Bearing seat
The outer and inner housing structures, cast from BMC material, solve the problems of large weight and high cost of existing bearing housings, achieving lightweight and high-precision machining to meet the operating requirements of household appliances.
Patent Information
- Application Number
- CN202520008237.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-02
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2035-01-02
AI Technical Summary
Existing bearing housings are mainly made of cast aluminum and cast iron, which are heavy, costly, and difficult to machine with high precision, thus failing to meet the operating requirements of household appliances such as washing machines and dishwashers.
The outer and inner bearing housings are cast from BMC material. The inner bearing housing divides the inner cavity of the metal bushing into two bearing chambers and achieves positioning through inlay and positioning bends. The outer and inner bearing housings are integrated to ensure machining accuracy and mechanical strength.
This design achieves lightweighting and cost reduction of the bearing housing while ensuring high-precision internal cavity machining to meet the mechanical strength requirements of household appliances.
Smart Images
Figure CN223578567U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the field of washing machine parts, concretely relates to a bearing seat. BACKGROUND
[0002] At present, washing machine, dish washer, clothes dryer and the like similar household, commercial electric appliances, its bearing seat mainly takes cast aluminium and cast iron as the main body, the mechanical strength, temperature resistance of the bearing seat mainly taking cast aluminium and cast iron as the main body satisfy the working condition requirement of washing machine, dish washer, clothes dryer and the like household electric appliances, but the bearing seat mainly taking cast aluminium and cast iron as the main body is heavy, and the cost is high, and the bearing seat mainly taking cast aluminium and cast iron as the main body is cast into a blank by pouring, and then the inner cavity bearing chamber surface is finished by turning, so as to reach the high-precision requirement of cooperation with the bearing, if the bearing seat is processed by BMC as injection material, it is difficult to finish by turning after forming, therefore, it is difficult to guarantee the high inner cavity machining precision, therefore, in order to avoid the shortcomings in the prior art, it is necessary to improve the prior art. SUMMARY
[0003] The utility model aims at providing a bearing seat, which can ensure the inner cavity machining precision under the condition of reducing weight and cost, satisfy the performance requirement of mechanical strength and satisfy the working condition requirement of washing machine, dish washer, clothes dryer and the like household electric appliances.
[0004] In order to solve the above technical problems, the utility model adopts the following technical scheme:
[0005] A bearing seat, comprising a metal bushing, an outer seat body and an inner seat body, the outer seat body is formed by pouring BMC material on the outer periphery of the metal bushing, the inner seat body is formed by pouring BMC material on the inner periphery of the metal bushing, and the inner seat body divides the inner cavity of the metal bushing into a first bearing chamber at one end and a second bearing chamber at the other end.
[0006] As a preferred scheme of the above bearing seat, the metal bushing is provided with a communication hole for pouring and connecting the outer seat body and the inner seat body into one body.
[0007] As a preferred scheme of the above bearing seat, the two ends of the metal bushing are respectively provided with a first positioning bending part and a second positioning bending part, the first positioning bending part is embedded in one end of the outer seat body, and the second positioning bending part is embedded in the other end of the outer seat body.
[0008] As a preferred scheme of the above bearing seat, the first bearing chamber comprises an oil seal part and a bearing part, the oil seal part is arranged at one end close to the outer side, the bearing part is arranged at a position close to the inner seat body, the inner diameter of the bearing part is smaller than the inner diameter of the oil seal part, so that a stepped structure is formed at the connection between the bearing part and the oil seal part.
[0009] As a preferred scheme of the above bearing seat, the outer seat body is provided with a positioning protrusion in the circumferential direction close to the outer side of the first bearing chamber.
[0010] As a preferred scheme of the above bearing seat, the outer surface of the outer seat body is provided with a reinforcing rib in the circumferential direction.
[0011] As a preferred scheme of the above bearing seat, the inner wall of the inner seat body is outwardly inclined from the middle to both ends.
[0012] The bearing seat provided by the utility model has the advantages that, compared with the prior art, the bearing seat has the advantages that:
[0013] The first bearing chamber and the second bearing chamber are respectively used for mounting the first bearing and the second bearing, the protrusion of the inner seat body to the radial inner side can limit the first bearing in the first bearing chamber and the second bearing in the second bearing chamber, prevent the first bearing and the second bearing from moving inward along the axial direction of the inner seat body after being mounted, and position and axially limit the first bearing and the second bearing, the two ends of the metal bushing are respectively embedded in the two ends of the outer seat body, the metal bushing is prevented from falling off from the outer seat body by embedding, the outer seat body and the inner seat body are made of BMC material, so that the outer seat body and the inner seat body are light in weight, the bearing seat is light in weight, the BMC material is cheaper than cast aluminum and other metals, the manufacturing cost of the bearing seat is reduced, the metal bushing can be precisely machined on the inner cavity surface in a turning mode, so that the high-precision requirement of cooperation with the bearing is met, the machining precision of the inner cavity is ensured, the outer seat body and the inner seat body are integrally formed on the outer periphery and the inner side of the metal bushing by casting with the BMC material, the machining precision of the inner cavity of the bearing seat that cooperates with the bearing is ensured under the conditions of reducing the weight of the bearing seat and reducing the manufacturing cost of the bearing seat. BRIEF DESCRIPTION OF DRAWINGS
[0014] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the drawings of the embodiments will be briefly introduced below.
[0015] Figure 1 is the schematic view of the bearing seat of the utility model;
[0016] Figure 2 is the schematic view of the metal bushing of the utility model;
[0017] Figure 3 is the internal structure schematic view of the metal bushing of the utility model;
[0018] Figure 4 is the internal structure schematic view of the bearing seat of the utility model Figure 1 ;
[0019] Figure 5 is the internal structure schematic view of the bearing seat of the utility model Figure 2 .
[0020] Reference signs in the drawings:
[0021] 100 outer seat; 110 positioning protrusion; 120 reinforcing rib; 130 inner seat; 200 first bearing chamber; 210 oil seal part; 220 bearing part; 230 first positioning bent part; 300 second bearing chamber; 310 second positioning bent part; 400 communication hole; 500 metal bushing. DETAILED DESCRIPTION
[0022] The embodiments of the present application are described in detail below, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only, and are used only for explaining the present application, and cannot be understood as a limitation of the present application.
[0023] In the description of the present application, it should be understood that, in relation to the orientation description, for example, the orientation or position relationship indicated by the upper, lower, front, rear, left, right, etc. is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.
[0024] In the description of the present application, the meaning of several is one or more, the meaning of multiple is two or more, greater than, less than, more than, etc. are understood as not including the number, above, below, etc. are understood as including the number. If it is described as first, second, it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the sequence of indicated technical features.
[0025] In the description of the present application, unless otherwise explicitly limited, the words such as setting, installing, connecting, etc. should be broadly understood, and the person skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical scheme.
[0026] Please refer to Figures 1 to 5 together, the bearing seat provided by the embodiments of the present application will be described.
[0027] As Figures 1 to 5As shown, the utility model discloses a bearing seat, including metal bushing 500, outer seat body 100 and inner seat body 130, the outer seat body 100 is by BMC material cast molding on the outer periphery of metal bushing 500, the inner seat body 130 is by BMC material cast molding on the inner periphery of metal bushing 500, the inner seat body 130 divides the inner chamber of metal bushing 500 into the first bearing chamber 200 of one end and the second bearing chamber 300 of the other end.
[0028] Specifically, the diameters of the first bearing chamber 200 and the second bearing chamber 300 are different, the diameter of the first bearing chamber 200 is greater than that of the second bearing chamber 300, the first bearing chamber 200 is used for installing a first bearing, the first bearing is used for connecting with a rotating shaft of a washing machine barrel, and the second bearing chamber 300 is used for installing a second bearing, the second bearing is used for connecting with a rotating shaft of a belt pulley. In actual work, the diameter of the first bearing is generally greater than that of the second bearing. Therefore, the diameters of the inner seat body 130 at one end close to the first bearing chamber 200 and at one end close to the second bearing chamber 300 are also different, but the diameter of the inner seat body 130 at one end close to the first bearing chamber 200 is less than the inner diameter of the first bearing chamber 200, and the diameter of the inner seat body 130 at one end close to the second bearing chamber 300 is less than the inner diameter of the second bearing chamber 300, so as to ensure that the inner seat body 130 can form a stepped structure at both ends to play a limiting role.
[0029] Exemplarily, the metal bushing 500 is provided with a communication hole 400 for integrally connecting the outer seat body 100 and the inner seat body 130. The communication hole 400 enables the inner seat body 130 and the outer seat body 100 to be connected to each other to form an integrated structure. In this way, the inner seat body 130 and the outer seat body 100 can ensure uniformity of material and consistency of mechanical properties through one-time casting molding, and the mechanical strength of the seat body is higher, and the cost of separate processing and assembly of multiple components is reduced.
[0030] Exemplarily, the metal bushing 500 is provided with a first positioning bending part 230 and a second positioning bending part 310 at two ends respectively. The first positioning bending part 230 is embedded in one end of the outer seat body 100, and the second positioning bending part 310 is embedded in the other end of the outer seat body 100. The first positioning bending part 230 and the second positioning bending part 310 are both bent outward along the axial direction of the outer seat body 100, so that the integrated metal bushing 500 cannot be deviated along the axial direction of the seat body, thereby playing a positioning role.
[0031] Exemplarily, the first bearing chamber 200 comprises an oil seal part 210 and a bearing part 220, the oil seal part 210 is arranged at one end close to the outer side, the bearing part 220 is arranged close to the inner seat body 130, the inner diameter of the bearing part 220 is smaller than the inner diameter of the oil seal part 210, so that a stepped structure is formed at the connection between the bearing part 220 and the oil seal part 210, the first bearing chamber 200 is used for arranging a first bearing, the first bearing is used for being connected with the rotating shaft of the washing machine barrel, therefore, the place for arranging the oil seal is required, by making the inner diameter of the bearing part 220 smaller than the inner diameter of the oil seal part 210, the stepped structure is processed, the oil seal is limited, the inner cavity of the first bearing chamber 200 can be arranged with the first bearing and the oil seal, and assembly is convenient.
[0032] Exemplarily, the outer seat body 100 is provided with a positioning protrusion 110 close to the outer side of the first bearing chamber 200 in the circumferential direction, the positioning protrusion 110 is connected with the washing machine barrel, and plays a role of positioning and strengthening the mechanical strength of the seat body.
[0033] Exemplarily, the inner wall of the inner seat body 130 is inclined outward from the middle to both ends, the inner seat body 130 is integrated with the seat body, and when casting, the inner wall of the inner seat body 130 is inclined outward from the middle to both ends, so that demolding after casting is facilitated.
[0034] Exemplarily, the outer surface of the outer seat body 100 is provided with a reinforcing rib 120 in the circumferential direction, the reinforcing rib 120 is used for strengthening the strength of the seat body and improving stability.
[0035] The bearing seat provided by the utility model has the advantages that, compared with the prior art, the bearing seat has the beneficial effects that:
[0036] The first bearing chamber 200 and the second bearing chamber 300 are respectively used for mounting the first bearing and the second bearing, the radially inner side protrusion of the inner seat body 130 can limit the first bearing in the first bearing chamber 200 and the second bearing in the second bearing chamber 300, prevent the first bearing and the second bearing from moving inward along the axial direction of the inner seat body 130 after being mounted, and play the positioning and axial limiting roles on the first bearing and the second bearing, the two ends of the metal bushing 500 are respectively embedded in the two ends of the outer seat body 100, the metal bushing 500 is avoided from falling off from the outer seat body 100 through the embedding, the outer seat body 100 and the inner seat body 130 are made of the BMC material, so that the weight of the outer seat body 100 and the inner seat body 130 is light, the bearing seat is lightened, the BMC material is cheaper than cast aluminum and other metals, the manufacturing cost of the bearing seat is reduced, the metal bushing 500 can be precisely machined on the inner cavity surface through the turning mode, so as to meet the high precision requirement of bearing cooperation, thereby ensuring the high machining precision of the inner cavity, the outer seat body 100 and the inner seat body 130 are integrally formed on the outer periphery and the inner side of the metal bushing 500 through the BMC material casting, the whole bearing seat is integrated, the machining precision of the bearing seat inner cavity in bearing cooperation is ensured under the conditions of reducing the weight and the manufacturing cost of the bearing seat.
[0037] The above only describes the preferred embodiments of the utility model, and it should be noted that, for the ordinary skilled in the technical field, several improvements and replacements can be made without departing from the technical principles of the utility model, and these improvements and replacements should also be considered as the protection scope of the utility model.
Claims
1. A bearing housing, characterized in that, Includes metal bushing, outer seat, and inner seat. The outer seat is cast from BMC material onto the outer periphery of the metal bushing; The inner seat is cast from BMC material onto the inner circumference of the metal bushing; The inner seat body divides the inner cavity of the metal bushing into a first bearing chamber at one end and a second bearing chamber at the other end.
2. The bearing housing according to claim 1, characterized in that, The metal bushing has a connecting hole that allows the outer seat and the inner seat to be cast and connected as one piece.
3. The bearing housing according to claim 2, characterized in that, The metal bushing has a first positioning bend and a second positioning bend at its two ends, respectively. The first positioning bend is embedded in one end of the outer seat, and the second positioning bend is embedded in the other end of the outer seat.
4. The bearing housing according to any one of claims 1 to 3, characterized in that, The first bearing chamber includes an oil seal and a bearing. The oil seal is located at one end near the outer side, and the bearing is located near the inner seat. The inner diameter of the bearing is smaller than the inner diameter of the oil seal, so that the connection between the bearing and the oil seal forms a stepped structure.
5. The bearing housing according to any one of claims 1 to 3, characterized in that, The outer seat body has a positioning protrusion along its circumferential direction near the outer side of the first bearing chamber.
6. The bearing housing according to any one of claims 1 to 3, characterized in that, The outer surface of the outer base is provided with reinforcing ribs along the circumferential direction.
7. The bearing housing according to any one of claims 1 to 3, characterized in that, The inner wall of the inner seat is inclined outward from the middle to both ends.