Sealing ring structure and waterproof motor

Abstract

The utility model belongs to the technical field of waterproof motors, and particularly relates to a sealing ring structure and a waterproof motor. The sealing ring is arranged on the small waterproof motor, the three-stage waterproof structure of the abutting part is in sealed connection with the rotating shaft of the motor, so that the motor can be axially waterproof, the sealing ring body is clamped in the waterproof groove of the motor and is matched with the deformation part to be in interference fit with the waterproof groove, and the waterproof grade of the motor further reaches I PX4; the matching design of the sealing ring and the motor replaces the traditional framework oil seal, so that the waterproof structure of the small motor is more compact, lighter and more cost-saving under the I PX4 waterproof grade.

Description

Technical Field

[0001] The utility model belongs to the technical field of waterproof motors, and in particular relates to a sealing ring structure and a waterproof motor. Background Art

[0002] When small motors are used underwater, they are set with different waterproof levels according to different requirements to adapt to different waterproof operations. Among them, IPX4 means that the motor has a splashproof waterproof level. Specifically, it means that the motor can work normally and will not be harmfully affected when it is splashed with water from any direction.

[0003] In the existing technology, small waterproof motors cannot use the usual oil seal waterproofing method to ensure the IPX4 waterproof standard. The reason is that the oil seal waterproofing structure is too large and is not suitable for placement inside the small waterproof motor. In addition, the oil seal waterproofing will result in excessive waterproofing effect, which will not meet the standard and increase production costs. However, not waterproofing will result in insufficient waterproofing effect, resulting in the problem that the waterproof motor cannot be used normally. Utility Model Content

[0004] In order to ensure that the small motor is within the waterproof level IPX4 without consuming too much cost, the utility model proposes a sealing ring, which is provided with three-level waterproof, and by providing grooves and protrusions to cooperate with the three-level waterproof to press the rotating shaft to achieve small IPX4 level without using oil seal waterproof and can prevent water from flowing into the motor from the rotating shaft axially, thereby causing damage to the motor.

[0005] The purpose of the utility model is achieved by the following methods:

[0006] In a first aspect, a sealing ring structure includes a sealing ring body, wherein the sealing ring body has a connecting hole; the sealing ring body also includes:

[0007] A clamping portion, arranged at the outer end of the sealing ring body, for clamping in the waterproof groove of the motor;

[0008] The deformation part is arranged inside the sealing ring body;

[0009] The abutment portion is arranged on the deformation portion and encloses a connection hole; the abutment portion is provided with a three-level waterproof structure, and is sealed and connected to the motor shaft passing through the connection hole through the three-level waterproof structure.

[0010] Wherein, the deformation part is provided with a deformation groove and a protrusion.

[0011] The sealing ring is provided with an abutment part, and the three-level waterproof structure provided on the abutment part abuts against the motor during installation, which can effectively prevent the motor from leaking in the axial direction, and can also meet the IPX4 waterproof requirements of small motors. At the same time, a clamping part is provided to clamp on the waterproof groove of the motor to prevent the sealing ring from falling off when clamped on the motor shaft, and the deformation part can also provide pressure against the motor shaft through deformation.

[0012] In some embodiments, the three-level waterproof structure includes a primary waterproof structure, a secondary oil seal waterproof, and a tertiary waterproof structure.

[0013] The three-level waterproof structure is abutted against the motor shaft, and a first-level waterproof structure, a second-level oil seal structure, and a third-level waterproof structure are arranged from top to bottom, so that the motor meets the IPX4 waterproof level requirement.

[0014] In some embodiments, the primary waterproof structure is provided with a first abutting portion, and a first inclined surface and a first curved surface are provided on both sides of the first abutting portion, and the first abutting portion is pointed.

[0015] The primary waterproof structure abuts against the rotating shaft through the first abutment portion. The first abutment portion is sharp to reduce the contact area with the motor shaft and further prevent the sealing ring from being damaged by friction. At the same time, the first inclined surface can guide the external water flow to slide down instead of adhering to the sealing ring.

[0016] In some embodiments, the third-level waterproof structure is provided with a second abutting portion, and second inclined surfaces and a first plane are provided on both sides of the second abutting portion; the second abutting portion is arc-shaped.

[0017] The third-level waterproof structure abuts against the rotating shaft through the second abutting portion, and the second abutting portion is arc-shaped, which can prevent the entire sealing ring from slipping.

[0018] In some embodiments, the secondary oil seal waterproof is arranged between the first abutting portion and the second abutting portion, and the secondary oil seal waterproof includes a first side surface, and the secondary oil seal waterproof is composed of the first side surface, the second inclined surface, and the first curved surface.

[0019] The secondary oil seal waterproof is arranged between the first abutting part and the second abutting part, and is enclosed by the primary waterproof structure and the secondary oil seal waterproof. The use of oil seal can improve the waterproof performance and further promote the motor waterproof to IPX4 level.

[0020] In some embodiments, the sealing ring body is provided with a first platform and a second platform, and the deformation groove is provided between the first platform and the second platform.

[0021] The deformation groove is arranged between the first platform and the second platform to provide a deformation space for the interference fit generated when the motor shaft and the sealing ring are combined.

[0022] In some embodiments, the protrusion is disposed on the other side of the bottom end of the deformation groove and extends in a direction away from the abutment portion.

[0023] Since the protrusion is arranged to extend in a direction away from the abutment portion, the protrusion is pressed toward the abutment portion after the sealing ring and the motor are installed to produce an interference fit.

[0024] In some embodiments, a third inclined surface and a fourth inclined surface are provided on both sides of the bottom end of the clamping portion, and the third abutting portion is pointed.

[0025] The third clamping portion is sharp, which can prevent the sealing ring from falling off the motor when it is installed on the rotating shaft, thereby causing wear of the motor and the sealing ring.

[0026] In some embodiments, the diameter of the connecting hole is smaller than the diameter of the motor shaft, and the outer diameter of the sealing ring body is smaller than the inner diameter of the motor waterproof groove.

[0027] The hole diameter of the connection hole is smaller than the diameter of the motor shaft and the outer diameter of the sealing ring body is smaller than the inner diameter of the motor waterproof groove, so that during installation, the sealing ring body and the motor waterproof groove are interference fit.

[0028] In a second aspect, a waterproof motor comprises the sealing ring structure of any one of the above items.

[0029] The sealing ring is provided on the small motor, so that the small motor can reach the IPX4 waterproof level.

[0030] The utility model provides a sealing ring structure and a waterproof motor with beneficial effects:

[0031] A sealing ring is arranged on the small waterproof motor, and is sealed and connected to the rotating shaft of the motor through the three-level waterproof structure of the abutment part, so that the motor can be axially waterproof, and the sealing ring body is clamped in the waterproof groove of the motor and the deformation part is interference fit with the waterproof groove, so that the waterproof level of the motor further reaches IPX4. The matching design of the sealing ring and the motor replaces the traditional skeleton oil seal, and realizes that the small waterproof motor ensures the IPX4 waterproof level, and the waterproof structure is more compact, lighter and more cost-effective. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a three-dimensional diagram of the sealing ring of the utility model;

[0033] Figure 2 It is a side sectional view of the sealing ring of the utility model;

[0034] Figure 3 for Figure 2 A magnified view of part a;

[0035] Figure 4 for Figure 2A magnified view of part b;

[0036] Figure 5 This is a schematic diagram of the connection between the sealing ring and the motor.

[0037] Reference numerals:

[0038] 100, clamping portion; 110, third inclined surface; 120, fourth inclined surface; 130, third abutting portion;

[0039] 200, deformation portion; 210, deformation groove; 220, protrusion;

[0040] 300, abutment; 310, primary waterproof structure; 311, first abutment; 312, first inclined surface; 313, first arc surface; 320, secondary oil seal waterproof; 321, first side surface; 330, tertiary waterproof structure; 331, second abutment; 332, second inclined surface; 333, first plane; 340, first platform; 350, second platform;

[0041] 400, connection hole;

[0042] 500, motor; 510, rotating shaft; 520, waterproof groove. DETAILED DESCRIPTION

[0043] It should be noted that, in the absence of conflict, the embodiments of the present invention and the technical features in the embodiments can be combined with each other, and the detailed description in the specific implementation method should be understood as an explanation of the purpose of the present invention and should not be regarded as an improper limitation on the present invention.

[0044] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the specific technical solution of the utility model will be further described in detail below in conjunction with the drawings in the embodiment of the utility model. The following embodiments are used to illustrate the utility model, but are not used to limit the scope of the utility model.

[0045] In the embodiments of the present invention, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present invention, unless otherwise specified, the meaning of "multiple" is two or more.

[0046] In addition, in the embodiments of the present invention, directional terms such as "up", "down", "left" and "right" are defined relative to the orientation of the components in the drawings. It should be understood that these directional terms are relative concepts. They are used for relative description and clarification, and they may change accordingly according to the changes in the orientation of the components in the drawings.

[0047] In the embodiments of the present invention, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium.

[0048] In the embodiments of the present invention, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element.

[0049] In the embodiments of the present invention, words such as "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present invention should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present the related in a specific way.

[0050] Embodiment 1:

[0051] like Figure 1 As shown, the embodiment provides a sealing ring structure, including a sealing ring body 530, the sealing ring body 530 has a connecting hole 400; the sealing ring body 530 also includes:

[0052] The clamping part 100 is arranged at the outer end of the sealing ring body 530 and is used for clamping in the motor waterproof groove 520;

[0053] The deformation part 200 is arranged inside the sealing ring body 530;

[0054] The abutting portion 300 is disposed on the deformation portion 200 and encloses a connecting hole 400 ; the abutting portion 300 is provided with a three-level waterproof structure 330 , and is sealed and connected to the motor shaft 510 passing through the connecting hole 400 through the three-level waterproof structure 330 .

[0055] The deformation portion is provided with a deformation groove 210 and a protrusion 220 .

[0056] Specifically, the sealing ring body 530 is provided with a connecting hole 400, and the connecting hole 400 is used to be sleeved on the motor 500. The abutment portion 300, the deformation portion 200, and the clamping portion 100 are arranged from the inside to the outside, and the abutment portion 300 is arranged on the inner wall of the connecting hole 400, so that when the motor 500 is installed, the abutment portion 300 always abuts against the peripheral side of the rotating shaft 510 until the installation is completed.

[0057] The deformation part 200 is arranged between the clamping part 100 and the abutting part 300. The deformation part 200 includes a groove, a groove plus a protrusion, a small elastic structure, etc. Since the sealing ring body 530 is soft and can be deformed, it can be elastically deformed with interference fit during installation, so that the sealing ring body 530 is installed in the waterproof groove 520, and there is a squeezing force on both sides, so that the sealing ring body 530 is less likely to fall off in the waterproof groove 520. At the same time, it also makes the abutting force of the abutting part 300 greater and less likely to fall off from the rotating shaft 510.

[0058] The clamping part 100 is arranged at the outer end of the entire sealing ring, and the side wall is connected to the waterproof groove 520. During installation, it is clamped in the waterproof groove 520 through interference fit to prevent the entire sealing ring body 530 from sliding off.

[0059] Furthermore, in order to improve the waterproof effect, the material of the sealing ring is selected to be nitrile rubber material with good waterproofness.

[0060] The sealing ring is provided with an abutting portion 300, and the three-level waterproof structure 330 provided on the abutting portion 300 abuts against the motor 500 during installation, which can effectively prevent the axial leakage of the motor 500 and meet the IPX4 waterproof requirements of the small motor 500. At the same time, a clamping portion 100 is provided to clamp on the waterproof groove 520 of the motor 500 to prevent the sealing ring from falling off when clamped on the motor shaft 510, and the deformation portion 200 can also provide pressure against the motor shaft 510 through deformation.

[0061] Embodiment 2:

[0062] like Figure 2 to Figure 4 As shown, this embodiment further illustrates and optimizes various parts of a sealing ring structure in Embodiment 1.

[0063] In some preferred embodiments, the three-level waterproof structure 330 includes a primary waterproof structure 310 , a secondary oil seal waterproof 320 , and a tertiary waterproof structure 330 .

[0064] Specifically, a cavity is provided between the primary waterproof structure 310 and the tertiary waterproof structure 330, and the cavity is used for oil sealing and waterproofing. This method is equivalent to a simplified oil sealing device, avoiding the installation of conventional springs, and making the structure smaller and lighter.

[0065] In some optional embodiments, multiple levels of waterproofing are additionally provided on the basis of the three levels of waterproofing. The multiple levels of waterproofing include abutment-type waterproofing structures or oil-sealed waterproofing structures. The number of structures is tested and selected according to the waterproofing level.

[0066] The tertiary waterproof structure 330 is in contact with the motor shaft 510 , and the primary waterproof structure 310 , the secondary oil seal structure, and the tertiary waterproof structure 330 are arranged from top to bottom, so that the motor 500 meets the IPX4 waterproof grade requirement.

[0067] In some embodiments, the primary waterproof structure 310 is provided with a first abutting portion 311 , and first inclined surfaces 312 and first curved surfaces 313 are provided on both sides of the first abutting portion 311 , and the first abutting portion 311 is pointed.

[0068] Specifically, the first abutting portion 311 is used to abut against the motor shaft 510, and is formed by the first inclined surface 312 and the first arc surface 313. The first inclined surface 312 is usually arranged on the outside, so that when water stains adhere to the surface of the sealing ring, they slide down to the shaft 510 through the inclined surface and are thrown out with the motor shaft 510 to prevent the water stains from being left on the sealing ring. The first abutting portion 311 can be set to a sharp shape such as a point, so that the area of ​​the first abutting portion 311 abutting against the shaft 510 is small, thereby reducing the friction and wear of the sealing ring.

[0069] In some optional embodiments, the first abutting portion 311 is configured to be an arc-shaped or other smooth shape to prevent the sealing ring body 530 from slipping.

[0070] The primary waterproof structure 310 abuts against the rotating shaft 510 through the first abutting portion 311. The first abutting portion 311 is sharp to reduce the contact area with the motor rotating shaft 510 and further prevent the sealing ring from being damaged by friction. At the same time, the first inclined surface 312 can guide the external water flow to slide down instead of adhering to the sealing ring.

[0071] In some embodiments, the third-level waterproof structure 330 is provided with a second abutting portion 331 , and a second inclined surface 332 and a first plane 333 are provided on both sides of the second abutting portion 331 ; the second abutting portion 331 is arc-shaped.

[0072] Specifically, the first abutting portion 311 is used to abut against the motor shaft 510, and is formed by the second inclined surface 332 and the first plane 333. The second abutting portion 331 is set to a relatively smooth shape such as an arc, so that the area of ​​the second abutting portion 331 abutting against the shaft 510 is small, and at the same time, it can also prevent the entire sealing ring body 530 from sliding out of the waterproof groove 520 to the motor 500 body.

[0073] The third-level waterproof structure 330 abuts against the rotating shaft 510 via the second abutting portion 331 . The second abutting portion 331 is arc-shaped and can prevent the entire sealing ring from slipping off.

[0074] In some embodiments, the secondary oil seal waterproof 320 is arranged between the first abutting portion 311 and the second abutting portion 331 , and the secondary oil seal waterproof 320 includes a first side surface 321 , and the secondary oil seal waterproof is composed of the first side surface 321 , the second inclined surface 332 , and the first arc surface 313 .

[0075] Specifically, a cavity is formed by the first side surface 321, the second inclined surface 332 and the first arc surface 313, and the oil seal liquid is arranged in the cavity. In this way, the volume of the traditional oil seal is reduced, making the entire waterproof structure lighter.

[0076] The secondary oil seal waterproof 320 is arranged between the first abutting portion 311 and the second abutting portion 331, and is enclosed by the primary waterproof structure 310 and the secondary oil seal waterproof 320. The use of oil seal can improve the waterproof performance and further promote the waterproofness of the motor 500 to reach IPX4 level.

[0077] In some embodiments, the sealing ring body 530 is provided with a first platform 340 and a second platform 350 , and the deformation groove 210 is provided between the first platform 340 and the second platform 350 .

[0078] Specifically, a deformation groove 210 is provided between the first platform 340 and the second platform 350. The shape and size of the deformation groove 210 are set according to the degree of deformation required by the motor 500. Furthermore, a slope can be set, and the notch of the deformation groove 210 is set larger than the bottom, so that more force can be applied to the abutment part 300 when interference occurs.

[0079] The deformation groove 210 is disposed between the first platform 340 and the second platform 350 to provide a deformation space for the interference fit generated when the motor shaft 510 and the sealing ring are combined.

[0080] In some embodiments, the protrusion 220 is disposed on the other side of the bottom end of the deformation groove 210 and extends in a direction away from the abutting portion 300 .

[0081] Specifically, the protrusion 220 is arranged on the other side of the bottom end of the deformation groove 210, and the protrusion direction of the protrusion 220 is an oblique direction that is opposite to the notch of the deformation groove 210 and combined with the direction of the principle abutment portion 300. After the sealing ring is installed with interference fit, the protrusion 220 can generate stress to compress the abutment portion 300, and then the abutment portion 300 presses the motor shaft 510.

[0082] Since the protrusion 220 is arranged to extend in a direction away from the abutting portion 300 , the protrusion 220 is pressed toward the abutting portion 300 after the sealing ring and the motor 500 are installed to produce an interference fit.

[0083] In some embodiments, a third inclined surface 110 and a fourth inclined surface 120 are disposed on both sides of the bottom end of the clamping portion 100 , and the third abutting portion 130 is pointed.

[0084] Specifically, by setting the third inclined surface 110 and the fourth inclined surface 120, the third abutting portion 130 is pointed or sharp. The effect of this structure is that when the sealing ring inevitably falls from the waterproof groove 520 and falls on the motor 500, the friction force generated by the small contact surface of the third abutting portion 130 is small, thereby reducing the wear of the motor 500 and the sealing ring.

[0085] The third abutting portion 130 is sharp, which can prevent the sealing ring from falling off the motor 500 when the sealing ring is installed on the rotating shaft 510, thereby causing wear of the motor 500 and the sealing ring.

[0086] In some embodiments, the diameter of the connection hole 400 is smaller than the diameter of the motor shaft 510 , and the outer diameter of the sealing ring body 530 is smaller than the inner diameter of the motor waterproof groove 520 .

[0087] Specifically, the diameter of the connecting hole 400 is set smaller than the diameter of the motor shaft 510, and the outer diameter of the sealing ring body 530 is smaller than the inner diameter of the motor waterproof groove 520, so that the entire waterproof ring has an interference fit with the waterproof groove 520 during installation, thereby preventing the sealing ring from falling off the waterproof groove 520. At the same time, the interference fit during installation can cause the abutment portion 300 to be closer to the motor shaft 510.

[0088] The diameter of the connecting hole 400 is smaller than the diameter of the motor shaft 510 and the outer diameter of the sealing ring body 530 is smaller than the inner diameter of the motor waterproof groove 520, so that during installation, the sealing ring body 530 and the motor waterproof groove 520 are interference fit.

[0089] Embodiment 3:

[0090] like Figure 5 As shown, based on Example 1, this embodiment describes and limits the usage scenarios of the sealing ring structures proposed in Examples 1 and 2.

[0091] In a second aspect, a waterproof motor 500 includes the sealing ring structure of any one of Example 1 and / or Example 2.

[0092] Specifically, the motor 500 is provided with a waterproof groove 520, which is arranged on the mounting surface of the rotating shaft 510 of the motor 500.

[0093] The sealing ring is provided on the small motor 500 so that the small motor 500 can reach the waterproof level of IPX4.

[0094] The serial numbers of the utility model embodiments are only for description and do not represent the advantages and disadvantages of the embodiments. The above are only preferred embodiments of the utility model, and do not limit the patent scope of the utility model. Any equivalent device or equivalent process transformation made by using the contents of the utility model specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the utility model.

Claims

1. A sealing ring structure, characterized in that: The invention comprises a sealing ring body (530), wherein the sealing ring body (530) has a connecting hole (400); the sealing ring body (530) further comprises: A clamping portion (100) is arranged at the outer end of the sealing ring body (530) and is used for clamping in the motor waterproof groove (520); A deformation portion (200) is arranged inside the sealing ring body (530); as well as an abutment portion (300) disposed on the deformation portion (200) and enclosing a connection hole (400); the abutment portion (300) is provided with a three-level waterproof structure (330), and is sealed and connected to a motor shaft (510) passing through the connection hole (400) through the three-level waterproof structure (330); The deformation portion (200) is provided with a deformation groove (210) and a protrusion (220).

2. The sealing ring structure according to claim 1, characterized in that: The three-level waterproof structure (330) comprises a primary waterproof structure (310), a secondary oil seal waterproof (320) and a tertiary waterproof structure (330).

3. The sealing ring structure according to claim 2, characterized in that: The primary waterproof structure (310) is provided with a first abutting portion (311), and a first inclined surface (312) and a first curved surface (313) are provided on both sides of the first abutting portion (311), and the first abutting portion (311) is pointed.

4. The sealing ring structure according to claim 3, characterized in that: The third-level waterproof structure (330) is provided with a second abutment portion (331), and second inclined surfaces (332) and first planes (333) are provided on both sides of the second abutment portion (331); the second abutment portion (331) is arc-shaped.

5. The sealing ring structure according to claim 4, characterized in that: The secondary oil seal waterproof (320) is arranged between the first abutting portion (311) and the second abutting portion (331), and the secondary oil seal waterproof (320) includes a first side surface (321). The secondary oil seal waterproof (320) is composed of the first side surface (321), the second inclined surface (332) and the first curved surface (313).

6. The sealing ring structure according to claim 1, characterized in that: The sealing ring body (530) is provided with a first platform (340) and a second platform (350), and the deformation groove (210) is provided between the first platform (340) and the second platform (350).

7. The sealing ring structure according to claim 6, characterized in that: The protruding portion (220) is arranged on the other side of the bottom end of the deformation groove (210) and extends in a direction away from the abutting portion (300).

8. The sealing ring structure according to claim 1, characterized in that: A third inclined surface (110) and a fourth inclined surface (120) are provided on both sides of the bottom end of the clamping portion (100), and the third abutting portion (130) is pointed.

9. The sealing ring structure according to claim 1, characterized in that: The hole diameter of the connection hole (400) is smaller than the diameter of the motor shaft (510), and the outer diameter of the sealing ring body (530) is smaller than the inner diameter of the motor waterproof groove (520).

10. A waterproof motor (500), characterized in that: A sealing ring structure comprising any one of claims 1-9.

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