Push rod structure of novel circuit breaker protection switch

Abstract

The utility model provides a novel push rod structure of a circuit breaker protection switch, which is characterized by comprising a shell and a rear cover, wiring terminals are arranged at the upper end and the lower end in the rear cover, a circuit board and a circuit breaker are arranged in the shell, a toggle switch is arranged on the circuit breaker, and a push rod is arranged on the circuit breaker. The outer side of the shell is provided with a shifting piece which can slide up and down and is used for manually controlling the on-off of the circuit breaker, the shifting piece is internally provided with a reset swing piece which can move back and forth and is movably connected with the toggle switch, the tail end of the toggle switch is provided with a clamping groove, and the reset swing piece is correspondingly provided with a clamping strip which is clamped into the clamping groove. A reset spring is arranged between the reset swing piece and the shifting piece, the upper end of the clamping groove is a reset clamping head, the tail end of the reset clamping head is a smooth arc face, and the upper surface of the reset clamping head is a reset inclined face inclining downwards. According to the utility model, potential safety hazards in the process of manually controlling the on-off of the breaker protection switch can be eliminated, and the safety of the protection switch is enhanced.

Description

Technical field

[0001] The utility model relates to the technical field of protection switches, in particular to a novel push rod structure of a circuit breaker protection switch. [Background Technology]

[0002] A circuit breaker is a type of safety technology that provides protection and disconnection, typically consisting of a miniature circuit breaker and a tripping device. Like other circuit breakers, it not only connects and disconnects the main circuit, but also has the ability to detect and determine leakage current. When leakage or insulation failure occurs in the main circuit, the circuit breaker disconnects the main circuit based on the detection result. In addition to the short-circuit and overload protection features of a miniature circuit breaker, a circuit breaker also provides leakage protection. If a person comes into contact with a leaking device, the circuit breaker quickly cuts off power, isolating the person from the device and protecting their safety. These devices are widely used for leakage protection in household wiring and various electrical equipment.

[0003] In the push rod structure of the existing new circuit breaker protection switch, the toggle switch of the internal circuit breaker and the external lever can only move synchronously and cannot be separated from each other; in the absence of external force, the power-off reaction time of the protection switch is usually 0.1 second, which can effectively form leakage protection and avoid causing serious harm to the human body or electrical equipment. However, when manually opening the protection switch, the human hand will continuously apply pushing force to the lever for more than 2 seconds. During this process, the circuit breaker protection switch cannot normally cut off the power, and its short-circuit protection, overload protection and leakage protection functions cannot be realized within the time of pushing the push rod; therefore, in the event of leakage, short circuit, overload, etc., the process of manually pushing the circuit breaker protection switch from the power-off state to the conduction state poses a great safety hazard. [Utility Model Content]

[0004] In order to eliminate the potential safety hazard during the on-off process of a manually controlled circuit breaker protection switch and enhance the safety of the protection switch, the utility model provides a novel push rod structure of a circuit breaker protection switch.

[0005] In order to solve the above problems, the present invention provides the following technical solutions:

[0006] A new push rod structure for a circuit breaker protection switch is characterized in that it includes a shell and a back cover fixedly connected to the shell, wiring terminals are provided at the upper and lower ends inside the back cover, a circuit board and a circuit breaker are provided in the shell, a toggle switch is provided on the circuit breaker, a dial member for manually controlling the on and off of the circuit breaker is provided on the outer side of the shell and can slide up and down, a reset swing member movably connected to the toggle switch is provided in the dial member and can move back and forth, a slot is provided at the end of the toggle switch, a clip that is correspondingly provided on the reset swing member and is inserted into the slot, a reset spring is provided between the reset swing member and the dial member for pushing the reset swing member so that the clip is inserted into the slot, the upper end of the slot is a reset clip, the end of the reset clip is a smooth arc surface, and the upper surface of the reset clip is a downwardly inclined reset slope.

[0007] The push rod structure of the novel circuit breaker protection switch as described above is characterized in that: a slide column extending to both sides is provided on the dial member, a slide groove for clamping the slide column to limit the movement trajectory of the dial member is provided on the side wall of the shell, and a positioning installation opening for pushing the slide column into the slide groove is provided on the side wall of the shell and located at one end of the slide groove.

[0008] The push rod structure of the novel circuit breaker protection switch as described above is characterized in that: slideways are provided on the side walls on both sides of the dial member, clamping heads are provided at both ends of the clamping strip and are slidable in the slideways, and an installation socket for pushing the clamping head into the slideway is provided on the inner wall of the dial member and at one end of the slideway close to the reset swing member.

[0009] The push rod structure of the novel circuit breaker protection switch as described above is characterized in that: a positioning pin extending toward the shifting member is provided on the reset swinging member, a positioning slot for inserting the positioning pin is correspondingly provided in the shifting member, and the reset spring is installed in the positioning slot.

[0010] The push rod structure of the novel circuit breaker protection switch as described above is characterized in that a limiting pressure plate is provided on the reset swinging member and above the reset clamping head.

[0011] The push rod structure of the novel circuit breaker protection switch is characterized in that an angled surface for reducing friction is provided on the outer edge of the clamping strip on the side close to the toggle switch.

[0012] The push rod structure of the novel circuit breaker protection switch as described above is characterized in that: a plurality of circuit breakers are arranged side by side, a plurality of reset swing members and a plurality of shift members are provided correspondingly, and a shift rod connecting member is provided at the end of the shift member for making the plurality of shift members move synchronously.

[0013] The push rod structure of the novel circuit breaker protection switch as described above is characterized in that a fixing piece for facilitating installation and fixing of the protection switch is provided on the rear cover.

[0014] Compared with the prior art, the utility model has the following advantages:

[0015] The push rod structure of the circuit breaker protection switch of the utility model is provided with a reset swinging member. When the circuit system is normal, the dial member drives the reset swinging member to move, which can push the toggle switch to move, thereby realizing manual control of the circuit breaker protection switch on or off; if the user manually opens the protection switch without eliminating and repairing the safety hazards such as leakage, short circuit, overload, etc. in the circuit system, the toggle switch will cause the reset clamp head to pass over the clamping bar under the action of the relay in the circuit breaker, causing the toggle switch to be separated from the reset swinging member, so that the circuit breaker can be normally disconnected even in the process of pushing the dial member. The reset bevel can be used to push the dial and reset the member after the card slot and the card strip are separated from each other. When resetting, the reset bevel can decompose the downward pressure into a lateral thrust, so that the reset swing member moves backward along the slide, so that the card strip passes over the reset clamping head, and then the reset swing member is re-engaged in the card slot under the push of the reset spring, thereby achieving the reset effect.

Brief Description of the Drawings

[0016] Figure 1 is a three-dimensional diagram of the protection switch;

[0017] Figure 2 This is the first exploded view of the protection switch;

[0018] Figure 3 is the second exploded view of the protection switch;

[0019] Figure 4 is the first exploded view of the push rod structure;

[0020] Figure 5 is a second exploded view of the push rod structure;

[0021] Figure 6 is the third exploded view of the putter structure;

[0022] Figure 7 It is an enlarged view of the connection between the reset swing member and the toggle switch;

[0023] In the figure: 1 is the shell; 2 is the back cover; 3 is the terminal block; 4 is the circuit board; 5 is the circuit breaker; 6 is the toggle switch; 7 is the toggle member; 8 is the reset swing member; 9 is the limit pressure plate; 10 is the clamping strip; 11 is the clamping slot; 12 is the reset clamping head; 13 is the reset inclined surface; 14 is the angled inclined surface; 15 is the sliding column; 16 is the sliding slot; 17 is the positioning installation opening; 18 is the slideway; 19 is the clamping head; 20 is the installation opening; 21 is the positioning column; 22 is the positioning slot; 23 is the reset spring; 24 is the toggle rod connecting part; 25 is the fixing part. [Specific implementation method]

[0024] The following is a detailed description of the technical features of the present invention in conjunction with the accompanying drawings so that those skilled in the art can understand. The up and down, front and back directions described in the text are similar to the attached drawings. Figure 1 The orientation shown in is consistent.

[0025] A new push rod structure for circuit breaker protection switch, such as Figures 1 to 7As shown, it includes a housing 1 and a back cover 2 fixedly connected to the housing 1, and wiring terminals 3 are provided at the upper and lower ends inside the back cover 2 for connecting to the live wire or neutral wire of the circuit system. A circuit board 4 and a circuit breaker 5 are provided inside the housing 1, and a toggle switch 6 is provided on the circuit breaker 5. A toggle member 7 for manually controlling the on and off of the circuit breaker 5 is provided on the outside of the housing 1 and can slide up and down. A reset swing member 8 movably connected to the toggle switch 6 is provided in the toggle member 7 and can move forward and backward. A card slot 11 is provided at the end of the toggle switch 6. The movable member 8 is provided with a card strip 10 that is inserted into the card slot 11. A reset spring 23 is provided between the reset swing member 8 and the dial member 7 for pushing the reset swing member 8 to make the card strip 10 inserted into the card slot 11. The upper end of the card slot 11 is a reset clamping head 12. The end of the reset clamping head 12 is a smooth arc surface, which can reduce friction so that the card strip 10 can smoothly pass over the reset clamping head 12 when resetting. The upper surface of the reset clamping head 12 is a downwardly inclined reset inclined surface 13, which can be adjusted between the dial member 7 and the reset swing member. When the reset member 8 is reset, the downward pressure is decomposed into a lateral thrust, so that the reset swing member 8 moves backward along the slide 18, so that the card strip 10 passes over the reset card head 12, and then the reset swing member 8 is re-engaged in the card slot 11 under the push of the reset spring 23 to achieve the reset effect; when the circuit system is normal, the dial member 7 drives the reset swing member 8 to move, which can push the toggle switch 6 to move, thereby realizing manual control of the circuit breaker protection switch on or off; if the user does not eliminate and repair the leakage in the circuit system In the event of safety hazards such as power outage, short circuit, overload, etc., when the protection switch is manually opened, the toggle switch 6 will, under the action of the relay in the circuit breaker 5, cause the reset clamp head 12 to pass over the clamping bar 10, causing the toggle switch 6 to disengage from the reset swing member 8, so that the circuit breaker 5 can normally achieve the power-off effect even in the process of pushing the dial member 7, without affecting the short circuit protection, overload protection and leakage protection functions of the protection switch, effectively eliminating the safety hazards of the manual control of the circuit breaker protection switch on and off process, and enhancing the safety of the protection switch.

[0026] Specifically, the dial member 7 is provided with slide posts 15 extending to both sides respectively, and a slide groove 16 is provided on the side wall of the housing 1 for snapping into the slide posts 15 to limit the moving trajectory of the dial member 7. Since the moving trajectory of the end of the toggle switch 6 is arc-shaped, in order to keep the distance between the toggle switch 6 and the dial member 7 consistent during the movement, the slide groove 16 needs to be set to an arc shape to prevent the card strip 10 from disengaging from the card groove 11 when the dial member 7 is pushed when the circuit is normal. A positioning installation opening 17 for pushing the slide post 15 into the slide groove 16 is provided on the side wall of the housing 1 and at one end of the slide groove 16. The dial member 7 determines the installation orientation through the positioning installation opening 17 and is snapped into and installed on the housing 1, so that the dial member 7 can slide along the slide groove 16.

[0027] In addition, slideways 18 are provided on the side walls on both sides of the dial member 7, and clamping heads 19 are slidably provided at both ends of the clamping strip 10 and located in the slideways 18. An installation bayonet 20 for pushing the clamping head 19 into the slideway 18 is provided on the inner wall of the dial member 7 and located at one end of the slideway 18 close to the reset swing member 8. The reset swing member 8 is clamped and installed in the dial member 7 through the installation bayonet 20, so that the reset swing member 8 can slide along the slideway 18.

[0028] Specifically, a positioning pin 21 extending toward the selector 7 is provided on the reset swing member 8, and a positioning slot 22 for inserting the positioning pin 21 is correspondingly provided in the selector 7. The reset spring 23 is installed in the positioning slot 22, and one end of the reset spring 23 rests on the inner wall of the positioning slot 22, and the other end rests on the end of the positioning pin 21.

[0029] In addition, a limiting pressure plate 9 is provided on the reset swing member 8 and above the reset clamp head 12. After the clamping slot 11 and the clamping strip 10 are disengaged from each other, the reset swing member 8 and the dial member 7 need to be reset. When the clamping strip 10 is re-inserted into the clamping slot 11, the limiting pressure plate 9 abuts against the top surface of the toggle switch 6, and the dial member 7 can no longer drive the reset swing member 8 to continue moving downward, thereby reminding the user that the reset is complete.

[0030] Specifically, a beveled surface 14 for reducing friction is provided on the outer edge of the clamping strip 10 on the side close to the toggle switch 6. In the event of leakage, short circuit, overload, etc., the clamping slot 11 and the clamping strip 10 are disengaged from each other. The beveled surface 14 can reduce the resistance and make the relative movement between the reset clamp head 12 and the reset bevel 13 and the clamping strip 10 smoother.

[0031] Specifically, there are multiple circuit breakers 5 arranged side by side, and there are multiple reset swing members 8 and multiple shift members 7 correspondingly. At the end of the shift member 7, there is a shift rod connecting member 24 for making the multiple shift members 7 move synchronously, so as to manually realize the synchronous control of the multiple circuit breakers 5.

[0032] In addition, a fixing member 25 for conveniently installing and fixing the protection switch is provided on the rear cover 2, making it easy to install and use.

[0033] The embodiments described in the present invention are merely descriptions of preferred implementation methods and are not limited to the precise structures described above and shown in the accompanying drawings. Without departing from the design concept of the present invention, various modifications and improvements made to the technical solutions of the present invention by engineers and technicians in this field should fall within the scope of protection of the present invention.

Claims

1. A new push rod structure for a circuit breaker protection switch, characterized by: The invention comprises a housing (1) and a rear cover (2) fixedly connected to the housing (1); wiring terminals (3) are provided at the upper and lower ends of the interior of the rear cover (2); a circuit board (4) and a circuit breaker (5) are provided in the housing (1); a toggle switch (6) is provided on the circuit breaker (5); a toggle member (7) for manually controlling the on and off of the circuit breaker (5) is provided on the outer side of the housing (1) and can slide up and down; a reset swing member (8) movably connected to the toggle switch (6) is provided in the toggle member (7) and can move forward and backward; A card slot (11) is provided at the end of the movable switch (6); a card strip (10) that is clamped into the card slot (11) is correspondingly provided on the reset swing member (8); a reset spring (23) is provided between the reset swing member (8) and the shift member (7) for pushing the reset swing member (8) so that the card strip (10) is clamped into the card slot (11); the upper end of the card slot (11) is a reset clamping head (12); the end of the reset clamping head (12) is a smooth arc surface; and the upper surface of the reset clamping head (12) is a reset inclined surface (13) that is tilted downward.

2. The push rod structure of the new circuit breaker protection switch according to claim 1 is characterized in that: The shifting member (7) is provided with a slide post (15) extending to both sides respectively, a slide groove (16) for clamping the slide post (15) to limit the moving track of the shifting member (7) is provided on the side wall of the housing (1), and a positioning installation opening (17) for pushing the slide post (15) into the slide groove (16) is provided on the side wall of the housing (1) and at one end of the slide groove (16).

3. The push rod structure of the new circuit breaker protection switch according to claim 1 is characterized in that: Slideways (18) are provided on the side walls on both sides of the shifting member (7), and clamping heads (19) are provided at both ends of the clamping strip (10) and are slidable in the slideways (18). An installation bayonet (20) for pushing the clamping head (19) into the slideway (18) is provided on the inner wall of the shifting member (7) and at one end of the slideway (18) close to the reset swinging member (8).

4. The push rod structure of the new circuit breaker protection switch according to claim 1 is characterized in that: A positioning pin (21) extending toward the shifting member (7) is provided on the reset swinging member (8), a positioning slot (22) for inserting the positioning pin (21) is correspondingly provided in the shifting member (7), and the reset spring (23) is installed in the positioning slot (22).

5. The push rod structure of the new circuit breaker protection switch according to claim 1 is characterized in that: A limiting pressure plate (9) is provided on the reset swinging member (8) and above the reset clamping head (12).

6. The push rod structure of the new circuit breaker protection switch according to claim 1 is characterized in that: An angled surface (14) for reducing friction is provided on the outer edge of the clamping strip (10) on the side close to the toggle switch (6).

7. The push rod structure of the new circuit breaker protection switch according to any one of claims 1 to 6, characterized in that: The circuit breakers (5) are arranged in parallel in a plurality, the reset swinging members (8) and the shifting members (7) are correspondingly arranged in a plurality, and a shifting rod connecting member (24) for synchronously moving the plurality of shifting members (7) is provided at the end of the shifting member (7).

8. The push rod structure of the new circuit breaker protection switch according to any one of claims 1 to 6, characterized in that: A fixing piece (25) for conveniently installing and fixing the protection switch is provided on the rear cover (2).

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