阅读说明：本技术 一种低成本的步进电机 (Low-cost stepping motor ) 是由 李相银 厉乐平 官可旭 于 2020-12-31 设计创作，主要内容包括：本申请公开了一种低成本的步进电机,包括转子组件,爪极板,套设置于所述爪极板一端的第一线架,套设于所述爪极板另一端的第二线架,套设于所述第一线架外的第一机壳,以及套设于所述第二线架外的第二机壳,所述第一机壳和所述第二机壳相抵接；所述第一线架包括一体设置的第一线架本体和第一轴孔,所述第一轴孔设置在所述第一线架本体远离所述第二线架的端面上；所述第二线架包括一体设置的第二线架本体和第二轴孔,所述第二轴孔设置在所述第二线架本体远离所述第一线架的端面上。本发明将轴孔和线架一体设置,以线架实现前后端和轴承的作用,通过线架端面上的环形槽口与机壳齿形相适配组装,结构简单,组装快捷。(The application discloses a low-cost stepping motor, which comprises a rotor assembly, a claw pole plate, a first wire frame sleeved at one end of the claw pole plate, a second wire frame sleeved at the other end of the claw pole plate, a first machine shell sleeved outside the first wire frame, and a second machine shell sleeved outside the second wire frame, wherein the first machine shell is abutted to the second machine shell; the first bobbin comprises a first bobbin body and a first shaft hole which are integrally arranged, and the first shaft hole is formed in the end face, far away from the second bobbin, of the first bobbin body; the second bobbin comprises a second bobbin body and a second shaft hole which are integrally arranged, and the second shaft hole is formed in the end face, far away from the first bobbin, of the second bobbin body. The axle hole and the wire frame are integrally arranged, the wire frame realizes the functions of the front end, the rear end and the bearing, and the gear is matched and assembled with the gear shape of the shell through the annular notch on the end surface of the wire frame, so the structure is simple and the assembly is rapid.)

1. A low-cost stepping motor is characterized by comprising a rotor assembly, a claw pole plate, a first wire frame sleeved at one end of the claw pole plate, a second wire frame sleeved at the other end of the claw pole plate, a first machine shell sleeved outside the first wire frame, and a second machine shell sleeved outside the second wire frame, wherein the first machine shell is abutted with the second machine shell; one end of the rotor component is fixedly sleeved at the geometric center of the first wire frame, and the other end of the rotor component is fixedly sleeved at the geometric center of the second wire frame; the first bobbin comprises a first bobbin body and a first shaft hole which are integrally arranged, and the first shaft hole is formed in the end face, far away from the second bobbin, of the first bobbin body; the second bobbin comprises a second bobbin body and a second shaft hole which are integrally arranged, and the second shaft hole is formed in the end face, far away from the first bobbin, of the second bobbin body.

2. The low-cost stepping motor according to claim 1, wherein a first annular notch is provided on an end surface of the first bobbin body away from the second bobbin, and the first shaft hole is provided at a geometric center of the first annular notch; the end face, far away from the first wire rack, of the second wire rack body is provided with a second annular notch, and the second shaft hole is formed in the geometric center of the second annular notch.

3. The low-cost stepping motor according to claim 2, wherein the first annular notch comprises a first ring body and a plurality of first tooth-shaped portions, the first tooth-shaped portions are integrally formed, the first tooth-shaped portions extend horizontally outward from the outer periphery of the first ring body, and the plurality of first tooth-shaped portions are uniformly distributed on the outer periphery of the first ring body; the second annular notch comprises a second ring body and a plurality of second tooth-shaped parts which are integrally arranged, the second tooth-shaped parts extend outwards from the periphery of the second ring body horizontally, and the second tooth-shaped parts are uniformly distributed on the periphery of the second ring body.

4. The low cost stepper motor of claim 3, wherein the first axial bore extends vertically from an inner periphery of the first ring in a direction away from the first bobbin body; the second shaft hole is vertically extended from the inner periphery of the second ring body in the direction far away from the second bobbin body.

5. The low-cost stepping motor according to claim 1, wherein a side of the first bobbin body adjacent to an end surface of the second bobbin body is provided with a first positioning boss portion; a second positioning boss part is arranged on one side, close to the end face of the first bobbin body, of the second bobbin body; PIN pinholes are arranged on the first positioning boss part and the second positioning boss part.

6. The low-cost stepping motor according to claim 5, wherein said first positioning boss portion and said second positioning boss portion are juxtaposed, and said first positioning boss portion abuts against said second positioning boss portion.

7. The low-cost stepping motor according to claim 2, wherein the inner diameter portion of the first housing is circumferentially provided with first housing teeth which are uniformly distributed, and the first housing teeth are matched with the first annular notch; and the inner diameter part of the second shell is circumferentially provided with second shell tooth profiles which are uniformly distributed, and the second shell tooth profiles are matched with the second annular notch.

8. The low cost stepper motor of claim 8, wherein the claw-pole plate comprises two claw-pole plate monomers arranged back-to-back.

9. The low cost stepper motor of claim 1, wherein the rotor assembly includes a shaft and a rotor body connected to the shaft; one end of the rotating shaft is fixedly sleeved in the central shaft hole of the first wire frame, and the other end of the rotating shaft is fixedly sleeved in the central shaft hole of the second wire frame.

Technical Field

The invention belongs to the technical field of stepping motors, and particularly relates to a low-cost stepping motor. This step motor's shaft hole and integrative setting of line frame to the shaft hole replaces the effect that the bearing realized the bearing, through the breach cooperation equipment of annular notch on the line frame terminal surface with the casing, has removed front and back end cover and bearing part from, assembles simple swiftly, and the cost is lower, does benefit to the popularization.

Background

The stepping motor is a control motor for converting an electric pulse signal into angular displacement or linear displacement, and is widely applied to various automatic control systems. With the development of computers and microelectronic technology, the demand of stepping motors is increasing and is applied in various fields of national economy.

The traditional stepping motor has more parts and is more complex to assemble. At present, a traditional stepping motor is generally assembled in a mode of combining a front end cover, a shell and a front end cover bearing, and combining a rear end cover, the shell and a rear end cover bearing into a motor structure. Because the front end cover and the rear end cover are different in shape and the front end cover bearing and the rear end cover bearing are different in structure, the structure for producing the corresponding parts can be realized only by developing different dies, the cost is high, the assembly of the motor is complex, and the popularization is not facilitated.

Disclosure of Invention

Based on this, it is necessary to provide a low-cost step motor to the not enough that prior art exists, and this step motor's shaft hole and line frame are integrative to the shaft hole replaces the effect that the bearing realized the bearing, through the equipment of annular notch and casing tooth-shaped cooperation on the wire frame terminal surface, has removed front and back end cover and bearing part, and the equipment is simple swift, and the cost is lower, does benefit to the popularization.

In order to achieve the purpose, the invention provides the following technical scheme:

a low-cost stepping motor comprises a rotor assembly, a claw pole plate, a first wire frame sleeved at one end of the claw pole plate, a second wire frame sleeved at the other end of the claw pole plate, a first machine shell sleeved outside the first wire frame, and a second machine shell sleeved outside the second wire frame, wherein the first machine shell is abutted to the second machine shell; one end of the rotor component is fixedly sleeved at the geometric center of the first wire frame, and the other end of the rotor component is fixedly sleeved at the geometric center of the second wire frame; the first bobbin comprises a first bobbin body and a first shaft hole which are integrally arranged, and the first shaft hole is formed in the end face, far away from the second bobbin, of the first bobbin body; the second bobbin comprises a second bobbin body and a second shaft hole which are integrally arranged, and the second shaft hole is formed in the end face, far away from the first bobbin, of the second bobbin body.

Optionally, an end surface of the first bobbin body, which is far away from the second bobbin, is provided with a first annular notch, and the first shaft hole is arranged at a geometric center of the first annular notch; the end face, far away from the first wire rack, of the second wire rack body is provided with a second annular notch, and the second shaft hole is formed in the geometric center of the second annular notch.

Optionally, the first annular notch includes a first ring body and a plurality of first tooth-shaped portions, the first tooth-shaped portions extend horizontally outward from the periphery of the first ring body, and the plurality of first tooth-shaped portions are uniformly distributed on the periphery of the first ring body; the second annular notch comprises a second ring body and a plurality of second tooth-shaped parts which are integrally arranged, the second tooth-shaped parts extend outwards from the periphery of the second ring body horizontally, and the second tooth-shaped parts are uniformly distributed on the periphery of the second ring body.

Optionally, the first shaft hole extends vertically from the inner periphery of the first ring body in a direction away from the first bobbin body; the second shaft hole extends vertically from the inner periphery of the second ring body in a direction away from the second bobbin body.

Optionally, a first positioning boss portion is arranged on one side of the first bobbin body, which is close to the end face of the second bobbin body; a second positioning boss part is arranged on one side, close to the end face of the first bobbin body, of the second bobbin body; PIN pinholes are arranged on the first positioning boss part and the second positioning boss part.

Optionally, the first positioning boss portion and the second positioning boss portion are arranged in parallel, and the first positioning boss portion is abutted to the second positioning boss portion.

Optionally, the inner diameter portion of the first casing is circumferentially provided with first casing tooth profiles which are uniformly distributed, and the first casing tooth profiles are matched with the first annular notch; and the inner diameter part of the second shell is circumferentially provided with second shell tooth profiles which are uniformly distributed, and the second shell tooth profiles are matched with the second annular notch. The corresponding machine shell is sleeved and fixed on the corresponding wire frame through the matching of the corresponding machine shell tooth form and the corresponding annular notch.

Optionally, the claw pole plate includes two claw pole plate single bodies arranged back to back.

Optionally, the rotor assembly includes a rotating shaft and a rotor body connected to the rotating shaft; one end of the rotating shaft is fixedly sleeved in the central shaft hole of the first wire frame, and the other end of the rotating shaft is fixedly sleeved in the central shaft hole of the second wire frame.

The axle hole and the wire frame are integrally arranged, the axle hole replaces a bearing to realize the action of the bearing, namely, the wire frame replaces the front end cover, the rear end cover and the bearing to realize the action of the front end cover, the rear end cover and the bearing, and the parts of the front end cover, the front end cover bearing, the rear end cover and the rear end cover bearing are reduced by the matching assembly of the annular notch on the end surface of the wire frame and the tooth shape of the shell, so that the assembly of the front end cover, the rear end cover and the corresponding bearing is avoided, the structure; the wire frame is made of high-temperature wear-resistant injection molding materials, so that the cost is low, and the popularization is facilitated.

Drawings

FIG. 1 is a schematic structural diagram of a low-cost stepping motor according to an embodiment of the present invention;

FIG. 2 is an exploded view of the low cost stepper motor of FIG. 1;

fig. 3 is a schematic structural diagram of a first bobbin of the low-cost stepping motor shown in fig. 1.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that, if directional indications (such as up, down, left, right, front, back, top and bottom … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

At present, a traditional stepping motor is generally assembled in a mode of combining a front end cover, a shell and a front end cover bearing, and a mode of combining a rear end cover, a shell and a rear end cover bearing, and then the traditional stepping motor is combined with a stator to form a motor structure comprising the front end cover bearing, the rear end cover bearing, a front end cover, a rear end cover and a coil holder. Because the structures of the front end cover and the rear end cover are different, and the structures of the front end cover bearing and the rear end cover bearing are different, the structure for producing the corresponding parts can be realized only by developing different dies, more parts and components are needed, the cost is higher, and the assembly of the motor is more complicated and is not beneficial to popularization. Based on this, it is necessary to provide a low-cost stepping motor to solve the above technical problems.

Referring to fig. 1 and fig. 2, a low-cost stepping motor according to an embodiment of the present invention includes a rotor assembly 10, a claw pole plate 20, a first bobbin 30 sleeved on one end of the claw pole plate 20, a second bobbin 40 sleeved on the other end of the claw pole plate 20, a first casing 50 sleeved outside the first bobbin 30, and a second casing 60 sleeved outside the second bobbin 40, wherein the first casing 50 is abutted against the second casing 60; one end of the rotor assembly 10 is fixed at the geometric center of the first bobbin 30 in a penetrating way, and the other end of the rotor assembly is fixed at the geometric center of the second bobbin 40 in a penetrating way; the first bobbin 30 comprises a first bobbin body 31 and a first shaft hole 32 which are integrally arranged, and the first shaft hole 32 is arranged on the end surface of the first bobbin body 31 far away from the second bobbin 40; the second bobbin 40 includes a second bobbin body 41 and a second shaft hole 42 that are integrally provided, and the second shaft hole 42 is provided on an end surface of the second bobbin body 41 that is away from the first bobbin 30.

Optionally, a first annular notch 33 is formed in an end surface of the first bobbin body 31 away from the second bobbin 40, and the first shaft hole 32 is formed in a geometric center of the first annular notch 33; a second annular notch 43 is provided on an end surface of the second bobbin body 41 away from the first bobbin 30, and the second shaft hole 42 is provided at a geometric center of the second annular notch 43.

For example, as shown in fig. 3, the first annular notch 33 includes a first ring 331 and a plurality of first tooth-shaped portions 332, which are integrally formed, the first tooth-shaped portions 332 extend outward from the outer periphery of the first ring 331, and the plurality of first tooth-shaped portions 332 are uniformly distributed on the outer periphery of the first ring 331; the second annular notch 43 includes a second ring body (not shown) and a plurality of second tooth-shaped portions (not shown) that are integrally disposed, the second tooth-shaped portions extend outward from the outer periphery of the second ring body, and the second tooth-shaped portions are uniformly distributed on the outer periphery of the second ring body.

Optionally, the first shaft hole 32 extends vertically from the inner periphery of the first ring 331 in a direction away from the first bobbin body 31; the second shaft hole 42 extends vertically from the inner periphery of the second ring body in a direction away from the second bobbin body 41.

Optionally, a first positioning boss portion 34 is disposed on one side of the first bobbin body 31 close to the end face of the second bobbin body 41; a second positioning boss portion 44 is provided on a side of the second bobbin body 41 close to the end face of the first bobbin body 31; the first positioning boss portion 34 and the second positioning boss portion 44 are each provided with a PIN hole (not identified in the figure) provided with a PIN 70.

Alternatively, the first positioning boss portion 34 and the second positioning boss portion 44 are arranged in parallel, and the first positioning boss portion 34 abuts against the second positioning boss portion 44.

Specifically, in the present embodiment, the first housing 50 and the second housing 60 have the same structure. It is understood that in other embodiments, the first housing 50 and the second housing 60 may have different structures as long as the structures can realize the present application. Optionally, the inner diameter of the first housing 50 is circumferentially provided with first housing teeth 51 which are uniformly distributed, and the first housing teeth 51 are adapted to the first annular notch 33; the inner diameter of the second casing 60 is circumferentially provided with a second casing tooth profile (not shown) which is uniformly distributed, and the second casing tooth profile is matched with the second annular notch 43. The corresponding machine shell is sleeved and fixed on the corresponding wire frame through the matching of the corresponding machine shell tooth form and the corresponding annular notch.

Specifically, in the present embodiment, the first bobbin 30 and the second bobbin 40 have the same structure. It is understood that in other embodiments, the first and second bobbins 30 and 40 may have different structures as long as the structures can realize the present application.

Optionally, the rotor assembly 10 includes a motor shaft 11 and a rotor body 12 disposed on the motor shaft 11;

optionally, the claw pole plate 20 includes two claw pole plate units arranged back to back.

Optionally, the rotor assembly 10 includes a rotating shaft 11 and a rotor body 12 connected to the rotating shaft 11; one end of the rotating shaft 11 is fixed in the central shaft hole of the first bobbin 30 in a penetrating manner, and the other end is fixed in the central shaft hole of the second bobbin 40 in a penetrating manner.

The axle hole and the wire frame are integrally arranged, the axle hole replaces a bearing to realize the action of the bearing, namely, the wire frame replaces the front end cover, the rear end cover and the bearing to realize the action of the front end cover, the rear end cover and the bearing, and the parts of the front end cover, the front end cover bearing, the rear end cover and the rear end cover bearing are reduced by the matching assembly of the annular notch on the end surface of the wire frame and the tooth shape of the shell, so that the assembly of the front end cover, the rear end cover and the corresponding bearing is avoided, the structure; the wire frame is made of high-temperature wear-resistant injection molding materials, so that the cost is low, and the popularization is facilitated.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features. The above examples only show some embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.