Double-control safety switch for main loop of magnetic circuit

Abstract

The utility model provides a dual-control safety switch for a main loop of a magnetic circuit. The dual-control safety switch comprises a shell, a static contact and a moving contact, the push rod assembly is used for driving the moving contact and the static contact to be in contact connection or separated disconnection; the magnetic circuit switch comprises a first Hall element and a first magnet which is arranged on the push rod assembly and corresponds to the first Hall element; and the speed regulation assembly comprises a second Hall element and a second magnet which is arranged on the push rod assembly and corresponds to the second Hall element. When the push rod assembly moves, the cutting machine can be controlled to work by driving a moving contact and a static contact of the contact assembly to be in contact connection or separated disconnection, a signal can be output to the controller through cooperation of the first magnet and the first Hall element, and then the cutting machine is controlled to work. Therefore, even if one of the contact assembly and the magnetic circuit switch breaks down, the other can work normally; in addition, the second magnet is matched with the second Hall element, so that the rotating speed of the cutting machine is controlled, and the structure is simple.

Description

Technical Field

[0001] The utility model relates to the technical field of push button switches, in particular to a magnetic circuit main loop dual-control safety switch. Background Art

[0002] The existing push button switch includes a button, a push rod, a moving contact and a stationary contact. The moving contact is swingably installed in the housing. The button drives the push rod to drive the moving contact and the stationary contact to connect or disconnect. However, if a silver point adhesion failure occurs between the moving contact and the stationary contact, the push rod cannot be used to disconnect the switch. This poses a major safety hazard when used in occasions such as cutting machines. Utility Model Content

[0003] To this end, the utility model provides a magnetic circuit main circuit dual-control safety switch, characterized in that it includes a shell, a contact assembly, a push rod assembly, a magnetic circuit switch and a speed regulation assembly, the shell is provided with a contact assembly and a circuit board; the contact assembly includes a static contact and a moving contact swingably mounted on a contact bracket; the push rod assembly is movably mounted on the shell, used to drive the moving contact to contact or disconnect with the static contact; the magnetic circuit switch is used to control the on and off of the switch, the magnetic circuit switch includes a first Hall element provided on the circuit board, and a first magnet provided on the push rod assembly and corresponding to the first Hall element; the speed regulation assembly includes a second Hall element provided on the circuit board, and a second magnet provided on the push rod assembly and corresponding to the second Hall element.

[0004] The push rod assembly includes a push rod and a driving block slidably mounted on the push rod for driving the moving contact to swing. The moving direction of the driving block is arranged perpendicular to the moving direction of the push rod. A first spring is provided between the push rod and the housing, and a second spring is provided between the driving block and the push rod.

[0005] The push rod has two first mounting grooves spaced apart along its moving direction, and the two first mounting grooves are used to mount the first magnet and the second magnet respectively.

[0006] The side surface of the push rod is provided with a hollow mounting column extending toward the moving contact, and the mounting column is formed with a second mounting groove suitable for mounting the second spring and the driving block.

[0007] It also includes a U-shaped card plate, which includes a card plate body that fits and abuts against the contact bracket, and two elastic arms respectively arranged on both sides of the card plate body, and the two elastic arms respectively abut against the two side surfaces of the moving contact.

[0008] The contact bracket includes a conductive plate, and support plates arranged on both sides of the conductive plate and perpendicular to the conductive plate. Bumps are provided on both sides of the width direction of the moving contact. The support plate is formed with a swinging groove for inserting the bump. The bottom of the swinging groove is formed with an inverted V-shaped contact portion, and the inverted V-shaped contact portion is in contact with the bottom surface of the bump.

[0009] The contact support further comprises a wiring board which is connected to the conductive plate in a bending manner and extends out of the housing.

[0010] Both sides of the wiring board are provided with wire pressing arms which can be bent and used for pressing wires.

[0011] The technical solution of this utility model has the following advantages:

[0012] 1. The magnetic circuit main circuit dual-control safety switch provided by the utility model includes a contact assembly, a magnetic circuit switch and a speed control assembly. When the push rod assembly moves, it can control the operation of the cutting machine by driving the moving contact of the contact assembly to connect or separate from the static contact, and can also output a signal to the controller through the cooperation of the first magnet and the first Hall element, thereby controlling the operation of the cutting machine. In this way, even if one of the contact assembly and the magnetic circuit switch fails, the other can still work normally; in addition, the second magnet cooperates with the second Hall element to control the speed of the cutting machine, which has the advantage of simple structure.

[0013] 2. The magnetic circuit main circuit dual-control safety switch provided by the present invention has a U-shaped clamping plate that can increase the contact area between the contact bracket and the moving contact, thereby being able to carry large currents. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0015] Figure 1 This is a schematic diagram of the structure of the magnetic circuit main circuit dual control safety switch of the utility model;

[0016] Figure 2 for Figure 1 Schematic diagram of the structure after removing the circuit board;

[0017] Figure 3 for Figure 1 sectional view of

[0018] Figure 4 is a three-dimensional diagram of a circuit board;

[0019] Figure 5 is a perspective view of a contact assembly;

[0020] Figure 6 It is a three-dimensional diagram of the moving contact, contact bracket and U-shaped clamping plate.

[0021] Explanation of the accompanying drawings: 1. Shell; 2. Circuit board; 3. Static contact; 4. Moving contact; 5. Contact bracket; 6. First Hall element; 7. First magnet; 8. Second Hall element; 9. Second magnet; 10. Push rod; 11. First spring; 12. Second spring; 13. Drive block; 14. First mounting groove; 15. Mounting column; 16. Second mounting groove; 17. U-shaped clamping plate; 18. Clamping plate body; 19. Elastic arm; 20. Bump; 21. Conductive plate; 22. Support plate; 23. Swinging groove; 24. Contact portion; 25. Terminal block; 26. Wire pressing arm. DETAILED DESCRIPTION

[0022] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0023] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0025] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0026] Example

[0027] This embodiment provides a magnetic circuit main circuit dual control safety switch, such as Figure 1 As shown, it includes a housing 1, a contact assembly, a push rod assembly, a magnetic circuit switch and a speed regulating assembly.

[0028] The housing 1 is provided with a contact assembly and a circuit board 2.

[0029] Magnetic circuit switch, connected to the controller, such as Figure 3 and Figure 4 As shown, the magnetic circuit switch includes a first Hall element 6 provided on the circuit board 2 , and a first magnet 7 provided on the push rod assembly and corresponding to the first Hall element 6 .

[0030] Speed ​​control components, such as Figure 3 and Figure 4 As shown, it includes a second Hall element 8 provided on the circuit board 2, and a second magnet 9 provided on the push rod assembly and corresponding to the second Hall element 8. The second magnet 9 cooperates with the second Hall element 8 to output a signal to the controller, thereby controlling the cutting speed of the cutting machine.

[0031] Contact components, such as Figure 2 As shown, it includes a static contact 3 and a moving contact 4 swingably mounted on a contact support 5. Figure 5 and Figure 6 As shown, the contact support 5 includes a conductive plate 21 and support plates 22 arranged on both sides of the conductive plate 21 and perpendicular to it. The movable contact 4 is provided with protrusions 20 on both sides in the width direction. The support plate 22 is formed with a swinging groove 23 for inserting the protrusion 20. The bottom of the swinging groove 23 is formed with an inverted V-shaped contact portion 24. The inverted V-shaped contact portion 24 fits and abuts against the bottom surface of the protrusion 20. The contact support 5 also has a terminal block 25 that is bent and connected to the conductive plate 21 and extends outside the housing 1. The terminal block 25 is provided with wire pressing arms 26 that can be bent and used for wire pressing. It also includes a U-shaped card 17. The U-shaped card 17 includes a card body 18 that fits and abuts against the contact support 5, and two elastic arms 19 arranged on both sides of the card body 18. The two elastic arms 19 respectively abut against the two side surfaces of the movable contact 4.

[0032] The push rod assembly is movably mounted on the housing 1 and is used to drive the moving contact 4 to connect or disconnect with the static contact 3. Figure 2As shown, the push rod assembly includes a push rod 10 and a drive block 13 slidably mounted on the push rod 10 for driving the movable contact 4 to swing. The moving direction of the drive block 13 is perpendicular to the moving direction of the push rod 10. A first spring 11 is provided between the push rod 10 and the housing 1, and a second spring 12 is provided between the drive block 13 and the push rod 10. The push rod 10 has two first mounting grooves 14 spaced apart along its moving direction. The two first mounting grooves 14 are respectively used to mount the first magnet 7 and the second magnet 9. The side of the push rod 10 has a hollow mounting column 15 extending toward the movable contact 4. The mounting column 15 is formed with a second mounting groove 16 suitable for mounting the second spring 12 and the drive block 13.

[0033] The magnetic circuit main circuit dual-control safety switch provided by the utility model includes a contact assembly, a magnetic circuit switch and a speed regulation assembly. When the push rod assembly moves, the operation of the cutting machine can be controlled by driving the movable contact 4 of the contact assembly to be connected or separated from the static contact 3, and the first magnet 7 can cooperate with the first Hall element 6 to output a signal to the controller, thereby controlling the operation of the cutting machine. In this way, even if one of the contact assembly and the magnetic circuit switch fails, the other can still work normally; in addition, the second magnet 9 cooperates with the second Hall element 8 to control the speed of the cutting machine, which has the advantage of simple structure.

[0034] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A magnetic circuit main circuit dual control safety switch, characterized in that: include: A housing (1) is provided with a contact assembly and a circuit board (2); A contact assembly comprises a stationary contact (3) and a moving contact (4) swingably mounted on a contact support (5); A push rod assembly is movably mounted on the housing (1) and is used to drive the moving contact (4) and the static contact (3) to be in contact or disconnected; A magnetic circuit switch is connected to the controller, the magnetic circuit switch comprising a first Hall element (6) provided on the circuit board (2), and a first magnet (7) provided on the push rod assembly and corresponding to the first Hall element (6); The speed regulating component comprises a second Hall element (8) provided on the circuit board (2), and a second magnet (9) provided on the push rod component and arranged corresponding to the second Hall element (8).

2. The magnetic circuit main circuit dual control safety switch according to claim 1, characterized in that: The push rod assembly includes a push rod (10) and a driving block (13) slidably mounted on the push rod (10) for driving the movable contact (4) to swing. The moving direction of the driving block (13) is perpendicular to the moving direction of the push rod (10). A first spring (11) is provided between the push rod (10) and the housing (1), and a second spring (12) is provided between the driving block (13) and the push rod (10).

3. The magnetic circuit main circuit dual control safety switch according to claim 2, characterized in that: The push rod (10) has two first mounting grooves (14) spaced apart along its moving direction, and the two first mounting grooves (14) are used to mount the first magnet (7) and the second magnet (9) respectively.

4. The magnetic circuit main circuit dual control safety switch according to claim 2, characterized in that: The side surface of the push rod (10) has a hollow mounting column (15) extending toward the moving contact (4), and the mounting column (15) is formed with a second mounting groove (16) suitable for mounting the second spring (12) and the drive block (13).

5. The magnetic circuit main circuit dual control safety switch according to claim 1, characterized in that: The invention also includes a U-shaped card plate (17), wherein the U-shaped card plate (17) includes a card plate body (18) that fits and abuts against the contact bracket (5), and two elastic arms (19) arranged on both sides of the card plate body (18), and the two elastic arms (19) respectively abut against the two side surfaces of the moving contact (4).

6. The magnetic circuit main circuit dual control safety switch according to claim 1, characterized in that: The contact support (5) includes a conductive plate (21) and support plates (22) arranged on both sides of the conductive plate (21) and arranged perpendicularly thereto. The movable contact (4) is provided with protrusions (20) on both sides in the width direction. The support plate (22) is formed with a swing groove (23) for inserting the protrusion (20). The bottom of the swing groove (23) is formed with an inverted V-shaped contact portion (24). The inverted V-shaped contact portion (24) is in contact with the bottom surface of the protrusion (20).

7. The magnetic circuit main circuit dual control safety switch according to claim 6, characterized in that: The contact support (5) further comprises a wiring board (25) which is connected to the conductive plate (21) by bending and extending out of the housing (1).

8. The magnetic circuit main circuit dual control safety switch according to claim 7, characterized in that: Both sides of the wiring board (25) are provided with wire pressing arms (26) that can be bent and used for pressing wires.

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