A leakage circuit breaker with easy lock installation

Abstract

The present invention relates to a leakage current circuit breaker with an easy-to-install lock, comprising a base, an operating mechanism, and an upper cover. The base is connected to the upper cover, and the operating mechanism is located between the base and the upper cover. The operating mechanism includes a bracket, a trip assembly, a lock, and an operating body. The bracket is provided with two first side panels. The operating mechanism also includes a reset spring. The lock is hinged to the bracket or the base at a position between the two first side panels. The top of the lock is provided with a trip plate having a width greater than the spacing between the two side panels. The trip assembly applies a force to the trip plate away from the bracket. A reset plate is provided on the side of the lock facing away from the bracket. The two ends of the reset spring respectively apply forces to the base and the reset plate. The lock is provided with a limit block that limits the position of the reset spring. The present invention provides a leakage current circuit breaker with an easy-to-install lock.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit breakers, and in particular to a leakage circuit breaker with a lock that is easy to install. Background Art

[0002] A leakage circuit breaker is a switch that automatically operates when the leakage current in a circuit exceeds a predetermined value. Commonly used leakage circuit breakers are divided into two types: voltage type and current type. The current type is further divided into electromagnetic type and electronic type. Leakage circuit breakers are used to prevent personal electric shock and should be selected based on the different requirements of direct contact and indirect contact electric shock protection.

[0003] The leakage circuit breaker realizes the disconnection function of the switch by controlling the electromagnet to pull the lock hinged to the bracket to make the tripping buckle pressed on the lock buckle disconnect and bounce away. In order to prevent the lock buckle from popping out due to vibration, a torsion spring is also provided on the lock buckle to press it toward the tripping buckle. In this way, during installation, it is necessary to align the hinged shaft through the bracket, then align it through the lock buckle, then align it through the torsion spring, and then align it through the other end of the bracket. In order for the torsion spring to continuously output force, the torsion spring must be in a state of tightening at both ends before passing through the torsion spring. Alignment is very difficult. Once the torsion spring is not grasped firmly, it is easy to pop out. In order to be more stable, the torsion spring will also be provided in the central position, that is, in the middle of the lock buckle. In this way, a groove for placing the torsion spring is also provided in the middle of the lock buckle. The hinged shaft needs to be aligned with the other side of the lock buckle when passing through, which is even more troublesome. Summary of the Invention

[0004] In summary, in order to overcome the deficiencies of the prior art, the present invention provides a leakage circuit breaker with a lock that is easy to install.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a leakage circuit breaker with an easy-to-install lock, comprising a base, an operating mechanism and an upper cover, the base being connected to the upper cover, the operating mechanism being located between the base and the upper cover, the operating mechanism comprising a bracket, a trip assembly, a lock and an operating body, the bracket being provided with two first side plates, the operating mechanism also including a reset spring, the lock being hinged to the bracket or the base at a position between the two first side plates, a trip plate having a width greater than the spacing between the two side plates being provided at the top of the lock, the trip assembly applying a force to the trip plate facing away from the bracket, a reset plate being provided on the side of the lock facing away from the bracket, the two ends of the reset spring respectively applying forces to the base and the reset plate, and the lock being provided with a limit block for limiting the position of the reset spring.

[0006] When the lock is installed, the hinge axis of the lock does not need to be aligned with the reset part, only the lock and the bracket need to be connected, which is easier to align. The reset spring is installed outside and is easier to place. The reset spring is also easier to compress than the torsion spring, making it easier to install.

[0007] Furthermore, there are two limit blocks, which are respectively arranged on the end faces of the reset plate and the base facing each other, and the limit blocks are frustums whose outer diameters match the inner diameters of the reset springs.

[0008] With this arrangement, the two truncated cone-shaped limit blocks will be inserted from the center position of the reset spring to limit it. After insertion, the reset spring can no longer move. While limiting the position, it does not affect the compression deformation caused by the reset plate. The structure is simple and the installation is convenient.

[0009] Furthermore, the lock is provided with a hinge shaft integrally arranged therewith, the width of the lock is smaller than the distance between the two first side panels, a hinge plate is provided on the side of the first side panel facing the lock, a hinge groove is provided at the bottom of the hinge plate that is adapted to the hinge shaft, and the bracket is fixedly connected to the base.

[0010] With this arrangement, the hinge shaft on the lock can be pressed directly into the hinge slot at the bottom of the hinge plate before installing the bracket. In this way, the bracket will directly lock the lock slot on the base when the bracket is installed on the base. After installation, the hinge shaft will be confined in the hinge slot to complete the hinge. After the hinge shaft and the lock slot are integrated, the step of aligning the hinge shaft through the lock slot is eliminated, and the hinge shaft does not need to be installed by passing through the bracket. It only needs to be inserted from the hinge slot, which makes installation more convenient.

[0011] Furthermore, the bracket is provided with connecting bolts, and the bracket and the base are connected by means of the connecting bolts.

[0012] With this arrangement, after the connecting bolt passes through the two parts and is threadedly connected, the bolt head of the connecting bolt will tightly clamp the two parts, making installation easy.

[0013] Furthermore, the connecting bolt passes through the base and the bracket from the bottom of the base and is threadedly connected to the bracket, and the bolt head of the connecting bolt is located at the bottom of the base.

[0014] With this arrangement, you can now press directly on the top of the base and then insert the connecting bolt from the bottom of the base and screw it in. The bottom of the base is more open, without messy parts, making it easier to install and more convenient to install. The tail of the connecting bolt can be set below the movable parts to avoid interference.

[0015] Furthermore, the top surface of the base is provided with two second side panels, the bracket is located between the two second side panels, and the width of the bracket is adapted to the distance between the two second side panels.

[0016] With this arrangement, the bracket will be stuck between the two second side panels, and the second side panels will limit the bracket relative to its horizontal position to prevent it from rotating. The process of screwing in the connecting bolts is more convenient, and no manual fixation is required, making installation more convenient. After the installation is completed, the bracket will no longer rotate and is more stable.

[0017] Furthermore, the hinge notch is an inverted U-shaped groove, and the distance between the top of the hinge notch and the base is adapted to the diameter of the hinge shaft, and the hinge shaft is located at the bottom end of the lock buckle.

[0018] With this arrangement, the outer wall of the hinge shaft will become the bottom surface of the lock. After the lock is buckled by the bracket, the U-shaped hinge groove will completely lock the hinge shaft, and the hinge shaft will only rotate in the hinge groove, which is more stable.

[0019] Furthermore, a pressing platform is provided on a side of the lock buckle facing the bracket, and the bottom surface of the reset plate is higher than the top surface of the pressing platform.

[0020] With this arrangement, when the bottom surface of the reset plate is higher than the pressing platform, the force-bearing height thereof will be higher than the position where it is pressed, and the tripping process will be more stable.

[0021] Furthermore, the height of the top surface of the pressing platform is higher than the height of the bottom surface of the reset plate.

[0022] With this arrangement, even if the two sides of the reset plate are broken, they are not easily completely separated from that position, and the strength is higher.

[0023] Furthermore, a driving plate is provided on one side of the reset plate, the driving plate is provided with a driving slot, the tripping assembly is an electromagnet, and the body and head of the moving iron core of the tripping assembly are respectively located on both sides of the driving slot.

[0024] With this arrangement, the electromagnet will suck the moving iron core back when triggered, and the retracted moving iron core will pull the driving plate in the driving slot, thereby achieving the effect of pulling the lock open, and the structure is simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 Schematic diagram of the structure of an embodiment of the present invention.

[0026] Figure 2 It is a partial exploded view of an embodiment of the present invention.

[0027] Figure 3 for Figure 2 Magnified view of part A.

[0028] Figure 4 Schematic diagram of the structure of an embodiment of the present invention in a state without a top cover.

[0029] Figure 5 2 is a cross-sectional view of an embodiment of the present invention.

[0030] Meaning of the numbers in the figure: 1. Base, 101. Second side panel, 2. Operating mechanism, 201. Bracket, 2011. First side panel, 20111. Hinge plate, 20112. Hinge notch, 2012. Connecting bolt, 202. Trip assembly, 203. Lock, 2031. Trip plate, 2032. Reset plate, 20321. Drive plate, 20322. Drive slot, 2033. Limit block, 2034. Hinge shaft, 2035. Pressing platform, 204. Operating body, 205. Reset spring, 3. Upper cover. DETAILED DESCRIPTION

[0031] This specific embodiment is merely an explanation of this embodiment and is not a limitation of this embodiment. After reading this specification, those skilled in the art may make non-creative modifications to this embodiment as needed, but as long as they are within the scope of the claims of this embodiment, they are protected by patent law.

[0032] Referring to the accompanying drawings, the present invention provides the following technical solutions: a leakage circuit breaker with a lock that is easy to install, comprising a base 1, an operating mechanism 2 and an upper cover 3, wherein the base 1 is connected to the upper cover 3, the operating mechanism 2 is located between the base 1 and the upper cover 3, the operating mechanism 2 comprises a bracket 201, a trip assembly 202, a lock 203 and an operating body 204, the bracket 201 is provided with two first side plates 2011, the operating mechanism 2 further comprises a reset spring 205, the lock 203 is located between the two first side plates 2011 The position is hinged to the bracket 201 or the base 1, and the top of the lock 203 is provided with a trip plate 2031 with a width greater than the distance between the two side panels. The trip assembly 202 applies a force to the trip plate 2031 toward the bracket 201, and a reset plate 2032 is provided on the side of the lock 203 facing away from the bracket 201. The two ends of the reset spring 205 respectively apply forces to the base 1 and the reset plate 2032, and the lock 203 is provided with a limit block 2033 for limiting the position of the reset spring 205.

[0033] With such a configuration, when installing, first install the base 1, bracket 201, trip assembly 202, operating body 204 and other parts. Then, when installing the lock buckle 203, the lock buckle 203 can be directly installed on the bracket 201 first, so that it is hinged on the bracket 201 or the base 1, and has the ability to swing back and forth toward the bracket 201. At this time, the reset plate 2032 will be in a state parallel to the base 1. Then, the reset spring 205 can be inserted into the position between the reset plate 2032 and the base 1, and the two ends respectively press against the reset plate 2032 and the base 1. In this way, the reset spring 205 will output a force to both ends at the same time. Since the base 1 is fixed in position and cannot move, the lock The buckle 203 is hinged and movable, and the reset plate 2032 is arranged on the side of the lock buckle 203 facing away from the bracket 201. In this way, the force applied by the reset spring 205 on the reset plate 2032 will be transmitted and converted through the reset plate 2032, becoming a force that makes it swing toward the bracket 201. The position of the reset spring 205 is also limited by the limit block 2033 and will not bounce off when swinging. During installation, the hinge shaft 2034 of the lock buckle 203 does not need to be aligned with the reset part. It is only necessary to connect the lock buckle 203 and the bracket 201, which is easier to align. The reset spring 205 is installed outside and is easier to place. The reset spring 205 is also easier to compress than the torsion spring and is easy to install.

[0034] In this embodiment, preferably, there are two limit blocks 2033, which are respectively arranged on the end faces of the reset plate 2032 and the base 1 facing each other, and the limit block 2033 is a cone with an outer diameter adapted to the inner diameter of the reset spring 205.

[0035] With this arrangement, the two truncated cone-shaped limit blocks 2033 will be inserted from the center position of the reset spring 205 to limit it. After insertion, the reset spring 205 can no longer move. While limiting the position, it does not affect the compression deformation caused by the reset plate 2032. The structure is simple and easy to install.

[0036] In this embodiment, the lock buckle 203 is preferably provided with a hinge shaft 2034 integrally provided therewith, the width of the lock buckle 203 is smaller than the distance between the two first side panels 2011, and the first side panel 2011 facing the lock buckle 203 is provided with a hinge plate 20111, and the bottom of the hinge plate 20111 is provided with a hinge groove 20112 adapted to the hinge shaft 2034, and the bracket 201 is fixedly connected to the base 1.

[0037] With this arrangement, the hinge shaft 2034 on the lock buckle 203 can be pressed directly into the hinge slot 20112 at the bottom of the hinge plate 20111 before installing the bracket 201. In this way, when the bracket 201 is installed on the base 1, the bracket 201 will directly buckle the lock buckle 203 on the base 1. After installation, the hinge shaft 2034 will be confined in the hinge slot 20112 to complete the hinge. After the hinge shaft 2034 and the lock buckle 203 are arranged as one, the step of aligning the hinge shaft 2034 through the lock buckle 203 is eliminated, and the hinge shaft 2034 does not need to be installed by passing through the bracket 201. It only needs to be inserted from the hinge slot 20112, which makes installation more convenient.

[0038] Preferably, in this embodiment, the bracket 201 is provided with a connecting bolt 2012 , and the bracket 201 and the base 1 are connected by means of the connecting bolt 2012 .

[0039] With such arrangement, after the connecting bolt 2012 passes through the two parts and is threadedly connected, the bolt head of the connecting bolt 2012 will tightly clamp the two parts, making installation easy.

[0040] Preferably, in this embodiment, the connecting bolt 2012 passes through the base 1 and the bracket 201 from the bottom of the base 1 and is threadedly connected to the bracket 201 , and the bolt head of the connecting bolt 2012 is located at the bottom of the base 1 .

[0041] With this arrangement, you can now press directly on the top of the base 1 and then insert the connecting bolt 2012 from the bottom of the base 1 and screw it in. The bottom of the base 1 is more open, without messy parts, making it easier to install and more convenient to install. The tail of the connecting bolt 2012 can be set below the movable parts to avoid interference.

[0042] Preferably, in this embodiment, the top surface of the base 1 is provided with two second side panels 101 , the bracket 201 is located between the two second side panels 101 , and the width of the bracket 201 is adapted to the distance between the two second side panels 101 .

[0043] With this arrangement, the bracket 201 will be stuck between the two second side panels 101. The second side panels 101 will limit the bracket 201 relative to its horizontal position to prevent it from rotating. The process of screwing in the connecting bolt 2012 is more convenient, and no manual fixation is required, making installation more convenient. After the installation is completed, the bracket 201 will no longer rotate and is more stable.

[0044] In this embodiment, the hinge notch 20112 is preferably an inverted U-shaped groove, and the distance between the top of the hinge notch 20112 and the base 1 is adapted to the diameter of the hinge shaft 2034 , and the hinge shaft 2034 is located at the bottom end of the lock buckle 203 .

[0045] With this arrangement, the outer wall of the hinge shaft 2034 will become the bottom surface of the lock buckle 203. After the lock buckle 203 is buckled by the bracket 201, the U-shaped hinge groove 20112 will completely lock the hinge shaft 2034, and the hinge shaft 2034 will only rotate in the hinge groove 20112, which is more stable.

[0046] Preferably, in this embodiment, a pressing platform 2035 is provided on a side of the lock buckle 203 facing the bracket 201 , and a bottom surface of the reset plate 2032 is higher than a top surface of the pressing platform 2035 .

[0047] With this arrangement, when the bottom surface of the reset plate 2032 is higher than the pressing platform 2035 , the force-bearing height thereof will be higher than the pressed position, and the tripping process will be more stable.

[0048] Preferably, in this embodiment, the height of the top surface of the pressing platform 2035 is higher than the height of the bottom surface of the reset plate 2032 .

[0049] With such a configuration, even if both sides of the reset plate 2032 are broken, it is not easy to be completely separated from that position, and the strength is higher.

[0050] In this embodiment, a driving plate 20321 is preferably provided on one side of the reset plate 2032 , and the driving plate 20321 is provided with a driving slot 20322 . The tripping assembly 202 is an electromagnet, and the body and head of the moving iron core of the tripping assembly 202 are respectively located on both sides of the driving slot 20322 .

[0051] With such a configuration, the electromagnet will suck the moving iron core back when triggered, and the retracted moving iron core will pull the driving plate 20321 in the driving slot 20322, thereby achieving the effect of pulling the lock 203 open, and the structure is simple.

[0052] Although the present invention has been described in detail with reference to the aforementioned embodiments, the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A leakage circuit breaker with an easy-to-install lock, comprising a base, an operating mechanism, and an upper cover, wherein the base is connected to the upper cover, the operating mechanism is located between the base and the upper cover, the operating mechanism comprises a bracket, a trip assembly, a lock, and an operating body, the bracket having two first side panels, and characterized in that: The operating mechanism also includes a return spring, the lock catch is hinged to the bracket or the base at a position between the two first side plates, the top of the lock catch is provided with a trip plate with a width greater than the spacing between the two side plates, the trip assembly applies a force on the trip plate toward the bracket, the lock catch is provided with a reset plate on the side facing away from the bracket, the two ends of the return spring respectively apply forces on the base and the reset plate, the lock catch is provided with a limit block that limits the position of the return spring; the limit blocks are provided with two, and the two limit blocks are respectively provided on the end surfaces of the reset plate and the base facing each other, the limit blocks are frustums with an outer diameter adapted to the inner diameter of the return spring; the lock catch is provided with a hinge shaft integrally provided therewith, the width of the lock catch is less than the spacing between the two first side plates, the first side plate is provided with a hinge plate on the side facing the lock catch, the bottom of the hinge plate is provided with a hinge notch adapted to the hinge shaft, and the bracket is fixedly connected to the base.

2. The leakage circuit breaker with easy lock installation according to claim 1, characterized in that: The bracket is provided with connecting bolts, and the bracket and the base are connected by means of the connecting bolts.

3. The leakage circuit breaker with easy lock installation according to claim 2, characterized in that: The connecting bolt passes through the base and the bracket from the bottom of the base and is threadedly connected to the bracket. The bolt head of the connecting bolt is located at the bottom of the base.

4. The leakage circuit breaker with easy lock installation according to claim 2, characterized in that: Two second side panels are provided on the top surface of the base, the bracket is located between the two second side panels, and the width of the bracket is adapted to the distance between the two second side panels.

5. The leakage circuit breaker with easy lock installation according to claim 1, characterized in that: The hinge notch is an inverted U-shaped groove, and the distance between the top of the hinge notch and the base is adapted to the diameter of the hinge shaft, and the hinge shaft is located at the bottom end of the lock buckle.

6. The leakage circuit breaker with easy lock installation according to claim 1, characterized in that: A pressing platform is provided on a side of the lock buckle facing the bracket, and the bottom surface of the reset plate is higher than the top surface of the pressing platform.

7. The leakage circuit breaker with easy lock installation according to claim 6, characterized in that: The height of the top surface of the pressing platform is higher than the height of the bottom surface of the reset plate.

8. The leakage circuit breaker with easy lock installation according to claim 1, characterized in that: A driving plate is provided on one side of the reset plate, and the driving plate is provided with a driving slot. The tripping assembly is an electromagnet, and the body and head of the moving iron core of the tripping assembly are respectively located on both sides of the driving slot.

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