A control knob and intelligent toilet seat thereof

Abstract

The present invention discloses a control knob and a smart toilet seat thereof, comprising: a knob body for sending a control signal, a knob support body for supporting the knob body; the knob body is connected to the knob support body through a key shaft; a first signal transceiver and a magnetic induction component are arranged in the cavity of the knob body; a multi-pole magnetic ring that can rotate around the magnetic induction component is arranged on the outer periphery of the knob body. The first signal transceiver sends a control signal according to the pressing information or the rotation information of the multi-pole magnetic ring, the knob body can be used when it is not installed on the smart toilet seat, and the smart toilet seat can be accurately controlled by sending the pressing information or the rotation information, ensuring that the user can use the control knob to start the required function more conveniently and flexibly, greatly improving the convenience of the control knob in the process of using, and achieving good use effect in the actual application process.

Description

Technical Field

[0001] The invention relates to the field of sanitary ware, and in particular to a control knob and an intelligent toilet seat thereof. Background Art

[0002] With the improvement of living standards, more and more people have begun to notice the convenience of intelligent sanitary ware in life. It has become a general trend to replace traditional toilets with intelligent toilets, which can be controlled by control knobs. As intelligent toilets have more and more functions, for example, some intelligent toilets have steam cleaning, deodorization, drying and other functions, the existing control knobs cannot accurately and flexibly control the intelligent toilets due to design defects. It is difficult for users to conveniently, quickly and accurately activate the required functions through the control knobs, causing many troubles for users. Therefore, the existing control knobs are difficult to control conveniently, quickly and accurately during use. Summary of the invention

[0003] In view of the above-mentioned deficiencies in the prior art, an object of the present invention is to provide a control knob and an intelligent toilet thereof, aiming to solve the problem that the existing control knob is difficult to control conveniently, quickly and accurately during use.

[0004] In order to achieve the above object, the present invention has the following specific technical solutions:

[0005] A control knob, comprising: a knob body for sending a control signal, and a knob support body for supporting the knob body;

[0006] The knob body is connected to the knob support body through a key shaft;

[0007] A first signal transceiver and a magnetic induction component are arranged in the cavity of the knob body; a multi-pole magnetic ring that can rotate around the magnetic induction component is arranged on the periphery of the knob body, and the magnetic induction component can sense the change of the magnetic field to obtain the rotation information of the multi-pole magnetic ring;

[0008] The first signal transceiver is used to send a control signal according to the pressing information or the rotation information of the multi-polar magnetic ring.

[0009] The control knob, wherein a button is further provided in the cavity, and the button can be pressed by the button shaft to output the pressing information to the first signal transceiver.

[0010] The control knob, wherein the knob body includes a knob cover connected to the knob support body through the button shaft, a knob rotating sleeve installed on the knob cover, and an annular knob rotating shell arranged on the outer periphery of the knob rotating sleeve and rotatable along the knob rotating sleeve; the multi-pole magnetic ring is fixedly arranged on the knob rotating shell.

[0011] The control knob, wherein a concave key pad is fixedly provided on the knob cover, and the top end of the key shaft is pushed into the concave key pad; the knob rotating sleeve, the knob cover and the concave key pad are combined to form the cavity.

[0012] The control knob is described, wherein the knob support body is provided with a fixing frame recessed hole, the knob cover is provided with a key shaft through hole, a shaft sleeve is provided in the key shaft through hole, the key shaft is fixed in the through hole of the shaft sleeve by a key shaft clamping ring, the key shaft is inserted into the fixing frame recessed hole and fixed so that the knob cover is connected to the knob support body.

[0013] The control knob, wherein a key shaft fixing frame is fixedly arranged in the knob support body, and the key shaft fixing frame is provided with the fixing frame concave hole.

[0014] The control knob, wherein a knob display screen is also provided in the cavity, and a knob appearance screen is provided on the outside of the knob rotating sleeve, and the knob appearance screen is used to obtain the user's touch operation to generate the pressing information and output it to the first signal transceiver.

[0015] The control knob, wherein a knob battery is also arranged in the cavity.

[0016] The control knob, wherein a charging receiving coil is also provided in the cavity.

[0017] An intelligent toilet, comprising a ceramic body, a host body and the above-mentioned control knob;

[0018] The host body includes a host base and a host shell that can be installed on the host base;

[0019] The host base is fixedly arranged on the ceramic body, and the control knob is fixedly arranged on the host housing;

[0020] The host housing is fixedly provided with a knob base for connecting with the knob support.

[0021] The intelligent toilet, wherein a first connecting part is provided at the bottom end of the groove of the knob support body, a second connecting part is fixedly provided at a position corresponding to the first connecting part on the knob base, and the knob support body and the knob base are connected via the first connecting part and the second connecting part.

[0022] Beneficial Effects

[0023] The control knob and the smart toilet of the present invention connect the knob body and the knob support body through the button shaft. The cavity of the knob body is provided with a first signal transceiver, a button and a magnetic induction component, and the button can be pressed through the button shaft; the outer periphery of the knob body is provided with a multi-pole magnetic ring that can rotate around the magnetic induction component, and the magnetic induction component senses the change of the magnetic field to obtain the rotation information of the multi-pole magnetic ring, and the first signal transceiver sends a control signal according to the pressing information of the button or the rotation information of the multi-pole magnetic ring. The knob body can be used when it is not installed on the smart toilet, and the smart toilet can be accurately controlled by sending pressing information or rotation information, ensuring that the user can use the control knob more conveniently and flexibly to start the required function, greatly improving the convenience of the control knob during use, and achieving good use effect in actual application. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying any creative work.

[0025] Figure 1 It is a structural diagram of the intelligent toilet of the present invention.

[0026] Figure 2 It is a structural diagram of the control knob of the present invention.

[0027] Figure 3 It is a partial structural diagram of the control knob of the present invention.

[0028] Figure 4 It is a partial structural diagram of the control knob of the present invention.

[0029] Figure 5 It is a partial structural diagram of the control knob of the present invention.

[0030] Figure 6 It is a partial structural diagram of the control knob of the present invention.

[0031] Figure 7 It is a partial structural diagram of the control knob of the present invention.

[0032] Figure 8 It is a partial structural diagram of the control knob of the present invention.

[0033] Fig. 9 It is a partial structural diagram of the control knob of the present invention.

[0034] Fig.10 It is a partial structural diagram of the control knob of the present invention.

[0035] Fig.11 It is a partial structural diagram of the control knob of the present invention.

[0036]

[0037] DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] It should be understood that when used in this specification and the appended claims, the terms "include" and "comprises" indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or combinations thereof.

[0040] The following descriptions of the embodiments are made with reference to the attached drawings to illustrate specific embodiments of the present invention that can be implemented. The directional terms mentioned in the present invention, such as "upper", "lower", "front", "back", "left", "right", "inner", "outer", "side", etc., are only with reference to the directions of the attached drawings. Therefore, the directional terms used are used to illustrate and understand the present invention, but are not used to limit the present invention.

[0041] The present invention provides a control knob and a smart toilet thereof. To make the purpose, technical solution and effect of the present invention clearer and more specific, the present invention is further described in detail below. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0042] See also Figure 1-Figure 11 , Figure 1 It is a structural diagram of the intelligent toilet of the present invention; Figure 2 is a structural diagram of the control knob of the present invention; Figure 3 It is a partial structural diagram of the control knob of the present invention; Figure 4 It is a partial structural diagram of the control knob of the present invention; Figure 5 It is a partial structural diagram of the control knob of the present invention; Figure 6 It is a partial structural diagram of the control knob of the present invention; Figure 7 It is a partial structural diagram of the control knob of the present invention; Figure 8 It is a partial structural diagram of the control knob of the present invention; Fig. 9 It is a partial structural diagram of the control knob of the present invention; Fig.10 It is a partial structural diagram of the control knob of the present invention; Fig.11 The partial structure diagram of the control knob of the present invention. As shown in the figure, a control knob and its intelligent toilet, wherein the control knob 70 comprises: a knob body 73 for sending a control signal, a knob support body 76 for supporting the knob body 73; the knob body 73 is connected to the knob support body 76 via a key shaft 734;

[0043] The cavity 730 of the knob body 73 is provided with a first signal transceiver 732a, a button 7323 and a magnetic induction component 7325, and the button 7323 can be pressed through the button shaft 734; the outer periphery of the knob body 73 is provided with a multipolar magnetic ring 7331 that can rotate around the magnetic induction component 7325, and the magnetic induction component 7325 can sense the change of the magnetic field to obtain the rotation information of the multipolar magnetic ring 7331; the first signal transceiver 732a is used to send a control signal according to the pressing information of the button or the rotation information of the multipolar magnetic ring. Specifically, the first signal transceiver 732a, the button 7323 and the magnetic induction component 7325 can be arranged on the knob PCB board 7321 in the cavity 730, and the button and the magnetic induction component are arranged on the side of the knob PCB board near the button shaft, and the multipolar magnetic ring is arranged around the outside of the knob PCB board, and the magnetic induction component can be a Hall sensor. If a button is set in the cavity, the user can press the knob body to make the button receive the pressing information of the button shaft, and the user can rotate the knob body to make the magnetic induction component receive the rotation information of the multi-pole magnetic ring. According to the pressing information or rotation information, the corresponding control signal can be sent through the control signal transmitter to conveniently control the smart toilet. The control signal sent is a wireless control signal, so the knob body can be used when it is not installed on the smart toilet, and it can also be fixedly installed on the smart toilet for use, which is more convenient and flexible for users to use.

[0044] The multipolar magnetic ring includes multiple "N poles" and multiple "S poles", and the number of "N poles" is the same as the number of "S poles". Specifically, as shown in the figure, the shaded part of the multipolar magnetic ring represents the "N pole" and the blank part represents the "S pole".

[0045] In a more specific embodiment, the knob body 73 includes a knob cover 731 connected to the knob support body 76 through the button shaft 734, a knob rotating sleeve 732 installed on the knob cover 731, and an annular knob rotating shell 733 arranged on the outer periphery of the knob rotating sleeve 732 and rotatable along the knob rotating sleeve 732; a concave button pad 7313 is fixedly provided on the knob cover 731, and the top end of the button shaft 734 is pushed into the concave button pad 7313; the knob rotating sleeve 732, the knob cover 731 and the concave button pad 7313 are combined to form the cavity 730; the multi-polar magnetic ring 7331 is fixedly provided on the knob rotating shell 733, specifically, the multi-polar magnetic ring 7331 is fixedly provided on the inner side of the knob rotating shell 733, wherein the cavity can be a sealed cavity or a non-sealed cavity. The cavity is provided with precision electronic components such as a knob PCB board, buttons, a knob display screen, a first signal transceiver, etc. Since the control knob transmits the control signal wirelessly, the control knob has no external wiring, and water or water vapor cannot enter the above-mentioned confined space when the user presses or rotates the knob body. That is, the smart toilet will not cause damage to the electronic components due to water or water vapor entering the above-mentioned confined space during use. This design can avoid affecting the sealing of the control knob due to external wiring, thereby greatly improving the safety and reliability of the control knob during use.

[0046] In a more specific embodiment, a key shaft fixing frame 762 is fixedly disposed in the knob support body 76, a fixing frame recessed hole 763 is disposed on the key shaft fixing frame 762, a key shaft through hole 7311 is disposed on the knob cover 731, a shaft sleeve 7312 is disposed in the key shaft through hole 7311, the key shaft 734 is fixed in the through hole of the shaft sleeve 7312 through a key shaft clamping ring 7344, and the key shaft 734 is inserted into the fixing frame recessed hole 763 and fixed so that the knob cover 731 is connected to the knob support body 76. The key shaft fixing frame 762 can be integrally formed with the knob support body 76, that is, the fixing frame recessed hole 763 is directly disposed in the knob support body 76. The key shaft clamping ring can firmly fix the key shaft in the through hole of the shaft sleeve and limit the key shaft from sliding axially in the shaft sleeve to prevent the key shaft from falling out of the shaft sleeve; the key shaft is inserted into the concave hole of the fixing frame and fixed, and the fixing method can be interference crimping or insert injection molding. The annular knob rotating shell is set on the outside of the knob rotating sleeve and can rotate along the outer circumference of the knob rotating sleeve. The knob rotating sleeve is pressed inward by external force to squeeze the knob cover. The shaft sleeve can slide axially in the key shaft through hole. The key shaft fixed on the key shaft fixing frame compresses the concave key pad and applies a reaction force to the concave key pad; when the pressing external force applied to the knob rotating sleeve is cancelled, the compressed and deformed concave key pad relaxes to restore its original shape and pushes the knob rotating sleeve outward to the initial position.

[0047] In a more specific embodiment, a knob display screen 7329 is further provided in the cavity 730, and a knob appearance screen 7328 is provided on the outside of the knob rotating sleeve 732. The knob display screen is used to issue prompt information to prompt the user. The knob appearance screen is a transparent layer that protects the knob display screen. The knob appearance screen can also preset a display pattern. The light emitted by the knob display screen can light up the preset display pattern to display the prompt information in conjunction with the knob appearance screen. In addition, the knob appearance screen can also be an appearance screen with a touch function. If no button is provided in the cavity, the knob appearance screen can replace the function of the button. By performing a touch operation on the knob appearance screen, the knob appearance screen can obtain the user's touch operation and generate pressing information.

[0048] When the user rotates the knob rotating shell, the multi-polar magnetic ring is driven to rotate. The magnetic induction component arranged on the knob PCB board senses the magnetic field change caused by the rotation of the multi-polar magnetic ring, and the rotation information of the multi-polar magnetic ring can be obtained. The control signal corresponding to the rotation information is transmitted through the first signal transceiver to control the smart toilet, and a prompt message is sent to the user through the knob display screen to realize rotation control; when the user presses the knob rotating sleeve, the knob rotating sleeve drives the knob cover to move along the axial direction of the key shaft and compresses and deforms the concave key pad, and the key shaft fixing frame applies a reaction force to the key shaft. Under the action of the reaction, the key shaft presses the key on the knob PCB board through the concave key pad, and the key receives the pressing information, and the control signal corresponding to the pressing information is transmitted through the first signal transceiver to control the smart toilet, and a prompt message is sent to the user through the knob display screen to realize pressing control.

[0049] In a more specific embodiment, a knob battery 7327 is also provided in the cavity 730, and the knob battery can power the electronic components in the control knob. The knob battery can be a non-rechargeable chemical battery such as a zinc-manganese battery, a silver oxide battery, or a rechargeable battery such as a lithium-ion battery, a silver-zinc battery, etc.

[0050] In a more specific embodiment, a charging receiving coil 7314 is also provided in the cavity 730. If a knob battery is not provided in the cavity, the charging receiving coil can power the electronic components in the control knob through the received electrical energy; if a knob battery is provided in the cavity, the knob battery can be electrically connected to the charging receiving coil to charge the knob battery by receiving electrical energy through the charging receiving coil.

[0051] A smart toilet, comprising a ceramic body 11, a host body 13, and the above-mentioned control knob 70, wherein the host body 13 comprises a host base 131 and a host shell 132 that can be installed on the host base 131, the host base 131 is fixedly arranged on the ceramic body 11, the control knob 70 is fixedly arranged on the host shell 132, and a knob base 75 for connecting with the knob support body 76 is fixedly arranged on the host shell 132.

[0052] The bottom end of the groove of the knob support 76 is provided with a first connection part, and a second connection part is fixedly provided on the knob base 75 at a position corresponding to the first connection part, and the knob support 76 and the knob base 75 are connected through the first connection part and the second connection part. Specifically, the first connection part can be a knob magnetic body 761, and the second connection part can be a magnet 752, and the knob support 76 and the knob base 75 are connected through the magnetic attraction of the knob magnetic body 761 and the magnet 752; the first connection part can also be a plug, and the second connection part can be a socket, and the knob support and the knob base are connected by inserting the plug into the socket.

[0053] Specifically, the knob base is fixedly arranged on the inner side of the main cover plate, and the knob base 75 is provided with a knob support groove 751 and a knob drive assembly 754. Specifically, the knob support groove is adapted to the knob support body, and the knob support body is placed in the knob support groove, so that the knob magnetic body is attracted to the magnet, and the knob body and the knob base are firmly connected by the magnetic attraction force. At this time, the knob body is fixedly installed on the smart toilet.

[0054] The knob base 75 is also provided with a charging transmitting coil 753. The knob driving assembly is used to drive the charging transmitting coil to work, and the charging transmitting coil is used to transmit electric energy to the charging receiving coil by wireless power transmission, and the charging receiving coil receives the electric energy transmitted by the charging transmitting coil.

[0055] In a specific embodiment, the inner wall of the knob support groove 751 is further provided with an anti-skid protrusion 7511. The anti-skid protrusion can prevent the knob support body from sliding in the knob support groove when the user rotates the knob rotation housing, so as to improve the accuracy of the user's rotation control through the control knob.

[0056] In a specific embodiment, the knob driving assembly 754 includes a knob driving bracket 7541 and a knob driving cover 7542 mounted on the knob driving bracket 7541, and the knob driving assembly 754 also includes a second signal transceiver 7543 mounted on the knob driving bracket 7541. The second signal transceiver is used to receive the control signal sent by the first signal transceiver. In addition, the second signal transceiver can also send a command signal containing a control command to the first signal transceiver, and the first signal receiver receives the command signal to control the electronic components in the knob body.

[0057] In a specific embodiment, a driving PCB board 7544 is fixedly arranged on the knob driving bracket 7541, and a base LED lamp 7545 is arranged on the driving PCB board 7544, and the base LED lamp 7545 is connected to a base light guide bar 7512 arranged on the periphery of the knob supporting groove 751. In order to enhance the effect of the intelligent toilet to prompt the user when receiving the control signal, the base LED lamp can be lit by the driving PCB board, and the base light guide bar connected to the base LED lamp can send a light prompt information to the user to enhance the effect of prompting the user.

[0058] In a specific embodiment, the knob driving assembly 754 also includes a driving motor 7546 arranged at the lower end of the knob driving bracket 7541, a driving gear 7547 fixedly connected to the driving motor 7546, and a ring gear 7548 arranged at the outside of the knob supporting groove 751 and connected to the driving gear teeth. The outer wall of the knob supporting groove 751 is also provided with a supporting groove push rod 7513, and the outer wall of the ring gear 7548 is provided with a spiral groove 7549. The supporting groove push rod 7513 can be spirally rotated along the spiral groove 7549 in the spiral groove 7549. A limiting shaft 7514 is also provided at the lower end of the knob supporting groove 751, and the limiting shaft 7514 passes through a limiting shaft sleeve 755 arranged on the knob base 75. The limiting shaft sleeve and the limiting shaft cooperate with each other to limit the knob support groove to move only in the vertical direction. The driving motor drives the driving gear to rotate, and the driving gear drives the ring gear connected to the gear to rotate. The support groove push rod set on the rotating support groove rotates spirally along the spiral groove. Since the rotating support groove is limited to move only in the vertical direction, the spiral groove can push the rotating support groove to move upward or downward in the vertical direction when the ring gear rotates. The knob support groove pushes the knob body placed in the knob support groove to move in the vertical direction. Specifically, when the knob body needs to be taken out, the knob drive assembly can be used to push the knob body out to facilitate the removal of the knob body; when the knob body is installed on the knob base for use, the knob drive assembly can be used to shrink the knob body to make the combination of the knob body and the knob base more stable and make the control knob more beautiful.

[0059] The control knob and the smart toilet of the present invention connect the knob body and the knob support body through the button shaft. The cavity of the knob body is provided with a first signal transceiver, a button and a magnetic induction component, and the button can be pressed through the button shaft; the outer periphery of the knob body is provided with a multi-pole magnetic ring that can rotate around the magnetic induction component, and the magnetic induction component senses the change of the magnetic field to obtain the rotation information of the multi-pole magnetic ring, and the first signal transceiver sends a control signal according to the pressing information of the button or the rotation information of the multi-pole magnetic ring. The knob body can be used when it is not installed on the smart toilet, and the smart toilet can be accurately controlled by sending pressing information or rotation information, ensuring that the user can use the control knob more conveniently and flexibly to start the required function, greatly improving the convenience of the control knob during use, and achieving good use effect in actual application.

[0060] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0061] It should be understood that the above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present invention, and these modifications or replacements should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A control knob, characterized in that: include: A knob body (73) for sending a control signal, and a knob support body (76) for supporting the knob body (73); The knob body (73) is connected to the knob support body (76) via a key shaft (734); A first signal transceiver (732a) and a magnetic induction component (7325) are arranged in the cavity (730) of the knob body (73); a multipolar magnetic ring (7331) rotatable around the magnetic induction component (7325) is arranged on the outer periphery of the knob body (73); the magnetic induction component (7325) can sense changes in the magnetic field to obtain rotation information of the multipolar magnetic ring (7331); The first signal transceiver (732a) is used to send a control signal according to the pressing information or the rotation information of the multi-polar magnetic ring (7331); A button (7323) is also provided in the cavity (730), and the button (7323) can be pressed by the button shaft (734) to output the pressing information to the first signal transceiver (732a); The knob body (73) comprises a knob cover (731) connected to the knob support body (76) via the button shaft (734), a knob rotating sleeve (732) mounted on the knob cover (731), and an annular knob rotating shell (733) arranged on the outer periphery of the knob rotating sleeve (732) and rotatable along the knob rotating sleeve (732); the multi-polar magnetic ring (7331) is fixedly arranged on the knob rotating shell (733); A concave key pad (7313) is fixedly provided on the knob cover (731), and the top end of the key shaft (734) is pushed into the concave key pad (7313); the knob rotating sleeve (732), the knob cover (731) and the concave key pad (7313) are combined to form the cavity (730).

2. The control knob according to claim 1, characterized in that: The knob support body (76) is provided with a fixing frame recessed hole (763), the knob cover (731) is provided with a key shaft through hole (7311), a shaft sleeve (7312) is provided in the key shaft through hole (7311), the key shaft (734) is fixed in the through hole of the shaft sleeve (7312) via a key shaft clamping ring (7344), the key shaft (734) is inserted into the fixing frame recessed hole (763) and fixed so that the knob cover (731) is connected to the knob support body (76).

3. The control knob according to claim 2, characterized in that: A key shaft fixing frame (762) is fixedly arranged inside the knob support body (76), and the key shaft fixing frame (762) is provided with the fixing frame concave hole (763).

4. The control knob according to claim 1, characterized in that: A knob display screen (7329) is also provided in the cavity (730), and a knob appearance screen (7328) is provided on the outside of the knob rotating sleeve (732), and the knob appearance screen (7328) is used to obtain the user's touch operation to generate the pressing information and output it to the first signal transceiver (732a).

5. The control knob according to claim 1, characterized in that: A knob battery (7327) is also disposed in the cavity (730).

6. The control knob according to claim 1 or 4, characterized in that: A charging receiving coil (7314) is also provided in the cavity (730).

7. An intelligent toilet, characterized in that: It comprises a ceramic body (11), a host body (13) and a control knob (70) as claimed in any one of claims 1 to 5; The host body (13) comprises a host base (131) and a host casing (132) which can be mounted on the host base (131); The host base (131) is fixedly arranged on the ceramic body (11), and the control knob (70) is fixedly arranged on the host housing (132); A knob base (75) for connecting to the knob support (76) is fixedly arranged on the main housing (132).

8. The intelligent toilet according to claim 7, characterized in that: A first connection portion is provided at the bottom end of the groove of the knob support body (76), and a second connection portion is fixedly provided on the knob base (75) at a position corresponding to the first connection portion, and the knob support body (76) and the knob base (75) are connected via the first connection portion and the second connection portion.

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