Circuit breaker

By introducing a strong pulling mechanism into the circuit breaker and using the handle to drive the movement of the strong pulling member, the problem of the circuit breaker being pulled out when the closing state is solved, safe and reliable circuit breaker operation is achieved, and structural design is simplified.

CN223296746UActive Publication Date: 2025-09-02CHINT LOW VOLTAGE ELECTRICAL TECH CO LTD
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Patent Information

Application Number
CN202422395904.0
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-09-30
Publication Date
2025-09-02
Estimated Expiration
2034-09-30

AI Technical Summary

Technical Problem

The existing circuit breaker is easily pulled out of the installation position when the closing state, lacks an effective prevention mechanism, and the existing prevention mechanism structure is complex.

Method used

The anti-strength pulling mechanism is adopted, including the anti-strength pulling member and the second resetting member. The protrusion of the anti-strength pulling member is driven to move outside or inside the shell through the sliding of the handle, ensuring that the circuit breaker cannot be pulled out in the closed state, and a V-shaped shrapnel is used as the second resetting member to simplify the structure.

Benefits of technology

It effectively prevents the circuit breaker from being pulled out when the switch is closed, improving the power safety and personal safety of the operator, with a simple structure and small space occupancy.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the field of low-voltage electric appliances, in particular to a circuit breaker, which is characterized in that a handle slides to be switched between a handle closing position and a handle opening position so as to drive the circuit breaker to be closed and opened, and when the handle slides to the handle closing position, the handle is opened. When the handle slides to a switching-off position, the anti-forcible-drawing piece is driven to move to enable at least part of the protrusion of the anti-forcible-drawing piece to protrude out of the shell through the second locking hole, and when the handle slides to the switching-off position, the anti-forcible-drawing piece moves to enable the protrusion of the anti-forcible-drawing piece to move towards the interior of the shell; the strong drawing prevention piece is rotationally arranged between the handle and the locking side wall of the shell; the safety of the circuit breaker is better.
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Description

Technical Field

[0001] The utility model relates to the field of low-voltage electrical appliances, in particular to a circuit breaker. Background Art

[0002] A circuit breaker is a switching device used to disconnect and connect load circuits, and to cut off fault circuits to prevent accidents from expanding, thereby ensuring the safe operation of load circuits.

[0003] Existing circuit breakers lack a mechanism to prevent them from being pulled out of the installation position in the closed state, or although a corresponding mechanism is provided, the structure is complicated. Utility Model Content

[0004] The purpose of the present invention is to overcome at least one defect of the prior art and provide a circuit breaker with better safety.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A circuit breaker includes a housing, a handle slidably disposed thereon, and an anti-force pulling mechanism. The handle slides between a handle closing position and a handle opening position to drive the circuit breaker to close and open. The anti-force pulling mechanism includes an anti-force pulling member, which includes an anti-force pulling member protrusion. The housing includes a second locking hole disposed on a locking side wall thereof for engaging with the anti-force pulling member protrusion. When the handle slides to the handle closing position, the anti-force pulling member is driven to move so that at least a portion of the anti-force pulling member protrusion protrudes outside the housing through the second locking hole. When the handle slides to the opening position, the anti-force pulling member moves so that the anti-force pulling member protrusion moves into the housing.

[0007] The anti-strong pulling member is rotatably arranged between the handle and the locking side wall of the shell.

[0008] Furthermore, the handle is arranged to slide along the direction d1, the rotation axis direction of the anti-strong pulling member is the same as the direction d3, and the direction d1 and the direction d3 are perpendicular to each other.

[0009] Furthermore, the anti-force pulling mechanism also includes a second reset member; when the handle slides to the handle opening position, the second reset member drives the anti-force pulling member to rotate so that the protrusion of the anti-force pulling member moves into the housing.

[0010] Furthermore, the second restoring member is arranged between the anti-strong pulling member and the locking side wall.

[0011] Furthermore, the second restoring member is a V-shaped spring piece, which includes a second restoring member inner plate and a second restoring member outer plate. The second restoring member inner plate cooperates with the anti-strong pulling member, and the second restoring member outer plate cooperates with the locking side wall.

[0012] Furthermore, the anti-force pulling member also includes an anti-force pulling member mounting portion and an anti-force pulling member connecting portion, one end of the anti-force pulling member connecting portion is connected to the anti-force pulling member mounting portion and the other end is provided with an anti-force pulling member protrusion, the anti-force pulling member is rotatably set through the anti-force pulling member mounting portion, and the side of the anti-force pulling member connecting portion facing the locking side wall is provided with an anti-force pulling member limiting groove, and the inner plate of the second reset member is arranged in the anti-force pulling member limiting groove.

[0013] Furthermore, the handle includes a first locking protrusion, and the anti-force pulling member includes an anti-force pulling member locking surface; when the handle slides to the handle closing position, the first locking protrusion presses against the anti-force pulling member locking surface to drive the anti-force pulling member to rotate, so that the anti-force pulling member protrusion protrudes outside the shell through the second locking hole.

[0014] Furthermore, the anti-force pulling member also includes an auxiliary unlocking portion. When the handle slides to the opening position and continues to slide, the first locking protrusion presses the auxiliary unlocking portion so that the anti-force pulling member has a rotation tendency to drive the anti-force pulling member protrusion to move toward the inside of the shell.

[0015] Furthermore, the auxiliary unlocking portion is an auxiliary unlocking protrusion arranged on the anti-force pulling member mounting portion of the anti-force pulling member, and the first locking protrusion drives the auxiliary unlocking protrusion to rotate around the rotation center of the anti-force pulling member to rotate the anti-force pulling member, thereby causing the anti-force pulling member protrusion to move toward the inside of the shell.

[0016] Furthermore, when the handle slides to the handle opening position, the anti-force pulling member is driven to rotate so that the protrusion of the anti-force pulling member moves toward the inside of the housing.

[0017] Furthermore, the anti-strong pulling member further comprises an anti-strong pulling member unlocking portion, an anti-strong pulling member mounting portion and an anti-strong pulling member connecting portion which are connected in sequence, the anti-strong pulling member being rotatably arranged by the anti-strong pulling member mounting portion, one end of the anti-strong pulling member connecting portion being connected to the anti-strong pulling member mounting portion and the other end being provided with an anti-strong pulling member protrusion;

[0018] The handle further comprises a first unlocking protrusion, and when the handle slides to the handle opening position, the first unlocking protrusion presses the unlocking portion of the anti-force pulling member to drive the anti-force pulling member to rotate, so that the anti-force pulling member protrusion moves toward the inside of the housing.

[0019] Furthermore, the housing also includes an anti-force pulling member mounting platform arranged on the inner side of the locking side wall, and the anti-force pulling member mounting platform is provided with an anti-force pulling member shaft hole; the anti-force pulling member also includes an anti-force pulling member shaft, and the anti-force pulling member shaft is rotatably inserted into the anti-force pulling member shaft hole, and the anti-force pulling member and the anti-force pulling member mounting platform are arranged side by side along the axial direction of the anti-force pulling member shaft.

[0020] The circuit breaker of the present invention is installed in the installation position and in place. After the handle slides to the handle closing position to close the circuit breaker, the anti-force pulling member moves under the drive of the handle so that at least a portion of the anti-force pulling member protrusion protrudes from the outside of the shell and enters the locking hole of the shell of the installation position. The anti-force pulling member protrusion cooperates with the shell of the installation position to prevent the circuit breaker from being pulled out of the installation position in the closed state. After the handle slides to the handle opening position to open the circuit breaker, the anti-force pulling member resets and moves the anti-force pulling member protrusion into the shell. The anti-force pulling member protrusion and the shell of the installation position are released from the limiting cooperation, and the circuit breaker can be pulled out of the installation position. The anti-force pulling mechanism ensures the safety and reliability of electricity use and the personal safety of the operator.

[0021] In addition, the second restoring member is a V-shaped spring piece, which has a simple structure, occupies a small space, and is easy to install. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural diagram of the switch device of the utility model;

[0023] Figure 2 This is a schematic structural diagram of the switch device of the present invention with the housing removed;

[0024] Figure 3 It is a structural diagram of the shell of the utility model;

[0025] Figure 4 It is a schematic diagram of the structure of the handle of the utility model under two viewing angles;

[0026] Figure 5 This is a schematic diagram of the structure of the anti-strong closing component of the utility model;

[0027] Figure 6 The utility model is a strong closing device in the strong closing device locking position (such as Figure 6 (61)) and the unlocked position of the anti-strong closing member (as shown in Figure 6 (62) Schematic diagram of the structure;

[0028] Figure 7 This is an exploded view of the anti-strong pulling mechanism of the utility model;

[0029] Figure 8 The handle of the utility model is in the handle closing position (such as Figure 8 (81)) and the handle opening position (as shown Figure 8 (82) shows a schematic diagram of a structure of an implementation method of the anti-strong pulling mechanism;

[0030] Figure 9 The handle of the utility model is in the handle closing position (such as Figure 9 (91)) and the handle opening position (as shown Figure 9 (92) shows a structural diagram of another implementation method of the anti-strong pulling mechanism.

[0031] Description of Reference Numerals

[0032] The shell w of the mounting position;

[0033] Housing 1a, first outer half shell 1-1a, anti-strong pulling member mounting platform 1-12a, anti-strong pulling member shaft hole 1-120a, second outer half shell 1-2a, locking side wall 1-21a, first matching portion 1-22a, first locking hole 1-7a, second locking hole 1-8a;

[0034] Handle 1b, first locking protrusion 1-6b, first unlocking protrusion 1-8b, handle locking wall 1-9b, handle avoidance hole 1-10b;

[0035] Anti-forced closing mechanism 4b, anti-forced closing member 4-1b, anti-forced closing member protrusion 4-11b, anti-forced closing member chamfer 4-111b, anti-forced closing member limiting portion 4-12b, anti-forced closing member locking portion 4-13b, first reset member 4-2b;

[0036] Anti-force pulling mechanism 5b, anti-force pulling member 5-1b, anti-force pulling member protrusion 5-11b, anti-force pulling member connecting portion 5-12b, anti-force pulling member mounting portion 5-13b, anti-force pulling member shaft 5-14b, anti-force pulling member limiting groove 5-15b, auxiliary unlocking portion 5-16b, anti-force pulling member locking surface 5-17b, anti-force pulling member unlocking portion 5-18b, second reset member 5-2b, second reset member inner plate 5-21b, second reset member outer plate 5-22b;

[0037] Operating mechanism 7b;

[0038] Contact system 11b, moving contact 11-1b, static contact 11-2b. DETAILED DESCRIPTION

[0039] The following embodiments are combined with the accompanying drawings to further illustrate the specific implementation of the switch device of the present invention. The switch device of the present invention is not limited to the description of the following embodiments.

[0040] The utility model discloses a switch device, specifically a circuit breaker. Further, the circuit breaker is a plug-in circuit breaker. Further, the circuit breaker is a 1U circuit breaker.

[0041] like Figure 1-2The figure shows an embodiment of the switch device of the present invention. The switch device of this embodiment is a single-pole switch device, which includes a housing and a first circuit and a second circuit disposed within the housing. The first circuit is a negative circuit, and the first circuit preferably includes a breakpoint (e.g., a breakpoint that can be opened and closed, composed of a moving contact and a static contact), that is, the conduction and disconnection of the first circuit can be controlled by controlling the closing and opening of the breakpoint. The second circuit is a positive circuit, and the second circuit is preferably a straight-through circuit. "Straight-through circuit" means that there is no breakpoint (e.g., a breakpoint that can be opened and closed, composed of a moving contact and a static contact) in the second circuit, and it always remains in a conducting state. Furthermore, in actual use of the switch device of this embodiment, the two ends of the first circuit are used to connect the negative conductor on the power supply side and the negative conductor on the load side, and the two ends of the second circuit are used to connect the positive conductor on the power supply side and the positive conductor on the load side, respectively.

[0042] Furthermore, the length direction, width direction and height direction of the switch device of the present invention are direction d1, direction d2 and direction d3 respectively, and direction d1, direction d2 and direction d3 are perpendicular to each other; the length direction, width direction and height direction of the shell are respectively the same as direction d1, direction d2 and direction d3.

[0043] Further, such as Figure 1 and 3 As shown, the housing includes an outer shell 1a, and the first and second circuits are both disposed within the outer shell 1a. The length, width, and height of the outer shell 1a are aligned with directions d1, d2, and d3, respectively. Specifically, the outer shell 1a includes a first outer half shell 1-1a and a second outer half shell 1-2a that are assembled relative to each other along direction d2.

[0044] Further, such as Figure 2As shown, the first circuit includes an operating system, a contact system 11b and an arc extinguishing system, the operating system includes a handle 1b and an operating mechanism 7b, the handle 1b is slidably arranged in the housing (specifically, the handle 1b is slidably arranged in the housing 1a) and switches between the handle closing position and the handle opening position by reciprocating sliding, the contact system 11b includes a moving contact 11-1b and a static contact 11-2b used in conjunction with each other, the handle 1b is transmission-connected to the operating mechanism 7b, and the operating mechanism 7b is transmission-connected to the moving contact 11-1b; when the handle 1b slides to the handle closing position, the handle 1b switches to the handle opening position through the operating mechanism 7b drives the moving contact 11-1b to the closed position, closing it with the static contact 11-2b. This completes the closing operation of the switchgear, and the operating mechanism 7b and the switchgear switch from the open state to the closed state. When the handle 1b slides to the handle-open position, the handle 1b drives the moving contact 11-1b to the disconnected position via the operating mechanism 7b, disconnecting it from the static contact 11-2. This completes the opening operation of the switchgear, and the operating mechanism 7b and the switchgear switch from the closed state to the open state. The arc extinguishing system cooperates with the contact system 11b to extinguish the arc generated by the closing and opening of the contact system 11b. The handle 1b is pressed by an external force and slides into the housing 1a to switch to the handle-closed position. The handle 1b is pulled by an external force and slides out of the housing 1a to switch to the handle-open position.

[0045] Further, such as Figure 2 As shown, the moving contact 11 - 1b and the static contact 11 - 2b are arranged opposite to each other along the direction d2.

[0046] like Figure 1-6 As shown, the switch device of the present invention further includes an anti-forced closing mechanism 4b, which is used to prevent the switch device of the present invention from closing when the switch device of the present invention is not installed in the installation position or is installed in the installation position but not installed in place.

[0047] The anti-strong closing mechanism 4b includes an anti-strong closing member 4-1b and a first reset member 4-2b arranged to move linearly. The anti-strong closing member 4-1b has an anti-strong closing member unlocking position and an anti-strong closing member locking position. The anti-strong closing member 4-1b includes an anti-strong closing member protrusion 4-11b. The housing 1a includes a first locking hole 1-7a. The first reset member 4-2b acts on the anti-strong closing member 4-1b to make the anti-strong closing member protrusion 4-11b have a tendency to move toward the anti-strong closing member locking position. When the anti-strong closing member 4-1b is in the anti-strong closing member locking position, At least part of the anti-strong closing member protrusion 4-11b protrudes outside the housing 1a through the first locking hole 1-7a and the anti-strong closing member 4-1b is limited by the button 1b to prevent the handle 1b from sliding and driving the switch device to close. When the anti-strong closing member protrusion 4-11b (specifically, the part of the anti-strong closing member protrusion 4-11b protruding outside the housing 1a) is squeezed by an external force to move the anti-strong closing member 4-1b to the anti-strong closing member unlocking position, the anti-strong closing member 4-1b and the handle 1b are released from the limited cooperation, allowing the handle 1b to slide and drive the switch device to close. Furthermore, the movement direction of the anti-strong closing member 4-1b is perpendicular to the sliding direction of the handle 1b (direction d1), and the anti-strong closing member 4-1b preferably slides along the direction d3.

[0048] When the switch device of the present invention is not installed in the installation position, the anti-force closing member 4-1b is in the anti-force closing member locking position, preventing the handle 1b from sliding and closing the switch device of the present invention; when the switch device of the present invention is in the process of being installed in the installation position and is not installed in place, the anti-force closing member 4-1b is always kept in the anti-force closing member locking position, preventing the handle 1b from sliding and closing the switch device of the present invention; after the switch device of the present invention is installed in the installation position and is installed in place, the housing w of the installation position squeezes the anti-force closing member protrusion 4-11b, causing the anti-force closing member 4-1b to move to the anti-force closing member unlocking position, then the anti-force closing member 4-1b and the handle 1b are released from the limit, and the handle 1b is allowed to slide and drive the switch device to close. In general, the anti-force closing mechanism 4b prevents the switch device of the present invention from closing when it is not installed in the installation position and when it is in the process of being installed in the installation position and is not installed in place, thereby ensuring the personal safety of the operator. The "installation position" refers to the position in the cabinet used to install the switch device. The cabinet can be, for example, a switch cabinet, a control cabinet, a distribution cabinet, etc., and the "shell w of the installation position" refers to the cabinet itself used to install the switch device.

[0049] Specifically, such as Figure 1As shown, the housing 1a further includes a locking side wall 1-21a, and the first locking hole 1-7a is provided on the locking side wall 1-21a. Furthermore, the locking side wall 1-21a is perpendicular to the direction d3, that is, the plane where the locking side wall 1-21a is located is perpendicular to the direction d3, and the corresponding locking side wall 1-21a is parallel to the direction d1 and the direction d2.

[0050] Specifically, such as Figure 4 、 6As shown, the anti-strong closing member 4-1b also includes an anti-strong closing member locking portion 4-13b connected to the anti-strong closing member protrusion 4-11b, and the handle 1b includes a handle avoidance hole 1-10b arranged at one end thereof, and a side wall of the handle avoidance hole 1-10b is a handle locking wall 1-9b; when the anti-strong closing member 4-1b is in the anti-strong closing member unlocking position, the anti-strong closing member locking portion 4-13b is opposite to the handle avoidance hole 1-10b, and when the handle 1b is driven by an external force to slide to drive the switch device of the utility model to close, the anti-strong closing member locking portion 4-13b enters the handle avoidance hole 1-10b; when the anti-strong closing member 4-1b is in the anti-strong closing member locking position, the anti-strong closing member locking portion 4-13b is relatively limited and cooperates with the handle locking wall 1-9b to prevent the handle 1b from sliding and driving the switch device of the utility model to close. Furthermore, the anti-strong closing member locking portion 4-13b is connected to one end of the anti-strong closing member protrusion 4-11b and is perpendicular to the moving direction of the anti-strong closing member 4-1b, and the other end of the anti-strong closing member protrusion 4-11b is used to protrude from the shell 1a through the first locking hole 1-7a of the shell 1a, and the anti-strong closing member 4-1b preferably also includes an anti-strong closing member limiting portion 4-12b, and the anti-strong closing member limiting portion 4-12b and the anti-strong closing member locking portion 4-13b are connected to the same end of the anti-strong closing member protrusion 4-11b and are located on both sides of the anti-strong closing member protrusion 4-11b (anti-strong closing member locking portion 4-13b). The fixed part 4-13b and the anti-force closing member limiting part 4-12b are preferably located on both sides of the anti-force closing member protrusion 4-11b in the direction d1. When the anti-force closing member 4-1b is in the anti-force closing member locking position, the anti-force closing member locking part 4-13b and the anti-force closing member limiting part 4-12b are both limitedly matched with the side wall of the housing 1a (i.e., the locking side wall 1-21a). The anti-force closing member locking part 4-13b and the anti-force closing member limiting part 4-12b are located between the handle 1b and the locking side wall 1-21a to prevent the anti-force closing member 4-1b from falling out through the first locking hole 1-7a. Furthermore, the first reset member 4-2b is a compression spring, the anti-force closing member protrusion 4-11b is provided with an anti-force closing member spring hole, the housing 1a is provided with a first mating portion 1-22a, one end of the first reset member 4-2b is placed in the anti-force closing member spring hole and the other end is mated with the first mating portion 1-22a. Furthermore, the first mating portion 1-22a is spaced apart from the locking side wall 1-21a, and the first mating portion 1-22a and the locking side wall 1-21a are respectively located on both sides of the handle 1b in direction d3. Furthermore, the handle avoidance hole 1-10b and the handle installation cavity 1-7b are respectively provided at both ends of the handle 1b along direction d2 and on both sides of the handle connecting protrusion 1-5b. Furthermore, the anti-strong closing member protrusion 4-11b protruding from the outer shell 1a is provided with an anti-strong closing member chamfer structure 4-111b at one end, which facilitates the shell w in the installation position to squeeze the anti-strong closing member protrusion 4-11b to move the anti-strong closing member 4-1b to the anti-strong closing member unlocking position.

[0051] Further, such as Figure 1-2 As shown in , 4, 7-9, the switch device of the present invention also includes an anti-forced pulling mechanism 5b. After the switch device of the present invention is installed in the installation position, the anti-forced pulling mechanism 5b is used to prevent the switch device of the present invention from being pulled out of the installation position in the closed state.

[0052] The anti-force pulling mechanism 5b includes an anti-force pulling member 5-1b, and the anti-force pulling member 5-1b includes an anti-force pulling member protrusion 5-11b. The housing 1a includes a second locking hole 1-8a arranged on its locking side wall 1-21a for cooperating with the anti-force pulling member protrusion 5-11b; when the handle 1b slides to the handle closing position, that is, when the switch device of the present invention is closed, the anti-force pulling member 5-1b is driven to move so that at least part of the anti-force pulling member protrusion 5-11b protrudes outside the housing 1a through the second locking hole 1-8a, and when the handle 1b slides to the handle opening position, the anti-force pulling member 5-1b is reset so that the anti-force pulling member protrusion 5-11b moves into the housing 1a.

[0053] The switch device of the present invention is installed in the installation position and in place, and the handle 1b slides to the handle closing position to close the switch device of the present invention, and the anti-force pulling member 5-1b moves under the drive of the handle 1b so that at least part of the anti-force pulling member protrusion 5-11b protrudes outside the shell 1a and enters the locking hole of the shell w of the installation position, and the anti-force pulling member protrusion 5-11b cooperates with the shell w of the installation position to prevent the switch device of the present invention from being pulled out of the installation position in the closed state; after the handle 1b slides to the handle opening position to open the switch device of the present invention, the anti-force pulling member 5-1b resets so that the anti-force pulling member protrusion 5-11b moves into the shell 1a, so that the anti-force pulling member protrusion 5-11b releases the limit cooperation with the shell w of the installation position, and the switch device of the present invention can be pulled out of the installation position; the anti-force pulling mechanism 5b ensures the safety and reliability of electricity use and ensures the personal safety of the operator.

[0054] Furthermore, the anti-strong pulling member 5-1b is rotatably arranged between the handle 1b and the locking side wall 1-21a, which is easy to install and reliable in operation. It should be noted that the anti-strong pulling member 5-1b is not limited to being rotatable, for example, the anti-strong pulling member 5-1b can also be moved as a whole.

[0055] Furthermore, the second locking hole 1 - 8a and the first locking hole 1 - 7a are arranged side by side and spaced apart on the locking side wall 1 - 21a along the direction d2.

[0056] like Figure 7-8 As shown, this is an implementation of the anti-strong pulling mechanism 5b:

[0057] The anti-force pull mechanism 5b also includes a second reset member 5-2b. When the handle 1b slides to the handle-off position, the second reset member 5-2b drives the anti-force pull member 5-1b to move (in this embodiment, the second reset member 5-2b drives the anti-force pull member 5-1b to rotate), causing the anti-force pull member protrusion 5-11b to move into the housing 1a. Furthermore, the second reset member 5-2b is disposed between the anti-force pull member 5-1b and the locking side wall 1-21a.

[0058] Furthermore, the second reset member 5-2b is a V-shaped spring piece, which includes a second reset member inner plate 5-21b and a second reset member outer plate 5-22b. The second reset member inner plate 5-21b cooperates with the anti-strong pull-out member 5-1b, and the second reset member outer plate 5-22b cooperates with the locking side wall 1-21a. The second reset member 5-2b has a simple structure and occupies a small space. Furthermore, the anti-force pulling member 5-1b also includes an anti-force pulling member mounting portion 5-13b and an anti-force pulling member connecting portion 5-12b, one end of the anti-force pulling member connecting portion 5-12b is connected to the anti-force pulling member mounting portion 5-13b and the other end is provided with an anti-force pulling member protrusion 5-11b, the anti-force pulling member 5-1b is rotatably set through the anti-force pulling member mounting portion 5-13b, and the side of the anti-force pulling member connecting portion 5-12b facing the locking side wall 1-21a is provided with an anti-force pulling member limiting groove 5-15b, and the second reset member inner plate 5-21b is arranged in the anti-force pulling member limiting groove 5-15b.

[0059] Further, such as Figure 4 As shown in (41), the handle 1b includes a first locking protrusion 1-6b, and the anti-force pull member 5-1b includes an anti-force pull member locking surface 5-17b; when the handle 1b slides to the handle closing position, the first locking protrusion 1-6b presses against the anti-force pull member locking surface 5-17b to drive the anti-force pull member 5-1b to rotate, so that the anti-force pull member protrusion 5-11b protrudes outside the housing 1a through the second locking hole 1-8a. Furthermore, the anti-force pull member locking surface 5-17b is provided on the anti-force pull member connecting portion 5-12b, and the anti-force pull member locking surface 5-17b and the anti-force pull member protrusion 5-11b are respectively located on both sides of the anti-force pull member connecting portion 5-12b.

[0060] Furthermore, the anti-force-pulling member 5-1b also includes an auxiliary unlocking portion 5-16b. When the handle 1b slides to the opening position and continues to slide, the first locking protrusion 1-6b drives the auxiliary unlocking portion 5-16b to rotate around the rotation center of the anti-force-pulling member 5-1b, thereby rotating the anti-force-pulling member 5-1b, thereby causing the anti-force-pulling member protrusion 5-11b to move toward the inside of the shell 1a. Therefore, after the switch device of the present invention is opened, the anti-force-pulling member protrusion 5-11b and the shell w of the installation position may have friction, so that the anti-force-pulling member protrusion 5-11b cannot move toward the shell 1a. The first locking protrusion 1-6b cooperates with the auxiliary unlocking portion 5-16b to reset the anti-force-pulling member 5-1b, so that the switch device of the present invention can be successfully pulled out from the installation position.

[0061] Specifically, when the handle 1b slides to the opening position and continues to slide, the first locking protrusion 1-6b presses against the auxiliary unlocking portion 5-16b, so that the anti-force pulling member 5-1b has a rotational tendency to drive the anti-force pulling member protrusion 5-11b to move toward the inside of the outer shell 1a, that is, the first locking protrusion 1-6b presses against the auxiliary unlocking portion 5-16b to drive the anti-force pulling member 5-1b to rotate, and the anti-force pulling member protrusion 5-11b moves toward the inside of the outer shell 1a under the drive of the anti-force pulling member 5-1b.

[0062] Furthermore, the auxiliary unlocking portion 5-16b is an auxiliary unlocking protrusion provided on the anti-force pulling member mounting portion 5-13b, and the first locking protrusion 1-6b presses the auxiliary unlocking protrusion to rotate the anti-force pulling member 5-1b so that the anti-force pulling member protrusion 5-11b moves toward the inside of the housing 1a.

[0063] Further, such as Figure 3 、 7 As shown, the anti-force pulling member 5-1b also includes an anti-force pulling member shaft 5-14b, one end of which is connected to the anti-force pulling member mounting portion 5-13b; the housing 1a also includes an anti-force pulling member mounting platform 1-12a disposed on the inner side of the locking side wall 1-21a, and the anti-force pulling member mounting platform 1-12a is provided with an anti-force pulling member shaft hole 1-120a; the anti-force pulling member shaft 5-14b is rotatably inserted into the anti-force pulling member shaft hole 1-120a, and the anti-force pulling member 5-1b and the anti-force pulling member mounting platform 1-12a are arranged side by side along the axial direction of the anti-force pulling member shaft 5-14b. Furthermore, the rotation axis direction of the anti-force pulling member 5-1b is the same as the direction d2.

[0064] like Figure 9 FIG. 5 shows another implementation of the anti-strong pulling mechanism 5b. The difference between this implementation and the previous implementation is that:

[0065] When the handle 1b slides to the handle-open position, the anti-force pull member 5-1b is driven to rotate, causing the anti-force pull member protrusion 5-11b to move into the housing 1a, rather than the second reset member 5-2b driving the anti-force pull member 5-1b to move the anti-force pull member protrusion 5-11b into the housing 1a. The anti-force pull member 5-1b also does not have an auxiliary unlocking portion or a structure that cooperates with the second reset member 5-2b. This implementation of the anti-force pull mechanism 5b eliminates the need for a second reset member 5-2b, reduces the number of parts, and simplifies assembly.

[0066] The anti-strong pulling member 5-1b includes an anti-strong pulling member unlocking portion 5-18b, an anti-strong pulling member mounting portion 5-13b and an anti-strong pulling member connecting portion 5-12b which are connected in sequence. The anti-strong pulling member 5-1b is rotatably arranged through the anti-strong pulling member mounting portion 5-13b. One end of the anti-strong pulling member connecting portion 5-12b is connected to the anti-strong pulling member mounting portion 5-13b and the other end is provided with an anti-strong pulling member protrusion 5-11b; Figure 4 As shown in (42), the handle 1b also includes a first unlocking protrusion 1-8b. When the handle 1b slides to the handle opening position, the first unlocking protrusion 1-8b presses against the unlocking portion 5-18b of the anti-force pull member and drives the anti-force pull member 5-1b to rotate, so that the anti-force pull member protrusion 5-11b moves into the housing 1a. Furthermore, the unlocking portion 5-18b of the anti-force pull member is offset to one side of the anti-force pull member connecting portion 5-12b along the rotation axis of the anti-force pull member 5-1b (i.e., direction d2); the first unlocking protrusion 1-8b is offset to one side of the first locking protrusion 1-6b along the rotation axis direction of the anti-force pull member 5-1b.

[0067] Furthermore, the anti-strong pulling mechanism 5b and the handle 1b are arranged side by side along the direction d3.

[0068] Furthermore, the anti-force closing mechanism 4b and the handle 1b are arranged side by side along the direction d1.

[0069] Furthermore, the anti-force pulling mechanism 5b and the anti-force closing mechanism 4b are arranged side by side along the direction d2.

[0070] It should be noted that in the description of this utility model, the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, or are conventionally placed directions or positional relationships during use. They are intended solely for ease of description and do not imply that the devices or components referred to must have a specific direction. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are used solely for distinction and description and should not be construed as indicating relative importance.

[0071] The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and the specific implementation of the present invention cannot be considered to be limited to these descriptions. For those skilled in the art of the present invention, without departing from the concept of the present invention, several simple deductions or substitutions can be made, which should be considered to fall within the scope of protection of the present invention.

Claims

1. A circuit breaker, comprising a housing (1a), a handle (1b) slidably arranged thereon, and an anti-force pulling mechanism (5b), wherein the handle (1b) drives the circuit breaker to close and open by sliding between a handle closing position and a handle opening position, the anti-force pulling mechanism (5b) comprising an anti-force pulling member (5-1b), the anti-force pulling member (5-1b) comprising an anti-force pulling member protrusion (5-11b), and the housing (1a) comprising a locking side wall (1-21a) thereof for A second locking hole (1-8a) cooperates with the anti-force pulling member protrusion (5-11b); when the handle (1b) slides to the handle closing position, the anti-force pulling member (5-1b) is driven to move so that at least a portion of the anti-force pulling member protrusion (5-11b) protrudes outside the housing (1a) through the second locking hole (1-8a); and when the handle (1b) slides to the opening position, the anti-force pulling member (5-1b) moves so that the anti-force pulling member protrusion (5-11b) moves into the housing (1a); Its characteristics are: The anti-strong pulling member (5-1b) is rotatably arranged between the handle (1b) and the locking side wall (1-21a) of the housing (1a).

2. The circuit breaker according to claim 1, wherein: The handle (1b) is arranged to slide along the direction d1, the rotation axis direction of the anti-strong pulling member (5-1b) is the same as the direction d3, and the direction d1 and the direction d3 are perpendicular to each other.

3. The circuit breaker according to claim 1, wherein: The anti-force pulling mechanism (5b) further comprises a second reset member (5-2b); when the handle (1b) slides to the handle opening position, the second reset member (5-2b) drives the anti-force pulling member (5-1b) to rotate so that the anti-force pulling member protrusion (5-11b) moves into the housing (1a).

4. The circuit breaker according to claim 3, wherein: The second restoring member (5-2b) is arranged between the anti-strong pulling member (5-1b) and the locking side wall (1-21a).

5. The circuit breaker according to claim 4, characterized in that: The second reset member (5-2b) is a V-shaped spring piece, comprising a second reset member inner plate (5-21b) and a second reset member outer plate (5-22b); the second reset member inner plate (5-21b) cooperates with the anti-strong pulling member (5-1b), and the second reset member outer plate (5-22b) cooperates with the locking side wall (1-21a).

6. The circuit breaker according to claim 5, characterized in that: The anti-force pulling member (5-1b) further comprises an anti-force pulling member mounting portion (5-13b) and an anti-force pulling member connecting portion (5-12b); one end of the anti-force pulling member connecting portion (5-12b) is connected to the anti-force pulling member mounting portion (5-13b) and the other end is provided with an anti-force pulling member protrusion (5-11b); the anti-force pulling member (5-1b) is rotatably arranged through the anti-force pulling member mounting portion (5-13b); a side of the anti-force pulling member connecting portion (5-12b) facing the locking side wall (1-21a) is provided with an anti-force pulling member limiting groove (5-15b); and the second reset member inner plate (5-21b) is arranged in the anti-force pulling member limiting groove (5-15b).

7. The circuit breaker according to claim 1, wherein: The handle (1b) includes a first locking protrusion (1-6b), and the anti-force pulling member (5-1b) includes an anti-force pulling member locking surface (5-17b); when the handle (1b) slides to the handle closing position, the first locking protrusion (1-6b) presses against the anti-force pulling member locking surface (5-17b) to drive the anti-force pulling member (5-1b) to rotate, so that the anti-force pulling member protrusion (5-11b) protrudes outside the housing (1a) through the second locking hole (1-8a).

8. The circuit breaker according to claim 7, wherein: The anti-force pulling member (5-1b) further comprises an auxiliary unlocking portion (5-16b); when the handle (1b) slides to the opening position and continues to slide, the first locking protrusion (1-6b) presses against the auxiliary unlocking portion (5-16b), causing the anti-force pulling member (5-1b) to have a rotational tendency to drive the anti-force pulling member protrusion (5-11b) to move toward the interior of the housing (1a).

9. The circuit breaker according to claim 8, wherein: The auxiliary unlocking portion (5-16b) is an auxiliary unlocking protrusion provided on the anti-force pulling member mounting portion (5-13b) of the anti-force pulling member (5-1b). The first locking protrusion (1-6b) drives the auxiliary unlocking protrusion to rotate around the rotation center of the anti-force pulling member (5-1) to rotate the anti-force pulling member (5-1b), thereby causing the anti-force pulling member protrusion (5-11b) to move toward the inside of the housing (1a).

10. The circuit breaker according to claim 1, wherein: When the handle (1b) slides to the handle opening position, the anti-force pulling piece (5-1b) is driven to rotate so that the anti-force pulling piece protrusion (5-11b) moves toward the inside of the housing (1a).

11. The circuit breaker according to claim 10, wherein: The anti-force pulling member (5-1b) further comprises an anti-force pulling member unlocking portion (5-18b), an anti-force pulling member mounting portion (5-13b), and an anti-force pulling member connecting portion (5-12b) connected in sequence; the anti-force pulling member (5-1b) is rotatably arranged via the anti-force pulling member mounting portion (5-13b); one end of the anti-force pulling member connecting portion (5-12b) is connected to the anti-force pulling member mounting portion (5-13b), and the other end is provided with an anti-force pulling member protrusion (5-11b); The handle (1b) further comprises a first unlocking protrusion (1-8b). When the handle (1b) slides to the handle opening position, the first unlocking protrusion (1-8b) presses against the unlocking portion (5-18b) of the anti-force pulling member, thereby driving the anti-force pulling member (5-1b) to rotate, causing the anti-force pulling member protrusion (5-11b) to move toward the interior of the housing (1a).

12. The circuit breaker according to claim 1, wherein: The housing (1a) further comprises an anti-force pulling member mounting platform (1-12a) arranged on the inner side of the locking side wall (1-21a), and the anti-force pulling member mounting platform (1-12a) is provided with an anti-force pulling member shaft hole (1-120a); the anti-force pulling member (5-1b) further comprises an anti-force pulling member shaft (5-14b), the anti-force pulling member shaft (5-14b) is rotatably inserted into the anti-force pulling member shaft hole (1-120a), and the anti-force pulling member (5-1b) and the anti-force pulling member mounting platform (1-12a) are arranged side by side along the axial direction of the anti-force pulling member shaft (5-14b).