Floor washing machine

Abstract

The utility model relates to a scrubber which comprises a shell, a motor arranged in the shell and an electric control part in communication connection with the motor, the shell is provided with a motor cavity surrounding the periphery of the motor, the motor cavity is provided with a communication port communicated with the electric control part, and the electric control part is provided with an electric control part. The motor is characterized in that a sealing element is arranged in a gap formed between the motor and the motor cavity, and the sealing element can prevent humid airflow from penetrating through the motor cavity from bottom to top to enter the communication port. Compared with the prior art, the motor has the advantages that the sealing element is arranged in the gap formed between the motor and the motor chamber, so that wet airflow can be prevented from penetrating through the motor chamber from bottom to top to enter the communication port, and the protection effect of the motor chamber is further improved.

Description

Technical Field

[0001] The utility model relates to the field of floor scrubbers, in particular to a floor scrubber capable of protecting a motor. Background Art

[0002] A common floor scrubber is used to clean the floor. Its working principle is to generate suction through a fan to suck the clean sewage on the floor into a sewage bucket. The fan drives the impeller through a motor, and the airflow it draws comes from the moist bottom surface to be cleaned. Therefore, the airflow carries more water vapor, which can easily cause the moist airflow to run around in the internal space when the floor scrubber is working. The moisture adheres to the entire machine, posing a very high risk of affecting the performance of other internal electrical components. In addition, the airflow can easily enter the motor, corrode the motor, and affect the service life of the motor. Summary of the invention

[0003] The technical problem to be solved by the utility model is to provide a floor scrubber which can effectively improve the influence of humid airflow on the motor in view of the above-mentioned existing technical status.

[0004] The technical solution adopted by the utility model to solve the above technical problems is: the floor scrubber includes a shell, a motor arranged in the shell and an electronic control part communicatively connected to the motor, the shell is provided with a motor chamber surrounding the periphery of the motor, the motor chamber is provided with a connecting port connected to the electronic control part, and the characteristic is that a sealing member is provided in the gap formed between the motor and the motor chamber, and the sealing member can prevent humid airflow from passing through the motor chamber from bottom to top and entering the connecting port.

[0005] Furthermore, the sealing member includes a cylindrical main body and an annular upper flange and a lower flange extending horizontally inward from the outer circumference of the main body, wherein the upper flange and the lower flange are respectively in contact with the housing of the motor to form a sealed space. The upper and lower flanges of the sealing member can prevent humid airflow from entering the flow port from the motor chamber from bottom to top, thereby improving the protection effect of the electric control part of the motor.

[0006] In order to improve the sealing connection between the sealing member and the communication port, preferably, the main body extends upward from the top of the upper flange portion to form an annular cylinder, and the annular cylinder fits with the inner circumference of the mouth of the communication port.

[0007] Furthermore, the inner circumference of the mouth of the communication port has an embedding portion for embedding the sealing member, and correspondingly, the outer edge of the annular cylinder is provided with at least two convex portions that can be embedded in the embedding portion along the circumferential direction. The engagement between the convex portion and the embedding portion can effectively improve the tightness of the connection between the two.

[0008] Furthermore, the lower edge of the main body is arranged lower than the lower flange portion. This design enables the lower edge of the main body to seal the lower opening of the motor chamber.

[0009] Furthermore, the abutting part of the motor housing includes an upper housing and a lower housing that are matched up and down, the lower housing is provided with a groove extending horizontally outward, the groove includes a first vertical wall and a second vertical wall arranged in a vertically parallel manner, the outer diameter of the upper housing is smaller than that of the lower housing, the periphery of the upper housing is inserted into the groove and fits with the first vertical wall, and a first step abutting with the second vertical wall is formed between the lower flange portion and the lower edge of the main body portion to form a first seal. Since the lower edge of the main body portion seals the lower opening of the motor chamber, and the first seal is formed between the lower flange portion and the lower housing and the upper housing of the motor housing, the seal outside the motor housing has a "double seal" effect.

[0010] In order to enable the upper flange to seal the gap between the upper shell and the flow port, preferably, the cross section of the communication port is in an inverted "L" shape, including a vertical portion for arranging the embedding portion, a second step is formed between the upper flange and the annular cylinder, and the vertical portion abuts against the second step. While the vertical portion of the communication port itself is used to resist the humid airflow, the upper opening of the motor chamber is sealed by means of the second step formed between the upper flange and the annular cylinder of the seal, thereby blocking the humid airflow from "turning" from the lower opening to the upper opening.

[0011] Furthermore, the bottom end of the upper flange is fitted with the part of the upper shell facing the communication port to form a second seal. This can make the seal outside the motor shell have a stronger sealing effect, and the main body of the seal can better block the motor chamber through the first seal and the second seal, effectively preventing humid airflow from passing through the motor chamber from bottom to top and entering the communication port.

[0012] Compared with the prior art, the advantage of the present invention is that since a seal is provided in the gap formed between the motor and the motor chamber, the setting of the seal can prevent humid airflow from passing through the motor chamber from bottom to top and entering the connecting port, thereby further improving the protection effect of the motor chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the structure of the housing in the embodiment of the utility model;

[0014] Figure 2 This is a schematic diagram of the sealing structure in the embodiment of the utility model;

[0015] Figure 3 for Figure 2 A cross-sectional view of

[0016] Figure 4 for Figure 1 A cross-sectional view of

[0017] Figure 5 for Figure 4 The enlarged schematic diagram of point A in the middle;

[0018] Figure 6 It is a structural schematic diagram of a part of the shell in the embodiment of the utility model (forming a communication port). DETAILED DESCRIPTION

[0019] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0020] like Figures 1 to 6 The preferred embodiment of the utility model is shown in FIG. 1 . In this embodiment, the floor scrubber includes a housing 1, a motor 2 disposed in the housing 1, and an electric control part 3 connected to the motor 2. The housing 1 is provided with a motor chamber 4 surrounding the motor 2. The motor chamber 4 is provided with a communication port 5 connected to the electric control part 3. The structure of the communication port 5 can be referred to Figure 6 A seal 6 is provided in the gap formed between the motor 2 and the motor chamber 4 , and the seal 6 can prevent moist airflow from passing through the motor chamber 4 from bottom to top and entering the connecting port 5 , thereby improving the protection effect of the motor chamber 4 .

[0021] Specifically, the sealing member 6 of this embodiment includes a cylindrical main body 61, and an annular upper flange 62 and a lower flange 63 extending horizontally inward from the outer peripheral surface of the main body 61. The upper flange 62 and the lower flange 63 are respectively in contact with the housing 1 of the motor 2 to form a sealed space 64. The upper and lower flanges 63 of the sealing member 6 can prevent humid airflow from the motor chamber 4 from entering the flow port from the bottom to the top, thereby improving the protection effect of the electric control part 3 of the motor 2. In addition, the main body 61 extends upward from the top of the upper flange portion 62 to form an annular cylinder 65, and the annular cylinder is in contact with the inner circumference of the mouth of the connecting port 5, which can also improve the sealing connection between the seal 6 and the connecting port 5, wherein the inner circumference of the mouth of the connecting port 5 has an embedding portion for the seal 6 to be embedded, and correspondingly, the outer edge of the annular cylinder 65 is circumferentially provided with at least two protrusions 651 that can be embedded in the embedding portion, and the fit between the protrusions 651 and the embedding portion can effectively improve the tightness of the connection between the two; and the lower edge 610 of the main body 61 is arranged lower than the lower flange portion 63. This design enables the lower edge 610 of the main body 61 to seal the lower opening 9 of the motor chamber 4.

[0022] In addition, since the housing 1 of the motor 2 will generate different forces on the seal 6 during installation, the main body 61 can also effectively seal the motor chamber 4 when it is deformed. Specifically, first, the main body 61 of the seal 6 is cylindrical, which can better fill the motor chamber 4, and the housing 1 of the motor 2 includes a lower housing 8 and an upper housing 7 that are matched with each other up and down. The gap between the lower housing 8 and the motor chamber 4 constitutes a lower opening 9, and the gap between the upper housing 7 and the motor chamber 4 constitutes an upper opening 10. The humid airflow passes through the lower opening 9 from bottom to top to the upper opening 10 and then "turns" to the connecting port 5. Due to the second seal formed between the upper flange portion 62 of the seal 6 and the annular cylindrical portion 65, and the first seal formed between the lower flange portion 63 and the lower housing 8 and the upper housing 7 of the motor 2 housing 1, the humid airflow is prevented from passing through the motor chamber 4 from bottom to top and entering the connecting port 5.

[0023] refer to Figure 5 The lower shell 8 is provided with a groove 81 extending horizontally outward, and the groove 81 includes a first vertical wall 82 and a second vertical wall 83 arranged vertically parallel and spaced apart. The outer diameter of the upper shell 7 is smaller than that of the lower shell 8. The periphery of the upper shell 7 is inserted into the groove 81 and fits with the first vertical wall 82. A first step 630 abutting against the second vertical wall 83 is formed between the lower flange portion 63 and the lower edge 610 of the main body 61, forming a first seal. The cross section of the communication port 5 is an inverted "L" shape, including a vertical portion 51 for setting the embedded portion, a second step 620 is formed between the upper flange portion 62 and the annular cylinder portion 65, and the vertical portion 51 abuts against the second step 620. Since the lower edge 610 of the main body 61 seals the lower opening 9 of the motor chamber 4, and the first seal is formed between the lower flange portion 63 and the lower shell 8 and the upper shell 7 of the motor 2 housing 1, the seal outside the motor 2 housing 1 has a "double seal" effect. Similarly, while the vertical portion 51 of the communication port 5 is used to resist the moist airflow, the second step 620 formed between the upper flange portion 62 and the annular cylindrical portion 65 of the seal 6 is also used, so that the bottom end of the upper flange portion 62 fits with the part of the shell 1 of the upper shell 7 facing the communication port 5, forming a second seal, sealing the upper opening 10 of the motor chamber 4, and blocking the moist airflow from "turning" from the lower opening 9 to the upper opening 10. In this way, the seal outside the housing 1 of the motor 2 has a stronger sealing effect, and the main body 61 of the seal 6 can better block the motor chamber 4 through the first and second seals, effectively preventing the moist airflow from passing through the motor chamber 4 from bottom to top and entering the communication port 5.

Claims

1. A floor scrubber, comprising a housing (1), a motor (2) arranged in the housing (1), and an electric control part (3) communicatively connected to the motor (2), the housing (1) being provided with a motor chamber (4) surrounding the motor (2), the motor chamber (4) being provided with a communication port (5) communicating with the electric control part (3), characterized in that: A sealing member (6) is provided in the gap formed between the motor (2) and the motor chamber (4), and the sealing member (6) can prevent moist airflow from passing through the motor chamber (4) from bottom to top and entering the communication port (5).

2. The floor scrubber according to claim 1, characterized in that: The sealing member (6) comprises a cylindrical main body (61) and an annular upper flange (62) and a lower flange (63) extending horizontally inward from the outer peripheral surface of the main body (61); the upper flange (62) and the lower flange (63) are respectively in contact with the housing (1) of the motor (2) to form a sealed space (64).

3. The floor scrubber according to claim 2, characterized in that: The main body (61) extends upward from the top of the upper flange (62) to form an annular cylindrical portion (65), and the annular cylindrical portion (65) fits with the inner circumference of the mouth of the communication port (5).

4. The floor scrubber according to claim 3, characterized in that: The inner circumference of the mouth of the communication port (5) has an embedding portion for embedding the sealing member (6), and correspondingly, the outer edge of the annular cylindrical portion (65) is provided with at least two convex portions (651) along the circumferential direction that can be embedded in the embedding portion.

5. The floor scrubber according to claim 4, characterized in that: The lower edge (610) of the main body portion (61) is arranged lower than the lower flange portion (63).

6. The floor scrubber according to claim 5, characterized in that: The abutting part of the housing (1) of the motor (2) includes an upper housing (7) and a lower housing (8) that are matched with each other up and down. The lower housing (8) is provided with a groove (81) extending horizontally outward. The groove (81) includes a first vertical wall (82) and a second vertical wall (83) arranged in parallel and spaced apart in a vertical direction. The outer diameter of the upper housing (7) is smaller than that of the lower housing (8). The periphery of the upper housing (7) is inserted into the groove (81) and fits with the first vertical wall (82). A first step (630) abutting against the second vertical wall (83) is formed between the lower flange portion (63) and the lower edge (610) of the main body portion (61), thereby forming a first seal.

7. The floor scrubber according to claim 6, characterized in that: The cross section of the communication port (5) is in an inverted "L" shape, and includes a vertical portion (51) for arranging the embedded portion, a second step (620) is formed between the upper flange portion (62) and the annular cylindrical portion (65), and the vertical portion (51) abuts against the second step (620).

8. The floor scrubber according to claim 7, characterized in that: The bottom end of the upper flange portion (62) fits into the portion of the upper shell (7) facing the communication port (5) to form a second seal.

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