Improved plastic bearing seat assembly

Abstract

The utility model discloses an improved plastic bearing seat assembly. The improved plastic bearing seat assembly comprises a bearing seat, an inner sleeve, a bearing and a sealing component, the bearing seat and the inner sleeve are both made of plastic, steel is replaced by plastic, rusting and abrasion are effectively avoided, the production cost is reduced, and the service life is prolonged. The bearing seat is formed by coaxially and integrally injecting the base and the positioning seat, so that the concentricity problem of a traditional split structure is solved, and abrasion and running resistance are reduced. And the inner sleeve is in positioning fit with the bearing seat through the first positioning part and the second positioning part to ensure synchronous operation. The sealing assembly adopts a composite sealing ring formed by staggering three layers of sealing rings, so that the sealing performance is remarkably improved, dust, impurities and water are prevented from entering, and meanwhile, leakage of lubricating oil is avoided. The utility model has the advantages of simple structure, convenience in processing and manufacturing, low maintenance cost and long service life, and is favorable for reducing the production and operation cost of enterprises.

Description

TECHNICAL FIELD

[0001] The utility model relates to a bearing seat field especially is related to an improved plastic bearing seat assembly. BACKGROUND

[0002] In mechanical transmission and rotating equipment, bearing seat is a key supporting component, used for fixing bearing and ensuring its normal operation. In the related art, some bearing seat products are mainly composed of split base and positioning seat, and are made of steel material as a whole, which leads to high production cost, short service life due to corrosion of metal material, and problems of eccentricity, large wear and large running resistance due to high machining precision requirement and low production efficiency of split structure realized through multiple machining and assembly processes. In addition, the sealing structure of these bearing seat products is relatively simple, mostly single-layer sealing, and a few double-layer sealing, with poor sealing effect and difficulty in meeting the use requirement. SUMMARY

[0003] The utility model discloses at least one of the technical problems existing in the prior art. Therefore, one purpose of the utility model is to provide an improved plastic bearing seat assembly.

[0004] The technical scheme of the utility model is as follows: an improved plastic bearing seat assembly, characterized in that it comprises a bearing seat, an inner sleeve, a bearing and a sealing assembly.

[0005] The bearing seat and the inner sleeve are plastic parts, the bearing seat is integrally formed by a base and a positioning seat coaxially, the base and the positioning seat are annular seats, the base is provided with a first limiting baffle ring with a middle hole at an axial end away from the positioning seat, and the inner wall of the base is provided with a first positioning part.

[0006] The outer wall of the inner sleeve is provided with a second positioning part, an axial end of the inner wall of the inner sleeve is provided with a second limiting baffle ring with a middle hole, the inner sleeve is arranged in the base and abuts against the second limiting baffle ring, the first positioning part and the second positioning part are positioned and matched, and the bearing is arranged in the stepped groove and abuts against the axial groove surface of the stepped groove.

[0007] The sealing assembly is arranged in the positioning seat, and the sealing assembly is a composite sealing ring formed by three-layer staggered sealing rings.

[0008] Further, the outer circumferential surface of the positioning seat is provided with a positioning ring, and the side surface of the positioning ring facing the base is a first tapered inclined surface that does not shrink.

[0009] Further, the first positioning part is a positioning rib extending in the axial direction of the bearing seat, the second positioning part is a positioning groove extending in the axial direction of the bearing seat, and the positioning rib and the positioning groove are inserted and matched.

[0010] Further, the sealing assembly comprises an outer sealing ring, an inner sealing ring and an intermediate sealing ring;

[0011] The intermediate sealing ring is arranged in the locating seat and abuts against the outer ring of the bearing and the inner sleeve, and a plurality of annular first sealing grooves are arranged on the surface of the one axial end of the intermediate sealing ring in a concentric manner, and a plurality of annular second sealing grooves are arranged on the surface of the other axial end of the intermediate sealing ring in a concentric manner;

[0012] The one axial end of the outer sealing ring is provided with a first flange, a plurality of annular first sealing plates are arranged on the first flange in a concentric manner, the other axial end of the outer sealing ring is inserted into the intermediate sealing ring, and the plurality of first sealing plates are inserted into the plurality of first sealing grooves one by one;

[0013] The one axial end of the inner sealing ring is provided with a second flange, a plurality of annular second sealing plates are arranged on the second flange in a concentric manner, the other axial end of the inner sealing ring is inserted into the intermediate sealing ring, and the plurality of second sealing plates are inserted into the plurality of second sealing grooves one by one, and the inner sealing ring abuts against the other axial end of the outer sealing ring and the inner ring of the bearing.

[0014] Further, an annular clamping groove is arranged on the inner wall of the locating seat, and an annular protrusion is arranged on the outer wall of the intermediate sealing ring, and the protrusion is clamped into the clamping groove.

[0015] Further, the surface of the side of the protrusion facing the inner sleeve is a second tapered inclined surface that continuously shrinks.

[0016] Further, the bearing is a double-groove ball bearing with sealing on both sides.

[0017] Compared with the prior art, the utility model has the beneficial effects as follows:

[0018] 1. Steel is replaced by plastic, the bearing seat and the inner sleeve are plastic parts, compared with the conventional steel metal bearing seat, the production cost can be reduced, and there is no rusting and wearing condition, maintenance is convenient, and the product service life can be improved.

[0019] 2. The original split base and the locating seat are integrally injection molded into a whole bearing seat, so that the bearing seat becomes an integral part coaxially arranged with the base and the locating seat, which is more convenient for processing, and the integral structure helps to solve the problems of the original split structure bearing seat, such as running eccentricity, large wear and large running resistance.

[0020] 3. The inner sleeve and the bearing seat are positioned and matched through the first positioning part and the second positioning part, so that the inner sleeve can keep synchronous operation with the bearing seat.

[0021] 4. The sealing assembly used is a composite sealing ring formed by three layers of sealing rings staggered, thereby effectively improving the sealing property of the device, preventing dust, impurities and moisture from the outside from entering the bearing and preventing the lubricating oil of the bearing from leaking.

[0022] Additional aspects and advantages of the present application will be given in part in the following description, and will become apparent from the description, or will be learned by practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor on the basis of these drawings:

[0024] Figure 1 is the overall schematic view of the present application;

[0025] Figure 2 is the sectional view of the present application;

[0026] Figure 3 is Figure 2 the schematic view of the sealing assembly part in the present application;

[0027] Figure 4 is the sectional view of the present application.

[0028] Reference signs:

[0029] 1. Bearing seat; 11. Base; 12. Positioning seat; 13. First limiting ring; 14. Positioning ring; 15. First conical slope; 16. Clamping groove;

[0030] 2. Inner sleeve; 21. Second limiting ring;

[0031] 3. Bearing;

[0032] 4. Intermediate sealing ring; 41. First sealing groove; 42. Second sealing groove; 43. Projection; 44. Second conical slope;

[0033] 5. Outer sealing ring; 51. First sealing plate;

[0034] 6. Inner sealing ring; 61. Second sealing plate. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme of the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model below. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0036] The embodiments of the utility model will be described in detail below, and examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout. In the description of the utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "vertical", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0037] In the utility model, unless explicitly specified and limited, the terms "mounting", "connection", "connecting", "fixing" and the like should be understood broadly, for example, can be fixed connection, can also be detachable connection or integrally connected, can be mechanical connection, can also be electrical connection, can be directly connected, can also be indirectly connected through an intermediate medium, and can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0038] In the description of the utility model, "first feature" and "second feature" can include one or more features. In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include one or more features.

[0039] As Figures 1-3 The improved plastic bearing seat 1 assembly shown in the figure comprises a bearing seat 1, an inner sleeve 2, a bearing 3 and a sealing assembly.

[0040] The bearing seat 1 and the inner sleeve 2 are both plastic parts, so compared with the conventional steel metal bearing seat 1, the scheme uses plastic instead of steel, so there is no rusting and wear condition, and the product service life can be improved.

[0041] The bearing seat 1 mainly comprises a base 11 and a positioning seat 12. In a conventional steel bearing seat 1, the base 11 and the positioning seat 12 are combined in a split type. After the bearing seat 1 of the present scheme is made of plastic material, the base 11 and the positioning seat 12 can be integrally injection molded, so that the bearing seat 1 becomes an integral piece with the base 11 and the positioning seat 12 coaxially arranged, which is more convenient for processing, and the integral structure helps to solve the problems of the original split type bearing seat 1, such as eccentric operation, large wear, and large operation resistance.

[0042] As shown in Figure 3 , the base 11 and the positioning seat 12 are both annular seats. The base 11 is provided with a first limiting ring 13 with a middle hole at an axial end away from the positioning seat 12. The inner wall of the base 11 is provided with a first positioning part, the outer wall of the inner sleeve 2 is provided with a second positioning part, and the inner wall of the inner sleeve 2 is provided with a second limiting ring 21 with a middle hole at an axial end. The inner sleeve 2 is arranged in the base 11 and abuts against the second limiting ring 21. The first positioning part and the second positioning part are positioned and matched. The bearing 3 is arranged in the stepped groove and abuts against the axial groove surface of the stepped groove. The first positioning part and the second positioning part provided in the present scheme can make the inner sleeve 2 keep synchronous operation with the bearing seat 1 after installation.

[0043] The sealing assembly is arranged in the positioning seat 12. The sealing assembly is a composite sealing ring formed by three layers of sealing rings staggered, which can effectively improve the sealing performance of the device.

[0044] In some embodiments, as shown in Figure 1 and Figure 2 , the outer peripheral surface of the positioning seat 12 is provided with a positioning ring 14. The side surface of the positioning ring 14 facing the base 11 is a first tapered surface 15 that continuously shrinks. Thus, in actual use, the bearing seat 1 can be easily inserted and installed into the mounting hole or other position of the equipment.

[0045] In some embodiments, the first positioning part is a positioning rib extending along the axial direction of the bearing seat 1, and the second positioning part is a positioning groove extending along the axial direction of the bearing seat 1. The positioning rib and the positioning groove are inserted and matched. This positioning and matching form is simple and easy to realize.

[0046] Of course, in addition to this positioning form, those skilled in the art can also use other forms to realize the synchronous operation of the inner sleeve 2 and the bearing seat 1. For example, secondary injection wrapping can be used to combine the inner sleeve 2 and the bearing seat 1 together through two injection processes to form an integral part.

[0047] In some embodiments, as shown in Figure 3As shown, the sealing assembly comprises an outer sealing ring 5, an inner sealing ring 6 and an intermediate sealing ring 4. The intermediate sealing ring 4 is arranged in the positioning seat 12 and abuts against the outer ring of the bearing 3 and the inner sleeve 2. The surface of the axial one end of the intermediate sealing ring 4 is provided with a plurality of annular first sealing grooves 41 arranged concentrically. The surface of the axial other end of the intermediate sealing ring 4 is provided with a plurality of annular second sealing grooves 42 arranged concentrically. The axial one end of the outer sealing ring 5 is provided with a first flange. The first flange is provided with a plurality of annular first sealing plates 51 arranged concentrically. The axial other end of the outer sealing ring 5 is inserted into the intermediate sealing ring 4. The plurality of first sealing plates 51 are inserted into the plurality of first sealing grooves 41 one by one. The axial one end of the inner sealing ring 6 is provided with a second flange. The second flange is provided with a plurality of annular second sealing plates 61 arranged concentrically. The axial other end of the inner sealing ring 6 is inserted into the intermediate sealing ring 4. The plurality of second sealing plates 61 are inserted into the plurality of second sealing grooves 42 one by one. The inner sealing ring 6 abuts against the axial other end of the outer sealing ring 5 and the inner ring of the bearing 3.

[0048] Thus, the three sealing rings form a composite nested form. Not only can the inner sleeve 2 and the bearing 3 be positioned, but also the sealing performance of the device can be effectively improved. The device can effectively prevent dust, impurities and water from entering the bearing 3 and prevent the lubricating oil of the bearing 3 from leaking.

[0049] In further settings, the inner wall of the positioning seat 12 is provided with an annular clamping groove 16. The outer wall of the intermediate sealing ring 4 is provided with an annular protrusion 43. The protrusion 43 is clamped into the clamping groove 16. Thus, when the intermediate sealing ring 4 is installed, the intermediate sealing ring 4 is not easy to deviate.

[0050] In order to facilitate the insertion and installation of the intermediate sealing ring 4, the inner sleeve 2 is provided with a positioning groove 21. Figure 3 As shown, the surface of the protrusion 43 on the side facing the inner sleeve 2 is a second tapered surface 44 that continuously shrinks.

[0051] The bearing 3 used is a double-groove ball bearing 3 with seals on both sides. Thus, the sealing performance of the bearing 3 can be further improved, and the service life of the bearing 3 can be ensured.

[0052] In summary, the present scheme has the following characteristics:

[0053] 1. Plastic instead of steel. The bearing seat 1 and the inner sleeve 2 are plastic parts. Compared with conventional steel metal bearing seats 1, the production cost can be reduced, there is no rusting and wear, maintenance is convenient, and the service life of the product can be improved.

[0054] 2. The original split base 11 and the positioning seat 12 are now integrally injection molded into a whole bearing seat 1. Thus, the bearing seat 1 becomes an integral part of the coaxially arranged base 11 and positioning seat 12, which is more convenient for machining. Meanwhile, the integral structure helps to solve the problems of the original split structure bearing seat 1, such as running eccentricity, large wear and large running resistance.

[0055] 3、The inner sleeve 2 is positioned and matched with the bearing seat 1 through the first positioning part and the second positioning part, so that the inner sleeve 2 can keep synchronous operation with the bearing seat 1;

[0056] 4、The sealing assembly used is a composite sealing ring formed by three layers of sealing rings staggered, so that the sealing property of the device can be effectively improved, dust, impurities and moisture from the outside can be effectively prevented from entering the bearing 3, and the lubricating oil of the bearing 3 can also be prevented from leaking.

[0057] Although some embodiments of the utility model have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the utility model, and all are within the protection scope of the utility model claim.

Claims

1. An improved plastic bearing seat assembly, characterized by, The utility model relates to a bearing seat, inner sleeve, bearing and sealing assembly, and relates to the technical field of bearing. The bearing seat and the inner sleeve are both plastic parts, the bearing seat is integrally formed by a base and a positioning seat coaxially, the base and the positioning seat are both annular seats, the base is provided with a first limiting baffle ring with a middle opening at an axial end away from the positioning seat, and the inner wall of the base is provided with a first positioning part. The outer wall of the inner sleeve is provided with a second positioning part, an axial end of the inner wall of the inner sleeve is provided with a second limiting baffle ring with a middle opening, the inner sleeve is arranged in the base and abuts against the second limiting baffle ring, the first positioning part and the second positioning part are positioned and matched, and the bearing is arranged in the stepped groove and abuts against the axial groove surface of the stepped groove. The sealing assembly is arranged in the positioning seat and is a composite sealing ring formed by three layers of staggered sealing rings. The outer circumferential surface of the positioning seat is provided with a positioning ring, and the side surface of the positioning ring facing the base is a first tapered inclined surface that continuously contracts.

2. The improved plastic bearing seat assembly of claim 1, wherein, The first positioning part is a positioning rib extending along the axial direction of the bearing seat, the second positioning part is a positioning groove extending along the axial direction of the bearing seat, and the positioning rib and the positioning groove are inserted and matched.

3. The improved plastic bearing seat assembly of claim 1, wherein, The sealing assembly comprises an outer sealing ring, an inner sealing ring and an intermediate sealing ring.

4. The improved plastic bearing seat assembly of claim 1, wherein, The intermediate sealing ring is arranged in the positioning seat and abuts against the outer ring of the inner sleeve and the bearing, an axial end surface of the intermediate sealing ring is provided with a plurality of annular first sealing grooves arranged concentrically, and the other axial end surface of the intermediate sealing ring is provided with a plurality of annular second sealing grooves arranged concentrically. An axial end of the outer sealing ring is provided with a first flange, the first flange is provided with a plurality of annular first sealing plates arranged concentrically, the other axial end of the outer sealing ring is inserted into the intermediate sealing ring, and a plurality of first sealing plates and a plurality of first sealing grooves are one-to-one correspondingly inserted. An axial end of the inner sealing ring is provided with a second flange, the second flange is provided with a plurality of annular second sealing plates arranged concentrically, the other axial end of the inner sealing ring is inserted into the intermediate sealing ring, a plurality of second sealing plates and a plurality of second sealing grooves are one-to-one correspondingly inserted, and the inner sealing ring abuts against the other axial end of the outer sealing ring and the inner ring of the bearing. The inner wall of the positioning seat is provided with an annular clamping groove, and the outer wall of the intermediate sealing ring is provided with an annular protrusion, the protrusion is clamped into the clamping groove.

5. The improved plastic bearing seat assembly of claim 4, wherein, The side surface of the protrusion facing the inner sleeve is a second tapered inclined surface that continuously contracts.

6. The improved plastic bearing seat assembly of claim 5, wherein, The bearing is a double-groove ball bearing with sealing on both sides.

7. The improved plastic bearing seat assembly of claim 1, wherein, ​

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