load switch

Abstract

The application belongs to the technical field of electric appliance switch, and discloses a load switch. The load switch comprises a switch mechanism and a limiting mechanism. The switch mechanism is arranged at a preset work station. The switch mechanism comprises an input component and an output component arranged coaxially. The output component has an open position and a closed position. The input component can drive the output component to rotate around the axis of the input component, so that the output component switches between the open position and the closed position. The limiting mechanism can be extended and retracted along a first direction. When the output component is in the open position or the closed position, the limiting end of the limiting mechanism can abut against the outer periphery of the output component, so that the output component cannot rebound. The limiting mechanism can limit and fix the output component, thereby avoiding the problem that the output component is separated from the open position or the closed position, and further ensuring the safety of operation.

Description

Technical Field

[0001] This invention relates to the field of electrical switch technology, and more particularly to a load switch. Background Technology

[0002] A load switch is a type of switching device that falls between a circuit breaker and a disconnector, featuring a simple arc-extinguishing mechanism. The load switch operating mechanism controls the opening and closing of the stationary contacts and is a crucial component of the load switch cabinet. However, in existing technology, load switches are subjected to the tension of an energy storage spring in both the open and closed positions. If the spring tension is excessive, the switch may disengage from its original open or closed position, posing a significant safety risk.

[0003] Therefore, there is an urgent need for a load switch that can be fixed in the open or closed position to ensure that it does not leave its original position, thereby improving the safety of operation. Summary of the Invention

[0004] The purpose of this invention is to provide a load switch that can be fixed in the open or closed position to ensure that it does not move out of its original position, thereby improving the safety of operation.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A load switch, comprising:

[0007] A switching mechanism is set at a preset work position. The switching mechanism includes an input component and an output component arranged coaxially. The output component has an open position and an closed position. The input component can drive the output component to rotate around its own axis so that the output component switches between the open position and the closed position.

[0008] The limiting mechanism is capable of extending and retracting along a first direction. When the output component is in the open position or the closed position, the limiting end of the limiting mechanism can abut against the outer periphery of the output component to prevent the output component from rebounding.

[0009] Preferably, the input component includes an input shaft and a transmission component, the transmission component being disposed on the outer periphery of the input shaft and capable of rotating synchronously with the transmission component; the output component includes an output shaft and a transmission pin, the output shaft having a radially protruding transmission portion, the transmission pin being disposed on the transmission portion, and the transmission component being capable of abutting against and driving the transmission pin to rotate, so that the transmission pin drives the output shaft to rotate.

[0010] Preferably, the outer periphery of the output shaft is provided with two limiting grooves, and when the output shaft is in the open or closed position, the limiting end can abut against one of the limiting grooves.

[0011] Preferably, the limiting groove is a circular semi-groove, and the limiting end is a limiting ball.

[0012] Preferably, the limiting mechanism further includes a limiting seat and an elastic element. The limiting seat forms a limiting channel inside. The elastic element is disposed in the limiting channel, and one end of the elastic element is connected to or abuts against the side of the limiting channel away from the output shaft. The limiting ball is located in the limiting channel and is connected to or abuts against the other end of the elastic element. The elastic force of the elastic element can cause the limiting ball to abut against the outer periphery of the output shaft.

[0013] Preferably, the limiting mechanism further includes a locking member, which is detachably connected to the limiting channel, and the end of the elastic member away from the limiting ball is connected to or abuts against the locking member.

[0014] Preferably, the limiting seat is provided with a plurality of mounting holes, through which the mounting component can detachably connect the limiting seat to the outer periphery of the output component.

[0015] Preferably, the plurality of mounting holes are symmetrically distributed along both sides of the limiting channel.

[0016] Preferably, the outer periphery of the transmission component is provided with two arc-shaped abutment portions, which can alternately abut against and push the transmission pin to switch the output shaft between the open position and the closed position.

[0017] Preferably, a limit shaft is provided at both the open and closed positions, so that when the output shaft rotates to the open or closed position, the transmission part can abut against the limit shaft.

[0018] The beneficial effects of this invention are:

[0019] This invention discloses a load switch. The load switch includes a switching mechanism and a limiting mechanism. The switching mechanism is set at a preset position and includes an input component and an output component coaxially arranged. The output component has an open position and an closed position. The input component can drive the output component to rotate around its own axis, so that the output component switches between the open position and the closed position. The limiting mechanism can extend and retract in a first direction. When the output component is in the open position or the closed position, the limiting end of the limiting mechanism can abut against the outer periphery of the output component to prevent the output component from rebounding.

[0020] The limit mechanism can limit and fix the output component, that is, the limit mechanism can ensure that the output component cannot be disengaged from the open or closed position, thereby solving the problem of output component rebound and ensuring the safety of operation. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the load switch in the closed position provided by the present invention;

[0022] Figure 2 This is a schematic diagram of the load switch in the dead position provided by the present invention;

[0023] Figure 3 This is a schematic diagram of the load switch in the open position provided by the present invention;

[0024] Figure 4 A side view of the load switch provided by the present invention;

[0025] Figure 5 This is a schematic diagram of the structure of the output shaft and the limiting mechanism provided by the present invention;

[0026] Figure 6 This is a schematic diagram of the limiting mechanism provided by the present invention.

[0027] In the picture:

[0028] 10. Switching mechanism; 11. Input assembly; 111. Input shaft; 112. Transmission component; 1121. Arc-shaped contact part; 12. Output assembly; 121. Output shaft; 122. Transmission pin; 123. Transmission part; 124. Limiting groove; 13. Energy storage spring; 14. Rotating shaft;

[0029] 20. Limiting mechanism; 21. Limiting ball; 22. Limiting seat; 221. Mounting hole; 23. Elastic element; 24. Locking element;

[0030] 30. Limiting axis;

[0031] 40. Base; 41. Fixing hole;

[0032] 50. Top slab;

[0033] 60. Support shaft. Detailed Implementation

[0034] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0035] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0036] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0037] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0038] This embodiment provides a load switch, such as Figures 1-4 As shown, the load switch includes a switching mechanism 10 and a limiting mechanism 20. The switching mechanism 10 is set at a preset position and includes an input component 11 and an output component 12 coaxially arranged. The output component 12 has an open position and a closed position. The input component 11 can drive the output component 12 to rotate around its own axis, so that the output component 12 switches between the open position and the closed position. The limiting mechanism 20 can extend and retract in a first direction. When the output component 12 is in the open position or the closed position, the limiting end of the limiting mechanism 20 can abut against the outer periphery of the output component 12, so that the output component 12 cannot rebound. By setting the limiting mechanism 20, the output component 12 can be limited and fixed, that is, the limiting mechanism 20 can ensure that the output component 12 cannot detach from the open position or the closed position, thereby solving the problem of the output component 12 easily rebounding and ensuring the safety of operation.

[0039] It should be noted that existing load switches suffer from drawbacks such as complex structure, large size, and inconvenient operation, making assembly and maintenance difficult. To address this issue, the load switch in this embodiment further includes a base 40 and a top plate 50. The base 40 has multiple fixing holes 41 along its circumference, allowing it to be detachably installed to a preset position using bolts or other structures. The base 40 and the top plate 50 are connected at intervals by support shafts 60, creating a space between them that can accommodate the switch mechanism 10 and the limiting mechanism 20. This ensures no exposed structure, facilitates disassembly and assembly, and makes subsequent maintenance convenient.

[0040] like Figures 1-4 As shown, the input component 11 includes an input shaft 111 and a transmission member 112. The transmission member 112 is disposed on the outer periphery of the input shaft 111 and can rotate synchronously with the input shaft 111. The output component 12 includes an output shaft 121 and a transmission pin 122. The output shaft 121 has a radially protruding transmission part 123, and the transmission pin 122 is disposed on the transmission part 123. The transmission member 112 can abut against and drive the transmission pin 122 to rotate, so that the transmission pin 122 drives the output shaft 121 to rotate through the transmission part 123. This arrangement not only has a simple structure and ensures that the input shaft 111 and the transmission member 112 rotate synchronously, thereby ensuring the driving effect of the transmission member 112 driving the transmission pin 122, but also simplifies the connection structure of the input component 11 and the output component 12, ensuring ease of use and operability.

[0041] It should be noted here that, as Figures 1-3 As shown, in this embodiment, the switching mechanism 10 further includes an energy storage spring 13 and a rotating shaft 14. The rotating shaft 14 is vertically disposed between the base 40 and the top plate 50. One end of the energy storage spring 13 is pivotally connected to the outer periphery of the rotating shaft 14, and the other end is hinged to the outer periphery of the transmission member 112. Figure 1 As shown, the output component 12 is in the closed position, at which time the energy storage spring 13 is in a stretched state. When the input shaft 111 is rotated clockwise, the transmission component 112 will also rotate accordingly. At the same time, the connection end between the transmission component 112 and the energy storage spring 13 will also rotate relative to each other and compress the energy storage spring 13. When the axis of the input shaft 111, the hinge point between the transmission component 112 and the energy storage spring 13, and the pivot point between the energy storage spring 13 and the rotating shaft 14 are all on the same straight line (e.g., Figure 2 As shown), the energy storage spring 13 is in the dead position; as the input shaft 111 continues to rotate, the energy storage spring 13 releases its elastic potential energy, assisting in pushing the transmission component 112, so that the transmission component 112 abuts against and pushes the transmission pin 122 to drive the output shaft 121 to rotate together to the open position. When it is in the open position, the energy storage spring 13 is in the stretched state again (as shown). Figure 4(As shown). Regardless of whether the output component 12 is in the open or closed position, the energy storage spring 13 is in a stretched state, which will tend to cause it to move away from its original position. However, due to the presence of the limit mechanism 20, the rebound problem is well solved, ensuring the performance.

[0042] like Figures 1-4 As shown, the transmission component 112 has a good transmission effect. Two arc-shaped abutment portions 1121 are spaced apart on the outer periphery of the transmission component 112. The transmission pin 122 is located between the two arc-shaped abutment portions 1121. When the input shaft 111 rotates, the two arc-shaped abutment portions 1121 can alternately abut against and push the transmission pin 122, allowing the output shaft 121 to switch between the open and closed positions. The arc-shaped abutment portions 1121 allow for better contact with the outer periphery of the transmission pin 122 and ensure that they do not disengage from the transmission pin 122 during rotation, thus guaranteeing a good opening and closing effect.

[0043] Furthermore, limit shafts 30 are provided at both the open and closed positions. When the output shaft 121 rotates to the open or closed position, the transmission part 123 can abut against the limit shaft 30. This arrangement ensures that after the output shaft 121 rotates to the open or closed position, the limit shaft 30 can prevent the transmission part 123 from continuing to rotate, thereby preventing damage to the equipment connected to the output shaft 121. It also prevents the energy storage spring 13 from being overstretched and fatigued, ensuring operational safety.

[0044] To achieve a better limiting effect, such as Figure 5 The output shaft 121 has two limiting grooves 124 on its outer periphery. When the output shaft 121 is in the open or closed position, the limiting end of the limiting mechanism 20 can abut against one of the limiting grooves 124. This structure can more firmly fix the output end to the output shaft 121, thereby ensuring a stable limiting effect.

[0045] However, this structure makes it inconvenient for the output shaft 121 to rotate; the output end needs to be manually disengaged from the limiting groove 124 before the output shaft 121 can rotate. To solve this problem, such as... Figure 5 and Figure 6As shown, the limiting groove 124 is a circular semi-groove, and the limiting end is a limiting ball 21. During installation, the limiting ball 21 can be directly pressed against the outer circumference of the output shaft 121. When the output shaft 121 rotates, the limiting ball 21 can slide against the outer circumference of the output shaft 121. When rotated to the open or closed position, because the limiting mechanism 20 can extend and retract in the first direction, a part of the limiting ball 21 can automatically enter the circular semi-groove, thus completing the limiting. When it is necessary to switch to another position, as the output shaft 121 rotates, the circular semi-groove can generate a thrust in the first direction to push the limiting ball 21 in the opposite direction. This thrust can cause the limiting mechanism 20 to retract in the first direction and allow the limiting ball 21 to continue sliding against the outer circumference of the output shaft 121 until the other position is switched, at which point the limiting ball 21 falls back into another circular semi-groove, re-establishing the limiting relationship. Not only is the structure simple, but the operation is also convenient, requiring no manual movement of the limiting mechanism 20.

[0046] To simplify the overall structure of the limiting mechanism 20, such as Figure 5 and Figure 6 As shown, the limiting mechanism 20 also includes a limiting seat 22 and an elastic element 23. A limiting channel is formed inside the limiting seat 22. The elastic element 23 is disposed within the limiting channel, with one end connected to or abutting against the side of the limiting channel away from the output shaft 121. A limiting ball 21 is located within the limiting channel and is connected to or abutting against the other end of the elastic element 23. The elastic force of the elastic element 23 allows the limiting ball 21 to abut against the outer periphery of the output shaft 121. The limiting seat 22 ensures the stability of the limiting mechanism 20. Placing the elastic element 23 within the limiting channel allows for elastic exposure, thus better protecting the elastic element 23. Furthermore, the two ends of the elastic element 23 can be either connected or abutted, reducing installation difficulty. The overall structure is simple and produces a good limiting effect, improving operability.

[0047] It should be noted that in this embodiment, the elastic element 23 is a spring. Springs have a simple structure, are inexpensive, and are easy to mass-produce, effectively reducing manufacturing costs. In other embodiments, an automatic telescopic rod can be used instead of a spring.

[0048] Considering that it would be inconvenient to connect the elastic element 23 directly to the inner side of the limiting channel, such as Figure 6As shown, the limiting mechanism 20 also includes a locking member 24, which is detachably connected to the limiting channel. The end of the elastic member 23 away from the limiting ball 21 is connected to or abuts against the locking member 24. That is, one end of the limiting channel is closed by the locking member 24, and the locking member 24 forms a detachable connection with the interior of the limiting channel. This not only facilitates the installation of the elastic member 23 but also makes disassembly and subsequent parts replacement convenient. It is worth noting that in this embodiment, the locking member 24 is a bolt, and the inner wall of the limiting channel is threaded. The bolt can form a threaded connection with the inner wall of the limiting channel, thereby forming a simple and firm detachable connection.

[0049] like Figure 6 As shown, the limiting seat 22 is provided with multiple mounting holes 221, through which the mounting component can be detachably connected to the outer periphery of the output assembly 12. The multiple mounting holes 221 ensure that the limiting seat 22 is securely mounted on the base 40, thereby preventing the limiting ball 21 from wobbling during its sliding contact with the output shaft 121, thus creating a good limiting relationship and ensuring operational safety.

[0050] It should be noted that the mounting components can be any type of structure, such as screws or pins, as long as they are easy to install and disassemble and can create a secure connection. Furthermore, the multiple mounting holes 221 are symmetrically distributed along the two sides of the limiting channel. This structure ensures that the limiting seat 22 is evenly stressed on both sides, thus improving the fixing effect.

[0051] Referring to the accompanying drawings, the operation method of the load switch in this embodiment is described as follows:

[0052] Assuming the load switch is in operation Figure 1 When the circuit is in the indicated closing position, the input shaft 111 must first be rotated clockwise. As the input shaft 111 rotates, it drives the transmission component 112 to rotate as well, gradually compressing the energy storage spring 13. Simultaneously, the limiting groove 124 pushes the limiting ball 21 to compress the elastic element 23 until the limiting ball 21 disengages from the limiting groove 124 and slides against the outer circumference of the output shaft 121. Figure 2 After reaching the dead position, the elastic potential energy of the energy storage spring 13 can assist in pushing the transmission component 112, and cause the transmission component 112 to push the transmission pin 122 to rotate together with the output shaft 121 until the transmission part 123 abuts against the limit shaft 30, at which point the load switch reaches the dead position. Figure 3 In the open position shown, the energy storage spring 13 is stretched again, and the limit ball 21 falls into another limit groove 124, thus limiting and fixing the output shaft 121 again. The process of moving from the open position to the closed position can be achieved by simply reversing the above steps.

[0053] In summary, by using the load switch in this embodiment, the limit mechanism 20 can limit the output shaft 121 at the open or closed position, effectively solving the problem of the output component 12 springing back.

[0054] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A load switch, characterized in that, include: A switching mechanism (10) is set at a preset work position. The switching mechanism (10) includes an input component (11) and an output component (12) arranged coaxially. The output component (12) has an open position and an closed position. The input component (11) can drive the output component (12) to rotate around its own axis so that the output component (12) switches between the open position and the closed position. The limiting mechanism (20) can extend and retract along the first direction. When the output component (12) is in the open position or the closed position, the limiting end of the limiting mechanism (20) can abut against the outer periphery of the output component (12) so that the output component (12) cannot rebound. The input component (11) includes an input shaft (111) and a transmission component (112). The transmission component (112) is disposed on the outer periphery of the input shaft (111) and can rotate synchronously with the transmission component (112). The output component (12) includes an output shaft (121) and a transmission pin (122). The output shaft (121) has a transmission part (123) protruding radially. The transmission pin (122) is disposed on the transmission part (123). The transmission component (112) can abut against and drive the transmission pin (122) to rotate, so that the transmission pin (122) drives the output shaft (121) to rotate. The output shaft (121) has two limiting grooves (124) on its outer periphery. When the output shaft (121) is in the open or closed position, the limiting end can abut against one of the limiting grooves (124). The limiting groove (124) is a circular semi-groove, and the limiting end is a limiting ball (21). The limiting mechanism (20) further includes a limiting seat (22) and an elastic element (23). The limiting seat (22) forms a limiting channel inside. The elastic element (23) is disposed in the limiting channel, and one end is connected to or abuts against the side of the limiting channel away from the output shaft (121). The limiting ball (21) is located in the limiting channel and is connected to or abuts against the other end of the elastic element (23). The elastic force of the elastic element (23) can make the limiting ball (21) abut against the outer periphery of the output shaft (121).

2. The load switch according to claim 1, characterized in that, The limiting mechanism (20) further includes a locking member (24), which is detachably connected to the limiting channel. The end of the elastic member (23) away from the limiting ball (21) is connected to or abuts against the locking member (24).

3. The load switch according to claim 2, characterized in that, The limiting seat (22) is provided with a plurality of mounting holes (221), and the mounting component can detachably connect the limiting seat (22) to the outer periphery of the output component (12) through the mounting holes (221).

4. The load switch according to claim 3, characterized in that, The plurality of mounting holes (221) are symmetrically distributed along both sides of the limiting channel.

5. The load switch according to any one of claims 1-4, characterized in that, The outer periphery of the transmission component (112) is provided with two arc-shaped abutment portions (1121) spaced apart. The two arc-shaped abutment portions (1121) can alternately abut against and push the transmission pin (122) so that the output shaft (121) switches between the open position and the closed position.

6. The load switch according to any one of claims 1-4, characterized in that, Both the open and closed positions are provided with limit shafts (30). When the output shaft (121) rotates to the open or closed position, the transmission part (123) can abut against the limit shaft (30).

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