Anti-offset wiring structure of circuit breaker

Abstract

The utility model discloses a kind of anti-deviation wiring structure of circuit breaker, including shell, wiring frame, pressing sheet, wiring bolt, also be equipped with anti-loose mechanism and anti-deviation mechanism.Anti-deviation mechanism is composed of pressing sheet two sides guide convex rib and wiring frame side wall guide groove, both sliding fit and clearance is 0.1mm-0.5mm, can prevent pressing sheet inclination deviation.Anti-loose mechanism is used to avoid wiring bolt loosening.The structure effectively solves the problem that wiring bolt is easy to loosen in traditional wiring structure, and pressing sheet is easy to deviate, ensures that wire connection is reliable, reduces the hidden danger of poor contact heating, enhances wiring stability, slows down wire insulation layer wear, improves circuit breaker operating safety, service life and practical value.

Description

Technical Field

[0001] This utility model relates to the field of circuit breaker technology, specifically to an anti-offset wiring structure for a circuit breaker. Background Technology

[0002] In power systems, circuit breakers are key devices for controlling and protecting circuits, and the stability and reliability of their wiring structure directly affect the safety and efficiency of power transmission. Traditional circuit breaker wiring structures typically include a housing, terminal block, clamping plates, and connecting bolts. The clamping plates are secured within the terminal block by the threaded connection of the connecting bolts to the screw holes in the terminal block, ensuring a reliable connection of the wires.

[0003] However, the existing wiring structure has significant drawbacks. On the one hand, during long-term use, factors such as vibration and current surges during circuit operation can easily cause the wiring bolts to loosen, leading to poor contact, overheating, and even safety accidents. On the other hand, during the vertical movement of the wiring frame, the pressure plate lacks effective guiding constraints, making it prone to tilting and shifting. This results in uneven stress on the wires, reducing wiring stability and potentially accelerating the wear of the wire insulation, severely impacting the normal performance and service life of the circuit breaker. Therefore, a new circuit breaker wiring structure that can effectively prevent loosening of the wiring bolts and avoid tilting and shifting of the pressure plate is urgently needed. Utility Model Content

[0004] In view of the shortcomings of the prior art, this utility model provides a circuit breaker anti-offset wiring structure.

[0005] The technical solution adopted by this utility model is: a circuit breaker anti-offset wiring structure, including a housing, a wiring frame, a pressure plate and a wiring bolt, wherein the wiring bolt is threadedly connected to the screw hole on the wiring frame, and the top of the wiring bolt passes through the screw hole and extends into the wiring frame to be rotatably connected to the pressure plate. It also includes an anti-loosening mechanism to prevent the wiring bolt from loosening and an anti-offset mechanism to prevent the pressure plate from tilting and offsetting during the up and down movement of the wiring frame.

[0006] The anti-deviation mechanism includes guide protrusions on both sides of the pressure plate and guide grooves on both sides of the wiring frame. The guide protrusions and guide grooves are slidably engaged, and the gap between the guide protrusions and the sidewalls of the guide grooves is 0.1 mm to 0.5 mm.

[0007] Furthermore, the gap between the guide ridge and the sidewall of the guide groove is 0.1 mm to 0.2 mm.

[0008] Furthermore, the cross-section of the guide ridge and guide groove is a dovetail structure.

[0009] Furthermore, the wiring frame is provided with a groove on the end face of the bottom of the pressure plate, and raised positioning shoulders are provided on both sides of the groove. The pressure plate is provided with a protrusion that matches the groove, and positioning concave surfaces that fit into the positioning shoulders are provided on both sides of the protrusion.

[0010] Furthermore, the grooves and protrusions are arc-shaped structures.

[0011] Furthermore, the anti-loosening mechanism includes an anti-loosening screw, the outer wall of the head of the wiring bolt has a plurality of positioning holes arranged in a circular array, the outer shell is provided with a screw hole for screwing into the anti-loosening screw, and the top of the anti-loosening screw has a smooth rod section that can be inserted into the positioning hole.

[0012] The beneficial effects of this utility model are:

[0013] 1. Improved anti-loosening effect: The anti-loosening mechanism reliably prevents the wiring bolts from loosening, ensuring a tight connection between the wiring bolts and the terminal frame. This avoids poor wiring contact caused by loose wiring bolts, eliminating the potential for overheating due to poor contact at its source, and significantly improving the safety of power system operation.

[0014] 2. To improve the anti-deviation effect, the guide protrusions on both sides of the pressure plate slide and engage with the guide grooves on the side walls of the wiring frame, maintaining a reasonable gap distance of 0.1mm-0.5mm. This anti-deviation mechanism provides precise guidance and constraint for the pressure plate during the up-and-down movement of the wiring frame, effectively preventing the pressure plate from tilting or shifting. This ensures uniform stress on the wires during connection, enhances wiring stability, ensures reliable power transmission, slows down the wear rate of the wire insulation layer, extends the service life of the wires, and thus improves the overall performance and durability of the circuit breaker. Furthermore, this structural design is simple and reasonable, easy to process, manufacture, and assemble, and has good practicality and promotional value.

[0015] In addition to the objectives, features, and advantages described above, this utility model has other objectives, features, and advantages. The utility model will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

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

[0017] Figure 2 This is a structural diagram of the wiring frame, pressure plate, and wiring bolts.

[0018] Figure 3 This is a schematic diagram of the anti-loosening screw.

[0019] Figure 1-3In the middle: 1. Outer shell; 2. Wiring frame; 3. Pressure plate; 4. Wiring bolt; 5. Guide ridge; 6. Guide groove; 7. Groove; 8. Positioning shoulder; 9. Protrusion; 10. Positioning concave surface; 11. Anti-loosening screw; 12. Positioning hole; 13. Screw hole; 14. Polished rod section. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0022] This utility model provides an anti-offset wiring structure for a circuit breaker.

[0023] In this embodiment, refer to Figure 1-3 The anti-offset wiring structure of the circuit breaker includes a housing 1, a wiring frame 2, a pressure plate 3, and a wiring bolt 4. The wiring bolt is threadedly connected to the screw hole on the wiring frame. The top of the wiring bolt passes through the screw hole and extends into the wiring frame to be rotatably connected to the pressure plate. It also includes an anti-loosening mechanism to prevent the wiring bolt from loosening and an anti-offset mechanism to prevent the pressure plate from tilting and offsetting during the up and down movement of the wiring frame.

[0024] The anti-deviation mechanism includes guide protrusions 5 on both sides of the pressure plate and guide grooves 6 on both sides of the wiring frame. The guide protrusions 5 and guide grooves 6 are slidably engaged, and the gap between the guide protrusions and the side walls of the guide grooves is 0.1 mm-0.5 mm.

[0025] In the above technical solution, an anti-loosening mechanism and an anti-deviation mechanism are added to the traditional circuit breaker wiring structure. The anti-deviation mechanism restricts the lateral freedom of the pressure plate when it moves up and down in the wiring frame by sliding the guide protrusions on both sides of the pressure plate with the guide grooves on the side wall of the wiring frame; at the same time, the gap between the guide protrusions and the guide grooves is controlled at 0.1mm-0.5mm, which ensures that the pressure plate can move smoothly while avoiding excessive tilting and deviation. The anti-loosening mechanism prevents the wiring bolts from loosening, ensuring the stability of the wiring structure.

[0026] This design effectively solves the problems of loose wiring bolts and tilting / misalignment of pressure plates in traditional wiring structures. The stable movement of the pressure plates and the anti-loosening design of the wiring bolts make the wire connection more reliable, reduce faults such as overheating caused by poor contact, improve the safety and stability of circuit breaker operation, and extend the service life of the equipment.

[0027] Specifically, the gap between the guide ridge and the sidewall of the guide groove is 0.1 mm to 0.2 mm.

[0028] In this embodiment, the gap between the guide ridge and the guide groove is further limited to 0.1mm-0.2mm. A smaller gap provides stronger constraint during tablet movement. More precise gap control enhances the guiding effect and reduces the possibility of slight tilting of the tablet during vertical movement.

[0029] Specifically, the cross-section of the guide ridge and guide groove is a dovetail structure.

[0030] In this embodiment, the guide ridge and guide groove adopt a dovetail cross-section design. The dovetail structure is narrow at the top and wide at the bottom. When the guide ridge slides in the guide groove, the dovetail shape can restrict the guide ridge in multiple directions. Compared with the ordinary rectangular structure, its anti-detachment and anti-tilting effects are better. This structure ensures that the tablet can only move along the direction of the guide groove during the up and down movement, and cannot rotate or deviate in the horizontal direction.

[0031] Specifically, the wiring frame is provided with a groove 7 on the end face of the bottom of the pressure plate, and raised positioning shoulders 8 are provided on both sides of the groove. The pressure plate is provided with a protrusion 9 that matches the groove 7, and positioning concave surfaces 10 that fit into the positioning shoulders are provided on both sides of the protrusion 9.

[0032] In this embodiment, the wiring frame has a groove on the bottom end face of the pressure plate, and positioning shoulders are provided on both sides of the groove. The pressure plate is provided with corresponding protrusions and positioning concave surfaces that fit the groove. During installation, the protrusions are embedded in the groove to press and fix the wires in the groove, while the positioning shoulders cooperate with the positioning concave surfaces to position and limit the pressure plate in the horizontal direction, further restricting the degree of freedom of movement of the pressure plate in the wiring frame and preventing it from shifting or rotating in the horizontal direction.

[0033] Specifically, the grooves and protrusions are arc-shaped structures.

[0034] In this embodiment, the groove and protrusion are designed as arc-shaped structures. Compared with straight structures, arc-shaped structures can better disperse pressure and reduce stress concentration during the cooperation between the pressure plate and the wiring frame.

[0035] Specifically, the anti-loosening mechanism includes an anti-loosening screw 11, a plurality of positioning holes 12 are arranged in a circular array on the outer wall of the head of the wiring bolt, a screw hole 13 is provided on the outer shell for screwing the anti-loosening screw, and the top of the anti-loosening screw has a smooth rod section 14 that is inserted into the positioning hole.

[0036] In this embodiment, the anti-loosening mechanism uses an anti-loosening screw. The outer wall of the bolt head has a circumferential array of positioning holes, and the outer casing has screw holes for screwing the anti-loosening screw. The smooth section at the top of the anti-loosening screw can be inserted into the positioning holes. After the bolt is installed in place, tightening the anti-loosening screw causes the smooth section to insert into the positioning holes, restricting the bolt's rotational freedom and preventing it from loosening under the influence of vibration or other factors.

[0037] Attention all technical personnel: Although this utility model has been described according to the specific embodiments above, the concept of this utility model is not limited to this utility model. Any modification that utilizes the concept of this utility model will be included within the scope of protection of this patent right.

Claims

1. A circuit breaker anti-offset wiring structure, comprising a housing, a wiring frame, a pressure plate, and a wiring bolt, wherein the wiring bolt is threadedly connected to a screw hole on the wiring frame, and the top of the wiring bolt passes through the screw hole and extends into the wiring frame to be rotatably connected to the pressure plate, characterized in that: It also includes an anti-loosening mechanism to prevent the wiring bolts from loosening and an anti-offset mechanism to prevent the pressure plate from tilting or shifting during the up-and-down movement of the wiring frame; The anti-deviation mechanism includes guide protrusions on both sides of the pressure plate and guide grooves on both sides of the wiring frame. The guide protrusions and guide grooves are slidably engaged, and the gap between the guide protrusions and the sidewalls of the guide grooves is 0.1 mm to 0.5 mm.

2. The anti-walk bonding structure of a circuit breaker according to claim 1, characterized by: The gap between the guide protrusion and the sidewall of the guide groove is 0.1 mm to 0.2 mm.

3. The anti-walk bonding structure of a circuit breaker according to claim 1, characterized by: The cross-sections of the guide ridge and guide groove are dovetail structures.

4. The anti-offset wiring structure of the circuit breaker according to claim 1, characterized in that: The wiring frame has a groove on the end face of the bottom of the pressure plate, and raised positioning shoulders are provided on both sides of the groove. The pressure plate has a protrusion that matches the groove, and positioning concave surfaces that fit into the positioning shoulders are provided on both sides of the protrusion.

5. The anti-walk bonding structure of a circuit breaker according to claim 4, characterized by: The grooves and protrusions are arc-shaped structures.

6. The anti-walk connection structure of a circuit breaker according to any one of claims 1 to 5, characterized by: The anti-loosening mechanism includes an anti-loosening screw, and the outer wall of the head of the wiring bolt has a plurality of positioning holes arranged in a circular array. The outer shell is provided with a screw hole for screwing the anti-loosening screw, and the top of the anti-loosening screw has a smooth rod section that can be inserted into the positioning hole.

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