A bistable switch having a manual closure and an electrically controlled closure

Abstract

This invention discloses a bistable switch with both manual and electrically controlled closing capabilities, comprising a housing and a magnetic latching relay disposed within the housing. The magnetic latching relay includes a base, a frame fixedly connected to the base, a bridge-type double-contact structure mounted within the base, a magnetic latching drive structure mounted on the frame, and a guide rod disposed within the frame. The bridge-type double-contact structure includes a moving contact and a stationary contact. The moving contact is linked to the moving iron core in the magnetic latching drive structure via the guide rod. The invention also includes a guide sleeve, an adapter block, a buffer sleeve, and a rotating column. This invention features a reasonable structural design. When the vehicle controller malfunctions and cannot provide a signal to the bistable switch, the bistable switch cannot close, resulting in a complete lack of power to the vehicle. In this case, the manual closing function can be used by rotating the column to close the moving and stationary contacts, restoring power to the entire vehicle without needing to call for roadside assistance.

Description

Technical Field

[0001] This invention relates to the field of automotive electronics technology, and more specifically, to a bistable switch with both manual and electronic closing capabilities. Background Technology

[0002] Existing technology CN112599388A discloses a bistable switch, including a housing, a coil frame, two terminals, and a contact bridge inside the housing. The coil frame has a hollow sleeve and a coil winding. A stationary iron core and a moving iron core are housed inside the hollow sleeve. A guide rod is fixedly connected between the contact bridge and the moving iron core. A stable component is provided on the coil frame to maintain the moving and stationary iron cores in an engaged or disengaged state. The stable component includes a return spring, a pressure spring for pressing against the contact bridge, and a permanent magnet block for strengthening the electromagnetic attraction of the moving iron core. This invention provides a bistable switch with a simple structure, exhibiting both stable conduction and stable disconnection states. It requires no continuous power supply to the coil, the coil does not heat up, and it ensures a dynamic balance between the internal temperature of the switch and the external ambient temperature. Especially in extremely cold and harsh environments, it can normally switch on and off, solving the problem of cars failing to start normally in extremely cold environments, and effectively improving the switch's service life.

[0003] The above solution has the following drawback: when the vehicle controller malfunctions and cannot provide a signal to the bistable switch, the bistable switch cannot close, the entire vehicle loses power, and a roadside assistance call is required. Summary of the Invention

[0004] This invention overcomes the shortcomings of the prior art and proposes a bistable switch with both manual and electronic closing capabilities. Its structure is reasonably designed. When the vehicle controller malfunctions and cannot provide a signal to the bistable switch, the bistable switch cannot close, and the entire vehicle is de-energized. At this time, the manual closing function can be used by rotating the column to close the moving and stationary contacts, thereby enabling power supply to the entire vehicle without the need to call for rescue.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A bistable switch with manual and electrically controlled closing includes a housing and a magnetic latching relay disposed within the housing. The magnetic latching relay includes a base, a frame fixedly connected to the base, a bridge-type double-contact structure mounted within the base, a magnetic latching drive structure mounted on the frame, and a guide rod disposed within the frame. The bridge-type double-contact structure includes a moving contact and a stationary contact. The moving contact is linked to a moving iron core in the magnetic latching drive structure via the guide rod. The switch is characterized by further comprising:

[0007] The guide sleeve is fixedly installed on the housing.

[0008] An adapter block is slidably disposed within the housing along the axial direction of the guide rod, and the adapter block can slide to abut against the guide rod;

[0009] A buffer sleeve is disposed inside the guide sleeve. A guide block is disposed inside the buffer sleeve. A limiting groove and a guide section communicating with the limiting groove are provided on the guide block.

[0010] A rotating column is rotatably disposed in the guide sleeve and the buffer sleeve. The rotating column is linked to a rotating pin that can move along the guide section and is located in the limiting groove. When the rotating column is rotated, the rotating column moves relative to the buffer sleeve. The rotating column or the buffer sleeve abuts against the guide rod and causes the moving iron core to move, thereby closing the moving contact with the stationary contact.

[0011] By adopting the above technical solution, compared with the existing technology, this solution sets up a rotating column structure. When the vehicle controller malfunctions and cannot provide a signal to the bistable switch, the rotating column is rotated by operation. Specifically, the rotating column has an operating hole exposed at the upper end of the guide sleeve. The operating hole can be an internal hexagonal hole. By inserting a hexagonal wrench into the internal hexagonal hole and rotating the rotating column, the rotating column rotates along the guide block. This causes the rotating column to move relative to the buffer sleeve. The rotating column or buffer sleeve will then abut against the adapter block and drive the rotating block to move downward. The adapter block abuts against the guide rod, thereby realizing the movement of the moving iron core, which in turn closes the moving contact and the stationary contact, achieving the function of manually closing the switch.

[0012] Preferably, the guide block is radially protruding on the inner wall of the buffer sleeve. The guide block has a connecting protrusion and an extension on both sides of the limiting groove. The guide segment communicates with the limiting groove through the connecting protrusion. There are two guide blocks, and the sidewalls of the two guide blocks are arc-shaped surfaces adapted to the rotating column. The rotating column is rotatably disposed between the two arc-shaped surfaces.

[0013] By adopting the above technical solution, two guide blocks are provided, and the guide sections of the two guide blocks form a channel for the rotating pin to pass through. When the rotating pin is located in the limiting groove, it is limited. The connecting protrusion is used to separate the limiting groove and the guide section. The rotating pin can enter and exit the limiting groove through the connecting protrusion, while the extension part acts as a blocking and limiting part for the rotating pin. The arc-shaped surface can reduce rotational friction and guide the rotating column.

[0014] Preferably, the rotating column moves downward along the guide section and abuts against the transition block during rotation.

[0015] By adopting the above technical solution, when the rotating column rotates in the buffer sleeve, the rotating pin moves down along the guide section from top to bottom until it abuts against the adapter block. As the rotating pin continues to move down, before it moves into the limiting groove or just into the limiting groove, it causes the adapter block to abut against the guide rod, and the moving contact and the stationary contact close.

[0016] Preferably, an elastic element is provided between the guide sleeve and the buffer sleeve. When the rotating column rotates, the rotating pin can disengage from the limiting groove and move along the guide section. Under the action of the elastic element, the buffer sleeve moves toward the adapter block and abuts against the adapter block.

[0017] By adopting the above technical solution, the buffer sleeve and the adapter block abut against each other. Initially, the rotating pin is located in the limiting groove. Due to the limiting effect of the rotating pin, the buffer sleeve will not move due to the elastic force of the elastic element. Preferably, the rotating pin rotates within the buffer sleeve but cannot move up or down. As the rotating pin rotates, the rotating pin will disengage from the limiting groove and move upward along the guide section. At this time, under the elastic force of the elastic element, the buffer sleeve will move downward until it abuts against the adapter block, ultimately causing the moving contact and the stationary contact to close. The elastic element can specifically be a spring. This design provides a certain buffering effect when the buffer sleeve acts on the rotating block, avoiding direct, rigid contact between components, extending service life, and making the rotation of the rotating pin more precise and providing a better operating feel.

[0018] Preferably, the buffer sleeve is provided with an abutment block below the guide block, the abutment block can abut against the end face of the adapter block, and a guide structure is provided between the outer wall of the buffer sleeve and the inner wall of the guide sleeve.

[0019] By adopting the above technical solution, the abutting block enables the buffer sleeve and the adapter block to abut against each other, while the guide structure can guide the sliding of the buffer sleeve. Specifically, it is provided with a protruding post on the outer wall of the buffer sleeve and a matching groove on the inner wall of the guide sleeve.

[0020] Preferably, the adapter block includes an abutment block that can abut against the buffer sleeve and an abutment shaft disposed on the abutment block and that can abut against the guide rod. The housing is provided with a receiving groove for accommodating the abutment block. The bottom of the receiving groove is provided with an opening for the abutment shaft to extend into. A guide sliding structure is provided between the side wall of the receiving groove and the abutment block.

[0021] By adopting the above technical solution, the radial dimension of the abutment block is larger than that of the abutment shaft, which makes the contact area on the abutment block larger, facilitating the transmission of force between the buffer sleeve or rotating column and the abutment block. Since the abutment shaft acts on the guide rod, the accuracy of the contact between the abutment shaft and the guide rod can also be guaranteed.

[0022] Preferably, the housing includes an inner shell and an outer shell covering the inner shell, the magnetic latching relay is disposed in the inner shell, the upper end of the inner shell is provided with an insertion part, the receiving groove is provided on the insertion part, the bottom of the guide sleeve is provided with a stepped groove that engages with the insertion part, the guide sleeve is provided with a connecting plate, and the connecting plate is positioned between the outer shell and the inner shell.

[0023] By adopting the above technical solution, the inner shell can be made of plastic, while the outer shell is made of metal. The contact points between the metal outer shell and the plastic inner shell are sealed by a sealing ring, while the non-contact points between the metal outer shell and the plastic inner shell, i.e., the gaps between the two, can be sealed by soft sealing methods such as potting glue, to prevent the metal outer shell from failing due to thermal expansion and contraction after long-term use. Furthermore, the guide sleeve is connected to the inner shell through the insertion part and the stepped groove, and the guide sleeve is fixed by the connecting plate.

[0024] Preferably, a spacer is provided between the insertion part and the stepped groove, and the spacer is provided with an opening, which allows the buffer pad or the rotating column to pass through and abut against the adapter block.

[0025] By adopting the above technical solution, the septum can form a seal between the insertion part and the stepped groove, and the opening on the septum allows the rotating column to pass through and act on the adapter block, and allows the buffer sleeve to pass through the opening and move into the receiving groove and act on the adapter block.

[0026] Preferably, the bridge-type double-contact structure further includes a contact bridge and a terminal block disposed opposite to the contact bridge. The moving contact is disposed on the contact bridge, and the stationary contact is disposed on the terminal block. The contact bridge is fixedly connected to the moving iron core through the guide rod. The magnetic holding drive structure further includes a permanent magnet disposed on the frame, a coil winding disposed on the outer periphery of the frame, a stationary iron core disposed within the frame, a reset spring disposed between the moving iron core and the stationary iron core, and a pressure spring disposed between the stationary iron core and the contact bridge.

[0027] By adopting the above technical solution, a permanent magnet is used to provide magnetic force for the attraction between the moving iron core and the stationary iron core. This transforms the coil winding from a constant magnetic force provider into a starter that provides instantaneous magnetic force, thus avoiding changes in the internal air pressure caused by the coil winding heating up over a long period of time. A reset spring is placed between the moving iron core and the stationary iron core to help the moving iron core reset. The attraction force provided by the permanent magnet is greater than the restoring force provided by the reset spring. As a starter, the coil winding only needs to provide the difference between the two forces to reset the moving iron core. By selecting a certain value of the current, it is ensured that the coil will not heat up.

[0028] Preferably, a circuit board is provided inside the housing, coil pins electrically connected to the circuit board are provided on the frame, connecting pieces electrically connected to the circuit board are provided on the terminals, and a plug electrically connected to the circuit board is provided on the base.

[0029] By adopting the above technical solution, the circuit board is set inside the housing and is sealed and protected by the housing. The circuit board transmits external electrical signals through the plug, while the connecting piece is connected to the terminal block to realize the transmission of electrical signals from the inside of the bistable switch to the outside. Furthermore, the circuit board is connected to the coil winding through the coil pin and provides current signals to it to play the role of the coil winding starter. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of a specific embodiment of the present invention;

[0031] Figure 2 This is a cross-sectional view of a specific embodiment of the present invention;

[0032] Figure 3 This is a schematic diagram illustrating the structure of a magnetic latching relay according to a specific embodiment of the present invention;

[0033] Figure 4 This is a schematic diagram illustrating the structure of the shell according to a specific embodiment of the present invention;

[0034] Figure 5 This is a schematic diagram illustrating the structure of the inner shell in a specific embodiment of the present invention;

[0035] Figure 6 This is a schematic diagram illustrating the structure of the buffer sleeve and the spacer in a specific embodiment of the present invention;

[0036] Figure 7 This is a schematic diagram illustrating the structure of the buffer sleeve and the adapter block according to a specific embodiment of the present invention;

[0037] Figure 8 This is a schematic diagram illustrating the structure of the adapter block in a specific embodiment of the present invention;

[0038] Figure 9 This is a schematic diagram illustrating the structure of the rotating column in a specific embodiment of the present invention;

[0039] Figure 10 This is a schematic diagram illustrating the structure of the rotating pin located in the limiting groove according to a specific embodiment of the present invention;

[0040] Figure 11 This is a schematic diagram illustrating the structure of the buffer sleeve in a specific embodiment of the present invention.

[0041] Figure 12 This is a schematic diagram illustrating the structure of the magnetic holding drive structure according to a specific embodiment of the present invention;

[0042] Figure 13 This is a schematic diagram illustrating the structure of the guide rod in a specific embodiment of the present invention.

[0043] In the diagram: 1. Housing; 11. Receiving slot; 12. Opening; 13. Guide slide structure; 14. Inner shell; 15. Outer shell; 16. Insertion part; 17. Circuit board; 18. Connecting piece; 2. Magnetic latching relay; 21. Base; 22. Frame; 23. Guide rod; 24. Coil pin; 3. Bridge-type double contact structure; 31. Moving contact; 32. Stationary contact; 33. Contact bridge; 34. Terminal block; 4. Magnetic latching drive structure; 41. Moving iron core; 42. Permanent magnet; 43. Coil winding Group; 44. Static iron core; 45. Return spring; 46. Compression spring; 5. Guide sleeve; 51. Elastic element; 52. Step groove; 53. Connecting plate; 54. Spacer; 55. Opening; 6. Adapter block; 61. Abutment block; 62. Abutment shaft; 7. Buffer sleeve; 71. Guide block; 72. Limiting groove; 73. Guide section; 74. Connecting protrusion; 75. Extension; 76. Arc surface; 77. Abutment block; 78. Guide structure; 8. Rotating column; 81. Rotating pin; 9. Plug. Detailed Implementation

[0044] The technical solutions in this embodiment will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0045] It should be noted that in the description of this invention, all directional indications (such as up, down, forward, backward, etc.) are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0046] Furthermore, in this invention, the use of terms such as "first," "second," etc., is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. In the description of this invention, "a number" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0047] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

[0048] like Figure 1-13As shown, a bistable switch with manual and electrically controlled closing includes a housing 1 and a magnetic latching relay 2 disposed in the housing 1. The magnetic latching relay 2 includes a base 21, a frame 22 fixedly connected to the base 21, a bridge-type double-contact structure 3 installed in the base 21, a magnetic latching drive structure 4 installed on the frame 22, and a guide rod 23 disposed in the frame 22. The bridge-type double-contact structure 3 includes a moving contact 31 and a stationary contact 32. The moving contact 31 is linked with the moving iron core 41 in the magnetic latching drive structure 4 through the guide rod 23. The switch is characterized by further including: a guide sleeve 5, fixedly installed on the housing 1; and an adapter block 6, slidably disposed along the axial direction of the guide rod 23. Inside the housing 1, the adapter block 6 can slide to abut against the guide rod 23; a buffer sleeve 7 is disposed inside the guide sleeve 5, and a guide block 71 is disposed inside the buffer sleeve 7. The guide block 71 is provided with a limiting groove 72 and a guide section 73 communicating with the limiting groove 72; a rotating column 8 is rotatably disposed in the guide sleeve 5 and the buffer sleeve 7. The rotating column 8 is linked to a rotating pin 81 that can move along the guide section 73 and is located in the limiting groove 72, so that when the rotating column 8 is rotated, the rotating column 8 moves relative to the buffer sleeve 7, and the rotating column 8 or the buffer sleeve 7 abuts against the guide rod 23, causing the moving iron core 41 to move, thereby realizing the closure of the moving contact 31 and the stationary contact 32.

[0049] By adopting the above technical solution, compared with the prior art, this solution sets up a rotating column 8 structure. When the vehicle controller fails and cannot provide a signal to the bistable switch, the rotating column 8 is rotated by operating it. Specifically, the rotating column 8 has an operating hole exposed at the upper end of the guide sleeve 5. The operating hole can be an internal hexagonal hole. By inserting a hexagonal wrench into the internal hexagonal hole and rotating the rotating column 8, the rotating column 8 rotates along the guide block 71. This causes the rotating column 8 to move relative to the buffer sleeve 7. The rotating column 8 or the buffer sleeve 7 will then abut against the adapter block 6, and drive the rotating block to move downward. The adapter block 6 abuts against the guide rod 23, thereby realizing the movement of the moving iron core 41, which in turn closes the moving contact 31 and the stationary contact 32, achieving the function of manually closing the switch.

[0050] The guide block 71 is radially protruding from the inner wall of the buffer sleeve 7. A connecting protrusion 74 and an extension 75 are located on either side of the limiting groove 72 on the guide block 71. The guide segment 73 communicates with the limiting groove 72 through the connecting protrusion 74. Two guide blocks 71 are provided, each with a sidewall that is an arc-shaped surface 76 adapted to the rotating column 8. The rotating column 8 is rotatably positioned between the two arc-shaped surfaces 76. The two guide blocks 71 form a channel between their guide segments 73 for the rotating pin 81 to pass through. When the rotating pin 81 is in the limiting groove 72, it is limited. The connecting protrusion 74 separates the limiting groove 72 and the guide segment 73, allowing the rotating pin 81 to enter and exit the limiting groove 72 via the connecting protrusion 74. The extension 75 serves to block and limit the rotation of the rotating pin 81. The arc-shaped surface 76 reduces rotational friction and provides guidance for the rotating column 8.

[0051] In one specific embodiment, the rotating column 8 moves downward along the guide section 73 and abuts against the adapter block 6 during rotation. In this design, as the rotating column 8 rotates within the buffer sleeve 7, the rotating pin 81 moves downward along the guide section 73 until it abuts against the adapter block 6. As the rotating pin 81 continues to move downward, before it reaches the limiting groove 72 or just reaches it, the adapter block 6 abuts against the guide rod 23, and the moving contact 31 and the stationary contact 32 close.

[0052] In another specific embodiment, an elastic element 51 is provided between the guide sleeve 5 and the buffer sleeve 7. When the rotating column 8 rotates, the rotating pin 81 can disengage from the limiting groove 72 and move along the guide section 73. Under the action of the elastic element 51, the buffer sleeve 7 moves towards the adapter block 6 and abuts against the adapter block 6. This scheme is one in which the buffer sleeve 7 abuts against the adapter block 6. In the initial state, the rotating pin 81 is located in the limiting groove 72. Due to the limiting effect of the rotating pin 81, the buffer sleeve 7 will not move due to the elastic force of the elastic element 51. Preferably, the rotating column 8 rotates within the buffer sleeve 7 and cannot move up and down. As the rotating column 8 rotates, the rotating pin 81 will disengage from the limiting groove 72 and move upward along the guide section 73. At this time, under the elastic force of the elastic element 51, the buffer sleeve 7 will move downward until it abuts against the adapter block 6, and finally cause the moving contact and the stationary contact to close. The elastic element 51 can be a spring. This design allows the buffer sleeve 7 to have a certain buffering effect when it acts on the rotating block, avoiding hard direct contact between the parts, extending the service life, and making the rotation of the rotating column 8 more precise and providing a better operating feel.

[0053] Furthermore, an abutment block 77 is provided below the guide block 71 in the buffer sleeve 7. The abutment block 77 can abut against the end face of the adapter block 6. A guide structure 78 is provided between the outer wall of the buffer sleeve 7 and the inner wall of the guide sleeve 5. The abutment block 77 enables the buffer sleeve 7 to abut against the adapter block 6, while the guide structure 78 guides the sliding of the buffer sleeve 7. Specifically, it is provided with a protruding post on the outer wall of the buffer sleeve 7 and a matching groove on the inner wall of the guide sleeve 5.

[0054] Furthermore, the adapter block 6 includes an abutment block 61 that can abut against the buffer sleeve 7 and an abutment shaft 62 disposed on the abutment block 61 and that can abut against the guide rod 23. The housing 1 is provided with a receiving groove 11 for accommodating the abutment block 61. The bottom of the receiving groove 11 is provided with an opening 12 for the abutment shaft 62 to extend into. A guide sliding structure 13 is provided on the side wall of the receiving groove 11 and between it and the abutment block 61. The radial dimension of the abutment block 61 is larger than that of the abutment shaft 62, which makes the contact area acting on the abutment block 61 larger, facilitating the transmission of force between the buffer sleeve 7 or the rotating column 8 and the abutment block 61. Since the abutment shaft 62 acts on the guide rod 23, the accuracy of the contact between the abutment shaft 62 and the guide rod 23 can also be ensured.

[0055] Additionally, the housing 1 includes an inner shell 14 and an outer shell 15 covering the inner shell 14. The magnetic latching relay 2 is disposed in the inner shell 14. An insertion part 16 is provided at the upper end of the inner shell 14. A receiving groove 11 is provided on the insertion part 16. A stepped groove 52 is provided at the bottom of the guide sleeve 5 to engage with the insertion part 16. A connecting plate 53 is provided on the guide sleeve 5. The connecting plate 53 is positioned between the outer shell 15 and the inner shell 14. The inner shell 14 can be made of plastic, while the outer shell 15 is made of metal. The contact points between the metal outer shell 15 and the plastic inner shell 14 are sealed by a sealing ring, while the non-contact points between the metal outer shell 15 and the plastic inner shell 14, i.e. the gaps between the two, can be sealed by soft sealing methods such as potting glue, to prevent the metal outer shell 15 from failing due to thermal expansion and contraction after long-term use. Furthermore, the guide sleeve 5 is connected to the inner shell 14 by the insertion part 16 and the stepped groove 52, and the guide sleeve 5 is fixed by the connecting plate 53.

[0056] Furthermore, the bridge-type double-contact structure 3 also includes a contact bridge 33 and a terminal block 34 opposite to the contact bridge 33. The moving contact 31 is disposed on the contact bridge 33, and the stationary contact 32 is disposed on the terminal block 34. The contact bridge 33 is fixedly connected to the moving iron core 41 through the guide rod 23. The magnetic holding drive structure 4 also includes a permanent magnet 42 disposed on the frame 22, a coil winding 43 disposed on the outer periphery of the frame 22, a stationary iron core 44 disposed in the frame 22, a reset spring 45 disposed between the moving iron core 41 and the stationary iron core 44, and a pressure spring 46 disposed between the stationary iron core 44 and the contact bridge 33. By setting a permanent magnet 42, magnetic force is provided for the attraction between the moving iron core 41 and the stationary iron core 44, thereby changing the coil winding 43 from a constant magnetic force provider to a starter that provides instantaneous magnetic force. This avoids changes in the internal air pressure of the housing 1 caused by the coil winding 43 heating up after being energized for a long time. A reset spring 45 is placed between the moving iron core 41 and the stationary iron core 44 to help the moving iron core 41 reset. The attraction force provided by the permanent magnet is greater than the restoring force provided by the reset spring 45. The coil winding 43, as a starter, only needs to provide the difference between the two to reset the moving iron core 41. By selecting a certain value of the energizing current, it is ensured that the coil will not heat up.

[0057] The housing 1 contains a circuit board 17. The frame 22 has coil pins 24 electrically connected to the circuit board 17. The terminal block 34 has a connecting piece 18 electrically connected to the circuit board 17. The base 21 has a plug 9 electrically connected to the circuit board 17. The circuit board 17 is housed inside the housing 1 and is sealed and protected by the housing 1. The circuit board 17 transmits external electrical signals through the plug 9. The connecting piece 18 connects to the terminal block 34, enabling the transmission of electrical signals from the inside of the bistable switch to the outside. Furthermore, the circuit board 17 connects to the coil winding 43 through the coil pins 24 and provides current signals to it, thus functioning as a starter for the coil winding 43.

[0058] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A bistable switch with manual and electronic closing capabilities, comprising a housing (1) and a magnetic latching relay (2) disposed within the housing (1), the magnetic latching relay (2) comprising a base (21), a frame (22) fixedly connected to the base (21), a bridge-type double-contact structure (3) mounted within the base (21), a magnetic latching drive structure (4) mounted on the frame (22), and a guide rod (23) disposed within the frame (22), the bridge-type double-contact structure (3) comprising a moving contact (31) and a stationary contact (32), the moving contact (31) being linked with a moving iron core (41) in the magnetic latching drive structure (4) via the guide rod (23), characterized in that, Also includes: Guide sleeve (5) is fixedly installed on the housing (1); The adapter block (6) is slidably disposed in the housing (1) along the axial direction of the guide rod (23), and the adapter block (6) can slide to abut against the guide rod (23); A buffer sleeve (7) is disposed inside the guide sleeve (5). A guide block (71) is disposed inside the buffer sleeve (7). A limiting groove (72) and a guide section (73) communicating with the limiting groove (72) are provided on the guide block (71). A rotating column (8) is rotatably disposed in the guide sleeve (5) and the buffer sleeve (7). The rotating column (8) is linked to a rotating pin (81) that can move along the guide section (73) and is located in the limiting groove (72). When the rotating column (8) is rotated, the rotating column (8) moves relative to the buffer sleeve (7). The rotating column (8) or the buffer sleeve (7) abuts against the guide rod (23) and causes the moving iron core (41) to move, thereby realizing the closure of the moving contact (31) and the stationary contact (32). The guide block (71) is radially protruding on the inner wall of the buffer sleeve (7). The guide block (71) has a connecting protrusion (74) and an extension (75) on both sides of the limiting groove (72). The guide section (73) communicates with the limiting groove (72) through the connecting protrusion (74). There are two guide blocks (71). The side walls of the two guide blocks (71) are arc-shaped surfaces (76) that are adapted to the rotating column (8). The rotating column (8) is rotatably disposed between the two arc-shaped surfaces (76). The bridge-type double contact structure (3) further includes a contact bridge (33) and a terminal block (34) opposite to the contact bridge (33). The moving contact (31) is disposed on the contact bridge (33), and the stationary contact (32) is disposed on the terminal block (34). The contact bridge (33) is fixedly connected to the moving iron core (41) through the guide rod (23). The magnetic holding drive structure (4) further includes a permanent magnet (42) disposed on the frame (22), a coil winding (43) disposed on the outer periphery of the frame (22), a stationary iron core (44) disposed in the frame (22), a reset spring (45) disposed between the moving iron core (41) and the stationary iron core (44), and a pressure spring (46) disposed between the stationary iron core (44) and the contact bridge (33).

2. A bistable switch with manual closing and electrically controlled closing as described in claim 1, characterized in that, The rotating column (8) moves down along the guide section (73) and abuts against the transition block (6) when it rotates.

3. A bistable switch with manual closing and electrically controlled closing as described in claim 1, characterized in that, An elastic element (51) is provided between the guide sleeve (5) and the buffer sleeve (7). When the rotating column (8) rotates, the rotating pin (81) can disengage from the limiting groove (72) and move along the guide section (73). Under the action of the elastic element (51), the buffer sleeve (7) moves toward the adapter block (6) and abuts against the adapter block (6).

4. A bistable switch with manual closing and electrically controlled closing as described in claim 3, characterized in that, The buffer sleeve (7) is provided with an abutment block (77) located below the guide block (71). The abutment block (77) can abut against the end face of the adapter block (6). A guide structure (78) is provided between the outer wall of the buffer sleeve (7) and the inner wall of the guide sleeve (5).

5. A bistable switch with manual closing and electrically controlled closing as described in claim 2 or 3, characterized in that, The adapter block (6) includes an abutment block (61) that can abut against the buffer sleeve (7) and an abutment shaft (62) disposed on the abutment block (61) and that can abut against the guide rod (23). The housing (1) is provided with a receiving groove (11) for accommodating the abutment block (61). The bottom of the receiving groove (11) is provided with an opening (12) for the abutment shaft (62) to extend into. A guide sliding structure (13) is provided between the side wall of the receiving groove (11) and the abutment block (61).

6. A bistable switch with manual closing and electrically controlled closing as described in claim 5, characterized in that, The housing (1) includes an inner shell (14) and an outer shell (15) covering the inner shell (14). The magnetic latching relay (2) is disposed in the inner shell (14). An insertion part (16) is provided at the upper end of the inner shell (14). The receiving groove (11) is provided on the insertion part (16). The bottom of the guide sleeve (5) is provided with a stepped groove (52) that engages with the insertion part (16). A connecting plate (53) is provided on the guide sleeve (5). The connecting plate (53) is positioned between the outer shell (15) and the inner shell (14).

7. A bistable switch with manual closing and electrically controlled closing as described in claim 6, characterized in that, A spacer (54) is provided between the insertion part (16) and the stepped groove (52). An opening (55) is provided on the spacer (54), which allows the buffer pad or the rotating column (8) to pass through and abut against the adapter block (6).

8. A bistable switch with manual closing and electrically controlled closing as described in claim 1, characterized in that, The housing (1) is provided with a circuit board (17), the frame (22) is provided with coil pins (24) that are electrically connected to the circuit board (17), the terminal block (34) is provided with a connecting piece (18) that is electrically connected to the circuit board (17), and the base (21) is provided with a plug (9) that is electrically connected to the circuit board (17).

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