A quick guide positioning assembly and circuit breaker

Abstract

The application provides a quick guide positioning assembly and a circuit breaker, and relates to the technical field of electrical equipment. The quick guide positioning assembly comprises a mounting seat and a guide shaft. The mounting seat is provided with a mounting hole, and the mounting hole is provided with a first guide part. The outer wall of the guide shaft is provided with a second guide part. During the process that the guide shaft is inserted into the mounting hole, the first guide part and the second guide part abut and slide to guide and limit the guide shaft in the mounting hole. One of the first guide part and the second guide part is a guide protrusion, and the other is a guide sliding groove. The safety door assembly is movably arranged on the guide shaft, so that the straight motion track of the safety door assembly can be maintained during the push-pull operation, the quick installation is realized, and the risk of jamming is reduced.

Description

Technical Field

[0001] This invention relates to the field of electrical equipment technology, and more specifically, to a fast-guided positioning component and a circuit breaker. Background Technology

[0002] Drawer-type circuit breakers are widely used in low-voltage power distribution systems. Their structure typically includes a movable circuit breaker body and a drawer base (base) fixedly installed inside the switch cabinet. A safety door panel is installed on the front to shield live contacts and ensure operational safety. The safety door panel is generally connected to the base via a support shaft, which enables rotational or sliding opening and closing functions.

[0003] However, due to limited internal space, unreasonable structural layout, or lax control over machining tolerances in existing circuit breaker bases, the support shaft is difficult to align or insert smoothly during assembly, increasing assembly difficulty. Operators often need to repeatedly adjust the angle or apply significant external force, which not only reduces assembly efficiency but also easily causes deformation of the support shaft, wear of the hole wall, or even cracking of the base, affecting product consistency and reliability.

[0004] Furthermore, this problem is particularly pronounced during mass production or on-site maintenance and replacement, increasing labor costs and rework rates. Therefore, it is urgent to optimize the installation structure of drawer-type circuit breakers, rationally arrange the base hole positions, improve assembly guidance, and enhance the ease of installation and structural stability of the safety door panel. Summary of the Invention

[0005] The purpose of this invention is to provide a fast-guided positioning component and a circuit breaker that can solve the above problems.

[0006] The embodiments of the present invention are implemented as follows:

[0007] In a first aspect, the present invention provides a rapid guiding and positioning component, comprising:

[0008] The base has a mounting hole, and a first guide portion is provided inside the mounting hole;

[0009] A guide shaft has a second guide portion on its outer wall. During the process of the guide shaft passing through the mounting hole, the first guide portion and the second guide portion abut and slide together to guide and limit the guide shaft in the mounting hole. One of the first guide portion and the second guide portion is a guide protrusion and the other is a guide groove.

[0010] The quick guide positioning assembly also includes a bushing, which is movably fitted onto the guide shaft. The bushing is provided with a limiting part. The bushing is used to install the component to be installed, and the limiting part is used to prevent the component to be installed from falling off the bushing.

[0011] The guide shaft has a snap-fit ​​portion at its end away from the base, and the inner wall of the bushing has an anti-detachment portion. The snap-fit ​​portion is movably disposed within the bushing, and the anti-detachment portion is used to abut against the snap-fit ​​portion to prevent the snap-fit ​​portion from falling off the bushing.

[0012] In an optional embodiment, the guide groove is formed by two opposing guide walls, both of which are inclined along the axial direction, and the guide protrusion is used to abut against and slide against the side wall of the guide groove.

[0013] In an optional embodiment, the two guide walls are spaced apart at one end where the distance between them gradually decreases along the axial direction to form a limiting opening, and the guide protrusion is engaged with the limiting opening.

[0014] In an optional embodiment, the end of the guide protrusion is provided with an inclined first guide portion, which is engaged with the limiting opening.

[0015] In an optional embodiment, the outer diameter of the guide shaft near the base is smaller than the outer diameter of the section of the guide shaft where the limiting opening is located; the inner diameter of the mounting hole is adapted to the outer diameter of the guide shaft.

[0016] In an optional embodiment, the mounting hole includes a first channel and a second channel that are connected together. The first guide portion is disposed in the second channel. The inner diameter of the first channel is smaller than the inner diameter of the second channel. The guide shaft includes a first segment, a second segment, and a third segment connected in sequence. The outer diameter of the first segment is smaller than the outer diameter of the second segment. The second guide portion is disposed in the second segment. The third segment is used to install the component to be installed.

[0017] In an optional embodiment, the quick guide positioning assembly further includes a fastener, the first segment passing through the first channel and threadedly engaged with the fastener, and the end of the first segment being provided with an inclined second guide portion.

[0018] In an optional embodiment, the mounting hole further includes a third channel, wherein the first channel, the third channel, and the second channel are connected in sequence, and the inner diameter of the third channel gradually decreases in the axial direction from the second channel toward the first channel.

[0019] The guide shaft further includes a fourth segment, and the first segment, the fourth segment, the second segment and the third segment are connected in sequence, with the outer diameter of the fourth segment gradually decreasing in the axial direction from the second segment to the first segment;

[0020] The fourth segment is located in the third channel.

[0021] In an optional embodiment, the outer wall of the guide shaft is provided with a guide groove, and the inner wall of the bushing is also provided with a guide block, and the guide groove and the guide block are slidably engaged.

[0022] In an optional embodiment, the outer wall of the guide shaft is provided with a limiting opening. When the quick guide positioning assembly is installed, the guide protrusion is engaged in the limiting opening, and the guide protrusion, the limiting opening, the guide groove, and the guide block are located in the same circumference of the guide shaft.

[0023] In a second aspect, the present invention provides a circuit breaker including a safety door assembly and a quick-guide positioning assembly as described in any of the foregoing embodiments, wherein the safety door assembly is movably disposed on the bushing of the quick-guide positioning assembly.

[0024] In an optional embodiment, the quick guide positioning assembly includes a bushing that is movably fitted onto the guide shaft. The bushing is provided with a limiting portion, and the safety door assembly is movably disposed on the bushing via the bushing. The limiting portion is used to limit the safety door assembly to prevent the safety door assembly from falling off the bushing.

[0025] In an optional embodiment, the safety door assembly is provided with a bushing hole and a clearance opening;

[0026] The limiting part includes a first fixing part and a second fixing part, the first fixing part and the second fixing part protruding from the outer wall of the bushing;

[0027] The bushing passes through the bushing hole, and the clearance opening is used for the first fixing part to pass through, so that the safety door assembly is located between the first fixing part and the second fixing part.

[0028] In an optional embodiment, the circuit breaker further includes a circuit breaker body, a transmission assembly, and a second reset element;

[0029] The safety door assembly includes a first door body and a second door body. The first door body is movably disposed on the base, and the second door body is movably disposed on the first door body. The first door body is provided with a first through hole, and the second door body is provided with a second through hole.

[0030] A transmission assembly, comprising a transmission member and a first reset member, wherein the transmission member is movably disposed on the base and connected to the second door body, the transmission member being used to drive the second door body to move under the drive of the circuit breaker body, so that the first through hole and the second through hole correspond, and to drive the first door body and the second door body to move synchronously, the first reset member being connected to the transmission member and being used to drive the transmission member to reset after the force exerted by the circuit breaker body on the transmission member is removed;

[0031] The second reset member is disposed on the base and is used to drive the first door and the second door to reset when the force exerted by the circuit breaker body on the transmission member is removed.

[0032] In an optional embodiment, the safety door assembly further includes a connector. The first door body is provided with a first connecting hole, and the second door body is provided with a second connecting hole. The connector passes through the first connecting hole and the second connecting hole. The second connecting hole has an oblong hole structure. The second door body can move along the extension direction of the second connecting hole under the drive of the transmission member, so that the first through hole and the second through hole correspond.

[0033] In an optional embodiment, the end of the guide shaft away from the base is provided with a snap-fit ​​portion, and the inner wall of the bushing is provided with an anti-detachment portion. The snap-fit ​​portion includes at least two spaced-apart buckles, each buckle being provided with an inclined abutment wall and a limiting wall. The guide shaft passes through the bushing. The anti-detachment portion abuts against the abutment wall to deform at least two of the buckles, allowing the snap-fit ​​portion to pass through the anti-detachment portion. The limiting wall abuts against the anti-detachment portion to prevent the snap-fit ​​portion from falling off the anti-detachment portion.

[0034] The second reset member is sleeved on the guide shaft, and one end of the second reset member abuts against the base, and the other end abuts against the anti-detachment part.

[0035] In an optional embodiment, the guide shaft is provided with a limiting opening and a guide groove, the guide protrusion is engaged with the limiting opening, and the inner wall of the bushing is also provided with a guide block, the guide groove and the guide block are slidably engaged;

[0036] The limiting opening, the guide groove, the guide block, and the clearance opening are located in the same circumference of the guide shaft, and the circumference of the first fixing part relative to the bushing is perpendicular to the circumference of the clearance opening relative to the bushing hole.

[0037] The beneficial effects of the quick-guide positioning assembly and circuit breaker provided in this invention include: a first guide portion is disposed within the mounting hole on the mounting base, while a second guide portion is provided on the outer wall of the guide shaft. During the process of the guide shaft passing through the mounting hole, the first guide portion and the second guide portion abut against each other and form a sliding fit. Here, one of the first guide portion and the second guide portion is a guide protrusion, and the other is a corresponding guide groove; the two constitute a directional guiding and limiting fit structure. This design allows the guide shaft to smoothly advance along a preset path when inserted into the mounting hole, avoiding assembly difficulties or loosening of the connection due to skewness or rotation. During this process, the contact surface between the guide protrusion and the guide groove continuously transmits positioning information, ensuring that the guide shaft enters the installation position with the correct spatial posture. After it is in place, the anti-rotation function is achieved through the anti-rotation cooperation between the two, thereby achieving rapid installation and reducing the risk of jamming. In addition, by setting a snap-fit ​​part on the guide shaft and setting an anti-disengagement part on the bushing, when the bushing slides away from the base to the limit position, its internal anti-disengagement part will axially abut against the snap-fit ​​part to form a mechanical stop, preventing the bushing from continuing to move outward, thereby effectively constraining its range of motion and ensuring that it always stays within the preset track. Attached Figure Description

[0038] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0039] Figure 1 This is a schematic diagram of a circuit breaker structure provided in an embodiment of the present invention;

[0040] Figure 2 An exploded view of the mounting base provided in an embodiment of the present invention;

[0041] Figure 3 This is a schematic diagram of the base structure provided in an embodiment of the present invention;

[0042] Figure 4 This is a schematic diagram of the mounting base structure provided in an embodiment of the present invention;

[0043] Figure 5 This is a partially enlarged structural diagram of the mounting base provided in an embodiment of the present invention from a first-view perspective;

[0044] Figure 6 This is a partially enlarged structural diagram of the mounting base provided in an embodiment of the present invention from a second perspective;

[0045] Figure 7 This is a schematic diagram of the side plate structure provided in an embodiment of the present invention;

[0046] Figure 8 This is a schematic diagram of the transmission component structure provided in an embodiment of the present invention;

[0047] Figure 9 This is a schematic diagram of the first and second gate structures provided in an embodiment of the present invention;

[0048] Figure 10 This is a schematic diagram of the safety door assembly structure provided in an embodiment of the present invention;

[0049] Figure 11 This is a schematic diagram of the base structure from another perspective provided in an embodiment of the present invention;

[0050] Figure 12 This is a schematic diagram of the assembly of the base and guide shaft provided in an embodiment of the present invention;

[0051] Figure 13 This is a schematic diagram of the mounting hole structure provided in an embodiment of the present invention;

[0052] Figure 14 This is a cross-sectional view of the mounting holes provided in an embodiment of the present invention;

[0053] Figure 15 This is a schematic diagram of the guide shaft structure provided in an embodiment of the present invention;

[0054] Figure 16 This is a schematic diagram of the bushing structure from a first perspective provided in an embodiment of the present invention;

[0055] Figure 17 This is a schematic diagram of the bushing structure from a second perspective, provided in an embodiment of the present invention.

[0056] Icons: 10-Circuit breaker; 100-Base; 110-Mounting seat; 111-Positioning groove; 112-Opening; 113-First fixing hole; 114-Positioning block; 115-Mounting hole; 1151-First channel; 1152-Second channel; 1153-Third channel; 116-First guide part; 117-First guide part; 118-Extension groove; 120-Side plate; 121-Positioning part; 122-First... 123-Third fixing hole; 124-Slot; 125-Sliding groove; 1251-Mounting section; 1252-Sliding section; 130-Base; 140-Mounting beam; 141-Fourth fixing hole; 142-Positioning hole; 200-Circuit breaker body; 300-Safety door assembly; 310-First door body; 311-First through hole; 312-First connecting hole; 320-Second door body; 321-Second... 322 - Through hole; 323 - Connecting part; 330 - Second connecting hole; 340 - Connecting member; 350 - Bushing hole; 400 - Clearance opening; 410 - Transmission assembly; 411 - Actuating part; 412 - Actuating part; 413 - Rotating part; 414 - Holding part; 415 - Abutting part; 416 - Limiting part; 420 - First reset member; 430 - Sliding member; 500 - Second reset member; 600 - Guide Shaft; 610-Second guide part; 611-Guide wall; 612-Limiting opening; 620-First section; 621-Second guide part; 630-Second section; 640-Third section; 641-Snap-fit ​​part; 642-Guide groove; 643-Snap-fit; 644-Abutting wall; 645-Limiting wall; 650-Fourth section; 700-Shaft sleeve; 710-Anti-detachment part; 720-First fixing part; 730-Second fixing part. Detailed Implementation

[0057] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0058] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0059] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0060] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use. They are only for the convenience of describing this invention and simplifying the description, 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, and therefore should not be construed as a limitation of this invention. In addition, the terms "first," "second," "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0061] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0062] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0063] Drawer-type circuit breakers are widely used in low-voltage power distribution systems. Their structure typically includes a movable circuit breaker body and a drawer base fixedly installed inside a switch cabinet. A safety door panel is installed on the front to shield live contacts and ensure operational safety. The safety door panel is generally connected to the base via a support shaft, which enables rotational or sliding opening and closing functions.

[0064] However, due to limited internal space, unreasonable structural layout, or lax control over machining tolerances in existing circuit breaker bases, the support shaft is difficult to align or insert smoothly during assembly, increasing assembly difficulty. Operators often need to repeatedly adjust the angle or apply significant external force, which not only reduces assembly efficiency but also easily causes deformation of the support shaft, wear of the hole wall, or even cracking of the base, affecting product consistency and reliability.

[0065] Therefore, it is urgent to optimize the installation structure of drawer-type circuit breakers, rationally arrange the position of base holes and improve assembly guidance, and enhance the ease of installation and structural stability of safety door panels.

[0066] Please see Figures 1 to 17This invention provides a circuit breaker 10, including a quick-guide positioning assembly, a circuit breaker body 200, a safety door assembly 300, a transmission assembly 400, and a second reset member 500. The quick-guide positioning assembly includes a base 100, a guide shaft 600, and a bushing 700. The circuit breaker body 200 is detachably inserted into the base 100, and the safety door assembly 300, the transmission assembly 400, and the second reset member 500 are all disposed on the base 100.

[0067] The base 100 includes a mounting base 110, two side plates 120 and a base 130. The two side plates 120 are arranged opposite each other and their bottom ends are connected to the base 130. The bottom end of the mounting base 110 is connected to the base 130 and its two sides are connected to the two side plates 120 respectively, thereby forming a drawer-type structure that can accommodate the circuit breaker body 200.

[0068] In detail, the mounting base 110 has positioning grooves 111 and openings 112 on both side walls, and positioning parts 121 are provided on the inner side wall of the side plate 120. During the installation process, as shown in the figure, the mounting base 110 is installed vertically downward between the two side plates 120, and the positioning parts 121 on the two side plates 120 are respectively inserted into the positioning grooves 111 through the openings 112 on both sides of the mounting base 110, thereby realizing the installation and positioning of the mounting base 110 and the side plate 120.

[0069] Optionally, the positioning part 121 may be a screw, bolt or other component.

[0070] Furthermore, the two side walls of the mounting base 110 are provided with first fixing holes 113, and the side plate 120 is provided with second fixing holes 122. The first fixing holes 113 and the positioning groove 111 are located on the same straight line. Therefore, when the positioning part 121 is embedded in the positioning groove 111, the first fixing holes 113 and the second fixing holes 122 can be set in correspondence. At this time, by fixing the positioning part 121 in the first fixing holes 113 and the second fixing holes 122, the mounting base 110 and the side plate 120 can be stably installed.

[0071] Of course, in other embodiments of the present invention, such as Figure 3 As shown, the positioning groove 111 is also provided with an extension groove 118 that communicates with the positioning groove 111 and extends vertically upward. This structure is suitable for the mounting base 110 to be installed horizontally. Specifically, after the positioning part 121 of the side plate 120 is inserted into the positioning groove 111 through the opening 112, the mounting base 110 can be subjected to gravity so that the positioning part 121 is further inserted into the extension groove 118. This not only achieves the installation and positioning of the mounting base 110, but also plays a preliminary limiting and fixing role for the mounting base 110, so as to facilitate the subsequent installation of fasteners on the first fixing block and the second fixing hole 122.

[0072] Furthermore, the base 100 also includes a mounting beam 140, the two ends of which are respectively connected to two side plates 120, and there is at least one mounting beam 140. The mounting beam 140 is also connected to the end of the mounting seat 110 near the base 130, or to the end of the mounting seat 110 away from the base 130, or two mounting beams 140 are respectively connected to the two ends of the mounting seat 110, thereby enhancing the overall structural strength and installation stability of the base 100 through the mounting beam 140.

[0073] Specifically, the side plate 120 is provided with a third fixing hole 123, and the mounting beam 140 is provided with a fourth fixing hole 141. By aligning the fourth fixing hole 141 of the mounting beam 140 with the third fixing hole 123, and installing fasteners in the third fixing hole 123 and the fourth fixing hole 141, the side plate 120 and the mounting beam 140 are securely connected.

[0074] Furthermore, to facilitate the installation of the mounting beam 140, a positioning block 114 is protruding from the side wall of the mounting base 110, and the mounting beam 140 is provided with a positioning hole 142. When the mounting beam 140 is installed on one side of the mounting base 110, the positioning block 114 is aligned with the positioning groove 111 to fit, thereby making the mounting beam 140 securely installed on the mounting base 110 and positioning the mounting base 110. At this time, the third fixing hole 123 of the mounting beam 140 corresponds to the fourth fixing hole 141 of the side plate 120, thereby improving the ease of installation.

[0075] Furthermore, the security door assembly 300 includes a first door body 310 and a second door body 320. The first door body 310 is movably disposed on the base 100, and the second door body 320 is movably disposed on the first door body 310. The first door body 310 is provided with a first through hole 311, and the second door body 320 is provided with a second through hole 321.

[0076] The transmission assembly 400 includes a transmission member 410 and a first reset member 420. The transmission member 410 is movably disposed on the base 100 and connected to the second door 320. The transmission member 410 is used to drive the second door 320 to move under the drive of the circuit breaker body 200 so that the first through hole 311 and the second through hole 321 correspond, and drive the first door 310 and the second door 320 to move synchronously. The first reset member 420 is connected to the transmission member 410 and is used to drive the transmission member 410 to reset after the force of the circuit breaker body 200 on the transmission member 410 is removed.

[0077] The second reset member 500 is disposed on the base 100 and is used to drive the first door 310 and the second door 320 to reset when the force exerted by the circuit breaker body 200 on the transmission member 410 is removed.

[0078] It is worth mentioning that the transmission component 410 is movably mounted on the side plate 120 of the base 100 and connected to the second door body 320. During the insertion of the circuit breaker body 200, it is pushed by the transmission component, causing the second door body 320 to move relative to the first door body 310. This gradually aligns the first through hole 311 with the second through hole 321, completing the initial opening of the safety door. Furthermore, the transmission component 410 also participates in the subsequent synchronous displacement of the entire door body. After the through holes are aligned, it continues to drive the first door body 310 and the second door body 320 to move backward together, thus fully opening the passage for the circuit breaker body 200 to enter. This allows the wiring terminals to pass through the first through hole 311 and the second through hole 321 and make contact with the contact bridge of the circuit breaker body 200.

[0079] After the circuit breaker body 200 is pulled out and the force on the transmission component 410 is removed, the first reset component 420 can drive the transmission component 410 to return to its initial position, and the second reset component 500 can also drive the first door body 310 and the second door body 320 to return to their initial positions, thereby ensuring the repeatability and stability of the transmission path.

[0080] With this design, the first reset component 420 completes the repositioning of the transmission component 410, ensuring the consistency of the manual or automatic triggering conditions for the next insertion; and the second reset component 500 directly drives the entire door to close, thereby ensuring that the first door 310 and the second door 320 can be reliably closed, avoiding the risk that the safety door assembly 300 will fail to close due to a single point of failure.

[0081] In detail, when the circuit breaker body 200 moves forward and inserts into the base 100, its front end first contacts the actuating part 412 of the transmission member 410 and applies a pushing force. This pushing force causes the transmission member 410 to rotate, and then drives the second door body 320 to move along a preset direction through the toggle part 411, adjusting the second through hole 321 on it to correspond with the first through hole 311 on the first door body 310. As the circuit breaker body 200 continues to move forward, the transmission member 410 further pushes the sliding member 430, so as to directly drive the safety door assembly 300 to move backward as a whole through the toggle part 411, realizing the full stroke opening of the door body.

[0082] Optionally, the first reset member 420 and the second reset member 500 may be elastic members such as torsion springs or tension springs. During this period, the first reset member 420 is compressed or stretched to store elastic potential energy, while the second reset member 500 is also compressed or stretched to store elastic potential energy.

[0083] Therefore, during the retraction of the circuit breaker body 200, the aforementioned force is released, and the first reset member 420 releases energy to reset the transmission member 410, thereby driving the second safety door to reset to the position where the first through hole 311 and the second through hole 321 are misaligned. Similarly, the second reset member 500 releases stored energy, directly pulling or pushing the first door body 310 and the second door body 320 back to their original closed position, thus completing the automatic closing of the safety door.

[0084] Therefore, by setting up two independent but cooperative reset systems—the first reset component 420 acting on the transmission component 410 and the second reset component 500 acting on the safety door assembly 300—decoupling control of the transmission mechanism and the actuator during the reset process is achieved. This not only improves transmission stability but also increases the response speed of the safety door assembly 300. Furthermore, because the second door body 320 moves relative to the overall displacement to align the through holes, it avoids structural jamming or wear that might occur from forced insertion, thus improving the smoothness and lifespan of the mechanism.

[0085] Based on the above design, the circuit breaker 10 provided in this embodiment of the invention exhibits good automation characteristics in the insertion and removal operation, and can realize the orderly opening and reliable closing of the safety door without manual intervention, effectively preventing the risk of live work; at the same time, by aligning the through hole and moving the whole back step by step, the movement trajectory is optimized, the required operating force is reduced, and the user experience is improved.

[0086] Furthermore, the transmission assembly 400 also includes a slider 430, the transmission member 410 is rotatably disposed on the slider 430, the slider 430 is movably disposed on the base 100, and the first reset member 420 is disposed on the slider 430 and connected to the transmission member 410.

[0087] It should be noted that the slider 430 is movably disposed on the side plate 120 of the base 100, providing the entire transmission assembly 400 with a movement path that translates toward or away from the safety door assembly 300.

[0088] Specifically, the side plate 120 is provided with a sliding groove 125, which includes a connected mounting section 1251 and a sliding section 1252. The size of the mounting section 1251 is larger than the size of the sliding section 1252, so that the sliding member 430 can be installed from the mounting section 1251 to the sliding section 1252 and can be movably disposed in the sliding section 1252.

[0089] In this embodiment, when the circuit breaker body 200 abuts against the transmission member 410, the transmission member 410 is first driven to rotate relative to the sliding member 430, so as to drive the second door body 320 to move relative to the first door body 310 through the transmission member 410, thereby realizing the correspondence between the first through hole 311 and the second through hole 321.

[0090] After the first through hole 311 and the second through hole 321 are opened, the transmission component 410 can drive the sliding component 430 to slide under the abutment action of the circuit breaker body 200, thereby driving the second door body 320 and the first door body 310 to move synchronously through the transmission component 410.

[0091] It is worth mentioning that, in order to ensure the stability of the displacement of the first door body 310 and the second door body 320, the circuit breaker body 200 also directly or indirectly abuts against the first door body 310, that is, the first door body 310 and the second door body 320 are moved together by the transmission component 410 and the circuit breaker body 200.

[0092] In detail, the transmission member 410 is provided with a toggle part 411, an actuation part 412, and a rotation part 413. The toggle part 411 and the actuation part 412 are both connected to the rotation part 413. The rotation part 413 is rotatably disposed on the sliding member 430. The toggle part 411 is connected to the second door body 320. When the actuation part 412 abuts against the circuit breaker body 200, the actuation part 412 drives the toggle part 411 to rotate around the rotation part 413, so as to drive the second door body 320 to move relative to the first door body 310.

[0093] Specifically, when the actuator 412 comes into contact with the circuit breaker body 200, the actuator 412 is subjected to a reverse force and becomes the lever arm of the rotational motion, thereby driving the entire transmission component 410 to rotate around the rotating part 413. This allows the force borne by the actuator 412 to be efficiently transmitted to the actuating part 411 through the rigid connection path, thereby causing the actuating part 411 to produce a corresponding swing displacement.

[0094] Since the actuating part 411 is connected to the second door body 320, during the rotation of the actuating part 411 around the rotating part 413, its output end generates a linear push-pull action to drive the second door body 320 to move relative to the first door body 310.

[0095] In order to ensure that after the actuating part 412 drives the second door body 320 to move so that the first through hole 311 and the second through hole 321 are aligned, the sliding part 430 is driven to move through the transmission part 410, the transmission part 410 is also provided with a retaining part 414. The retaining part 414 is connected to the rotating part 413. The side plate 120 of the base 100 is provided with a slot 124. The retaining part 414 is engaged with the slot 124 to restrict the movement of the sliding part 430.

[0096] When the actuator 412 comes into contact with the circuit breaker body 200, the actuator 412 also causes the retaining part 414 to disengage from the slot 124, so that the sliding member 430 can slide relative to the side plate 120 of the base 100; and after the retaining part 414 disengages from the slot 124, during the sliding process of the sliding member 430 relative to the side plate 120 of the base 100, the retaining part 414 also slides and engages with the side plate 120 of the base 100.

[0097] In detail, when the actuator 412 comes into contact with the circuit breaker body 200, the actuator 412, as the starting point of the force, drives the transmission member 410 to rotate around the rotating part 413. Therefore, while the actuator 412 drives the toggle part 411 to rotate and drive the second door body 320 to move, the holding part 414 also deflects with the rotation of the transmission member 410, so that the holding part 414 gradually exits the slot 124 during the rotation, realizing the disengagement action between the two.

[0098] Based on the above-mentioned linkage, after the holding part 414 is completely disengaged from the slot 124, the sliding member 430 is released from position restriction and has the freedom to slide along the side plate 120 of the base 100, providing a motion prerequisite for the subsequent transmission process.

[0099] Therefore, after the holding part 414 disengages from the slot 124, under the continuous abutment of the circuit breaker body 200, the sliding part 430 begins to slide relative to the side plate 120 driven by the transmission part 410. At this time, although the holding part 414 is no longer engaged with the slot 124, it still maintains a sliding fit with the side plate 120. This means that the holding part 414 still moves along the guide structure of the side plate 120 during the sliding process, playing an auxiliary guiding and anti-deviation role; and since the first reset member 420 exerts a reset force on the transmission part 410, the action of the first reset member 420 is offset by the abutment between the holding part 414 and the side plate 120, thus preventing the transmission part 410 from resetting prematurely.

[0100] Furthermore, an abutment portion 415 is provided on one side of the actuating portion 411. When the holding portion 414 is disengaged from the slot 124, the abutment portion 415 abuts against the side plate 120 of the base 100.

[0101] It is worth mentioning that as the transmission component 410 continues to rotate, the abutment portion 415 gradually approaches the side plate 120 of the base 100 on the movement path, and abuts against the second door body 320 when the actuating portion 411 drives the second door body 320 to make the first through hole 311 correspond to the second through hole 321. This mechanically limits the rotation of the transmission component 410, preventing it from rotating excessively and causing the actuating portion 411 to apply excessive driving force to the second door body 320 or to produce misaligned output.

[0102] Furthermore, the actuating part 411 is also provided with a limiting part 416, and the second door body 320 is provided with a connecting part 322. The actuating part 411 is connected to the connecting part 322, and the limiting part 416 abuts against the second door body 320.

[0103] It should be noted that the connecting part 322 has a hole structure, and the actuating part 411 is inserted through the connecting part 322. Therefore, during the process of the transmission member 410 driving the second door body 320 and the first door body 310 to move synchronously, the limiting part 416 abuts against the second door body 320.

[0104] In addition, the transmission component 410 is also provided with a third fixing part (not shown in the figure), and the first reset component 420 is a torsion spring, one end of which abuts against the third fixing part. It should be noted that the first reset component 420 is highlighted for clear illustration. Figure 6 One end of the first reset member 420 does not abut against the transmission member 410.

[0105] Furthermore, the safety door assembly 300 also includes a connector 330. The first door body 310 is provided with a first connecting hole 312, and the second door body 320 is provided with a second connecting hole 323. The connector 330 is disposed in the first connecting hole 312 and the second connecting hole 323. The second connecting hole 323 has an oblong hole structure. The second door body 320 can move the connector 330 relative to the second connecting hole 323 under the drive of the transmission member 410.

[0106] It is understood that the first door body 310 and the second door body 320 are connected together by the connector 330 to improve the stability of the synchronous movement of the first door body 310 and the second door body 320. In order to ensure that the second door body 320 can move relative to the first door body 310, a second connecting hole 323 with an oblong hole structure is set in the second door body 320 to avoid the connector 330 from obstructing the displacement of the second door body 320 relative to the first door body 310.

[0107] Furthermore, the circuit breaker 10 also includes a guide shaft 600, which is disposed on the base 100. The first door 310 is movably disposed on the guide shaft 600, and the second reset member 500 is disposed on the guide shaft 600 and connected to the first door 310.

[0108] In this embodiment, the axial direction of the guide shaft 600 is perpendicular to the plane of the first door body 310 and the second door body 320. That is, the second door body 320 can move relative to the first door body 310 in its vertical plane under the drive of the transmission member 410, and the first door body 310 and the second door body 320 can also move synchronously along the guide shaft 600, thereby improving the movement stability of the first door body 310 and the second door body 320.

[0109] Furthermore, the base 100 is provided with a mounting hole 115, and a first guide portion 116 is provided inside the mounting hole 115; a second guide portion 610 is provided on the outer wall of the guide shaft 600. During the process of the guide shaft 600 passing through the mounting hole 115, the first guide portion 116 and the second guide portion 610 abut and slide to cooperate, so as to guide and limit the guide shaft 600 in the mounting hole 115; the safety door assembly 300 is movably disposed on the guide shaft 600.

[0110] Specifically, a first guide portion 116 is disposed within the mounting hole 115 on the base 100, while a second guide portion 610 is provided on the outer wall of the guide shaft 600. During the insertion of the guide shaft 600 into the mounting hole 115, the first guide portion 116 and the second guide portion 610 abut against each other and form a sliding fit. One of the first guide portion 116 and the second guide portion 610 is a guide protrusion, and the other is a corresponding guide groove; together, they constitute a directional guiding and limiting fit structure. This design allows the guide shaft 600 to smoothly advance along a preset path when inserted into the mounting hole 115, avoiding assembly difficulties or loosening of the connection due to skewness or rotation. During this process, the contact surface between the guide protrusion and the guide groove continuously transmits positioning information, ensuring that the guide shaft 600 enters the installation position with the correct spatial posture, and achieving an anti-rotation function through the anti-rotation fit of the two after it is in place.

[0111] In this embodiment, after the guide shaft 600 is assembled, the safety door assembly 300 is movably mounted on the guide shaft 600. It can be seen that the guide shaft 600 not only provides mechanical support, but also serves as the reference axis for the movement path of the safety door assembly 300, enabling it to maintain a straight-line movement trajectory during push-pull operations and reducing the risk of jamming.

[0112] Therefore, by placing the first guide portion 116 within the mounting hole 115 and forming a guide protrusion and guide groove cooperation with the second guide portion 610 on the guide shaft 600, this embodiment effectively solves the problems of misalignment, easy loosening, and rotational instability existing in traditional assembly methods. This structure enables rapid and accurate installation of the guide shaft 600 while also providing axial positioning and circumferential limiting functions, significantly improving the assembly efficiency and connection reliability of the overall structure. Furthermore, the safety door assembly 300 is movably mounted on the precisely positioned guide shaft 600, reliably constraining its movement and thus enhancing the durability and safety performance of the circuit breaker 10 under frequent insertion and removal operations.

[0113] In detail, the guide groove is formed by two opposing guide walls 611, both of which are inclined along the axial direction. The guide protrusion is used to abut against and slide against the side wall of the guide groove.

[0114] Specifically, when the guide shaft 600 passes through the mounting hole 115 of the base 100, the guide protrusion enters the guide groove formed by two inclined guide walls 611, and the two make continuous lateral contact in the axial advancing direction. Since the guide walls 611 are arranged axially inclined, as the guide shaft 600 is continuously inserted, the guide protrusion gradually slides along the inclined surface of the guide wall 611. This process not only guides the guide shaft 600 along a predetermined trajectory but also forces the guide shaft 600 to undergo adaptive rotation in the circumferential direction to complete automatic spatial posture correction. This design allows the guide shaft 600 to achieve self-alignment even with slight angular deviations in the initial assembly stage through the inclined surface action between the guide wall 611 and the guide protrusion, avoiding damage to parts or assembly failure due to forced insertion.

[0115] In this embodiment, the inclination angle of the guide wall 611 determines the radial displacement path and rotation rate of the guide protrusion during the sliding process, thus affecting the smoothness of the entire guiding and limiting action. The continuous contact between the guide protrusion and the side wall of the guide groove ensures that an effective mechanical transmission relationship is always maintained between the two, providing the guiding force required for axial advancement and forming a constraint in the circumferential direction to prevent disordered rotation of the guide shaft 600 during installation, significantly improving assembly efficiency and reliability.

[0116] The two guide walls 611 are spaced apart at one end with the spacing gradually decreasing along the axial direction to form a limiting opening 612, and the guide protrusion is engaged in the limiting opening 612.

[0117] Specifically, when the guide shaft 600 is inserted axially into the mounting hole 115, the guide protrusion first enters the inlet area of ​​the guide groove formed by the two inclined guide walls 611. As the insertion depth increases, the distance between the guide walls 611 gradually decreases, forcing the guide protrusion to undergo a combined radial compression and circumferential rotation along the inclined surface. This process continues until the guide protrusion reaches the limiting opening 612 at the end of the guide groove. At this point, the distance between the guide walls 611 reaches its minimum, forming a slightly open structure and creating a locking space whose size matches the cross-section of the guide protrusion.

[0118] This design ensures that the guide protrusion is constrained by the limiting opening 612 after it is fully inserted, preventing it from retracting axially or rotating freely, thereby achieving final positioning and anti-loosening locking of the guide shaft 600 within the mounting hole 115.

[0119] In addition, the end of the guide protrusion is provided with an inclined first guide portion 117, which is engaged with the limiting opening 612.

[0120] In this embodiment, the first guide part 117 serves as the front pre-guide structure of the guide protrusion. Its chamfered shape not only reduces the assembly resistance during the initial insertion stage, but also reduces friction and wear between the two parts through a smooth transition of the geometric structure, avoiding jamming and other situations. Therefore, it improves the assembly efficiency and enhances the durability after multiple disassemblies and reassemblies.

[0121] Furthermore, the outer diameter of the guide shaft 600 near the base 100 is smaller than the outer diameter of the section of the guide shaft 600 where the limit opening 612 is located; the inner diameter of the mounting hole 115 is adapted to the outer diameter of the guide shaft 600.

[0122] In detail, the mounting hole 115 includes a first channel 1151 and a second channel 1152 that are connected. A first guide portion 116 is disposed in the second channel 1152. The inner diameter of the first channel 1151 is smaller than the inner diameter of the second channel 1152. The guide shaft 600 includes a first segment 620, a second segment 630 and a third segment 640 that are connected in sequence. The outer diameter of the first segment 620 is smaller than the outer diameter of the second segment 630. A second guide portion 610 is disposed in the second segment 630. The third segment 640 can be used to install the component to be installed. For example, in this embodiment, the safety door assembly 300 can be movably disposed in the third segment 640 through the bushing 700.

[0123] Specifically, when the guide shaft 600 passes through the mounting hole 115, the smaller diameter first segment 620 enters the larger inner diameter second channel 1152, which facilitates the quick insertion of the guide shaft 600 into the mounting hole 115. After installation, the first segment 620 is located in the first channel 1151 that matches its size, and the second segment 630 is located in the second channel 1152 that matches its size, so that the guide shaft 600 is stably installed in the mounting hole 115.

[0124] Furthermore, the circuit breaker 10 also includes a fastener, a first section 620 passing through the first channel 1151 and threadedly engaged with the fastener, and an inclined second guide 621 provided at the end of the first section 620.

[0125] In this embodiment, the first segment 620 passes through the second channel 1152 and the first channel 1151 in sequence and extends out of the first channel 1151. Its external thread is exposed outside the base 100 and engages with the fastener thread. The fastener can be a nut or other locking element with internal threads. After tightening, it can pull the guide shaft 600 axially and press it against the end face of the base 100, thereby forming a preload force. This prevents the guide shaft 600 from loosening or axial displacement due to vibration or repeated stress during use. This not only enhances the overall fixing reliability of the guide shaft 600, but also facilitates later maintenance and disassembly, allowing for quick replacement without special tools.

[0126] In addition, the second guide portion 621 is a chamfered structure provided at the end of the first section 620 to facilitate the guide shaft 600 to pass through the second channel 1152 and the first channel 1151 in sequence.

[0127] Furthermore, the mounting hole 115 also includes a third channel 1153, and the first channel 1151, the third channel 1153 and the second channel 1152 are connected in sequence. The inner diameter of the third channel 1153 gradually decreases in the axial direction from the second channel 1152 to the first channel 1151. The guide shaft 600 also includes a fourth segment 650, and the first segment 620, the fourth segment 650, the second segment 630 and the third segment 640 are connected in sequence. The outer diameter of the fourth segment 650 gradually decreases in the axial direction from the second segment 630 to the first segment 620. The fourth segment 650 is disposed in the third channel 1153.

[0128] Because the inner wall of the third channel 1153 is tapered and constricted, and the outer periphery of the fourth section 650 is also designed as a tapered surface structure with a gradually decreasing outer diameter, the two form a tapered surface mating relationship with the same inclination. With this design, during the relative advancement process, the outer peripheral tapered surface of the fourth section 650 is in continuous contact with the inner peripheral tapered surface of the third channel 1153 and generates a radial guiding force. This force can automatically correct the axial misalignment between the guide shaft 600 and the mounting hole 115, so that the guide shaft 600 gradually tends to the center position, thereby effectively improving the alignment accuracy of the overall assembly.

[0129] Furthermore, the circuit breaker 10 also includes a bushing 700, which is movably fitted onto the guide shaft 600. The bushing 700 is provided with a limiting part. The bushing 700 is used to install the component to be installed, and the limiting part is used to prevent the component to be installed from falling off the bushing 700. For example, in this embodiment, the safety door assembly 300 is provided on the bushing 700.

[0130] Specifically, the bushing 700 passes through the first connecting hole 312 and the second connecting hole 323. As a functional component fitted outside the guide shaft 600, the bushing 700 serves as the mounting base for the safety door assembly 300. When the circuit breaker body 200 moves in or out of the switchgear, the safety door assembly 300 needs to slide axially to complete the opening or closing action. This movement is achieved through the axial movement of the bushing 700 on the guide shaft 600. This design ensures that the safety door assembly 300 does not directly contact the guide shaft 600, but instead uses the bushing 700 as a sliding medium, effectively reducing the risk of surface damage between friction pairs and improving the smoothness and durability of movement. Simultaneously, the presence of the bushing 700 evenly distributes the force on the safety door assembly 300 to the entire length of the guide shaft 600, avoiding localized stress concentration and extending the service life of the guide structure.

[0131] Furthermore, a snap-fit ​​portion 641 is provided at the end of the guide shaft 600 away from the base 100, and an anti-detachment portion 710 is provided on the inner wall of the bushing 700. The snap-fit ​​portion 641 is movably disposed within the bushing 700, and the anti-detachment portion 710 is used to abut against the snap-fit ​​portion 641 to prevent the snap-fit ​​portion 641 from falling off the bushing 700.

[0132] Specifically, when the bushing 700 is fitted onto the guide shaft 600 and slides along its axial direction, the locking part 641 is located within the internal moving space of the bushing 700, allowing the bushing 700 to reciprocate between its two sides. The locking part 641 is typically a boss, retaining ring, or other expanded diameter structure with a diameter larger than the rest of the shaft body, while the anti-disengagement part 710 is a corresponding stepped surface or annular protrusion on the inner wall of the bushing 700.

[0133] With this design, when the bushing 700 slides to its limit position away from the base 100, its internal anti-disengagement part 710 will axially abut against the locking part 641 to form a mechanical stop, preventing the bushing 700 from continuing to move outward, thereby effectively restricting its range of motion and ensuring that it is always within the preset track.

[0134] In detail, the engaging portion 641 includes at least two spaced-apart latches 643. Each latch 643 is provided with an inclined abutment wall 644 and a limiting wall 645. The guide shaft 600 passes through the bushing 700. The anti-detachment portion 710 abuts against the abutment wall 644 to deform the at least two latches 643 so as to allow the engaging portion 641 to pass through the anti-detachment portion 710. The limiting wall 645 abuts against the anti-detachment portion 710 to prevent the engaging portion 641 from falling off the anti-detachment portion 710.

[0135] Furthermore, the outer wall of the guide shaft 600 is provided with a guide groove 642, and the inner wall of the bushing 700 is also provided with a guide block. The guide groove 642 and the guide block are slidably engaged to prevent the guide shaft 600 and the bushing 700 from rotating relative to each other, thereby ensuring that the bushing 700 moves relative to the guide shaft 600 along the axial direction, thus improving stability. When the quick guide positioning assembly is installed, the guide protrusion is locked in the limiting opening 612. The guide protrusion, the limiting opening 612, the guide groove 642, and the guide block are located in the same circumference of the guide shaft 600. At this time, the guide shaft 600 will not rotate relative to the base 100, and the bushing 700 will not rotate, thereby ensuring that the mounting parts on the bushing 700 will not rotate due to the rotation of the bushing 700, further improving stability.

[0136] Furthermore, the safety door assembly 300 is provided with a bushing hole 340 and a clearance opening 350. The outer wall of the bushing 700 is provided with a first fixing part 720 and a second fixing part 730. The bushing 700 passes through the bushing hole 340, and the clearance opening 350 is used for the first fixing part 720 to pass through, so that the safety door assembly 300 is located between the first fixing part 720 and the second fixing part 730.

[0137] It should be noted that the bushing hole 340 and the clearance opening 350 are both located on the first door body 310.

[0138] In this embodiment, the bushing 700, as a movable component sleeved outside the guide shaft 600, does not have self-limiting rotation capability and must rely on external structures for constraint. By providing a first fixing part 720 and a second fixing part 730 on the outer wall of the bushing 700 and clamping the safety door assembly 300 therebetween, not only is stable axial support provided, but also the relative fixation of the bushing 700 and the safety door assembly 300 is achieved.

[0139] It should be noted that the "avoidance opening 350 for the first fixing part 720 to pass through" mentioned here is defined as follows: the size and shape of the avoidance opening 350 on the safety door assembly 300 match the outer contour of the first fixing part 720, so that it can pass smoothly during the assembly process, thereby allowing the safety door assembly 300 to move as a whole to the receiving area between the first fixing part 720 and the second fixing part 730, and rotating the bushing 700 to make the first fixing part 720 and the avoidance opening 350 misaligned, thereby completing the installation of the bushing 700 and the door assembly.

[0140] It is worth mentioning that the second reset member 500 is sleeved on the guide shaft 600, with one end of the second reset member 500 abutting against the base 100 and the other end abutting against the bushing 700. Therefore, when the circuit breaker body 200 abuts against the transmission member 410 and drives the transmission member 410 to slide, the circuit breaker body 200 will also abut against the bushing 700, so as to compress the second reset member 500 through the bushing 700. Thus, after the circuit breaker body 200 is removed, the elastic force generated by the second reset member 500 drives the bushing 700 and the safety door assembly 300 to reset.

[0141] It should also be noted that the limiting opening 612, the guide groove 642, the guide block and the clearance opening 350 are located in the same circumference of the guide shaft 600, and the circumference of the first fixing part 720 relative to the bushing 700 is perpendicular to the circumference of the clearance opening 350 relative to the bushing hole 340.

[0142] It can be understood that the first fixing part 720 extends circumferentially relative to the bushing 700 in the direction of extending from the axis of the bushing 700 toward the first fixing part 720, and the clearance opening 350 extends circumferentially relative to the bushing hole 340 in the direction of extending from the center of the bushing hole 340 toward the clearance opening 350. In other words, after the first fixing part 720 on the bushing 700 passes through the bushing hole 340 via the clearance opening 350, the bushing 700 needs to be rotated, for example, by 90° or other angles, so that the first fixing part 720 and the clearance opening 350 are misaligned, thereby preventing the bushing 700 from detaching from the safety door assembly 300 and further improving installation stability.

[0143] Furthermore, the circuit breaker body 200 is provided with multiple contact bridges, which are arranged in a row and multiple rows with lateral spacing. The contact bridges in adjacent rows are staggered to improve the heat dissipation effect of the contact bridges.

[0144] It is understandable that when the circuit breaker body 200 is inserted, the circuit breaker body 200 can abut against the bushing 700, or the contact bridge cover set on the circuit breaker body 200 can abut against the bushing 700, thereby achieving the purpose of pushing the safety door assembly 300.

[0145] Furthermore, the contact bridge includes a first contact body and two second contacts body, the two second contacts body are spaced apart and one end of each is connected to the first contact body, and the circuit breaker body 200 is also provided with a heat dissipation component, wherein at least one of the second contacts body is provided with a heat dissipation component to further improve its heat dissipation effect.

[0146] Furthermore, a partition is provided between two adjacent contact bridges in each row to limit and divide the electric arc, thereby improving the safety performance of the circuit breaker 10.

[0147] In summary, this invention provides a circuit breaker 10. A first guide portion 116 is disposed within a mounting hole 115 on a base 100, while a second guide portion 610 is provided on the outer wall of a guide shaft 600. During the insertion of the guide shaft 600 into the mounting hole 115, the first guide portion 116 and the second guide portion 610 abut against each other and form a sliding fit. Here, one of the first guide portion 116 and the second guide portion 610 is a guide protrusion, and the other is a corresponding guide groove; the two constitute a directional guidance and limiting fit structure. This design allows the guide shaft 600 to smoothly advance along a preset path when inserted into the mounting hole 115, avoiding assembly difficulties or loosening of the connection due to skewness or rotation. During this process, the contact surface between the guide protrusion and the guide groove continuously transmits positioning information, ensuring that the guide shaft 600 enters the installation position with the correct spatial posture, and achieving an anti-rotation function through the anti-rotation fit of the two after it is in place. After the guide shaft 600 is assembled, the safety door assembly 300 can be movably mounted on the guide shaft 600. It can be seen that the guide shaft 600 not only provides mechanical support, but also serves as the reference axis for the movement path of the safety door assembly 300, enabling it to maintain a straight movement trajectory during push-pull operations and reducing the risk of jamming.

[0148] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A rapid guiding and positioning component, characterized in that, include: The base (100) is provided with a mounting hole (115) and a first guide part (116) is provided in the mounting hole (115). A guide shaft (600) has a second guide portion (610) on its outer wall. During the process of the guide shaft (600) passing through the mounting hole (115), the first guide portion (116) and the second guide portion (610) abut and slide to play a guiding and limiting role for the guide shaft (600) to be set in the mounting hole (115). One of the first guide portion (116) and the second guide portion (610) is a guide protrusion and the other is a guide groove. The guide groove is formed by two opposing guide walls (611), both of which are inclined along the axial direction. The guide protrusion is used to abut against and slide against the side wall of the guide groove. The quick guide positioning assembly also includes a bushing (700), which is movably sleeved on the guide shaft (600). The bushing (700) is provided with a limiting part. The bushing (700) is used to install the component to be installed, and the limiting part is used to prevent the component to be installed from falling off the bushing (700). The guide shaft (600) is provided with a snap-fit ​​part (641) at the end away from the base (100), and the inner wall of the bushing (700) is provided with an anti-detachment part (710). The snap-fit ​​part (641) is movably disposed in the bushing (700), and the anti-detachment part (710) is used to abut against the snap-fit ​​part (641) to prevent the snap-fit ​​part (641) from falling off the bushing (700).

2. The rapid guiding and positioning component according to claim 1, characterized in that, The two guide walls (611) are spaced apart at one end with the spacing gradually decreasing along the axial direction to form a limiting opening (612), and the guide protrusion is engaged in the limiting opening (612).

3. The rapid guiding and positioning component according to claim 2, characterized in that, The end of the guide protrusion is provided with an inclined first guide portion (117), which is engaged with the limiting opening (612).

4. The rapid guiding and positioning component according to claim 2, characterized in that, The outer diameter of the guide shaft (600) near the base (100) is smaller than the outer diameter of the section of the guide shaft (600) where the limiting opening (612) is located; the inner diameter of the mounting hole (115) is adapted to the outer diameter of the guide shaft (600).

5. The rapid guiding and positioning assembly according to any one of claims 1-4, characterized in that, The mounting hole (115) includes a first channel (1151) and a second channel (1152) that are connected. The first guide portion (116) is disposed in the second channel (1152). The inner diameter of the first channel (1151) is smaller than the inner diameter of the second channel (1152). The guide shaft (600) includes a first segment (620), a second segment (630) and a third segment (640) that are connected in sequence. The outer diameter of the first segment (620) is smaller than the outer diameter of the second segment (630). The second guide portion (610) is disposed in the second segment (630). The third segment (640) is used to install the component to be installed.

6. The rapid guiding and positioning component according to claim 5, characterized in that, The quick guide positioning assembly also includes a fastener, the first segment (620) passes through the first channel (1151) and is threadedly engaged with the fastener, and the end of the first segment (620) is provided with an inclined second guide portion (621).

7. The rapid guiding and positioning component according to claim 5, characterized in that, The mounting hole (115) further includes a third channel (1153), the first channel (1151), the third channel (1153) and the second channel (1152) are connected in sequence, and the inner diameter of the third channel (1153) gradually decreases in the axial direction from the second channel (1152) toward the first channel (1151). The guide shaft (600) further includes a fourth segment (650), wherein the first segment (620), the fourth segment (650), the second segment (630) and the third segment (640) are connected in sequence, and the outer diameter of the fourth segment (650) gradually decreases in the axial direction from the second segment (630) toward the first segment (620); The fourth segment (650) is disposed in the third channel (1153).

8. The rapid guiding and positioning component according to claim 1, characterized in that, The outer wall of the guide shaft (600) is provided with a guide groove (642), and the inner wall of the bushing (700) is also provided with a guide block. The guide groove (642) and the guide block are slidably engaged.

9. The rapid guiding and positioning component according to claim 8, characterized in that, The outer wall of the guide shaft (600) is provided with a limiting opening (612). In the installed state of the quick guide positioning assembly, the guide protrusion is engaged in the limiting opening (612). The guide protrusion, the limiting opening (612), the guide groove (642), and the guide block are located in the same circumference of the guide shaft (600).

10. A circuit breaker, characterized in that, It includes a safety door assembly (300) and a quick guide positioning assembly as claimed in any one of claims 1-9, wherein the safety door assembly (300) is movably disposed on the bushing (700) of the quick guide positioning assembly.

11. The circuit breaker according to claim 10, characterized in that, The quick guide positioning assembly includes a bushing (700) which is movably fitted onto the guide shaft (600). The bushing (700) is provided with a limiting part. The safety door assembly (300) is movably disposed on the bushing (700) through the bushing (700). The limiting part is used to limit the safety door assembly (300) to prevent the safety door assembly (300) from falling off the bushing (700).

12. The circuit breaker according to claim 11, characterized in that, The safety door assembly (300) is provided with a bushing hole (340) and a clearance opening (350). The limiting part includes a first fixing part (720) and a second fixing part (730), the first fixing part (720) and the second fixing part (730) protruding from the outer wall of the bushing (700); The bushing (700) passes through the bushing hole (340), and the clearance opening (350) is used for the first fixing part (720) to pass through so that the safety door assembly (300) is located between the first fixing part (720) and the second fixing part (730).

13. The circuit breaker according to claim 10, characterized in that, The circuit breaker also includes a circuit breaker body (200), a transmission assembly (400), and a second reset component (500). The safety door assembly (300) includes a first door body (310) and a second door body (320). The first door body (310) is movably disposed on the base (100), and the second door body (320) is movably disposed on the first door body (310). The first door body (310) is provided with a first through hole (311), and the second door body (320) is provided with a second through hole (321). A transmission assembly (400) includes a transmission member (410) and a first reset member (420). The transmission member (410) is movably disposed on the base (100) and connected to the second door body (320). The transmission member (410) is used to drive the second door body (320) to move under the drive of the circuit breaker body (200) so that the first through hole (311) and the second through hole (321) correspond, and drive the first door body (310) and the second door body (320) to move synchronously. The first reset member (420) is connected to the transmission member (410) and is used to drive the transmission member (410) to reset after the force of the circuit breaker body (200) on the transmission member (410) is removed. The second reset member (500) is disposed on the base (100) and is used to drive the first door body (310) and the second door body (320) to reset when the force exerted by the circuit breaker body (200) on the transmission member (410) is removed.

14. The circuit breaker according to claim 13, characterized in that, The safety door assembly (300) further includes a connector (330). The first door body (310) is provided with a first connecting hole (312), and the second door body (320) is provided with a second connecting hole (323). The connector (330) passes through the first connecting hole (312) and the second connecting hole (323). The second connecting hole (323) has an oblong hole structure. The second door body (320) can move along the extension direction of the second connecting hole (323) under the drive of the transmission member (410) so that the first through hole (311) and the second through hole (321) correspond.

15. The circuit breaker according to claim 13, characterized in that, The guide shaft (600) has a snap-fit ​​portion (641) at its end away from the base (100), and the inner wall of the bushing (700) has an anti-detachment portion (710). The snap-fit ​​portion (641) includes at least two spaced buckles (643), and each buckle (643) has an inclined abutment wall (644) and a limiting wall (645). The guide shaft (600) passes through the bushing (700). The anti-detachment portion (710) abuts against the abutment wall (644) to deform at least two of the buckles (643) so that the snap-fit ​​portion (641) can pass through the anti-detachment portion (710). The limiting wall (645) abuts against the anti-detachment portion (710) to restrict the snap-fit ​​portion (641) from falling off the anti-detachment portion (710). The second reset member (500) is sleeved on the guide shaft (600), and one end of the second reset member (500) abuts against the base (100), and the other end abuts against the anti-detachment part (710).

16. The circuit breaker according to claim 12, characterized in that, The guide shaft (600) is provided with a limiting opening (612) and a guide groove (642). The guide protrusion is engaged with the limiting opening (612). The inner wall of the bushing (700) is also provided with a guide block. The guide groove (642) is slidably engaged with the guide block. The limiting opening (612), the guide groove (642), the guide block and the clearance opening (350) are located in the same circumference of the guide shaft (600), and the circumference of the first fixing part (720) relative to the bushing (700) is perpendicular to the circumference of the clearance opening (350) relative to the bushing hole (340).

Images