CN201369628Y - Stator set with plastic coating and bearing integrated structure - Google Patents

Abstract

The utility model discloses a stator group of utensil plastics coating and bearing integral structure. The stator assembly comprises a coil assembly, a metal bracket part, a plastic coating layer, a rotor accommodating hole and a bearing, wherein the bearing is arranged at the corresponding position of at least one end of the rotor accommodating hole. Therefore, the plastic coating layer and the bearing are integrated, the combination precision of the stator component can be greatly improved, and the practical progress of improving the operation efficiency and prolonging the service life is achieved.

Description

Stator group with integral structure of plastic coating layer and bearing

technical field

The utility model relates to a stator structure, in particular to an innovative type design with an integrated connection structure between the plastic coating layer and the bearing.

Background technique

The composition of the motor is mainly composed of a casing, a stator set, a rotor, and a bearing between the stator set and the rotor. The assembly of these components, as the size of the motor becomes smaller, The degree of difficulty is relatively higher.

Please refer to Figure 1 for the combination structure of the existing motor housing, stator group, rotor and bearings. Two sets of bearings 10 arranged at axial intervals are embedded in the front and rear end walls 21 of the housing 20 respectively. The perforations 210 and 220 provided in .

Since the front and rear end walls 21, 22 of the motor housing 20 are formed in combination, there is a fit tolerance therebetween, and the bearing 10 and the front and rear end walls 21, 22 of the housing 20 are provided The perforations 210, 220 are also combined (the part shown in B in FIG. 1 is the combined part), so another fit tolerance will be generated, and the shaft center 31 of the rotor 30 and the two bearings 10 are The pivot group state, so another fit tolerance is produced. The combination state of so many fit tolerances obviously makes it difficult for the overall motor combination accuracy to meet the required standard. Furthermore, the accuracy of the motor combination state is the most important for the rotor 30 The flatness between the shaft center 31 and the axial inner wall 41 of the stator group 40, however, the combination of the aforementioned existing motor structures may easily lead to the deviation of the rotor 30 shaft center 31 and the loss of precision between the rotor 30 shaft center 40 and the stator group 40. Defects in the alignment relationship will affect the operating performance and service life of the finished motor.

Therefore, in view of the above-mentioned problems existing in the existing motor structure, how to develop a more ideal and practical innovative structure is the goal and direction for the relevant industry to strive for research and development breakthroughs.

Utility model content

In order to overcome the above-mentioned defects, the main purpose of this utility model is to provide a stator group with an integrated structure of plastic coating layer and bearing. In view of the combination type of the existing motor stator structure, the axis of the rotor is easily deflected and the difference between the stator group and the Improve and break through the problem of loss of accurate alignment relationship between time and time, which affects the operation performance and service life of the finished motor.

In order to achieve the above purpose, the utility model has a stator group with an integrated structure of a plastic coating layer and a bearing. The stator group includes a coil group, a metal bracket part, a plastic coating layer, a rotor accommodation hole and a bearing. Corresponding to at least one end of the rotor accommodating hole; the plastic covering layer at the end of the rotor accommodating hole is integrally extended inward to form a plastic connecting part, and the inwardly extending end of the plastic connecting part is connected and fixed to the bearing It is in an integrated form, forming a structural form in which the plastic covering layer and the bearing are integrated.

The technical feature of the utility model to solve the problem is mainly that the plastic coating layer at least one end of the rotor accommodation hole is integrally extended inward to form a plastic connecting part, and the inwardly extending end of the plastic connecting part is connected and fixed with the bearing. It is in an integrated form; in this way, the stator group and the bearing are integrated to innovate and unique structural design, so that the utility model can greatly improve the combination accuracy of the stator components compared with the existing technology, and achieve the practical progress of improving the operation efficiency and service life .

Description of drawings

Fig. 1 is the assembled sectional view of existing structure.

Fig. 2 is a combined sectional view of a preferred embodiment of the structure of the utility model.

Fig. 3 is an exploded cross-sectional view of partial components of a preferred embodiment of the structure of the utility model.

FIG. 4 is a partially enlarged view of FIG. 2 .

Fig. 5 is a diagram of another embodiment of the connecting part of the plastic connecting part of the bearing of the present invention.

Fig. 6 is another embodiment diagram of the connecting part of the plastic connecting part of the bearing of the present invention.

Fig. 7 is a perspective view of the bearing of the structure shown in Fig. 6 .

Fig. 8 is a diagram of another embodiment of the structure of the motor of the present invention.

FIG. 9 is an exploded perspective view of another embodiment of the structure of the motor stator assembly of the present invention.

Fig. 10 is a combined cross-sectional view of another embodiment of the structure of the motor stator assembly of the present invention.

Detailed ways

Below in conjunction with accompanying drawing, the specific embodiment of the present utility model is described in further detail.

Please refer to Fig. 2, Fig. 3 and Fig. 4, the preferred embodiment of the stator group with integrated structure of plastic coating layer and bearing of the utility model, these embodiments are only for illustration purposes, and are not included in the patent application Not restricted by this structure. As shown in Fig. 2, it is a combined plan view of the implementation type of the stator group of the present invention applied in a motor structure, and the motor A includes the following components:

A housing 50, including a peripheral wall 51, an end wall 52 and an inner accommodation space 53;

A stator group 60 is assembled in the accommodating space 53 of the housing 50. The stator group 60 includes a coil group 61, a metal bracket part 62 and a plastic coating layer 63. The stator group 60 has a rotor housing in the center. A hole 64 is provided, and the rotor accommodating hole 64 is defined to form a first end 641 and a second end 642;

A bearing 71 is located at the position corresponding to the second end 642 of the rotor accommodating hole 64 of the stator assembly 60;

A second bearing 72 is assembled on the end wall 52 of the housing 50 and corresponds to the first end 641 of the rotor accommodating hole 64;

A plastic connecting part 80 is integrally extended inwardly from the plastic covering layer 63 of the second end 642 of the rotor accommodating hole 64, and the inwardly extending end 81 of the plastic connecting part 80 is connected and fixed with the bearing 71, and its The method of connection and fixation can be carried out by planning the injection molding mold, placing the bearing 71 into the mold for injection molding the plastic coating layer 63, and forming the plastic connecting part 80 together when the plastic coating layer 63 is injection molded. , and further combine the structure of the bearing 71 and the stator group 60 into one;

A rotor 90 includes an axis 91 and a magnetic ring 92. The magnetic ring 92 is accommodated in the rotor accommodating hole 64 of the stator assembly 60, and the two ends of the axis 91 are respectively pivoted on the bearing 71, The second bearing 72 .

Wherein, as shown in FIG. 2 , the housing 50 corresponds to the end of the bearing 71 and is assembled with an end plate 54 for fastening and limiting the stator assembly 60 , or as an assembly and positioning structure for the motor A.

Wherein, as shown in FIG. 4 , the portion of the bearing 71 where the inwardly extending end 81 of the plastic connecting portion 80 is connected and fixed may be provided with a step portion 711 to obtain a better fitting and fixing effect.

Wherein, as shown in FIG. 5 , the bearing 71 can also be provided with a convex portion 712 (such as an annular flange or a spaced rib) at the position where the inwardly extending end 81 of the plastic connecting portion 80 is connected and fixed, so as to obtain a relatively Good fit and fixation effect.

Wherein, as shown in Fig. 6 and Fig. 7, the position where the inwardly extending end 81 of the plastic connecting part 80 is connected and fixed by the bearing 71 can also be provided with a concave part 713 (such as an interval groove or an annular concave edge, etc.), for In order to obtain a better fit and fixation effect.

Through the above-mentioned structure and composition design, the core design of the present utility model mainly lies in that the plastic coating layer 63 of the second end 642 of the rotor accommodation hole 64 provided in the stator group 60 is more integrally extended inward to form the plastic connection part 80 Technical feature, with this design, the plastic connecting part 80 can be formed together when the plastic coating layer 63 is injection-molded, and the bearing 71 can be combined and fixed as a whole at the same time, forming the structural combination of the bearing 71 and the stator group 60. In this way, since the problem of combination tolerance can be avoided, the relative verticality and parallelism of the bearing 71 and the stator group 60 can reach the best precision state (compared to the combined In terms of structure), further speaking, after the rotor 90 is assembled, the parallelism between the rotor 90 and the rotor accommodating hole 64 of the stator assembly 60 can reach the most precise assembly state.

The motor A2 as shown in Figure 8 is another embodiment diagram of the overall form of the motor of the present invention. This figure discloses the structural form of a micro-motor, and the second end 642 of the rotor accommodation hole 64 The plastic covering layer 63 is integrally extended inwardly to form the plastic connecting portion 80 , and the features are the same as those of the previous embodiments, which will not be repeated here.

As for the motor A3 shown in Figure 9 and Figure 10, the stator group 60 of this embodiment is composed of a first stator group 601 and a second stator group 602 that are independently made, and the upper part of the figure is located at the top of the figure. The plastic coating layer 63 at the upper end of the rotor accommodation hole 64 of the first stator group 601 is integrally extended inwardly to form a plastic connecting part 80 to combine and fix the upper bearing 71B as a whole, while the second stator group 602 located at the bottom of the figure The plastic covering layer 63 at the lower end of the rotor accommodation hole 64 is also integrally extended inward to form a plastic connecting part 80 to combine and fix the lower bearing 71C as a whole, and the assembly of the motor A3 disclosed in this embodiment, its rotor 90B First sandwiched between the first stator group 601 and the second stator group 602, and then the first stator group 601 and the second stator group 602 are combined and positioned, and then the casing 50B is packaged, wherein The first stator group 601 and the second stator group 602 are combined with each other and have directional fitting edges 65 and 66 that can be engaged with each other to achieve directional positioning effect; with this two-piece combined structure design, it can be realized Both ends of the stator assembly 60 have a structure in which the plastic coating layer and the bearing are integrated.

The utility model has a stator group with an integrated structure of a plastic coating layer and a bearing. The plastic coating layer at one end of the rotor accommodation hole is mainly extended inward to form a plastic connection part. The inward extension end is connected to the bearing. The unique structural design of linking and fixing in an integrated form can provide a structural form in which the plastic coating layer and the bearing are integrated, so that the utility model can be compared with the existing structure mentioned in the background technology through the planning of the mold , during the injection molding process of the plastic coating layer of the stator group, the bearing is integrally connected and fixed simultaneously, so that the alignment relationship between the bearing and the stator group can achieve the best and precise state, and there is no problem of combination tolerance , can greatly improve the combination accuracy of the stator components, and achieve the practical progress of improving the operational efficiency and service life.

Above-mentioned embodiment is in order to illustrate the utility model in detail, although the text is explained by specific term, but can not limit the scope of patent of the utility model of the utility model with this; Afterwards, it is changed and modified to achieve equivalent purposes, and these changes and modifications should all be covered in the scope defined by the claims.

Claims (6)

1. A stator group with an integrated structure of a plastic coating layer and a bearing, the stator group includes a coil group, a metal bracket part, a plastic coating layer, a rotor accommodation hole and a bearing, and the bearing is located in the rotor housing At least one end of the hole is located at a corresponding position; the feature is that: the plastic covering layer at the end of the rotor accommodation hole extends inward integrally to form a plastic connecting part, and the inwardly extending end of the plastic connecting part is connected and fixed with the bearing It is in an integrated form, forming a structural form in which the plastic covering layer and the bearing are integrated. 2. According to claim 1, the stator assembly with an integrated structure of plastic coating layer and bearing is characterized in that: the part of the bearing where the plastic connecting part is connected and fixed is provided with a step part. 3. The stator assembly with an integrated structure of plastic coating layer and bearing according to claim 1, characterized in that: the part of the bearing where the plastic connecting part is connected and fixed is provided with a concave part or a convex part. 4. According to claim 1, the stator group with an integrated structure of plastic coating layer and bearing is characterized in that: the stator group is combined with a casing, a rotor and a second bearing to form a motor; the stator The group is arranged in an accommodating space inside the casing, the second bearing group is arranged on one end wall of the casing, the bearing of the stator group corresponds to the other end wall of the casing, and the rotor includes an axis And a magnetic ring, the magnetic ring is accommodated in the rotor accommodating hole of the stator group, and the two ends of the shaft are respectively pivoted on the bearing and the second bearing. 5. The stator group with an integrated structure of plastic coating layer and bearing according to claim 4, characterized in that: the housing is provided with an end plate corresponding to the end group of the bearing to fasten and limit the stator group. 6. According to claim 1, the stator group with an integrated structure of plastic coating layer and bearing is characterized in that: the stator group is composed of a first stator group and a second stator group which are independently made. In this configuration, the plastic coating layer at the opposite outer end of the rotor accommodation hole of the first and second stator groups uniformly extends inward to form a plastic connecting part to combine and fix the bearings as a whole.

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