Motor bearing

Abstract

The utility model discloses a motor bearing which comprises an inner ring, an outer ring, a retainer, balls and a dustproof cover, the structure of the bearing is improved, the structure of the dustproof cover is improved, the dustproof cover is changed into a split assembly type structure, a ring groove is formed in a first ring body, and a notch of the ring groove is blocked by the ring cover. An elastic block is fixed in the annular groove, a first through hole is formed in the elastic block and the corresponding groove bottom wall, a second through hole is formed in the annular cover, the annular cover can be rotated to enable the second through hole to correspond to the first through hole, then internal lubricating oil and the like are supplemented, then the annular cover is rotated to enable the first through hole and the second through hole to be staggered, and the second through hole corresponds to the elastic block outside the first through hole; and the through hole II is sealed by the elastic block, so that internal lubricating oil can be conveniently supplemented.

Description

Technical Field

[0001] The utility model relates to the technical field of bearing devices, in particular to a motor bearing. Background Art

[0002] Common bearing structures include inner ring, outer ring, cage, ball, dust cover, etc. Ball and cage are installed between the inner ring and outer ring, and dust cover is installed between the ends of the inner ring and outer ring. In order to improve the performance and service life of the bearing, it is generally necessary to fill lubricating oil between the inner and outer rings, but as the lubricating oil passes, it needs to be replenished in time. The operation of replenishing lubricating oil for this type of bearing is more troublesome and needs to be improved. Utility Model Content

[0003] In order to solve at least one of the above technical defects, the utility model provides the following technical solutions:

[0004] The present application document discloses a motor bearing, comprising an inner ring, an outer ring, a retaining frame, a ball, and a dust cover, wherein the ball and the retaining frame are arranged between the inner ring and the outer ring, and a dust cover is arranged at the end between the inner ring and the outer ring, and the dust cover comprises a first ring body, a ring cover, and an elastic block, an annular groove is concentrically arranged at the end face of the first ring body, and a ring cover is arranged at the notch of the annular groove, the ring cover is slidably connected to the groove wall of the annular groove, elastic blocks are arranged at intervals at the bottom wall of the annular groove below the ring cover, and the elastic blocks are abutted against the ring cover, a through hole 1 is arranged in the middle of the elastic block and at the corresponding bottom wall of the annular groove, and a through hole 2 is arranged on the ring cover, and the size of the through hole 1 and the through hole 2 is ≤1 / 3 of the length of the elastic block.

[0005] In this scheme, the structure of the bearing is improved, with emphasis on the structure of the dust cover, which is changed into a split assembly type structure, a ring groove is formed on the first ring body, the notch of the ring groove is sealed with a ring cover, an elastic block is fixed in the ring groove, and through hole one is formed on the elastic block and at the corresponding groove bottom wall, and through hole two is formed on the ring cover. The ring cover can be rotated to make through hole two correspond to through hole one, and then the internal lubricating oil is replenished, and then the ring cover is rotated to make through hole one and through hole two misaligned, and make through hole two correspond to the elastic block outside through hole one, and through hole two is sealed with the elastic block. This structure facilitates the replenishment of internal lubricating oil.

[0006] Furthermore, the inner and outer edges of the ring cover are coated with an elastic layer, and the groove walls on both sides of the ring groove are provided with a clamping groove, the inner and outer edges of the ring cover are in the clamping groove, and the edges coated with the elastic layer are convenient for rotating the ring cover and have good sealing performance.

[0007] Furthermore, a protrusion is arranged on the outer end surface of the ring cover, and the addition of the protrusion facilitates the force to rotate the ring cover, making it more convenient to use.

[0008] Furthermore, three protrusions are evenly spaced apart on the outer end surface of the ring cover, so that multiple points of force can be applied to facilitate the rotation of the ring cover.

[0009] Furthermore, three elastic blocks are evenly distributed in the annular groove, and a through hole 2 is arranged on the ring cover. Multiple elastic blocks and multiple through holes 1 facilitate the replenishment of lubricating oil at multiple points, and the single through hole 2 configuration helps to improve the sealing performance.

[0010] Compared with the prior art, the utility model has the following beneficial effects:

[0011] 1. The utility model improves the structure of the bearing, and the ring cover can be rotated to make the through hole one correspond to the through hole two to add lubricating oil, and the ring cover can be rotated to make the through hole one and the through hole two misaligned and the through hole two can be sealed with an elastic block to maintain the seal, which is convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0013] Figure 1 is a schematic structural diagram of the motor bearing in Example 1;

[0014] Figure 2 It is a schematic diagram of the structure of the ring cover at the ring groove;

[0015] Figure 3 It is a schematic diagram of the distribution structure of the elastic block and the through hole in the ring groove;

[0016] Wherein, the accompanying drawings are marked as follows:

[0017] 1. Outer ring; 2. Inner ring; 3. Ball; 4. Cage; 5. Dust cover; 51. First ring body; 52. Ring cover; 53. Elastic layer; 54. Elastic block; 55. Bump; 56. Through hole one; 57. Ring groove; 58. Through hole two. DETAILED DESCRIPTION

[0018] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0019] Example 1

[0020] like Figure 1 , Figure 2 , Figure 3 As shown, in this example, a motor bearing includes an inner ring 2, an outer ring 1, a retaining frame 4, balls 3, and a dust cover 5, wherein the balls 3 and the retaining frame 4 are installed between the inner ring 2 and the outer ring 1 according to a conventional structure, and an annular dust cover 5 is installed at the end between the inner ring 2 and the outer ring 1. The above are all conventional structures and will not be repeated here.

[0021] In this example, the structure of the dust cover is improved. Specifically, the dust cover 5 includes a first ring body 51, a ring cover 52, and an elastic block 54. A concentric ring groove 57 is formed at the end surface of the first ring body 51, and the ring cover 52 is installed at the notch of the ring groove 57.

[0022] The ring cover 52 is also in the shape of a ring body, and the inner and outer edges of the ring cover 52 are covered with an elastic layer 53, such as an elastic material, and grooves are formed on the groove walls on both sides of the ring groove 57 along the circumferential direction, that is, the card grooves. The inner and outer edges of the ring cover 52 are in the corresponding card grooves. Under the friction resistance of the elastic layer 53, the rotation of the ring cover 52 relative to the first ring body 51 is limited. Under the intervention of external force, it can rotate relatively to each other for sliding fit, and the elastic layer also helps to improve the sealing performance.

[0023] Elastic blocks 54 are fixed at intervals on the bottom wall of the ring groove 57 below the ring cover 52. The elastic blocks are, for example, arc-shaped bodies formed of elastic material. Three elastic blocks 54 are evenly distributed at intervals to limit the thickness of the elastic blocks. When the top surface of the elastic block 54 abuts against the bottom surface of the ring cover 52, the elastic blocks push up and down to help maintain the stability and sealing of the ring cover and the first ring body.

[0024] In this example, a through hole 1 56 is formed in the middle of the elastic block 54 and at the corresponding bottom wall of the annular groove, and a single through hole 2 58 is formed on the ring cover 52. The ring cover can be rotated to make the through hole 1 correspond to or be misaligned with the through hole 2. When they correspond, they can be used to add lubricating oil, etc., and when they are misaligned, a seal is formed.

[0025] In this example, the size of through hole one 56 and through hole two 58 is limited to ≤ 1 / 3 of the length of the elastic block. When the ring cover 52 is rotated to misalign through hole one 56 and through hole two 58, through hole two 58 on the ring cover 52 corresponds to the elastic block outside through hole one 56, and the elastic block blocks through hole two to maintain sealing.

[0026] In this example, a protrusion 55 is formed on the outer end surface of the ring cover 52. If three protrusions 55 are evenly spaced, force can be applied to the protrusion to push the ring cover to rotate, so that the first through hole and the second through hole are offset or corresponded.

[0027] The above are only preferred implementations of the utility model. The protection scope of the utility model is not limited to the above embodiments. All technical solutions under the idea of ​​the utility model belong to the protection scope of the utility model. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the utility model should also be regarded as the protection scope of the utility model.

Claims

1. A motor bearing, comprising an inner ring, an outer ring, a cage, balls, and a dust cover, wherein the balls and the cage are arranged between the inner ring and the outer ring, and a dust cover is arranged at the end between the inner ring and the outer ring, characterized in that: The dust cover includes a first ring body, a ring cover, and an elastic block. A ring groove is concentrically arranged at the end face of the first ring body and a ring cover is arranged at the notch of the ring groove. The ring cover is slidably connected to the groove wall of the ring groove. Elastic blocks are arranged at intervals at the bottom wall of the ring groove below the ring cover and the elastic blocks are abutted against the ring cover. A through hole 1 is arranged in the middle of the elastic block and at the corresponding bottom wall of the ring groove, and a through hole 2 is arranged on the ring cover. The size of the through hole 1 and the through hole 2 is ≤1 / 3 of the length of the elastic block.

2. A motor bearing according to claim 1, characterized in that: The inner and outer edges of the ring cover are covered with an elastic layer, and the groove walls on both sides of the ring groove are provided with clamping grooves, and the inner and outer edges of the ring cover are located in the clamping grooves.

3. A motor bearing according to claim 1, characterized in that: A convex block is arranged on the outer end surface of the ring cover.

4. A motor bearing according to claim 3, characterized in that: Three protrusions are evenly spaced on the outer end surface of the ring cover.

5. A motor bearing according to claim 1, characterized in that: Three elastic blocks are evenly distributed in the annular groove, and a second through hole is arranged on the annular cover.

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