A motor protection device for a floor cleaning machine

Abstract

The utility model relates to the technical field of scrubber, especially for a scrubber motor protection device, including the mainboard, the top of mainboard is provided with protection mechanism, it is used for protecting the motor and circuit of scrubber, the inside installation of mainboard has hexagon stud, the bottom fixed coupling of hexagon stud has countersunk head screw, the top threaded connection of hexagon stud has hexagon nut, through setting up a kind of scrubber motor protection device, utilize the protection mechanism in this device to protect the internal motor of scrubber, solve the dust collection and brush motor of existing scrubber and work through relay control switch, if meet special environment and cause motor resistance to increase, or lead to motor blockage even jam, will lead to circuit current instantaneous increase, burn motor and wire, the problem of serious possible ignition.

Description

Technical Field

[0001] This utility model relates to the field of floor scrubber technology, specifically to a floor scrubber motor protection device. Background Technology

[0002] A floor scrubber is a cleaning machine suitable for cleaning hard floors while simultaneously drying and removing wastewater from the site. It offers advantages such as environmental friendliness, energy efficiency, and high performance. Floor scrubbers are categorized into semi-automatic, fully automatic, walk-behind, and ride-on types.

[0003] However, the existing motor protection devices for floor scrubbers still have shortcomings. Specifically, the vacuum and brush motors of existing floor scrubbers are controlled by relay switches. If the motor resistance increases due to special environments, or if the motor stalls or even jams, the circuit current will increase instantaneously, burning out the motor and wires, and in severe cases, it may cause a fire. Utility Model Content

[0004] The purpose of this invention is to provide a motor protection device for a floor scrubber to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A floor scrubber motor protection device includes a main board with a protection mechanism on the top for protecting the motor and wiring of the floor scrubber. A hexagonal stud is installed inside the main board, with a countersunk screw fixedly connected to the bottom of the hexagonal stud and a hexagonal nut threadedly connected to the top of the hexagonal stud.

[0006] As a preferred embodiment of this utility model, the protection mechanism includes a circuit board slidably connected to the top of the motherboard, a terminal block is installed on the top of the circuit board, a pan head screw is installed inside the terminal block, a washer is slidably connected to the outer wall of the pan head screw and inside the terminal block, and a contactor is installed on the top of the circuit board and on the back of the terminal block.

[0007] As a preferred embodiment of this utility model, the motherboard has a rectangular structure design, and four sets of hexagonal studs, countersunk screws and hexagonal nuts are provided, with the four sets of hexagonal studs penetrating and extending to the outer wall of the motherboard.

[0008] As a preferred embodiment of this utility model, the circuit board is equipped with current and voltage detection elements, and the hexagonal studs penetrate and extend outside the circuit board.

[0009] As a preferred embodiment of this utility model, the contactor is provided in two sets, and the two sets of contactors are symmetrically arranged on both sides of the center of the circuit board.

[0010] As a preferred embodiment of this utility model, multiple sets of pan head screws and washers are provided, and the pan head screws pass through the washers and extend into the terminal block.

[0011] Through the above technical solution, multiple sets of pan head screws can be used to easily connect different devices to the terminal block via cables.

[0012] As a preferred embodiment of this utility model, the contactor, terminal block and circuit board are all connected by electrical connection.

[0013] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model provides a motor protection device for a floor scrubber. The device's protection mechanism safeguards the internal motor of the floor scrubber. The mainboard is installed inside the scrubber. The pan head screw is unscrewed, the washer removed, and the internal motor is connected to the terminal block via wires. The pan head screw is then screwed back into the terminal block. When a motor malfunctions, the current and voltage detection elements on the circuit board detect an increase in current. The circuit board then shuts off the semiconductor switching device and cuts off the power, ensuring the internal motor and wiring are not damaged. When the current and voltage detection elements on the circuit board detect insufficient battery voltage, a voice prompt will alert the user to stop using the scrubber and charge it promptly. If use continues, the circuit board will automatically shut off the semiconductor switching device, cutting off the power and rendering the scrubber unusable. This solves the problem of existing floor scrubbers where the vacuum and brush motors are controlled by relay switches. In such cases, increased motor resistance due to special environments, motor stalling, or even jamming can cause a sudden increase in circuit current, burning out the motor and wiring, and potentially leading to a fire. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional explosion diagram of the protective mechanism of this utility model; Figure 3 This is an exploded view of the three-dimensional structure of the terminal block of this utility model; Figure 4 This is a schematic diagram of the three-dimensional structure of the hexagonal stud of this utility model.

[0015] In the diagram: 1. Main board; 2. Protection mechanism; 3. Hex stud; 4. Countersunk screw; 5. Hex nut; 201. Circuit board; 202. Terminal block; 203. Pan head screw; 204. Washer; 205. Contactor. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0017] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, and several embodiments of the utility model will be provided. However, the utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and complete.

[0018] For examples, please refer to Figure 1-4 This utility model provides a technical solution: A floor scrubber motor protection device includes a main board 1, a protection mechanism 2 on the top of the main board 1 for protecting the motor and wiring of the floor scrubber, a hexagonal stud 3 installed inside the main board 1, a countersunk screw 4 fixedly connected to the bottom of the hexagonal stud 3, and a hexagonal nut 5 threadedly connected to the top of the hexagonal stud 3.

[0019] The main board 1 has a rectangular structure design, with four sets of hexagonal studs 3, countersunk screws 4 and hexagonal nuts 5, and the four sets of hexagonal studs 3 penetrate and extend to the outer wall of the main board 1.

[0020] In this embodiment, reference Figure 2 and Figure 3 The protection mechanism 2 includes a circuit board 201 slidably connected to the top of the main board 1. A terminal block 202 is mounted on the top of the circuit board 201. A pan head screw 203 is installed inside the terminal block 202. A washer 204 is slidably connected to the outer wall of the pan head screw 203 and inside the terminal block 202. A contactor 205 is mounted on the top of the circuit board 201 and on the back of the terminal block 202.

[0021] The circuit board 201 contains current and voltage detection elements, and the hexagonal stud 3 extends through and out of the circuit board 201.

[0022] There are two sets of contactors 205, and the two sets of contactors 205 are symmetrically arranged on both sides of the center of the circuit board 201.

[0023] Multiple sets of pan head screws 203 and washers 204 are provided. Multiple sets of pan head screws 203 can facilitate the connection of the terminal block 202 to different devices through cables. The pan head screws 203 pass through the washers 204 and extend into the terminal block 202.

[0024] The contactor 205, terminal block 202 and circuit board 201 are all connected electrically.

[0025] The working process of this utility model is as follows: When using the floor scrubber motor protection device designed in this solution, the main board 1 is installed inside the floor scrubber, the pan head screw 203 is unscrewed and the washer 204 is removed, the motor inside the floor scrubber is connected to the terminal block 202 through the wire, and then the pan head screw 203 is screwed into the terminal block 202. When a motor of the floor scrubber malfunctions, the current and voltage detection elements installed on the circuit board 201 will detect an increase in current, and the circuit board 201 will turn off the semiconductor switching device and cut off the power supply to ensure that the motor and wiring inside the floor scrubber will not be damaged. When the current and voltage detection elements installed on the circuit board 201 detect that the battery voltage is low, it will prompt the user to stop using the machine and charge it in time through voice prompts. If the machine continues to be used, the circuit board 201 will automatically turn off the semiconductor switching device, thereby cutting off the power supply, and the floor scrubber will not be usable.

[0026] The circuit board 201, terminal block 202, and contactor 205 used in this utility model are all existing known electrical devices, and can all be purchased and used directly on the market. Their structure, circuit, and control principle are all existing known technologies. Therefore, the structure, circuit, and control principle of the circuit board 201, terminal block 202, and contactor 205 will not be described in detail here.

[0027] All standard parts used in this application can be purchased from the market. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art and are also general components, which are common knowledge in this field.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A motor protection device for a floor scrubber, comprising a main board (1), characterized in that: The main board (1) is provided with a protective mechanism (2) on the top, which is used to protect the motor and wiring of the floor scrubber. A hexagonal stud (3) is installed inside the main board (1). A countersunk screw (4) is fixedly connected to the bottom of the hexagonal stud (3). A hexagonal nut (5) is threadedly connected to the top of the hexagonal stud (3).

2. The floor scrubber motor protection device according to claim 1, characterized in that: The protection mechanism (2) includes a circuit board (201) slidably connected to the top of the motherboard (1), a terminal block (202) is installed on the top of the circuit board (201), a pan head screw (203) is installed inside the terminal block (202), a washer (204) is slidably connected to the outer wall of the pan head screw (203) and inside the terminal block (202), and a contactor (205) is installed on the top of the circuit board (201) and on the back of the terminal block (202).

3. The floor scrubber motor protection device according to claim 1, characterized in that: The main board (1) has a rectangular structure design. There are four sets of hexagonal studs (3), countersunk screws (4) and hexagonal nuts (5), and the four sets of hexagonal studs (3) penetrate and extend to the outer wall of the main board (1).

4. A floor scrubber motor protection device according to claim 2, characterized in that: The circuit board (201) is equipped with current and voltage detection elements, and the hexagonal stud (3) extends through and out of the circuit board (201).

5. A floor scrubber motor protection device according to claim 2, characterized in that: The contactor (205) is provided in two sets, and the two sets of contactors (205) are symmetrically arranged on both sides of the center of the circuit board (201).

6. A floor scrubber motor protection device according to claim 2, characterized in that: Multiple sets of pan head screws (203) and washers (204) are provided. The pan head screws (203) pass through the washers (204) and extend into the terminal block (202).

7. A floor scrubber motor protection device according to claim 2, characterized in that: The contactor (205), terminal block (202), and circuit board (201) are all connected electrically.

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