A circuit breaker mechanism

Abstract

The present invention relates to the technical field of circuit breakers, and in particular to a circuit breaker mechanism, comprising a circuit breaker body, a top plate of which is provided with a swing hole; an operating mechanism, the operating mechanism comprising a handle movably arranged in the swing hole, and a rotating base connected to the operating mechanism; a first rotating rod fixedly plugged into the rotating base; a buffer mechanism provided in the circuit breaker body; and a connecting assembly provided between the first rotating rod and the buffer mechanism and used for connecting the first rotating rod and the buffer mechanism. The present invention can effectively absorb the impact energy of a collision during operation, thereby reducing mechanical stress during operation and extending the service life of the circuit breaker.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit breakers, and in particular to a circuit breaker mechanism. Background Art

[0002] A circuit breaker is a switching device capable of closing, carrying, and interrupting current under normal circuit conditions, and closing, carrying, and interrupting current under abnormal circuit conditions within a specified timeframe. Circuit breakers are categorized as high-voltage and low-voltage based on their scope of use. The distinction between high and low voltage is relatively vague, with those above 3kV generally being considered high-voltage electrical appliances. Circuit breakers can be used to distribute electrical energy, infrequently start asynchronous motors, and protect power lines and motors. They automatically disconnect circuits in the event of severe overloads, short circuits, undervoltages, and other faults. Their functionality is equivalent to a combination of a fuse-type switch and an over- and under-temperature relay. Furthermore, interrupting the fault current generally requires no component changes; they have found widespread application. Chinese patent application publication number CN119542086A discloses a circuit breaker operating mechanism and circuit breaker, which boast a simple structure, low cost, and fast tripping speed.

[0003] However, the aforementioned patent still suffers from the following problem: Because there is no structure to reduce the impact force, the handle will always impact the through-hole wall when swinging. Furthermore, the impact force is very large, which can easily damage or even break the handle. To address this issue, the present invention proposes a circuit breaker mechanism. Summary of the Invention

[0004] To achieve the above object, the present invention provides a circuit breaker mechanism, comprising a circuit breaker body, wherein a swing hole is formed on a top plate of the circuit breaker body;

[0005] An operating mechanism, the operating mechanism comprising a handle movably disposed in the swing hole, and a rotating base connected to the operating mechanism;

[0006] A first rotating rod, fixedly plugged into the rotating base;

[0007] A buffer mechanism is provided in the circuit breaker body;

[0008] a connecting assembly, provided between the first rotating rod and the buffer mechanism, and used for connecting the first rotating rod and the buffer mechanism;

[0009] When the handle swings, the connecting component will rotate relative to the buffer mechanism. When the connecting component and the buffer mechanism rotate relative to each other, the movement speed of the handle in the swing hole will be slowed down, thereby reducing the impact force when the handle collides with the hole wall of the swing hole.

[0010] Optionally, the buffer mechanism includes:

[0011] A fixed plate is fixedly mounted on the inner side wall of the circuit breaker body, and a buffer groove is formed on the fixed plate. The groove cavity of the buffer groove is an arc-shaped structure, and the buffer groove has a first tail portion and a second head portion opposite to each other;

[0012] A first magnet block is fixed on the first tail portion;

[0013] The second magnet block is fixed on the second head portion, and a buffer space is defined between the second magnet block and the first magnet block.

[0014] Optionally, the connection component includes:

[0015] a second rotating rod, the second rotating rod having a second tail portion and a second head portion opposite to each other, the second tail portion being fixedly connected to the first rotating rod, and the second head portion being rotatably disposed on the fixed plate;

[0016] a magnet rod movably disposed in the buffer space, wherein the magnet rod has the same magnetic pole as the first magnet block and the second magnet block on a side close to each other;

[0017] The connecting plate is provided between the magnet rod and the second rotating rod and is used for connecting the magnet rod and the second rotating rod.

[0018] Optionally, a telescopic buffer mechanism is provided in the buffer space, which is provided between the first magnet block and the magnet rod and is used to connect the first magnet block and the magnet rod. The telescopic buffer mechanism buffers the movement speed of the magnet rod in the buffer space, thereby buffering the impact force.

[0019] Optionally, the telescopic buffer mechanism includes:

[0020] A telescopic buffer rod is fixedly mounted on the outer ring wall of the rotating shaft, and the rotating shaft is fixedly sleeved outside the magnet rod;

[0021] A telescopic buffer cylinder is fixed on the first magnet block and is movably sleeved outside the telescopic buffer rod;

[0022] A telescopic buffer spring is wound around the outside of the telescopic buffer cylinder, and two ends of the telescopic buffer spring are respectively fixedly connected to the outer side wall of the telescopic buffer rod and the outer side wall of the telescopic buffer cylinder.

[0023] Optionally, an extension mechanism is further included, and there are two extension mechanisms. The two extension mechanisms are respectively arranged on opposite sides of the first direction of the handle, and the first direction is consistent with the length direction of the cavity of the swing hole. The extension mechanism is used to play a buffering role when the handle swings.

[0024] Optionally, the extending mechanism includes:

[0025] An extension plate, wherein the extension plate is made of elastic material;

[0026] An extension slot is provided on the handle, the extension plate is movably inserted into the extension slot, and a plurality of slot bodies are provided on the slot wall of the extension slot;

[0027] The support and guide assembly is arranged in the extension groove, one end of the support and guide assembly is fixedly connected to the groove wall of the extension groove, and the other end of the support and guide assembly is fixedly connected to the extension plate.

[0028] Optionally, the support and guide assembly includes:

[0029] A support guide rod is fixedly arranged on the extension plate, and the support guide rod is movably arranged in the extension groove;

[0030] A support guide cylinder is fixedly arranged on the groove wall of the extension groove, and the support guide cylinder is movably sleeved outside the support guide rod;

[0031] A support guide spring is wound around the outside of the support guide rod, and two ends of the support guide spring are respectively fixedly connected to the side wall of the support guide rod and the outer side wall of the support guide cylinder.

[0032] Optionally, a reminder mechanism is further included, wherein the reminder mechanism is used to remind users that the power outage is caused by the tripping of the circuit breaker, and the reminder mechanism includes:

[0033] a warning device, provided on the extension plate;

[0034] A first wire is fixedly plugged into the extension plate;

[0035] A second wire is fixedly plugged into the handle;

[0036] a first conductive plate fixedly mounted on the extension plate, the first conductive plate being electrically connected to the first conductive wire;

[0037] The second conductive plate is provided on the handle, and the second conductive plate is electrically connected to the second wire.

[0038] Optionally, the second conductive plate includes:

[0039] A conductive plate body is fixedly embedded in the handle, a movable groove is provided on the conductive plate body, the movable groove is connected to the extension groove, a supporting slide groove is provided on the conductive plate body, the supporting slide groove is connected to the movable groove, and the number of the supporting slide grooves is set to two, and the two supporting slide grooves are symmetrically arranged about the horizontal midline of the movable groove;

[0040] a third conductive plate movably disposed in the movable slot, the third conductive plate being matched with the first conductive plate;

[0041] A supporting slider, fixed on the third conductive plate;

[0042] A support spring is movably arranged in the support chute, one end of the support spring is fixedly connected to the side wall of the support slider, and the other end of the support spring is fixedly connected to the side wall of the support chute.

[0043] The beneficial effects of the present invention are as follows:

[0044] The present invention improves the structure of an existing circuit breaker. The improved circuit breaker is provided with a buffer device at the tail end of the operating handle. The buffer device can effectively absorb the impact energy of the collision during operation, thereby reducing the mechanical stress during operation and extending the service life of the circuit breaker. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 Schematic diagram of the structure of a circuit breaker mechanism according to an embodiment of the present invention;

[0046] Figure 2 The circuit breaker mechanism of the present invention Figure 1 Schematic diagram of the structure of the operating mechanism;

[0047] Figure 3 The circuit breaker mechanism of the present invention Figure 2 Schematic diagram of the partially enlarged structure;

[0048] Figure 4 The circuit breaker mechanism of the present invention Figure 3 Schematic diagram of the cross-sectional structure in the center front view;

[0049] Figure 5 The circuit breaker mechanism of the present invention Figure 2 A schematic structural diagram of the extension mechanism provided on the handle;

[0050] Figure 6 The circuit breaker mechanism of the present invention Figure 5 A magnified schematic diagram of the structure in the middle;

[0051] Figure 7 The circuit breaker mechanism of the present invention Figure 6 Schematic diagram of the partial cross-section structure from the center;

[0052] Figure 8 It is a structural schematic diagram of the second conductive plate of the circuit breaker mechanism of the present invention.

[0053] Description of Reference Numerals

[0054] Circuit breaker body 1, swing hole 2, operating mechanism 3, handle 31, rotating base 32, first rotating rod 4, connecting assembly 5, second rotating rod 51, connecting plate 52, magnet rod 53, buffer mechanism 6, fixed plate 61, buffer slot 62, first magnet block 63, second magnet block 64, telescopic buffer mechanism 7, telescopic buffer rod 71, telescopic buffer cylinder 72, telescopic buffer spring 73, rotating shaft 74, reminder mechanism 8, alarm 81, first wire 82, second wire 83, first conductive plate 84, second conductive plate 85, conductive plate body 851, movable slot 852, third conductive plate 853, support slider 855, support slide slot 856, support spring 857, extension mechanism 9, extension plate 91, extension slot 92, support guide assembly 93, support guide rod 931, support guide cylinder 932, support guide spring 933. DETAILED DESCRIPTION

[0055] In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Unless otherwise defined, the technical terms or scientific terms used herein should be the common meanings understood by people with ordinary skills in the field to which the present invention belongs. The words "including" and similar words used in this article mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects.

[0056] In view of the problems existing in the prior art, an embodiment of the present invention provides a circuit breaker mechanism, such as Figure 1 and Figure 2 As shown, the circuit breaker mechanism includes a circuit breaker body 1, and a swing hole 2 is opened on the top plate of the circuit breaker body 1, which is not limited to being opened only on the top plate. Figure 1 This is just one example and can be set as needed. I will not go into details here.

[0057] The operating mechanism 3 includes a handle 31 movably disposed within the swing hole 2 and a rotating base 32 connected to the operating mechanism 3. Specifically, the rotating base 32 is connected to a spring within the circuit breaker body 1. This connection is conventional and will not be described in detail here. It should be noted that the operating mechanism 3 is activated to restore circuit connectivity after the circuit breaker trips.

[0058] The first rotating rod 4 is fixedly inserted into the rotating base 32, preferably, fixedly inserted into the middle portion of the rotating base 32. A buffer mechanism 6 is provided within the circuit breaker body 1; a connecting assembly 5 is provided between the first rotating rod 4 and the buffer mechanism 6 and is used to connect the first rotating rod 4 and the buffer mechanism 6. When the handle 31 swings, it causes the connecting assembly 5 to rotate relative to the buffer mechanism 6. The relative rotation of the connecting assembly 5 and the buffer mechanism 6 slows the movement of the handle 31 within the swing hole 2, thereby reducing the impact force when the handle 31 collides with the wall of the swing hole 2.

[0059] During operation, the handle 31 swings left and right in the swing hole 2. Specifically, when the handle 31 swings to the left in the swing hole 2, the circuit is in a connected state, and when the handle 31 swings to the right in the swing hole 2, the circuit is in a tripped state. Regardless of whether the handle 31 swings to the left or right in the swing hole 2, the handle 31 will collide with the hole wall of the swing hole 2. The impact force can easily damage or even break the handle 31. To this end, the present invention improves the structure of the existing circuit breaker. The improved circuit breaker is provided with a buffer device at the tail end of the operating handle. The provision of the buffer device can effectively absorb the impact energy of the collision during operation, thereby reducing the mechanical stress during operation and extending the service life of the circuit breaker.

[0060] Specifically, if Figure 2 and Figure 3 As shown, the buffer mechanism 6 includes:

[0061] A fixed plate 61 is fixedly mounted on the inner side wall of the circuit breaker body 1 , and a buffer groove 62 is formed on the fixed plate 61 . The groove cavity of the buffer groove 62 is an arc-shaped structure, and the buffer groove 62 has a first tail portion and a second head portion relative to each other; a first magnet block 63 is fixedly mounted on the first tail portion; a second magnet block 64 is fixedly mounted on the second head portion, and a buffer space is provided between the second magnet block 64 and the first magnet block 63 .

[0062] Specifically, if Figure 2 and Figure 3 As shown, the connection component 5 includes:

[0063] The second rotating rod 51 has a relative second tail (which can be understood as the front end) and a second head (which can be understood as the rear end), the second tail is fixedly connected to the first rotating rod 4, and the second head is rotatably arranged on the fixed disk 61; the magnet rod 53 is movably arranged in the buffer space, and the magnetic poles of the magnet rod 53 and the first magnet block 63 and the second magnet block 64 on the side close to each other are the same; the connecting plate 52 is arranged between the magnet rod 53 and the second rotating rod 51, and is used to connect the magnet rod 53 and the second rotating rod 51.

[0064] During operation, when the handle 31 swings in the swing hole 2, the first rotating rod 4 will rotate through the rotating base 32. The rotation of the first rotating rod 4 will rotate the second rotating rod 51. The rotation of the second rotating rod 51 will drive the magnet rod 53 to move in the buffer space through the connecting plate 52. Since there is a repulsive force between the magnet rod 53 and the first magnet block 63 and the second magnet block 64, when the magnet rod 53 moves in the buffer space based on the initial position (at this position the magnet rod 53 can hover in the buffer space), the movement speed of the magnet rod 53 will be slowed down under the action of the repulsive force. Therefore, the movement speed of the handle 31 in the swing hole 2 can be reduced through the magnet rod 53, thereby reducing the impact force with the swing hole 2, thereby achieving the effect of equipment protection. It is worth noting that the structural design of the present invention is reasonable. When the handle 31 is closer to the hole wall of the swing hole 2 (the hole wall can be understood as the left wall or the right wall of the swing hole 2), the repulsive force it receives will become greater and greater. Therefore, the impact force when the handle 31 contacts the wall of the swing hole 2 can be very effective, thereby providing better protection for the equipment and extending the service life of the equipment.

[0065] In order to further increase the effect of buffering the impact force, in one embodiment, as Figure 4 As shown, the circuit breaker mechanism also includes a telescopic buffer mechanism 7 arranged in the buffer space. The telescopic buffer mechanism 7 is arranged between the first magnet block 63 and the magnet rod 53 and is used to connect the first magnet block 63 and the magnet rod 53. The telescopic buffer mechanism 7 buffers the movement speed of the magnet rod 53 in the buffer space, thereby buffering the impact force.

[0066] Specifically, if Figure 4As shown, the telescopic buffer mechanism 7 includes: a telescopic buffer rod 71 fixedly mounted on the outer ring wall of a rotating shaft 74, wherein the rotating shaft 74 is fixedly sleeved outside the magnet rod 53; a telescopic buffer tube 72 fixedly mounted on the first magnet block 63, wherein the telescopic buffer tube 72 is movably sleeved outside the telescopic buffer rod 71; and a telescopic buffer spring 73 wound around the outside of the telescopic buffer tube 72, wherein the two ends of the telescopic buffer spring 73 are respectively fixedly connected to the outer wall of the telescopic buffer rod 71 and the outer wall of the telescopic buffer tube 72. During operation, as the magnet rod 53 moves toward the first magnet block 63 or toward the second magnet block 64, the telescopic buffer rod 71 will move relative to the telescopic buffer tube 72. During this movement, the telescopic buffer spring 73 will be stretched or compressed. Due to the elastic force of the telescopic buffer spring 73 itself, it can buffer the impact force in both states. Specifically, when the magnet rod 53 approaches the first magnet block 63 , the telescopic buffer spring 73 is in a compressed state; when the magnet rod 53 approaches the second magnet block 64 , the telescopic buffer spring 73 is in a stretched state.

[0067] Of course, in other examples, the number of the telescopic buffer mechanism 7 is not limited to only one. For example, in one example, the number of the telescopic buffer mechanism 7 is two, and the two telescopic buffer mechanisms 7 are symmetrically arranged about the vertical center line of the magnet rod 53.

[0068] In the current configuration, the handle 31 has a single structure and will bear most of the impact force, so that the handle 31 will be easily damaged. In order to solve the above problem, in one embodiment, as shown in FIG. Figure 5 and Figure 6 As shown, the circuit breaker mechanism also includes an extension mechanism 9. There are two extension mechanisms 9. The two extension mechanisms 9 are respectively arranged on opposite sides of the first direction of the handle 31. The first direction is consistent with the length direction of the hole cavity of the swing hole 2. The extension mechanism 9 is used to play a buffering role when the handle 31 swings. The present invention has made a groundbreaking improvement to the structure of the handle 31. The improved handle 31 itself can play a role in buffering the impact force. In this way, the handle 31 can play a better protection role under the multiple protection of the extension mechanism 9, the connecting component 5, the buffer mechanism 6 and the telescopic buffer mechanism 7. Of course, in the specific use process, the extension mechanism 9 can be used alone to play a buffering and protective role for the handle 31; the combination structure of the connecting component 5 and the buffer mechanism 6 can be used alone to play a buffering and protective role for the handle 31; the telescopic buffer mechanism 7 can be used alone to play a buffering and protective role for the handle 31; or they can be used in pairs, or the three can work together to play a protective role. The specific settings can be made according to the use environment and will not be repeated here.

[0069] Specifically, if Figure 5 and Figure 6 As shown, the extension mechanism 9 includes: the extension plate 91 is made of elastic material; the extension groove 92 is opened on the handle 31, and the extension plate 91 is movably inserted into the extension groove 92, and a plurality of groove bodies (not shown) are opened on the groove wall of the extension groove 92, and the arrangement of the groove bodies is used to increase friction; a support guide assembly 93 is arranged in the extension groove 92, and one end of the support guide assembly 93 (which can be understood as the left end) is fixedly connected to the groove wall of the extension groove 92, and the other end of the support guide assembly 93 (which can be understood as the right end) is fixedly connected to the extension plate 91.

[0070] Further, if Figure 6 As shown, the support guide assembly 93 includes: a support guide rod 931 fixed on the extension plate 91, and the support guide rod 931 is movably arranged in the extension groove 92; a support guide cylinder 932 fixed on the groove wall of the extension groove 92, and the support guide cylinder 932 is movably sleeved outside the support guide rod 931; a support guide spring 933, which is wound around the outside of the support guide rod 931, and the two ends of the support guide spring 933 are respectively fixedly connected to the side wall of the support guide rod 931 and the outer wall of the support guide cylinder 932.

[0071] In the process of using electricity in daily life, a sudden power outage may not make the user think that the circuit breaker has tripped. Therefore, in one embodiment, Figure 5 and Figure 7 As shown, the circuit breaker mechanism further includes a reminder mechanism 8, which is used to remind users that the power outage is caused by the circuit breaker tripping.

[0072] Specifically, if Figure 5 and Figure 7 As shown, the reminder mechanism 8 includes: an alarm 81, which is provided on the extension plate 91; a first wire 82 is fixedly plugged into the extension plate 91; a second wire 83 is fixedly plugged into the handle 31; a first conductive plate 84 is fixedly provided on the extension plate 91, and the first conductive plate 84 is electrically connected to the first wire 82; a second conductive plate 85 is provided on the handle 31, and the second conductive plate 85 is electrically connected to the second wire 83.

[0073] During operation, when the circuit trips, the rightward deflection of the handle 31 causes the extension plate 91 to be pressed against the right side wall of the swing hole 2 and move downward into the extension slot 92, thereby moving the first conductive plate 84 toward the second conductive plate 85. When the second conductive plate 85 contacts the first conductive plate 84, the series circuit is completed, and the alarm 81 begins to sound. It should be noted that in one example, the power source of the alarm mechanism 8 can be a battery.

[0074] In order to avoid the first conductive plate 84 and the second conductive plate 85 from rigidly colliding, there is no certain buffer distance. In one embodiment, as shown in FIG. Figure 8 As shown, the second conductive plate 85 includes: a conductive plate body 851 fixedly embedded in the handle 31, a movable groove 852 is provided on the conductive plate body 851, and the movable groove 852 is communicated with the extension groove 92, and a supporting slide groove 856 is provided on the conductive plate body 851, and the supporting slide groove 856 is communicated with the movable groove 852, and there are two supporting slide grooves 856, which are symmetrically arranged about the horizontal center line of the movable groove 852; a third conductive plate 853, which is movably arranged in the movable groove 852, and the third conductive plate 853 is matched with the first conductive plate 84; a supporting slider 855, which is fixed on the third conductive plate 853; a supporting spring 857, which is movably arranged in the supporting slide groove 856, and one end of the supporting spring 857 is fixedly connected to the side wall of the supporting slider 855, and the other end of the supporting spring 857 is fixedly connected to the side wall of the supporting slide groove 856.

[0075] During operation, when the first conductive plate 84 contacts the third conductive plate 853, the third conductive plate 853 will move a certain distance into the movable groove 852. The existence of this movement distance is the buffer distance, which can protect the first conductive plate 84 and the second conductive plate 85, thereby extending the service life of the equipment.

[0076] While embodiments of the present invention have been described in detail above, it will be apparent to those skilled in the art that various modifications and variations of these embodiments are possible. However, it should be understood that such modifications and variations are within the scope and spirit of the present invention. Furthermore, the invention described herein is susceptible to other embodiments and may be practiced or implemented in a variety of ways.

Claims

1. A circuit breaker mechanism, characterized in that: It comprises a circuit breaker body (1), wherein a swing hole (2) is provided on the top plate of the circuit breaker body (1); An operating mechanism (3), the operating mechanism (3) comprising a handle (31) movably disposed in the swing hole (2), and a rotating base (32) connected to the operating mechanism (3); A first rotating rod (4) fixedly plugged into the rotating base (32); A buffer mechanism (6) is provided in the circuit breaker body (1); a connecting assembly (5), provided between the first rotating rod (4) and the buffer mechanism (6), and used for connecting the first rotating rod (4) and the buffer mechanism (6); When the handle (31) swings, it causes the connecting assembly (5) to rotate relative to the buffer mechanism (6); when the connecting assembly (5) and the buffer mechanism (6) rotate relative to each other, the movement speed of the handle (31) in the swing hole (2) is slowed down, thereby reducing the impact force when the handle (31) collides with the hole wall of the swing hole (2); The buffer mechanism (6) comprises: A fixed disk (61) is fixedly mounted on the inner side wall of the circuit breaker body (1); a buffer groove (62) is provided on the fixed disk (61); the groove cavity of the buffer groove (62) is an arc-shaped structure, and the buffer groove (62) has a first tail portion and a second head portion opposite to each other; A first magnet block (63) is fixedly mounted on the first tail portion; a second magnet block (64) fixedly disposed on the second head portion, with a buffer space being provided between the second magnet block (64) and the first magnet block (63); The connecting component (5) comprises: a second rotating rod (51), the second rotating rod (51) having a second tail portion and a second head portion opposite to each other, the second tail portion being fixedly connected to the first rotating rod (4), and the second head portion being rotatably disposed on the fixed disk (61); a magnet rod (53) movably disposed in the buffer space, wherein the magnet rod (53) and the first magnet block (63) and the second magnet block (64) have the same magnetic poles on the sides close to each other; a connecting plate (52) provided between the magnet rod (53) and the second rotating rod (51) and used for connecting the magnet rod (53) and the second rotating rod (51); The invention also includes a telescopic buffer mechanism (7) provided in the buffer space, wherein the telescopic buffer mechanism (7) is provided between the first magnet block (63) and the magnet rod (53) and is used to connect the first magnet block (63) and the magnet rod (53), and the telescopic buffer mechanism (7) buffers the movement speed of the magnet rod (53) in the buffer space, thereby playing a role in buffering the impact force; The telescopic buffer mechanism (7) comprises: A telescopic buffer rod (71) is fixedly mounted on the outer ring wall of the rotating shaft (74), and the rotating shaft (74) is fixedly sleeved outside the magnet rod (53); A telescopic buffer cylinder (72) is fixedly mounted on the first magnet block (63), and the telescopic buffer cylinder (72) is movably sleeved outside the telescopic buffer rod (71); A telescopic buffer spring (73) is wound around the outside of the telescopic buffer cylinder (72), and two ends of the telescopic buffer spring (73) are respectively fixedly connected to the outer side wall of the telescopic buffer rod (71) and the outer side wall of the telescopic buffer cylinder (72).

2. The circuit breaker mechanism according to claim 1, wherein: It also includes an extension mechanism (9), wherein two extension mechanisms (9) are provided, and the two extension mechanisms (9) are respectively provided on opposite sides of a first direction of the handle (31), wherein the first direction is consistent with the length direction of the cavity of the swing hole (2), and the extension mechanism (9) is used to play a buffering role when the handle (31) swings.

3. The circuit breaker mechanism according to claim 2, wherein: The extension mechanism (9) comprises: An extension plate (91), wherein the extension plate (91) is made of elastic material; An extension groove (92) is provided on the handle (31), the extension plate (91) is movably inserted into the extension groove (92), and a plurality of groove bodies are provided on the groove wall of the extension groove (92); A support guide assembly (93) is provided in the extension groove (92), one end of the support guide assembly (93) is fixedly connected to the groove wall of the extension groove (92), and the other end of the support guide assembly (93) is fixedly connected to the extension plate (91).

4. The circuit breaker mechanism according to claim 3, characterized in that: The support guide assembly (93) comprises: A support guide rod (931) is fixedly disposed on the extension plate (91), and the support guide rod (931) is movably disposed in the extension slot (92); A support guide cylinder (932) is fixedly mounted on the groove wall of the extension groove (92), and the support guide cylinder (932) is movably sleeved outside the support guide rod (931); A support guide spring (933) is wound around the outside of the support guide rod (931), and two ends of the support guide spring (933) are respectively fixedly connected to the side wall of the support guide rod (931) and the outer side wall of the support guide cylinder (932).

5. The circuit breaker mechanism according to claim 3, wherein: It also includes a reminder mechanism (8), which is used to remind users that the power outage is caused by the tripping of the circuit breaker. The reminder mechanism (8) includes: A warning device (81) is provided on the extension plate (91); A first wire (82) is fixedly plugged into the extension plate (91); A second wire (83) is fixedly plugged into the handle (31); a first conductive plate (84) fixedly disposed on the extension plate (91), wherein the first conductive plate (84) is electrically connected to the first conductive wire (82); A second conductive plate (85) is provided on the handle (31), and the second conductive plate (85) is electrically connected to the second wire (83).

6. The circuit breaker mechanism according to claim 5, characterized in that: The second conductive plate (85) comprises: A conductive plate body (851) is fixedly embedded in the handle (31), a movable groove (852) is provided on the conductive plate body (851), the movable groove (852) and the extension groove (92) are connected to each other, a supporting slide groove (856) is provided on the conductive plate body (851), the supporting slide groove (856) and the movable groove (852) are connected to each other, and there are two supporting slide grooves (856), and the two supporting slide grooves (856) are symmetrically arranged about the horizontal midline of the movable groove (852); a third conductive plate (853) movably disposed in the movable slot (852), the third conductive plate (853) being matched with the first conductive plate (84); A supporting slider (855) is fixedly mounted on the third conductive plate (853); A support spring (857) is movably disposed in the support chute (856), one end of the support spring (857) is fixedly connected to the side wall of the support slider (855), and the other end of the support spring (857) is fixedly connected to the side wall of the support chute (856).

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