Sealing element structure

Abstract

The utility model discloses a sealing element structure which comprises a sealing body of an annular structure, at least two inner sealing lips are arranged on the inner wall of the sealing body, a containing annular groove is formed between every two adjacent inner sealing lips, at least two outer sealing lips are arranged on the outer wall of the sealing body, and a buffering annular groove is formed in the end face of one side of the sealing body in the circumferential direction of the sealing body. The sealing structure has the advantage of being good in sealing effect.

Description

Technical Field

[0001] The utility model relates to the field of pool cleaners, in particular to a sealing structure. Background Art

[0002] Since dirt will accumulate at the bottom of the pool after long-term use, the pool needs to be cleaned regularly. At present, many people use a pool cleaner that can move in the pool to clean the pool.

[0003] Some existing pool cleaners use a drive motor to drive the pool cleaner to move, and also use a water pump to pump water so that the water flows through the filter device. Since the pool cleaner works in water, the drive motor and the water pump motor need to be arranged in a closed motor installation chamber, and the output shafts of the drive motor and the water pump motor pass through the motor installation chamber, and the positions where the output shafts of the drive motor and the water pump motor pass through the motor installation chamber are sealed by a seal. However, the sealing reliability of the existing seals is not good, and the sealing effect cannot be guaranteed after long-term use.

[0004] In view of the existence of the above problems, it is necessary to study a sealing structure which has the advantage of good sealing effect. Utility Model Content

[0005] The utility model aims to provide a sealing structure which has the advantage of good sealing effect.

[0006] In order to achieve the above purpose, the solution of the utility model is:

[0007] A sealing structure comprises a sealing body of an annular structure, the inner wall of the sealing body is provided with at least two inner sealing lips, an accommodating annular groove is formed between adjacent inner sealing lips, the outer wall of the sealing body is provided with at least two outer sealing lips, and the end surface of one side of the sealing body is provided with a buffer annular groove along the circumference of the sealing body.

[0008] The inner wall of the sealing body is provided with two inner sealing lips, which are arranged obliquely and are inclined toward two end surfaces of the sealing body respectively.

[0009] The two sealing lips of the sealing body and the accommodating ring groove form a through-axis channel with a diameter gradually decreasing from the middle to both ends.

[0010] The two inner sealing lips of the sealing body have different hardnesses.

[0011] Of the two inner sealing lips of the sealing body, the inner sealing lip close to the buffer ring groove has a harderness than the other inner sealing lip.

[0012] After adopting the above scheme, when the utility model is used, each inner sealing lip of the sealing body contacts the motor output shaft to form at least two inner seals, and each outer sealing lip of the sealing body contacts the inner wall of the motor output channel arranged on the side wall of the motor installation chamber to form at least two outer seals, so that the sealing body can effectively seal with the motor output shaft and the motor output channel to ensure the sealing effect. In addition, the buffer ring groove provides space to reduce the interference of the deformation of the outer sealing lip on the inner sealing lip, thereby helping to ensure the true roundness of the inner sealing lip and the interference caused by the deformation of the outer sealing lip, and ensuring the sealing stability of the inner seal; and the accommodating ring groove can be used to contain lubricating oil so that the motor output shaft can rotate smoothly. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The structure of the utility model is shown in FIG. Figure 1 .

[0014] Figure 2 The structure of the utility model is shown in FIG. Figure 2 .

[0015] Figure 3 It is a cross-sectional view of the utility model.

[0016] Figure 4 It is a schematic diagram of the use of the utility model.

[0017] Description of labels:

[0018] Sealing body 1, shaft passage 10, inner sealing lip 11, accommodating ring groove 110, outer sealing lip 12, buffer ring groove 13,

[0019] Motor output shaft 2,

[0020] The motor installation chamber 3 , the motor output channel 31 , and the blocking edge 311 . DETAILED DESCRIPTION

[0021] In order to further explain the technical solution of the present utility model, the present utility model is described in detail below through specific embodiments.

[0022] like Figures 1 to 4 As shown, the utility model discloses a sealing structure, which includes a sealing body 1 of an annular structure, the inner wall of the sealing body 1 is provided with at least two inner sealing lips 11, and an accommodating annular groove 110 is formed between adjacent inner sealing lips 11, the outer wall of the sealing body 1 is provided with at least two outer sealing lips 12, and the end surface of one side of the sealing body 1 is provided with a buffer annular groove 13 along the circumference of the sealing body 1.

[0023] As shown in the matching figure, when the utility model is used, each inner sealing lip 11 of the sealing body 1 contacts the motor output shaft 2 to form at least two inner seals, and each outer sealing lip 12 of the sealing body 1 contacts the inner wall of the motor output channel 31 provided on the side wall of the motor installation chamber 3 to form at least two outer seals, so that the sealing body 1 can be effectively sealed with the motor output shaft 2 and the motor output channel 31 to ensure the sealing effect. In addition, the buffer ring groove 13 provides space to reduce the interference of the deformation of the outer sealing lip 12 on the inner sealing lip 11, thereby helping to ensure the true roundness of the inner sealing lip 11 and ensure the sealing stability of the inner seal; and the accommodating ring groove 110 can be used to contain lubricating oil so that the motor output shaft 2 can rotate smoothly.

[0024] In the embodiment of the utility model, the inner wall of the sealing body 1 is provided with two inner sealing lips 11, which are arranged obliquely and are inclined toward the two end surfaces of the sealing body 1 respectively, so that sufficient deformation space is formed between the two inner sealing lips 11 and the inner wall of the sealing body 1 so that the inner sealing lips 11 can be easily deformed. Figure 3 As shown, the two sealing lips 11 of the sealing body 1 are inclined so that the two sealing lips 11 of the sealing body 1 and the accommodating ring groove 110 form an through-axis channel 10 with an aperture that decreases from the middle to both ends. The through-axis channel 10 is used to seal the motor output shaft 2. Such an arrangement enables the two inner sealing lips 11 to have a good pressure-bearing effect on the pressure inside and outside the motor mounting chamber 3. At the same time, under the action of the pressure inside and outside the motor mounting chamber 3, the two inner sealing lips 11 can be closer to the motor output shaft 2, thereby ensuring that the two inner sealing lips 11 stably seal the motor output shaft 2.

[0025] In an embodiment of the utility model, the hardness of the two inner sealing lips 11 of the sealing body 1 is different so as to adapt to the different pressures inside and outside the motor installation chamber 3. Specifically, the inner sealing lip 11 close to the buffer ring groove 13 of the two inner sealing lips 11 is used to withstand the water flow pressure outside the motor installation chamber 3, and the inner sealing lip 11 away from the buffer ring groove 13 of the two inner sealing lips 11 is used to withstand the air pressure outside the motor installation chamber 3. The water flow pressure is greater than the air pressure, and the hardness of the inner sealing lip 11 close to the buffer ring groove 13 of the two inner sealing lips 11 of the sealing body 1 is greater than the hardness of the other inner sealing lip 11 to ensure the sealing effect. The end face of the buffer ring groove 13 of the sealing body 1 is used to abut against the retaining edge 311 of the motor output channel 31 to prevent the sealing body 1 from falling out.

[0026] The above embodiments and drawings do not limit the product form and style of the present utility model. Any appropriate changes or modifications made by ordinary technicians in the relevant technical field should be deemed to be within the patent scope of the present utility model.

Claims

1. A sealing structure, characterized in that: The invention comprises a sealing body of an annular structure, wherein the inner wall of the sealing body is provided with at least two inner sealing lips, an accommodating annular groove is formed between adjacent inner sealing lips, the outer wall of the sealing body is provided with at least two outer sealing lips, and the end face on one side of the sealing body is provided with a buffer annular groove along the circumference of the sealing body.

2. A sealing structure according to claim 1, characterized in that: The inner wall of the sealing body is provided with two inner sealing lips, which are arranged obliquely and are inclined toward two end surfaces of the sealing body respectively.

3. A sealing structure according to claim 2, characterized in that: The two sealing lips of the sealing body and the accommodating ring groove form a through-axis channel whose aperture decreases from the middle to the two ends.

4. A sealing structure according to claim 2, characterized in that: The two inner sealing lips of the sealing body have different hardnesses.

5. A sealing structure according to claim 4, characterized in that: Of the two inner sealing lips of the sealing body, the inner sealing lip close to the buffer ring groove has a harderness than the other inner sealing lip.

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