Miniature direct-current motor end cover structure

Abstract

The utility model relates to the technical field of direct current micro motors, and discloses a micro direct current motor end cover structure which comprises an end cover plane, the surface of the end cover plane is of a plane structure, straight edges are arranged on the front side and the rear side of the end cover plane, and arc edges are arranged on the two sides of the end cover plane. Grooves are formed in the positions, close to the four corners, of the top of the end cover plane, a through hole is formed in the center of the top of the end cover plane, a circular truncated cone is arranged in the through hole, and terminal holes are formed in the positions, close to the edges of the two sides, of the top of the end cover plane. According to the utility model, the problems that the outer end face of the end cover of the existing direct-current micro motor is provided with a groove, tin beads generated during terminal welding can fall into the groove and are difficult to treat, the tin beads are adhered to the end cover and fall into the whole machine during use, abnormal noise is generated, and the service life of the end cover is prolonged are solved. And in a severe case, electronic elements are short-circuited to cause the function loss of the whole machine.

Description

Technical Field

[0001] The utility model relates to the technical field of DC micro motors, in particular to an end cover structure of a micro DC motor. Background Art

[0002] Micro DC motors are used for machines that input or output DC current. They are rotating motors that output or input DC power and can be categorized as special motors, electromagnetic motors, and permanent magnet motors. Special motors generally lack windings and are more complex to drive, forming their own distinct class of motors. Electromagnetic motors have distinct characteristics depending on their excitation methods. Permanent magnet motors offer performance similar to electromagnetic shunt motors, with high starting torque, rigid mechanical characteristics, and minimal speed fluctuations with load changes. They are suitable for low-power DC drives such as those used in electric toys, power tools, audio equipment, and automotive electronics. This article focuses on driving these low-power, low-voltage, and compact micro DC motors.

[0003] When using a DC micro motor, the outer end surface of the end cover of a traditional DC micro motor has a groove. When the terminals are welded, the tin beads will fall into the groove and are difficult to clean. When the tin beads stick to the end cover and fall during use, they will move around in the entire machine, causing abnormal noise. In severe cases, they may cause a short circuit in the electronic components, resulting in loss of function of the entire machine. Utility Model Content

[0004] The purpose of the utility model is to provide a micro DC motor end cover structure to solve the problem proposed in the above background art that the outer end surface of the end cover of the existing DC micro motor has a groove. When the terminal is welded, the tin balls will fall into the groove and are difficult to clean. The tin balls stick to the end cover and fall off during use, which will move around in the whole machine, produce abnormal noise, and in serious cases, cause short circuit of electronic components and cause loss of function of the whole machine.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a micro DC motor end cover structure, including an end cover plane, the surface of the end cover plane is arranged into a plane structure, straight edges are arranged on the front and rear sides of the end cover plane, the two sides of the end cover plane are arranged into arc edges, the top of the end cover plane is provided with grooves near the four corners, a through hole is provided at the top center of the end cover plane, a frustum is provided inside the through hole, and terminal holes are provided at the top of the end cover plane near the edges on both sides.

[0006] As a preferred embodiment, a first slot is provided at the bottom of the end cover plane near the front edge, and the bottom cover is snap-connected inside the first slot.

[0007] As a preferred embodiment, the top of the bottom cover is provided with engaging grooves along the horizontal direction at edges near both sides.

[0008] As a preferred embodiment, a semicircular groove is provided on the top of the bottom cover near the center of the front side.

[0009] As a preferred embodiment, second slots are provided on the inner surface of the first slot near the edges on both sides, and damping blocks are fixedly provided on the inner walls on both sides of the two second slots near the center.

[0010] As a preferred embodiment, the inner surface of the bottom cover is fixedly connected to edges on both sides thereof, and both sides of the block are snap-connected to the outer surface of the damping block.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] The utility model fixes screws through the grooves on the end cover plane, so that the end cover plane is easy to be fixed on the motor, and then the positive and negative terminals are fixed through the terminal holes. Soldering is required when connecting the terminals. Tin beads generated during welding on the terminals will accumulate on the end cover plane, which can be effectively cleaned by brushing or blowing, thereby ensuring that the end cover plane is clean. Since straight edges are provided on the front and back sides of the end cover plane, it is easy to handle the tin beads at the straight edges, which makes the device easy to use. It is further fixed by the round table, making the device easy to install. The engaging groove can make the wires on the motor easy to pass through the engaging groove for fixation. By moving the semicircular groove, the bottom cover can be easily opened from the inside of the first engaging groove, making the device easy to repair and replace. At the same time, the engaging effect of the damping block by the engaging block makes it easy to fix the bottom cover, thereby making the device easy to use effectively and improving the use effect of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the main three-dimensional structure of a micro DC motor end cover structure proposed by the utility model;

[0014] Figure 2 This is a side view schematic diagram of a micro DC motor end cover structure proposed by the utility model;

[0015] Figure 3 This is a bottom-up three-dimensional structural diagram of a micro DC motor end cover structure proposed by the utility model;

[0016] Figure 4 This utility model proposes a micro DC motor end cover structure Figure 3 Schematic diagram of the three-dimensional structure at point A in the middle.

[0017] In the figure: 1. End cover plane; 2. Straight edge; 3. Arc edge; 4. Groove; 5. Through hole; 6. Cone; 7. Terminal hole; 8. First slot; 9. Bottom cover; 10. Engaging slot; 11. Semicircular slot; 12. Second slot; 13. Damping block; 14. Card block. DETAILED DESCRIPTION

[0018] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described below with reference to the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other without conflict.

[0019] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0020] See also Figures 1-4 The utility model provides a technical solution: a micro DC motor end cover structure, including an end cover plane 1, the surface of the end cover plane 1 is set to a plane structure, the front and rear sides of the end cover plane 1 are provided with straight edges 2, the two sides of the end cover plane 1 are set to arc edges 3, the top of the end cover plane 1 is provided with grooves 4 near the four corners, the top center of the end cover plane 1 is provided with a through hole 5, the interior of the through hole 5 is provided with a frustum 6, the top of the end cover plane 1 is provided with terminal holes 7 near the edges on both sides, the screws are fixed through the grooves 4 on the end cover plane 1, so that the end cover plane 1 is easy to fix on the motor, and then the positive and negative terminals are fixed through the terminal holes 7. Soldering is required when connecting the terminals. The tin beads generated during welding on the terminals will accumulate on the end cover plane 1, which can be effectively cleaned by brushing or blowing.

[0021] A first card slot 8 is provided at the bottom of the end cover plane 1 near the front edge, and the interior of the first card slot 8 is snap-connected with a bottom cover 9. The bottom cover 9 is snap-fitted into the interior of the first card slot 8 to be fixed, making the bottom cover 9 safer and more convenient to use.

[0022] The top of the bottom cover 9 is provided with snap-fitting grooves 10 along the horizontal direction near the edges on both sides. The snap-fitting grooves 10 facilitate the connection of the wires of the motor.

[0023] A semicircular groove 11 is provided at the center of the top of the bottom cover 9 near the front side. The arrangement of the semicircular groove 11 makes it easy to open the bottom cover 9.

[0024] The inner surface of the first slot 8 is provided with a second slot 12 near the edges on both sides, and the inner walls of the two second slots 12 are fixedly provided with a damping block 13 near the center. The inner surface of the bottom cover 9 is fixedly connected with a clamping block 14 near the edges on both sides, and the two sides of the clamping block 14 are clamped and connected with the outer surface of the damping block 13. The clamping effect of the clamping block 14 and the damping block 13 facilitates the fixing of the bottom cover 9, thereby facilitating the effective use of the device and improving the use effect of the device.

[0025] Working principle: When the device is in use, first fix the screws through the groove 4 on the end cover plane 1, so that the end cover plane 1 is easy to fix on the motor, and then fix the positive and negative terminals through the terminal hole 7. Soldering is required when connecting the terminals. The tin beads generated during welding on the terminals will accumulate on the end cover plane 1. It can be effectively cleaned by brushing or blowing to ensure that the end cover plane 1 is clean. Since straight edges 2 are provided on the front and back sides of the end cover plane 1, it is easy to handle the tin beads at the straight edges 2, which makes it easy to use the device. It is further fixed by the round table 6, making the device easy to install. The locking groove 10 can make the wires on the motor easy to pass through the locking groove 10 for fixation. By moving the semicircular groove 11, the bottom cover 9 can be easily opened from the inside of the first locking groove 8, making the device easy to repair and replace. At the same time, the locking block 14 is easy to fix the bottom cover 9 under the locking effect of the damping block 13, making the device easy to use effectively and improving the use effect of the device.

[0026] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any other form. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes for application in other fields. However, any simple modification, equivalent change and modification of the above embodiment made according to the technical essence of the present invention without departing from the content of the technical solution of the present invention shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A micro DC motor end cap structure, comprising an end cap plane (1), characterized in that: The surface of the end cover plane (1) is set to a plane structure, the front and rear sides of the end cover plane (1) are provided with straight edges (2), the two sides of the end cover plane (1) are provided with arc edges (3), the top of the end cover plane (1) is provided with grooves (4) near the four corners, the top center of the end cover plane (1) is provided with a through hole (5), the interior of the through hole (5) is provided with a frustum (6), and the top of the end cover plane (1) is provided with terminal holes (7) near the edges of both sides.

2. The micro DC motor end cover structure according to claim 1, characterized in that: A first card slot (8) is provided at the bottom of the end cover plane (1) near the front edge, and the interior of the first card slot (8) is engaged with a bottom cover (9).

3. The micro DC motor end cover structure according to claim 2, characterized in that: The top of the bottom cover (9) is provided with engaging grooves (10) in the horizontal direction near the edges on both sides.

4. The micro DC motor end cover structure according to claim 2, characterized in that: A semicircular groove (11) is provided at the center of the top of the bottom cover (9) near the front side.

5. The micro DC motor end cover structure according to claim 2, characterized in that: Second slots (12) are provided on the inner surface of the first slot (8) near the edges on both sides, and damping blocks (13) are fixedly provided on the inner surface walls on both sides of the two second slots (12) near the center.

6. The micro DC motor end cover structure according to claim 5, characterized in that: The inner surface of the bottom cover (9) is fixedly connected to edges on both sides thereof, and both sides of the clamping block (14) are clamped and connected to the outer surface of the damping block (13).

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