Non-electrical driven dental hygiene pulsating sprayer

A dental hygiene pulsating sprayer has a handle and a pulsating engine having a turbine rotor. The handle is adapted to connect to a water source. The turbine rotor is rotatably received in the pulsating engine and has a curved wall, a top cover and multiple extension blades. The top cover is attached to the curved wall to construct a circle in cooperation with the curved wall. The extension blades are formed on and extend radically from the top cover and the outer periphery of the curved wall. Accordingly, the sprayer can provide a pulsating massage effect and is not driven by electrical power.

BACKGROUND OF THE INVENTION

1. Field of Invention

The present invention relates to a sprayer, and more particularly to a dental hygiene pulsating sprayer that can provide a pulsating massage effect and is not driven by electrical power.

2. Description of the Related Art

To clean teeth, a toothbrush is always used with toothpaste. However, the conventional toothbrush is inconvenient in use, and the user, especially a child, cannot sufficiently clean teeth with a conventional toothbrush. Therefore, an oral irrigator is provided to spray water for cleaning teeth of a user. A conventional oral irrigator substantially comprises a handle with a head and a pump. The head is mounted on one end of the handle. The handle is connected at its other end to a water source through a hose. The pump is used to pump the water to spray out from the head of the handle, and the sprayed water can be used to efficiently clean teeth of a user.

However, the conventional oral irrigator needs electrical power to drive the pump to work, so a high cost is involved in using the conventional oral irrigator. That is, the special miniature motor required is costly, as are the batteries required to drive the motor.

To overcome the shortcomings, the present invention provides a dental hygiene sprayer functioning as a plumbing fixture or as a portable device to mitigate or obviate the aforementioned.

SUMMARY OF THE INVENTION

The main objective of the invention is to provide a dental hygiene pulsating sprayer that can provide a pulsating massage effect and is not driven by electrical power. The dental hygiene pulsating sprayer has a handle and a pulsating engine having a turbine rotor. The handle is adapted to connect to a water source. The turbine rotor is rotatably received in the pulsating engine and has a curved wall, a top cover and multiple extension blades. The top cover is attached to the curved wall to construct a circle to in cooperation with the curved wall. The extension blades are formed on and extend radically from the top cover and the outer periphery of the curved wall. Accordingly, the turbine rotor can be driven to rotate when water impacts on the extension blades of the turbine rotor, and the water stream will be interrupted by the turbine rotor. Consequently, a pulsating water stream is generated, and a pulsating massage effect is provided.

DETAILED DESCRIPTION OF THE INVENTION

With references toFIGS. 1 and 2, in a first embodiment of a dental hygiene pulsating sprayer in accordance with the present invention comprises a handle (10), a pulsating engine (20) and a spraying head (30). The handle (10) has an inlet end, an outlet end, a first passage and an outer thread (12). The first passage extends through the handle (10) from the inlet end to the outlet end. The outer thread (12) is formed on the outlet end. The inlet end is connected to a water source through a hose (15).

The pulsating engine (20) is connected to the outlet end of the handle (10) and has a turbine rotor (22), a baffle (24), at least one inclined bore (26) and a cap (28). With further reference toFIG. 3, the turbine rotor (22) is rotatably received in the pulsating engine (20) and has a curved wall (222), multiple first extension blades (224), a top cover (226) and multiple second extension blades (228). The curved wall (222) has an outer periphery, and the first extension blades (224) are formed on and extend radially from the outer periphery of the curved wall (222). The top cover (226) is integrally formed with the curved wall (222) to construct a circle in cooperation with the curved wall (222). The second extension blades (228) are radially formed on the top cover (226) and correspond to the first extension blades (224) on the curved wall (222).

With further reference toFIG. 4, the baffle (24) is formed at the entrance of the pulsating engine (20) near the outlet end of the handle (10) so as to define a chamber (14) in the outlet end of the handle (10). At least one inclined bore (26) is defined through the baffle (24) and communicates the chamber (14) with the first passage. The cap (28) is attached to the outlet end of the handle (10) to close the chamber (14). The cap (28) has at least one through hole (282), a connecting tube (284) and an inner thread (286). The inner thread (286) is screwed with the outer thread (12) on the handle (10) to attach the cap (28) to the handle (10). The through holes (282) are defined through the cap (28) and communicate with the chamber (14). The connecting tube (284) extends from the cap (28) and encloses the through holes (282).

In a preferred embodiment, the through holes (282) are arranged in a half portion (50%) of the cap (28), and the top cover (226) has an area half of the whole circle (50%) constructed by the top cover (226) and the curved wall (22). To effectively generate a pulsating stream, the ratio of the top cover (226) to the circle constructed by the top cover (226) in cooperation with the curved wall (222) is equal to, or greater than the ratio of total distributed area of the through holes (282) to area of the cap (28). The through holes are arranged within a portion of the cap that is fully coverable by the top cover. Accordingly, the ratio of total distributed area of the through holes (282) to the whole area of the cap (28) can be further adjusted to perform different patterns of pulsating stream. In addition, when total occupied area of the through holes (282) increases, the turbine rotor (22) will rotate more slowly so as to reduce the pulsating frequency of water stream. Accordingly, manipulation of total occupied area of the through holes (282) can adjust the pulsating frequency of water stream.

The spraying head (30) is attached to the cap (28) of the pulsating engine (20). The spraying head (30) is L-shaped and has a proximal end, a distal end and a second passage. The second passage is defined through the spraying head (30) from the proximal end to the distal end. The proximal end is mounted onto the connecting tube (284) on the cap (28) to attach the spraying head (30) to the cap (28), such that the second passage in the spraying head (30) communicates with the pulsating engine (20).

With further reference toFIGS. 5 and 6, the sprayer is connected to a water tap through the hose (15) and can be mounted on a washbasin or attached on a wall as a spray head operating in a shower area. When a user turns on the water tap, the water will flow into the first passage in the handle (10) through the hose (15) and flow into the chamber (14) through at least one inclined bore (26). Water will spray out from the spraying head (30) through the through holes (282) in the cap (28) and the second passage in the spraying head (30) for cleaning teeth of the user. When water passes through the inclined bore (26), the inclined bore (26) makes water impact on the blades of the turbine rotor (22) so as to rotate the turbine rotor (22) in the chamber (14). Accordingly, the water stream passing through the chamber (14) will be interrupted by the top cover (226) when the turbine rotor (22) rotates, such that a pulsating stream is generated. Consequently, the discharged water from the spraying head (30) can provide a pulsating massage effect to the gum of the user when the user cleans teeth with the sprayer.

Because the sprayer is connected to a water system in a house and the turbine rotor (22) is driven by the water pressure, electrical power is not needed for the operation of the sprayer. To use the pulsating sprayer is convenient, safe and involves a low cost.

With reference toFIG. 7, in a second embodiment of a sprayer in accordance with the present invention, the sprayer comprises a handle (10a) and a pulsating engine (20a). The handle (10a) has an outlet end, an inlet end and a first passage and is connected to a water source through a hose. The pulsating engine (20a) is connected to the outlet end of the handle (10a) and has a turbine rotor (22a), a baffle (24a), at least one inclined bore (26a) and a cap (28a). The turbine rotor (22a) is rotatably received in the pulsating engine (20a) and has a structure same as that of the turbine rotor (22) of the first embodiment as shown inFIG. 1. The baffle (24a) is formed at the entrance of the pulsating engine (20a) in the outlet end of the handle (10a) so as to define a chamber (14a) in the pulsating engine (20a). The cap (28a) is attached to the handle (10) to close the chamber (14a), and the cap (28a) has at least one through hole (282a) communicating with the chamber (14a). At least one inclined bore (26a) is defined through the baffle (24a) and communicates with the chamber (14a). In use, the sprayer can be connected to a water tap as the first embodiment.

With reference toFIGS. 8 and 9, in a third embodiment of a sprayer in accordance with the present invention, the sprayer comprises a handle (10b) and a pulsating engine (20b). The handle (10b) has a L-shaped outlet end, an inlet end and a first passage and is connected to a water source through a hose. The pulsating engine (20b) is connected to the outlet end of the handle (10b) and has a turbine rotor (22b), a baffle (24b), at least one inclined bore (26b) and a cap (28b). The turbine rotor (22b) is rotatably received in the pulsating engine (20b) and has a structure same as that of the turbine rotor (22) of the first embodiment as shown inFIG. 1. The baffle (24b) is formed at the entrance of the pulsating engine (20b) in the outlet end of the handle (10b) so as to define a chamber (14b) in the pulsating engine (20b). The cap (28b) is attached to the handle (10b) to close the chamber (14b), and the cap (28b) has at least one through hole (282b) communicating with the chamber (14b). At least one inclined bore (26b) is defined through the baffle (24b) and communicates with the chamber (14b). In use, the sprayer can be connected to a water tap as the first embodiment.

When the user turns on the water tap, the water will flow into the chamber (14b) through at least one inclined bore (26b) and will spray out from the through holes (282b) in the cap (28b). When water passes through the chamber (14b), the water will impact on the blades of the turbine rotor (22b) so as to rotate the turbine rotor (22b) in the chamber (14b) so as to make a pulsating stream.

With reference toFIG. 10, in a fourth embodiment of a sprayer in accordance with the present invention, the handle (10c) has a closed outlet end. The pulsating engine (20c) is connected to the outlet end of the handle (10c) and has a turbine rotor (22c), a baffle (24c), at least one inclined bore (26c) and a cap (28c). The turbine rotor (22c) is rotatably received in the pulsating engine (20c) and has a structure same as that of the turbine rotor (22) of the first embodiment as shown inFIG. 1. The baffle (24c) is formed at the entrance of the pulsating engine in outlet end the handle (10c) so as to define a chamber (14c) in the pulsating engine (20c). At least one inclined bore (26c) is defined through the baffle (24c) to communicate with the chamber (14c). The cap (28c) is attached to the handle (10c) to close the chamber (14c), and the cap (28c) has at least one through hole (282c) communicating with the chamber (14c) and a tube (284c). The tube (284c) extends from the cap (28c) and communicates with the through holes (282c).

With reference toFIG. 11, in a fifth embodiment of a sprayer in accordance with the present invention, the handle (10d) has a closed outlet end. The pulsating engine (20d) is connected to the outlet end of the handle (10c) and has a turbine rotor (22d), a baffle (24d), at least one inclined bore (26d) and a cap (28d). The turbine rotor (22d) is rotatably received in the pulsating engine (20d) and has a structure same as that of the turbine rotor (22) as shown in the first embodiment inFIG. 1. The baffle (24d) is formed at the entrance of the pulsating engine (20d) in the outlet end the handle (10d) so as to define a chamber (14d) in the pulsating engine (20d). At least one inclined bore (26d) is defined through the baffle (24d) to communicate with the chamber (14d). The cap (28d) is attached to the handle (10d) to close the chamber (14d) and has at least one through hole (282d) communicating with the chamber (14d) and two tubes (284d). The through holes (282d) are arranged on the opposite side of the circle respectively in two groups to deliver pulsating stream alternatively. The tubes (284d) are mounted on and extend from the cap (28d), and the tubes (284d) respectively communicate with the two groups of the through holes (282d). In a preferred embodiment, each tube (284d) is L-shaped and has an opening facing each other. Accordingly, the water spraying out from the openings of the tubes (284d) can conveniently clean both sides of teeth of the user.

With reference toFIGS. 12 and 13, in a sixth embodiment of a sprayer in accordance with the present invention, the sprayer further comprises a plunger (40e). The plunger (40) is inserted into the handle (10e) from the inlet end of the handle (10e). In such an arrangement, water is poured into the passage in the handle (10e), and the plunger (40e) is inserted into the handle (10e). The water in the handle (10e) will be forced into the chamber (14e) to drive the turbine rotor (22e) rotation when the plunger (40e) is pushed into the handle (10e), and the water will discharge from the spraying head (30e) with a pulsating effect provided by the turbine rotor (22e). Thus, the device is portable and convenient for use away from home.

With reference toFIG. 14, in a seventh embodiment of a sprayer in accordance with the present invention, the handle (10f) of the sprayer can be a tubular body formed as a sucking tube. In operation of the embodiment, the handle (10f) is put into a cup containing water. The user keeps the pulsating engine (20f) in mouth and sucks water through passage in the handle (10f). The pulsating stream will alternatively spray out from the tubes mounted on the cap of the pulsating engine (20f) for cleaning both sides of teeth of the user with a pulsating massage effect provided by the turbine rotor. Thus, the device is portable and convenient for use away from home.

With reference toFIG. 15, in an eighth embodiment of a sprayer in accordance with the present invention, the handle (10g) of the sprayer can be a squeezing bag filled with water. In operation of the embodiment, the water in the handle (10g) will be forced into the chamber (14g) to drive the turbine rotor (22g) rotation when the user squeezes the handle (10g), and the water will discharge from the spraying head (30g) with a pulsating effect provided by the turbine rotor (22g). Thus, the device is portable and convenient for use away from home.

With reference toFIG. 16, in a ninth embodiment of a sprayer in accordance with the present invention, the pulsating engine (20h) has a turbine rotor (22h), a baffle (24h), at least one bore (26h) and a cap (28h). The turbine rotor (22h) is rotatably received in the pulsating engine (20h) and has a curved wall (222h), multiple first extension blades (224h), a top cover (226h) and multiple second extension blades (228h). The extension blades of the turbine rotor (22h) extend obliquely from the top cover (226h) and the outer periphery of the curved wall (222h) and are inclined toward the direction of water stream.