An operating mechanism for an automatic transfer switch

Abstract

The utility model relates to an operating mechanism of automatic transfer switch, through setting up two drive grooves on the drive runner, and setting up two output grooves with position corresponding on the output pivot, simultaneously using two drive shafts that are respectively slidably connected in the corresponding drive groove and output groove, realized the transmission between drive runner and output pivot, this design avoided the problem such as skidding, jamming that can appear in traditional transmission mode, ensured the stability and accuracy of power transmission, the swing arm that is connected between central shaft and two drive shafts respectively, and the spring assembly that is connected on two drive shafts, commonly constituted a high -efficient transmission system, and spring assembly can provide proper pre -tightening force for drive shaft, makes drive shaft in drive groove and output groove can slide fast, accurately, when receiving the switching signal, operating mechanism can make a quick response, and drive runner drives output pivot to rotate fast, realizes the quick switching of power supply.

Description

Technical Field

[0001] This utility model relates to the field of low-voltage electrical technology, and in particular to an operating mechanism for an automatic transfer switch. Background Technology

[0002] Automatic transfer switches (ATS) are critical power switching devices used to reliably switch between primary and backup power sources, ensuring continuous power supply to critical loads. The operating mechanism, as the core component of the ATS, directly determines the switch's switching reliability, operating speed, and service life.

[0003] Currently, most automatic transfer switch operating mechanisms on the market use traditional gear transmission, linkage transmission, or cam transmission. While these traditional structures can achieve power switching to a certain extent, they generally suffer from several drawbacks. For example, the transmission structure is complex, resulting in an overall mechanism that is not compact enough and occupies a large space. Gaps in the transmission links can easily cause unstable transmission, jamming, or noise, affecting the accuracy of switching. The response speed is relatively slow, making it difficult to meet the application scenarios with stringent switching time requirements. In addition, the functional protection is limited, lacking effective limit, buffer, and status indication and other multiple protection and monitoring mechanisms, which reduces the safety and service life of the product. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide an operating mechanism for an automatic transfer switch that is compact and reasonable in structure, stable and efficient in transmission, rapid and accurate in response, and has multiple functional guarantees.

[0005] To achieve the above objectives, this utility model employs an operating mechanism for an automatic changeover switch, comprising a drive wheel, an output shaft, a drive shaft, and a central shaft. The drive wheel and the output shaft are coaxially arranged via the central shaft. The drive wheel has two drive slots, and the output shaft has two output slots corresponding to the positions of the drive slots. There are two drive shafts, which are slidably connected to the corresponding drive slots and output slots, respectively. Spring assemblies are connected to both drive shafts.

[0006] The advantages of the above structure are as follows: by opening two drive slots on the drive wheel and setting two corresponding output slots on the output shaft, and using two drive shafts that are slidably connected in the corresponding drive slots and output slots respectively, the transmission between the drive wheel and the output shaft is realized. This design avoids the slippage and jamming problems that may occur in traditional transmission methods, ensuring the stability and accuracy of power transmission. The spring assembly can provide appropriate preload to the drive shaft, enabling the drive shaft to slide quickly and accurately in the drive slots and output slots. When a switching signal is received, the operating mechanism can respond quickly, and the drive wheel drives the output shaft to rotate quickly, realizing rapid power switching and effectively reducing the power outage time during the switching process.

[0007] This utility model further includes a motor as the operating mechanism, and the output shaft of the motor is connected to the drive wheel. By connecting the output shaft of the motor to the drive wheel, the motor is energized to drive the drive wheel to rotate.

[0008] This utility model further includes an operating gear in the operating mechanism, which meshes with the drive wheel. The operating gear has a handle groove for connecting a handle. By adding an operating gear and a drive wheel meshing in the operating mechanism, and by providing a handle groove for connecting a handle on the operating gear, the drive wheel can be rotated by an external force.

[0009] This utility model is further configured as follows: the spring assembly includes a spring guide post fixed to the drive shaft, a spring sleeve sleeved over the spring guide post, and a compression spring sleeved over the spring guide post. The spring guide post has a boss, one end of the compression spring abuts against the boss, and the other end abuts against the spring sleeve. Through the sleeved combination of the spring guide post, spring sleeve, and compression spring, limited space is fully utilized, achieving efficient integration of components. When the drive shaft is displaced by an external force, the compression spring is compressed under the abutment of the boss and spring sleeve, generating an elastic force opposite to the direction of the external force, thus buffering the drive shaft and reducing the impact of external forces on the drive shaft and related components.

[0010] This utility model is further configured such that a first mechanism clamping plate and a second mechanism clamping plate are respectively provided on both sides of the spring assembly. The drive wheel is located on the outside of the first mechanism clamping plate, and the output shaft is located on the outside of the second mechanism clamping plate. Arc-shaped limiting grooves are respectively formed on the first and second mechanism clamping plates corresponding to the movement trajectory of the drive shaft. One end of the drive shaft is housed in the arc-shaped limiting groove of the first mechanism clamping plate and is rotatably connected to the drive groove of the drive wheel. The other end of the drive shaft is housed in the arc-shaped limiting groove of the second mechanism clamping plate and is rotatably connected to the output groove of the output shaft. By placing the drive wheel and output shaft on the outside of the first and second mechanism clamping plates respectively, mutual interference between components is avoided, providing ample space for the installation and operation of other components. Simultaneously, the cooperation between the arc-shaped limiting grooves and the drive shaft ensures that the drive shaft maintains a good rotational connection with the drive wheel and output shaft during movement, achieving coordinated work between components and improving the overall performance and working efficiency of the device.

[0011] This utility model is further configured such that a rotating arm is connected between the central shaft and each of the two drive shafts. The rotating arm configuration enhances the stability of the drive shaft movement and can resist torsion caused by uneven force during movement.

[0012] This utility model is further configured such that an operating gear is disposed between a first mechanism clamping plate and a second mechanism clamping plate, and meshes with a drive wheel rotatably connected to the outside of the first mechanism clamping plate. The gear shaft of the operating gear extends outside the second mechanism clamping plate through a slot and is fixedly fitted with an indicator. By having the gear shaft of the operating gear extend outside the second mechanism clamping plate through a slot and fixedly fitted with an indicator, the movement state of the operating gear can be visually reflected through the indicator.

[0013] This utility model is further configured such that a second mechanism clamping plate has symmetrically mounted limiting shafts on both sides of the upper end of the output shaft. Each limiting shaft is fitted with a swingable limiting component. The second mechanism clamping plate has abutment protrusions corresponding to the swing path of the limiting components, and each limiting shaft is also equipped with a torsion spring. Through this structural configuration, when the limiting component swings to the abutment protrusion position, it is effectively blocked, thereby precisely limiting the movement range of the relevant components and avoiding malfunctions caused by excessive swinging or displacement. Simultaneously, the torsion springs on the limiting shafts provide a reliable restoring force for the limiting components, allowing them to quickly return to their initial position after completing their limiting function. This ensures the accuracy and consistency of each limiting action, improving the stability and reliability of the device operation.

[0014] This utility model is further configured such that each spring sleeve has a fixing groove, and a spring shaft is installed in the fixing groove. The first and second mechanism clamping plates are respectively connected to the corresponding spring sleeves through the spring shafts passing through the fixing grooves. The stable installation of the spring shafts in the fixing grooves enhances the connection strength between the mechanism clamping plates and the spring sleeves, effectively preventing loosening and displacement of the connection parts, thereby ensuring the stability and reliability of the entire device structure.

[0015] This utility model further features four microswitches symmetrically arranged around the output shaft on the outer side of the second mechanism clamping plate. This arrangement provides the device with more precise detection capabilities. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model.

[0017] Figure 2 This is an exploded view of the structure of an embodiment of the present invention.

[0018] Figure 3 This is a schematic diagram of the energy storage spring unit structure according to an embodiment of the present invention.

[0019] Figure 4 This is an exploded view of the output shaft assembly according to an embodiment of the present invention.

[0020] Figure 5 This is a schematic diagram of the output shaft structure according to an embodiment of the present invention.

[0021] Figure 6 This is an exploded view of the drive wheel assembly according to an embodiment of the present invention.

[0022] Figure 7 This is a schematic diagram of the drive wheel structure according to an embodiment of the present invention. Detailed Implementation

[0023] like Figures 1-7 As shown, an embodiment of this utility model provides an operating mechanism for an automatic changeover switch, including a mechanism support, a drive wheel 3, an output shaft 4, a drive shaft 6, a central shaft 5, a rotating arm 7, an operating gear 10, and a motor 17. The mechanism support is formed by splicing together a first mechanism clamping plate 1 and a second mechanism clamping plate 2 that are arranged relatively parallel to each other.

[0024] The drive wheel 3 is rotatably mounted on the outside of the first mechanism clamping plate 1, and the output shaft 4 is rotatably mounted on the outside of the second mechanism clamping plate 2. The drive wheel 3 and the output shaft 4 are coaxially mounted via the central shaft 5.

[0025] Two drive grooves 31 are formed on the disc body of the drive wheel 3 along the circumferential direction. Two output grooves 41 corresponding to the positions of the drive grooves 31 are formed on the disc body of the output shaft 4. The two drive shafts 6 are slidably connected in the corresponding drive grooves 31 and output grooves 41 respectively.

[0026] A rotating arm 7 is connected between the central shaft 5 and the two drive shafts 6 respectively. A spring assembly 8 is connected to each of the two drive shafts 6. The spring assembly 8 includes a spring guide post 81 fixed on the drive shaft 6, a spring sleeve 82 sleeved on the spring guide post 81, and a compression spring 83 sleeved on the spring guide post 81. A boss 84 is provided on the spring guide post 81. One end of the compression spring 83 abuts against the boss 84, and the other end abuts against the spring sleeve 82.

[0027] Arc-shaped limiting grooves 9 are respectively opened on the first mechanism clamping plate 1 and the second mechanism clamping plate 2 corresponding to the movement trajectory of the drive shaft 6. One end of the drive shaft 6 is housed in the arc-shaped limiting groove 9 of the first mechanism clamping plate 1 and slides in cooperation with the drive groove 31 of the drive wheel 3, while the other end is housed in the arc-shaped limiting groove 9 of the second mechanism clamping plate 2 and slides in cooperation with the output groove 41 of the output shaft 4.

[0028] The operating gear 10 is located between the first mechanism clamping plate 1 and the second mechanism clamping plate 2 and meshes with the drive wheel 3. A handle (not shown in the drawing) is connected to the operating gear 10, and the operating gear 10 has a handle groove 101 for connecting the handle. The gear shaft of the operating gear 10 extends outward through the slot 21 opened on the second mechanism clamping plate 2 and is fixedly fitted with an indicator 11.

[0029] On the second mechanism clamping plate 2, two limiting shafts 12 are symmetrically installed on both sides of the output rotating shaft 4. Each limiting shaft 12 is fitted with a swingable limiting member 13. The second mechanism clamping plate 2 is provided with an abutting protrusion 14 corresponding to the swing path position of the limiting member 13. A torsion spring 15 is also fitted on the limiting shaft 12 to provide a restoring force for the limiting member 13.

[0030] Each spring sleeve 82 has a fixing groove, and a spring shaft 16 is provided in the fixing groove. The first mechanism clamping plate 1 and the second mechanism clamping plate 2 are respectively connected to the corresponding spring sleeve 82 through the spring shaft 16 passing through the fixing groove.

[0031] A motor 17 is fixedly installed on the end of the first mechanism clamping plate 1 that is away from the second mechanism clamping plate 2, and the output shaft end of the motor 17 is connected to the drive wheel 3.

[0032] Four microswitches 18 are symmetrically arranged around the output shaft 4 on the outside of the second mechanism clamp 2.

[0033] This operating mechanism has both electric and manual operating modes. In electric mode, the motor 17 drives the drive wheel 3, while in manual mode, an external tool (such as a handle) directly drives the operating gear 10, thereby driving the drive wheel 3. The electric and manual modes can be switched according to actual needs. When using one mode, it should be ensured that the other mode is in a non-interfering state to ensure the normal operation of the operating mechanism.

[0034] Of course, in addition to the above embodiments, this utility model may have other various embodiments. Without departing from the essential technical solution of this utility model, those skilled in the art can make various corresponding changes and modifications based on this utility model, and these changes or modifications are equivalent to the technical solution in this patent. Therefore, these corresponding changes and modifications should all fall within the protection scope of the appended claims of this utility model.

Claims

1. An operating mechanism for an automatic transfer switch, characterized in that: It includes a drive wheel, an output shaft, a drive shaft, and a central shaft. The drive wheel and the output shaft are coaxially arranged through the central shaft. The drive wheel has two drive slots, and the output shaft has two output slots corresponding to the positions of the drive slots. There are two drive shafts, which are slidably connected to the corresponding drive slots and output slots, respectively. Spring assemblies are connected to both drive shafts.

2. The operating mechanism of the automatic transfer switch according to claim 1, characterized in that: The operating mechanism also includes a motor, the output shaft of which is connected to the drive wheel.

3. The operating mechanism of the automatic transfer switch according to claim 1, characterized in that: The operating mechanism also includes an operating gear that meshes with the drive wheel, and the operating gear has a handle groove for connecting a handle.

4. The operating mechanism of the automatic transfer switch according to claim 1, 2, or 3, characterized in that: The spring assembly includes a spring guide post fixed to the drive shaft, a spring sleeve sleeved outside the spring guide post, and a compression spring sleeved on the spring guide post. The spring guide post is provided with a boss, one end of the compression spring abuts against the boss, and the other end abuts against the spring sleeve.

5. The operating mechanism of the automatic transfer switch according to claim 4, characterized in that: The spring assembly has a first mechanism clamp and a second mechanism clamp on both sides, the drive wheel is located on the outside of the first mechanism clamp, and the output shaft is located on the outside of the second mechanism clamp. The first mechanism clamp and the second mechanism clamp are respectively provided with arc-shaped limiting grooves corresponding to the movement trajectory of the drive shaft. One end of the drive shaft is accommodated in the arc-shaped limiting groove of the first mechanism clamp and is slidably connected to the drive groove of the drive wheel. The other end of the drive shaft is accommodated in the arc-shaped limiting groove of the second mechanism clamp and is slidably connected to the output groove of the output shaft.

6. The operating mechanism of the automatic transfer switch according to claim 5, characterized in that: A rotating arm is connected between the central shaft and each of the two drive shafts.

7. The operating mechanism of the automatic transfer switch according to claim 5, characterized in that: The operating gear is disposed between the first mechanism clamping plate and the second mechanism clamping plate, and meshes with the drive wheel rotatably connected to the outside of the first mechanism clamping plate. The gear shaft of the operating gear extends outside the second mechanism clamping plate through a slot and is fixedly fitted with an indicator.

8. The operating mechanism of the automatic transfer switch according to claim 5, characterized in that: The second mechanism clamping plate has symmetrically installed limiting shafts on both sides of the upper end of the output shaft. Each limiting shaft is fitted with a swingable limiting member. The second mechanism clamping plate has abutting protrusions corresponding to the swing path position of the limiting member. Each limiting shaft is also equipped with a torsion spring.

9. The operating mechanism of the automatic transfer switch according to claim 5, characterized in that: Each spring sleeve has a fixing groove, and a spring shaft is provided in the fixing groove. The first mechanism clamp and the second mechanism clamp are respectively connected to the corresponding spring sleeve through the spring shaft passing through the fixing groove.

10. The operating mechanism of the automatic transfer switch according to claim 5, characterized in that: Four microswitches are symmetrically arranged around the output shaft on the outer side of the second mechanism clamping plate.

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