Sealing structure and motor cover thereof

Abstract

The utility model discloses a sealing structure and a motor cover thereof, and belongs to the technical field of motor sealing, and the sealing structure comprises a sealing ring which is provided with a slot; the insertion ring is matched with the insertion groove; a plurality of ring grooves are formed in the outer ring surface of the inner ring; and the outer ring is rotatably sleeved on the outer side of the inner ring, and the outer ring is fixedly connected with a convex ring matched with the ring groove, so that the motor cover and the motor shell can be stably sealed, and liquid such as water, oil and the like can be effectively prevented from permeating.

Description

Technical Field

[0001] The utility model relates to the technical field of motor sealing, and particularly relates to a sealing structure and a motor cover thereof. Background Art

[0002] The sealing structure of the motor can ensure that its internal components are not invaded by the external environment and ensure the normal operation of the motor. At present, most traditional motor sealing mechanisms adopt a single sealing ring or gasket. This method can meet the requirements in a static or low-vibration environment, but when the motor is running, due to the influence of vibration and temperature changes, the sealing effect is often greatly reduced. In addition, traditional sealing structures are often difficult to effectively prevent the penetration of liquids such as water and oil, resulting in easy contamination inside the equipment, affecting the performance and service life of the equipment. To solve the above problems, the utility model provides a sealing structure and a motor cover thereof. Content of the Utility Model

[0003] Aiming at the above existing technical deficiencies, the purpose of the utility model is to provide a sealing structure and a motor cover thereof, which can stably seal between the motor cover and the motor housing and can effectively prevent the penetration of liquids such as water and oil.

[0004] To solve the above technical problems, the utility model adopts the following technical solutions: The utility model provides a sealing structure, including:

[0005] A sealing ring, with a slot formed on the sealing ring;

[0006] An insertion ring, which is adapted to the slot;

[0007] An inner ring, with a plurality of annular grooves formed on the outer circumferential surface of the inner ring;

[0008] An outer ring, rotatably sleeved outside the inner ring, and a convex ring adapted to the annular groove is fixedly connected to the outer ring.

[0009] Preferably, the width of the two side walls of the slot near the slot opening is greater than the width near the slot bottom.

[0010] Preferably, the shape of the insertion ring is adapted to the shape of the slot, and a relief groove is formed on one end face of the insertion ring near the side wall of the slot bottom. The material of the insertion ring is an elastic material.

[0011] Preferably, the bottom side wall of the annular groove is an inclined surface with the inner side higher and the outer side lower, and the outer side wall of the annular groove located on the outer side is an inclined surface inclined outward.

[0012] Preferably, a shrapnel is fixedly connected to the bottom side wall of the outer ring groove. The shrapnel is in a "J" shape. The bent end of the shrapnel is fixedly connected to the inner end of the bottom side wall of the ring groove, and the other end is fixedly connected to the outer end of the bottom side wall of the ring groove. The shape of the inner ring surface of the corresponding convex ring is adapted to the shape of the shrapnel, and there is a gap between the convex ring and the shrapnel.

[0013] A motor cover includes a motor cover body and also includes the above-mentioned sealing structure.

[0014] The beneficial effects of the present utility model are as follows:

[0015] Through the arrangement of the sealing ring and the insertion ring, when the insertion ring is inserted into the inside of the insertion slot, the slot wall of the insertion slot will squeeze the insertion ring, so that the insertion ring can be closely attached to the slot wall of the insertion slot, improving the sealing performance between the insertion ring and the insertion slot.

[0016] Through the arrangement of the inner ring and the outer ring, a ring groove is formed on the inner ring, and a convex ring is provided on the outer ring. The convex ring and the ring groove cooperate with each other, which can improve the sealing performance between the inner ring and the outer ring. In addition, the outer ring groove is set as an inclined surface inclined outward, and a shrapnel is provided on the corresponding convex ring. Even if water seeps into the gap, the water seeping in can be thrown out during the startup process of the motor, further improving the sealing performance. Description of the Drawings

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 It is a schematic structural diagram of a sealing structure and a motor cover provided by an embodiment of the present utility model.

[0019] Figure 2 For the present utility model Figure 1 Cross-sectional view.

[0020] Figure 3 For the present utility model Figure 2 Enlarged view at A.

[0021] Figure 4 For the present utility model Figure 2 Enlarged view at B.

[0022] Figure 5 It is an exploded view of the sealing ring and the sealing groove of the present utility model.

[0023] Figure 6 This is an exploded view of the inner ring and outer ring of the present utility model.

[0024] Explanation of reference numerals in the drawings:

[0025] 1. Sealing ring, 2. Slot, 3. Insertion ring, 4. Inner ring, 5. Ring groove, 6. Outer ring, 7. Convex ring, 8. Relief groove, 9. Elastic piece, 10. Motor cover body, 11. Motor housing, 12. Sealing groove. Specific embodiments

[0026] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present utility model.

[0027] The present utility model provides a sealing structure and its motor cover, as Figures 1 to 6 shown.

[0028] Embodiment 1:

[0029] A sealing structure includes a sealing ring 1 and an insertion ring 3. The sealing ring 1 is fixedly connected to the motor cover body 10 and is concentric with the motor cover body 10. A slot 2 is provided on the side surface of the sealing ring 1 away from the motor cover body 10.

[0030] The insertion ring 3 is fixedly connected in a sealing groove 12 provided on the end surface of the motor housing 11. The sealing groove 12 is adapted to the sealing ring 1, and the insertion ring 3 is adapted to the slot 2. When the motor cover body 10 is installed on the motor housing 11, the sealing ring 1 will be inserted into the inside of the sealing groove 12. At this time, the insertion ring 3 will be inserted into the inside of the slot 2. The settings of the sealing ring 1, the sealing groove 12, the slot 2, and the insertion ring 3 can increase the contact area between the motor cover body 10 and the motor housing 11, thereby improving the sealing performance between the motor cover body 10 and the motor housing 11.

[0031] The width of the two side walls of the slot 2 near the slot opening end is greater than the width near the slot bottom end, so that the slot opening of the slot 2 forms an outwardly expanding open shape. The shape of the insertion ring 3 is adapted to the shape of the slot 2. A relief groove 8 is provided on the end surface of the insertion ring 3 near the side wall of the slot bottom of the slot 2, and the material of the insertion ring 3 is an elastic material. After the insertion ring 3 is inserted into the inside of the slot 2, under the action of its own elastic force, the insertion ring 3 will abut against the slot wall of the slot 2, so that the contact between the insertion ring 3 and the slot 2 can be made closer. At the same time, under the abutting action of the insertion ring 3, the sealing ring 1 will also abut against the slot wall of the sealing groove 12, thereby further improving the sealing performance between the motor cover body 10 and the motor housing 11.

[0032] Example Two:

[0033] In the inner and outer directions described below, the side away from the motor housing 11 is the outer side, and the side close to the motor housing 11 is the inner side.

[0034] A sealing structure further includes an inner ring 4 and an outer ring 6. The inner ring 4 is fixedly connected to the shaft body of the motor, and the outer ring 6 is fixedly connected to the outer side surface of the motor cover body 10. A plurality of annular grooves 5 are formed on the outer ring surface of the inner ring 4. The outer ring 6 is sleeved on the outside of the inner ring 4 and is rotatably connected to the inner ring 4. A convex ring 7 adapted to the annular groove 5 is fixedly connected to the outer ring 6. The arrangement of the convex ring 7 and the annular groove 5 can increase the contact area between the inner ring 4 and the outer ring 6, thereby improving the sealing performance between the inner ring 4 and the outer ring 6.

[0035] The bottom side wall of the annular groove 5 is an inclined surface that is higher on the inner side and lower on the outer side. The inner ring surface of the convex ring 7 is also an inclined surface that is higher on the inner side and lower on the outer side and is adapted to the bottom side wall of the annular groove 5. The outer side wall of the annular groove 5 located on the outer side is an inclined surface that slopes outward (the side walls of the annular grooves 5 in other positions are vertical straight surfaces, as shown in Figure 4 and Figure 6 ). Even if water seeps into the space between the inner ring 4 and the outer ring 6, the rotation of the inner ring 4 will be driven after the motor starts. Under the action of centrifugal force, the water seeping into the space between the inner ring 4 and the outer ring 6 can be thrown out, avoiding water remaining between the inner ring 4 and the outer ring 6. When water seeps into the inside of the annular groove 5, because the bottom side wall of the annular groove 5 is an inclined surface that is higher on the inner side and lower on the outer side, the water will remain at one end of the bottom side wall of the annular groove 5 close to the outer side wall under the action of its own gravity. At this time, when the inner ring 4 rotates, the water can be thrown out through the outer side wall of the outer annular groove 5. Also, because the inner side wall of the outer annular groove 5 is vertical, the water will not seep into the subsequent annular grooves 5.

[0036] A "J"-shaped elastic sheet 9 is fixedly connected to the bottom side wall of the annular groove 5 located on the outer side. The bent end of the elastic sheet 9 is fixedly connected to the inner end of the bottom side wall of the annular groove 5, and the other end is fixedly connected to the outer end of the bottom side wall of the annular groove 5. The shape of the inner ring surface of the corresponding convex ring 7 is adapted to the shape of the elastic sheet 9, and there is a gap between the convex ring 7 and the elastic sheet 9. When the inner ring 4 rotates, the bent end of the elastic sheet 9 is deformed by force and will fit with the convex ring 7, while the other end is directly fixedly connected to the bottom side wall of the annular groove 5. Under the action of its own shape, the amount of deformation of the elastic sheet 9 gradually decreases from the inner end to the outer end. Therefore, when the inner ring 4 rotates, the elastic sheet 9 will gradually fit with the convex ring 7 from the inside to the outside, so that the water seeping into the space between the elastic sheet 9 and the convex ring 7 can be gradually squeezed to the outer side wall of the annular groove 5 and thrown out under the action of centrifugal force, which can further avoid water remaining between the inner ring 4 and the outer ring 6.

[0037] Example Three:

[0038] In this embodiment, a motor cover is provided, which includes a motor cover body 10 and also includes the above-mentioned sealing structure.

[0039] Obviously, those skilled in the art can make various modifications and variations to the present utility model without departing from the spirit and scope of the present utility model. Thus, if these modifications and variations of the present utility model fall within the scope of the claims of the present utility model and its equivalent technologies, the present utility model also intends to include these modifications and variations.

Claims

1. A sealing structure, characterized in that, Comprising: A sealing ring (1), on which a slot (2) is provided; An inserting ring (3), which is adapted to the slot (2); An inner ring (4), on the outer ring surface of which a plurality of annular grooves (5) are provided; An outer ring (6), which is rotatably sleeved on the outside of the inner ring (4), and a convex ring (7) adapted to the annular groove (5) is fixedly connected to the outer ring (6).

2. The sealing structure according to claim 1, characterized in that, The width of the two side walls of the slot (2) near the slot opening end is greater than the width near the slot bottom end.

3. A sealing structure according to claim 2, characterized in that, The shape of the inserting ring (3) is adapted to the shape of the slot (2), and a relief groove (8) is provided on one end surface of the inserting ring (3) close to the side wall of the slot bottom of the slot (2), and the material of the inserting ring (3) is an elastic material.

4. A sealing structure according to claim 1, characterized in that, The bottom side wall of the annular groove (5) is an inclined surface with the inner side high and the outer side low, and the outer side wall of the annular groove (5) located on the outer side is an inclined surface inclined outward.

5. A sealing structure according to claim 4, characterized in that, A spring piece (9) is fixedly connected to the bottom side wall of the annular groove (5) located on the outer side. The shape of the spring piece (9) is in the shape of a "J". The bent end of the spring piece (9) is fixedly connected to the inner end of the bottom side wall of the annular groove (5), and the other end is fixedly connected to the outer end of the bottom side wall of the annular groove (5). The shape of the inner ring surface of the corresponding convex ring (7) is adapted to the shape of the spring piece (9), and a gap is left between the convex ring (7) and the spring piece (9).

6. A motor cover, characterized in that, Comprising a motor cover body (10), and further comprising the sealing structure according to any one of claims 1 to 5.

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