Shell sealing structure and motor thereof

Abstract

The utility model discloses a shell sealing structure and a motor thereof, which belong to the technical field of motors, and comprise a ring body and a rubber sleeve, the ring body is used as a supporting component and is embedded into a shaft hole of a motor shell, and a gap is arranged between the ring body and the shaft hole to reduce friction force. The rubber sleeve and the ring body are coaxially fixed, and at least one first sealing ring is arranged on the outer side of the rubber sleeve and tightly attached to the hole wall of the shaft hole. The rubber sleeve is integrally designed to be in a horn shape expanding outwards, water drops attached to the surface of the sealing structure are thrown out under the action of centripetal force when the motor runs, retention of the water drops is prevented, and the sealing effect is further enhanced. In addition, a circular ring is installed in the ring body to enhance the structural strength, and deformation or damage of the ring body caused by external force is prevented. According to the shell sealing structure, the sealing performance is enhanced, the friction force is reduced, the structural strength is improved, the adaptability is enhanced, a multi-layer sealing structure is constructed, and a powerful guarantee is provided for stable operation of the motor.

Description

TECHNICAL FIELD

[0001] The utility model relates to motor technical field, concretely relates to a shell sealing structure and motor thereof. BACKGROUND

[0002] In the motor application field, it is crucial to ensure that the inside of the motor is not invaded by liquid or impurities in the external environment. The traditional motor shell sealing structure mostly adopts simple rubber gasket or O-ring for sealing. However, these traditional sealing methods often have poor sealing effect, are easy to wear, and other problems when facing complex and changeable working conditions, thereby leading to frequent failures such as water entering the inside of the motor and oil leakage, which seriously affects the operation reliability and service life of the motor. SUMMARY

[0003] In view of the above technical deficiencies, the utility model aims to provide a shell sealing structure and motor thereof, which can realize multi-layer protection and better sealing effect.

[0004] To solve the above technical problems, the utility model adopts the following technical scheme: the utility model provides a shell sealing structure, the shell includes a shaft hole matched with the output shaft of the motor, and comprises:

[0005] A ring body capable of being embedded in the inside of the shaft hole;

[0006] A rubber sleeve coaxially fixed with the ring body, the outer side of the rubber sleeve is provided with at least one first sealing ring, and the first sealing ring abuts against the inner wall of the shaft hole;

[0007] Wherein, the inside of the rubber sleeve is provided with a support body, the rubber sleeve is a conical ring body, and the side of the rubber sleeve close to the outside of the shaft hole is in a state of outward opening.

[0008] Preferably, the rubber sleeve and the first sealing ring are integrally formed, the inside of the rubber sleeve is provided with a ring frame, the ring frame is in a circular ring shape, the outer side of the ring frame is connected with an arc plate, one end of the arc plate away from the ring frame is connected with an elastic sheet, the outer arc surface of the arc plate faces the inside of the cavity of the shell, and the elastic sheet is arranged in the first sealing ring.

[0009] Preferably, the number of the first sealing rings is multiple, and gaps are left between the multiple first sealing rings.

[0010] Preferably, a gap is arranged between the ring body and the shaft hole, and the periphery of the ring body is provided with a second sealing ring, and the second sealing ring seals the gap.

[0011] Preferably, the inner side of the ring body is provided with a recess, a plurality of circumferentially arranged pressing claws are mounted in the inside of the recess, and the pressing claws can press on the output shaft.

[0012] Preferably, a circular ring is installed inside the ring body, and the circular ring is sleeved inside the ring body.

[0013] Preferably, a sleeve plate is arranged outside the ring body inside the accommodation groove, and the sleeve plate is a circular metal piece.

[0014] Preferably, a gap is arranged between any two adjacent elastic sheets.

[0015] A motor comprises the sealing structure, and further comprises a motor housing and an output shaft of the motor, and the sealing structure is sleeved on the output shaft.

[0016] The motor has the advantages that:

[0017] The rubber sleeve is coaxially fixed with the ring body, the first sealing ring is arranged on the outer side of the rubber sleeve, and the risk of liquid entering the inside of the motor housing is effectively reduced. Meanwhile, the overall design of the rubber sleeve is in a horn shape that expands outward, water droplets attached to the surface of the sealing structure are thrown outward by the action of centripetal force, and the water droplets are prevented from being retained.

[0018] A gap is arranged between the ring body and the shaft hole, and a second sealing ring is arranged to seal the gap. This design reduces the contact area between the second sealing ring and the shaft hole, thereby reducing the friction force and being beneficial to the stable operation of the motor. The circular ring is installed inside the ring body, and the structural strength of the ring body is enhanced to prevent the ring body from being deformed or damaged due to external force.

[0019] The rubber sleeve is internally provided with a ring frame, an arc plate and elastic sheets, the elastic sheets have the function of expanding outward, and the first sealing ring is caused to be tightly attached to the hole wall of the shaft hole. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a sectional view of the connection of the sealing structure, the output shaft and the shaft hole.

[0021] Figure 2 It is an enlarged view of A of Figure 1

[0022] Figure 3 It is an enlarged view of B of Figure 1

[0023] Figure 4 It is an angle schematic view of the sealing structure.

[0024] Figure 5 It is another angle schematic view of the sealing structure.

[0025] Figure 6 It is a connection view of the ring frame and the elastic sheets.

[0026] ​​In the figure: 1, output shaft, 2, housing, 201, shaft hole, 3, rubber sleeve, 4, first sealing ring, 5, ring body, 6, circular ring, 7, sleeve plate, 8, pressing claw, 9, ring frame, 10, arc plate, 11, elastic sheet, 12, second sealing ring. DETAILED DESCRIPTION

[0027] The utility model is described below with specific examples, but is not limited to the utility model.

[0028] Example one

[0029] As shown in the figure, in this embodiment, a sealing structure of a housing 2 is provided, the housing 2 comprises a shaft hole 201 adapted to the motor output shaft 1, and a ring body 5 and a rubber sleeve 3. Figures 1-6 The ring body 5 can be embedded in the inside of the shaft hole 201, and the ring body 5 is a support component of the sealing structure.

[0030] The rubber sleeve 3 is coaxially fixed with the ring body 5, and the rubber sleeve 3 is provided with at least one first sealing ring 4 on the outside, the first sealing ring 4 abuts against the inner wall of the shaft hole 201, and the first sealing ring 4 can play a sealing effect, thereby reducing the risk of liquid entering the inside of the motor housing 2.

[0031] The inside of the rubber sleeve 3 is provided with a support body, the rubber sleeve 3 is a conical ring body 5, the side of the rubber sleeve 3 close to the outside of the shaft hole 201 is outwardly flared, and the overall design of the rubber sleeve 3 is in the shape of a horn that expands outward. This feature makes the water droplets attached to the surface of the sealing structure effectively thrown outward when the sealing structure rotates with the motor output shaft 1, thereby preventing the water droplets from remaining on the sealing structure.

[0032] A gap is provided between the ring body 5 and the shaft hole 201, and the periphery of the ring body 5 is provided with a second sealing ring 12, the second sealing ring 12 seals the gap, the gap can reduce the contact area between the second sealing ring 12 and the shaft hole 201, and under the premise of reducing the contact area, the friction between the second sealing ring 12 and the shaft hole 201 can be reduced, and the second sealing ring 12 provided at the gap can seal the gap.

[0033] The inside of the ring body 5 is provided with a circular ring 6, the circular ring 6 is sleeved in the inside of the ring body 5, and the structural strength of the ring body 5 is enhanced.

[0034] The inside of the ring body 5 is provided with a sleeve plate 7 outside the accommodation groove, the sleeve plate 7 is a circular metal piece, and provides additional support or protection to prevent the ring body 5 from being deformed or damaged due to external force.

[0035] Example two

[0036] As shown in the figure, in this embodiment, a sealing structure of a housing 2 is provided, the housing 2 comprises a shaft hole 201 adapted to the motor output shaft 1, and a ring body 5 and a rubber sleeve 3.

[0037] Figures 1-6 ​As shown, on the basis of embodiment one, this embodiment provides the structure of the rubber sleeve 3, as follows:

[0038] The rubber sleeve 3 and the first sealing ring 4 are integrally formed, the inside of the rubber sleeve 3 is provided with a ring frame 9, the ring frame 9 is in the shape of a circular ring 6, the outer side of the ring frame 9 is connected with an arc plate 10, the end of the arc plate 10 away from the ring frame 9 is connected with a spring piece 11, the outer arc surface of the arc plate 10 faces the inside of the cavity of the shell 2, and the spring piece 11 is arranged inside the first sealing ring 4. Due to the action of the arc plate 10, the spring piece 11 has the function of expanding outward, and this expansion force enables the first sealing ring 4 to tightly fit on the hole wall of the shaft hole 201.

[0039] The number of the first sealing ring 4 is multiple, and gaps are left between the multiple first sealing rings 4, which can construct a multi-layer sealing structure, and an isolation chamber can be configured between each first sealing ring 4, which effectively reduces the possibility of water droplets penetrating into the inside of the motor shell 2.

[0040] The inside of the ring body 5 is provided with a let-go slot, and a plurality of circumferentially arranged pressing claws 8 are installed inside the let-go slot, which can press on the output shaft 1. The main function of these pressing claws 8 is to press on the output shaft 1 of the motor, thereby providing additional fixing and sealing effects. Such a design helps to ensure the tight connection between the sealing structure and the output shaft 1.

[0041] Gaps are provided between any two adjacent spring pieces 11, which can have a certain deformation space when subjected to external force, thereby improving the adaptability of the sealing structure.

[0042] Embodiment three

[0043] As Figures 1-6 shown, on the basis of embodiment one and embodiment two, this embodiment provides a motor, as follows:

[0044] A motor, the motor includes the above-mentioned shell 2 sealing structure, and further includes a motor housing and an output shaft 1 of the motor, and the sealing structure is sleeved on the output shaft 1.

[0045] Working principle:

[0046] When the motor is running, the sealing structure is sleeved on the output shaft 1, and the first sealing ring 4 of the rubber sleeve 3 tightly fits on the hole wall of the shaft hole 201, forming a first sealing barrier. At the same time, the overall design of the rubber sleeve 3 is in the shape of an outwardly expanding horn, which uses the action of centripetal force to throw the water droplets attached to the surface of the sealing structure outward, preventing the retention of water droplets.

[0047] The gap between the ring body 5 and the shaft hole 201 and the second sealing ring 12 arranged at the gap jointly constitute a second sealing barrier. This design reduces the contact area between the second sealing ring 12 and the shaft hole 201, thereby reducing the friction and facilitating the smooth operation of the motor.

[0048] The circular ring 6 installed inside the ring body 5 enhances the structural strength of the ring body 5 and prevents the ring body 5 from being deformed or damaged due to external force.

[0049] The ring frame 9, the arc plate 10 and the elastic sheet 11 inside the rubber sleeve 3 jointly act on the elastic sheet 11 to make the elastic sheet 11 have the function of expanding outward. This expansion force promotes the first sealing ring 4 to tightly adhere to the hole wall of the shaft hole 201, and even in the case of vibration or inclination of the motor, the motor can still maintain good sealing effect.

[0050] The gaps between the plurality of first sealing rings 4 can be configured as isolation chambers to form a multi-layer sealing structure. This design further reduces the possibility of water droplets penetrating into the motor shell 2, thereby improving the sealing performance of the motor.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate but not to limit the technical solutions of the present application. Although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that the present application can still be modified or replaced equivalently without departing from the spirit and scope of the present application. Any modification or partial replacement thereof should be covered in the scope of the claims of the present application.

Claims

1. A housing sealing structure, the housing (2) including a shaft hole (201) adapted to the output shaft (1) of a motor, characterized in that, include: Ring body (5), which can be embedded inside the shaft hole (201); A rubber sleeve (3) is coaxially fixed with the ring body (5). At least one first sealing ring (4) is provided on the outer side of the rubber sleeve (3), and the first sealing ring (4) abuts against the inner wall of the shaft hole (201). The rubber sleeve (3) has a support inside. The rubber sleeve (3) is a conical ring (5). The side of the rubber sleeve (3) near the outside of the shaft hole (201) is open outward.

2. The outer shell sealing structure according to claim 1, characterized in that, The rubber sleeve (3) and the first sealing ring (4) are integrally formed. The rubber sleeve (3) has a ring frame (9) inside. The ring frame (9) is in the shape of a circular ring (6). An arc plate (10) is connected to the outside of the ring frame (9). A spring piece (11) is connected to the end of the arc plate (10) away from the ring frame (9). The outer arc surface of the arc plate (10) faces the cavity of the outer shell (2). The spring piece (11) is located inside the first sealing ring (4).

3. The outer shell sealing structure according to claim 2, characterized in that, There are multiple first sealing rings (4), and gaps are left between the multiple first sealing rings (4).

4. The outer shell sealing structure according to claim 1, characterized in that, A gap is provided between the ring body (5) and the shaft hole (201), and a second sealing ring (12) is provided on the periphery of the ring body (5) to seal the gap.

5. The outer shell sealing structure according to claim 1, characterized in that, The inner side of the ring (5) is provided with a relief groove, and a plurality of circumferentially arranged pressing claws (8) are installed inside the relief groove. The pressing claws can press against the output shaft (1).

6. The outer shell sealing structure according to claim 1, characterized in that, A circular ring (6) is installed inside the ring body (5), and the circular ring (6) is fitted inside the ring body (5).

7. The outer shell sealing structure according to claim 5, characterized in that, The inner part of the ring (5) is provided with a sleeve (7) located outside the relief groove. The sleeve (7) is a circular metal part.

8. The outer shell sealing structure according to claim 2, characterized in that, A gap is provided between any two adjacent spring pieces (11).

9. An electric motor, characterized in that, The motor includes the housing (2) sealing structure as described in any one of claims 1-8, and also includes a motor housing and an output shaft (1) of the motor, wherein the sealing structure is sleeved on the output shaft (1).

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