High-precision brush direct-current unidirectional digital display speed regulator

Abstract

The utility model relates to the technical field of motor speed regulation control, in particular to a high-precision brush direct-current unidirectional digital display speed regulator, which comprises a speed regulator body, a regulation and control rotating shaft is arranged at the top of the speed regulator body, and a vertical push rod is arranged at the outer end of the regulation and control rotating shaft. The inner end of the vertical pushing rod movably extends into the regulation and control rotating shaft through a telescopic column, the telescopic column is sleeved with an extension spring, a lantern ring is arranged outside the regulation and control rotating shaft, and a dynamic ring and a fixed ring are arranged at the upper end and the lower end of the interior of the lantern ring correspondingly; an upper gear ring and a lower gear ring are arranged on the corresponding sides of the dynamic ring and the fixed ring respectively, and the two sides of the top of the dynamic ring are connected with the bottom ends of the vertical pushing rods through connecting pieces. According to the high-precision brush direct-current unidirectional digital display speed regulator, a push rod type regulation structure is adopted, so that speed fluctuation caused by mistaken touch is avoided, and the stability and regulation precision of a set speed are improved.

Description

Technical Field

[0001] This utility model relates to the field of motor speed control technology, specifically a high-precision brushed DC unidirectional digital display speed controller. Background Technology

[0002] In industrial automation and electromechanical equipment, DC motors are widely used due to their high starting torque and good speed regulation performance. Brushed DC motors, with their advantages of simple structure and low cost, still occupy an important position in low-power applications. To meet the speed requirements of different operating conditions, speed controllers have become key supporting equipment, with rotary analog speed controllers currently being the mainstream. With the development of digital display technology, speed controllers with speed display functions are gradually becoming more common, improving the intuitiveness of operation and control accuracy.

[0003] Most existing brushed DC speed controllers use a knob adjustment method, where the output voltage is changed by manually rotating a potentiometer to adjust the motor speed. Although this structure is simple, it has many problems in actual use. For example, in complex working environments, operators or external objects may accidentally touch the knob, causing the set speed to deviate and affecting the stability of the equipment operation. At the same time, the knob adjustment lacks a precise positioning mechanism, making it difficult to achieve fine-tuning during the adjustment process, which can easily cause speed fluctuations, affecting the continuity of the production process and product quality. Utility Model Content

[0004] The purpose of this invention is to provide a high-precision brushed DC unidirectional digital display speed controller to solve the problems mentioned in the background art, such as the susceptibility to accidental touches, unstable speed settings, and difficulty in fine-tuning due to the lack of a precise positioning mechanism in current brushed DC speed controllers, which are subject to knob adjustment, thus affecting the continuity of the production process and product quality.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a high-precision brushed DC unidirectional digital display speed controller, comprising a speed controller body, a control shaft at the top of the speed controller body, a vertical push rod at the outer end of the control shaft, an inner end of the vertical push rod extending movably into the interior of the control shaft via a telescopic column, a tension spring sleeved on the outside of the telescopic column, and a collar on the outside of the control shaft, a dynamic ring and a fixed ring respectively at the upper and lower ends of the collar, an upper toothed ring and a lower toothed ring respectively on the corresponding side of the dynamic ring and the fixed ring, and both sides of the top of the dynamic ring are connected to the bottom end of the vertical push rod via connecting parts.

[0006] Preferably, the center of the dynamic ring is movably sleeved outside the control shaft, and the center of the fixed ring is fixedly sleeved outside the control shaft by a docking ring.

[0007] Preferably, the upper and lower toothed rings are provided with a plurality of equally spaced serrated protrusions on one side of their respective sides. The serrated protrusions are inclined along the circumferential direction with an inclination angle of 15°-30°.

[0008] Preferably, the bottom of the dynamic ring is provided with an elastic telescopic ring through an annular notch, and the upper toothed ring is welded and fixed to the bottom of the elastic telescopic ring.

[0009] Preferably, threaded rings are welded and fixed to the inner walls on both sides of the upper end of the collar, and a clamping bolt is vertically inserted into the inside of the threaded ring through a threaded structure.

[0010] Preferably, a support ring is provided on the inner wall of the lower end of the collar, and the bottom of the fixing ring is connected to the top of the support ring through an annular guide rail.

[0011] Compared with existing technologies, the advantages of this invention are as follows: This high-precision brushed DC unidirectional digital display speed controller, by adopting a push-rod type adjustment structure, avoids speed fluctuations caused by accidental touches, thus improving the stability and adjustment accuracy of the set speed. Through the design of a vertical push rod, telescopic column, and tension spring, this high-precision brushed DC unidirectional digital display speed controller achieves precise and stable adjustment of the control shaft rotation. Simultaneously, the cooperation between the dynamic ring and the connecting parts ensures that the upper and lower gear rings can quickly separate or tightly engage when needed, further enhancing the speed controller's response speed and positioning accuracy, effectively solving the problem of traditional speed controllers being easily interfered with in complex working environments. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of a high-precision brushed DC unidirectional digital display speed controller according to the present invention.

[0013] Figure 2 This is a schematic diagram of the internal structure of the collar of a high-precision brushed DC unidirectional digital display speed controller according to this utility model.

[0014] Figure 3 This is a schematic diagram of the dynamic ring bottom structure of a high-precision brushed DC unidirectional digital display speed controller according to this utility model.

[0015] Figure 4 This is a schematic diagram of the top structure of the fixed ring of a high-precision brushed DC unidirectional digital display speed controller according to this utility model.

[0016] In the diagram: 1. Speed ​​controller body; 2. Control shaft; 201. Vertical push rod; 202. Telescopic column; 203. Tension spring; 3. Collar; 4. Dynamic ring; 5. Upper toothed ring; 6. Lower toothed ring; 7. Fixed ring; 8. Connecting piece; 9. Threaded ring; 10. Tightening bolt; 11. Support ring; 12. Circular guide rail; 13. Elastic telescopic ring. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figure 1-4This utility model provides a technical solution: a high-precision brushed DC unidirectional digital display speed controller, including a speed controller body 1. A control shaft 2 is provided at the top of the speed controller body 1. A vertical push rod 201 is provided at the outer end of the control shaft 2. The inner end of the vertical push rod 201 extends into the interior of the control shaft 2 via a telescopic column 202. A tension spring 203 is sleeved on the outside of the telescopic column 202. A collar 3 is provided on the outside of the control shaft 2. A dynamic ring 4 and a fixed ring 7 are respectively provided at the upper and lower ends inside the collar 3. An upper toothed ring 5 and a lower toothed ring 6 are respectively provided on the corresponding side of the dynamic ring 4 and the fixed ring 7. Both sides of the top of the dynamic ring 4 are connected to the bottom end of the vertical push rod 201 via connecting parts 8. This structure allows the control shaft 2 to rotate... When adjustment is performed, the vertical push rod 201 is pulled upwards, causing the telescopic column 202 to extend and retract within the control shaft 2. Simultaneously, this causes the tension spring 203 to extend. As the vertical push rod 201 pulls upwards, the portion of the dynamic ring 4 connected to the bottom of the vertical push rod 201 via the connector 8 also rises, causing the upper toothed ring 5 and lower toothed ring 6 to separate, releasing the locking state and allowing the control shaft 2 to rotate freely to the desired position. After adjustment, the external force is removed, and under the restoring force of the tension spring 203, the vertical push rod 201 resets, causing the dynamic ring 4 to descend. This causes the upper toothed ring 5 and lower toothed ring 6 to reconnect and lock together, re-fixing the position of the control shaft 2, thereby achieving precise adjustment. This design avoids speed deviation caused by accidental touches, improves the stability and adjustment accuracy of the speed controller, and solves the problems of easy interference and difficulty in fine adjustment of manual knobs in existing technologies. It ensures the stability of equipment operation and the continuity of the production process, improving product quality. The center of the dynamic ring 4 is movably sleeved on the outside of the control shaft 2, and the center of the fixed ring 7 is fixedly sleeved on the outside of the control shaft 2 via a mating ring. This structure ensures that the dynamic ring 4 has stable guidance during up-and-down movement or rotation, avoiding poor meshing or inaccurate adjustment due to deviation. Simultaneously, the relative position between the fixed ring 7 and the dynamic ring 4 is maintained, ensuring precise alignment of the upper toothed ring 5 and the lower toothed ring 6 during separation or meshing, thereby ensuring the overall stability of the control shaft 2. To ensure the smoothness and accuracy of the body rotation adjustment, several equally spaced serrated protrusions are welded and fixed around one side of the upper toothed ring 5 and the lower toothed ring 6. These serrated protrusions are inclined along the circumference, with an inclination angle of 15°-30°. This structure creates a certain axial locking force when the serrated protrusions on the upper toothed ring 5 and the lower toothed ring 6 mesh together, enhancing the meshing stability between the upper toothed ring 5 and the lower toothed ring 6, preventing unexpected displacement caused by vibration or external force, and ensuring that the adjustment shaft 2 can be firmly locked in the set position after adjustment. The bottom of the dynamic ring 4 is provided with an elastic telescopic ring 13 through an annular notch. The elastic telescopic ring 13 is made of annular elastic material, and the upper toothed ring 5 is welded and fixed to the bottom of the elastic telescopic ring 13.This structure's elastic telescopic ring 13 applies continuous elastic pressure to the upper toothed ring 5 during compression or extension, ensuring that the upper toothed ring 5 and the lower toothed ring 6 remain tightly fitted during meshing. This effectively improves the meshing stability and contact rigidity between the two, thereby enhancing the accuracy of the positioning of the control shaft 2 and the locking strength. Threaded rings 9 are welded and fixed to the inner walls of both sides of the upper end of the collar 3, and a clamping bolt 10 is vertically inserted into the threaded ring 9 through a threaded structure. The top of the dynamic ring 4 has clamping ports on both sides that match the bottom structure of the clamping bolt 10. After the speed regulator is adjusted, the clamping bolt 10 rotates through the threaded ring 9, causing its bottom end to... The two sides of the top of the downward-pressing dynamic ring 4 serve as auxiliary limiters and enhance the stability of the dynamic ring 4 in the locked state. This provides additional mechanical fixing force outside the main positioning structure, preventing the dynamic ring 4 from shifting or loosening due to vibration or external force, thereby further improving the ability of the adjusting shaft 2 to maintain its position. A support ring 11 is welded and fixed to the inner wall of the lower end of the collar 3, and the bottom of the fixed ring 7 is connected to the top of the support ring 11 through the annular guide rail 12. This structure not only provides reliable axial and radial support for the fixed ring 7, but also achieves guidance and balance during rotation through the cooperation of the annular guide rail 12 and the support ring 11.

[0019] Working Principle: When using this high-precision brushed DC unidirectional digital display speed controller, the operator first rotates the control shaft 2. At this time, the vertical push rod 201 is pulled upward, causing the telescopic column 202 to extend and retract inside the control shaft 2, and simultaneously stretching the tension spring 203. As the vertical push rod 201 moves upward, the dynamic ring 4 connected to its bottom end through the connector 8 also rises, causing the upper toothed ring 5 at the bottom of the dynamic ring 4 to gradually separate from the lower toothed ring 6 on the fixed ring 7, disengaging the engagement. The control shaft 2 thus gains free rotation space. After the operator continues to rotate the control shaft 2 to the desired angle position, the applied external force is removed. Under the restoring force of the tension spring 203, the vertical push rod 201 begins to return to its original position downward. The dynamic ring 4 descends synchronously, causing the upper toothed ring 5 to re-engage and lock with the lower toothed ring 6, thereby fixing the control shaft 2 in the set position. At the same time, the fixed ring 7 is fixed to the control shaft 2 through the docking ring and is slidably connected to the top of the support ring 11 by the annular guide rail 12 at the bottom, providing stable support and guidance. To enhance meshing stability, the elastic telescopic ring 13 moves up and down with the dynamic ring 4 in the annular notch at the bottom, and continuously applies elastic pressure to the upper toothed ring 5 to ensure close contact between the upper toothed ring 5 and the lower toothed ring 6. In addition, after adjustment, the bottom end of the threaded ring 9 can be pressed against the top two sides of the dynamic ring 4 by tightening the tightening bolt 10, which further assists in locking the position of the dynamic ring 4, thereby completing a series of operations.

[0020] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A high-precision brush DC single-direction digital display speed regulator, comprising a speed regulator body (1), the top of the speed regulator body (1) is provided with a regulating rotating shaft (2), characterized in that: The outer end of the control shaft (2) is provided with a vertical push rod (201). The inner end of the vertical push rod (201) extends into the interior of the control shaft (2) through a telescopic column (202). A tension spring (203) is sleeved on the outside of the telescopic column (202). A collar (3) is provided on the outside of the control shaft (2). A dynamic ring (4) and a fixed ring (7) are provided at the upper and lower ends of the collar (3). An upper toothed ring (5) and a lower toothed ring (6) are provided on the corresponding side of the dynamic ring (4) and the fixed ring (7). The top two sides of the dynamic ring (4) are connected to the bottom end of the vertical push rod (201) through a connector (8).

2. A high-precision brush DC single-direction digital display type speed regulator according to claim 1, characterized in that: The center of the dynamic ring (4) is movably sleeved on the outside of the control shaft (2), and the center of the fixed ring (7) is fixedly sleeved on the outside of the control shaft (2) through the docking ring.

3. The high-precision brush DC single-direction digital display type speed regulator according to claim 1, characterized in that: The upper toothed ring (5) and the lower toothed ring (6) are surrounded by a number of equally spaced sawtooth protrusions on their corresponding sides. The sawtooth protrusions are inclined along the circumferential direction, and the inclination angle is 15°-30°.

4. The high-precision brush DC single-direction digital display type speed regulator according to claim 1, characterized in that: The bottom of the dynamic ring (4) is provided with an elastic telescopic ring (13) through an annular notch, and the upper toothed ring (5) is welded and fixed to the bottom of the elastic telescopic ring (13).

5. A high-precision brushed DC unidirectional digital display speed controller according to claim 1, characterized in that: Both sides of the upper end of the collar (3) are welded and fixed with threaded rings (9), and the threaded rings (9) are vertically inserted with a tightening bolt (10) through the threaded structure.

6. The high-precision brush DC single-direction digital display type speed regulator according to claim 1, characterized in that: The inner wall of the lower end of the collar (3) is provided with a support ring (11), and the bottom of the fixing ring (7) is connected to the top of the support ring (11) through an annular guide rail (12).

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