A resilient mechanism for maintaining contact pressure of a dual power switch

Abstract

The utility model relates to a kind of elastic mechanism for keeping double power switching switch contact pressure, including base, contact mechanism, paddle, tension spring and sliding block;Contact mechanism is installed on base, rotating assembly includes rotating shaft, rotor installed on rotating shaft and the movable contact rod set on rotor;Sliding block is slidably arranged on base;The paddle is installed in the outer end of rotating shaft, the paddle is linked with rotating shaft, one end of tension spring is connected with paddle, the other end of tension spring is connected with sliding block;Handle rotates under the action of external force and drives paddle to rotate and drive sliding block to move, and tension spring acts on paddle to make rotating shaft keep the tendency of continuing rotation to contact contact to exert pressure.The above scheme connects paddle with rotating shaft, a tension spring is connected between paddle and sliding block, sliding block is slidably installed on base, after switching state, the side where tension spring is by the tension of tension spring to keep switching state, simultaneously, contact pressure is applied to contact, and the structure is simple, and reliability is high.

Description

Technical Field

[0001] This utility model relates to the field of power switch technology, and in particular to an elastic mechanism for maintaining the contact pressure of a dual power supply switching switch. Background Technology

[0002] After a dual power supply transfer switch completes the switching process, the drive module typically stops working. At this point, an external force is needed to maintain the switching state of the main circuit's contact mechanism, ensuring pressure between the contacts and allowing the product to operate normally. Typical dual power supply transfer products employ a relatively complex mechanism to achieve this switching state, resulting in cumbersome installation and high maintenance costs. Summary of the Invention

[0003] To address the aforementioned problems, the present invention aims to provide an elastic mechanism for maintaining the contact pressure of a dual-power switching switch. The mechanism connects a lever to a rotating shaft, and a tension spring connects the lever and the slider. The slider is slidably mounted on a base. After switching, the side containing the tension spring maintains the switching state through the tension of the spring, while simultaneously applying contact pressure to the contacts. The mechanism is simple in structure, highly reliable, simplifies the installation process, and reduces manufacturing costs.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] An elastic mechanism for maintaining contact pressure of a dual power supply switching switch is characterized by comprising a base, a contact mechanism, a lever, a tension spring, and a slider; the contact mechanism is mounted on the base and includes at least one set of rotating components, load stationary contacts disposed on both sides of the rotating components, and a normal power supply stationary contact and a backup power supply stationary contact respectively disposed above the load stationary contacts on both sides; the rotating components include a rotating shaft, a rotor mounted on the rotating shaft, and a moving contact rod disposed on the rotor, with moving contacts on the upper and lower sides of the moving contact rod, and the moving contact rod swinging with the rotation of the rotating shaft so that one moving contact contacts the load stationary contact, and the other moving contact contacts the normal power supply stationary contact or the backup power supply stationary contact;

[0006] The slider is slidably mounted on the base; the paddle is mounted on the outer end of the rotating shaft and is linked to the rotating shaft; the tension spring is arranged longitudinally, with one end connected to the paddle and the other end connected to the slider; the handle rotates under the action of external force, causing the paddle to rotate and the slider to move, so that the tension spring is on the side biased towards the contact between the moving contact and the stationary contact of the load, and the tension spring acts on the paddle to keep the rotating shaft rotating and apply pressure to the contact.

[0007] Preferably, the paddle includes a connecting part connected to the rotating shaft and a mounting plate formed above the connecting part. The upper end of the mounting plate is folded outward to form a folded plate, and a hook is constructed on the folded plate. One end of the tension spring is hung on the hook.

[0008] Preferably, the connecting part has a square hole, and the rotating shaft is a square shaft that is adapted to be installed in the square hole.

[0009] Preferably, the base is provided with a sliding groove, and baffles are formed on both sides of the upper end of the sliding groove. The slider includes a main body that is adapted to be installed in the sliding groove, a connecting block that extends between the two baffles, and a mounting block that extends out of the outside of the baffles. A step is formed between the connecting block and the main body. A connecting hole is provided on the mounting block, and one end of the tension spring is hooked to the connecting hole.

[0010] Preferably, the mounting plate has L-shaped contact plates symmetrically formed on both sides for touching the detection switch when the contacts are in contact.

[0011] Preferably, the moving contact rod includes a ring sleeved on the outside of the rotor and rocker arms disposed on both sides of the ring. The moving contact is disposed on the upper and lower sides of the outer end of the rocker arms. The rotating assembly also includes an elastic element support seat, which is respectively installed on the rocker arms on both sides. Multiple clamping spaces are formed circumferentially between the elastic element support seat and the rotor. Multiple elastic elements are pre-tightened in the multiple clamping spaces and form a ring-shaped elastic force.

[0012] Preferably, the rotor has fan-shaped blocks formed at its upper and lower ends, and clamping plates are constructed on the upper and lower sides of the elastic element support base. Inclined walls are formed on the clamping plates, which are opposite to the side walls of the fan-shaped blocks. The clamping space is formed between the inclined walls and the side walls of the fan-shaped blocks. Protrusions are provided on the inclined walls, and grooves are provided on the side walls of the fan-shaped blocks. One end of the elastic element abuts in the groove, and the other end is sleeved on the outside of the protrusion and abuts against the inclined wall.

[0013] Preferably, the upper and lower ends of the ring are provided with fan-shaped holes for the fan-shaped blocks to pass through.

[0014] The present invention adopts the above technical solution and has the following beneficial effects:

[0015] ① The elastic mechanism includes a paddle, a tension spring, and a slider. The tension spring is mounted between the paddle and the slider. The paddle is mounted on the rotating shaft and linked together. The slider is slidably mounted on the base. When the paddle rotates with the rotating shaft, the slider slides on the base. The moving contact rod swings with the rotation of the rotating shaft. The tension spring moves to the side where the moving contact contacts the load stationary contact and remains in a vertical position. At the same time, the moving contact diagonally above contacts the power stationary contact. The tension spring acts on the paddle to keep the rotating shaft rotating and apply pressure to the contact. This structure is simple, eliminates a complex set of mechanisms, and reduces costs.

[0016] ② The tension spring has stable elastic force, is less affected by environmental interference, is not prone to failure after long-term use, and has high reliability;

[0017] ③ All components are easy to assemble and disassemble, and easy to maintain. Attached Figure Description

[0018] Figure 1 This is a schematic diagram showing the arrangement of the elastic mechanism in the dual-power switching switch in its initial state.

[0019] Figure 2 for Figure 1 A schematic diagram showing the arrangement of each contact.

[0020] Figure 3 This is a schematic diagram of the three-dimensional structure of the paddle.

[0021] Figure 4 This is a schematic diagram of the three-dimensional structure of the slider.

[0022] Figure 5 This is a schematic diagram of the arrangement of the sliding grooves inside the base.

[0023] Figure 6 This is a schematic diagram showing the arrangement of the elastic mechanism in a dual-power switching switch where the rotating axis rotates to the left.

[0024] Figure 7 for Figure 6 A schematic diagram showing the arrangement of each contact.

[0025] Figure 8 This is a schematic diagram showing the arrangement of the elastic mechanism in a dual-power switching switch where the rotating axis rotates to the right.

[0026] Figure 9 for Figure 8 A schematic diagram showing the arrangement of each contact. Detailed Implementation

[0027] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0028] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more, unless otherwise expressly defined.

[0030] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0031] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0032] like Figures 1-9The elastic mechanism shown includes a base 1, a contact mechanism, a lever 2, a tension spring 3, and a slider 4 for maintaining the contact pressure of a dual power supply switching switch. The contact mechanism is mounted on the base 1 and includes at least one set of rotating components, load stationary contacts 5 disposed on both sides of the rotating components, and a normal power stationary contact 6 and a backup power stationary contact 7 respectively disposed above the load stationary contacts 5 on both sides. The rotating components include a rotating shaft 8, a rotor mounted on the rotating shaft 8, and a moving contact rod 9 disposed on the rotor. Moving contacts 10 are provided on the upper and lower sides of both ends of the moving contact rod 9. The moving contact rod 9 swings with the rotation of the rotating shaft 8 so that one moving contact 10 contacts the load stationary contact 5, and the other moving contact 10 contacts the normal power stationary contact 6 or the backup power stationary contact 7.

[0033] The slider 4 is slidably mounted on the base 1; the paddle 2 is mounted on the outer end of the rotating shaft 8, and the paddle 2 is linked with the rotating shaft 8; the tension spring 3 is arranged longitudinally, with one end of the tension spring 3 connected to the paddle 2 and the other end of the tension spring 3 connected to the slider 4; the handle rotates under the action of external force, causing the paddle 2 to rotate and the slider 4 to move, so that the tension spring 3 is on the side that is biased towards the contact between the moving contact 10 and the load stationary contact 5. The tension spring 3 acts on the paddle 2 to keep the rotating shaft 8 rotating and apply pressure to the contact.

[0034] In the above technical solution, the elastic mechanism includes a lever, a tension spring, and a slider. The tension spring is mounted between the lever and the slider. The lever is mounted on a rotating shaft and linked together. The slider is slidably mounted on a base. When the lever rotates with the rotating shaft, the slider slides on the base. The moving contact rod swings with the rotation of the rotating shaft, and the tension spring moves to the side where the moving contact contacts the load stationary contact. Simultaneously, the moving contact diagonally above contacts the power supply stationary contact. The tension spring acts on the lever to maintain the rotational tendency of the rotating shaft, applying pressure to the contact points and avoiding poor contact or arcing problems caused by pressure attenuation. This structure is simple, replacing traditional complex mechanical linkages or electromagnetic holding mechanisms, significantly simplifying the structure and reducing manufacturing costs. The modular design (base, slider, lever, etc.) facilitates rapid assembly and maintenance, adapts to different specifications of switching equipment, and improves versatility and industrial applicability.

[0035] Furthermore, the paddle 2 includes a connecting portion 11 connected to the rotating shaft 8, and a mounting plate 12 formed above the connecting portion 11. The upper end of the mounting plate 12 is folded outward to form a folded plate 13, and a hook 14 is constructed on the folded plate 13. One end of the tension spring 3 is hung on the hook 14. In this technical solution, the paddle uses a hook structure to connect the tension spring, which simplifies the tension spring installation process, makes installation convenient, and avoids stress concentration caused by traditional welding or bolt fixing, thus extending the service life of the tension spring.

[0036] Furthermore, a square hole 15 is provided on the connecting part 11, and the rotating shaft 8 is a square shaft adapted to be installed in the square hole 15. In this technical solution, the adaptation and installation of the square shaft and the square hole realizes the gapless linkage between the lever and the rotating shaft, which is convenient for installation, prevents slippage or misalignment during rotation, and ensures the accuracy and synchronization of the switching action. The square connection structure enhances the torsional strength, is suitable for high-frequency switching scenarios, and avoids the problem of connection loosening caused by long-term use.

[0037] Furthermore, the base 1 is provided with a sliding groove 17, and baffles 18 are formed on both sides of the upper end of the sliding groove 17. The slider 4 includes a main body 19 adapted to be installed in the sliding groove 17, a connecting block 20 extending between the two baffles 18, and a mounting block 21 extending out of the outside of the baffles 18. A step is formed between the connecting block 20 and the main body 19. A connecting hole 22 is opened on the mounting block 21, and one end of the tension spring 3 is hooked to the connecting hole 22. In this technical solution, the main body slides with the sliding groove, so that the slider can move with the rotation of the lever, ensuring that the tension spring is always stretched in the preset vertical direction, maintaining the stability of the contact pressure. The baffles limit the main body and prevent the slider from falling out of the sliding groove. The connecting hole design of the mounting block is convenient for disassembly and assembly with the tension spring, which facilitates quick replacement of the tension spring and improves maintenance efficiency.

[0038] Furthermore, L-shaped contact plates 23 are symmetrically formed on both sides of the mounting plate 12 for touching the detection switch when the contacts are in contact. In this technical solution, the L-shaped contact plates on the lever are used for intermittent contact with the detection switch to realize the on or off of the detection switch, realize the working status indication of the dual power supply switching switch, and maintain its working reliability.

[0039] Furthermore, the moving contact rod 9 includes a ring sleeved on the outside of the rotor and rocker arms disposed on both sides of the ring. The moving contact 10 is disposed on the upper and lower sides of the outer end of the rocker arms. The rotating assembly also includes an elastic element support seat, which is respectively installed on the rocker arms on both sides. Multiple clamping spaces are formed circumferentially between the elastic element support seat and the rotor. Multiple elastic elements are pre-tightened in the multiple clamping spaces to form a ring-shaped elastic force. In this technical solution, the moving contact rod uses a ring sleeved on the rotor, combined with the rocker arm structure on both sides, to achieve symmetrical swinging of the moving contact, reduce stress concentration on one side, and improve the durability of the mechanism. Multiple pre-tightened elastic elements are disposed between the elastic element support seat and the rotor to form a uniform ring-shaped elastic force, further applying pressure to the contact.

[0040] Furthermore, the rotor has fan-shaped blocks formed at its upper and lower ends, and clamping plates are constructed on the upper and lower sides of the elastic element support base. Inclined walls are formed on the clamping plates opposite to the sidewalls of the fan-shaped blocks, forming the clamping space between the inclined walls and the sidewalls of the fan-shaped blocks. Protrusions are provided on the inclined walls, and grooves are provided on the sidewalls of the fan-shaped blocks. One end of the elastic element abuts against the groove, and the other end is fitted onto the outside of the protrusion and abuts against the inclined wall. In this technical solution, the cooperative design of the fan-shaped blocks and the inclined walls of the clamping plates locks the end of the elastic element through the protrusions and grooves, preventing the elastic element from dislodging or shifting, and improving the stability of the preload.

[0041] Furthermore, the upper and lower ends of the ring are provided with sector-shaped holes for the sector-shaped blocks to pass through. In this technical solution, the sector-shaped holes of the ring allow the rotor sector-shaped blocks to pass through freely, ensuring the synchronous movement of the moving contact rod and the rotor during rotation and avoiding mechanical interference.

[0042] In this specific embodiment, the existing contact between contacts requires a complex mechanism to maintain pressure. The above solution provides an elastic mechanism, which includes a lever, a tension spring, and a slider. The tension spring is mounted between the lever and the slider. The lever is mounted on the rotating shaft and linked together. The slider is slidably mounted on the base. When the lever rotates with the rotating shaft, the slider slides on the base. The moving contact rod swings with the rotation of the rotating shaft. The tension spring moves to the side where the moving contact contacts the load stationary contact and remains vertical. At the same time, the moving contact diagonally above contacts the power stationary contact. The tension spring acts on the lever to keep the rotating shaft rotating and apply pressure to the contact. This structure is simple, eliminates a complex mechanism, and reduces costs.

[0043] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0044] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention without departing from the principles and spirit of the present invention.

Claims

1. An elastic mechanism for maintaining the contact pressure of a dual-power switching switch, characterized in that: The device includes a base (1), a contact mechanism, a lever (2), a tension spring (3), and a slider (4). The contact mechanism is mounted on the base (1). The contact mechanism includes at least one set of rotating components, load stationary contacts (5) disposed on both sides of the rotating components, and a common power stationary contact (6) and a backup power stationary contact (7) respectively disposed above the load stationary contacts (5) on both sides. The rotating components include a rotating shaft (8), a rotor mounted on the rotating shaft (8), and a moving contact rod (9) disposed on the rotor. Moving contacts (10) are provided on the upper and lower sides of both ends of the moving contact rod (9). The moving contact rod (9) swings with the rotation of the rotating shaft (8) so that the moving contact (10) on one side contacts the load stationary contact (5), and the moving contact (10) on the other side contacts the common power stationary contact (6) or the backup power stationary contact (7). The slider (4) is slidably mounted on the base (1); the paddle (2) is mounted on the outer end of the rotating shaft (8), the paddle (2) is linked with the rotating shaft (8), the tension spring (3) is arranged longitudinally, one end of the tension spring (3) is connected to the paddle (2), and the other end of the tension spring (3) is connected to the slider (4); the handle rotates under the action of external force, causing the paddle (2) to rotate and causing the slider (4) to move, so that the tension spring (3) is on the side that is biased towards the contact between the moving contact (10) and the load stationary contact (5), and the tension spring (3) acts on the paddle (2) to make the rotating shaft (8) continue to rotate and apply pressure to the contact.

2. The elastic mechanism for maintaining the contact pressure of a dual-power switching switch according to claim 1, characterized in that: The paddle (2) includes a connecting part (11) connected to the rotating shaft (8) and a mounting plate (12) formed above the connecting part (11). The upper end of the mounting plate (12) is folded outward to form a folding plate (13). A hook (14) is constructed on the folding plate (13). One end of the tension spring (3) is hung on the hook (14).

3. The elastic mechanism for maintaining the contact pressure of a dual power supply switching switch according to claim 2, characterized in that: The connecting part (11) has a square hole (15), and the rotating shaft (8) is a square shaft that is adapted to be installed in the square hole (15).

4. The elastic mechanism for maintaining the contact pressure of a dual power supply switching switch according to claim 2, characterized in that: The base (1) is provided with a sliding groove (17), and baffles (18) are formed on both sides of the upper end of the sliding groove (17). The slider (4) includes a main body (19) adapted to be installed in the sliding groove (17), a connecting block (20) extending between the two baffles (18), and an installation block (21) extending out of the outside of the baffles (18). A step is formed between the connecting block (20) and the main body (19). A connecting hole (22) is provided on the installation block (21), and one end of the tension spring (3) is hooked to the connecting hole (22).

5. The elastic mechanism for maintaining the contact pressure of a dual power supply switching switch according to claim 2, characterized in that: The mounting plate (12) has L-shaped contact plates (23) symmetrically formed on both sides for touching the detection switch when the contact is in contact.

6. The elastic mechanism for maintaining the contact pressure of a dual power supply switching switch according to claim 1, characterized in that: The moving contact rod (9) includes a ring sleeved on the outside of the rotor and rocker arms on both sides of the ring. The moving contact (10) is located on the upper and lower sides of the outer end of the rocker arms. The rotating assembly also includes an elastic element support seat, which is installed on the rocker arms on both sides. Multiple clamping spaces are formed circumferentially between the elastic element support seat and the rotor. Multiple elastic elements are pre-tightened in the multiple clamping spaces and form a ring-shaped elastic force.

7. The elastic mechanism for maintaining the contact pressure of a dual power supply switching switch according to claim 6, characterized in that: The rotor has fan-shaped blocks formed at its upper and lower ends. Clamping plates are constructed on the upper and lower sides of the elastic element support base. Inclined walls are formed on the clamping plates, which are opposite to the side walls of the fan-shaped blocks. The clamping space is formed between the inclined walls and the side walls of the fan-shaped blocks. Protrusions are provided on the inclined walls. Grooves are provided on the two side walls of the fan-shaped blocks. One end of the elastic element abuts in the groove, and the other end is sleeved on the outside of the protrusion and abuts against the inclined wall.

8. The elastic mechanism for maintaining the contact pressure of a dual power supply switching switch according to claim 7, characterized in that: The ring has fan-shaped holes at its upper and lower ends for the fan-shaped blocks to pass through.

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