Foot switch capable of adjusting rotating speed of dental handpiece

Abstract

The utility model belongs to the technical field of medical instruments, and relates to a pedal switch capable of adjusting the rotating speed of a dental handpiece, which comprises a bottom plate, a supporting seat and a rotating seat are arranged on the bottom plate, a rotating assembly is arranged on the rotating seat, a deflector rod is hinged to the rotating assembly, and an induction plate is fixedly connected to the top of the deflector rod. The supporting seat and the rotating seat are fixedly connected with a circuit board matched with the induction plate, and a shell is arranged on the bottom plate. The driving lever can realize left-right and up-down driving, the left-right movement of the driving lever drives the contact area of the induction plate and the circuit board to change, the precise change of the driving current of the dental handpiece is controlled, the precise control of the rotating speed of the dental handpiece is further realized, and the up-down movement of the driving lever drives the contact state of the induction plate and the circuit board to change. According to the dental handpiece, on-off control of a circuit is achieved, starting and stopping of the dental handpiece are further achieved, the downward pressing force of the foot does not need to be controlled when the rotating speed is adjusted, and the stability of the rotating speed is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of medical apparatus and instruments, and relates to a pedal switch with adjustable rotating speed of dental handpiece. BACKGROUND

[0002] The existing medical pedal switch is mostly elastically connected with the pedal plate on the upper side of the button, controls the button by treading the pedal plate, and the spring drives the pedal plate to leave the button at the moment when the foot leaves the pedal plate. However, this structure can only control the on-off of the circuit, that is, the on-off operation of the motor of the power handle, and cannot adjust the rotating speed, so that the power and torque of the tool bit cannot be changed in the treatment process, and the operation has certain limitations.

[0003] The utility model discloses a medical pedal switch, including base, the base is connected with the pedal plate through the support seat rotation, the pedal plate bottom is equipped with the fender, and the base is equipped with the base parallel with fender, the base is equipped with the protruding piece that can displace along the horizontal direction, the protruding piece is equipped with the spring between the base and the protruding piece, and the fender is in contact with the protruding piece.

[0004] The existing technology has the following technical defects:

[0005] The above technical scheme controls the rotating speed by judging the depth of the stepped pedal, but needs to be fully concentrated during the treatment operation, and the rotating speed of the surgical instrument cannot be kept stable because the force on the foot needs to be controlled. INVENTION CONTENTS

[0006] The utility model wants to overcome the insufficient of prior art, provides a pedal switch with adjustable rotating speed of dental handpiece.

[0007] The utility model discloses a pedal switch with adjustable rotating speed of dental handpiece, including the bottom plate, is equipped with the support seat and the rotating seat on the bottom plate, is equipped with rotating assembly on the rotating seat, is hinged with the lever on rotating assembly, is fixedly connected with the inductive plate on the lever top, is fixedly connected with the circuit board that is suitable for inductive plate on the support seat and rotating seat, is equipped with the shell on the bottom plate.

[0008] Working process or working principle:

[0009] When using, the contact area of the inductive plate and the circuit board is changed by moving the lever to the left and right horizontally, the accurate change of the handpiece driving current is controlled, and the accurate control of the handpiece rotating speed is realized.

[0010] The rotating assembly comprises a rotating shaft rotatably connected to the rotating base, the rotating shaft is provided with an upper support, the rotating shaft is provided with an upper and lower reset hole and a pin hole hingedly connected with a push rod, the push rod is internally provided with an upper spring, one end of the upper spring is fixedly connected with a connecting pin corresponding to the upper and lower reset hole, when the push rod is pressed, the push rod drives the sensing plate to move in the same way, the upper spring is elastically deformed under stress, the sensing plate is separated from the contact area of the circuit board, when the applied force is removed, the push rod is restored to the original position under the action of the elastic force of the upper spring, and meanwhile the sensing plate is restored to the contact state with the circuit board.

[0011] The push rod is provided with a fixing frame matched with the sensing plate, so that the sensing plate is convenient to assemble, disassemble and overhaul.

[0012] The sensing plate is in the shape of a sector, the area of the circuit board corresponding to the moving range of the sensing plate is a circuit contact area, the push rod is pushed leftward or rightward to drive the sensing plate to move in the same way, the contact surface of the sensing plate and the sensing area of the circuit board is in the shape of a sector, and the contact area is uniformly changed.

[0013] The bottom plate is further provided with a reset assembly, so that the push rod can be automatically reset after use.

[0014] The reset assembly comprises a reset plate fixedly connected with the rotating shaft, the end of the reset plate is in the shape of an arc, the end of the reset plate is abutted with a roller, the roller is rotatably connected to a moving base, the moving base is rotatably connected to the bottom plate through a lower rotating shaft, the supporting base is internally provided with a lower spring, one end of the lower spring is abutted with the moving base, when the push rod is moved leftward or rightward, the rotating shaft drives the reset plate to move, the two sides of the arc-shaped opening abut against the roller to drive the moving base to swing, so that the lower spring is compressed, when the applied force is removed, the moving base is restored to the initial position under the action of the elastic force of the lower spring, the roller moves along the arc of the reset plate to drive the reset plate to rotate, and the reset plate is abutted with the most concave part of the arc-shaped opening of the reset plate, so that the push rod is restored to the middle position to realize automatic reset.

[0015] Compared with the prior art, the utility model has the advantages that:

[0016] The push rod can be moved leftward and rightward and upward and downward, the push rod is moved leftward and rightward to drive the sensing plate to change the contact area of the circuit board, the driving current of the dental handpiece is accurately changed, the rotation speed of the dental handpiece is accurately controlled, the push rod is moved upward and downward to drive the sensing plate to change the contact state of the circuit board, the on-off control of the circuit is realized, the start-stop of the dental handpiece is realized, and the force of the control foot is not needed to be controlled when the rotation speed is adjusted, and the stability of the rotation speed is ensured.

[0017] In the scheme, the sensing plate and the sensing area of the circuit board are completely attached, the contact area is in the shape of a sector, the uniform change of the current during the pushing process can be realized, and the accurate and uniform control of the rotation speed of the dental handpiece is realized.

[0018] The parts of the control structure of the dial lever type in the scheme contact in the way of rolling friction, which is beneficial to reduce wear and increase service life of the equipment;

[0019] The scheme does not need other electrical devices, has simple structure, is convenient to install and maintain, has adjustable dial lever driving force, is easy to operate, improves work efficiency, and ensures stable control during operation. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a structure schematic view of an embodiment of the utility model,

[0021] Figure 2 is a sectional view of an embodiment of the utility model,

[0022] Figure 3 is a structure schematic view of an embodiment of the utility model without a shell,

[0023] Figure 4 is a structure schematic view of an embodiment of the utility model without a circuit contact plate,

[0024] Figure 5 is a structure schematic view of an embodiment of the utility model without a dial lever,

[0025] Figure 6 is a structure schematic view of an embodiment of the utility model of a dial lever and a rotating assembly,

[0026] Figure 7 is a sectional view of the utility model, Figure 6

[0027] Figure 8 is a cooperation schematic view of an induction plate and a circuit board in the utility model.

[0028] In the figure: 1, shell; 2, bottom plate; 3, dial lever; 4, circuit board; 5, induction plate; 6, upper spring; 7, connecting pin; 8, upper support; 9, rotating shaft; 10, pin hole; 11, upper and lower reset hole; 12, rotating seat; 13, reset plate; 14, lower rotating shaft; 15, moving seat; 16, roller; 17, lower spring; 18, support seat; 19, circuit contact area; 20, fixed frame. DETAILED DESCRIPTION

[0029] Embodiment 1

[0030] As Figures 1-8 ​The utility model discloses a dental handpiece rotation speed adjustable foot switch, including bottom plate 2, be equipped with support seat 18 and rotating seat 12 on bottom plate 2, be equipped with rotating assembly on rotating seat 12, rotating assembly is hinged with the lever 3 on, the lever 3 top fixedly connected with the induction board 5, support seat 18 and rotating seat 12 are fixedly connected with the circuit board 4 of adaptation with induction board 5 on, be equipped with shell 1 on bottom plate 2, rotating assembly includes the rotating shaft 9 of rotating connection in rotating seat 12, be equipped with upper support 8 on rotating shaft 9, be equipped with upper and lower reset hole 11 and the pin hole 10 of adaptation with the lever 3 on rotating shaft 9, be equipped with upper spring 6 in the lever 3, one end fixedly connected with the connecting pin 7 of corresponding with upper and lower reset hole 11 of upper spring 6, when the lever 3 is stepped down and drives induction board 5 to move in the same way, upper spring 6 is elastically deformed under stress, make induction board 5 and the contact area of circuit board 4 break contact, when cancel the force applied, upper spring 6 due to the elastic force of propelling lever 3 restores original position, and induction board 5 restores the contact state with circuit board 4 simultaneously, the lever 3 be equipped with fixed frame 20 of adaptation with induction board 5 on, the dismounting and overhaul of induction board 5 are convenient, induction board 5 is sector, and the area of corresponding circuit board 4 in induction board 5 moving range is circuit contact area 19, and the lever 3 is driven induction board 5 to move in the same way to the left or right, and the contact surface of induction board 5 and the induction area of circuit board 4 is sector, guaranteeing that the contact area is uniformly changed, bottom plate 2 still be equipped with reset component, when finishing using, can realize the automatic reset of the lever 3, reset component includes the reset plate 13 of fixed connection with rotating shaft 9, and the end of reset plate 13 is concave arc, and the end of reset plate 13 abuts and has the gyro wheel 16, the gyro wheel 16 rotationally connects in mobile seat 15, and mobile seat 15 is rotationally connected in bottom plate 2 through lower rotating shaft 14, support seat 18 is equipped with lower spring 17 in, and one end of lower spring 17 is in abut with mobile seat 15, when moving the lever 3 left and right, rotating shaft 9 will drive reset plate 13 to move, and the both sides of arc-shaped opening will abut gyro wheel 16 and make it drive mobile seat 15 swing, thereby compressing lower spring 17, when cancel the force applied, lower spring 17 due to the action of elastic force propelling mobile seat 15 restores to the initial position, gyro wheel 16 moves along the arc of reset plate 13 and drives reset plate 13 to rotate, and make it with the most concave place of the arc-shaped opening of reset plate 13 abut, thereby drive the lever 3 restores to the middle position and realizes automatic reset.

[0031] Working process or working principle:

[0032] In use, the contact area of the inductive plate 5 on the dial lever 3 with the circuit board 4 changes by moving the dial lever 3 horizontally left and right, the inductive plate 5 is a sector, the area of the circuit board 4 corresponding to the moving range of the inductive plate 5 is the circuit contact area 19, moving the dial lever 3 left or right drives the inductive plate 5 to move in the same way, the contact surface of the inductive plate 5 with the inductive area of the circuit board 4 is a sector, which ensures uniform change of the contact area to control the accurate change of the driving current of the mobile phone, and then realizes the accurate control of the rotation speed of the mobile phone, when temporary shutdown is needed, the dial lever 3 is pressed down to make the contact area of the inductive plate 5 and the circuit board 4 disengage, so that the time is temporarily shut down, when the applied force is removed, the elastic force of the elastic spring 6 pushes the dial lever 3 to restore the original position, and at the same time the inductive plate 5 restores the contact state with the circuit board 4.

[0033] The dial lever 3 of the utility model can realize left and right and up and down dialing, the dial lever 3 moves left and right to drive the inductive plate 5 to change the contact area with the circuit board 4, control the accurate change of the driving current of the dental mobile phone, and then realize the accurate control of the rotation speed of the dental mobile phone, the dial lever 3 moves up and down to drive the inductive plate 5 to change the contact state with the circuit board 4, realize the on-off control of the circuit, and then realize the start and stop of the dental mobile phone.

[0034] In the scheme, the inductive plate 5 and the inductive area of the circuit board 4 are completely attached, the contact area is a sector, the uniform change of the current during dialing can be realized, and the accurate and uniform control of the rotation speed of the dental mobile phone is realized.

[0035] In the scheme, the components of the dial lever 3 type control structure contact in the form of rolling friction, which is beneficial to reduce wear and increase the service life of the equipment.

[0036] The scheme does not need other electrical devices, the structure is simple, the installation and maintenance are convenient, the driving force of the dial lever 3 is adjustable, the operation is light, the work efficiency is improved, and the stable control during operation is ensured.

[0037] In the utility model, the description of the direction and relative position relationship of the structure, such as the description of front, back, left, right, up and down, does not constitute a limitation on the utility model, and is only convenient for description.

Claims

1. A dental handpiece speed adjustable foot switch, characterized by: The utility model provides a kind of electronic cigarette, including bottom plate (2), and bottom plate (2) is equipped with support seat (18) and rotating seat (12), rotating seat (12) is equipped with rotating assembly, rotating assembly is hinged with the lever (3) on, lever (3) top fixedly connected with inductive plate (5), support seat (18) and rotating seat (12) are fixedly connected with the circuit board (4) compatible with inductive plate (5), bottom plate (2) is equipped with shell (1).

2. The dental handpiece speed-adjustable footswitch according to claim 1, wherein: The rotating assembly includes a rotating shaft (9) rotatably connected to the rotating seat (12), the rotating shaft (9) is provided with an upper support (8), the rotating shaft (9) is provided with an upper and lower reset hole (11) and a pin hole (10) hingedly connected with the lever (3), the lever (3) is provided with an upper spring (6), one end of the upper spring (6) is fixedly connected with a connecting pin (7) corresponding to the upper and lower reset hole (11).

3. The dental handpiece speed-adjustable footswitch according to claim 2, wherein: The lever (3) is provided with a fixing frame (20) compatible with the inductive plate (5).

4. The dental handpiece speed-adjustable footswitch according to claim 3, wherein: The inductive plate (5) is a fan shape, and the area of the corresponding circuit board (4) in the moving range of the inductive plate (5) is a circuit contact area (19).

5. The speed adjustable foot control for a dental handpiece according to any one of claims 2-4, wherein: The bottom plate (2) is further provided with a reset assembly.

6. The dental handpiece speed-adjustable footswitch of claim 5, wherein: The reset assembly includes a reset plate (13) fixedly connected with the rotating shaft (9), the end of the reset plate (13) is concave arc-shaped, the end of the reset plate (13) abuts against a roller (16), the roller (16) is rotatably connected to a moving seat (15), the moving seat (15) is rotatably connected to the bottom plate (2) through a lower rotating shaft (14), the support seat (18) is provided with a lower spring (17), one end of the lower spring (17) abuts against the moving seat (15).

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