Motor Assembly

Abstract

The present invention provides a motor assembly that can reduce the transmission of vibrations into the motor. [Solution] The motor assembly MA includes a case 1 having a housing groove 11 and a position limiting groove 12 that communicate with each other, a motor body 2 provided within the housing groove, an output shaft 3 connected to the output end of the motor body, penetrating to the outside of the case and connected to an external load, and a bearing 4, wherein the output shaft penetrates the bearing and the bearing is located within the limiting groove. As a result, the limiting groove can perform a limiting effect on the bearing, and if the load is subjected to vibration or impact such as dropping, the vibration is transmitted to the output shaft and the bearing.

Description

Technical Field

[0001] The present invention relates to the technical field of motors, and particularly to motor assemblies.

Background Art

[0002] In the applications of micro reduction motors and small reduction motors, when the output shaft is not fixed separately and is only connected to a floating load in the air, if the load is subjected to impacts such as vibration or dropping, its kinetic energy will be directly transmitted into the motor through the output shaft. Thus, internal components of the motor, such as gears, may be damaged, which may affect the gear meshing, and ultimately the function of the motor may be impaired and it may malfunction.

Summary of the Invention

Problems to be Solved by the Invention

[0003] The present invention is made in view of the above conventional situation, and the present application provides a motor assembly capable of reducing the transmission of vibration into the motor.

Means for Solving the Problems

[0004] The motor assembly according to the present invention includes a case in which accommodation grooves and limiting grooves communicating with each other are formed, a motor body provided in the accommodation groove and having an output end facing the direction of the limiting groove, an output shaft connected to the output end of the motor body, penetrating to the outside of the case, and connected to an external load, and a bearing, wherein the output shaft penetrates through the bearing, the bearing is located in the limiting groove, and the inner contour of the limiting groove matches the outer contour of the bearing. Preferably, a first convex portion is provided on the circumferential side of the bearing, the first convex portion is located in the limiting groove, and the outer contour of the first convex portion matches the inner contour of the limiting groove. Preferably, a second convex portion is provided on the circumferential side of the output shaft and is located between the first convex portion and the motor body. Preferably, an insertion hole is provided at the output end of the motor body, and the output shaft is inserted into the insertion hole. Preferably, the case includes a first case and a second case that are detachably connected. Preferably, the first case and the second case are engaged or screwed together. Preferably, the bearing includes one of the following: a self-lubricating bearing, an oil-impregnated bearing, and a ball bearing. Preferably, the output shaft is bonded or screwed to an external load. [Effects of the Invention]

[0005] The motor assembly according to this invention includes a case, a motor body, an output shaft, and a bearing. The case has a housing groove and a limiting groove that communicate with each other. The motor body is provided in the housing groove, with its output end facing the limiting groove. The output shaft is connected to the output end of the motor body, penetrates to the outside of the case, and is connected to an external load. The output shaft penetrates the bearing, which is located in the limiting groove, and the inner contour of the limiting groove matches the outer contour of the bearing. As a result, the limiting groove can perform a limiting action on the bearing, and when the load is subjected to vibration or impact such as dropping, the vibration is transmitted to the output shaft and bearing. When the vibrating bearing contacts the inner wall of the limiting groove, the bearing and case absorb the vibration, reducing further transmission of vibration into the motor body, thereby improving the stability and durability of the motor body. In addition, by providing a limiting groove, the load will not sway axially when subjected to external impact, thereby improving the overall stability of the structure. [Brief explanation of the drawing]

[0006] To more clearly explain the embodiments of this application, a brief introduction is provided below using the necessary drawings for describing the embodiments. Naturally, the drawings described below are merely examples of embodiments of this application, and those skilled in the art can conceive of other drawings based on these without requiring any creative effort. To fully understand the present invention and its beneficial effects, the following explanation will be given with reference to the drawings, and in the following explanation, the same reference numerals refer to the same parts. [Figure 1] This is a schematic diagram showing the overall configuration of the motor assembly relating to the present invention. [Figure 2] This is a cross-sectional view showing the case of the motor assembly according to the present invention. [Figure 3] This is an exploded view showing the motor assembly relating to the present invention. [Figure 4] This is a cross-sectional view showing the motor assembly relating to the present invention. [Figure 5] This is a partial structural diagram showing the motor assembly relating to the present invention. [Modes for carrying out the invention]

[0007] Preferred embodiments of the present application will be described in detail below with reference to the drawings. In the following description, the same reference numerals are used for the same components, and redundant descriptions are omitted. Also, the drawings are only schematic, and the dimensional ratios between components or the shapes of the components may differ from those of actual components. Furthermore, all directional indications in the embodiments of the present application (e.g., up, down, left, right, front, back, etc.) merely interpret the relative positional relationships and movement patterns between components in a particular orientation, and if that particular orientation changes, the directional indications will also change accordingly. Furthermore, when it is stated that one element (component) is "fixed" or "provided" to another element (component), it may be directly located to the other element, or an intervening element may be present at the same time. When it is stated that one element is "connected" to another element, it may be directly connected to the other element, or an intervening element may be present at the same time.

[0008] As shown in Figures 1 to 4, the motor assembly MA according to the present invention includes a case 1, a motor body 2, an output shaft 3, and a bearing 4. The case 1 has a housing groove 11 and a limiting groove 12 that communicate with each other. The motor body 2 is provided in the housing groove 11, with its output end facing the direction of the limiting groove 12. The output shaft 3 is connected to the output end of the motor body 2, penetrates to the outside of the case 1, and is connected to an external load 100. The output shaft 3 passes through the bearing 4, which is located in the limiting groove 12, and the inner contour of the limiting groove 12 matches the outer contour of the bearing 4. According to the above structure, in the motor assembly MA of this application, the limiting groove 12 can perform a limiting effect on the bearing 4, and when the load 100 is subjected to vibration or impact such as dropping, the vibration is transmitted to the output shaft 3 and the bearing 4. When the vibrating bearing 4 comes into contact with the inner wall of the limiting groove 12, the bearing 4 and the case 1 absorb the vibration, reducing further transmission of vibration into the motor body 2, thereby improving the stability and durability of the motor body 2. In addition, by providing the limiting groove 12, the load 100 will not sway in the axial direction when subjected to external impact, thereby improving the overall stability of the structure.

[0009] As shown in Figure 5, in some embodiments, a flange-shaped first protrusion 41 is provided on the circumferential side of the bearing 4, the first protrusion 41 is located (fitted) within the restricting groove 12, and the outer contour of the first protrusion 41 matches the inner contour of the restricting groove 12. As a result, the restricting groove 12 can exert a sufficient restricting effect on the first protrusion 41 and limit the movement of the first protrusion 41. Specifically, there is a gap between the first protrusion 41 and the inner wall of the restricting groove 12, and they do not make complete contact. As shown in Figures 4 and 5, in some embodiments, a second protrusion 42 is provided on the circumferential side of the output shaft 3, located between the first protrusion 41 and the motor body 2. As a result, the first protrusion 41 acts as a limiting force on the second protrusion 42, restricting the axial movement of the output shaft 3 and preventing the output shaft 3 from detaching from the motor body 2.

[0010] As shown in Figure 3, in some embodiments, an insertion hole 21 is provided at the output end of the motor body 2, and the output shaft 3 is inserted into the insertion hole 21. Specifically, the output shaft 3 is an externally mounted output shaft 3, and when installed, it only needs to be directly inserted into the insertion hole 21. Through the cooperation of the first protrusion 41 and the second protrusion 42, the output shaft 3 cannot detach from the insertion hole 21 during operation, and there may be a certain gap between the output shaft 3 and the insertion hole 21. As a result, when the external load 100 is subjected to vibration, the externally mounted output shaft 3 can reduce the direct impact on the motor body 2, and since the bearing 4 receives most of the vibration, the vibration received by the motor body 2 is extremely small.

[0011] In some embodiments, case 1 includes a first case 13 and a second case 14 that are detachably connected. This allows case 1 to be quickly opened for inspection and replacement if the motor assembly MA is subjected to vibration or impact such as a drop and its internal components are damaged, significantly reducing maintenance time and costs. In some embodiments, the first case 13 and the second case 14 are engaged or screwed together. The first case 13 may be provided with an engagement block, and the second case 14 may be provided with an engagement groove, and the first case 13 and the second case 14 can be connected by engagement between the engagement block and the engagement groove. The engagement connection method facilitates subsequent disassembly and repair, allowing the user to quickly open case 1 to inspect and replace internal components, thereby improving maintenance efficiency. Alternatively, the first case 13 and the second case 14 may be screwed together, and the screwing method provides higher connection strength and sealing performance, making the connection between the first case 13 and the second case 14 more robust and effectively preventing loosening of case 1 due to vibration or shock. In some embodiments, the bearing 4 includes one of the following: a maintenance-free bearing 4, an oil-impregnated bearing 4, and a ball bearing 4. Specifically, the user can select the type of bearing 4 as needed. Specifically, a maintenance-free bearing 4 can be selected, which has the advantages of low cost, high precision, and a long service life. Various shapes can be assumed for the external load 100, but in the illustrated example, it is roughly T-shaped in plan view, with an insertion hole 102 formed through the end of the protruding part for inserting the end of the output shaft 3. In some embodiments, the output shaft 3 is bonded or screwed into the insertion hole 102 of the external load 100 while it is inserted therein. This further improves the stability of the connection between the output shaft 3 and the external load 100. In some embodiments, a reduction box 22 is further provided on one side of the motor body 2, the insertion hole 21 is provided at the output end of the reduction box 22, and the output shaft 3 is inserted into the output end.

[0012] Specifically, in the process of installing the motor assembly MA according to the present invention, first, the output shaft 3 is inserted into the inner ring (center hole 4a) of the bearing 4, then the end of the output shaft 3 is inserted into the insertion hole 102 of the external load 100, and the other end of the output shaft 3, away from the external load 100, is inserted into the insertion hole 21 of the reduction box 22. Then, the first case 13 and the second case 14 are installed so that the motor body 2, the reduction box 22, and the bearing 4 are housed inside the first case 13 and the second case 14.

[0013] As described above, in the motor assembly MA according to the present invention, the limiting groove 12 can perform a limiting effect on the bearing 4, and when the load 100 is subjected to vibration or impact such as dropping, the vibration is transmitted to the output shaft 3 and the bearing 4. When the vibrating bearing 4 comes into contact with the inner wall of the limiting groove 12, the bearing 4 and the case 1 absorb the vibration, reducing further transmission of vibration into the motor body 2, thereby improving the stability and durability of the motor body 2. In addition, by providing the limiting groove 12, the load 100 will not sway in the axial direction when subjected to external impact, thereby improving the overall stability of the structure. In the description of this application, terms such as "first" and "second" are for the purpose of description only and should not be understood as indicating or suggesting relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" may explicitly or implicitly include one or more features. In the description of this application, unless there are specific and clear limitations, "plurality" means two or more. In the above embodiments, each embodiment has its own focus. For parts not described in detail in a certain embodiment, reference may be made to the relevant descriptions of other embodiments. The embodiments, forms of implementation and related technical features of this application can be combined and replaced with each other when they are not contradictory.

[0014] The above are only preferred embodiments of this application and do not limit this application in any way. As long as it does not depart from the technical means of this application, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of this application all belong to the scope of the technical means of this application. The present invention has been specifically described above with reference to the drawings and embodiments, but the above description does not limit the present invention in any way. Those skilled in the art can make deformations and changes to the present invention as needed without departing from the spirit and scope of the present invention, and these deformations and changes are all included within the scope of the present invention.

Description of Reference Signs

[0015] MA Motor Assembly 1 Case 11 Receiving Groove 12 Limiting Groove 13 First Case 14 Second Case 2 Motor Body 21 Insertion Hole 22 Reduction Box 3 Output Shaft 42 Second Convex Portion 4 Bearing 41 First Convex Portion 100 Load

Claims

1. A case having interconnected accommodating grooves and restricting grooves, A motor body is provided within the aforementioned housing groove, with its output terminal facing the direction of the aforementioned limiting groove, An output shaft connected to the output terminal of the motor body, extending through to the outside of the case and connected to an external load, Includes bearings, A motor assembly characterized in that the output shaft penetrates a bearing, the bearing is located within the limiting groove, and the inner contour of the limiting groove matches the outer contour of the bearing.

2. The motor assembly according to claim 1, characterized in that a first protrusion is provided on the circumferential side of the bearing, the first protrusion is located within the limiting groove, and the outer contour of the first protrusion matches the inner contour of the limiting groove.

3. The motor assembly according to claim 2, characterized in that a second protrusion is provided on the circumferential side of the output shaft, located between the first protrusion and the motor body.

4. An insertion hole is provided at the output terminal of the motor body. The motor assembly according to claim 1, characterized in that the output shaft is inserted into the insertion hole.

5. The motor assembly according to claim 1, characterized in that the case includes a first case and a second case that are detachably connected.

6. The motor assembly according to claim 5, characterized in that the first case and the second case are engaged or screwed together.

7. The motor assembly according to claim 1, characterized in that the bearing includes one of a self-lubricating bearing, an oil-impregnated bearing, and a ball bearing.

8. The motor assembly according to claim 1, characterized in that the output shaft is bonded to or screwed to an external load.

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