JP4185440B2 - shower head - Google Patents

Description

The present invention relates to a shower head used in a shower such as a bathroom or a wash basin. Specifically, the discharge pressure of hot water can be adjusted at hand, and the structure is simple and easy to manufacture and attach. The present invention relates to a shower head that can finely adjust the discharge pressure of hot water when using a shower.

The shower head is an instrument used for a shower such as a bathroom or a wash basin. For example, a shower head main body composed of a hollow body having an internal space serving as a hot water flow path, such as the shower head 1 shown in FIG. 3 and a nozzle 5 disposed at one end of the shower head body 3 and having a number of discharge holes 6 for discharging hot water. Such a shower head 1 is connected to a hot water supply source such as a water supply or a water heater via a connection joint 7, a shower hose 9, a switching valve 11, a water supply valve 13 (including a hot water supply valve), and a supply pipe 15. It is common to be used.

Conventionally, as a method of adjusting the pressure or amount of hot water discharged from the nozzle 5 of the shower head 1 (hereinafter referred to as “hot water discharge pressure” or “hot water discharge amount”), a method of adjusting by opening and closing the water supply valve 13 is used. However, in such a method, the user of the shower has to reach to the water supply valve 13 away from the shower head 1 each time the hot water discharge pressure or the hot water discharge amount is adjusted. There was a problem that the adjustment operation was troublesome and the usability was bad.

Therefore, in order to solve the problems as described above, an adjusting means for adjusting the hot water discharge pressure and the hot water discharge amount is formed in the shower head 1 itself (or in the connecting portion between the shower head 1 and the shower hose 9). Technology has been proposed.

Specifically, in addition to a shower device (for example, refer to Patent Document 1) that adjusts the hot water discharge amount by an electrical signal from an operation switch that serves as an adjusting means, a shower water amount regulator (for example, a hot water discharge amount that is adjusted by an operation lever) Patent Document 2) and a shower head (for example, refer to Patent Document 3) that adjusts the hot water discharge amount using a spool valve, and a technique for adjusting the hot water discharge amount using mechanical adjusting means that does not use an electrical signal has already been used. It is disclosed.
JP-A-5-300845 Japanese Utility Model Publication No. 6-14263 Japanese Utility Model Publication No. 7-541

However, these techniques have the following problems, although it is possible to adjust the hot water discharge pressure and the hot water discharge amount at hand.

That is, the shower device described in Patent Document 1 requires electric parts such as operation switches and electric wiring, and the structure of the shower head is complicated, so that there is a problem that its manufacture and installation are troublesome. there were.

In addition, the shower water amount regulator described in Patent Document 2 or the shower head described in Patent Document 3 has a simple structure as compared with the shower device described in Patent Document 1, and therefore, its manufacture. Although there is an advantage that the mounting is relatively easy, there is a problem that it is difficult to make a fine adjustment such as adjusting the discharge amount of hot water to a desired amount.

This is because it is unexpectedly difficult to move the operation lever and spool valve to the desired position with one hand, in addition to having to remove the finger from the shower head to move the operation lever and spool valve. In particular, it has become a particularly serious problem in barbers and hair salons that perform hair washing as a service. This is because barbers and beauty salons are required to promptly perform delicate adjustments of hot water discharge pressure and hot water discharge amount depending on the hair washing site or according to the customer's request.

As explained above, although there are conventional shower heads etc. that can adjust the hot water discharge pressure and hot water discharge amount at hand, fine adjustment of the hot water discharge pressure and hot water discharge amount is possible when using the shower. In terms of the effect of being able to do it, it was not fully satisfactory. That is, a shower head that has an effect of enabling fine adjustment of the hot water discharge pressure and the hot water discharge amount at the time of shower use has not yet been disclosed, and shower users, particularly barbers and beauty salons. From such a shower head was eagerly desired.

The present invention has been made in view of the above-described problems of the prior art, and of course the adjustment of the hot water discharge pressure can be performed at hand, and its structure is simple and easy to manufacture and attach. Thus, it is an object of the present invention to provide a shower head that has an advantageous effect compared with the conventional one, in that it is possible to finely adjust the hot water discharge pressure even when using the shower.

As a result of earnest research to solve the above-mentioned problems, the present inventor formed a pressing portion made of a flexible material on at least a part of the shower head main body, and increased or decreased the gripping force applied to the pressing portion. The present invention has been completed by conceiving that the above problem can be solved by adopting a structure that can increase or decrease the cross-sectional area of the internal space of the hollow body constituting the head body. That is, the present invention provides the following shower head.

[ 1 ] A shower head body composed of a hollow body having an internal space serving as a hot water flow path, and a plurality of discharge holes for discharging hot water disposed at one end of the shower head body. A shower head comprising a nozzle, wherein the nozzle is made of a first elastic material , and among the plurality of discharge holes, the discharge holes arranged in the outer peripheral portion of the nozzle have a flat opening. A discharge hole (small discharge hole) whose opening area is smaller than a discharge hole (flat discharge hole) and / or a discharge hole (general discharge hole) disposed in the central portion of the nozzle, A flexible portion made of a second elastic material is formed in at least a part continuous with the nozzle, and when a gripping force is applied to the flexible portion, the nozzle is elastically deformed so that a central portion of the nozzle swells, The flat discharge hole and / or The small discharge hole is configured to block the opening part or reduce the opening area, and the total opening of the large number of discharge holes by increasing or decreasing the gripping force applied to the flexible part. The shower head comprised so that the pressure (hot water discharge pressure) of the hot water discharged from the said nozzle could be adjusted by increasing / decreasing an area.

[ 2 ] The shower head main body has a pressing portion made of a flexible material at least in part, and the internal space of the hollow body constituting the shower head main body by increasing or decreasing the gripping force applied to the pressing portion. The shower head according to [ 1 ], wherein the hot water discharge pressure can be adjusted by increasing or decreasing the cross sectional area of the shower head.

[ 3 ] The shower according to [1] or [2] , wherein the hollow body constituting the shower head body is a hollow cylindrical body, and the nozzle is disposed at one end of the hollow cylindrical body. head.

The shower head of the present invention can adjust the hot water discharge pressure at hand, and its structure is simple and easy to manufacture and attach, and the hot water discharge pressure is delicately adjusted even when using the shower. Can be performed.

Hereinafter, although the best form for implementing the shower head of this invention is concretely demonstrated using drawing, the shower head of this invention is not limited to these embodiment.

(1) Reference embodiment:
Prior to describing the shower head of the present invention , the reference embodiment will be specifically described with reference to an example of the shower head 21 shown in FIG. In the reference embodiment , the shower head main body 3 has a pressing portion 3a made of a flexible material at least in part, and the shower head main body 3 is changed by increasing or decreasing the gripping force F applied to the pressing portion 3a. The pressure of the hot water discharged from the nozzle 5 (hot water discharge pressure) can be adjusted by increasing or decreasing the cross-sectional area of the internal space of the hollow body to be configured.

In the reference embodiment , since the pressing portion 3a of the shower head main body 3 is made of a flexible material, when the gripping force F applied to the pressing portion 3a is increased or decreased, the hollow body that configures the shower head main body 3 accordingly. Increasing or decreasing the cross-sectional area of the internal space (in this specification, the cross-sectional area of the internal space of the hollow body in the cross-section orthogonal to the flowing direction of hot water (hereinafter referred to as “flow-path cross-sectional area”)) Can do.

If the inflow pressure of hot water into the shower head is kept equal, the hot water discharge pressure will rise if the flow path cross-sectional area is reduced, and conversely the hot water discharge pressure will fall if it is returned to the original state. The hot and cold water discharge pressure can be adjusted by increasing or decreasing the gripping force F applied to the pressing portion 3a. Further, when the gripping force F applied to the pressing portion 3a is increased and the flow passage cross-sectional area is brought close to zero (that is, when the flow passage is brought close to a closed state), the inflow pressure of hot water into the shower head itself decreases. It is also possible to reduce the hot water discharge pressure to a level lower than the initial discharge pressure.

In the reference embodiment , the pressing portion 3a needs to be made of a flexible material (for example, a vulcanized rubber, a thermoplastic elastomer, an elastic foam, or the like) in order to ensure the function of increasing or decreasing the flow path cross-sectional area. There is. Moreover, since the press part 3a is a part of the shower head main body 3, the material which comprises this also provided the property (for example, heat resistance, corrosion resistance, water impermeability, etc.) required for the product itself called a shower head. A material is preferred. That is, as a flexible material constituting the pressing portion 3a, in addition to having an appropriate flexibility, it is preferable to have heat resistance, corrosion resistance, water impermeability, and the like. Can be suitably used.

As the degree of flexibility of the pressing part 3a, it is difficult to expand (expand) depending on the internal pressure received from the hot water flowing through the internal space of the hollow body constituting the shower body 3, but easily deforms when the gripping force F is applied, It is preferable to have flexibility that can increase or decrease the cross-sectional area of the channel. The degree of flexibility can be adjusted to a desired level by selecting an appropriate material from various flexible materials having different degrees of flexibility, or by appropriately adjusting the thickness of the pressing portion 3a. it can.

The formation position of the pressing portion 3a is not particularly limited as long as the cross-sectional area of the internal space of the hollow body constituting the shower head body 3 can be increased or decreased by increasing or decreasing the grip force F to be applied. In the case of the shower head 21 having a shape as shown in FIG. 2A, it is preferably formed on the front side of the shower head body 3. Since the front side of the shower head body 3 is a portion where the thumb hits when gripping the shower, there is an advantage that the grip force F can be easily applied to the pressing portion 3a.

Further, for example, it is also one of preferred embodiments that the pressing portion 3a is continuously formed so as to go around the outer peripheral surface of the shower head main body 3 as in the shower head 31 shown in FIG. In such an aspect, since the gripping force F can be applied from all directions of the outer peripheral surface of the shower head main body 3, the amount of deformation of the pressing portion 3a (that is, the width of increase / decrease in the flow path cross-sectional area) can be increased. There is an advantage that the discharge pressure can be adjusted in a wider range.

In the reference embodiment , the shower head main body 3 only needs to have the pressing portion 3a in “at least a part” thereof. However, in the reference embodiment , the shower head main body 3 has a pressing portion 3a in a part thereof, such as the shower heads 21 and 31 shown in FIG. In which all of this is a pressing portion made of a flexible material (not shown).

In the reference embodiment , the shower head body 3 (portion other than the pressing portion 3a) and the nozzle 5 are materials having properties (for example, heat resistance, corrosion resistance, water impermeability, etc.) required for the shower head product itself. It is preferable that it is comprised. Specifically, with respect to the shower head main body 3 (portion other than the pressing portion 3a), a hard heat-resistant resin (for example, heat-resistant ABS (acrylonitrile-butadiene-styrene) resin), nozzle 5 Is preferably made of the above heat-resistant resin or metal (for example, stainless steel).

Although there is no restriction | limiting in particular about the whole shape of the nozzle 5, as long as it has many discharge holes 6 for discharging the hot water supplied from the hot water supply source, A desired shape can be employ | adopted. For example, as shown in FIG. 2A, a circular plate-like body having a large number of discharge holes 6 can be suitably used. The shape and number of the opening portions of the discharge holes 6 are not particularly limited as long as an appropriate amount of hot water and water can be discharged from the nozzle 5, and the shape of the opening portions is generally a circular shape. What is necessary is just to determine the number of the discharge holes 6 suitably according to the area of the nozzle 5, etc. FIG.

(2) Characteristic configuration of the present invention :
The shower head of the present invention will be specifically described with reference to the example of the shower head 41 shown in FIGS. 3 (a) to 3 (c). In the shower head of the present invention , the nozzle 5 is made of a first elastic material , and among the many discharge holes 6, the discharge holes arranged in the outer peripheral portion of the nozzle 5 are the discharge holes having a flat opening. (Flat discharge hole 6b), and a flexible portion 3b made of a second elastic material is formed at least at a part continuous with the nozzle 5 of the shower head body 3, and a gripping force F is applied to the flexible portion 3b. Is added to the flexible part 3b so that the central part of the nozzle 5 is elastically deformed so as to bulge and the flat discharge hole 6b is closed or the opening area thereof is reduced. The pressure of the hot water discharged from the nozzle 5 (hot water discharge pressure) can be adjusted by increasing / decreasing the total opening area of the large number of discharge holes 6 by increasing / decreasing the gripping force F.

In the shower head of the present invention, since the flexible part 3b of the nozzle 5 and the shower head main body 3 is made of an elastic material, when a gripping force F is applied to the flexible part 3b, FIGS. As shown in c), the gripping force F is transmitted to the nozzle 5 and elastically deforms so that the central portion of the nozzle 5 swells, so that the flat discharge hole 6b is closed or its opening area is reduced. To do. Therefore, when the gripping force F applied to the flexible portion 3b is increased or decreased, the total opening area of the numerous discharge holes 6 of the nozzle 5 can be increased or decreased accordingly.

When the inflow pressure of hot water into the shower head is kept equal, the hot water discharge pressure increases if the total opening area of the many discharge holes 6 of the nozzle 5 is decreased, and can be returned to the original state. Since the hot water discharge pressure decreases, the hot water discharge pressure can be adjusted by increasing or decreasing the gripping force F applied to the flexible portion 3b. Further, the gripping force F applied to the pressing portion 3a is increased so that the total opening area of the many discharge holes 6 of the nozzle 5 approaches zero (that is, all the opening parts of the many discharge holes 6 approach a closed state). In such a case, since the inflow pressure of hot water into the shower head itself decreases, the hot water discharge pressure can be lowered to a level lower than the initial discharge pressure.

In addition, such an effect has the effect that the discharge hole arranged in the outer peripheral portion of the nozzle 5 has a smaller opening area than the very general discharge hole (general discharge hole) arranged in the central portion of the nozzle. It can also be obtained by using a discharge hole (not shown). That is, such a mode is also included in the shower head of the present invention .

In the shower head of the present invention , the nozzle 5 is an elastic material (for example, vulcanized rubber, thermoplastic elastomer, elastic foam) in order to ensure the function of causing “elastic deformation such that the central portion swells”. Etc.) (hereinafter, the elastic material constituting the nozzle is referred to as “first elastic material”). In this respect, the nozzle 5 is different from the shower head of the reference embodiment in which the nozzle 5 may be made of a hard material such as a heat resistant resin or metal.

In addition, since the nozzle 5 is a part of the shower head 1, the material constituting the nozzle 5 is a material having properties (for example, heat resistance, corrosion resistance, water impermeability, etc.) required for the shower head product itself. Preferably there is. That is, the first elastic material constituting the nozzle 5 preferably has heat resistance, corrosion resistance, water impermeability, etc., in addition to having moderate elasticity, specifically, silicone rubber or the like. Can be suitably used.

The degree of elasticity of the nozzle 5 is that the gripping force applied to the flexible portion 3b of the shower head body 3 does not expand (expand) depending on the internal pressure received from the hot water flowing through the internal space of the hollow body constituting the shower body 3 When F is transmitted, it is preferable to have elasticity that can easily be elastically deformed so that the central portion of the nozzle 5 swells. The degree of elasticity can be adjusted to a desired level by selecting an appropriate material from various elastic materials having different degrees of elasticity or by appropriately adjusting the thickness of the nozzle 5.

The overall shape of the nozzle 5 is not particularly limited as long as it has a large number of discharge holes 6 for discharging hot water supplied from a hot water supply source, and a desired shape can be adopted. For example, as shown in FIG. 3A, a circular plate-like body having a large number of discharge holes 6 can be suitably used.

However, in the shower head of the present invention , the nozzle 5 is arranged on the outer peripheral portion of the nozzle 5 among the large number of discharge holes 6 in order to ensure the function of increasing or decreasing the total opening area of the large number of discharge holes 6. It is necessary that the discharge hole has a flat discharge hole 6b and / or a small discharge hole. In this respect, the shape of the discharge hole 6 is different from that of the shower head of the reference embodiment without any limitation.

The flat discharge hole 6b has a shape that is easy to crush and close as compared to a non-flat discharge hole (for example, a circular shape), and therefore when the elastic deformation is performed so that the central portion of the nozzle 5 swells. The discharge hole is easily blocked or the opening area is reduced. Therefore, even when the gripping force F applied to the flexible part 3b is small, there is an advantage that the total opening area of the many discharge holes 6 can be increased or decreased more effectively. For this reason, it is more preferable to employ the flat discharge hole 6b as the discharge hole arranged in the outer peripheral portion of the nozzle 5 in the shower head of the present invention .

In the present specification, the term “flat shape” means a shape in which the inner diameter of the opening portion of the discharge hole 6 is not uniform but has a major axis and a minor axis. Specifically, FIG. As shown in FIGS. 5A to 5F, an elliptical shape (FIG. 5A), a rectangular shape (FIG. 5B), an oval shape (FIG. 5C), and a spindle shape (FIG. 5 (d)), ridge shape (FIG. 5 (e)), crescent moon shape (FIG. 5 (f)), and the like. In particular, both ends E in the longitudinal direction such as a spindle shape, a saddle shape, a crescent shape, etc. are acute-angled in that it is easier to close the discharge hole or reduce the opening area. Is preferred.

The degree of flatness is not particularly limited, but the dimensional ratio of the major axis to the minor axis (usually referred to as “aspect ratio”) is generally 1.5 or more, and is 1.7 or more. Is preferably 4.0 or more, more preferably 5.5 or more. For example, the elliptical shape shown in FIG. 5 (a), the spindle shape shown in FIG. 5 (d), and the bowl shape shown in FIG. 5 (e) all have an aspect ratio of 1.7, as shown in FIG. 5 (b). The aspect ratio of the rectangular shape is 4.0, and the aspect ratio of the oval shape shown in FIG. 5C is 5.75.

Further, the flat discharge holes 6b and / or the small discharge holes need to be arranged on the outer periphery of the nozzle 5. This is because the outer peripheral portion of the nozzle 5 has a larger amount of elastic deformation than the central portion of the nozzle 5, and therefore it is very easy to close the discharge hole 6 or reduce the opening area.

In this case, it is also a preferable aspect that the flat discharge hole 6 b is curved along the outer peripheral shape of the nozzle 5. For example, the flat discharge hole 6b of the shower head 41 shown in FIG. 3A is formed along the outer peripheral shape of the circular nozzle 5 with the flat discharge port 6b shown in FIG. This is a curved shape (see FIG. 5G). According to such an aspect, when the nozzle 5 is elastically deformed, it is possible to prevent a phenomenon that the flat discharge hole 6b is distorted to hinder complete blockage of the discharge hole 6, and the discharge hole 6 can be more reliably formed. It is possible to block or reduce the aperture area.

In the shower head of the present invention, it is necessary that the flat discharge hole 6 b is disposed on the outer peripheral portion of the nozzle 5 . Then, usually, for the central portion of the nozzle 5, as shown in FIG. 3 (a), placing a general discharge hole 6a of the non-flat shape (e.g., circular ones). Thereby, even when all of the flat discharge holes 6b are completely closed, it is possible to ensure a minimum required amount of hot water discharge.

Further, in the shower head of the present invention , the shower head main body 3 transmits the applied gripping force F to the nozzle 5 and ensures the function of inducing elastic deformation such that the central portion of the nozzle 5 swells. At least a part thereof needs to be formed with a flexible portion 3b made of an elastic material (eg, vulcanized rubber, thermoplastic elastomer, elastic foam, etc.) (hereinafter referred to as elasticity constituting the flexible portion). The material is referred to as “second elastic material”).

Since the flexible part 3b is a part of the shower head body 3, the material constituting the flexible part 3b also has properties (for example, heat resistance, corrosion resistance, water impermeability, etc.) required for the shower head product itself. A material is preferred. That is, the second elastic material constituting the flexible portion 3b preferably has heat resistance, corrosion resistance, water impermeability and the like in addition to having appropriate elasticity. Rubber or the like can be suitably used.

Furthermore, the flexible portion 3 b needs to be formed in a portion continuous with the nozzle 5 of the shower head body 3 in order to ensure the function of reliably transmitting the applied gripping force F to the nozzle 5. For example, in the shower head 41 shown in FIGS. 3A to 3C, the flexible portion 3 b is formed in a portion continuous with the nozzle 5 of the shower head main body 3, and the other portion is formed as a non-flexible portion 3 c. However, in the case of a shower head having a configuration in which the positions of the flexible portion 3b and the non-flexible portion 3c are interchanged (not shown), the transmission of the grip force applied to the flexible portion is non-flexible. In this case, the elastic deformation of the expected nozzle may not be obtained because it is cut off at this point and is not transmitted to the nozzle.

The degree of elasticity of the flexible portion 3b does not expand (expand) depending on the internal pressure received from the hot water flowing through the internal space of the hollow body constituting the shower main body 3, but easily bends when the gripping force F is applied, It is necessary for the gripping force F to be elastic enough to be transmitted to the nozzle 5. More specifically, when the elasticity of the flexible portion 3b is low and too soft, the gripping force F applied to the flexible portion 3b is absorbed by that portion and may not be transmitted to the nozzle 5. In this respect, it is different from the shower head according to the reference embodiment in which the pressing portion needs to have flexibility enough to increase or decrease the flow path cross-sectional area. The degree of elasticity can be adjusted to a desired level by selecting an appropriate material from various elastic materials having different degrees of elasticity or by appropriately adjusting the thickness of the flexible portion 3b.

The position where the flexible portion 3b is formed is not particularly limited as long as it is continuous with the nozzle 5, but for example, as shown in FIG. It is preferable to form the flexible part 3b continuously. In such an aspect, since the grip force F can be applied from all directions of the outer peripheral surface of the shower head body 3, the amount of deformation of the flexible portion 3b (that is, the range of increase / decrease in the bending force transmitted to the nozzle 5) is increased. be able to. Therefore, there is an advantage that it is possible to adjust the degree of blockage of the flat discharge hole 6b or the reduction of the opening area (and hence the hot water discharge pressure) in a wider range.

In addition, in the shower head of this invention , the shower head main body 3 should just have the flexible part 3b in the "at least one part". Therefore, in the shower head of the present invention , as shown in FIG. 3 (b), the shower head main body 3 has a flexible part 3b in part, and the shower head main body is entirely made of the second elastic material. The thing which becomes the comprised flexible part is also included (not shown).

In addition, when the shower head main body 3 has a flexible portion 3b and a non-flexible portion 3c as shown in FIG. 3B, the non-flexible portion 3c is a property required for the product itself called a shower head. It is preferably made of a material having (for example, heat resistance, corrosion resistance, water impermeability, etc.). Specifically, it is preferably made of a hard heat resistant resin (for example, a heat resistant ABS resin).

Furthermore, combining the embodiment of the showerhead of the present invention with the reference embodiment is preferable in that the effects of both embodiments can be enjoyed. That is, the nozzle is made of the first elastic material, and the discharge hole arranged in the outer peripheral portion of the nozzle among the plurality of discharge holes is a flat discharge hole, and the second is formed at least partially continuous with the nozzle of the shower head body. While forming the flexible part comprised with the elastic material, it is preferable to form the press part comprised with the flexible material in at least one part of the shower head main body (not shown).

In the above case, the flexible portion and the pressing portion of the shower head main body do not necessarily have to be configured as separate and independent members. In other words, by configuring all or part of the shower head body with a material that has both elasticity and flexibility, such as silicone rubber, it is possible to have both the functions of the flexible part and the pressing part in the part. It is.

(3) Other configurations :
In the shower head of the present invention, the shape of the shower head main body is not particularly limited as long as it is composed of a hollow body having an internal space serving as a hot water channel. Therefore, a desired shape can be adopted, but for example, a shape such as a cylindrical shape or an elliptical cylinder shape that is easy to grip and is familiar to the hand is preferable. Such a shape has an advantage that it is easy to apply a gripping force to the pressing portion or the flexible portion, and even when a shower is used for a long time, the hand is hard to get tired.

Moreover, in the shower head of this invention, as shown to Fig.3 (a)-FIG.3 (c), the hollow body which comprises the shower head main body 3 is a hollow cylindrical body, and one of the hollow cylindrical bodies is shown. It is preferable that the nozzle 5 is disposed at the end. Such a shape is compact and excellent in operability, and can be particularly suitably used as a shower head for a hair-washing shower in a barber or beauty salon. In the present specification, the term “cylindrical body” means a cylindrical body having a circular cross-sectional shape, and its outer diameter is continuous as in the shower head body 3 shown in FIG. Or it shall include those that are changing intermittently.

Furthermore, in the shower head of the present invention, a nozzle is arranged at one end (tip) of the shower head body, but a connecting portion with a shower hose may be arranged at the other end (terminal). It is common. The connecting portion may have any structure as long as the shower head and the shower hose can be connected in a watertight manner. For example, what formed the thread groove (or screw thread) in the outer peripheral surface (or inner peripheral surface) of a shower head main body can be used as a connection part.

According to such a connecting portion, for example, as shown in FIGS. 2A and 2B, the inner peripheral surface (or outer peripheral surface) of the connecting joint 7 disposed at the tip of the shower hose 9 is A thread (or thread) complementary to the thread (or thread) is formed, and the thread (or thread) of the shower head body 3 and the thread (or thread) of the connection joint 7 are screwed. By combining, the shower heads 21 and 31 and the shower hose 9 can be connected in a watertight manner. The connecting portion having such a structure has been conventionally used in commercially available shower heads and shower hoses, and is preferable in terms of excellent compatibility with them.

The shower heads 21, 31, and 41 shown in FIGS. 2 (a), 2 (b), and 3 (a) to 3 (c) are members in which the shower head body 3 and the nozzle 5 are independent and independent. The shower head of the present invention is not limited to such a structure, and the shower head body and the nozzle are integrally formed of the same material. It is good (not shown).

(4) Effects of the present invention :
The above-described shower head of the present invention can adjust the hot water discharge pressure at hand, as well as mechanical parts such as operation levers and spool valves, as well as electrical parts such as operation switches and electrical wiring. No adjustment means is required, and the showerhead structure is simple and easy to manufacture. In addition, there is no need for electrical connection or the like when mounting, and it can be connected to a shower hose by screwing it into a connection joint, as with a commercially available shower head. Excellent compatibility with the head and high versatility.

Furthermore, the hot water discharge pressure can be adjusted only by increasing or decreasing the gripping force applied to the pressing part or the flexible part while holding the shower head (that is, without releasing the finger from the shower head). Subtle adjustments can be made according to the sense of the fingertips, and the hot water discharge pressure can be adjusted to a desired amount very easily even when using a shower (for example, during shampooing). Therefore, it can be particularly suitably used as a shower head for a hair-washing shower in a barber shop or beauty salon where quick adjustment of hot water discharge pressure is required.

The shower head of the present invention is suitably used as a shower head for showers in bathrooms, washstands, etc., particularly for showers for hair washing in barbers and beauty salons.

FIG. 1 is an explanatory view showing an embodiment of a conventional shower head. FIG. 2A and FIG. 2B are explanatory views showing a reference embodiment of a shower head . 3 (a) to 3 (c) are explanatory views showing an embodiment of the shower head of the present invention, FIG. 3 (a) is a front view, FIG. 3 (b) is a side view, and FIG. (C) is AA 'sectional drawing (side sectional drawing) of Fig.3 (a). 4 (a) to 4 (c) are explanatory views showing the form of the shower head of the present invention shown in FIGS. 3 (a) to 3 (c) when used, and FIG. 4 (a) is a front view. FIG. 4B is a side view, and FIG. 4C is an AA ′ sectional view (side sectional view) of FIG. Fig.5 (a)-FIG.5 (g) are explanatory drawings which show embodiment of the flat discharge hole in the shower head of this invention.

Explanation of symbols

1, 21, 31, 41 ... Shower head, 3 ... Shower head body, 3a ... Pressing part, 3b ... Flexible part, 3c ... Non-flexible part, 5 ... Nozzle, 6 ... Discharge hole, 6a ... General discharge hole, 6b ... flat discharge hole, 7 ... connection joint, 9 ... shower hose, 11 ... switching valve, 13 ... water supply valve, 15 ... supply pipe, F ... grip force.

Claims (3)

A shower head body composed of a hollow body having an internal space serving as a flow path of hot water, and a nozzle having a large number of discharge holes for discharging hot water disposed at one end of the shower head body. A shower head provided,
The nozzle is made of a first elastic material , and among the plurality of discharge holes, the discharge holes arranged on the outer peripheral portion of the nozzle have a flat discharge hole (flat discharge hole) and / or Or the discharge hole (small discharge hole) whose opening area is smaller than the discharge hole (general discharge hole) disposed in the central portion of the nozzle, and the shower head main body is at least partially connected to the nozzle. When a flexible part made of the elastic material is formed and a gripping force is applied to the flexible part, the flexible part is elastically deformed so that the central part of the nozzle swells, and the flat discharge hole and / or the small discharge hole The opening is closed or the opening area is reduced, and the total opening area of the plurality of discharge holes is increased or decreased by increasing or decreasing the gripping force applied to the flexible part. Is discharged from the nozzle. Configuration shower head so as to adjust the hot water pressure (hot water discharge pressure). The shower head body has a pressing portion made of a flexible material at least in part, and the cross-sectional area of the internal space of the hollow body constituting the shower head body by increasing or decreasing the gripping force applied to the pressing portion The shower head according to claim 1 , wherein the shower water discharge pressure is adjusted by increasing or decreasing the pressure. The shower head according to claim 1 or 2 , wherein the hollow body constituting the shower head body is a hollow cylindrical body, and the nozzle is disposed at one end of the hollow cylindrical body.

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