Intelligent bathtub with adjustable cleaning spray head and adjusting method thereof
Technical Field
The invention belongs to the technical field of intelligent bathtubs, and particularly relates to an intelligent bathtub with adjustable cleaning nozzles and an adjusting method thereof.
Background
A bathtub is a plumbing fixture for bathing or showering, typically in a residential bathroom. Modern bathtubs are mostly made of acrylic or glass fiber, and also made of steel coated with ceramic, in recent years, wooden bathtubs are increasingly popular in China, and are mainly made of cedar in Sichuan as a base material, so that the bathtub is also called a cedar barrel, and old western bathtubs are usually made of steel or iron subjected to rust prevention treatment. Since most of bathtubs have a rectangular shape, various shapes of bathtubs have been developed in recent years due to the increasing popularity of sub-force heating bathtubs. The most common color of the bathtub is white, other hues such as pink and the like exist, the bottoms of most bathtubs are provided with water removal levels, the upper parts of the bathtubs are provided with water removal levels for preventing full discharge, water throats are arranged at the edge positions of the bathtubs, with the development of science and technology, intelligent household equipment is rapidly popularized to thousands of households, the living environment of people is greatly improved, the living experience of people is improved, the bathtub is used as bathing household equipment, people can relieve fatigue, relax nerves and relax the mind, the warm comfort of family life is improved, with the development of bathroom technology, the existing intelligent bathtub can assist people in water filling, water draining and other operations, and meanwhile, the massage bathtub also has the function of assisting in adjusting the water filling temperature of the bathtub, people need to purchase, and go to light in decoration bathroom equipment stores, and do not see the bathtub in electric appliance sales places, actually, the massage bathtub is different from a common bathtub, namely a household appliance, a luxury electrical appliance, the massage bathtub mainly comprises two main parts, namely a bathtub body and a massage system, the bathtub body part does not have bathtubs with various shapes, the materials are mostly steel or acrylic, the massage system comprises a nozzle visible in the bathtub, a pipeline hidden behind the bathtub, a motor, a control box and the like, the massage system is the key point for purchasing the massage bathtub and is also the part which is rarely recognized by a common person for the massage bathtub, the bathtub is filled with water with the temperature of 36 ℃, water-soluble bath oil with the relaxation effect can be added to strengthen the hydraulic massage effect, the air massage system is started to run for 3 minutes, bubbles coming out from the bottom relax muscle tissues, and elasticity is added for the skin.
Smart home equipment has popularized millions of households rapidly, people's living environment has greatly been improved, people's life experience has been promoted, the bathtub is as a bath home equipment, can let people alleviate fatigue, relax nerve and relax the mind and body, promote the graceful comfort of family life, along with the development of bathroom technique, smart bathtub can assist people to fill water, operations such as heat preservation and drainage, can also reduce people through the reservation function and wait to fill the water time, greatly make things convenient for people's use, therefore smart bathtub has seized consumption market fast, traditional bathtub has been replaced.
For example, the Chinese patent document 'a massage bathtub and a massage nozzle thereof' is a patent number (CN201310298781.2) which solves the problems of small massage force and single massage effect of the prior massage bathtub, lacks the aim of multi-directional adjustment of the cleaning nozzle, when the intelligent bathtub is used, the water pressure is sprayed out to massage the human body only by a negative pressure natural air suction mode, and the human body is brought into the water only by a negative pressure vacuum area generated by high-speed water flow, so the mode is passive, the massage effect is poor, meanwhile, when the cleaning spray head of the intelligent bathtub is used, the adjusting effect is poor, the single spray head is held by the channel in hand to wash the bathtub in multiple directions, certain waste of water resources is caused, the cleaning effect cannot be ensured, the bathtub cannot be cleaned in a multi-directional and synchronous spraying mode, therefore, an intelligent bathtub with adjustable cleaning nozzles and an adjusting method thereof are needed to solve the problems.
Disclosure of Invention
Technical problem to be solved
In order to overcome the defects of the prior art, the invention provides an intelligent bathtub with adjustable cleaning nozzles and an adjusting method thereof, and solves the problems that a single nozzle is held by a channel by hand, the bathtub is flushed in multiple directions, certain waste of water resources is caused, the cleaning effect cannot be ensured, and the bathtub cannot be cleaned in a multi-direction and synchronous spraying manner.
(II) technical scheme
In order to achieve the purpose, the invention provides the following technical scheme: an intelligent bathtub with an adjustable cleaning nozzle comprises a cylinder body, wherein a water permeable box is arranged on the left side of the lower surface of the inner wall of the cylinder body, the upper surface of the water permeable box is fixedly connected with the lower surface of a back cushion, a water outlet assembly is clamped in the middle of the lower surface of the inner wall of the cylinder body, the lower surface of the water outlet assembly is communicated with the top end of a one-way valve pipe, the left end of the one-way valve pipe is communicated with the right end of a water inlet pipe, the other end of the water inlet pipe is communicated with a driving assembly, the right side surface of the driving assembly is fixedly connected with the left side surface of the cylinder body, the input end of the driving assembly is communicated with the bottom end of a water inlet pipe, the water inlet pipe penetrates through the top of the cylinder body and the water permeable box and extends to the bottom of the inner wall of the water permeable box, the right end of the one-way valve pipe is communicated with the left end of an air inlet pipe, and the right end of the air inlet pipe penetrates through the cylinder body and is communicated with the left side of the air inlet assembly, the left surface of the air inlet assembly is fixedly connected with the right side surface of the cylinder body, the top end of the air inlet assembly is communicated with the water inlet port and the right end of the branch pipe, and four anti-seismic bases are arranged on the lower surface of the cylinder body.
The left end of the branch pipe is communicated with the right end of the connecting assembly through a flexible hose, the bottom end of the connecting assembly is communicated with the upper surfaces of the two water spraying assemblies, the front and the back of each water spraying assembly are provided with a sliding block which is connected in a sliding groove in a sliding way, the sliding groove is arranged on the front surface of the inner wall of the cylinder body, the opposite surfaces of the two sliding blocks are respectively clamped with a rotating assembly, one end of the rotating assembly is hinged with one end of each water spraying assembly through a pin shaft, one side of the lower surface of each water spraying assembly is fixedly connected with the front surface of a connecting block through a spring, the upper surface of the connecting block is fixedly connected with the lower surface of the sliding block, one end of each two water spraying assemblies which are close to each other is fixedly connected with the same adjusting assembly, the adjusting assembly comprises a reinforcing rib, the two ends of the reinforcing rib are fixedly connected with one end of each two water spraying assemblies which are close to each other, and the outer wall of the reinforcing rib is clamped with a handle, the lower surface of the inner wall of the cylinder body is provided with a plurality of massage rollers, and the front side and the rear side of the upper surface of the cylinder body are provided with push handles.
As a further scheme of the invention: go out the water subassembly and include out the water tray, go out the water tray joint in the bottom of cylinder body inner wall, the equal fixedly connected with dog in the left and right sides of water tray lower surface, the equal joint of two dogs is at the lower surface of cylinder body inner wall, the inlet tube joint is on left dog.
As a further scheme of the invention: the drive assembly comprises a water pump, the right side face of the water pump is fixedly connected with the left side face of the cylinder body, the input end of the water pump is communicated with one end of the water inlet pipe, the output end of the water pump is respectively communicated with the water inlet pipe and the connecting pipe, and a valve is arranged on the outer wall of the connecting pipe.
As a further scheme of the invention: the air inlet assembly comprises an air pump, the left side face of the air pump is fixedly connected with the right side face of the cylinder body, two output ends of the air pump are respectively communicated with one end of the air inlet pipe and one end of the guide pipe, a valve is arranged on the outer wall of the guide pipe, and the top of the guide pipe is communicated with the water inlet port and the right end of the branch pipe.
As a further scheme of the invention: the outer wall of the water permeable box is hollowed out, a plurality of drain holes are formed in the inner wall of the cylinder body corresponding to the slide grooves, and the slide blocks and the slide grooves are designed in a T shape.
As a further scheme of the invention: coupling assembling includes the siphunculus, the right-hand member of siphunculus communicates with the left end of bellows, the outer wall symmetry of siphunculus is provided with the honeycomb duct, and the bottom of two honeycomb ducts is linked together with the upper surface of two water spray assembly respectively.
As a further scheme of the invention: the water spraying assembly comprises a spraying pipe, the upper surface of the spraying pipe is communicated with the bottom end of the flow guide pipe, a plurality of spray heads are arranged on the lower surface of the spraying pipe, and one ends, far away from each other, of the two spraying pipes are hinged to one ends, close to each other, of the two rotating assemblies respectively through pin shafts.
As a further scheme of the invention: the rotating assembly comprises a bearing, the bearing is clamped on the front face of the sliding block, a rotating shaft is sleeved in the bearing, and one end of the front face of the rotating shaft is hinged to the back face of the spraying pipe through a pin shaft.
As a further scheme of the invention: the utility model discloses a cylinder body, including cylinder body, inner wall, electromagnetic transceiver probe, electromagnetic wave generator, supporting plate, heating element, electromagnetic transceiver probe, electromagnetic wave generator, the equal fixedly connected with layer board in the below at the front of cylinder body and the back, the bottom of cylinder body is provided with the drain valve, the right side of cylinder body inner wall is provided with the support.
An adjusting method of an intelligent bathtub with adjustable cleaning nozzles comprises the following steps:
s1, when the nozzle needs to be adjusted, the water inlet interface can be connected with a water source, water can flow into the telescopic hose through the branch pipe under the pressure of water flow, the air pump works at the same time, the valve on the guide pipe is opened, so that air enters the branch pipe through the guide pipe, and under the action of external air pressure, the air is brought into the air channel of the telescopic hose to be mixed with the water and is finally sprayed out of the nozzle through the spray pipe.
S2, when the water spray work is finished, the handle is held to the accessible, two spray tubes are adjusted, because the handle links to each other with two spray tubes through the powerful muscle, the pulling handle can drive two spray tubes and move left, make shower nozzle spun water effectively wash away the cylinder body inner wall, two sliders slide in two spouts at the in-process that the spray tube removed, carry out spacingly to two spray tubes, push down the handle in-process, because the spray tube is articulated through the round pin axle with the pivot, make the handle drive the spray tube through the powerful muscle and overturn downwards, adjust the position of shower nozzle and make it be close to the cylinder body inner wall, increase water pressure impact force.
S3, when the handle is loosened, the spray pipes are supported through the elasticity of the two springs, so that the two spray pipes can rotate to the initial position, the spray heads can be held to turn over laterally when being adjusted, the spray pipes can turn over laterally due to the fact that the rotating shafts are sleeved in the bearings, the cylinder body is cleaned in multiple directions, and related personnel can pull the handle to drive the spray pipes to move due to the fact that the telescopic hoses can stretch freely.
S4, when the cylinder body is used, the water pump and the air pump can be controlled to work simultaneously, the water pump can pump water from the cylinder body, so that water enters the water outlet tray through the water inlet pipe, air generated by the work of the air pump enters the water outlet tray through the air inlet pipe, so that air is mixed with the water and is sprayed out of the water outlet tray simultaneously, the spraying force is increased, the human body is massaged, the electromagnetic wave generator works, the electromagnetic receiving and sending probe receives and sends electromagnetic waves, and the magnetic therapy massage is carried out on the human body.
(III) advantageous effects
Compared with the prior art, the invention has the beneficial effects that:
1. in the invention, the water inlet port is communicated with a water source by controlling the operation of the air pump, water can flow into the telescopic hose through the branch pipe by water flow pressure, the valve on the pipe is opened, gas can enter the branch pipe through the pipe, air is brought into the air channel of the telescopic hose under the action of external air pressure to be mixed with water and is finally sprayed out from the spray nozzle through the spray nozzle, the two spray nozzles are adjusted by holding the handle, the handle is pulled to drive the two spray nozzles to move leftwards, so that the water sprayed out from the spray nozzle can effectively wash the inner wall of the cylinder body, in the process of pressing down the handle, the spray nozzle is hinged with the rotating shaft through the pin shaft, so that the handle drives the spray nozzle to turn downwards through the strong ribs, the position of the spray nozzle is adjusted to be close to the inner wall of the cylinder body, the water pressure impact force is increased, when the spray nozzle is continuously adjusted, the holding handle can turn sideways, and the rotating shaft is sleeved in the bearing, but make the spray tube side direction upset, carry out diversified clearance to the cylinder body, compare in traditional mode, the purpose that the mode that this scheme effectively realized diversely and sprayed in step carries out the clearance to the cylinder body improves when saving the water resource and erodees the effect.
2. According to the intelligent bathtub, the water pump and the air pump are controlled to work simultaneously, so that water enters the water outlet tray through the water inlet pipe, air generated by the work of the air pump enters the water outlet tray through the air inlet pipe, the air is mixed with the water and is sprayed out of the water outlet tray simultaneously, the spraying force of the water is increased, a human body is massaged, passive air entering is changed into active air entering, and therefore the massage effect is further improved.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic sectional view of the cylinder body of the present invention;
FIG. 3 is a schematic perspective sectional view of the cylinder according to the present invention;
FIG. 4 is a schematic perspective view of a slider according to the present invention;
FIG. 5 is a schematic perspective view of the sprinkler assembly of the present invention;
FIG. 6 is an enlarged schematic view of the structure of the present invention at A;
FIG. 7 is a schematic three-dimensional structure of a water outlet assembly according to the present invention;
FIG. 8 is a schematic perspective sectional view of the permeable box of the present invention;
in the figure: 1. a cylinder body; 2. a water permeable box; 3. back cushion; 4. a water outlet assembly; 41. a water outlet tray; 42. a stopper; 5. a check valve tube; 6. a water inlet pipe; 7. a drive assembly; 71. a water pump; 72. a connecting pipe; 8. a water inlet pipe; 9. a shock-resistant base; 10. an air inlet pipe; 11. an air intake assembly; 111. an air pump; 112. a conduit; 12. A water inlet interface; 13. a branch pipe; 14. a flexible hose; 15. a connection assembly; 151. pipe passing; 152. a flow guide pipe; 16. a water spray assembly; 161. a nozzle; 162. a spray head; 17. a slider; 18. a chute; 19. a drain hole; 20. a rotating assembly; 201. a bearing; 202. a rotating shaft; 21. connecting blocks; 22. a spring; 23. An adjustment assembly; 231. a handle; 232. a reinforcing rib; 24. a massage roller; 25. a push handle; 26. a heating assembly; 27. an electromagnetic transmitting-receiving probe; 28. an electromagnetic wave generator; 29. a support plate; 30. a support; 31. and (4) draining the water valve.
Detailed Description
The technical solution of the present patent will be described in further detail with reference to the following embodiments.
As shown in fig. 1 to 8, the present invention provides a technical solution: an intelligent bathtub with an adjustable cleaning nozzle comprises a cylinder body 1, wherein a water permeable box 2 is arranged on the left side of the lower surface of the inner wall of the cylinder body 1, the upper surface of the water permeable box 2 is fixedly connected with the lower surface of a back cushion 3, a water outlet assembly 4 is clamped in the middle of the lower surface of the inner wall of the cylinder body 1, the lower surface of the water outlet assembly 4 is communicated with the top end of a one-way valve pipe 5, the left end of the one-way valve pipe 5 is communicated with the right end of a water inlet pipe 6, the other end of the water inlet pipe 6 is communicated with a driving assembly 7, the right side surface of the driving assembly 7 is fixedly connected with the left side surface of the cylinder body 1, the input end of the driving assembly 7 is communicated with the bottom end of a water inlet pipe 8, the water inlet pipe 8 penetrates through the tops of the cylinder body 1 and the water permeable box 2 and extends to the bottom of the inner wall of the water permeable box 2, the right end of the one-way valve pipe 5 is communicated with the left end of a gas inlet pipe 10, through the one-way valve pipe 5, the backflow situation of the one-way valve pipe 5 is avoided, thereby improve the stability that changes intelligent bathtub operation, the right-hand member of intake pipe 10 passes cylinder body 1 and is linked together with the left side of air admission subassembly 11, and the left surface of air admission subassembly 11 and the right flank fixed connection of cylinder body 1, the top of air admission subassembly 11 and the right-hand member of intaking interface 12 and branch pipe 13 are linked together, and the lower surface of cylinder body 1 is provided with four antidetonation bases 9.
The left end of the branch pipe 13 is communicated with the right end of the connecting component 15 through the telescopic hose 14, the bottom end of the connecting component 15 is communicated with the upper surfaces of the two water spraying components 16, the front and rear parts of the water spraying components 16 are respectively provided with a sliding block 17, the sliding blocks 17 are connected in a sliding groove 18 in a sliding way, the two spraying pipes 161 are adjusted through a holding handle 231, the two spraying pipes 161 can be driven to move leftwards by pulling the handle 231, the sliding blocks 17 and the sliding grooves 18 are in a T-shaped design, the moving stability of the spraying pipes 161 is improved, water sprayed by the spraying heads 162 can effectively wash the inner wall of the cylinder body 1, the cylinder body 1 is cleaned in a multidirectional and synchronous spraying mode, the sliding grooves 18 are arranged on the front surface of the inner wall of the cylinder body 1, the rotating components 20 are clamped on the opposite surfaces of the two sliding blocks 17, and one end of the rotating components 20 is hinged with one end of the water spraying components 16 through a pin shaft, spring 22 and connecting block 21's positive fixed connection is passed through to one side of water spray subassembly 16 lower surface, connecting block 21's upper surface and slider 17's lower fixed surface are connected, it sets up spring 22 to lead to, drive two spray tube 161 upsets behind the push down handle 231, the supporting role through spring 22 can make two spray tube 161 resets after loosening handle 231, make spray tube 161 be in the horizontality all the time, be favorable to the cleaning work to cylinder body 1, the same adjusting part 23 of the one end fixedly connected with that two water spray subassemblies 16 are close to each other, adjusting part 23 includes powerful muscle 232, the both ends of powerful muscle 232 and the one end fixed connection that two water spray subassemblies 16 are close to each other, the outer wall joint of powerful muscle 232 has handle 231, the lower surface of the 1 inner wall of cylinder body is provided with a plurality of massage roller 24, both sides all are provided with the push away handle 25 around the 1 upper surface of cylinder body.
Specifically, as shown in fig. 1, 3, 4 and 7, the water outlet assembly 4 includes a water outlet tray, the water outlet tray 41 is connected to the bottom of the inner wall of the cylinder body 1 in a clamping manner, the left and right sides of the lower surface of the water outlet tray 41 are fixedly connected with the stoppers 42, both the stoppers 42 are connected to the lower surface of the inner wall of the cylinder body 1 in a clamping manner, the water inlet pipe 6 is connected to the stopper 42 on the left side in a clamping manner, the driving assembly 7 includes a water pump 71, the right side of the water pump 71 is fixedly connected to the left side of the cylinder body 1, the input end of the water pump 71 is communicated with one end of the water inlet pipe 8, the output end of the water pump 71 is respectively communicated with the water inlet pipe 6 and the connecting pipe 72, the outer wall of the connecting pipe 72 is provided with a valve, the air inlet assembly 11 includes an air pump 111, the left side of the air pump 111 is fixedly connected to the right side of the cylinder body 1, and through the mutual cooperation between the air pump 111 and the water pump 71, air generated by the operation of the air pump 111 can enter the water outlet tray 41 through the air inlet pipe 10, the air and the water are mixed and are simultaneously sprayed out from the water outlet disc 41, the spraying force of the water is increased, the human body is massaged, the passive air inlet is changed into the active air inlet, so that the massage effect is further improved, two output ends of the air pump 111 are respectively communicated with one end of the air inlet pipe 10 and one end of the guide pipe 112, the outer wall of the guide pipe 112 is provided with a valve, and the top of the guide pipe 112 is communicated with the water inlet port 12 and the right end of the branch pipe 13.
Specifically, as shown in fig. 1, 5, 6 and 8, the outer wall of the permeable box 2 is hollow, a plurality of drainage holes 19 are formed in the inner wall of the cylinder body 1 at positions corresponding to the sliding grooves 18, the sliding block 17 and the sliding grooves 18 are in a T-shaped design, the connecting assembly 15 includes a through pipe 151, the right end of the through pipe 151 is communicated with the left end of the flexible hose 14, the outer wall of the through pipe 151 is symmetrically provided with guide pipes 152, the bottom ends of the two guide pipes 152 are respectively communicated with the upper surfaces of the two water spray assemblies 16, each water spray assembly 16 includes a spray pipe 161, the upper surface of the spray pipe 161 is communicated with the bottom ends of the guide pipes 152, the lower surface of the spray pipe 161 is provided with a plurality of spray heads 162, the end of each spray pipe 161, which is far away from each other, is respectively hinged with the end of each rotating assembly 20, through a pin shaft, the spray pipe 161 is matched with the pin shaft, and during the process of pressing down the handle 231, because the spray pipe 161 is hinged with the rotating shaft 202 through the pin shaft, make handle 231 drive spray tube 161 through powerful muscle 232 and overturn downwards, adjust the position of shower nozzle 162 and make it be close to 1 inside wall of cylinder body, increase the water pressure impact force, improve the washing effect, rotating assembly 20 includes bearing 201, bearing 201 joint is in slider 17's front, mutually support between pivot 202 and bearing 201, grip handle 231 side direction upset, because pivot 202 cup joints in bearing 201, make spray tube 161 side direction upset, carry out diversified clearance to cylinder body 1, the pivot 202 has been cup jointed in bearing 201, the positive one end of pivot 202 is articulated through the back of round pin axle with spray tube 161.
Specifically, as shown in fig. 1 and 2, the heating assemblies 26 are arranged below the front surface and the back surface of the inner wall of the cylinder body 1, the electromagnetic transceiving probes 27 are arranged on the front surface and the back surface of the inner wall of the cylinder body 1, the electromagnetic wave generator 28 is arranged on the front surface of the cylinder body 1, the electromagnetic wave generator 28 works by arranging the electromagnetic plate generator, the electromagnetic transceiving probes 27 receive and transmit electromagnetic waves, and carry out magnetic therapy massage on the human body, so that the massage cylinder is effective, the supporting plates 29 are fixedly connected below the front surface and the back surface of the cylinder body 1, the bottom of the cylinder body 1 is provided with the drain valve 31, and the support 30 is arranged on the right side of the inner wall of the cylinder body 1.
In conclusion, the following results are obtained:
by controlling the operation of the air pump 111, the water inlet 12 is connected to a water source, water under water pressure can flow into the flexible hose 14 through the branch pipe 13, the valve on the pipe 112 is opened, air can enter the branch pipe 13 through the pipe 112, under the action of external air pressure, the air is brought into the air passage of the flexible hose 14 to be mixed with water, and finally is ejected out of the nozzle 162 through the nozzle 161, the two nozzles 161 are adjusted by holding the handle 231, the two nozzles 161 can be driven to move leftwards by pulling the handle 231, so that the water ejected from the nozzle 162 can effectively wash the inner wall of the cylinder body 1, during the process of pressing down the handle 231, as the nozzle 161 is hinged with the rotating shaft 202 through the pin shaft, the handle 231 drives the nozzle 161 to turn downwards through the reinforcing rib 232, the position of the nozzle 162 is adjusted to be close to the inner side wall of the cylinder body 1, the water pressure is increased, when the nozzle 162 is continuously adjusted, can hold handle 231 side direction upset, because pivot 202 cup joints in bearing 201, make spray tube 161 side direction upset, carry out diversified clearance to cylinder body 1, compare in traditional mode, the purpose of clearing up is carried out to cylinder body 1 to the mode that this scheme effectively realized diversely and sprayed in step, improves when saving the water resource and erodees the effect.
Work through controlling water pump 71 and air pump 111 simultaneously, make water get into through inlet tube 6 in the play basin 41, air pump 111 work produces gaseous accessible intake pipe 10 and gets into in going out the basin 41, make air and water mix, and spout from a basin 41 simultaneously, increase the jet force of water and massage the human body, become initiative income gas by passive income gas, thereby further improve massage effect, work through electromagnetic wave generator 28, electromagnetic wave is received and dispatched to electromagnetic transceiver probe 27, carry out the magnetotherapy massage to people's health, it is very effective, and the setting of pushing away 25 on the cylinder body 1 is convenient for personnel from the cylinder body 1 body, because the setting of check valve pipe 5 avoids water and gas to appear the backward flow condition, thereby improve the stability that changes the intelligent operation of bathtub.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
Although the preferred embodiments of the present patent have been described in detail, the present patent is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present patent within the knowledge of those skilled in the art.