Knob control structure of table type oral irrigator and table type oral irrigator controlled by knob

Abstract

The utility model provides a table type oral irrigator knob control structure and a table type oral irrigator controlled through a knob, and belongs to the field of oral care and cleaning, and the table type oral irrigator knob control structure comprises a main machine, a control knob and a positioning assembly. The knob and the positioning component are matched with the gear symbols on the host, so that the gear can be accurately shifted, a proper gear can be quickly found each time, a damping feeling is generated when a spring pin and a plurality of gear positioning grooves in the positioning component are clamped in / out, the hand feeling is good along with'click 'sound feedback, and the gear is determined along with sound.

Description

Technical Field

[0001] The utility model relates to the field of oral care and cleaning, in particular to a knob control structure of a desktop dental irrigator and a desktop dental irrigator controlled by a knob. Background Art

[0002] A dental irrigator is an auxiliary tool for oral cavity cleaning, which uses the way of pulsed water flow impact to clean teeth and dental floss. It mainly includes handheld and desktop types. The biggest feature of the desktop dental irrigator is that its water tank is much larger than that of the portable one, which is suitable for multiple family members to use together. It includes components such as a main body, a water pipe, a water tank, a handle and a nozzle, etc. A water pumping component is arranged in the main body to transmit the water in the water tank to the handle in the form of pulsed water flow. A nozzle is detachably installed on the handle for oral cavity cleaning. Among them, the main body controls the pulsed water flow gear through a knob.

[0003] However, the knob on the existing desktop dental irrigator cannot achieve precise positioning and gear adjustment through the angle of the knob, so that each user cannot quickly find the most suitable gear for himself and needs to debug repeatedly. For this reason, the present utility model comes into being. Summary of the Utility Model

[0004] One object of the present utility model is to solve the problem that the angle of the knob in the existing desktop dental irrigator cannot achieve precise gear adjustment, so that each user cannot quickly find the most suitable gear for himself and needs to debug repeatedly.

[0005] Another object of the present utility model is to provide a desktop dental irrigator that can achieve precise positioning and gear adjustment.

[0006] To achieve the first object of the present utility model, the present utility model provides a knob control structure of a desktop dental irrigator, which is characterized in that it includes:

[0007] A main body, on which gear symbols corresponding to multiple control gears of the main body are provided;

[0008] A control knob, which includes a knob main body and an installation part. The installation part is arranged on the knob main body. The installation part passes through the casing of the main body and is rotationally controlled by a potentiometer on the control main board of the main body. The knob main body is located outside the casing; a gear indication is also provided on the knob main body.

[0009] A positioning component, which includes a spring pin and multiple gear positioning grooves. The positions of the multiple gear positioning grooves respectively correspond to the multiple gear symbols. The spring pin and the gear positioning grooves are respectively and adaptively arranged on the casing and the knob main body.

[0010] Preferably, the casing is provided with a knob mounting hole, and the mounting portion is a mounting rod; a sealing groove and a sealing ring are provided between the mounting rod and the knob mounting hole. The sealing groove is provided on the mounting rod or on the hole wall of the knob mounting hole, and the sealing ring is arranged in the sealing groove.

[0011] Preferably, the potentiometer is mounted on the control main board. The end of the mounting rod facing the potentiometer has a socket, and the socket is inserted into the boss of the potentiometer.

[0012] Preferably, a buckle is further provided on the mounting rod. After passing through the knob mounting hole, the buckle catches the inner wall of the casing.

[0013] Preferably, a limit assembly is further included. The limit assembly includes a first-gear limit member, a last-gear limit member, and a limit rib; the limit rib is arranged on the knob body, and the first-gear limit member and the last-gear limit member are arranged on the casing; when the gear indicator points to the first gear of the gear symbol, the limit rib abuts and is limited by the first-gear limit member, and when the gear indicator points to the last gear of the gear symbol, the limit rib abuts and is limited by the last-gear limit member.

[0014] Preferably, anti-slip lines are provided on the side wall of the knob body.

[0015] Preferably, a switch status indicator light is further provided on the casing, and the switch status indicator light is controlled and connected to the control main board.

[0016] Preferably, a plurality of positioning protrusions are provided on the knob body, and a gear positioning groove is formed between two adjacent positioning protrusions; smooth surfaces for facilitating the spring pin to be inserted into / extracted from are formed on both sides of the positioning protrusion.

[0017] The above technical solutions alone or in combination exhibit the following beneficial effects:

[0018] By cooperating the knob and the positioning component with the gear symbol, the gear can be accurately adjusted, and the suitable gear can be quickly found each time; moreover, there is a sense of damping when the spring pin is inserted into / extracted from the plurality of gear positioning grooves, accompanied by a "click" sound feedback, which has a good feel and the gear can be determined by the sound.

[0019] Multiple gear symbols can be set on the body of the host for selection, and it is easier for users to remember the gears suitable for themselves.

[0020] By controlling the knob in cooperation with the potentiometer, the power on / off and gear adjustment of the host can be realized, and there is no need to additionally configure a switch.

[0021] The control knob is cooperatively connected with the potentiometer, which is simple, reliable and has a low cost.

[0022] The installation part of the control knob is provided with a sealing groove and a sealing ring, which can prevent water from entering the control main board, protect the use, and extend the service life.

[0023] To achieve the second object of the present utility model, the present utility model provides a tabletop dental irrigator controlled by a knob, which is characterized in that it includes a water tank, a handle, a nozzle, a water pipe and the above-mentioned tabletop dental irrigator knob control structure; the water tank is located at the top of the main body and supplies water to the main body in a communicating manner, the nozzle is installed on the handle, and the handle is connected to the main body through the water pipe.

[0024] Preferably, at least a first groove is formed on the side wall of the casing of the main body, the knob body is located in the first groove, and the outer end surface does not protrude from the first groove.

[0025] The above technical solutions alone or in combination exhibit the following beneficial effects:

[0026] By cooperating the knob with the positioning component and the gear symbols, the gear can be accurately adjusted, and the suitable gear can be quickly found each time; moreover, there is a damping feeling when the spring pin is snapped into / snapped out of the multiple gear positioning grooves, accompanied by a "click" sound feedback, which has a good hand feeling and the gear can be determined by the sound.

[0027] Multiple gear symbols can be set on the body of the main body for selection, and it is easier for users to remember the gears suitable for themselves.

[0028] By cooperating the control knob with the potentiometer, the main body can be turned on and off and the gear can be adjusted, without the need to configure an additional switch.

[0029] The control knob is cooperatively connected with the potentiometer, which is simple and reliable and has a low cost.

[0030] The installation part of the control knob is provided with a sealing groove and a sealing ring, which can prevent water from entering the control main board, protect the use, and extend the service life.

[0031] The knob body is arranged in the first groove and the outer end surface does not protrude, making the structure more beautiful and easier to store and protect. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It shows a schematic structural diagram of the tabletop dental irrigator controlled by a knob in the present utility model.

[0033] Figure 2 It shows an exploded structural diagram of the tabletop dental irrigator controlled by a knob in the present utility model.

[0034] Figure 3 It shows a front view of the tabletop dental irrigator controlled by a knob in the present utility model.

[0035] Figure 4 It showsFigure 3 Cross-sectional view A-A in

[0036] Figure 5 Express Figure 4 Enlarged view at position B in

[0037] Figure 6 Express the front view of the tabletop dental irrigator controlled by a knob in the present utility model

[0038] Figure 7 Express Figure 6 Cross-sectional view C-C in

[0039] Figure 8 Express Figure 7 Enlarged view at position D in

[0040] Figure 9 Express the structural schematic diagram of the control knob in the present utility model.

[0041] Wherein:

[0042]

[0043] Specific embodiments

[0044] The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations. The basic principles defined in the following description can be applied to other implementation schemes, variation schemes, improvement schemes, equivalent schemes, and other technical schemes that do not depart from the spirit and scope of the present utility model.

[0045] Those skilled in the art should understand that in the disclosure of the present utility model, the orientation or positional relationships indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations to the present utility model.

[0046] In the present utility model, a potentiometer is a commonly used component. A potentiometer is a resistive element with three leads and a resistance value that can be adjusted according to a certain variation law. A potentiometer usually consists of a resistive body and a movable brush. When the brush moves along the resistive body, a resistance value or voltage related to the displacement is obtained at the output terminal. Therefore, the function of a potentiometer is to adjust the magnitude of voltage (including DC voltage and signal voltage) and current. Also because of this principle, by rotating the boss on the potentiometer, the magnitude of voltage (including DC voltage and signal voltage) and current can be adjusted, thereby realizing the on / off of the flushing device to be adjusted and the magnitude of the pulsed water flow. This is common knowledge in the field of electrical components and is also a prerequisite for understanding this embodiment.

[0047] Embodiment 1:

[0048] Please refer to Figures 1 to 9 , this embodiment provides a knob control structure for a desktop flushing device, including a main body 1, a control knob 2, and a positioning component. Among them, the control main board 13 of the main body 1 is controlled and adjusted by the control knob 2. As described above, it can adjust the on / off of the control main board 13 and the magnitude of the voltage (including DC voltage and signal voltage) and current of the motor in the main body 1; thereby realizing the adjustment of the magnitude of the pulsed water flow. This embodiment does not involve the improvement of the principle structure of the water pumping in the main body 1, so no redundant explanation is made, and those skilled in the art should be able to understand.

[0049] Specifically, please refer to Figure 1 and Figure 2 , in order to set the water flow gears of the main body 1 for the convenience of users to select. There are gear symbols 24 corresponding to multiple control gears of the main body 1 on the main body 1. The gear symbols 24 can be determined according to actual needs. In this embodiment, 10 gear symbols 24 are provided, that is, 10 - gear adjustment can be performed in this embodiment. In practice, the number of gears can be reduced to achieve simpler adjustment, or the number of gears can be increased to achieve more refined adjustment. This embodiment does not make specific limitations.

[0050] Please refer to Figure 2 , Figure 5 and Figure 9 , the control knob 2, as the core adjustment component, itself includes a knob body 21 and a mounting part 22. The knob body 21 is for users to operate and rotate, and the mounting part 22 is used to cooperate with the potentiometer 14 to control and install on the control main board 13. Among them, the mounting part 22 is provided on the knob body 21. The mounting part 22 passes through the casing of the main body 1 and rotates and controls the control main board 13 of the main body 1 through the potentiometer 14, and the knob body 21 is located outside the casing. Further, there is also a gear indicator on the knob body 21 to facilitate pointing to a certain gear symbol 24 during adjustment.

[0051] Please refer to Figure 2 and Figure 9, the positioning component realizes the precise positioning of the control knob 2 when it points to each gear symbol 24. Specifically, the positioning component includes a spring pin 33 and a plurality of gear positioning slots 225. Correspondingly, the positions of the plurality of gear positioning slots 225 respectively correspond to the plurality of gear symbols 24, and the spring pin 33 and the gear positioning slots 225 are respectively and adaptively arranged on the housing and the knob body 21. There are two setting methods according to position conversion:

[0052] 1. A plurality of gear positioning slots 225 are arranged on the housing and the spring pin 33 is arranged on the knob body 21;

[0053] 2. A plurality of gear positioning slots 225 are arranged on the knob body 21 and the spring pin 33 is arranged on the housing. This embodiment is described using this implementation method. Specifically, the spring pin 33 includes a pin body and a spring 32. There is a spring pin installation opening 31 on the housing, and this installation opening can be formed by an installation cylinder. The pin body is installed in the spring installation opening 31 through the spring 32.

[0054] In the above solution, by cooperating the knob and the positioning component with the gear symbol 24, the gear can be accurately shifted, and the appropriate gear can be quickly found each time; and there is a damping feeling when the spring pin 33 is snapped into / snapped out of the plurality of gear positioning slots 225, accompanied by a "click" sound feedback, with good feel and the gear can be determined by the sound.

[0055] The above solution is necessary to implement the basic of this embodiment. The following will be further described in detail in combination with the drawings and specific implementation manners:

[0056] To adapt to the installation of the installation part 22, the housing is provided with a knob installation hole 26, and the installation part 22 is implemented as an installation rod. There are a sealing groove 223 and a sealing ring 224 between the installation rod and the knob installation hole 26. The sealing groove 223 is arranged on the installation rod, and the sealing ring 224 is arranged in the sealing groove 223. After inserting the installation rod into the knob installation hole 26, the sealing groove 223 and the sealing ring 224 can prevent the knob installation hole 26 from leaking water. Or, the sealing groove 223 is arranged on the hole wall of the knob installation hole 26, the sealing ring 224 is embedded in the sealing groove 223, and after the installation rod is inserted, it makes sealing contact with the sealing ring 224. Although no specific illustration is given for this method, those skilled in the art should be able to clearly obtain it according to the description of the text.

[0057] Furthermore, the potentiometer 14 is installed on the control main board 13. The end of the installation rod facing the potentiometer 14 has an insertion interface 221, and the insertion interface 221 is inserted into the boss 141 of the potentiometer 14. Thus, the operation control of the control main board 13 is realized by rotating the boss 141 of the potentiometer 14.

[0058] The potentiometer 14 drives the boss 141 of the potentiometer 14 to rotate in a plug-in manner with the mounting rod. It should be noted that although the plug-in interface 221 and the boss 141 are not limited in their structural forms in this embodiment, there should be a mutual restriction in the rotational direction between the two. As a preferred embodiment, the plug-in interface 221 can be a square opening, and the boss 141 is also implemented as a square boss.

[0059] To prevent the control knob 2 from being accidentally pulled out and disengaged from the potentiometer 14, a buckle 222 is further provided on the mounting rod, and the buckle 222 passes through the knob mounting hole 26 and then catches the inner wall of the casing. Specifically, the buckle 222 is pressed into the knob mounting hole 26, and after passing through the knob mounting hole 26, the buckle 222 resumes its shape and catches on the inner wall of the casing, completing the fixation of the insertion direction of the control knob 2.

[0060] The control knob 2 determines the gear by rotation. To prevent excessive rotation from damaging the potentiometer 14, this embodiment further includes a limit assembly, which includes a first-gear limit member 253, a last-gear limit member 252, and a limit rib 251. Specifically, the limit rib 251 is provided on the knob body 21, and the first-gear limit member 253 and the last-gear limit member 252 are provided on the casing. When the gear indicator 211 points to the first gear of the gear symbol 24, the limit rib 251 abuts and is limited by the first-gear limit member 253. When the gear indicator 211 points to the last gear of the gear symbol 24, the limit rib 251 abuts and is limited by the last-gear limit member 252. The purpose of this structure is to prevent the control knob 2 from rotating within a certain angular range, and this range includes the rotational range required from the first gear to the last gear. Taking this embodiment as an example, the first gear is 0, that is, the power-on state; the last gear is 10, that is, the maximum pulsed water flow state. The gear indicator 211 of the knob body 21 rotates and indicates between 0 and 10, and the limit assembly restricts rotational operations beyond this range.

[0061] Furthermore, for the convenience of user operation, anti-slip patterns 212 are provided on the side wall of the knob body 21, and the anti-slip patterns 212 are set as anti-slip ridges or continuous anti-slip grooves, etc.

[0062] In this embodiment, the 0 gear of the control knob 2 replaces the traditional power-off switch. That is, in the 0 gear, there is no current driving the water pump structure inside the main unit 1, and in the 10 gear, the driving current is the largest. The switch state changes between 0 and 1 gear. To facilitate the user to know the switch state, a switch state indicator 23 is further provided on the casing, and the switch state indicator 23 is controlled and connected to the control main board 13.

[0063] As a preferred option for forming the gear positioning groove 225, a plurality of positioning protrusions 226 are provided on the knob body 21. The gear positioning groove 225 is formed between two adjacent positioning protrusions 226. Smooth surfaces are formed on both sides of the positioning protrusion 226 to facilitate the insertion and removal of the spring pin 33. This enables a certain damping effect during operation and is accompanied by a "clicking" sound effect.

[0064] The above technical solutions, alone or in combination, exhibit the following beneficial effects:

[0065] By cooperating the knob and the positioning component with the gear symbol 24, the gear can be accurately adjusted, and the suitable gear can be quickly found each time. Moreover, there is a damping feeling when the spring pin 33 is inserted into and removed from the plurality of gear positioning grooves, accompanied by a "clicking" sound feedback, which provides a good hand feeling and can confirm the gear with the sound.

[0066] The body of the main unit 1 can be provided with a plurality of gear symbols 24 for selection, and it is easier for users to remember the gears suitable for themselves.

[0067] By controlling the knob 2 in cooperation with the potentiometer 14, the main unit 1 can be turned on and off and the gear can be adjusted, without the need to configure an additional switch.

[0068] The control knob 2 is connected to the potentiometer 14 in cooperation, which is simple and reliable and has a low cost.

[0069] The mounting portion 22 of the control knob 2 has a sealing groove 223 and a sealing ring 224, which can prevent water from entering the control main board 13, protect its use, and extend its service life.

[0070] Embodiment 2:

[0071] Please refer to Figures 1 to 9 , this embodiment provides a tabletop dental irrigator controlled by a knob, including a water tank 4, a handle 6, a nozzle 7, a water pipe 5, and a tabletop dental irrigator knob control structure. Among them, the main unit 1 includes a top cover 11 and a bottom cover 12 at the bottom. The water tank 4 is located on the top cover 11 of the main unit 1 and supplies water to the main unit 1. The nozzle 7 is installed on the handle 6, and the handle 6 is connected to the main unit 1 through the water pipe 5.

[0072] Furthermore, the tabletop dental irrigator knob control structure includes the main unit 1, a control knob 2, and a positioning component. Among them, the control main board 13 of the main unit 1 is controlled and adjusted by the control knob 2. As described above, it can adjust the switch of the control main board 13 and the voltage (including DC voltage and signal voltage) and current magnitude of the motor in the main unit 1; thereby realizing the adjustment of the size of the pulsed water flow. This embodiment does not involve the improvement of the principle structure of the internal water pumping of the main unit 1, so no redundant explanation is made, and those skilled in the art should be able to understand.

[0073] Specifically, in order to set the water flow gears of the main unit 1 for the convenience of users to select, gear symbols 24 corresponding to multiple control gears of the main unit 1 are provided on the main unit 1. The gear symbols 24 can be determined according to actual requirements. In this embodiment, 10 gear symbols 24 are provided, that is, 10 - gear adjustment can be performed in this embodiment. In practice, the number of gears can be reduced to achieve simpler adjustment, or the number of gears can be increased to achieve more refined adjustment. This embodiment does not make specific limitations.

[0074] The control knob 2, as the core adjustment component, itself includes a knob body 21 and a mounting portion 22. The knob body 21 is for users to operate and rotate, and the mounting portion 22 is used to cooperate with the potentiometer 14 to control the operation on the control main board 13. Among them, the mounting portion 22 is provided on the knob body 21. The mounting portion 22 passes through the casing of the main unit 1 and rotates and controls the control main board 13 of the main unit 1 through the potentiometer 14, and the knob body 21 is located outside the casing. Further, a gear indication is also provided on the knob body 21 to facilitate pointing to a certain gear symbol 24 during adjustment.

[0075] The positioning component realizes the precise positioning of the control knob 2 when pointing to each gear symbol 24. Specifically, the positioning component includes a spring pin 33 and a plurality of gear positioning slots 225. Correspondingly, the positions of the plurality of gear positioning slots 225 respectively correspond to the plurality of gear symbols 24, and the spring pin 33 and the gear positioning slots 225 are respectively and adaptively provided on the casing and the knob body 21. There are two setting methods according to position conversion:

[0076] One, a plurality of gear positioning slots 225 are provided on the casing and the spring pin 33 is provided on the knob body 21;

[0077] Two, a plurality of gear positioning slots 225 are provided on the knob body 21 and the spring pin 33 is provided on the casing. This embodiment describes it in this implementation manner. Specifically, the spring pin 33 includes a pin body and a spring 32. A spring pin mounting opening 31 is provided on the casing, and the mounting opening can be formed by a mounting cylinder. The pin body is installed in the spring mounting opening 31 through the spring 32.

[0078] To adapt to the installation of the mounting portion 22, a knob mounting hole 26 is provided on the casing, and the mounting portion 22 is implemented as a mounting rod. A sealing groove 223 and a sealing ring 224 are provided between the mounting rod and the knob mounting hole 26. The sealing groove 223 is provided on the mounting rod, and the sealing ring 224 is provided in the sealing groove 223. After inserting the mounting rod into the knob mounting hole 26, the sealing groove 223 and the sealing ring 224 can prevent the knob mounting hole 26 from leaking water. Or, the sealing groove 223 is provided on the hole wall of the knob mounting hole 26, the sealing ring 224 is embedded in the sealing groove 223, and after the mounting rod is inserted, it makes a sealing contact with the sealing ring 224. Although no specific illustration is given for this method, those skilled in the art should be able to understand it without doubt according to the description of the text.

[0079] Further, the potentiometer 14 is installed on the control main board 13. The end of the installation rod facing the potentiometer 14 has a socket 221, and the socket 221 is plugged into the boss 141 of the potentiometer 14. Thus, the operation control of the control main board 13 is realized by rotating the boss 141 of the potentiometer 14.

[0080] The potentiometer 14 and the installation rod drive the rotation of the boss 141 of the potentiometer 14 in a plugged manner. It should be noted that although the structural forms of the socket 221 and the boss 141 are not limited in this embodiment, mutual restriction in the rotation direction should be formed between the two. As a preferred embodiment, the socket 221 can be a square opening, and the boss 141 is also implemented as a square boss.

[0081] To prevent the control knob 2 from being accidentally pulled out and separated from the potentiometer 14, a buckle 222 is further provided on the installation rod, and the buckle 222 passes through the knob mounting hole 26 and then catches the inner wall of the casing. Specifically, the buckle 222 is pressed into the knob mounting hole 26, and after passing through the knob mounting hole 26, the buckle 222 resumes its shape and catches on the inner wall of the casing, completing the fixation of the insertion direction of the control knob 2.

[0082] The control knob 2 realizes gear determination by rotation. To prevent excessive rotation from damaging the potentiometer 14, this embodiment further includes a limiting component, which includes a first - gear limiting member 253, a last - gear limiting member 252, and a limiting rib 251. Specifically, the limiting rib 251 is provided on the knob body 21, and the first - gear limiting member 253 and the last - gear limiting member 252 are provided on the casing. When the gear indicator 211 points to the first gear of the gear symbol 24, the limiting rib 251 abuts against and is limited by the first - gear limiting member 253. When the gear indicator 211 points to the last gear of the gear symbol 24, the limiting rib 251 abuts against and is limited by the last - gear limiting member 252. The purpose of this structure is to prevent the control knob 2 from rotating within a certain angle range, and this range includes the rotation range required from the first gear to the last gear. Taking this embodiment as an example, the first gear is 0, that is, the power - on state; the last gear is 10, that is, the maximum pulsed water flow state. The gear indicator 211 of the knob body 21 rotates and indicates between 0 and 10, and the limiting component restricts rotational operations beyond this range.

[0083] Further, for the convenience of user operation, anti - slip patterns 212 are provided on the side wall of the knob body 21, and the anti - slip patterns 212 are set as anti - slip ridges or continuous anti - slip grooves, etc.

[0084] In this embodiment, the 0 - gear of the control knob 2 replaces the traditional power - off switch. That is, in the 0 - gear state, there is no current driving the water - pumping structure inside the host 1, and in the 10 - gear state, the driving current is the largest. The transition between 0 and 1 gear realizes the switch function. To facilitate the user to know the switch state, a switch - state indicator light 23 is further provided on the casing, and the switch - state indicator light 23 is controlled and connected to the control main board 13.

[0085] As a preferred option for forming the gear positioning groove 225, a plurality of positioning protrusions 226 are provided on the knob body 21. The gear positioning groove 225 is formed between two adjacent positioning protrusions 226. Smooth surfaces are formed on both sides of the positioning protrusion 226 to facilitate the insertion / extraction of the spring pin 33. This enables a certain damping effect during operation and is accompanied by a "clicking" sound effect.

[0086] In order to improve the aesthetics of the outer side of the main unit 1, to improve the portability of storage, and more importantly, to protect the control knob 2, in a preferred embodiment of this example, at least a first groove 15 is formed on the side wall of the housing of the main unit 1. The knob body 21 is located within the first groove 15, and its outer end does not protrude from the first groove 15.

[0087] Preferably, the first groove 15 is implemented as an oval groove with semi-circular ends at both ends, and the gear symbols 24 are preferably arranged on the housing, and multiple gear symbols are arranged along the semi-circular groove edges.

[0088] Furthermore, a second groove 16 for storing the water pipe 5 is also formed within the first groove 15. The second groove 16 is located on one side of the control knob 2, and the depth of the second groove 16 is greater than that of the first groove 15.

[0089] The above technical solutions, either alone or in combination, exhibit the following beneficial effects:

[0090] By cooperating the knob and the positioning component with the gear symbol 24, the gear can be accurately adjusted, and the appropriate gear can be quickly found each time; moreover, the insertion / extraction between the spring pin 33 and multiple gear positioning grooves has a damping feeling, accompanied by a "clicking" sound feedback, with a good hand feel and the gear can be determined by the sound.

[0091] Multiple gear symbols 24 can be set on the body of the main unit 1 for selection, and it is easier for users to remember the gears suitable for themselves.

[0092] By cooperating the control knob 2 with the potentiometer 14, the main unit 1 can be turned on / off and the gear can be adjusted, eliminating the need for an additional switch.

[0093] The control knob 2 is cooperatively connected with the potentiometer 14, which is simple, reliable, and has a low cost.

[0094] The mounting portion 22 of the control knob 2 has a sealing groove 223 and a sealing ring 224, which can prevent water from entering the control main board 13, protect its use, and extend its service life.

[0095] The knob body 21 is arranged within the first groove, and its outer end does not protrude, making the structure more aesthetically pleasing and easier to store and protect.

[0096] Those skilled in the art should understand that the embodiments of the present utility model shown in the above description are only examples and do not limit the present utility model. The object of the present utility model has been fully and effectively achieved. The functions and structural principles of the present utility model have been shown and described in the embodiments. Without departing from the above principles, any variations or modifications can be made to the embodiments of the present utility model.

Claims

1. Knob control structure of a tabletop oral irrigator, characterized in that, it includes: A main body, on which there are gear symbols corresponding to multiple control gears of the main body; A control knob, which includes a knob main body and a mounting part. The mounting part is provided on the knob main body. The mounting part passes through the housing of the main body and rotates the control main board of the main body through a potentiometer. The knob main body is located outside the housing; there is also a gear indication on the knob main body; A positioning component, which includes a spring pin and multiple gear positioning grooves. The positions of the multiple gear positioning grooves respectively correspond to the multiple gear symbols. The spring pin and the gear positioning grooves are respectively and adaptively provided on the housing and the knob main body; Further, the housing is provided with a knob mounting hole, and the mounting part is a mounting rod; there is a sealing groove and a sealing ring between the mounting rod and the knob mounting hole. The sealing groove is provided on the mounting rod or on the hole wall of the knob mounting hole, and the sealing ring is provided in the sealing groove; there is also a buckle on the mounting rod. After passing through the knob mounting hole, the buckle catches the inner wall of the housing.

2. The tabletop oral irrigator knob control structure according to claim 1, characterized in that: The potentiometer is installed on the control main board. The end of the mounting rod facing the potentiometer has a socket, and the socket is plugged into the boss of the potentiometer.

3. The tabletop oral irrigator knob control structure according to claim 1, characterized in that: It further includes a limiting component, which includes a first-gear limiting piece, a last-gear limiting piece and a limiting rib; the limiting rib is provided on the knob main body, and the first-gear limiting piece and the last-gear limiting piece are provided on the housing; when the gear indication points to the first gear of the gear symbol, the limiting rib abuts and is limited by the first-gear limiting piece, and when the gear indication points to the last gear of the gear symbol, the limiting rib abuts and is limited by the last-gear limiting piece.

4. The tabletop oral irrigator knob control structure according to claim 1, characterized in that: There are anti-slip patterns on the side wall of the knob main body.

5. The tabletop oral irrigator knob control structure according to claim 1, characterized in that: There is also a switch status indicator light on the housing, and the switch status indicator light is controlled and connected to the control main board.

6. The tabletop oral irrigator knob control structure according to claim 1, characterized in that: There are multiple positioning protrusions on the knob main body, and the gear positioning grooves are formed between adjacent two positioning protrusions; smooth surfaces for facilitating the spring pin to be inserted into / extracted from are formed on both sides of the positioning protrusion.

7. A tabletop oral irrigator controlled by a knob, characterized in that, it includes a water tank, a handle, a nozzle, a water pipe and the tabletop oral irrigator knob control structure according to any one of claims 1 to 6 above; the water tank is located on the top of the main body and is communicated with the main body for water supply, the nozzle is installed on the handle, and the handle is communicated with the main body through the water pipe.

8. The tabletop oral irrigator controlled by a knob according to claim 7, characterized in that: At least a first groove is formed on the side wall of the casing of the host, the knob body is located in the first groove, and the outer end face does not protrude from the first groove.

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