DC motor controller
By designing a movable heat dissipation plate and lifting mechanism in the DC motor controller, the shape memory plastic is used to drive the heat dissipation plate to raise heat dissipation at high temperatures, and protect the inside through a sealing plug, the problem of the controller's independent heat dissipation and preventing debris from entering. It realizes the effect of automated heat dissipation and temperature reduction.
Patent Information
- Application Number
- CN202421018765.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-11
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2034-05-11
AI Technical Summary
It is difficult for DC motor controllers to dissipate heat independently in high temperature environments, and common open-hole heat dissipation methods can easily cause external debris to enter the controller and cause damage.
A DC motor controller including a shell, PCB board, movable heat sink and lifting mechanism is designed. The shape memory plastic is used to drive the movable heat sink to raise heat when the temperature rises, and protect the inside from entering through a sealing plug.
It realizes automatic heat dissipation effect, reduces the temperature inside the controller, and effectively prevents external debris from entering, improving the reliability and life of the controller.
Smart Images
Figure CN222302278U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of motor controllers, and in particular to a DC motor controller. Background Art
[0002] DC motor is a very commonly used motor that can realize the mutual conversion between DC power and mechanical energy. By installing a controller on the DC motor, the motor can be actively controlled to work in the set direction, speed, angle, and response time. Therefore, the controller is the soul of the DC motor. The staff's instructions to the DC motor need to be conveyed through the controller. Therefore, in a high temperature environment, the temperature inside the controller will inevitably be too high. If the heat is not dissipated in time, the controller will be damaged. However, it is not possible to simply use the opening method to dissipate heat. If water enters the controller through the opening, it will also cause damage to the controller.
[0003] With respect to the above-mentioned related technologies, the inventor believes that common DC motor controllers have the defect of being difficult to dissipate heat independently. Relying on opening the heat dissipation holes is likely to cause external debris to enter the controller when heat dissipation is not needed. Therefore, a DC motor controller is proposed to solve the above problem.
[0004] The above information disclosed in the background technology is only used to increase the understanding of the background technology of the present application, and therefore, it may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content
[0005] In order to solve the problem that common DC motor controllers are difficult to dissipate heat autonomously, the present application provides a DC motor controller.
[0006] The DC motor controller provided in this application adopts the following technical solution:
[0007] A DC motor controller comprises a shell and a PCB board, wherein the PCB board is arranged inside the shell, a ventilation hole is opened on the top wall of the shell, a side baffle is arranged on the top of the shell, a movable heat sink is arranged on the top of the side baffle, a plurality of movable rods are arranged on the bottom wall of the movable heat sink, and the plurality of movable rods respectively pass through the side baffles, and a lifting mechanism is arranged inside the shell.
[0008] Preferably, a plurality of sealing plugs are installed on the top wall of the side baffle, and the plurality of sealing plugs are all against the bottom wall of the movable heat sink.
[0009] Preferably, the lifting mechanism includes shape memory plastic, a baffle rod, a connecting rod, two moving rods, a plurality of springs and a plurality of protrusions. A placement groove is provided on the bottom wall of the outer shell. The connecting rod is arranged between the two moving rods. Both of the moving rods are slidably connected to the bottom wall of the outer shell. The baffle rod is arranged on the bottom wall of the connecting rod. One end of the shape memory plastic is fixedly connected to the side wall of the placement groove, and the other end is abutted against the side wall of the baffle rod. Several of the springs are respectively arranged between the connecting rod and the side wall of the outer shell. The bottoms of several of the moving rods are respectively abutted against the top wall of the moving rod. Several of the protrusions are respectively arranged on the bottom wall of the moving rod. The number of the protrusions is consistent with the number of the moving rods.
[0010] Preferably, a buffer block is installed on the inner wall of the shell, and the buffer block is located at the end of the movement rod away from the spring.
[0011] Preferably, the end of the movable rod abutting against the motion rod is designed to be arc-shaped, and each of the protrusions corresponds to the position of a movable rod.
[0012] In summary, this application includes the following beneficial technical effects:
[0013] The shape memory plastic in the lifting mechanism can release the restriction on the baffle rod after the internal temperature of the controller rises to a certain level, so that the protrusion moves to the bottom of the movable rod and lifts the movable heat sink for heat dissipation. The movable heat sink in the normal state will fall on the side baffle. Under the action of the sealing plug, the PCB board can be protected from being affected by external debris. Compared with the existing technology, it has the effect of automatically dissipating the heat inside the controller. After the temperature inside the controller drops, the movable heat sink will fall back to its initial position. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a structural schematic diagram of a DC motor controller in an embodiment of the application;
[0015] Figure 2 is a schematic diagram of the structure of the movable rod and the motion rod in the embodiment of the application;
[0016] Figure 3 It is a schematic diagram of the structure of the shape memory plastic and the baffle in the embodiment of the application.
[0017] Explanation of the accompanying drawings: 1. Shell; 2. PCB board; 3. Air vent; 4. Side baffle; 5. Movable heat sink; 6. Movable rod; 7. Sealing plug; 8. Shape memory plastic; 9. Baffle rod; 10. Connecting rod; 11. Moving rod; 12. Spring; 13. Bump; 14. Placement groove; 15. Buffer block. DETAILED DESCRIPTION
[0018] The following is combined with Figure 1-3 This application is described in further detail.
[0019] The present application embodiment discloses a DC motor controller. Figure 1 A DC motor controller includes a housing 1 and a PCB board 2. The PCB board 2 is arranged inside the housing 1. A vent hole 3 is opened on the top wall of the housing 1. A side baffle 4 is arranged on the top of the housing 1. A movable heat sink 5 is arranged on the top of the side baffle 4. A plurality of sealing plugs 7 are arranged on the top wall of the side baffle 4. The plurality of sealing plugs 7 are all against the bottom wall of the movable heat sink 5. The arrangement of the sealing plugs 7 can reduce the gap between the movable heat sink 5 and the side baffle 4 as much as possible, thereby ensuring that external debris is difficult to enter the housing 1, thereby ensuring the safety of the internal PCB board 2;
[0020] A plurality of movable rods 6 are installed on the bottom wall of the movable heat sink 5, and the plurality of movable rods 6 respectively pass through the side baffles 4, and extend into the housing 1 through the side baffles 4, so as to abut against the top wall of the moving rod 11. When the moving rod 11 moves, the protrusion 13 will lift the movable rod 6, so that the movable heat sink 5 rises, which is convenient for heat dissipation;
[0021] Reference Figure 2 and Figure 3 A lifting mechanism is arranged inside the housing 1, and the lifting mechanism includes a shape memory plastic 8, a stopper 9, a connecting rod 10, two moving rods 11, a plurality of springs 12 and a plurality of protrusions 13. The temperature range in which the shape memory plastic 8 deforms is 60-75°C, and the controller in full operation can fully reach this temperature. Therefore, when this temperature is reached, the movable heat sink 5 can be opened. After the temperature drops, the shape memory plastic 8 can push the stopper 9 back to the initial position.
[0022] The bottom wall of the housing 1 is provided with a placement groove 14, the connecting rod 10 is arranged between the two movement rods 11, and the two movement rods 11 are slidably connected to the bottom wall of the housing 1. A buffer block 15 is arranged on the inner wall of the housing 1, and the buffer block 15 is located at the end of the movement rod 11 away from the spring 12. The buffer block 15 is mainly provided to prevent the movement rod 11 from moving too long, causing the protrusion 13 to be separated from the bottom of the movable rod 6;
[0023] The blocking rod 9 is installed on the bottom wall of the connecting rod 10, one end of the shape memory plastic 8 is fixedly connected to the side wall of the placement groove 14, and the other end is against the side wall of the blocking rod 9, a number of springs 12 are respectively installed between the connecting rod 10 and the side wall of the outer shell 1, the bottoms of a number of movable rods 6 are respectively against the top wall of the movement rod 11, and a number of protrusions 13 are respectively installed on the bottom wall of the movement rod 11. The number of protrusions 13 is consistent with the number of movable rods 6. The end of the movable rod 6 against the movement rod 11 is arc-shaped, and each protrusion 13 corresponds to the position of a movable rod 6. When the movement rod 11 moves, each protrusion 13 will move at the same time, so that each movable rod 6 can rise at the same time, and the movable heat sink 5 can rise stably.
[0024] The implementation principle of a DC motor controller in an embodiment of the present application is as follows: when the temperature in the housing 1 reaches above 60°C, the shape memory plastic 8 will bend, so that the blocking rod 9, under the action of the spring 12, drives the two moving rods 11 to move toward the buffer block 15. When the protrusion 13 follows the movement of the moving rod 11, it will squeeze the movable rod 6 upward, thereby causing the movable rod 6 to drive the movable heat sink 5 to rise, and the heat can be dissipated through the air vents 3. The moving rod 11 will also be stably in the current position under the obstruction of the buffer block 15. When the temperature drops, the shape memory plastic 8 will return to the initial state, and during the recovery process, it will push the blocking rod 9 to compress the spring 12, thereby causing the moving rod 11 to return to the initial position, and the movable heat sink 5 will also fall again.
[0025] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;
[0026] Secondly: In the drawings of the embodiments disclosed in the present utility model, only the structures related to the embodiments disclosed in the present utility model are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;
[0027] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.
[0028] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.
Claims
1. A DC motor controller, comprising a housing (1) and a PCB board (2), characterized in that: The PCB board (2) is arranged inside the outer shell (1); a ventilation hole (3) is opened on the top wall of the outer shell (1); a side baffle (4) is arranged on the top of the outer shell (1); a movable heat sink (5) is arranged on the top of the side baffle (4); a plurality of movable rods (6) are arranged on the bottom wall of the movable heat sink (5); the plurality of movable rods (6) respectively pass through the side baffle (4); and a lifting mechanism is arranged inside the outer shell (1).
2. A DC motor controller according to claim 1, characterized in that: A plurality of sealing plugs (7) are installed on the top wall of the side baffle (4), and the plurality of sealing plugs (7) are all in contact with the bottom wall of the movable heat dissipation plate (5).
3. A DC motor controller according to claim 1, characterized in that: The lifting mechanism comprises a shape memory plastic (8), a stopper rod (9), a connecting rod (10), two moving rods (11), a plurality of springs (12) and a plurality of protrusions (13); a placement groove (14) is provided on the bottom wall of the shell (1); the connecting rod (10) is arranged between the two moving rods (11); the two moving rods (11) are both slidably connected to the bottom wall of the shell (1); the stopper rod (9) is arranged on the bottom wall of the connecting rod (10); one end of the shape memory plastic (8) is fixedly connected to the side wall of the placement groove (14); the other end is against the side wall of the stopper rod (9); the plurality of springs (12) are respectively arranged between the connecting rod (10) and the side wall of the shell (1); the bottoms of the plurality of moving rods (6) are respectively against the top walls of the moving rods (11); the plurality of protrusions (13) are respectively arranged on the bottom wall of the moving rod (11); the number of the protrusions (13) is the same as the number of the moving rods (6).
4. A DC motor controller according to claim 3, characterized in that: A buffer block (15) is installed on the inner wall of the housing (1), and the buffer block (15) is located at the end of the movement rod (11) away from the spring (12).
5. A DC motor controller according to claim 3, characterized in that: The end of the movable rod (6) abutting against the motion rod (11) is designed to be arc-shaped, and each of the protrusions (13) corresponds to the position of a movable rod (6).