Spring-closed power switch mechanism

Abstract

This utility model discloses a spring-loaded power switch mechanism, relating to the field of circuit breaker technology. It includes an insulating protective shell, with two fixed seats fixedly mounted on the bottom of the inner wall of the shell. Each of the two fixed seats has a common limiting plate at its top. Two limiting bolts are threaded into the outer wall of the limiting plate. A movable groove is provided between the limiting plate and the two fixed seats. The inner wall of the movable groove is slidably connected to the outer wall of the extension slide plate. The outer wall of the insulating protective shell has a control port and a wiring port. A controller is fixedly mounted on the inner wall of the insulating protective shell. By installing a buffer spring between the extension slide plate and the controller, when the circuit breaker is subjected to external impact, the buffer spring absorbs the impact force during the rotation of the control arm driven by the abutment rod, thus buffering the control arm and effectively preventing the circuit breaker from tripping due to external impacts or interference, improving the stability of the switch in complex environments.

Description

Technical Field

[0001] This utility model relates to the field of circuit breaker technology, and in particular to a spring-pressurized power switch mechanism. Background Technology

[0002] In power systems, circuit breakers, as core components of control and protection circuits, directly affect the stability and safety of the system due to the performance of their switching mechanisms. Traditional power switching mechanisms have the following significant drawbacks: First, they lack anti-interference capabilities, often employing rigid connections and lacking buffer design. When the equipment is subjected to external impacts or vibrations, the control arm is prone to displacement due to the impact force, leading to erroneous circuit breaker tripping, potentially causing circuit interruptions or even expanding the fault range. Second, the tripping response is delayed, relying on manual operation or a single mechanical drive. The displacement of the extended sliding plate cannot be amplified through an effective mechanical structure, and the locking block disengages from the slot slowly, making it difficult to quickly cut off the power supply in case of circuit abnormalities, increasing safety risks. Third, the closing locking is unstable, relying solely on the slot to fix the control arm position without additional mechanical clamping or elastic fixing devices. Under long-term vibration or external force, the locking block is prone to loosening and the control arm to spring back, resulting in unreliable circuit connections and causing faults such as poor contact or overheating. Utility Model Content

[0003] The purpose of this utility model is to provide a spring-pressurized power switch mechanism, which solves the technical problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a spring-pressed power switch mechanism, comprising an insulating protective shell, two fixed seats fixedly disposed at the bottom of the inner wall of the insulating protective shell, the same limiting plate disposed at the top of the two fixed seats, two limiting bolts threaded into the outer wall of the limiting plate, a movable groove provided between the limiting plate and the two fixed seats, and the inner wall of the movable groove slidably connected to the outer wall of the extension slide plate;

[0005] The outer wall of the insulating protective shell has a control port and a wiring port. A controller is fixedly installed on the inner wall of the insulating protective shell. A control switch is installed on the side of the controller near the control port. A stop rod is installed on the side of the controller away from the control port. The end of the stop rod away from the controller is fixedly connected to the outer wall of the extension slide plate. The control switch is plugged into the corresponding control port. A buffer spring is fixedly installed between the extension slide plate and the controller.

[0006] Preferably, the insulating protective shell is provided with a control arm and a limiting ring inside. One end of the control arm is provided with a first extension block, the other end of the control arm is provided with an extension slide plate, the middle part of the control arm is provided with a locking block, and a second extension block is fixedly provided on the outer wall of the first extension block.

[0007] The outer wall of the limiting ring has a limiting groove, the inner wall of the limiting groove has several first slots, the middle of the top outer wall of the limiting ring has a through hole, the top outer wall of the limiting ring is fixedly provided with a connecting seat, the outer wall of the connecting seat has several guide grooves, the guide grooves divide the connecting seat into several equally sized connecting blocks, the top outer wall of each connecting block has an anti-detachment groove, the inner wall of the limiting groove is provided with a linkage plate, the inner wall of the linkage plate is provided with several protrusions, and the outer wall of the linkage plate is fixedly provided with a first extension plate and a second extension plate.

[0008] Preferably, a top plate is fixedly provided on the top of the insulating protective shell, a plate groove is provided in the middle of the top plate, a cover is fixedly provided on the top of the top plate, an end cap is fixedly provided on the top of the cover, and a fixing plate is provided on the outer wall of the end cap for bolt installation and fixing.

[0009] Preferably, a movable seat is movably installed inside the limiting ring. The outer edge of the movable seat has a ring array of several strip-shaped protrusions. Each strip-shaped protrusion corresponds to a guide groove and an anti-detachment groove. A permanent magnet slide is placed on the top of the movable seat. The permanent magnet slide is located inside the end cover. An installation groove is formed inside the top of the permanent magnet slide. An actuator rod is threadedly installed on the top of the movable seat. The actuator rod passes through the installation groove and is detachably fixed to the permanent magnet slide. An electromagnetic coil is sleeved on the outside of the end of the actuator rod located in the installation groove.

[0010] Preferably, a fixing post is fixedly provided at the bottom of the inner wall of the insulating protective shell, a positioning hole is provided on the outer wall of the first extension abutment, the inner wall of the positioning hole is rotatably inserted into the outer wall of the fixing post, the outer wall of the locking block is engaged with the inner wall of the second locking groove, and the outer wall of the second extension abutment abuts against the outer wall of the first extension plate.

[0011] Preferably, the inner wall of the insulating protective shell is fixedly provided with a fixing bolt, and a tension spring is provided between the fixing bolt and the pull groove.

[0012] Preferably, the protrusions correspond one-to-one with the first slots, and the linkage disk and the limiting ring are engaged with the first slots through the protrusions.

[0013] Compared with related technologies, the spring-loaded power switch mechanism provided by this utility model has the following advantages:

[0014] 1. This utility model provides a spring-pressurized power switch mechanism. By setting a buffer spring between the extension slide plate and the controller, when the circuit breaker is subjected to external impact, the buffer spring can absorb the impact force during the rotation of the control arm driven by the abutment rod, thus buffering the control arm and effectively preventing the circuit breaker from tripping due to external impact or interference, thereby improving the stability of the switch in complex environments.

[0015] 2. This utility model provides a spring-pressed power switch mechanism. By using a movable groove to limit the radial displacement of the extension slide plate, it is only allowed to slide along the axial direction of the control arm. Combined with the lever principle, the small sliding of the extension slide plate can be amplified by the lever, so that the locking block can generate a large tangential displacement, thereby quickly disengaging from the second locking groove of the linkage plate. This ensures that the circuit can be quickly tripped in case of circuit abnormality, thus improving fault response efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a partial structural cross-sectional view of the present invention;

[0018] Figure 3 This is a schematic diagram of the structure at the top plate of this utility model;

[0019] Figure 4 This is an exploded view of a portion of the structure at the top plate of this utility model;

[0020] Figure 5 This utility model Figure 4 Enlarged view of the structure at point A in the middle;

[0021] Figure 6 This is a schematic diagram of the control arm structure of this utility model;

[0022] Figure 7 This is a schematic diagram of the structure of the limiting ring of this utility model;

[0023] Figure 8 This is a schematic diagram of the linkage plate structure of this utility model.

[0024] In the diagram: 1. Insulating protective shell; 101. Top plate; 102. Control port; 103. Wiring port; 104. Plate groove; 105. Control arm; 106. Limiting ring; 107. Limiting groove; 108. First slot; 109. Through hole; 110. Connecting seat; 111. Guide groove; 112. Anti-detachment groove; 113. Linkage plate; 114. Protrusion; 115. First extension plate; 116. Second slot; 117. Second extension plate; 118. Pull groove; 119. Tension spring; 20. Fixing bolt; 121. First extended stop block; 122. Positioning hole; 123. Second extended stop block; 124. Locking block; 125. Extended sliding plate; 126. Fixing column; 127. Fixing seat; 128. Limiting bolt; 129. Limiting plate; 130. Movable groove; 2. Cover; 3. End cap; 4. Fixing plate; 5. Permanent magnet slide; 6. Electromagnetic coil; 7. Actuating rod; 8. Movable seat; 9. Controller; 10. Control switch; 11. Stop rod; 12. Buffer spring. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0026] Example 1:

[0027] Please see Figures 1-8 This utility model provides a technical solution: a spring-pressed power switch mechanism, including an insulating protective shell 1. Two fixed seats 127 are fixedly arranged at the bottom of the inner wall of the insulating protective shell 1. The top of the two fixed seats 127 is provided with the same limiting plate 129. Two limiting bolts 128 are threaded into the outer wall of the limiting plate 129. An movable groove 130 is left between the limiting plate 129 and the two fixed seats 127. The inner wall of the movable groove 130 is slidably connected to the outer wall of the extension slide plate 125.

[0028] The outer wall of the insulating protective shell 1 is provided with a control port 102 and a wiring port 103. The inner wall of the insulating protective shell 1 is fixedly provided with a controller 9. A control switch 10 is provided on the side of the controller 9 near the control port 102. A stop rod 11 is provided on the side of the controller 9 away from the control port 102. The end of the stop rod 11 away from the controller 9 is fixedly connected to the outer wall of the extension slide plate 125. The control switch 10 is correspondingly plugged into the control port 102. A buffer spring 12 is fixedly provided between the extension slide plate 125 and the controller 9.

[0029] The insulating protective shell 1 is provided with a control arm 105 and a limiting ring 106 inside. One end of the control arm 105 is provided with a first extension block 121, the other end of the control arm 105 is provided with an extension slide plate 125, the middle part of the control arm 105 is provided with a locking block 124, and the outer wall of the first extension block 121 is fixedly provided with a second extension block 123.

[0030] The outer wall of the limiting ring 106 is provided with a limiting groove 107, the inner wall of the limiting groove 107 is provided with a plurality of first slots 108, the middle of the top outer wall of the limiting ring 106 is provided with a through hole 109, the top outer wall of the limiting ring 106 is fixedly provided with a connecting seat 110, the outer wall of the connecting seat 110 is provided with a plurality of guide grooves 111, the plurality of guide grooves 111 divide the connecting seat 110 into a plurality of equally sized connecting blocks, the top outer wall of each connecting block is provided with an anti-detachment groove 112, the inner wall of the limiting groove 107 is provided with a linkage plate 113, the inner wall of the linkage plate 113 is provided with a plurality of protrusions 114, the outer wall of the linkage plate 113 is fixedly provided with a first extension plate 115 and a second extension plate 117.

[0031] The top of the insulating protective shell 1 is fixedly provided with a top plate 101, the top plate 101 has a plate groove 104 in the middle, the top of the top plate 101 is fixedly provided with a cover 2, the top of the cover 2 is fixedly provided with an end cap 3, the outer wall of the end cap 3 is provided with a fixing plate 4, and the fixing plate 4 is used for bolt installation and fixing.

[0032] The movable seat 8 is movably installed inside the limiting ring 106. The outer edge of the movable seat 8 has a ring array structure with several strip-shaped protrusions. The strip-shaped protrusions correspond one-to-one with the guide groove 111 and one-to-one with the anti-detachment groove 112. A permanent magnet slide 5 is placed on the top of the movable seat 8. The permanent magnet slide 5 is located inside the end cover 3. An installation groove is formed inside the top of the permanent magnet slide 5. An actuator 7 is threadedly installed on the top of the movable seat 8. The actuator 7 passes through the installation groove and is detachably fixed to the permanent magnet slide 5. An electromagnetic coil 6 is sleeved on the outside of the end of the actuator 7 located in the installation groove.

[0033] A fixing post 126 is fixedly installed at the bottom of the inner wall of the insulating protective shell 1. A positioning hole 122 is opened on the outer wall of the first extension abutment 121. The inner wall of the positioning hole 122 is rotatably inserted into the outer wall of the fixing post 126. The outer wall of the locking block 124 is locked into the inner wall of the second locking groove 116. The outer wall of the second extension abutment 123 abuts against the outer wall of the first extension plate 115.

[0034] The inner wall of the insulating protective shell 1 is fixedly provided with fixing bolts 120, and a tension spring 119 is provided between the fixing bolts 120 and the pull groove 118;

[0035] The protrusion 114 corresponds one-to-one with the first slot 108, and the linkage disk 113 and the limit ring 106 are engaged with the first slot 108 through the protrusion 114.

[0036] In this implementation plan,

[0037] When powered on:

[0038] When the electromagnetic coil 6 is energized, it generates a magnetic field that interacts with the permanent magnet slide 5. The permanent magnet slide 5 drives the actuator rod 7 to move upward, thereby lifting the movable seat 8. The strip-shaped protrusion of the movable seat 8 slides from the bottom to the top of the guide groove 111 until it disengages from the through hole 109 of the limit ring 106, releasing the axial constraint on the connecting seat 110. After the movable seat 8 disengages from the through hole 109, it no longer clamps the connecting seat 110 through the strip-shaped protrusion. One end of the tension spring 119 is connected to the fixing bolt 120, and the other end is embedded in the linkage disc 113. The tension spring 119 releases its elastic potential energy through the groove 118, driving the linkage plate 113 to rotate counterclockwise. The linkage plate 113 engages with the first slot 108 of the limiting ring 106 via the protrusion 114, causing the limiting ring 106 to rotate synchronously. When the limiting ring 106 rotates, the guide groove 111 of the connecting seat 110 rotates with it. The strip-shaped protrusion of the movable seat 8 slides from the end of the guide groove 111 into the anti-disengagement groove 112. After the strip-shaped protrusion enters, the movable seat 8 is restricted to the top of the limiting ring 106 and cannot fall axially back. To ensure mechanical locking in the disengaged state, as the linkage plate 113 rotates, the arc surface of the first extension plate 115 gradually approaches the second extension stop 123 of the control arm 105. The purpose of the arc surface design is to convert the circular motion into a radial thrust on the second extension stop 123 through the accumulation of rotation angle, avoiding rigid impact. When the arc surface of the first extension plate 115 abuts against the second extension stop 123, the thrust forces the control arm 105 to rotate clockwise around the fixed post 126, and the locking block 124 in the middle of the control arm 105 rotates accordingly. The movement trajectory is from the outside of the linkage disk 113 to the second slot 116. The inner wall of the second slot 116 is chamfered to facilitate the sliding of the locking block 124. When the locking block 124 is fully embedded in the second slot 116, the rotation of the limit ring 106 is mechanically locked. At this time, the linkage disk 113, the limit ring 106, and the control arm 105 form a rigid connection. After the control arm 105 rotates to the position and the locking is completed, the position of the control arm 105 is fixed to ensure that the circuit is in the connected state and to avoid accidental tripping due to vibration or other factors.

[0039] When the current is abnormal:

[0040] A control port 102 is provided on the outer wall of the insulating protective shell 1. The control switch 10 of the controller 9 is located at the control port 102. When the circuit malfunctions, the control switch 10 can be pressed at the control port 102 to manually trip the circuit breaker, driving the push rod 11 to move towards the extension slide plate 125. The extension slide plate 125 is located in the movable groove 130 formed by the two fixed seats 127 and the limiting plate 129. The movable groove 130 restricts its radial displacement, allowing it to slide only along the axial direction of the control arm 105. The thrust of the push rod 11 forces the extension slide plate 125 to slide within the movable groove 130. When the circuit breaker is subjected to external impact... When the lever 11 rotates, it causes the control arm 105 to rotate slightly. A buffer spring 12 is installed between the lever 11 and the extension slide plate 125. When the lever 11 rotates the control arm 105, the buffer spring 12 is subjected to impact force, which buffers the control arm 105, effectively preventing the circuit breaker from tripping due to external collisions or interference. The control arm 105 rotates around the fixed column 126. The control arm 105 forms a lever structure with the fixed column 126 as the fulcrum. The slight sliding of the extension slide plate 125 can be amplified by the lever, causing the locking block 124 to generate a greater... A large tangential displacement quickly disengages the control arm 105 from the second slot 116 of the linkage plate 113. As the control arm 105 rotates, the locking block 124 slides along the inclined surface of the inner wall of the second slot 116 until it is completely disengaged from the second slot 116, releasing the mechanical connection with the linkage plate 113. As the control arm 105 rotates, the first extended abutment block 121 moves downwards with it. During the rotation of the control arm 105, the second extended abutment block 123 gradually approaches the first extended plate 115 of the linkage plate 113. The end face of the first extended plate 115 is designed as an arc surface. When the second extended abutment block 123 abuts against the first extended plate 115, the control arm 105... The rotational kinetic energy of 05 is transmitted to the first extension plate 115 through the second extension block 123, forcing the linkage disk 113 to rotate clockwise. The linkage disk 113 is engaged with the first slot 108 of the limiting ring 106 through the protrusion 114, so its rotation will drive the limiting ring 106 to rotate synchronously. Since the current is in an abnormal state, the electromagnetic coil 6 is de-energized. As the limiting ring 106 rotates, the strip protrusion of the movable seat 8 slides from the top to the bottom of the guide groove 111 until it falls completely into the through hole 109. At the same time, as the limiting ring 106 rotates, the second extension plate 117 will compress the tension spring 119.

Claims

1. A spring-loaded power switch mechanism, comprising an insulating protective shell (1), characterized in that: The inner wall of the insulating protective shell (1) is fixedly provided with two fixed seats (127) at the bottom. The top of the two fixed seats (127) is provided with the same limiting plate (129). The outer wall of the limiting plate (129) is threaded with two limiting bolts (128). A movable groove (130) is left between the limiting plate (129) and the two fixed seats (127). The inner wall of the movable groove (130) is slidably connected to the outer wall of the extension slide plate (125). The outer wall of the insulating protective shell (1) is provided with a control port (102) and a wire passage (103). The inner wall of the insulating protective shell (1) is fixedly provided with a controller (9). A control switch (10) is provided on the side of the controller (9) near the control port (102). A stop rod (11) is provided on the side of the controller (9) away from the control port (102). The end of the stop rod (11) away from the controller (9) is fixedly connected to the outer wall of the extension slide plate (125). The control switch (10) is inserted into the control port (102). A buffer spring (12) is fixedly provided between the extension slide plate (125) and the controller (9).

2. The spring-loaded power switch mechanism according to claim 1, characterized in that: The insulating protective shell (1) is provided with a control arm (105) and a limiting ring (106) inside. One end of the control arm (105) is provided with a first extension block (121), and the other end of the control arm (105) is provided with an extension slide plate (125). A locking block (124) is provided in the middle of the control arm (105). A second extension block (123) is fixedly provided on the outer wall of the first extension block (121). The outer wall of the limiting ring (106) is provided with a limiting groove (107), and the inner wall of the limiting groove (107) is provided with a plurality of first slots (108). The middle of the top outer wall of the limiting ring (106) is provided with a through hole (109). The top outer wall of the limiting ring (106) is fixedly provided with a connecting seat (110). The outer wall of the connecting seat (110) is provided with a plurality of guide grooves (111). The plurality of guide grooves (111) divide the connecting seat (110) into a plurality of equally sized connecting blocks. The top outer wall of each connecting block is provided with an anti-detachment groove (112). The inner wall of the limiting groove (107) is provided with a linkage plate (113). The inner wall of the linkage plate (113) is provided with a plurality of protrusions (114). The outer wall of the linkage plate (113) is fixedly provided with a first extension plate (115) and a second extension plate (117).

3. The spring-loaded power switch mechanism according to claim 1, characterized in that: The top of the insulating protective shell (1) is fixedly provided with a top plate (101), and a plate groove (104) is opened in the middle of the top plate (101). A cover (2) is fixedly provided on the top of the top plate (101), and an end cap (3) is fixedly provided on the top of the cover (2). A fixing plate (4) is provided on the outer wall of the end cap (3), and the fixing plate (4) is used for bolt installation and fixing.

4. The spring-loaded power switch mechanism according to claim 2, characterized in that: The limiting ring (106) is movably installed with a movable seat (8). The outer edge of the movable seat (8) is arranged in a ring array with several strip-shaped protrusions. The strip-shaped protrusions correspond one-to-one with the guide groove (111) and one-to-one with the anti-detachment groove (112). A permanent magnet slide (5) is placed on the top of the movable seat (8). The permanent magnet slide (5) is located inside the end cover (3). An installation groove is formed inside the top of the permanent magnet slide (5). An actuator (7) is threadedly installed on the top of the movable seat (8). The actuator (7) passes through the installation groove and is detachably fixed to the permanent magnet slide (5). An electromagnetic coil (6) is sleeved on the outside of the end of the actuator (7) located in the installation groove.

5. A spring-loaded power switch mechanism according to claim 2, characterized in that: The inner wall of the insulating protective shell (1) is fixedly provided with a fixing post (126), the outer wall of the first extension abutment (121) is provided with a positioning hole (122), the inner wall of the positioning hole (122) is rotatably inserted into the outer wall of the fixing post (126), the outer wall of the locking block (124) is engaged with the inner wall of the second locking groove (116), and the outer wall of the second extension abutment (123) abuts against the outer wall of the first extension plate (115).

6. The spring-loaded power switch mechanism according to claim 1, characterized in that: The inner wall of the insulating protective shell (1) is fixedly provided with a fixing bolt (120), and a tension spring (119) is provided between the fixing bolt (120) and the pull groove (118).

7. A spring-loaded power switch mechanism according to claim 2, characterized in that: The protrusion (114) corresponds one-to-one with the first slot (108), and the linkage disk (113) and the limiting ring (106) are engaged with the first slot (108) through the protrusion (114).

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