portion 11 , and therefore the nozzle mechanism 20 at the lower end is present inside the breeding cage 17 .
The water conduit 14 may be S-shaped. In addition, when the water container 16 is attached to the inside of the rearing cage 17, the water conduit 14 may extend vertically downward.
Therefore, the water guide pipe 14 may have any shape as long as it extends downward from the vertical tube portion 11 so that water can flow down.

As shown in Figure 2, the nozzle mechanism 20 consists of a cap 21, a water stop ball 22 with an outer diameter Db, a water stop gasket 23 fitted into the cap 21, and a biasing member 24 that presses the water stop ball 22 against the water stop gasket 23. A compression coil spring is preferably used as the biasing member 24.

The water conduit 14 has a male thread 25 at its lower end (tip) and a slot 26 .
The biasing member 24 is provided with a claw 27, and by fitting the claw 27 into the slot 26, the biasing member 24 can be stably attached to the water pipe 14.
After the water stop ball 22 is housed in the cap 21, the cap 21 is screwed onto the male thread portion 25.
As a result, the water stop ball 22 is pressed against the water stop gasket 23 with a predetermined biasing force, and the water stop function is maintained.

The cap 21 has an opening 40, and a part of the water stop ball 22 protrudes (is exposed) from this opening 40. A pet licks the water stop ball 22 with its tongue and presses it. Pressing causes water to flow out from between the water stop ball 22 and the opening 40.
That is, when water is dispensed, the pet pushes up the water stop ball 22 with its tongue, causing the water stop ball 22 to separate from the water stop packing 23 and allowing water to flow out of the water guide pipe 14 .
Furthermore, when water is not being supplied, a portion of the water stop ball 22 is exposed from the opening 40, but the water stop ball 22 comes into contact with the water stop gasket 23, so that water remains in the water guide pipe 14.

The cap 21 may be made of either metal or resin.
When made of resin, any of opaque, semi-transparent, and transparent resins may be used, but semi-transparent and transparent resins are more preferred.

Pets lick the water stop ball 22, so food particles tend to adhere to the water stop ball 22. This particle gradually stains the inside of the cap 21. This stain may lead to the proliferation of bacteria.
Therefore, it is recommended to clean the inside of the cap 21 from time to time.
If the cap 21 is semi-transparent or transparent, the degree of contamination inside the cap 21 can be observed from the outside, and the cap 21 can be cleaned efficiently.

As shown in Figure 3, the cap 21 comprises a tubular portion 29 having a female thread portion 28 at its base, a bottom portion 31 that closes one end (tip) of the tubular portion 29 and has an opening 40 with a diameter corresponding to the outer diameter Db of the water stop ball (Figure 2, symbol 22), and a gasket groove 32 that is provided in the bottom 31 so as to surround the opening 40 and into which the water stop gasket 23 is fitted.
The "diameter corresponding to the outer diameter Db of the water stop ball (Figure 2, symbol 22)" is a hole diameter determined so that a portion of the water stop ball (Figure 2, symbol 22) protrudes from the opening 40 and the remainder remains within the cap 21.

4, the opening 40 provided in the bottom portion 31 of the cap 21 is a non-circular hole. The shape of the opening 40 will be described in detail with reference to FIG.
As shown in FIG. 5A, a hexagon (six-sided shape) is defined, which is made up of a first side 41, a second side 42, a third side 43, a fourth side 44, a fifth side 45, and a sixth side 46 that are connected in a clockwise direction.

This hexagon is not a regular hexagon. That is, the distance d1 between the first side 41 and the fourth side 44 opposite the first side 41 is set to be smaller than the outer diameter of the water stop ball (Figure 2, Db), and the length L1 of the first side 41 and the length L1 of the fourth side 44 are also set to be smaller than the distance d1.

The interior angle θ between the first side 41 and the second side 42 extending from the upper end of the first side 41 is set to 95° to 100°.
Similarly, the interior angle θ formed between the sixth side 46 extending from the lower end of the first side 41 and the first side 41 is set to 95° to 100°, and the interior angle θ formed between the third side 43 and the fifth side 45 extending from both ends of the fourth side 44 and the fourth side 44 is set to 95° to 100°.

When the intersection of the first side 41 and the second side 42 is defined as the first intersection 47, and the intersection of the fourth side 44 and the fifth side 45 is defined as the second intersection 48, the distance d3 between the first intersection 47 and the second intersection 48 is set to be the same as (or approximately the same as) the outer diameter of the watertight gasket (Dp, Figure 7).
"Almost the same" means that the distance d3 is in the range of (outer diameter Dp of the watertight gasket - wire diameter of the watertight gasket) ≤ distance d3 ≤ outer diameter Dp of the watertight gasket. The wire diameter is dp as shown in FIG. 7(a).

Next, as shown in Fig. 5(b), the second side 42 and the third side 43 are cut out along a reference circle 49 having a diameter ds that is greater than the length L1 and smaller than the outer diameter Db of the waterproof gasket. Similarly, the fifth side 45 and the sixth side 46 are cut out along the reference circle 49. The reference circle 49 has the same diameter as the conventional circular opening 106 shown in Fig. 15(b).
Next, as shown in FIG. 5C, the cutout portions are connected by an arc portion 51 having a diameter ds (that is, the same diameter as the reference circle 49).

5D, notched recesses 52 are provided on the first side 41 and the fourth side 44. The depth of the recesses 52 will be described later.
However, in resin molding and machining, it is difficult to form sharp corners where two straight lines intersect, so it is common practice to appropriately round the corners.
As shown in FIG. 5(e), the four corners 53 are rounded appropriately.
As a result of the above, a modified hexagonal hole-shaped opening 40 based on a hexagon is obtained.

As shown in Fig. 6, a modified hexagonal hole-shaped opening 40 is provided in the bottom 31 of the cap 21. The other reference numerals have already been explained in Figs. 5(a) to 5(e), and therefore explanations thereof will be omitted.
The depth of the notched recess 52 is set to 40% to 70% of the depth of the packing groove 32 indicated by the broken line.

Next, the operation of fitting the waterproof packing 23 into the packing groove 32 will be described.
The waterproof gasket 23 shown in FIG. 7(a) has an outer diameter Dp and a wire diameter dp.
The cap 21 shown in Fig. 7(b) is obtained by rotating the cap 21 shown in Fig. 6 clockwise by approximately 45°. The distance between a pair of opposing corners 53 is approximately the same as the distance d3 (the distance d3 between the first intersection 47 and the second intersection 48 in Fig. 5(a)), and is also approximately the same as the outer diameter Dp of the watertight gasket 23.

When the worker pinches the watertight gasket 23 between his thumb and index finger, the perfectly circular watertight gasket 23 becomes slightly oval. Then, insert the watertight gasket 23 into the cap 21 through the opening 40, as shown by arrow (1). After insertion, the slightly oval watertight gasket 23 returns to a perfect circle. This allows the watertight gasket 23 to fit into the gasket groove 32.

That is, the fitting operation of the present invention described in Fig. 7 is easier than the conventional fitting operation described in Fig. 15. Moreover, since the watertight gasket 23 is hardly deformed, the fitting operation takes less time.
Furthermore, depending on the material of the packing, large deformation may cause damage, but even with such a material, the present invention hardly causes deformation of the watertight packing 23, and therefore the watertight packing 23 is not damaged.

Next, the state after the fitting operation will be described with reference to FIG.
As shown in Figure 8(a) , in the cap 21 of the embodiment, the waterproof gasket 23 is visible through the four radii 53 of the opening 40. As a result, the presence or absence of the waterproof gasket 23 can be easily confirmed visually during finished product inspection.

In contrast, in the comparative example cap 101 shown in Figure 8(b), the hole diameter of the opening 106 and the inner diameter of the waterproof gasket 103 are almost the same, making it difficult to see the waterproof gasket 103. Or, the waterproof gasket 103 is barely visible. As a result, it is not easy to check whether the waterproof gasket 103 is present or not when inspecting the finished product.
Since it is difficult to check, the time required for inspecting the finished product is long. In this respect, the time required for inspecting the finished product is shortened in the embodiment.

Next, a mold used when obtaining the cap 21 of the present invention by a resin molding method will be described with reference to FIGS.
As shown in FIG. 9, in order to form the opening 40, a pair of first slide dies 55 and a pair of second slide dies 57 are prepared.

As shown in Figure 10, which is a cross-sectional view taken along line 10-10 in Figure 9, the first slide mold 55 has a hook-shaped portion 58 with a U-shaped cross section at its lower end. A resin cap can be molded by injecting a resin material into the cavity 59, and during this process, the gasket groove 32 and opening 40 are formed by the hook-shaped portion 58.

Since the hook-shaped portion 58 is a so-called underside, the first slide die 55 does not easily come off the resin molded product.
11A, the pair of first sliding dies 55 are moved toward each other (arrow (2)). Next, the pair of first sliding dies 55 are moved in the front-to-back direction of the drawing (arrow (3)).
As a result, only the pair of second slide dies 57 remained as shown in FIG. 11(b).

11C, the pair of second slide dies 57 are moved toward each other (arrow (4)). Next, the pair of second slide dies 57 are moved in the front-to-back direction of the drawing (arrow (5)).
As a result, the first slide die 55 and the second slide die 57 are released from the resin molded product.

In FIG. 9, the first slide die 55 is not restricted in the vertical direction of the drawing, and the hook-shaped portion 58 shown in FIG. 10 can ensure sufficient rigidity.
On the other hand, the second slide die 57 is restricted in the left-right direction in the drawing by the first slide die 55 .

As shown in Fig. 12(b), which is a cross-sectional view taken along line b-b in Fig. 12(a), the thickness t of the hook-shaped portion 58 of the second slide die 57 cannot be increased, which would shorten the life of the second slide die 57.
As a countermeasure, as shown in Fig. 12(a), a bridge portion 61 is provided so as to cross the U-shaped cross section of the hook-shaped portion 58. This bridge portion 61 is formed corresponding to the recess 52 shown in Fig. 6. In other words, the recess 52 is a depression provided for providing the bridge portion 61.
By connecting the bridge portion 61 to the hook portion 58, the rigidity is increased, and the life of the second slide die 57 can be extended.

The above describes the resin cap 21. If injection molding is used, caps 21 can be mass-produced simply by preparing a mold, injection molding equipment, and resin material, and inexpensive caps 21 can be provided.

The cap 21 may be made of metal as well as resin.
In the case of a metal cap 21, the cap 21 can be obtained by cutting a round bar, for example. By using the cutting method, various shapes of the opening 40 can be obtained. Specific examples of various shapes of the opening 40 will be described with reference to FIG. 13 .

As shown in FIG. 13( a ), a round hole 62 having the same diameter as the diameter ds of the reference circle is opened in the bottom portion 31 .
13(b), a part of the round hole 62 is cut out to form a pair of protruding portions 63. The distance d4 between the bottom of one protruding portion 63 and the bottom of the other protruding portion 63 is set to a size equal to (or approximately equal to) the outer diameter Dp of the waterproof gasket 23.
"Approximately equal" means that the distance d4 is in the range of (outer diameter Dp of watertight gasket - wire diameter dp of watertight gasket) ≦ distance d4 ≦ outer diameter Dp of watertight gasket.

The protruding portion 63 is preferably a semicircular protrusion. If the protruding portion 63 is semicircular, the diameter of the semicircle may be slightly larger than the wire diameter (outer diameter) of the waterproof packing 23.
However, the protruding portion 63 may be a U-shaped or V-shaped protrusion with a width larger than the wire diameter (outer diameter) of the waterproof packing 23, and the shape is arbitrary.

With the configuration shown in Figure 13(b), as explained in Figures 7(a) and (b), the fitting of the waterproof gasket 23 is extremely easy, and, as with Figure 8(a), the waterproof gasket 23 can be easily visually inspected through the protruding portion 63.

In the embodiment, two protrusions 63 (one pair) are provided, but four (two pairs) or six (three pairs) may be provided. Therefore, it is sufficient to provide at least one pair of protrusions 63 in the opening 40.

The nozzle mechanism of the present invention is suitable for use in water dispensers for pets.

10... Pet water dispenser (water dispenser), 14... Water pipe, 20... Pet water dispenser nozzle mechanism (nozzle mechanism), 21... Cap, 22... Water stop ball, 23... Water stop gasket, 29... Cylindrical portion, 31... Bottom portion, 32... Gasket groove, 40... Opening, 41... First side, 42... Second side, 43... Third side, 44... Fourth side, 45... Fifth side, 46... Sixth side, 47... First intersection, 48... Second intersection, 4 9...reference circle, 51...arc portion, 52...recess, 53...corner, 62...round hole portion, 63...projection portion, Db...outer diameter of waterstop ball, Dp...outer diameter of waterstop gasket, dp...wire diameter of waterstop gasket, ds...diameter of reference circle, d1...distance between first side and fourth side, d3...distance between first intersection and second intersection, d4...distance between the bottom of one projection and the bottom of the other projection, L1...length of first side (fourth side), θ...interior angle.

Claims (3)

A nozzle mechanism is provided at the lower end of a water guide pipe extending downward, and the nozzle mechanism includes a cap, a water stop ball, and a water stop gasket.
The cap includes a cylindrical portion, a bottom portion that closes one end of the cylindrical portion and has an opening with a diameter corresponding to the outer diameter of the waterstop ball, and a packing groove that is provided in the bottom portion so as to surround the opening and into which the waterstop packing is fitted,
When water is not being supplied, a part of the water stop ball is exposed from the opening, but the water stop ball comes into contact with the water stop packing, so that water remains in the water guide pipe,
In the nozzle mechanism for a pet water dispenser, when water is dispensed, the pet pushes up the water stop ball with its tongue, causing the water stop ball to separate from the water stop packing and allowing water to flow out of the water conduit,
the cap is made of resin,
The opening is a modified hexagonal socket based on a hexagon having first to sixth sides,
The first side and the fourth side facing the first side are set so that the distance between the first side and the fourth side is smaller than the outer diameter of the water stop ball, and the lengths of the first side and the fourth side are set so that they are smaller than the distance between the first side and the fourth side,
The second side and the sixth side extending from both ends of the first side form an interior angle of 95° to 100° with the first side,
The third side and the fifth side extending from both ends of the fourth side respectively form an interior angle of 95° to 100° with the fourth side;
When an intersection point between the first side and the second side is defined as a first intersection point, and an intersection point between the fourth side and the fifth side is defined as a second intersection point, the distance between the first intersection point and the second intersection point is set to be approximately the same as the outer diameter of the watertight gasket,
The second side and the third side are cut out by a reference circle having a diameter greater than the length of the first side and smaller than the outer diameter of the water stop ball, and the cut-out portions are connected by an arc portion having the same diameter as the reference circle,
the fifth side and the sixth side are also cut out by the reference circle, and the cut-out portions are connected by arc portions having the same diameter as the reference circle,
A nozzle mechanism for a pet water dispenser, wherein the first side and the fourth side have notched recesses. 2. The nozzle mechanism for a pet water dispenser according to claim 1,
A nozzle mechanism for a pet water dispenser, wherein the cap is made of a transparent or translucent resin. A nozzle mechanism is provided at the lower end of a water guide pipe extending downward, and the nozzle mechanism includes a cap, a water stop ball, and a water stop gasket.
The cap includes a cylindrical portion, a bottom portion that closes one end of the cylindrical portion and has an opening with a diameter corresponding to the outer diameter of the waterstop ball, and a packing groove that is provided in the bottom portion so as to surround the opening and into which the waterstop packing is fitted,
When water is not being supplied, a part of the water stop ball is exposed from the opening, but the water stop ball comes into contact with the water stop packing, so that water remains in the water guide pipe,
In the nozzle mechanism for a pet water dispenser, when water is dispensed, the pet pushes up the water stop ball with its tongue, causing the water stop ball to separate from the water stop packing and allowing water to flow out of the water guide pipe,
The opening portion includes a circular hole portion and at least a pair of notched protrusions formed continuously with the circular hole portion,
A nozzle mechanism for a pet water dispenser, characterized in that the distance between the bottom of one protruding portion and the bottom of the other protruding portion is set to be approximately the same as the outer diameter of the water stop packing.