Foot controller for dental chair

Abstract

The present invention relates to a foot controller for a dental comprehensive treatment chair that can easily and conveniently adjust the inflow of air supplied to treatment tools on the dental comprehensive treatment chair. The present invention provides a foot controller for a dental comprehensive treatment chair, which includes: an air valve for controlling the flow of air supplied to treatment tools arranged on the dental comprehensive treatment chair; a cam block arranged below a valve stem on the air valve and having an inclined surface; a pedal portion arranged at a position separated from the cam block by a predetermined distance and capable of rotating leftward and rightward and moving up and down by an external force; and a connecting portion for connecting the cam block and the pedal portion so that the cam block moves with the movement of the pedal portion.

Description

Technical Field

[0001] The present invention relates to a foot controller for a dental comprehensive treatment chair, and more particularly to a foot controller for a dental comprehensive treatment chair, by which an operator can easily and conveniently adjust the inflow of air supplied to treatment tools on the dental comprehensive treatment chair. Background Art

[0002] Generally, dental diagnosis and treatment are performed in the patient's oral cavity while the patient lies on a treatment chair.

[0003] The dental comprehensive treatment chair includes: a lighting device for illuminating the oral cavity; a doctor's tool table for placing various treatment tools; a display arm of the comprehensive treatment chair, which is equipped with a display to display the inside of the oral cavity, display CT image information or watch TV, etc.; a water supply device; and a table for the convenience of patients.

[0004] The various devices or instruments installed on the comprehensive treatment chair are configured to have a good movement route and be easy to operate, so as to provide the patient or operator with a movement route and convenience and sufficient functions during the operation.

[0005] On the other hand, when the operator treats a subject located on a comprehensive treatment chair, a foot controller is generally used to operate various tools such as a mobile phone provided on the comprehensive treatment chair, and the chair for the subject who is sitting or lying, with the foot. Summary of the invention

[0006] Technical issues

[0007] An object of the present invention is to provide a foot controller for a dental treatment chair, which allows an operator to easily and conveniently adjust the inflow of air supplied to treatment tools on the dental treatment chair.

[0008] Technical Solution

[0009] A foot controller for a dental unit chair according to one form of the present invention is used to control treatment tools installed on a dental unit chair, and includes: an air valve for controlling the flow of air supplied to the treatment tools; a cam block, which is arranged below a valve stem provided in the air valve and has an inclined surface; a pedal portion, which is arranged at a position separated from the cam block by a predetermined distance and can be rotated left and right and moved up and down by an external force; and a connecting portion, which is used to connect the cam block and the pedal portion so that the cam block moves with the movement of the pedal portion.

[0010] In one embodiment of the present invention, the foot controller for a dental unit chair according to one aspect of the present invention may further include a track for guiding the left-right rotation of the pedal portion.

[0011] Here, the left-right rotation range of the pedal part may be limited by the length of the rail.

[0012] In one embodiment of the present invention, the air valve and the cam block may be configured such that when the cam block rotates left and right along with the left and right rotation of the pedal portion, the valve stem of the air valve is always located above the inclined surface.

[0013] In one embodiment of the present invention, the air valve and the cam block may be arranged such that the distance between the inclined surface and the valve stem is changed by the left-right rotation of the connecting portion in accordance with the left-right rotation of the pedal portion.

[0014] In one embodiment of the present invention, the air valve and the cam block may be configured to press or release the valve stem by the connection portion moving up and down along with the up and down movement of the pedal portion.

[0015] In one embodiment of the present invention, the degree of pressing of the valve stem may be changed according to a position of the pedal portion moving downward within a left-right rotation range of the pedal portion.

[0016] In one embodiment of the present invention, the air valve adjusts the amount of air supplied to the treatment tool according to a change in the degree of pressing of the valve stem.

[0017] In one embodiment of the present invention, an elastic member may be further included. When the pedal part moves downward under the action of an external force and the external force disappears, the elastic member provides a restoring force to return the pedal part to its original position.

[0018] Here, the elastic member may be disposed on the connecting portion.

[0019] In one embodiment of the present invention, the connection portion may be configured such that the pedal portion is located above the base of the cam block in a vertical direction.

[0020] Technical Effects

[0021] According to the foot controller for a dental unit chair of the present invention, an operator can easily and conveniently adjust the inflow rate of air supplied to treatment tools on the dental unit chair.

[0022] However, the scope of the present invention is not limited to the above-mentioned effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1The present invention is applied to a dental comprehensive treatment chair according to an example.

[0024] Figure 2 and Figure 3 FIG. 4 is an appearance diagram of a foot controller according to an embodiment of the present invention.

[0025] Figure 4 is a block diagram of a foot controller according to an embodiment of the present invention.

[0026] Figure 5 1 is a diagram showing the concept of wireless communication between the foot controller 20 and the dental unit 10 according to an embodiment of the present invention.

[0027] Figure 6 1 is a diagram showing the concept of wired communication between the foot controller 20 and the dental unit 10 according to an embodiment of the present invention.

[0028] Figure 7 and Figure 8 FIG. 1 is a diagram showing an example of the internal structure of a foot controller according to an embodiment of the present invention.

[0029] Figures 9 to 11 is a perspective view of a foot controller according to an embodiment of the present invention.

[0030] Fig.12 FIG. 1 is a side view of a foot controller according to an embodiment of the present invention, showing partial components.

[0031] Figures 13 to 15 This is a diagram showing a state where the pedal portion is located exactly in the center with respect to the rail.

[0032] Fig.16 and Fig.17 This is a diagram showing a state in which the pedal portion rotates counterclockwise with respect to the track.

[0033] Fig.18 and Fig.19 This is a diagram showing a state in which the pedal portion rotates clockwise with respect to the track.

[0034] Description of Reference Numerals

[0035] 10: Dental treatment chair 20: Foot controller

[0036] 30: pedal track 40: cam block

[0037] 41: Inclined surface 50: Air valve

[0038] 51: Valve stem 60: Connection part

[0039] 62: Elastic member 100: Power supply unit

[0040] 110: Communications Department 111: Wired Communications Department

[0041] 112: Wireless communication unit 120: Input unit

[0042] 121: pedal part 122: switch part

[0043] 130: Terminal part 140: Cover part

[0044] 150: Flow rate adjustment unit 160: Control unit Embodiment of the invention

[0045] The effects of the foot controller for a dental comprehensive treatment chair according to the present invention on the technical structure including the above-mentioned objects will be clearly understood by referring to the following detailed description with reference to the accompanying drawings showing preferred embodiments of the present invention.

[0046] The following content is merely an example to illustrate the principles of the present invention. Therefore, although not explicitly described or illustrated in this specification, a person skilled in the art to which the present invention belongs can invent various devices that embody the principles of the present invention and are included in the concept and scope of the present invention. Moreover, all conditional terms and embodiments listed in this specification are provided in principle for the purpose of clearly understanding the concept of the present invention, and therefore, it should be understood that the present invention is not limited to the specifically listed embodiments and states.

[0047] Furthermore, it should be understood that not only the principles, viewpoints and embodiments of the present invention, but also all detailed descriptions of specific embodiments include structural and functional equivalents of the matters described. Furthermore, it should be understood that the equivalents include all elements to be invented in the future that have the same function regardless of their structure, except for currently known equivalents.

[0048] In the process of describing the present invention, if it is judged that the specific description of the relevant known technology will make the subject matter of the present invention unclear, the detailed description thereof will be omitted. In addition, the elements in the drawings are not necessarily drawn to scale. For example, in order to facilitate understanding of the embodiments of the present invention, the size of some components in the drawings is exaggerated compared with other components. In addition, the same reference numerals in different drawings represent the same components, and similar reference numerals may but do not necessarily represent similar components.

[0049] Thus, for example, it should be understood that the flowcharts in this specification show conceptual views of exemplary circuits that embody the principles of the present invention. Similarly, it should be understood that all flow charts, state transition diagrams, pseudo codes, etc. can be substantially embodied by computer-readable media, whether or not a computer or processor is explicitly shown, and represent various processing that can be executed by a computer or processor.

[0050] The functions of the various elements shown in the figure, including functional modules representing processing or similar concepts, are not only related to dedicated hardware, but also to appropriate software, so that hardware with the ability to execute software can be used. When provided by a processor, the functions can be provided by a single dedicated processor, a single shared processor, or multiple individual processors, some of which can be shared.

[0051] Furthermore, the explicit use of terms such as processing, control, or concepts similar to processing and control cannot be interpreted as exclusively referring to hardware capable of executing software, but should be understood to implicitly include digital signal processor (DSP) hardware, read-only memory (ROM) for storing software, random access memory (RAM), and non-volatile memory without limitation. Other conventional hardware may also be included.

[0052] In the scope of the invention claims of this specification, the constituent elements that are expressed as means for executing the functions described in the detailed description are intended to include, for example, all methods of the functions of a combination of circuit elements that execute the functions or all forms of software including firmware / microcode, etc., in a manner to execute the functions in combination with appropriate circuits for executing the software. In the present invention defined by the scope of the invention claims, the functions provided by a plurality of means are combined and combined in the manner required by the scope of the invention claims, and therefore, it should be understood that any means that can provide the functions are also equivalent to the functions grasped from this specification.

[0053] The objects, features and advantages will become more apparent through the following detailed description in conjunction with the accompanying drawings, so that those skilled in the art can easily implement the technical concept of the present invention.

[0054] Hereinafter, various embodiments according to the technical concept of the present invention will be described in detail with reference to the accompanying drawings.

[0055] Figure 1 The figure shows the appearance of a dental comprehensive treatment chair according to an example to which the present invention is applied.

[0056] The dental comprehensive treatment chair 10 may basically include a seat for placing the legs of the examinee, a backrest for the examinee to lean on, and a headrest for supporting the head of the examinee.

[0057] An armrest for placing the subject's arm may be formed on at least one side of the backrest and the seat.

[0058] Furthermore, the dental comprehensive treatment chair 10 may include a base for supporting the seat, a driving unit for driving at least one of the backrest and the seat, and a control unit for controlling the driving unit.

[0059] Furthermore, the dental comprehensive treatment chair 10 may include at least one of a lighting unit for illuminating the subject, a water supply unit for supplying mouthwash for the subject to rinse his mouth, a control unit, a display unit, a foot control unit (Foot Control Unit) 20, and a power supply unit.

[0060] In addition, the dental complex chair 10 may include a workbench.

[0061] A representative example of the workbench is a doctor's tool table, on which various instruments used for dental diagnosis and treatment are placed.

[0062] For example, the workbench may place surgical instruments, medical records, etc. for treating a patient visiting the dentistry, or may be provided with an interface for operating instruments.

[0063] At least one of electricity, gas pressure, and hydraulic pressure for operating the surgical instrument can be supplied on the workbench. For example, the supplied electricity can be used to turn on a dental light of one of the surgical instruments.

[0064] In addition, the workbench may include various switches. Considering the position of the operator, the workbench may be located at a distance that the operator can easily reach.

[0065] Therefore, the workbench may be provided with various switches for controlling each part of the dental unit chair 10 .

[0066] Figure 2 and Figure 3 FIG. 4 is an appearance diagram of a foot controller according to an embodiment of the present invention. Figure 4 is a block diagram of a foot controller according to an embodiment of the present invention.

[0067] refer to Figures 2 to 4 According to an embodiment of the present invention, the foot controller 20 may include a power supply unit 100 , a communication unit 110 , an input unit 120 , a terminal unit 130 , a cover unit 140 , a flow adjustment unit 150 and a control unit 160 .

[0068] The power supply unit 100 supplies necessary power to each component of the foot controller 20. Here, the power supply unit 100 may include a rechargeable battery.

[0069] The communication unit 110 is a module for communicating with the dental treatment chair 10 , and includes at least one of a wired communication unit 111 for wired communication with the dental treatment chair 10 and a wireless communication unit 112 for wireless communication with the dental treatment chair 10 .

[0070] As described above, the dental comprehensive treatment chair 10 includes a plurality of objects, such as a seat, a backrest, a lighting device, and a treatment tool.

[0071] The treatment tools include, for example, a high-speed handpiece, a low-speed handpiece, a three-way syringe, and a dental scaler.

[0072] That is, the communication unit 110 may perform a function of transmitting a control signal generated at the foot controller 20 to the dental unit chair 10 to control the plurality of objects.

[0073] Figure 5 1 is a diagram showing the concept of wireless communication between the foot controller 20 and the dental unit 10 according to an embodiment of the present invention.

[0074] The wireless communication mentioned in this specification includes short-range wireless communication, including ZigBee, Bluetooth, etc. However, the wireless communication mentioned in this specification is not limited thereto.

[0075] Figure 6 1 is a diagram showing the concept of wired communication between the foot controller 20 and the dental unit 10 according to an embodiment of the present invention.

[0076] like Figure 6 As shown, when the dental comprehensive treatment chair 10 and the foot controller 20 are in wired communication, the dental comprehensive treatment chair 10 can supply power to the foot controller 20 through a cable. At this time, the battery disposed in the foot controller 20 can be charged.

[0077] The wired communication mentioned in this specification may include at least one of a local area network (LAN), Ethernet, and Wi-Fi. However, the wired communication mentioned in this specification is not limited thereto.

[0078] The input unit 120 may receive a command for controlling the plurality of objects provided in the dental complex 10 .

[0079] like Figure 3 and Figure 4 As shown, the input unit 120 may include a pedal unit 121 and a switch unit 122 .

[0080] The user may input a specific command by rotating the pedal part 121 left and right with the foot and then stepping on the pedal part 121 at a specific position.

[0081] In addition, the user may input a command assigned to the first switch 122a or the second switch 122b by stepping on the switch portions 122a, 122b.

[0082] The terminal portion 130 is connected to a wired communication cable for wired communication with the dental comprehensive treatment chair 10 .

[0083] The cover portion 140 is used to cover the terminal portion 130 with a cover or the like to protect components from dust or the like.

[0084] The flow rate adjustment unit 150 may adjust the flow rate of air flowing into the treatment tools provided in the dental unit 10 .

[0085] To this end, the flow regulating unit 150 may include a cam block 40 and an air valve 50. The flow regulating unit 150 will be described in detail below with reference to the accompanying drawings.

[0086] The control unit 160 may control the overall operation of the foot controller 20 according to an embodiment of the present invention, and manage information or data flows between each component.

[0087] Therefore, the control unit 160 may include at least one processor having a central processing unit (CPU) / microprocessor (MPU) in hardware, an execution memory (for example, registers and / or random access memory (RAM)), and a bus (or internal cable) for inputting and outputting predetermined data.

[0088] In addition, the control unit 160 may include a predetermined routine and / or program data loaded from a predetermined recording medium into the execution memory and processed by the processor to execute various actions and functions of the foot controller 20 according to an embodiment of the present invention in software.

[0089] In addition, for example, more specifically, the control unit 160 may control all or part of the power supply unit 100 , the communication unit 110 , the input unit 120 , the terminal unit 130 , the cover unit 140 , and the flow rate adjustment unit 150 .

[0090] For example, the control unit 160 may send the command received through the input unit 120 to the dental comprehensive treatment chair 10 through the communication unit 110 .

[0091] The dental treatment chair 10 is also provided with other communication units. The communication units provided on the dental treatment chair 10 are also provided with wired communication modules and wireless communication modules, just like the foot controller 20 .

[0092] Figure 7 and Figure 8 FIG. 1 is a diagram showing an example of the internal structure of a foot controller according to an embodiment of the present invention.

[0093] Figures 9 to 11 is a perspective view of a foot controller according to an embodiment of the present invention. In particular, Fig.10 is a top perspective view of a foot controller according to an embodiment of the present invention, Fig.11 4 is a front perspective view of a foot controller according to an embodiment of the present invention. Fig.12 FIG. 1 is a side view of a foot controller according to an embodiment of the present invention, showing partial components.

[0094] The air valve 50 may perform a function of controlling the flow rate of air supplied to the treatment tool provided in the dental unit 10. The RPM of the treatment tool may be controlled by controlling the flow rate of air supplied to the treatment tool.

[0095] An air inlet pipe and an air outlet pipe are connected to the air valve 50 , and air can be supplied to the treatment tool through the air outlet pipe.

[0096] like Fig.11 As shown, the air valve 50 may include a valve stem 51. The flow rate of air supplied to the treatment tool may be changed according to the degree of pressing of the valve stem 51.

[0097] Since the structures of the air valve 50 and the valve stem 51 disposed therein and the operations thereof are known per se, further detailed description thereof will be omitted.

[0098] like Fig.11 and Fig.12 As shown, the cam block 40 has an inclined surface 41 and is disposed below the valve stem 51 .

[0099] That is, Fig.11 As shown, the cam block 40 has an inclined surface 41, one side of its upper surface (for example, Fig.11 The right side in the example above) gradually lowers toward the ground.

[0100] Fig.11 Shown in Fig.10 Components when looking from the pedal portion 121 toward the flow adjustment portion 150.

[0101] In addition, if Fig.11As shown, the cam block 40 may form the inclined surface 41 on a portion of the upper surface instead of the entire upper surface, or the inclined surface may be formed on the entire upper surface of the cam.

[0102] In addition, if Fig.10 and Fig.12 As shown, the pedal part 121 is disposed at a position separated by a predetermined distance from the cam block 40 provided in the flow rate adjustment part 150 , and can be rotated left and right and moved up and down by an external force as described above.

[0103] For example, the operator may rotate the pedal part 121 left and right with the foot, or step on the pedal part 121 at a specific position with the foot to move the pedal part 121 up and down.

[0104] In addition, if Fig.12 As shown, the foot controller 20 according to an embodiment of the present invention may further include a connecting portion 60 for connecting the pedal portion 121 and the cam block 40, so that the cam block 40 moves with the movement of the pedal portion 121 (ie, left-right rotation or up-and-down movement).

[0105] Therefore, when the pedal part 121 rotates left and right, the cam block 40 rotates left and right in conjunction with the pedal part 121 through the connection part 60 , and when the pedal part 121 moves up and down, the cam block 40 moves up and down in conjunction with the pedal part 121 .

[0106] Below, reference Figures 16 to 19 Specifically, the cam block 40 rotates left and right and moves up and down as the pedal portion 121 rotates left and right and moves up and down.

[0107] In addition, the connection portion 60 may be configured such that the pedal portion 121 is located above the base of the cam block 40 in the vertical direction, but the present invention is not limited thereto.

[0108] For example, refer to Fig.12 The pedal portion 121 is disposed at a position farther from the ground than the base of the cam block 40. The relative positions of the pedal portion 121 and the cam block 40 may vary according to the structure of the connecting portion 60 (eg, the shape of the connecting portion 60).

[0109] The connection portion 60 may be made of a metal material having a predetermined thickness to firmly connect the pedal portion 121 and the cam block 40 , but is not limited thereto.

[0110] like Fig.12 As shown, the foot controller 20 according to an embodiment of the present invention may further include an elastic member 62 .

[0111] The elastic member 62 can provide a restoring force so that after the pedal portion 121 moves downward due to an external force (for example, when an operator steps on the pedal portion 121 with his foot), the pedal portion 121 returns to its original position when the external force disappears (for example, when the operator removes his foot from the pedal portion 121).

[0112] like Fig.12 As shown, the elastic member 62 may be disposed on the connecting portion 60 .

[0113] In addition, if Fig.10 As shown, the foot controller 20 according to an embodiment of the present invention may further include a track 30 for guiding the pedal part 121 to rotate left and right.

[0114] When the pedal portion 121 rotates left and right, Fig.10 and Fig.13 As shown, the range of left and right rotation may be limited by the length of the track 30 .

[0115] For example, Fig.10 As shown, the pedal portion 121 can be rotated 12 degrees to the left and 12 degrees to the right, but it is certainly not limited to this. Fig.10 The 12 degrees on the left and 12 degrees on the right shown in FIG. 1 are only examples.

[0116] On the other hand, when the cam block 40 rotates left and right along with the left and right rotation of the pedal portion 121 , the air valve 50 and the cam block 40 may be arranged in such a manner that the valve stem 51 of the air valve 50 is always located above the inclined surface 41 formed on the cam block 40 .

[0117] This is because, when the operator steps on the pedal portion 121 with his foot (the pedal portion 121 moves downward), the cam block 40 moves upward through the connecting portion 60 to press the valve stem 51 .

[0118] In addition, the air valve 50 and the cam block 40 may be configured such that the distance between the inclined surface 41 and the valve stem 51 is changed by the connection portion 60 rotating left and right along with the left and right rotation of the pedal portion 121. Figures 16 to 19 This is explained in more detail.

[0119] Figures 13 to 15 This is a diagram showing a state where the pedal portion is located exactly in the center with respect to the rail.

[0120] When the pedal portion 121 is located at the center of the track 30 ( Fig.13In the figure, when the operator does not step on the pedal portion 121, the vertical distance between the inclined surface 41 and the valve stem 51 is Z1 (reference Fig.15 ).

[0121] Fig.16 and Fig.17 This is a diagram showing a state in which the pedal portion rotates counterclockwise with respect to the track.

[0122] refer to Fig.16 and Fig.17 When the operator rotates the pedal portion 121 to the left and does not step on the pedal portion 121 with his foot, the vertical distance between the inclined surface 41 and the valve stem 51 is Z2 (reference Fig.17 ).

[0123] Fig.18 and Fig.19 This is a diagram showing a state in which the pedal portion rotates clockwise with respect to the track.

[0124] refer to Fig.18 and Fig.19 When the operator rotates the pedal portion 121 to the right and does not step on the pedal portion 121 with his foot, the vertical distance between the inclined surface 41 and the valve stem 51 is Z3 (reference Fig.19 ).

[0125] Attention Fig.15 , Fig.17 , Fig.19 This is a diagram when the cam block 40 is viewed from the pedal portion 121 side.

[0126] For example, Fig.16 As shown, when the operator rotates the pedal portion 121 to the left, as shown in Fig.17 As shown, the valve stem 51 is located on the right side of the cam block 40 .

[0127] In addition, for example, Fig.18 As shown, when the operator rotates the pedal portion 121 to the right, as shown in Fig.19 As shown, the valve stem 51 is located on the left side of the cam block 40 .

[0128] Here, when comparing the distances of Z1, Z2, and Z3, the Z2 value is the largest and the Z3 value is the smallest.

[0129] As described above, the air valve 50 and the cam block 40 are configured to move up and down through the connection portion 60 as the pedal portion 121 moves up and down, thereby pressing or releasing the valve stem 51 .

[0130] In addition, the degree of pressing of the valve stem 51 may be changed according to the position of the pedal portion 121 that moves downward within the left-right rotation range of the pedal portion 121 .

[0131] The air valve 50 adjusts the amount of air supplied to the treatment tool according to a change in the degree of pressing of the valve stem 51 .

[0132] At the same time, the up-and-down movement of the pedal portion 121 may be limited, as may the left-and-right rotation range.

[0133] For example, the pedal portion 121 is in a state separated from the ground or a base constituting the lower end of the foot controller 20 (when the operator is not stepping on the pedal portion 121), and the up and down movement range is limited by moving downward only until it contacts the ground or the base.

[0134] However, the vertical movement range of the pedal portion 121 may also be limited by various mechanical structures of the foot controller 20 .

[0135] For example, Fig.12 As shown, the pedal portion 121 can move (rotate) 5 degrees in the vertical direction (Z axis). Of course, the limit range of the up and down movement (rotation) of the pedal portion 121 is not limited to the above 5 degrees. Below, for the convenience of explanation, it is assumed that the pedal portion 121 moves (rotates) 5 degrees up and down.

[0136] An example of adjusting or changing the air supply amount of the air valve 50 by pressing the valve stem 51 is as follows.

[0137] For example, refer to Figures 13 to 15 When the operator steps on the pedal portion 121 while the pedal portion 121 is located exactly in the center of the track 30, the cam block 40 presses the valve stem 51 by a distance corresponding to an angle obtained by subtracting an angle corresponding to Z1 from 5 degrees (hereinafter referred to as "D1").

[0138] Here, the air valve 50 supplies air to the treatment tool at a flow rate corresponding to D1.

[0139] In addition, for example, reference Fig.16 and Fig.17 When the operator steps on the pedal portion 121 when the pedal portion 121 is located on the left side relative to the track 30, the cam block 40 presses the valve stem 51 by a distance corresponding to an angle obtained by subtracting an angle corresponding to Z2 from 5 degrees (hereinafter referred to as "D2").

[0140] Here, the air valve 50 supplies air to the treatment tool at a flow rate corresponding to D2.

[0141] Of course, since Z2 is greater than Z1, D2 is less than D1.

[0142] In addition, for example, reference Fig.18 and Fig.19 When the operator steps on the pedal portion 121 while the pedal portion 121 is located on the right side relative to the track 30, the cam block 40 presses the valve stem 51 by a distance corresponding to an angle obtained by subtracting an angle corresponding to Z3 from 5 degrees (hereinafter referred to as "D3").

[0143] Here, the air valve 50 supplies air to the treatment tool at a flow rate corresponding to D3.

[0144] Of course, since Z3 is smaller than Z1, D3 is larger than D1.

[0145] In the above manner, the operator uses his feet to rotate the pedal part 121 left and right and / or move it up and down, so that the flow rate of air supplied to the treatment tools in the dental comprehensive treatment chair through the air valve 50 can be adjusted.

[0146] Throughout this specification, references to various variations of expressions such as "one embodiment" or the like of the principles of the present invention are associated with the embodiment, meaning that a particular feature, structure, characteristic, etc. is included in at least one embodiment of the principles of the present invention.

[0147] Therefore, the expression "in one embodiment" and any other variations disclosed throughout the specification do not refer to all the same embodiments.

[0148] Where a method is described in this specification as comprising a series of steps, the order in which the steps are presented is not the order in which the steps may be performed, any step may be omitted and / or any other steps may be added.

[0149] In addition, in this specification, unless otherwise specified in the text, the singular also includes the plural. In addition, the constituent elements, steps, operations and elements mentioned by "comprising" or "containing" used in this specification mean the existence or addition of one or more other constituent elements, steps, operations, elements and devices.

[0150] Above, the preferred embodiments of the present invention are described in detail. All embodiments and conditional examples disclosed in this specification are used to help those skilled in the art understand the principles and concepts of the present invention. Those skilled in the art should understand that the present invention can be implemented in a deformed form without departing from the essential features of the present invention. Therefore, the disclosed embodiments should be considered illustrative rather than restrictive.

[0151] The scope of the present invention is indicated by the scope of claims rather than the above description, and all differences within the scope equivalent to the claims are intended to be included in the present invention.

Claims

1. A foot controller for a dental comprehensive treatment chair, which is used to control treatment tools arranged on the dental comprehensive treatment chair, wherein: include: An air valve for controlling the flow of air supplied to the treatment tool; A cam block is disposed below a valve stem provided in the air valve and has an inclined surface; A pedal part is arranged at a position separated from the cam block by a predetermined distance and can be rotated leftward and rightward and moved up and down by an external force; as well as a connecting portion, used to connect the cam block and the pedal portion, so that the cam block moves with the movement of the pedal portion, The air valve and the cam block are configured such that the distance between the inclined surface and the valve stem is changed by the connection portion rotating left and right along with the left and right rotation of the pedal portion. The degree of pressing of the valve stem varies according to the position of the pedal portion moved downward in the left-right rotation range of the pedal portion.

2. The foot controller for a dental comprehensive treatment chair according to claim 1, wherein: The utility model also includes a track for guiding the left-right rotation of the pedal part.

3. The foot controller for a dental comprehensive treatment chair according to claim 2, wherein: The left-right rotation range of the pedal part is limited by the length of the rail.

4. The foot controller for a dental comprehensive treatment chair according to claim 1, wherein: The air valve and the cam block are arranged so that when the cam block rotates left and right along with the left and right rotation of the pedal portion, the valve stem of the air valve is always located above the inclined surface.

5. The foot controller for a dental comprehensive treatment chair according to claim 1, wherein: The air valve and the cam block are configured to press or release the valve stem by moving up and down the connecting portion in accordance with the up and down movement of the pedal portion.

6. The foot controller for a dental comprehensive treatment chair according to claim 1, wherein: The air valve adjusts the amount of air supplied to the treatment tool according to a change in the degree of pressing of the valve stem.

7. The foot controller for a dental comprehensive treatment chair according to claim 1, wherein: It also includes an elastic member, which provides a restoring force to return the pedal part to its original position when the external force disappears after the pedal part moves downward under the action of the external force. The elastic component is configured on the connecting portion.

8. The foot controller for a dental comprehensive treatment chair according to claim 1, wherein: The connection portion is configured such that the pedal portion is located above the base of the cam block in a vertical direction.

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