CN114394651A

CN114394651A - Hydrogen-rich water maintenance instrument

Info

Publication number: CN114394651A
Application number: CN202210108017.3A
Authority: CN
Inventors: 戴宇; 徐炳祥; 杨海鑫
Original assignee: Yangtze River Delta Healthy Agriculture Research Institute Zhejiang Co ltd
Current assignee: Yangtze River Delta Healthy Agriculture Research Institute Zhejiang Co ltd
Priority date: 2022-01-28
Filing date: 2022-01-28
Publication date: 2022-04-26

Abstract

The invention discloses a hydrogen-rich water maintenance instrument which comprises a top cover and a base matched with the top cover, wherein the top cover and the base are relatively fixed through a clamping component, a humidifying component is installed at the top of the top cover, a control circuit is installed in the top cover and used for controlling the humidifying component, and a hydrogen generator is installed in the base; the cleaning head is integrally in a clamping type design, the convenience of water adding is greatly improved while the sealing performance is ensured, the cleaning head is provided with a control circuit, hydrogen-rich water can be sprayed out according to different powers to adapt to users with different requirements, the skin is effectively maintained by utilizing the oxidation resistance and the anti-inflammatory performance of the hydrogen-rich water, the cleaning head is provided with a plurality of cleaning heads designed by spherical hinges and can be well attached to the skin of the user, a large number of nozzles are arranged to be combined with partial spherical cleaning head shells, the penetration of the hydrogen-rich water into the skin is facilitated, the maintenance effect is greatly enhanced, the cleaning heads are provided with balls, the cleaning head is convenient to move on the skin and has a certain massage function, the skin is relaxed, and the hydrogen-rich water is better penetrated.

Description

Hydrogen-rich water maintenance instrument

Technical Field

The invention relates to the field of hydrogen-rich water beauty, in particular to a hydrogen-rich water maintenance instrument.

Background

The hydrogen-rich water is also called as water, is a novel selective antioxidant and ideal anti-inflammatory substance, and hydrogen molecules are small in volume and easy to diffuse. Because of these properties, hydrogen-rich water can exert a better effect in skin care and antioxidation. For beauty-conscious people, the use of hydrogen-rich water for skin tightening and whitening treatment is a safe and effective option.

In the prior art, hydrogen-rich water is used for beauty treatment, such as spraying steam products, introducing hydrogen-rich water during massage, and a bathtub, shower, etc. to which hydrogen-rich water is added.

The prior art of skin care with hydrogen-rich water is roughly divided into two types, one is spray type, and atomization is utilized to generate small molecular hydrogen-rich water mass which is easy to absorb, but the dissolved hydrogen is easy to disperse in the atomization process; the other method is to perform cleaning by using media such as bristles and silica gel and simultaneously seep hydrogen-rich water to realize maintenance, but the method has great damage to the skin and is easy to make the skin thinner and thinner.

Disclosure of Invention

The invention aims to provide a hydrogen-rich water conservation instrument to solve the problems.

The technical purpose of the invention is realized by the following technical scheme: the utility model provides a hydrogen-rich water maintenance appearance, includes top cap and the base that matches with it, the top cap with the base passes through joint subassembly relatively fixed, the humidification subassembly is installed at the top cap top, be equipped with control circuit in the top cap and be used for control the humidification subassembly, hydrogen generator is equipped with in the base.

Preferably, the clamping assembly comprises a clamp which is fixed to the top cover

The connecting seat of connecting, be equipped with the joint groove in the connecting seat, the inslot of joint is seted up two and is supplied the gliding spout of joint, two through first spring coupling, every between the joint all blocks and inserts the joint pole in the joint inslot, the joint pole end is worn out the joint groove and with base fixed connection, the joint inslot is fixed to be equipped with two and to block the piece and be used for blockking the joint pole.

Preferably, the base internal fixation is equipped with first inner bag, hydrogen generator fixes first inner bag bottom, hydrogen generator fixed connection time switch, time switch passes the base, time switch is steerable opening and shutting of hydrogen generator, the mouth of a river has been seted up on the base, the fixed second inner bag that is equipped with in top cap bottom, the second inner bag inserts in the base, first inner bag top is fixed with the sealing washer.

As preferred, the humidification subassembly includes at least three cleaning head, the cleaning head is including seting up the movable tank on top cap surface, the fixed second spring that is equipped with in movable tank bottom, second spring top fixed connection movable block, the embedded first magnet strip that is equipped with of movable block, movable block top ball pivot is connected with the spheroid, the embedded second magnet strip that is equipped with of spheroid, the fixed cleaning head shell that is equipped with in spheroid top, the inside fixed apron that is equipped with of cleaning head shell, evenly install the nozzle on the apron, cleaning head shell upper surface rotates and is equipped with the round ball, and is three the cleaning head all installs through the raceway intercommunication the reposition of redundant personnel pipe fitting at top cap top.

Preferably, the control circuit is a parallel circuit, a power supply, a first contact group and a micro water pump are connected to a trunk of the control circuit, the micro water pump, the first contact group and the power supply are fixedly connected with the inner wall of the control chamber in the top cover, a first branch of the control circuit is connected with a second contact group and a first resistor, the second contact group and the first resistor are fixedly connected with the inner wall of the control chamber, a second branch of the control circuit is connected with a third contact group and a second resistor, and the third contact group and the second resistor are fixedly connected with the inner wall of the control chamber.

Preferably, the control circuit is controlled by a switch assembly on one side, the switch assembly comprises a gear groove communicated with the control chamber and an external space, the inner walls of two sides of the gear groove are respectively provided with three pairs of circular holes, a moving block is arranged in the gear groove in a sliding manner, two sliding rails are arranged in the moving block, a third spring is fixedly arranged on the inner wall on one side of each sliding rail, one end of the third spring is fixedly provided with a steel ball, the two steel balls are positioned in the first pair of circular holes, the outer side of the moving block is fixedly connected with a sliding button, the inner side of the moving block is fixedly connected with a moving plate, the moving plate can be communicated with the third contact group and the second contact group after moving, one side of the micro water pump is communicated with the shunt pipe fitting through a water supply pipe, and the other side of the micro water pump is connected with a water suction pipe with the tail end inserted into the water storage space.

Preferably, an air suction pipe is arranged on the inner wall of one side of the control chamber, a one-way air inlet assembly is arranged in the air suction pipe and comprises a baffle fixedly connected with the inner wall of the air suction pipe, a hole is formed in the middle of the baffle, the hole of the baffle is blocked by a sealing plate, the sealing plate is fixedly connected with a supporting block, the supporting block is partially arranged in a supporting seat in a sliding mode and is connected with the supporting seat through a fourth spring, and the supporting seat is fixedly connected with the inner wall of the air suction pipe.

As preferred, the fixed oil storage piece that is equipped with on the control room inner wall, be equipped with the oil storage tank in the oil storage piece, it is equipped with the contact piece to slide in the oil storage tank, the contact piece is electrically conductive material, can switch on after the contact piece downstream first contact group, every the activity groove all passes through the oil pipe intercommunication the oil storage tank, the activity groove oil pipe with all be full of hydraulic oil in the oil storage tank.

Preferably, a control terminal is fixedly arranged in the base and used for controlling the timing switch.

In conclusion, the invention has the following beneficial effects: the integral clamping type design of the invention greatly increases the convenience of water adding while ensuring the sealing property, the designed water pouring port facilitates the water adding of various containers such as bottled water, water cups and the like, hydrogen-rich water is automatically generated through electrolysis, the use is convenient, the control circuit is arranged, the hydrogen-rich water can be sprayed out according to different powers so as to adapt to users with different requirements, the skin is effectively maintained by utilizing the oxidation resistance and the anti-inflammatory performance of the hydrogen-rich water, the cleaning heads designed by the spherical hinges are arranged, the skin of the user can be well attached, a large number of nozzles are also arranged to be combined with partial spherical cleaning head shells, the hydrogen-rich water is favorably permeated into the skin, the maintenance effect is greatly enhanced, the cleaning heads are provided with balls, the movement on the skin is convenient, a certain massage function is realized, the skin is relaxed, and the hydrogen-rich water is better permeated.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.

FIG. 1 is a first schematic external view of an embodiment of the present invention;

FIG. 2 is a second external view of an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of an embodiment of the present invention;

FIG. 4 is a schematic diagram of the internal circuit connections of an embodiment of the present invention;

FIG. 5 is an enlarged schematic view of the embodiment of the present invention at A in FIG. 3;

FIG. 6 is an enlarged schematic view of the embodiment of the present invention at B in FIG. 3;

FIG. 7 is an enlarged view at C-C in FIG. 3 according to an embodiment of the present invention;

FIG. 8 is an enlarged view taken at D-D in FIG. 3 according to an embodiment of the present invention.

In the figure: 11. a top cover; 12. a movable groove; 13. a second spring; 14. a first magnet bar; 15. a movable block; 16. a cleaning head housing; 17. a nozzle; 18. a cover plate; 19. a ball bearing; 20. a shunt tube; 21. a sphere; 22. an oil pipe; 23. a water supply pipe; 24. a second contact set; 25. a gear groove; 26. a circular hole; 27. a moving block; 28. a slide button; 29. a third contact set; 30. a movable plate; 31. pouring a water gap; 32. a second inner container; 33. a base; 34. a timing switch; 35. a first inner container; 36. a hydrogen generator; 37. a water storage space; 38. a suction pipe; 39. a micro water pump; 40. a clamping and connecting rod; 41. a connecting seat; 42. a clamping groove; 43. a clamping head; 44. an air intake duct; 45. an oil storage block; 46. an oil storage tank; 47. a contact piece; 48. a first contact set; 49. a seal ring; 50. a second magnet bar; 51. a baffle plate; 52. a sealing plate; 53. a support block; 54. a supporting seat; 55. a fourth spring; 56. a first spring; 57. a power source; 59. a water delivery pipe; 61. a steel ball; 62. a third spring; 63. a slide rail; 66. a control room; 67. a blocking block; 69. and controlling the terminal.

Detailed Description

Combine fig. 1-8 a hydrogen-rich water maintenance appearance, including top cap 11 and the base 33 that matches with it, top cap 11 with base 33 passes through joint subassembly relatively fixed, humidification subassembly is installed at top cap 11 top, be equipped with control circuit in the top cap 11 and be used for controlling humidification subassembly, hydrogen generator 36 is equipped with in the base 33.

Beneficially, the clamping assembly comprises a connecting seat 41 fixedly connected with the top cover 11, a clamping groove 42 is formed in the connecting seat 41, two sliding chutes for the clamping heads 43 to slide are formed in the clamping groove 42, the two clamping heads 43 are connected with each other through a first spring 56, each clamping head 43 is clamped and inserted into a clamping rod 40 in the clamping groove 42, the tail end of the clamping rod 40 penetrates out of the clamping groove 42 and is fixedly connected with the base 33, and two blocking blocks 67 are fixedly arranged in the clamping groove 42 and used for blocking the clamping rod 40.

Beneficially, a first inner container 35 is fixedly arranged in the base 33, the hydrogen generator 36 is fixed at the bottom of the first inner container 35, a waterproof treatment is performed on a connection portion between the hydrogen generator 36 and the first inner container 35, the hydrogen generator 36 is fixedly connected with the timing switch 34, the timing switch 34 penetrates through the base 33, the timing switch 34 can control starting and stopping of the hydrogen generator 36, a water pouring port 31 is formed in the base 33, the water pouring port 31 facilitates water pouring, a second inner container 32 is fixedly arranged at the bottom of the top cover 11, the second inner container 32 is inserted into the base 33, a sealing ring 49 is fixed at the top of the first inner container 35, and the sealing ring 49 is used for ensuring the sealing performance between the second inner container 32 and the first inner container 35.

Advantageously, the humidifying assembly comprises at least three cleaning heads, said cleaning heads comprise a movable tank 12 opened on the surface of the top cover 11, a second spring 13 is fixedly arranged at the bottom of the movable groove 12, the top of the second spring 13 is fixedly connected with a movable block 15, a first magnet strip 14 is embedded in the movable block 15, a sphere 21 is connected to the top of the movable block 15 through a spherical hinge, a second magnet strip 50 is embedded in the sphere 21, a cleaning head shell 16 is fixedly arranged at the top of the sphere 21, a cover plate 18 is fixedly arranged in the cleaning head shell 16, nozzles 17 are uniformly arranged on the cover plate 18, the upper surface of the cleaning head shell 16 is provided with a circle of balls 19 in a rotating mode, the balls 19 can rotate in any direction, the friction coefficient between the balls 19 and the cleaning head shell 16 is small, and the three cleaning heads are communicated with a flow distribution pipe fitting 20 arranged on the top of the top cover 11 through water conveying pipes 59.

Advantageously, the control circuit is a parallel circuit, a power supply 57, a first contact set 48 and a micro water pump 39 are connected to a trunk of the control circuit, the micro water pump 39, the first contact set 48 and the power supply 57 are all fixedly connected to an inner wall of a control chamber 66 in the top cover 11, a first branch of the control circuit is connected to a second contact set 24 and a first resistor, the second contact set 24 and the first resistor are all fixedly connected to an inner wall of the control chamber 66, a second branch of the control circuit is connected to a third contact set 29 and a second resistor, and the third contact set 29 and the second resistor are all fixedly connected to an inner wall of the control chamber 66.

Beneficially, the control circuit is controlled by a switch assembly on one side, the switch assembly includes a gear groove 25 communicating the control chamber 66 with an external space, inner walls on two sides of the gear groove 25 are respectively provided with three pairs of circular holes 26, a moving block 27 is slidably disposed in the gear groove 25, two sliding rails 63 are disposed in the moving block 27, a third spring 62 is fixedly disposed on an inner wall on one side of the sliding rails 63, one end of the third spring 62 is fixedly provided with a steel ball 61, the two steel balls 61 are located in the first pair of circular holes 26, an outer side of the moving block 27 is fixedly connected with a sliding button 28, an inner side of the moving block 27 is fixedly connected with a moving plate 30, the moving plate 30 is made of a conductive material, the moving block 27 and the sliding button 28 are made of an insulating material, the moving plate 30 can be connected with the third contact group 29 and the second contact group 24 after moving upward, one side of the micro water pump 39 is communicated with the shunt pipe 20 through a water supply pipe 23, the other side of the micro water pump 39 is connected with a water suction pipe 38 with the tail end inserted into the water storage space 37.

Advantageously, an air suction pipe 44 is arranged on one side of the inner wall of the control chamber 66, a one-way air inlet assembly is arranged in the air suction pipe 44, the one-way air inlet assembly comprises a baffle plate 51 fixedly connected with the inner wall of the air suction pipe 44, a hole is formed in the middle of the baffle plate 51, the hole of the baffle plate 51 is blocked by a sealing plate 52, so that air cannot be exhausted from the air suction pipe 44 to the outside, the sealing plate 52 is fixedly connected with a supporting block 53, the supporting block 53 is partially and slidably arranged in a supporting seat 54, the supporting block 53 is connected with the supporting seat 54 through a fourth spring 55, and the supporting seat 54 is fixedly connected with the inner wall of the air suction pipe 44.

Beneficially, fixed oil storage block 45 that is equipped with on the control room 66 inner wall, be equipped with oil storage tank 46 in the oil storage block 45, it is equipped with contact piece 47 to slide in the oil storage tank 46, contact piece 47 is electrically conductive material, contact piece 47 can switch on after the lapse of lapse the first contact group 48, every activity groove 12 all communicates through oil pipe 22 oil storage tank 46, activity groove 12 oil pipe 22 with all be full of hydraulic oil in the oil storage tank 46.

Advantageously, a control terminal 69 is fixedly arranged in the base 33, said control terminal 69 being used to control the time switch 34 (the time period for which the time switch 34 is set is typically about six minutes, which is just saturated for a volume of hydrogen-rich water of about 500ml according to the invention).

Advantageously, the entire internal water has to be poured out after each use of the invention to ensure the quality of hydrogen rich water production.

The use method of the invention comprises the following steps:

when a user wants to perform skin care, two fingers of one hand simultaneously press the clamping joints 43, so that the clamping joints 43 do not clamp the clamping rod 40 any more, the first spring 56 is compressed, the other hand grasps the base 33, and pulls open the base 33 and the top cover 11, and at the moment, water can be poured from the water pouring port 31 into the first inner container 35 (the water is preferably purified water or distilled water, and bottled water can directly put the port on the water pouring port 31);

after the clamping operation is completed, the clamping joints 43 are kept pressed, the base 33 and the top cover 11 are pushed to be closed, the clamping rods 40 are reset, the clamping joints 43 are loosened, and the first spring 56 is reset to drive the two clamping joints 43 to clamp the corresponding clamping rods 40;

manually pressing the timing switch 34 to start the hydrogen generator 36, electrolyzing water in the water storage space 37 by the hydrogen generator 36 to generate hydrogen-rich water, resetting the timing switch 34 by the control terminal 69 after a specified time, and closing the hydrogen generator 36;

after the hydrogen-rich water is prepared, the base 33 is held by hand, part of the cleaning head shell 16 is aligned with the skin position to be maintained and pressed down, under the action of the spherical hinge of the sphere 21 and the top cover 11, the cleaning head shell 16 is attached to the skin to be maintained as much as possible, the cleaning head shell 16 drives the movable block 15 to move after being pressed, the second spring 13 is extruded, and hydraulic oil in the movable groove 12 is pushed into the oil storage groove 46 through the oil pipe 22 to push the contact piece 47 to be communicated with the first contact group 48;

when a user feels sensitive to the skin and wants to select a milder mode, the slide button 28 is pushed to enable the two steel balls 61 to be clamped into the pair of circular holes 26 at the middle position, the movable sheet 30 moves upwards to be communicated with the third contact group 29, so that the micro-water pump 39 is powered on, the micro-water pump 39 pumps hydrogen-rich water from the water storage space 37 through the water suction pipe 38, the hydrogen-rich water passes through the water supply pipe 23, the shunt pipe 20 and the water delivery pipe 59 and finally flows and impacts the skin of the user uniformly from the nozzles 17, the cleaning head shell 16 is shaped to enable the hydrogen-rich water to stay on the skin for a long time, the large number of nozzles 17 are arranged to enable the hydrogen-rich water to be fully contacted with the skin, and the manual operation is carried out, so that the skin-washing-massaging-free-skin washing device moves on the skin, the balls 19 roll smoothly on the skin to slightly squeeze the skin, and has a massage-like effect on the skin while the movement is convenient, the hydrogen-rich water can better permeate, so that the skin of a user can be maintained;

under the condition that the skin of a user has more cutin or smaller pores, the slide button 28 can be pushed to enable the two steel balls 61 to be clamped into the pair of circular holes 26 at the top positions, the movable sheet 30 moves to enable the third contact group 29 and the second contact group 24 to be simultaneously connected, compared with the former condition, the current passing through the micro water pump 39 is increased, the micro water pump 39 can extract hydrogen-rich water with higher power, and therefore stronger impact and permeation can be formed on the skin of the user, and the skin care effect is enhanced;

when the hydrogen-rich water is sprayed out, the unidirectional air inlet assembly is used for ensuring air pressure balance by introducing air from the outside;

when the cleaning head shell 16 of the invention is not pressed, the contact piece 47 can not contact the first contact set 48 (namely the micro water pump 39 can not be started), the invention can not be started even if the slide button 28 is pushed, and the hydrogen-rich water in the invention can not be sprayed randomly;

after use, the "N" pole of the second magnet strip 50 is attracted and reset by the "S" pole of the first magnet strip 14, thereby maintaining the horizontal state of the cleaning head housing 16;

the two snap heads 43 are designed so that the base 33 and the top cover 11 will not be separated by accidental contact.

The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a hydrogen-rich water maintenance appearance, includes top cap and the base that matches with it, its characterized in that: the top cap with the base passes through the joint subassembly relatively fixed, the humidification subassembly is installed at the top cap top, be equipped with control circuit in the top cap and be used for control the humidification subassembly, hydrogen generator is equipped with in the base.

2. The hydrogen-rich water maintenance instrument according to claim 1, characterized in that: the joint subassembly include with top cap fixed connection's connecting seat, be equipped with the joint groove in the connecting seat, the joint inslot is seted up two and is supplied the gliding spout of joint, two through first spring coupling, every between the joint all blocks and inserts the joint pole in the joint inslot, the joint pole end is worn out the joint groove and with base fixed connection, the joint inslot is fixed to be equipped with two and blocks the piece and be used for blockking the joint pole.

3. The hydrogen-rich water maintenance instrument according to claim 1, characterized in that: the hydrogen generator is fixed bottom the first inner bag, hydrogen generator fixed connection time switch, time switch passes the base, time switch is steerable opening of hydrogen generator stops, the mouth of a river has been seted up on the base, the fixed second inner bag that is equipped with in top cap bottom, the second inner bag inserts in the base, first inner bag top is fixed with the sealing washer.

4. The hydrogen-rich water maintenance instrument according to claim 1, characterized in that: the humidification subassembly includes at least three cleaning head, the cleaning head is including seting up the movable tank on top cap surface, the fixed second spring that is equipped with in movable tank bottom, second spring top fixed connection movable block, the embedded first magnet strip that is equipped with of movable block, movable block top ball pivot is connected with the spheroid, the embedded second magnet strip that is equipped with of spheroid, the fixed cleaning head shell that is equipped with in spheroid top, the inside fixed apron that is equipped with of cleaning head shell, evenly install the nozzle on the apron, cleaning head shell upper surface rotates and is equipped with the round ball, and is three the cleaning head all installs through the raceway intercommunication the reposition of redundant personnel pipe fitting at top cap top.

5. The hydrogen-rich water maintenance instrument according to claim 4, wherein: the control circuit is a parallel circuit, a power supply, a first contact group and a micro water pump are connected to a trunk of the control circuit, the micro water pump is characterized in that the first contact group and the power supply are fixedly connected with the inner wall of a control chamber in the top cover, a first branch of the control circuit is connected with a second contact group and a first resistor, the second contact group and the first resistor are fixedly connected with the inner wall of the control chamber, a second branch of the control circuit is connected with a third contact group and a second resistor, and the third contact group and the second resistor are fixedly connected with the inner wall of the control chamber.

6. The hydrogen-rich water maintenance instrument according to claim 5, characterized in that: the control circuit is controlled by a switch assembly on one side, the switch assembly comprises a gear groove communicated with the control chamber and an external space, three pairs of circular holes are formed in the inner walls of two sides of the gear groove respectively, a moving block is arranged in the gear groove in a sliding mode, two sliding rails are arranged in the moving block, a third spring is fixedly arranged on the inner wall on one side of each sliding rail, a steel ball is fixedly arranged at one end of the third spring, the two steel balls are located in the first pair of circular holes, a sliding button is fixedly connected to the outer side of the moving block, a moving plate is fixedly connected to the inner side of the moving block, the third contact group and the second contact group can be connected after the moving plate moves, one side of the micro water pump is communicated with the shunt pipe fitting through a water supply pipe, and the other side of the micro water pump is connected with a water suction pipe with the tail end inserted into the water storage space.

7. The hydrogen-rich water maintenance instrument according to claim 4, wherein: the inner wall of one side of the control chamber is provided with an air suction pipe, a one-way air inlet assembly is arranged in the air suction pipe, the one-way air inlet assembly comprises a baffle fixedly connected with the inner wall of the air suction pipe, the middle of the baffle is provided with a hole, the hole of the baffle is blocked by a sealing plate, the sealing plate is fixedly connected with a supporting block, the supporting block is partially arranged in a supporting seat in a sliding mode, the supporting block is connected with the supporting seat through a fourth spring, and the supporting seat is fixedly connected with the inner wall of the air suction pipe.

8. The hydrogen-rich water maintenance instrument according to claim 4, wherein: the fixed oil storage piece that is equipped with on the control room inner wall, be equipped with the oil storage tank in the oil storage piece, it is equipped with the contact piece to slide in the oil storage tank, the contact piece is electrically conductive material, can switch on after the contact piece moves down first contact group, every the activity groove all passes through the oil pipe intercommunication the oil storage tank, the activity groove oil pipe with all be full of hydraulic oil in the oil storage tank.

9. The hydrogen-rich water maintenance instrument according to claim 3, characterized in that: the base internal fixation is equipped with control terminal, control terminal is used for controlling time switch.