JPH09103711A - Sprinkler nozzle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the axial movement of a main body and a head body so that the strength at the time when both bodies undergo relative movement in the axial direction on water shape change and the assembled length becomes longer is not weakened. SOLUTION: There are provided a main body (b), a head body (h) provided on the main body so as to be freely subjected to relative rotation, and a spindle (s) joined by a spline to one of both bodies and joined by a screw to the other thereof. When both bodies (b), (h) are subjected to relative rotation to move the spindle (s), a first channel 16 and a second channel 17 are made to communicate with each other and are opened and closed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sprinkling nozzle capable of changing the water shape when sprinkling water such as direct sunlight or shower.

[0002]

2. Description of the Related Art As a sprinkling nozzle capable of switching between direct and shower water types, a nozzle described in Japanese Utility Model Publication No. 3-37724 has been conventionally known. In this conventional water spray nozzle, the head body and the plunger portion are relatively moved in the axial direction to switch between the direct water type and the shower water type. When the shower water type is used, the combined length of the head body and the plunger portion is the longest, and when the water type is not the shower water type, such as the direct water type, the overall length is shortened.

[0003]

In the conventional water sprinkling nozzle as described above, the total length of the combination of the head body and the plunger portion becomes the longest while maintaining the shower water shape. And usually, this shower water form is most often used. This means that the combination is often used with the total length increased. However, when the total length of the combination is lost, the strength of the combined portion becomes weak. This is because, when the combined total length is long, the overlapping portion between the head body and the plunger portion becomes only a part. Therefore, the strength of the combined portion is insufficient and the nozzle may be broken. Further, if the head body is used in a long state, sand, mud, and the like adhere to a sliding portion between the head body and the plunger portion. If sand or mud is attached to the sliding portion, it becomes difficult to relatively move the head body and the plunger portion. If they are forcibly moved relative to each other, the seal member or the like may be damaged, causing problems such as water leakage.

[0004]

According to a first aspect of the present invention, there is provided a body main body, a head main body rotatably provided on the body main body, and a spline connection to either one of the two main bodies, and the other one. It is equipped with a spindle that is screwed to the side of the main body, and the spindle is configured to move in the axial direction by rotating both main bodies relative to each other. It is characterized in that it is configured. Second
Of the invention, the cylinder is fixed in the body main body, the guide cylinder is fixed in the head main body, the cylinder and the guide cylinder are connected on the same axis, and the first water channel is formed outside the cylinder and the guide cylinder. Then, the second water passage is formed inside the cylinder and the guide cylinder, and a spindle is provided in the cylinder and the guide cylinder to spline-connect the cylinder and the spindle on the body body side with the guide cylinder and the spindle on the head body side. It is characterized in that the screws are connected.

According to a third aspect of the present invention, the first water passage and the second water passage are communicated with each other through the rear end opening portion of the cylinder, and the rear end opening portion of the cylinder and the first flange formed on the spindle are used. One of the features is that the opening and closing mechanism is configured. In a fourth aspect of the present invention, one of the connecting portions of the piston and the guide cylinder has a small diameter and the other has a large diameter, and
A communication passage consisting of a slit or a hole is formed in one of the small diameter portions, and the communication passage and a second flange formed on the spindle constitute a second opening / closing mechanism for opening / closing the second water passage. Have. According to a fifth aspect of the present invention, the spindle is hollow, the inside of which is the first water passage, and the tip portion of the spindle is slidably inserted into a guide cylinder provided in the head main body, while the guide cylinder and the head main body are separated from each other. A second water passage is formed between the guide cylinder and the communication hole formed in the guide cylinder, and the communication hole formed in the spindle constitutes the first opening / closing mechanism, and the plug portion formed in the spindle and the ejection port formed in the head body form the second water passage. The feature is that the opening and closing mechanism is configured.

In the first invention, when the body body and the head body are relatively rotated, the spindle moves in the axial direction,
Opens and closes the waterway opening and closing mechanism. Therefore, the combined state of the body body and the head body does not change. According to the second aspect of the present invention, the cylinder and the guide cylinder are provided in each of the body main body and the head main body, and the spindle is provided therein. Therefore, the first water channel and the second water channel divided into these cylinder and guide tube are provided. be able to. In the third and fourth inventions, the first and second opening / closing mechanisms can be opened and closed by relatively rotating the body body and the head body. In a fifth aspect, the spindle is moved in the axial direction by rotating the body body and the head body relative to each other, and the first and second opening / closing mechanisms are opened / closed.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION A first embodiment shown in FIGS.
A grip portion 1 is provided on the body body b so as to have a pistol shape as a whole. The grip portion 1 is connected to a faucet or the like via a hose connection mechanism (not shown). Therefore, tap water is guided to the supply passage 2 provided in the grip portion 1. A cylinder c having fins 3 formed on the outer side thereof is provided in the body body b as described above.
Is fixed. The fin 3 is, as shown in FIG.
It fits snugly in the body b and at least one of them fits in a groove 28 in the body b. Then, a connection cylinder portion 4 is formed on the rear side of the cylinder c, and the connection cylinder portion 4 is connected to the supply passage 2
It is fitted with the tip opening portion 5 of the. Therefore, the cylinder c is firmly fixed in the body main body b by the fins 3 and the connecting cylinder portion 4. As described above, the cylinder c fixed to the body main body b has its tip portion projected from the body main body b, while the rear end portion and the body main body b are protruded.
A predetermined space 6 is maintained between the rear end and the rear end.

On the rear end side of the cylinder c, as shown in FIG.
As shown in FIG. 6, a large number of slits 7 along the axis are formed in the circumferential direction, and an inclined surface 7a is formed on the base end side thereof.
The rear end of the inclined surface 7a is directed outward as it goes rearward. Further, a large number of slits 8 along the axis are circumferentially formed on the tip end side of the cylinder c, and an inclined surface 8a is formed on the base end side thereof. This inclined surface 8a is
The front end of the inclined surface 8a is directed outward. The head body h is attached to the tip of the body body b as described above. The head body h has the rear end side as the tubular portion 9, and the side opposite to the tubular portion 9 is the enlarged diameter portion 1
It is set to 0. At the front opening portion of the enlarged diameter portion 10,
The shower plate 11 having a large number of small holes is fixed.
The cylindrical portion 9 is rotatably stopped by an E ring 12 on the front side of the body body b. In other words, this tubular portion 9
Is rotatably attached while being prevented from moving in the axial direction by the E ring 12.

A guide cylinder g is fixed to the central portion of the head body h, but as described above, the head body h is provided.
Is attached to the body main body b so that the guide cylinder g fits into the annular convex portion 13 formed at the tip of the cylinder c. By thus fitting the guide cylinder g into the annular protrusion 13 of the cylinder c, the annular protrusion 13
A gap 14 corresponding to the height of is formed between the guide cylinder g and the cylinder c. In the figure, reference numeral 15 is a seal member, which seals the fitting portion between the annular convex portion 13 and the guide cylinder g. By attaching the head main body h to the body main body b as described above, the first water channel 16 and the second water channel 17 are defined in both of them.
That is, the first water channel 16 includes the cylinder c and the guide tube g.
And the second water passage 17 is defined inside the cylinder c and the guide cylinder g.

Further, a spindle s is inserted into the cylinder c, and the spindle s has a first flange 18, a spline key 19, a second flange 20, a screw portion 21 and a tip adjustment from the rear end side. The part 22 is formed. The first flange 18 fits closely to the inner diameter of the cylinder c to maintain the outer diameter slidably supported, and a seal member 23 fitted around the first flange 18 seals between the first flange 18 and the cylinder c. . However, when the seal member 23 is located on the slit 7 side as shown in FIG. 1, the first water channel 16 and the second water channel 17 communicate with each other through the slit 7. The seal member 23 is shown in FIG.
If it enters inside the slit 7 as shown in, the second water channel 17 is closed with respect to the slit 7, so that the communication between the first water channel 16 and the second water channel 17 is cut off. Therefore, the slit 7, the first flange 18, and the seal member 23 together form the first opening / closing mechanism of the present invention. If the sealing member 23 stops in the middle of the inclined surface 7a, the flow path formed by the slit 7 becomes narrow. On the contrary, the sealing member 23 is
If it comes off to the outside of a, the channel becomes wider. Therefore, the flow rate passing therethrough is determined by the position of the seal member 23 with respect to the inclined surface 7a.

As shown in FIG. 4, the spline key 19 meshes with the spline groove 24 formed on the inner surface of the cylinder c, and prevents the spindle s from rotating while keeping it movable in the axial direction. However, as a matter of course, in this state, as shown in FIG. 4, the second water channel 17 is not blocked. The second flange 2 is adjacent to the spline key 19.
0 is formed, and the seal member 25 is fitted around the second flange 20. And the second flange 2
0, the seal member 25, and the slit 8
A second opening / closing mechanism similar to the opening / closing mechanism is configured. That is,
When the second flange 20 is retracted behind the slit 8 as shown in FIG. 1, the second flow path 17 is completely closed. Then, when the second flange 20 moves to the slit 8 position, the slit 8 opens to the second water channel 17. Also at this time, the flow rate flowing therethrough can be adjusted by the relative position of the inclined surface 8a of the slit 8 and the seal member 25.

A screw portion 2 is provided in front of the second flange 20.
1 is formed, the space between the second flange 20 and the screw portion 21 is sufficiently thinned to form the shaft portion 26. The screw portion 21 has a diameter larger than that of the shaft portion 26, and a male screw 21a formed on the outer periphery thereof is engaged with a female screw 27 formed on the inner periphery of the guide cylinder g. Therefore,
When the body body b and the head body h are relatively rotated, the spindle s and the guide cylinder g are relatively rotated. If the spindle s and the guide tube g rotate in this manner, the male screw 2
By the action of 1a and the female screw 27, the spindle s moves in the axial direction in proportion to the rotation amount thereof. Naturally, the moving direction at this time depends on the rotating direction of the head main body h. When the spindle s moves in the axial direction, the first and second opening / closing mechanisms described above open and close. In addition, depending on the amount of movement, the tip adjusting portion 22 is positioned outside the jet port 29 formed in the center of the shower plate 11 as shown in FIG.
As shown in FIG. 2, it is located in the ejection port 29.
Then, in the state of FIG. 1, the first opening / closing mechanism on the rear side is opened and the second opening / closing mechanism on the front side is closed. Further, in the state of FIG. 2, the first opening / closing mechanism on the rear side is closed and the second opening / closing mechanism on the front side is opened. Moreover, no matter how the body main body b and the head main body h are relatively rotated, the spindle s only moves, and the combined length of the two main bodies b and h in the axial direction does not change.

The operation of the first embodiment will be described below. Now, when the spindle s is at the rearmost position shown in FIG. 1, the first opening / closing mechanism on the rear side is opened to the maximum and the second opening / closing mechanism on the front side is opened.
The opening / closing mechanism is completely closed. Therefore, in this case,
The water guided to the supply channel 2 is guided from the second water channel 17 to the first water channel 16 via the slit 7 of the first opening / closing mechanism, and is further discharged via the shower plate 11. The water shape at this time is a shower water shape. Next, from the state of FIG.
When the two main bodies b and h are relatively rotated, the spindle s is gradually advanced. Then, in the forward movement process, since the seal member 23 of the first opening / closing mechanism corresponds to the inclined surface 7a, the flow rate guided from the second water channel 17 to the first water channel 16 decreases. Therefore, the amount of water sprayed from the shower plate 11 is also reduced, and a so-called Jolo water type is formed. Also at this time, the combined length of the body body b and the head body h does not change.

When the spindle s is further advanced, the first opening / closing mechanism on the rear side is completely closed and the second opening / closing mechanism on the front side starts to open. At the beginning of opening, since the seal member 15 and the inclined surface 8a of the slit 8 correspond to each other, the flow rate of water passing through the second opening / closing mechanism also decreases. Moreover, in this state, since the tip adjusting portion 22 is located inside the ejection port 29, the water shape becomes a direct water shape. When the spindle s further advances, the second opening / closing mechanism is fully opened while the first opening / closing mechanism is closed. At this time,
Since the tip adjusting portion 22 completely comes out in front of the ejection port 29, it becomes a diffusion water type. In any case, in the above state,
There is no change in the combined length of the body body b and the head body h. Depending on the moving position of the spindle s, it is possible to maintain the dimensional relationship in which both the first and second opening / closing mechanisms are kept closed. As described above, if the state in which the first and second opening / closing mechanisms are closed is maintained, it is natural that no special water stop mechanism is required.
Further, the relative relationship between the moving position of the spindle s and the water shape or the water amount can be freely set according to the use and purpose, and this first embodiment shows an example thereof.

The second embodiment shown in FIG. 7 is a head body h.
A large diameter tubular portion 30a and a small diameter tubular portion 30b are formed on the rear side, and the small diameter tubular portion 30b located at the rear end is rotatably inserted into the body body b. The ring member 38 prevents the two from coming off in the axial direction. It is to be noted that the shower plate 32 is provided on the enlarged diameter portion 31 of the head body h as in the first embodiment. A female screw 33 is formed on the inner surface of the small-diameter cylindrical portion 30b, and the female screw 33 is engaged with a male screw 34 formed on the outer side of the spindle s. The spindle s has a hollow inside to form a first water channel 35. The rear end of the spindle s is projected toward the body main body b side, and the spline key 36 formed on the protruding end is engaged with the spline groove 37 formed on the body main body b. As a result, the spindle s is supported so as to be movable in the axial direction while being prevented from rotating.

Therefore, the body body b and the head body h
When and are relatively rotated, the spindles s move in the axial direction by the action of the screws 33 and 34. The tip of the spindle s as described above is slidably inserted into the guide cylinder g fixed in the head body h. And this guide cylinder g
A through hole 39 is formed in the shaft s, and a through hole 40 is also formed in the spindle s. Therefore, these holes 3
If 9 and 40 match as shown in the figure, the first water channel 35 communicates with the second water channel 41 formed in the head body h. Then, on the outer periphery of the spindle s in front of the through hole 40,
A pair of seal members 42, 42 are provided. The seal members 42, 42 completely straddle the communication hole 39 depending on the moving position of the spindle s. When the communication hole 39 is straddled in this way, the periphery thereof is sealed and the communication hole 39 and the communication hole 40 are dislocated. Therefore, the communication between the communication hole 39 and the communication hole 40 is blocked, and the communication between the first water channel 35 and the second water channel 41 is also blocked. That is, the communication hole 39, the communication hole 40, and the seal member 4
Together, 2 and 42 constitute the first opening / closing mechanism of the present invention.

An adjusting rod 43 is integrally formed at the tip of the spindle s, and a flow hole 44 is formed around the base end of the adjusting rod 43. The first water channel 35 is a concept including the circulation hole 44. A flange 45 for switching the water shape is formed at the tip of the adjusting rod 43, and a plug portion 46 is formed behind the flange 45. A seal member 47 is fitted around the plug portion 46, and when the plug portion 46 is located at the jet port 48 formed in the central portion of the shower plate 32, as shown in the figure, the seal member 47 is used to spout the jet port. Seal and close 48. That is,
The plug portion 46 and the ejection port 48 together form the second opening / closing mechanism of the present invention. In this state, the communication hole 39 and the communication hole 40 communicate with each other, and the water introduced into the first water channel 35 is guided to the second water channel 41. The diameter of the flange 45 is slightly smaller than that of the ejection port 48,
When the flange 45 is located inside the ejection port 48, a slight gap is maintained between the flange 45 and the ejection port 48.

Therefore, when the plug portion 46 is retracted from the ejection port 48 and the flange 45 is located inside the ejection port 48, the water that has passed through the first water passage 35 is ejected from this slight gap, so-called direct irradiation. The water shape will be maintained. A sliding cylinder 50 is provided in the grip portion 49 of the body body b, and a poppet portion 51 is formed at the tip of the sliding cylinder 50. The poppet portion 51 moves up and down by swinging a lever 52 provided on the body b to open and close the outlet 53. Next, the operation of the second embodiment will be described. When the spindle s is located at the frontmost position, the jet port 48 is closed by the plug portion 46 thereof, and the communication hole 39 and the communication hole 40 are aligned with each other. In this state, if the lever 52 is rotated counterclockwise in the drawing, the outflow port 53 opens, so that the water flows in the first water channel 35 →
It is ejected from a large number of small holes formed in the shower plate 32 via the through hole 40, the communication hole 39, and the second water channel 41. The water shape at this time is a shower water shape.

When the head main body h and the body main body b are slightly rotated in the above state, the spindle s is slightly retracted from the illustrated state. When the spindle s is slightly retracted in this way, the rear sealing member 42 slightly blocks the communication hole 39, so that the flow rate passing therethrough is reduced. Therefore, the water shape in this case is the Jolo water shape. When the spindle s is further retracted, the communication hole 39 is completely sealed by the seal members 42, 42, so that the first water passage 35
And the communication with the second water channel 41 is cut off. At the same time,
Since the plug portion 46 retreats from the ejection port 48, the ejection port 4
8 is fully open. Therefore, the water guided to the first water passage 35 is ejected from the ejection port 48. However, in this case, since the flange 45 approaches the ejection port 48,
The water ejected from the ejection port 48 is diffused by the flange 45 and maintains the diffused water form.

When the spindle s is further retracted, the flange 45 enters the jet outlet 48 while blocking the communication between the first and second water passages 35 and 41. Therefore, water is ejected from the gap between the flange 45 and the ejection port 48 while maintaining the direct water form. In any case, in the case of the second embodiment, only the inner spindle s moves and the head body h and the body body b do not move relative to each other in the axial direction. Therefore, if the strength of the combined portion of the both is maintained sufficiently, the strength of the combined portion will not be weakened during the use process.

[0021]

According to the water sprinkling nozzle of the present invention, by rotating the body main body and the head main body relative to each other, only the spindle in the body main body moves in the axial direction. That is, since the opening / closing mechanism of the water channel can be opened / closed without the two main bodies relatively moving in the axial direction, the assembly length of the two main bodies does not become longer or shorter as in the conventional case. Therefore, in the case of the present invention, the strength of the assembly portion of the body body and the head body can always be kept constant.

[Brief description of the drawings]

FIG. 1 is a sectional view of a first embodiment at the time of a shower water form.

FIG. 2 is a cross-sectional view of a first embodiment of a direct water type.

FIG. 3 is a sectional view taken along the line III-III of FIG. 1;

FIG. 4 is a cross-sectional view showing how the spline key of the spindle is assembled.

5 is an enlarged view of a Y portion of FIG.

FIG. 6 is a perspective view of a Y portion of FIG.

FIG. 7 is a cross-sectional view of a water shower type according to a second embodiment.

[Explanation of symbols]

 b body main body h head main body 7 slit c cylinder g guide cylinder 16,35 first water channel 17,41 second water channel s spindle 20,45 flange

Claims (5)

[Claims] 1. A body main body, a head main body rotatably provided on the body main body, and a spindle which is spline-coupled to either one of the two bodies and screw-coupled to the other side. A water spray nozzle in which the spindle is configured to move in the axial direction by rotating the two bodies relative to each other, and the spindle and the body body or the spindle and the head body are combined to form an opening / closing mechanism for a water channel. 2. A cylinder is fixed in the body main body, a guide cylinder is fixed in the head main body, the cylinder and the guide cylinder are connected on the same axis, and a first water channel is provided outside the cylinder and the guide cylinder. And a second water channel is formed inside the cylinder and the guide cylinder, a spindle is provided in the cylinder and the guide cylinder, and the cylinder and the spindle on the body body side are spline-coupled to each other, and the guide cylinder and the spindle on the head body side are formed. The water sprinkling nozzle according to claim 1, wherein and are screw-connected. 3. The first water passage and the second water passage are communicated with each other through the rear end opening of the cylinder, and the rear end opening of the cylinder and the first flange formed on the spindle form a first opening / closing mechanism. The water spray nozzle according to claim 2, which is configured. 4. One of the connecting portions of the cylinder and the guide cylinder has a small diameter, and the other has a large diameter, and a communicating passage formed of a slit or a hole is formed in one of the small diameter portions. The water spray nozzle according to claim 2 or 3, wherein the communication passage and the second flange formed on the spindle constitute a second opening / closing mechanism for opening / closing the second water passage. 5. A hollow spindle is provided in which the first
A water channel is formed, and the tip of this spindle is slidably inserted into a guide tube provided on the head body, while a second water channel is formed between this guide tube and the head body, and a communication hole and a spindle formed on the guide tube are provided. The sprinkling nozzle according to claim 1, wherein the formed opening forms a first opening / closing mechanism, and the plug opening formed on the spindle and a jet opening formed on the head body form a second opening / closing mechanism.