Speed regulation mechanism and cleaning device

Abstract

This invention discloses a speed control mechanism and a cleaning device, comprising: an encoder circuit board for electrical connection to the electrical control unit of the cleaning device; an encoder including an encoder body electrically connected to the encoder circuit board and an encoder rotating part rotatably disposed on the encoder body; and a speed control knob for transmission connection to the encoder rotating part. The encoder rotating part responds to the cyclic operation of the speed control knob in a clockwise or counterclockwise direction by emitting different adjustment signals, which are used to adjust the speed settings of the cleaning device. This invention, through the encoder circuit board and encoder, and the cyclic rotation of the encoder's rotating part, allows the user to directly switch the encoder rotating part from one extreme speed setting to another, making adjustment more convenient and precise. Furthermore, the speed settings can be arbitrarily set as needed, and when a sufficient number of speed settings are available, it can approach stepless speed regulation.

Description

Technical Field

[0001] This invention relates to the field of cleaning equipment technology, and in particular to a speed regulating mechanism and a cleaning device. Background Technology

[0002] With the improvement of people's living standards, cleaning equipment such as vacuum cleaners and sweepers are being used more and more widely in daily life. The working principle of cleaning equipment is to use a motor to drive blades to rotate at high speed, creating negative air pressure within a sealed casing to suck up dust and debris. To meet the cleaning needs of different environments, cleaning equipment needs to have multiple speed adjustment functions, allowing users to adjust the motor speed during use to achieve the best cleaning effect.

[0003] Currently, to achieve the above functions, cleaning equipment is equipped with a speed control mechanism, which includes a potentiometer and a knob for rotating the potentiometer. The potentiometer usually has multiple settings, and by rotating the knob in the direction of increasing the setting, the potentiometer can be switched from a low setting to a high setting. However, the existing speed control mechanism is very inconvenient to adjust. For example, if the potentiometer has one, two, three, and four settings, when adjusting the knob from the fourth setting to the first setting, the knob needs to be rotated in the opposite direction of increasing the setting, passing through several intermediate settings before finally switching to the first setting, which is very cumbersome and inconvenient.

[0004] Therefore, it is necessary to improve the existing technology to overcome the aforementioned defects. Summary of the Invention

[0005] The purpose of this invention is to provide a speed regulating mechanism and a cleaning device that can achieve cyclic adjustment of gears.

[0006] The objective of this invention is achieved through the following technical solution: a speed regulating mechanism, comprising: an encoder circuit board for electrical connection to the electrical control unit of a cleaning device; an encoder, including an encoder body electrically connected to the encoder circuit board and an encoder rotating part rotatably disposed on the encoder body; a speed regulating knob for transmission connection to the encoder rotating part; wherein the encoder rotating part responds to the cyclic operation of the speed regulating knob in a clockwise or counterclockwise direction by emitting different regulating signals, the regulating signals being used to adjust the speed of the cleaning device.

[0007] Furthermore, the encoder rotating part rotates synchronously in response to the rotation of the speed control knob; or a transmission structure is provided between the speed control knob and the encoder rotating part, the transmission structure being adapted to convert the linear motion of the speed control knob into the rotational motion of the encoder rotating part.

[0008] Furthermore, the encoder includes a power switch connected to one end of the encoder rotating part, and the speed regulating mechanism also includes a switch button corresponding to the encoder rotating part. The encoder rotating part responds to the pressing of the switch button to drive the power switch to open or close.

[0009] Furthermore, the speed control mechanism further includes: a mounting base, the speed control knob being rotatably connected to the mounting base; an inner sleeve, fixedly sleeved outside the encoder rotating part and circumferentially contained within the speed control knob; wherein, the inner sleeve drives the encoder rotating part to rotate in response to the rotation of the speed control knob, and the inner sleeve moves relative to the speed control knob along the axial direction of the encoder rotating part in response to the pressing of the switch button.

[0010] Furthermore, the mounting base includes a first side facing the encoder rotating part and a second side facing away from the encoder rotating part. The speed control knob is located on the first side, the switch knob is located on the second side, and the inner sleeve portion passes through the speed control knob and the mounting base to the second side, forming a pressing part that contacts the switch knob.

[0011] Furthermore, at least part of the outer peripheral side of the speed control knob protrudes relative to the mounting base.

[0012] Furthermore, the inner sleeve is contained within the speed control knob in the axial direction of the encoder's rotating part, and the speed control knob is contained within the mounting base in the axial direction of the encoder's rotating part.

[0013] In addition, the present invention also provides a cleaning device, including: the aforementioned speed adjustment mechanism; a body; and a handle connected to the body.

[0014] Furthermore, the handle has a gripping area, which includes a third side corresponding to the thumb of a human hand, and the speed control knob is located on the third side; or the speed control knob is located at the rear of the body.

[0015] Furthermore, the speed control mechanism includes a switch button movably connected to the handle, and the gripping area of ​​the handle includes a fourth side facing the four fingers other than the thumb, with the switch button located on the fourth side.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The present invention uses an encoder circuit board in conjunction with an encoder, and the encoder rotating part of the encoder can rotate cyclically, which makes it convenient for users to directly switch the encoder rotating part from one extreme gear to another extreme gear, making the adjustment more convenient and more accurate. Moreover, the adjustment gear can be set arbitrarily as needed, and when there are enough gears, it can approach stepless speed regulation. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the speed regulating mechanism of the present invention.

[0018] Figure 2 This is an exploded structural diagram of the speed regulating mechanism of the present invention.

[0019] Figure 3 This is a cross-sectional schematic diagram of the speed regulating mechanism of the present invention.

[0020] Figure 4 This is a schematic diagram of the speed control knob in this invention.

[0021] Figure 5 This is a schematic diagram of the cleaning equipment of the present invention.

[0022] In the picture:

[0023] 100, Encoder circuit board; 200, Encoder; 210, Encoder body; 220, Encoder rotating part; 300, Speed ​​control knob; 310, Receiving cavity; 311, First opening; 312, End wall; 313, Second opening; 320, Limiting rib; 330, Connecting part; 400, Switch button; 500, Mounting base; 510, Mounting plate; 511, First side; 512, Second side; 513, Clearance hole; 520, Guide part; 600, Inner sleeve; 610, Limiting groove; 620, Pressing part; 700, Body; 800, Handle; 810, Third side; 820, Fourth side. Detailed Implementation

[0024] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, it should be noted that, for ease of description, only the parts relevant to this application are shown in the accompanying drawings, not the entire structure. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this application.

[0025] The terms “comprising” and “having”, and any variations thereof, used in this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the steps or units listed, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to such process, method, product, or apparatus.

[0026] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0027] Please see Figure 1 As shown, a speed control mechanism corresponding to a preferred embodiment of the present invention is used in a cleaning device. The speed control mechanism includes an encoder circuit board 100, an encoder 200 electrically connected to the encoder circuit board 100, and a speed control knob 300 drivenly connected to the encoder 200. The encoder circuit board 100 is electrically connected to both the encoder 200 and the electrical control unit (not shown) of the cleaning device. By operating the speed control knob 300 to adjust the encoder 200, the encoder circuit board 100 can receive signals from the encoder 200, and the electrical control unit can adjust the motor speed and / or start / stop according to the corresponding adjustment signals.

[0028] Furthermore, referring to Figure 2 and Figure 3 As shown, the encoder 200 includes an encoder body 210 and an encoder rotating part 220 rotatably mounted on the encoder body 210. The encoder body 210 is electrically connected to the encoder circuit board 100, specifically by surface mounting. A speed control knob 300 is connected to the encoder rotating part 220. The encoder rotating part 220 responds to the cyclic operation of the speed control knob 300 in a clockwise or counterclockwise direction by emitting different adjustment signals to adjust the speed of the cleaning equipment.

[0029] In this embodiment, the speed control knob 300 drives the encoder rotating part 220 to rotate synchronously through rotational motion. For example, the speed control knob 300 can be directly fixedly sleeved on the encoder rotating part 220, or a gear structure can be connected between the two. Of course, in other embodiments, the speed control knob 300 can also drive the encoder rotating part 220 to rotate linearly as needed. For example, a transmission structure can be connected between the speed control knob 300 and the encoder rotating part 220, and the transmission structure is suitable for converting the linear motion of the speed control knob 300 into the rotational motion of the encoder rotating part 220. The transmission structure can be a meshing gear and rack, with the rack fixedly connected to the speed control knob 300 and the encoder rotating part 220 fixedly connected to the gear. Furthermore, depending on the rack's installation position, the speed control knob 300 can be selectively driven to move linearly in a direction that is easy to control.

[0030] Furthermore, the encoder circuit board 100 acquires the corresponding gear signal based on the rotation angle of the encoder rotating part 220 and transmits the gear signal to the electrical control unit of the cleaning equipment. The encoder circuit board 100 can drive the encoder rotating part 220 to rotate one revolution as one cycle. For example, in this embodiment, the speed adjustment mechanism includes an AUTO gear, a MAX gear, and multiple gears in between. When the encoder rotating part 220 rotates clockwise or counterclockwise from the AUTO gear to the MAX gear, and then continues to rotate the encoder rotating part 220, the gear will return from the MAX gear to the AUTO gear.

[0031] The present invention uses encoder circuit board 100 in conjunction with encoder 200, and encoder rotating part 220 of encoder 200 can rotate 360° in a cycle, which makes it convenient for users to directly switch encoder rotating part 220 from AUTO to MAX or from MAX to AUTO. The adjustment is more convenient and the accuracy is higher. The adjustment level can be set arbitrarily as needed. When there are enough levels, it can approach stepless speed regulation.

[0032] Furthermore, in this embodiment, the encoder 200 is preferably a switch-type encoder. The encoder 200 includes a power switch (not shown) connected to one end of the encoder rotating part 220. The power switch is adapted to turn the power supply of the encoder circuit board 100 on or off to control the start and stop of the motor. Specifically, the speed control mechanism includes a switch button 400 corresponding to the encoder rotating part 220. The encoder rotating part 220 responds to the pressing of the switch button 400 to drive the power switch to turn on or off. By integrating the switch and speed control into the encoder 200, the cost is reduced, the overall speed control mechanism is more compact, and the installation space is reduced.

[0033] Preferably, to prevent the speed control knob 300 and the switch knob 400 from interfering with each other when the encoder rotating part 220 is rotated or pressed, in this embodiment, the speed control mechanism further includes a mounting base 500 and an inner sleeve 600. The speed control knob 300 is rotatably connected to the mounting base 500, and at least part of the periphery of the speed control knob 300 protrudes relative to the mounting base 500 to facilitate direct contact and rotation of the speed control knob 300. The inner sleeve 600 is fixedly sleeved on the outside of the encoder rotating part 220 and is circumferentially contained within the speed control knob 300. The inner sleeve 600 responds to the rotation of the speed control knob 300 to drive the encoder rotating part 220 to rotate, and responds to the pressing of the switch knob 400 to move relative to the speed control knob 300 along the axial direction of the encoder rotating part 220. By circumferentially limiting the housing of the inner sleeve 600 within the speed control knob 300, when the speed control knob 300 rotates circumferentially, the inner sleeve 600 can rotate synchronously with the speed control knob 300, thereby driving the encoder rotating part 220 to rotate. When the switch button 400 is pressed, the inner sleeve 600 can move relative to the speed control knob 300 along the axial direction of the encoder rotating part 220, so as to prevent the speed control knob 300 from moving synchronously with the inner sleeve 600 along the axial direction of the encoder rotating part 220, thereby ensuring the independence between the switch button 400 and the speed control knob 300, and improving the speed adjustment and power switch experience.

[0034] Furthermore, referring to Figure 4 As shown, the speed control knob 300 is a cylindrical structure with a circular cross-section, and is coaxially arranged with the encoder rotating part 220. Preferably, the outer periphery of the speed control knob 300 is provided with anti-slip texture to ensure that the user can reliably rotate the speed control knob 300. The speed control knob 300 includes a receiving cavity 310, which has a first opening 311 facing the encoder 200. The speed control knob 300 can be sleeved on the outer side of the inner sleeve 600 along the axial direction of the encoder rotating part 220, and when the inner sleeve 600 is placed in the receiving cavity 310, the speed control knob 300 and the inner sleeve 600 cannot rotate relative to each other around the axis of the encoder rotating part 220.

[0035] In this embodiment, the periphery of the receiving cavity 310 is circular, and the outer periphery of the inner sleeve 600 is adapted to the periphery of the receiving cavity 310. To prevent the inner sleeve 600 and the receiving cavity 310 from rotating relative to each other, a limiting structure is provided between the receiving cavity 310 and the inner sleeve 600 to restrict their mutual rotation. The limiting structure includes a limiting rib 320 and a limiting groove 610 that engages with the limiting rib 320. The limiting rib 320 is provided on the periphery of the receiving cavity 310 and extends along the axial direction of the encoder rotating part 220 to both ends of the receiving cavity 310. The limiting groove 610 is recessed inward from the outer periphery of the inner sleeve 600 and extends along the axial direction of the encoder rotating part 220 to both sides of the inner sleeve 600. During installation, the inner sleeve 600 can be inserted into the receiving cavity 310 through the first opening 311 along the axial direction of the encoder rotating part 220, and the limiting rib 320 can be gradually inserted into the limiting groove 610. Multiple limiting ribs 320 can be spaced apart along the periphery of the receiving cavity 310. Correspondingly, multiple limiting grooves 610 are also provided, each corresponding to one of the limiting ribs 320, to improve the reliability of both in the circumferential direction. Preferably, in this embodiment, to simplify the structure, there are two limiting ribs 320, which are arranged opposite to each other. It is understood that the positions of the limiting ribs 320 and the limiting grooves 610 can be interchanged, that is, the limiting ribs 320 can be provided on the inner sleeve 600, while the limiting grooves 610 can be provided in the receiving cavity 310. This will not be elaborated further in this invention.

[0036] Admittedly, in other embodiments, the periphery of the receiving cavity 310 may also be configured as a non-circular structure, such as a triangle or rectangle. The outer periphery of the inner sleeve 600 is adapted to the periphery of the receiving cavity 310. When the inner sleeve 600 is inserted into the receiving cavity 310, the periphery of the receiving cavity 310 can abut against the inner sleeve 600 to achieve relative fixation of the two in the circumferential direction.

[0037] The receiving cavity 310 has an end wall 312 facing the first opening 311. When the speed control knob 300 is fitted over the inner sleeve 600, the end wall 312 can abut against the inner sleeve 600 to limit the position of the speed control knob 300 in the axial direction of the encoder rotating part 220. A second opening 313 is provided on the end wall 312, and a portion of the inner sleeve 600 can extend through the second opening 313 to the outside of the speed control knob 300 to form a pressing part 620 for contacting the switch knob 400.

[0038] Furthermore, return Figure 2 and Figure 3As shown, the mounting base 500 includes a mounting plate 510 disposed perpendicular to the axis of the encoder rotating part 220. The mounting plate 510 has a first side 511 facing the encoder rotating part 220 and a second side 512 facing away from the encoder rotating part 220. A speed control knob 300 is disposed on the first side 511, and a switch knob 400 is disposed on the second side 512. The mounting base 500 also includes a guide portion 520 protruding from the first side 511, the inner wall of which is in contact with the outer peripheral side of the speed control knob 300. There are multiple guide portions 520, which are distributed along the circumference of the speed control knob 300, and the multiple guide portions 520 cooperate to restrict the radial movement of the speed control knob 300. In this embodiment, there are two guide portions 520, which are disposed opposite to each other, and a clearance space is formed between the two guide portions 520 for the outer peripheral side of the speed control knob 300 to protrude. The mounting plate 510 has a clearance hole 513 extending through it along the axial direction of the encoder rotating part 220. The inner sleeve 600 can extend out of the second side 512 through the second opening 313 and the clearance hole 513 in sequence. The pressing part 620 is in contact with the switch button 400. When the switch button 400 is pressed, it can apply pressure to the pressing part 620 along the axial direction of the encoder rotating part 220 to push the encoder rotating part 220 to trigger the power switch.

[0039] Preferably, in order to further improve the reliability of the speed control knob 300 rotating on the mounting base 500, the end of the speed control knob 300 facing the first side 511 is provided with a connecting part 330 along the axial direction of the encoder rotating part 220. The connecting part 330 is adapted to the clearance hole 513. When the speed control knob 300 is installed on the mounting base 500, the speed control knob 300 abuts against the first side 511 to limit its position in the axial direction of the encoder rotating part 220. The connecting part 330 is rotatably inserted in the clearance hole 513 to cooperate with the guide part 520 to guide the rotation of the speed control knob 300.

[0040] In addition, refer to Figure 5 As shown, the present invention also provides a cleaning device, particularly a handheld cleaning device, including a body 700, a handle 800 connected to the body 700, and the aforementioned speed adjustment mechanism.

[0041] In this embodiment, the speed adjustment mechanism is disposed within the handle 800, and the speed adjustment knob 300 extends at least partially from the handle 800 to the outside. The mounting base 500 and the handle 800 can be fixed together by means of snap-fit, screw connection, etc., and the encoder circuit board 100 can be fixed together with the mounting base 500 and / or the handle 800 by means of snap-fit, screw connection, etc., to ensure that the speed adjustment mechanism is securely placed within the handle 800.

[0042] The handle 800 has a gripping area, and the speed control knob 300 is located within the gripping area. Preferably, the gripping area includes a third side 810 corresponding to the thumb of the user, and the speed control knob 300 is located on the third side 810. When the user grips the handle 800, the thumb can rest on the speed control knob 300 or rest on the remaining area of ​​the third side 810, depending on the user's gripping habits. The switch 400 is movably connected to the handle 800 and can move along the axis of the encoder rotating part 220. The gripping area includes a fourth side 820 facing the four fingers other than the thumb, and the switch 400 is located on the fourth side 820.

[0043] Since the human hand mainly provides the force to grip the handle 800 through the palm and the other four fingers, the above structure allows the palm and the other four fingers to fit comfortably and reliably on the outside of the handle 800, avoiding affecting the grip operation. The speed adjustment knob 300 corresponds to the thumb, so that the human hand can adjust the speed adjustment knob 300 without moving the thumb a lot. The adjustment resistance is small, so it can be adjusted continuously and quickly. During the adjustment process, it can ensure that the handle 800 is reliably gripped by the human hand, which is very ergonomic and makes one-handed operation more convenient and reliable.

[0044] Admittedly, in other embodiments, the speed control knob 300 may also be located at the rear of the body 700. Since the rear of the body 700 is usually used to house the motor, by placing the speed control knob 300 at the rear of the body 700 closer to the motor, that is, by placing the speed control mechanism closer to the motor, the connection between the speed control mechanism and the motor is more secure and reliable, and the cost is effectively reduced.

[0045] The working process of the cleaning equipment of the present invention is as follows: When cleaning is required, hold the handle 800 of the cleaning equipment to move the cleaning equipment to the area to be cleaned; press the switch button 400, and the inner sleeve 600 transmits the pressing force of the switch button 400 to the encoder rotating part 220, and drives the power switch to turn on. At this time, the motor starts and the cleaning equipment enters the working state; when it is necessary to adjust the working level of the motor, place your thumb on the speed adjustment button 300 and rotate the speed adjustment button 300. The inner sleeve 600 transmits the rotational force of the speed adjustment button 300 to the encoder rotating part 220, and drives the encoder rotating part 220 to rotate, thereby adjusting the working level.

[0046] The above description is merely an embodiment of this application and does not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A speed regulating mechanism, characterized in that, include: Encoder circuit board (100) for electrical connection with the electrical control unit of the cleaning equipment; The encoder (200) includes an encoder body (210) electrically connected to the encoder circuit board (100) and an encoder rotating part (220) rotatably disposed on the encoder body (210). The speed control knob (300) is connected to the encoder rotating part (220) in a transmission manner; The encoder rotating part (220) responds to the clockwise or counterclockwise cyclic operation of the speed control knob (300) by emitting different adjustment signals, which are used to adjust the gear of the cleaning equipment; the encoder rotating part (220) rotates synchronously in response to the rotation of the speed control knob (300); or a transmission structure is provided between the speed control knob (300) and the encoder rotating part (220), which is adapted to convert the linear motion of the speed control knob (300) into the rotational motion of the encoder rotating part (220); The encoder (200) includes a power switch connected to one end of the encoder rotating part (220), and the speed regulating mechanism includes a switch button (400) corresponding to the encoder rotating part (220). The encoder rotating part (220) drives the power switch to open or close in response to the pressing of the switch button (400). The speed regulating mechanism also includes: Mounting base (500), the speed control knob (300) is rotatably connected to the mounting base (500); The inner sleeve (600) is fixedly sleeved outside the encoder rotating part (220) and circumferentially limited and housed inside the speed control knob (300); The inner sleeve (600) drives the encoder rotating part (220) to rotate in response to the rotation of the speed control knob (300), and the inner sleeve (600) moves relative to the speed control knob (300) along the axial direction of the encoder rotating part (220) in response to the pressing of the switch knob (400).

2. The speed regulating mechanism as described in claim 1, characterized in that, The mounting base (500) includes a first side (511) facing the encoder rotating part (220) and a second side (512) facing away from the encoder rotating part (220). The speed control knob (300) is located on the first side (511), and the switch knob (400) is located on the second side (512). The inner sleeve (600) extends through the speed control knob (300) and the mounting base (500) to the second side (512) and forms a pressing part (620) that contacts the switch knob (400).

3. The speed regulating mechanism as described in claim 1, characterized in that, The speed control knob (300) protrudes at least partially from its outer periphery relative to the mounting base (500).

4. The speed regulating mechanism as described in claim 1, characterized in that, The inner sleeve (600) is contained within the speed control knob (300) in the axial direction of the encoder rotating part (220), and the speed control knob (300) is contained within the mounting base (500) in the axial direction of the encoder rotating part (220).

5. A cleaning device, characterized in that, include: The speed regulating mechanism as described in any one of claims 1 to 4; fuselage (700); as well as The handle (800) is connected to the body (700).

6. The cleaning equipment as described in claim 5, characterized in that, The handle (800) has a gripping area, the gripping area including a third side (810) corresponding to the thumb of a human hand, and the speed control knob (300) is located on the third side (810); or The speed control knob (300) is located at the rear of the body (700).

7. The cleaning equipment as described in claim 6, characterized in that, The speed control mechanism includes a switch (400) movably connected to the handle (800), the grip area of ​​the handle (800) including a fourth side (820) facing the four fingers other than the thumb, and the switch (400) being located on the fourth side (820).

Images