Electric push rod capable of improving self-locking force
By setting up an electromagnetic power loss controller in the electric push rod, the problem of self-locking force reduction in high temperature and vibration environments is solved, ensuring that the push rod does not fall back when power is cut off, maintains self-locking force, and ensures the stability of the engine fan angle and blowing volume.
Patent Information
- Application Number
- CN202421851437.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-01
- Publication Date
- 2025-06-17
- Estimated Expiration
- 2034-08-01
AI Technical Summary
The existing electric push rods have reduced self-locking force in high temperature and vibration environments, resulting in the engine fan angle not meeting the requirements, affecting the normal operation of the engine.
A protective cover, electromagnetic brake power cord and electromagnetic body are installed on one side of the rear cover of the motor to form an electromagnetic loss controller, so that the push rod can hold the brake motor shaft with the electromagnetic loss controller without working, thereby avoiding backoff.
Through the design of the electromagnetic power loss controller, the push rod does not fall back when the power is cut off and maintains self-locking force, thereby ensuring the stability of the engine fan angle and the adequacy of the blowing volume.
Smart Images
Figure CN222996371U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of electric push rods, and more specifically, the utility model relates to an electric push rod with improved self-locking force. Background Technique
[0002] When removing dust and dissipating heat from the engine water tank through a fan, an electric push rod is needed to push the steering fan to blow air in the opposite direction. The electric push rod is a working mode in which a DC motor is transmitted to a screw through a gear reduction ratio, and the screw drives the nut to stretch back and forth. The existing push rod has insufficient self-locking force. Due to the high-temperature working environment of the engine and the vibration during the operation of the engine, the self-locking force of the push rod decreases after working for a period of time, resulting in the angle of the engine fan not meeting the requirements, the blowing volume of the fan not being large enough, and thus the engine cannot work properly at high temperature. Therefore, in view of this problem, how to design an electric push rod with improved self-locking force has become the problem we need to solve currently. Content of the Utility Model
[0003] In order to overcome the above-mentioned defects of the prior art, an embodiment of the utility model provides an electric push rod with improved self-locking force. By setting an electromagnetic main body, a protective cover, an electromagnetic brake power cord and the electromagnetic main body are installed on one side of the motor rear cover to form an electromagnetic power-off controller, so that the push rod brakes the motor shaft with the electromagnetic power-off controller when it is not working, thereby solving the problem proposed in the above background technique that the push rod has no retraction phenomenon.
[0004] To achieve the above purpose, the utility model provides the following technical solution: An electric push rod with improved self-locking force, including a protective cover, an electromagnetic main body is arranged inside the protective cover, a motor shaft fixing sleeve is installed on one side of the electromagnetic main body, a motor shaft is rotatably connected to the inside of the motor shaft fixing sleeve, an electromagnetic brake power cord is arranged inside the protective cover, a motor rear cover is installed on one side of the protective cover, a DC motor is installed on one side of the motor rear cover, and a gearbox is installed on one side of the DC motor.
[0005] In a preferred embodiment, a first sheet metal part is attached to one side of the gearbox, and a bolt is inserted into the first sheet metal part.
[0006] In a preferred embodiment, the number of the bolts is set to two, and the two bolts are symmetrically arranged about the transverse direction of the gearbox.
[0007] In a preferred embodiment, nuts are threadedly connected to the outer sides of the two bolts, and a second sheet metal part is sleeved on the outer sides of the bolts.
[0008] In a preferred embodiment, the second sheet metal part is arranged on one side of the protective cover, and an outer tube is installed on one side of the gearbox.
[0009] In a preferred embodiment, a telescopic rod is slidably connected inside the outer tube.
[0010] Technical effects and advantages of the present utility model:
[0011] 1. By arranging an electromagnetic main body, a protective cover is installed on one side of the motor rear cover, and an electromagnetic power-off controller is composed of an electromagnetic brake power cord and the electromagnetic main body, so that the push rod uses the electromagnetic power-off controller to brake the motor shaft when not working, thereby preventing the push rod from retracting. When the electric push rod is powered on and working, the electromagnetic power-off controller is simultaneously powered on to release the electromagnetic brake and enable the motor to work normally. Description of the drawings
[0012] Figure 1 is a schematic diagram of the overall structure of the present utility model;
[0013] Figure 2 is a schematic diagram of the structure of the electromagnetic power-off controller of the present utility model;
[0014] Figure 3 is the present utility model Figure 2 of the sectional structure schematic diagram.
[0015] The reference numerals are: 1, the first sheet metal part; 2, the gearbox; 3, the DC motor; 4, the motor rear cover; 5, the protective cover; 6, the electromagnetic brake power cord; 7, the second sheet metal part; 8, the bolt; 9, the nut; 10, the telescopic rod; 11, the outer tube; 12, the motor shaft; 13, the motor shaft fixing sleeve; 14, the electromagnetic main body. Specific embodiments
[0016] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.
[0017] Refer to the attached drawings of the specification Figures 1-3 , as Figure 1As shown in the figure, an electric push rod for improving the self-locking force according to an embodiment of the present utility model includes a protective cover 5. Inside the protective cover 5, there is an electromagnetic main body 14. On one side of the electromagnetic main body 14, there is a motor shaft fixing sleeve 13. Inside the motor shaft fixing sleeve 13, a motor shaft 12 is rotatably connected. Inside the protective cover 5, there is an electromagnetic brake power cord 6. On one side of the protective cover 5, there is a motor rear cover 4. Inside the motor rear cover 4, the motor shaft 12 is sleeved. On one side of the motor rear cover 4, there is a DC motor 3. On one side of the DC motor 3, there is a gearbox 2. On one side of the gearbox 2, there is a first sheet metal part 1. Inside the first sheet metal part 1, there is a bolt 8 inserted. Through the setting of the bolt 8, the bolt 8 is an M5*170 bolt, which fixes the first sheet metal part 1 and the second sheet metal part 7, and further fixes the protective cover 5. The number of bolts 8 is set to two, and the two bolts 8 are symmetrically arranged horizontally with respect to the gearbox 2. On the outer sides of the two bolts 8, there are nuts 9 threadedly connected. Through the setting of the nuts 9, the nuts 9 are M5 washered hex socket head cap nuts, which are connected to the bolts 8 so that the second sheet metal part 7 can be fixed. The outer side of the bolt 8 is sleeved with a second sheet metal part 7. The second sheet metal part 7 is arranged on one side of the protective cover 5. On one side of the gearbox 2, there is an outer tube 11. Inside the outer tube 11, there is a telescopic rod 10 slidably connected.
[0018] It should be noted that when the DC motor 3 is powered on and works, through the gear structure transmission in the gearbox 2, the telescopic rod 10 extends to push an object. When the telescopic rod 10 retracts and stops working after power failure, due to the working environment, the telescopic rod 10 will slowly retract when not powered on, thus failing to meet the working requirements. By installing components such as the protective cover 5, the electromagnetic brake power cord 6, and the electromagnetic main body 14 to form an electromagnetic power-off controller, when the electric push rod is powered off, the electromagnetic power-off controller is powered off simultaneously, so that the electromagnetic power-off controller brakes on the motor shaft 12, preventing the electric push rod from retracting and achieving the desired effect. When the electric push rod is powered on and working, the electromagnetic power-off controller is powered on simultaneously, releasing the electromagnetic brake to enable the motor to work normally.
[0019] Finally, several points should be noted: First, in the description of the present application, it should be noted that unless otherwise specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense, which can be mechanical connection or electrical connection, or the communication inside two components, and can be directly connected. The terms "up", "down", "left", "right", etc. are only used to represent the relative position relationship. When the absolute position of the object being described changes, the relative position relationship may change;
[0020] Second: In the attached drawings of the disclosed embodiments of the present utility model, only the structures related to the disclosed embodiments are involved. Other structures can refer to the general design. Without conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;
[0021] Finally, the above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.
Claims
1. An electric push rod with improved self-locking force, comprising a protective cover (5), characterized in that: An electromagnetic body (14) is provided inside the protective cover (5), a motor shaft fixing sleeve (13) is installed on one side of the electromagnetic body (14), the inner side of the motor shaft fixing sleeve (13) is rotatably connected to the motor shaft (12), an electromagnetic brake power line (6) is provided inside the protective cover (5), a motor back cover (4) is installed on one side of the protective cover (5), a DC motor (3) is installed on one side of the motor back cover (4), and a gear box (2) is installed on one side of the DC motor (3).
2. The electric push rod with improved self-locking force according to claim 1, characterized in that: A first sheet metal component (1) is attached to one side of the gear box (2), and a bolt (8) is inserted into the interior of the first sheet metal component (1).
3. The electric push rod with improved self-locking force according to claim 2, characterized in that: The number of the bolts (8) is set to two, and the two bolts (8) are symmetrically arranged with respect to the transverse direction of the gear box (2).
4. The electric push rod with improved self-locking force according to claim 3, characterized in that: The outer sides of the two bolts (8) are both threadedly connected with nuts (9), and the outer sides of the bolts (8) are sleeved with a second sheet metal part (7).
5. The electric push rod with improved self-locking force according to claim 4, characterized in that: The second sheet metal part (7) is arranged on one side of the protective cover (5), and an outer tube (11) is installed on one side of the gear box (2).
6. The electric push rod with improved self-locking force according to claim 5, characterized in that: The interior of the outer tube (11) is slidably connected with a telescopic rod (10).