Novel direct current motor
By introducing rotatingly connected gears and external ring gear systems into the DC motor, the design of push holes and fixing rods is used to solve the problem of difficult bearing replacement, achieving convenient disassembly and replacement of bearings, and improving maintenance efficiency.
Patent Information
- Application Number
- CN202422407195.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-30
- Publication Date
- 2025-07-29
- Estimated Expiration
- 2034-09-30
AI Technical Summary
The friction between the bearing and the end cap in existing DC motors makes it difficult to replace and disassemble efficiently, affecting maintenance efficiency.
A new DC motor is designed to drive the rotating disc through the rotating connected gear and external ring gear, and the gradually reduced pushing hole and fixing rod are used to achieve detachable bearings to avoid interference fit and fixing, and to use elastic sliding connections and rollers to reduce friction.
It realizes convenient disassembly of bearings, improves replacement efficiency, reduces maintenance difficulty, and improves maintenance efficiency.
Smart Images
Figure CN223168135U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of DC motors, in particular to a novel DC motor.
Background Art
[0002] A DC motor refers to a rotating electric machine that can convert DC electrical energy into mechanical energy (DC motor) or convert mechanical energy into DC electrical energy (DC generator). It is an electric machine that can realize the mutual conversion of DC electrical energy and mechanical energy. When it operates as a motor, it is a DC motor, converting electrical energy into mechanical energy; when it operates as a generator, it is a DC generator, converting mechanical energy into electrical energy. The existing DC motor mainly consists of a housing, end covers, a stator, a rotor, and bearing connections. The bearing is in an interference fit with the end cover. The output shaft of the rotor passes through the bearing and is connected to external equipment, and the stator and rotor are energized, so that the external equipment can be rotated by the rotor to achieve an operating state.
[0003] Although the above solution can reduce the friction between the end cover and the output shaft through the bearing, there are still the following problems. Since the bearing is in an interference fit with the end cover, during long-term use of the bearing, rusting and jamming may occur. Once the bearing rusts and jams, the bearing needs to be replaced. In the above solution, the bearing is mainly in an interference fit with the end cover. Although the interference-fit bearing can be fixed on the end cover, when the bearing rusts, it is very difficult for personnel to disassemble the bearing during replacement, which will greatly increase the disassembly efficiency of maintenance personnel and bring unnecessary trouble to the personnel.
Content of the Utility Model
[0004] The purpose of the utility model is to solve the problems in the prior art and propose a novel DC motor that can facilitate the replacement of the bearing by personnel.
[0005] To achieve the above purpose, the utility model proposes a novel DC motor, including: a housing, an end cover detachably connected to the housing, bearings both arranged on the end cover, and a rotor-stator assembly arranged in the housing and extending out of the end cover at one end.
[0006] Positioning holes one for the bearings to enter are respectively opened on the end cover. A rotating disk is rotatably connected to the end cover. An external gear ring rotatably connected to the end cover is fixedly connected to the rotating disk. A gear one is rotatably connected to the end cover. The gear one meshes with the external gear ring. A locking mechanism is arranged on the gear one, and the locking mechanism can lock the gear one.
[0007] A gradually decreasing pushing hole is opened on the rotating disk. A fixing rod is elastically slidably connected to the end cover in the vertical direction. One end of the fixing rod can be in contact with the pushing hole. A fixing hole for the fixing rod to enter is opened on the bearing.
[0008] Preferably, the locking mechanism includes a rotating rod rotatably connected to the end cover. One end of the rotating rod is fixedly connected to the first gear. An connecting rod is elastically and slidably connected to the rotating rod. A plurality of connecting holes for the connecting holes to enter are formed in the end cover.
[0009] Preferably, a plurality of first rollers are rotatably connected to the connecting rod, and one end of the first roller can be in contact with the inner wall of the connecting hole.
[0010] Preferably, a positioning rod is fixedly connected to the first positioning hole. A first ball is rotatably connected to the positioning rod. A second positioning hole for the positioning rod to enter is formed in the bearing.
[0011] Preferably, a plurality of second rollers are rotatably connected to the fixed rod, and one end of the second roller can be in contact with the pushing surface on the pushing hole.
[0012] Preferably, a sealing cover is detachably connected to the end cover. A through hole through which one end of the rotor-stator assembly extends to the outside is formed in the sealing cover.
[0013] Preferably, a pull ring is fixedly connected to the connecting rod, and a first spring is fixedly connected to the rotating rod. One end of the first spring is fixedly connected to the connecting rod.
[0014] Advantages of the present utility model: Compared with the prior art, the present utility model drives the external gear ring to rotate by the gear rotatably connected to the end cover, so that the external gear ring drives the rotating disk to rotate. Once the rotating disk is activated, the pushing hole will move. When the pushing hole moves to a certain position, the fixed rod disengages from the bearing, achieving the disassembly of the bearing. By the way of the fixed rod disengaging from the bearing, there is no need to fix the bearing by interference fit, which is convenient for maintenance personnel to disassemble the bearing, further improving the disassembly effect of the bearing and increasing the efficiency of personnel replacing the bearing.
[0015] The features and advantages of the present utility model will be described in detail through embodiments in conjunction with the accompanying drawings.
Description of the Drawings
[0016] Figure 1 is a schematic structural diagram of the present utility model;
[0017] Figure 2 is a schematic diagram of the position of the bearing of the present utility model;
[0018] Figure 3 is a schematic diagram of the position of the fixed rod of the present utility model;
[0019] Figure 4 is a schematic diagram of the position of the first roller of the present utility model.
[0020] In the figure: 1. housing; 2. end cover; 3. bearing; 4. rotor-stator assembly; 5. first positioning hole; 6. rotating disk; 7. external gear ring; 8. first gear; 9. pushing hole; 10. fixing rod; 11. fixing hole; 12. rotating rod; 13. connecting rod; 14. first roller; 15. positioning rod; 16. first ball; 17. second positioning hole; 18. second roller; 19. sealing cover; 20. pull ring; 21. first spring; 22. second spring; 23. connecting hole.
Specific implementation manners
[0021] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.
[0022] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.
[0023] It should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application.
[0024] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, the meaning of "a plurality" is two or more, unless otherwise specifically defined.
[0025] Such as Figures 1 to 4, a new type of DC motor, comprising: a housing 1, an end cover 2 detachably connected to the housing 1, bearings 3 both provided on the end cover 2, and a rotor-stator assembly 4 disposed within the housing 1 and having one end extending outside the end cover 2. The rotor-stator assembly 4 in the present utility model is mainly composed of a rotor with an output shaft and a stator connected together. The rotor is rotatably connected within the housing 1 and has one end extending outside the end cover 2, while the stator is fixedly connected within the housing 1, and the rotor is located therebetween. By connecting the output shaft on the rotor to an external component, the operation of an external device can be achieved;
[0026] The DC motor in the present utility model further includes: a first positioning hole 5, a rotating disk 6, an external gear ring 7, a gear, a locking mechanism, a pushing hole 9, a fixing rod 10, and a fixing hole 11;
[0027] The first positioning hole 5 is opened on the end cover 2 and is mainly for placing the bearing 3. When the bearing 3 is placed on the end cover 2, only the locking mechanism on the gear 8 rotatably connected to the end cover 2 needs to be opened, and the gear 8 is rotated. The rotation of the gear 8 drives the external gear ring 7 that meshes with it and is rotatably connected to the end cover 2 to rotate. The external gear ring 7 drives the rotating disk 6 that is fixedly connected to it and is rotatably connected within the end cover 2 to rotate. The rotation of the rotating disk 6 drives the pushing hole 9 opened on the rotating disk 6 and gradually decreasing in size to rotate, thereby using the pushing hole 9 to push the fixing rod 10 elastically slidably connected to the end cover 2 into the fixing hole 11 opened on the bearing 3, thus realizing the fixation of the bearing 3. Conversely, by reversing the rotating disk 6, the separation of the fixing rod 10 from the bearing 3 can be achieved, thereby realizing the disassembly of the bearing 3. It is worth mentioning that the fixing rod 10 is elastically connected by a second spring 22. The second spring 22 is fixedly connected to the end cover 2 and has one end fixedly connected to the fixing rod 10, so as to realize the reset of the fixing rod 10.
[0028] Specifically, since the locking mechanism includes a rotating rod 12 rotatably connected to the end cover 2, one end of the rotating rod 12 is fixedly connected to the gear 8, and a connecting rod 13 is elastically slidably connected to the rotating rod 12. A plurality of connecting holes for the connecting rod to enter are opened on the end cover 2. Therefore, the rotation of the rotating rod 12 can drive the gear 8 to rotate. When the gear 8 rotates to a certain position and needs to be fixed, the operator releases the connecting rod 13, and the connecting rod 13 enters the connecting hole, thereby realizing the fixation of the gear 8 and further improving the fixation effect of the gear 8.
[0029] Specifically, a plurality of first rollers 14 are rotatably connected to the connecting rod 13. The first rollers 14 can be in contact with the inner wall of the connecting hole, thereby reducing the friction between the connecting rod 13 and the connecting hole.
[0030] Specifically, a positioning rod 15 is fixedly connected to the first positioning hole 5. By rotating the first ball 16 connected to the positioning rod 15 to make it contact with the second positioning hole 17 formed in the bearing 3, the bearing 3 can be positioned and the friction between the positioning rod 15 and the second positioning hole 17 can be reduced.
[0031] Specifically, a number of second rollers 18 are rotatably connected to the fixing rod 10. By making one end of the second roller 18 contact with the pushing surface on the pushing hole 9, the friction between the fixing rod 10 and the pushing hole 9 can be reduced.
[0032] Specifically, since a sealing cover 19 is detachably connected to the end cover 2, and a through hole for one end of the rotor-stator assembly 4 to extend to the outside is formed through the sealing cover 19, the bearing 3 can be sealed, and the sealing effect of the bearing 3 can be further improved.
[0033] Specifically, since a pull ring 20 is fixedly connected to the connecting rod 13, and a first spring 21 is fixedly connected to the rotating rod 12. One end of the first spring 21 is fixedly connected to the connecting rod 13. The pull ring 20 facilitates a person to pull the connecting rod 13, and the first spring 21 can reset the rotating rod 12.
[0034] Principle of the present utility model: By rotating the first gear 8, the external gear ring 7 is driven to drive the rotating disk 6 to rotate. Once the rotating disk 6 rotates, the pushing hole 9 on the rotating disk 6 pushes the fixing rod 10 into the fixing hole 11, so as to fix the bearing 3. On the contrary, when the first gear 8 rotates in the opposite direction, the bearing 3 can be disassembled, and the locking mechanism can lock the first gear 8.
[0035] The above embodiments are illustrative of the present utility model, not restrictive thereof. Any solution obtained by simply transforming the present utility model falls within the protection scope of the present utility model.
Claims
1. A new type of DC motor, comprising: A housing (1), an end cover (2) detachably connected to the housing (1), bearings (3) both provided on the end cover (2), and a rotor-stator assembly (4) provided inside the housing (1) and having one end extending outside the end cover (2), characterized in that Positioning holes one (5) for the bearings (3) to enter are provided on the end cover (2). A rotating disk (6) is rotatably connected to the end cover (2). An external gear ring (7) rotatably connected to the end cover (2) is fixedly connected to the rotating disk (6). A gear one (8) is rotatably connected to the end cover (2). The gear one (8) meshes with the external gear ring (7). A locking mechanism is provided on the gear one (8), and the locking mechanism can lock the gear one (8). A gradually decreasing pushing hole (9) is provided in the rotating disk (6). A fixing rod (10) is elastically slidably connected to the end cover (2) in the vertical direction. One end of the fixing rod (10) can be in contact with the pushing hole (9). A fixing hole (11) for the fixing rod (10) to enter is provided in the bearing (3).
2. A novel DC motor according to claim 1, characterized in that: The locking mechanism includes a rotating rod (12) rotatably connected to the end cover (2). One end of the rotating rod (12) is fixedly connected to the gear one (8). A connecting rod (13) is elastically slidably connected to the rotating rod (12). A number of connecting holes (23) for the connecting rod (13) to enter are provided in the end cover (2).
3. A novel DC motor according to claim 2, characterized in that: A number of rollers one (14) are rotatably connected to the connecting rod (13), and one end of the roller one (14) can be in contact with the inner wall of the connecting hole.
4. A novel DC motor according to claim 1, characterized in that: A positioning rod (15) is fixedly connected to the positioning hole one (5). A ball one (16) is rotatably connected to the positioning rod (15). A positioning hole two (17) for the positioning rod (15) to enter is provided in the bearing (3).
5. A novel DC motor according to claim 2, characterized in that: A number of rollers two (18) are rotatably connected to the fixing hole (11), and one end of the roller two (18) can be in contact with the pushing surface on the pushing hole (9).
6. A novel DC motor according to claim 1, characterized in that: A sealing cover (19) is detachably connected to the end cover (2). A through hole through which one end of the rotor-stator assembly (4) extends to the outside is provided in the sealing cover (19).
7. A novel DC motor according to claim 3, characterized in that: A pull ring (20) is fixedly connected to the connecting rod (13). A spring one (21) is fixedly connected to the end cover (2), and one end of the spring one (21) is fixedly connected to the connecting rod (13).