A switch mechanism

Abstract

The present invention provides a switch structure, comprising a first connecting rod, a second connecting rod, a first connecting piece, a second connecting piece, an elastic piece and a trigger device, wherein the first connecting piece is installed in a switch housing, the first end of the first connecting rod is rotatably connected to the first connecting piece, the second end of the first connecting rod is connected to the first end of the second connecting rod through the second connecting piece, and the second connecting piece is movable, the second end of the second connecting rod is located between a first terminal and a second terminal and is in contact with and electrically connected to the first terminal, the first end of the elastic piece is connected to the first hinge or near the first hinge, the second end of the elastic piece is connected to the second connecting rod, the first connecting piece, the second connecting piece and the first terminal are distributed in a triangle, the trigger device pushes the second connecting piece to move, the switch mechanism is electrically connected to the circuit, has sensitive action and reliable contact, and can adapt to different usage needs.

Description

Technical Field

[0001] The present invention relates to the technical field of electrical engineering, electronics, electrical appliances and electrical devices, and in particular to a switch mechanism. Background Art

[0002] Existing switches all use a driving device to drive the first contact piece to connect or separate with the second contact piece to achieve the on-off of the circuit. With the popularity of high-power loads such as LED lighting and motors, the requirements for the on-off ability and impact resistance of switches are getting higher and higher. Existing switches generally have problems such as vibration, jumping, arcing, temperature rise, low contact pressure, and insufficient forced breaking force. In particular, the self-ballasted load has a large starting impact current, which causes arcing, ablation, carbon deposition, and welding, which in turn causes the switch mechanism to fail and shortens the life of the switch. Summary of the invention

[0003] In view of the above-mentioned deficiencies in the prior art, an object of the present invention is to provide a switch mechanism with sensitive action and reliable contact.

[0004] To solve the above technical problems, the switch mechanism provided by the present invention includes a first connecting rod, a second connecting rod, a first connecting piece, a second connecting piece, an elastic piece and a trigger device, the first connecting piece is installed in a switch housing, the first end of the first connecting rod is rotatably connected to the first connecting piece, the second end of the first connecting rod is connected to the first end of the second connecting rod through the second connecting piece, and the second connecting piece is movable, the second end of the second connecting rod is located between the first terminal and the second terminal and is in contact with and electrically connected to the first terminal, the first end of the elastic piece is connected to the first connecting piece or near the first connecting piece, the second end of the elastic piece is connected to the second connecting rod, the first connecting piece, the second connecting piece and the first terminal are distributed in a triangle, the trigger device pushes the second connecting piece to move, and the first connecting rod, the second connecting rod, the first connecting piece or the second connecting piece are provided with contacts connected to the circuit.

[0005] Optionally, the second terminal is a dummy terminal.

[0006] Optionally, the trigger device includes a third connecting member, a third link, a fourth link and a pressing assembly, the third connecting member is connected in the switch housing, the first end of the third link is rotatably connected to the third connecting member, the second end of the third link is connected to the second connecting member, the fourth link is connected to the third link, and the fourth link is against the pressing assembly.

[0007] Optionally, the trigger device includes a toggle assembly, and the first end of the first connecting rod is provided with an extension section, and the extension section is connected to the toggle assembly.

[0008] Optionally, the trigger device includes a fifth connecting rod and a button assembly, one end of the fifth connecting rod is connected to the second connecting member, and the other end of the fifth connecting rod is connected to the button assembly.

[0009] Furthermore, a positioning sleeve is installed on the switch housing, and the fifth connecting rod passes through the positioning sleeve.

[0010] Optionally, the first connecting member is electrically connected to the circuit via a first wire.

[0011] Optionally, the second connecting member is electrically connected to the circuit via a second wire.

[0012] Optionally, the second connecting rod is electrically connected to the circuit through the third wire.

[0013] Furthermore, the second connecting member moves in a direction approaching the elastic member.

[0014] The beneficial effects of the present invention are as follows:

[0015] 1. The switch mechanism of the present invention makes the first connecting member, the second connecting member and the first terminal distributed in a triangle, and the second connecting rod is connected to the first connecting member or near the first connecting member through an elastic member. The mechanism is flipped by the movement of the second connecting member, so that the second connecting rod leaves the first terminal and swings to the second terminal to realize the on-off or switching of the circuit. The present invention adopts the design of the elastic force inflection point, the mechanism can realize instantaneous flipping, sensitive action, avoid arcing caused by slow breaking, and have a good switch feel; when the external force is activated, the first connecting rod and the second connecting rod gradually become a straight line. At this time, the second end of the second connecting rod slides along the contact surface, forming a tangential relative displacement with the contact of the first terminal, which is amplified by the mechanical structure to form a strong tangential forced breaking force, separate the local high-temperature molten pool, separate the fusion welding, and ensure the reliability of the switch mechanism; the second connecting rod is against the first terminal through the elastic member, and the contact contact pressure The structure is large, which is beneficial to improving the conductive performance and stability, and the contact is reliable; due to the triangular structure of the switch and the pulling force of the elastic member, the normal vibration of the contact between the second connecting rod and the first terminal and the second terminal will not be transmitted to the first connecting member and the second connecting member of the moving pair through the second connecting rod to cause vibration in the same direction, and the moving pair will not jump in the same direction to form an arc. Therefore, this mechanism eliminates the jumping of the moving pair and there will be no arcing or welding; therefore, the mechanism can drive the self-ballasted load and can withstand large current impacts; in addition, the positions of the first connecting member, the second connecting member, the first terminal and the lengths of the first connecting rod and the second connecting rod can be designed according to needs to adapt to the requirements of different sizes, breaking capacities, etc. of switches; in addition, the switch mechanism of the present invention can be used for wall switches, appliance switches, micro switches, air switches, leakage protection switches, etc., and can also be modularly designed.

[0016] 2. The present invention also provides three electrical connection methods between the switch mechanism and the circuit. Any component of the switch mechanism can be connected to the circuit through a wire, and the line entry method is flexible.

[0017] 3. The trigger device for pushing the second connecting member to move can be designed according to the needs, which is convenient for the design of the button mechanism and has a flexible driving mode. The external force can also be achieved by manual, electric, magnetic, hydraulic, pneumatic and other devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a main structural schematic diagram of the switch structure of the present invention.

[0019] Figure 2 This is the switch mechanism of embodiment 1.

[0020] Figure 3 This is the switch mechanism of the second embodiment.

[0021] Figure 4 This is the switch mechanism of embodiment 3.

[0022] Among them, 1. the first hinge; 2. the first connecting rod; 3. the second hinge; 4. the second connecting rod; 5. the spring; 6. the first terminal; 7. the second terminal; 8. the circuit terminal; 9. the third hinge; 10. the third connecting rod; 11. the fourth connecting rod; 12. the button; 13. the first wire; 14. the second wire; 15. the third wire; 16. the extension section; 17. the wrench; 18. the fifth connecting rod; 19. the button assembly; 20. the positioning sleeve. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only 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 creative work are within the scope of protection of the present invention.

[0024] Embodiment 1

[0025] See also Figure 1 to Figure 2The switch mechanism of the present invention comprises a first connecting member, a first connecting rod 2, a second connecting member, a second connecting rod 4, an elastic member and a trigger device. The first connecting member of the present embodiment is a first hinge 1, the second connecting member is a second hinge 3, the elastic member is a spring 5, the first hinge 1 is installed in the switch housing, the first end of the first connecting rod 2 is rotatably connected to the first hinge 1, the second end of the first connecting rod 2 is connected to the first end of the second connecting rod 4 through the second hinge 3, and the second hinge 3 is movable, the second end of the second connecting rod 4 is located between the first terminal 6 and the second terminal 7 and is in contact with and electrically connected to the first terminal 6, the first end of the spring 5 is connected to the first hinge 1 or near the first hinge 1, the second end of the spring 5 is connected to the second connecting rod 4, the first hinge 1, the second hinge 3 and the first terminal 6 are distributed in a triangle, the trigger device pushes the second hinge 3 to move, the switch mechanism is electrically connected to the circuit, and the first hinge 1, the second hinge 3, the first connecting rod 2 or the second connecting rod 4 are provided with a contact connected to the circuit. The circuit can be a circuit outside the switch or a circuit inside the switch. The switch mechanism of this embodiment is electrically connected to the circuit terminal 8 through a wire. In addition, the second connecting member moves in a direction close to the elastic member, which ensures that the mechanism is successfully turned over and simplifies the structure.

[0026] The trigger device of this embodiment includes a third connecting member, a third connecting rod 10 and a fourth connecting rod 11. The third connecting member of this embodiment is a third hinge 9, which is connected in the switch housing. The first end of the third connecting rod 10 is rotatably connected to the third hinge 9, the second end of the third connecting rod 10 is connected to the second hinge 3, and the fourth connecting rod 11 is connected to the third connecting rod 10. The fourth connecting rod 11 is against a pressing assembly. The pressing assembly of this embodiment is a plate-shaped button 12. The third connecting rod 10 is rotated around the third hinge 9 by manually pressing the two ends of the button 12.

[0027] In this embodiment, by pressing the button 12, the fourth link 11 is stressed, thereby driving the third link 10 to rotate around the third hinge 9, and then driving the second hinge 3 to move, so that the first link 2 rotates around the first hinge 1. Due to the movement of the second hinge 3 and the tension of the spring 5, the second link 4 passes the inflection point (when the first link 2 and the second link 4 are in a straight line, the tension of the spring 5 is the largest, which is the tension inflection point) and then leaves the first terminal 6 and swings, so that the second end of the second link 4 contacts the second terminal 7, and the mechanism is flipped. When the second terminal 7 is a terminal that can be energized, switching can be achieved, and when the second terminal 7 is a dummy terminal, circuit breaking can be achieved. This embodiment adopts a spring tension inflection point design. When the second hinge 3 moves over the inflection point, the mechanism flips instantly to achieve on-off or switching, eliminating arcing caused by slow breaking, and the switch feels good; when the external force is activated, the first connecting rod 2 and the second connecting rod 4 gradually become a straight line. At this time, the second end of the second connecting rod 4 slides along the contact surface, forming a tangential relative displacement with the contact of the first terminal 6, forming a strong tangential forced breaking force, which is different from the traditional normal forced breaking; in addition, the normal vibration of the contact point between the second connecting rod 4 and the first terminal 6 and the second terminal 7 will not be transmitted to the first hinge 1 and the second hinge 3 of the kinematic pair through the second connecting rod 4 to cause vibration in the same direction, thereby preventing the formation of small gap arcing, ablation, welding, and heating, with large The mechanism will not fail when the current self-ballasts the load; in addition, the displacement of the second hinge 3, the distance between the first terminal 6 and the second terminal 7, the driving force of the second hinge 3, the contact pressure and displacement of the second connecting rod 4 and the terminal contact point (i.e., the forced disconnection displacement of the contact point) can be determined according to the product design input requirements, and then the positions of the first hinge 1, the second hinge 3, the first terminal 6 and the second terminal 7, the length of the first connecting rod 2 and the second connecting rod 4, and the structure of the trigger device are determined, thereby determining the positions and spatial structures of the various components of the mechanism to meet different needs; the switch mechanism of the present invention can be used for wall switches, appliance switches, micro switches, air switches, leakage protection switches, etc., and can also be modularly designed. The switch mechanism of this embodiment is convenient for button design and easy to use.

[0028] The switch structure of the present invention is electrically connected to the circuit. Any component of the switch mechanism can be connected to the circuit through a wire. The wire entry method is flexible. This embodiment lists three ways of electrically connecting to the circuit. Method one is that the first hinge 1 is electrically connected to the circuit terminal 8 through the first wire 13, method two is that the second hinge 3 is electrically connected to the circuit terminal 8 through the second wire 14, and method three is that the second connecting rod 4 is electrically connected through the third wire 15. When the switch mechanism is electrically connected to the circuit in method three, it is the most direct and reliable. When method three is adopted, the first hinge 1, the first connecting rod 2 and the second hinge 3 can be made of non-metallic materials to improve processability and reduce costs. In addition, the external force that drives the second hinge 3 to move can be applied from various angles through different trigger device designs. The external force can also be applied manually, electrically, magnetically, hydraulically, pneumatically, etc., and local manual control, remote control and intelligent system command control can be realized. It is a hardware method and form compatible with electronic appliances, power transmission and distribution, civil control, industrial control, fire protection and automation intelligent systems.

[0029] Embodiment 2

[0030] See also Figure 2 The difference between this embodiment and the first embodiment is that the trigger device includes a toggle assembly, and the toggle assembly of this embodiment is a wrench 17. The first end of the first connecting rod 2 is provided with an extension section 16, and the extension section 16 is connected to the wrench 17. When an external force acts on the wrench 17, the first connecting rod 2 rotates around the first hinge 1, thereby moving the second hinge 3 to achieve the mechanism flipping. The other structures of this embodiment are the same as those of the first embodiment, and the corresponding functions or effects are also the same, which will not be repeated here.

[0031] Embodiment 3

[0032] See also Figure 3 The difference between this embodiment and the embodiment is that the trigger device includes a fifth link 18 and a button assembly 19, one end of the fifth link 18 is connected to the second hinge 3, and the other end of the fifth link 18 is connected to the button assembly 19. Pressing the button assembly 19 pushes the second hinge 3 to move, so as to achieve flipping. The structure is simple and easy to use. A positioning sleeve 20 is also provided in the switch housing, and the fifth link 18 passes through the positioning sleeve 20 to ensure the pushing direction of the fifth link 18. The other structures of this embodiment are the same as those of the embodiment 1, and the corresponding functions or effects are also the same, which will not be repeated here.

[0033] In summary, the present invention has a first connecting member, a second connecting member and a first terminal or a second terminal distributed in a triangle, and the second connecting rod 4 is connected to the first connecting member or near the first connecting member through an elastic member. The trigger device drives the second connecting member to move, so that the first connecting rod 2 rotates around the first connecting member. Because of the movement of the second connecting member and the pulling force of the elastic member, the second connecting rod 4 leaves the first terminal 6 and swings, so that the second end of the second connecting rod 4 contacts the second terminal 7 to realize the mechanism flipping. The present invention adopts a mechanical structure, has sensitive action, reliable contact, and can be designed with position and structure according to different needs. It can adapt to the needs of various switch types and different uses, and can also be modularly designed.

[0034] It should be understood that the present invention uses the terms "first", "second", etc. to describe various information, but these information should not be limited to these terms, and these terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present invention, "first" information may also be referred to as "second" information, and similarly, "second" information may also be referred to as "first" information.

[0035] The above is a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A switch mechanism, characterized in that: The switch comprises a first connecting rod, a second connecting rod, a first connecting piece, a second connecting piece, an elastic piece and a trigger device, wherein the first connecting piece is installed in a switch housing, the first end of the first connecting rod is rotatably connected to the first connecting piece, the second end of the first connecting rod is connected to the first end of the second connecting rod through the second connecting piece, and the second connecting piece is movable, the second end of the second connecting rod is located between the first terminal and the second terminal and is in contact with and electrically connected to the first terminal, the first end of the elastic piece is connected to the first connecting piece or near the first connecting piece, the second end of the elastic piece is connected to the second connecting rod, the first connecting piece, the second connecting piece and the first terminal are distributed in a triangle, the trigger device pushes the second connecting piece to move, and the first connecting rod, the second connecting rod, the first connecting piece or the second connecting piece are provided with a contact connected to a circuit; The trigger device includes a third connecting member, a third link, a fourth link and a pressing assembly, wherein the third connecting member is connected in the switch housing, the first end of the third link is rotatably connected to the third connecting member, the second end of the third link is connected to the second connecting member, the fourth link is connected to the third link, and the fourth link is against the pressing assembly.

2. The switch mechanism according to claim 1, characterized in that: The second terminal is a dummy terminal.

3. The switch mechanism according to claim 1, characterized in that: The trigger device comprises a toggle assembly, and the first end of the first connecting rod is provided with an extension section, and the extension section is connected to the toggle assembly.

4. The switch mechanism according to claim 1, characterized in that: The trigger device includes a fifth connecting rod and a button assembly, one end of the fifth connecting rod is connected to the second connecting member, and the other end of the fifth connecting rod is connected to the button assembly.

5. The switch mechanism according to claim 4, characterized in that: A positioning sleeve is installed on the switch housing, and the fifth connecting rod passes through the positioning sleeve.

6. The switch mechanism according to claim 1, characterized in that: The first connecting member is electrically connected to the circuit via a first wire.

7. The switch mechanism according to claim 1, characterized in that: The second connecting member is electrically connected to the circuit via a second wire.

8. The switch mechanism according to claim 1, characterized in that: The second connecting rod is electrically connected to the circuit through a third wire.

9. The switch mechanism according to claim 1, characterized in that: The second connecting member moves in a direction approaching the elastic member.

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