A circuit switching structure

Abstract

This invention discloses a circuit switching structure, comprising: a hot-melt component; a transmission assembly, wherein the transmission assembly is provided with a circuit switching part, and after the hot-melt component melts, the transmission assembly moves at least partially to control the circuit switching part to move from a first position to a second position; and a circuit switching conductor, wherein the first end of the circuit switching conductor is electrically connected to a first circuit on a first circuit board, and the second end of the circuit switching conductor is provided with a contact conductive part and is separable from the second circuit on the first circuit board. This invention has a simple structure and achieves circuit switching through a mechanical linkage method. Compared with electronic circuit switching circuits, it has stronger stability and is suitable for applications where equipment needs to continue operating even after being struck by lightning or accidentally short-circuited and melted.

Description

Technical Field

[0001] This invention belongs to the field of protector technology, specifically relating to a circuit switching structure. Background Technology

[0002] Most surge protectors on the market lack the function of automatically switching circuits after a fuse blows; a fuse blows and the equipment shuts down. Therefore, it is crucial to develop a circuit switching structure that automatically switches the circuit after a fuse blows when the internal resistor of the surge protector is triggered by external factors, thus preventing equipment shutdown. Summary of the Invention To solve at least one of the above-mentioned technical problems, the present invention provides a circuit switching structure, comprising: Hot melt parts; A transmission assembly is provided with a circuit switching part. After the hot melt part is melted, the transmission assembly moves at least partially to control the circuit switching part to move from a first position to a second position. A circuit conversion conductor, wherein the first end of the circuit conversion conductor is electrically connected to the first circuit of the first circuit board, and the second end of the circuit conversion conductor is provided with a contact conductive part and is detachably disposed from the second circuit of the first circuit board; When the circuit switching part is in the first position, the contact conductive part is separated from the second circuit; When the circuit switching part is in the second position, the contact conductive part makes contact with the second circuit and conducts electricity.

[0003] The transmission assembly includes a first transmission member and a second transmission member. The first transmission member has a first limiting surface to restrict the movement of the second transmission member in a second direction. After the hot melt component melts, the first transmission member moves in a first direction to release the restriction on the second transmission member, allowing the second transmission member to move in the first direction, thereby causing the control circuit switching unit to move from a first position to a second position. The transmission assembly includes a circuit switching push block, and the circuit switching unit is disposed on the circuit switching push block. The second transmission member has a contact surface that cooperates with the circuit switching push block. The first direction is a horizontal direction, or at least has a horizontal component; the second direction is a vertical direction, or at least has a vertical component.

[0004] The circuit conversion push block is detachably disposed from the second transmission component; it also includes a spring, which releases the restriction on the spring after the hot melt component melts, and the spring pushes the first transmission component in a first direction; it also includes a torsion spring, the circuit conversion push block is provided with a push groove, and one end of the torsion spring is disposed in the push groove; the circuit conversion push block is provided with a guide wedge block, and the circuit conversion conductor is provided with a first inclined surface that cooperates with the guide wedge block.

[0005] Through the above technical solution, the hot melt component of the present invention can be a hot melt resistor. When it melts, the spring is not subjected to the pressure of the hot melt resistor. That is, under its own elastic force, it controls the push block to move in the first direction. Then, the first limiting surface of the first transmission component disengages from the second transmission component. Since a torsion spring is provided on the circuit conversion push block, the second transmission component will be pushed upward by the circuit conversion push block and move in the first direction. Then, the contact conductive part of the circuit conversion conductor will contact the circuit on the first circuit board, and the original disconnected state becomes a connected state, realizing the switching of the circuit.

[0006] The first transmission component has an expansion arm at the end of the middle connecting arm, a second inclined surface on the expansion arm, and a third inclined surface on the push block connected to the spring that cooperates with the second inclined surface.

[0007] It also includes a base and a replacement part detachably connected to the base. The hot melt component, the first transmission component, the second transmission component, and the spring of the transmission assembly are disposed on the replacement part. The first circuit board and the circuit conversion push block of the transmission assembly are disposed on the base.

[0008] Through the above technical solution, the replacement part of the present invention can be replaced with a new replacement part and connected to the base after the hot melt part has been used.

[0009] The outer wall of the replacement part is provided with an elastic arm, the elastic arm is provided with a hook, and the base is provided with a slot for inserting the replacement part, and the inner wall of the slot is provided with a groove that cooperates with the hook.

[0010] The replacement component has a second circuit board installed inside, and a conductive component is fixed on the second circuit board. The replacement component has a second through hole for the conductive component to pass through. A conductive clip is soldered onto the first circuit board. When the replacement component is inserted into the slot, the conductive component is inserted into the conductive clip to make the first circuit board and the second circuit board electrically connected.

[0011] A grounding conductor is fixed inside the substrate. One end of the grounding conductor is electrically connected to a first circuit board. A third through hole is provided on the substrate for the clamp of the grounding conductor to extend out. The substrate also includes a mounting rail. The first end of the mounting rail is inserted into the clamp to fix it. A mounting groove is provided on the substrate. The second end of the mounting rail is inserted into the mounting groove. A slot is provided on one side of the mounting groove. A hollow is provided on the substrate. A gap is provided between the hollow and the slot to increase the stress of the mounting groove.

[0012] A plurality of wiring assemblies are provided on the substrate. Each wiring assembly includes a wiring cavity and a wiring hole on the substrate that communicates with the wiring cavity. A wiring conductor is electrically connected to a first circuit board. The wiring conductor extends into the wiring cavity. A spring is installed in the wiring cavity. The first end of the spring abuts against the wiring conductor, and the second end forms a clamping position with the wiring conductor. A connecting wire is inserted from the wiring hole into the clamping position. It also includes a button disposed on the base, the button abutting against the second end of the spring to open the wire clamping position to facilitate the removal of the connecting wire.

[0013] This invention has a simple structure. It achieves circuit switching through a mechanical linkage method, which is more stable than electronic circuit switching circuits. It is suitable for occasions where the equipment needs to continue operating after being struck by lightning or accidentally short-circuited and blown. Attached Figure Description

[0014] Figure 1 This is a perspective view of the present invention; Figure 2 This is a schematic diagram of the longitudinal section of the present invention; Figure 3 This is a perspective view of the hidden portion of the substrate, replacement parts, and first circuit board in the front direction of the present invention; Figure 4 This is a split perspective view of the present invention; Figure 5 This is a perspective view of the hidden portion of the substrate, replacement parts, and second circuit board on the rear side of the present invention. Figure 6 A 3D view of the back of the circuit conversion push block; Figure 7 This is a schematic diagram of the cross-section of the circuit conversion pusher and the circuit conversion conductor. Figure 8 This is a perspective view of the front direction transmission component of the present invention; Figure 9 This is a perspective view of the mating structure between the circuit conversion conductor contact conductive part and the first circuit board of the present invention; Figure 10 The front printed circuit of the first and second circuit boards; Figure 11 The back of the first and second circuit boards are printed circuits.

[0015] Figure label: 1. Transmission assembly; 101. Circuit conversion section; 102. First transmission component; 1021. Middle connecting arm; 1022. Expansion arm; 1023. Second inclined surface; 1024. Guide groove; 103. Second transmission component; 1031. Contact surface; 104. Circuit conversion push block; 1041. Push groove; 1042. Guide wedge block; 105. Spring; 106. Torsion spring; 107. Push block; 1071. Third inclined surface; 2. Hot melt parts; 3. Circuit switching conductor; 301. First inclined plane; 401 Base; 402 First Circuit Board; 403 Slot; 404 Hook; 405 Conductive Clip; 406 Grounding Conductor; 407 Mounting Slot; 408 Slotting; 409 Cutout; 410 Wiring Cavity; 411 Wiring Hole; 412 Spring; 413 Clamping Position; 414 Button; 501 Replacement part; 502 Second circuit board; 503 Elastic arm; 504 Hook; 505 Limiting groove; 506 Guide bar; 507 First guide groove; 508 Anti-detachment protrusion; 509 Conductive component; 510 Wiring conductor; 511 Second guide groove. 6. Install the guide rail. Detailed Implementation

[0016] To enable those skilled in the art to better understand the present invention and to more clearly define the scope of protection claimed by the present invention, the present invention will be described in detail below with reference to certain specific embodiments. It should be noted that the following are merely some specific embodiments of the inventive concept, and the specific and direct descriptions of related structures are only for the purpose of facilitating understanding of the present invention; the specific features do not necessarily or directly limit the scope of the present invention.

[0017] Referring to the accompanying drawings, the present invention adopts the following technical solution: a circuit switching structure, comprising: Hot melt component 2; The transmission assembly 1 is provided with a circuit conversion part 101. After the hot melt part 2 is melted, the transmission assembly 1 moves at least partially to control the circuit conversion part 101 to move from a first position to a second position. The circuit conversion conductor 3 has its first end electrically connected to the first circuit of the first circuit board 402, and its second end is provided with a contact conductive part and can be separated from the second circuit of the first circuit board 402. In this embodiment, when the circuit switching unit 101 is in the first position, the contact conductive part is separated from the second circuit; in other embodiments, by changing the structure of the transmission assembly, it is possible to achieve that when the circuit switching unit 101 is in the first position, the contact conductive part is in contact with the second circuit, and when the circuit switching unit 101 is in the second position, the contact conductive part is separated from the second circuit.

[0018] When the circuit switching unit 101 is in the second position, the contact conductive part makes contact with the second circuit and conducts electricity.

[0019] The transmission assembly 1 includes a first transmission member 102 and a second transmission member 103. The first transmission member 102 has a first limiting surface to restrict the movement of the second transmission member 103 in a second direction. After the hot melt component 2 melts, the first transmission member 102 moves in a first direction to release the restriction on the second transmission member 103, allowing the second transmission member 103 to move in the first direction, thereby causing the control circuit conversion unit 101 to move from a first position to a second position. The transmission assembly 1 includes a circuit conversion push block 104, and the circuit conversion unit 101 is disposed on the circuit conversion push block 104. The second transmission member 103 has a contact surface 1031 that cooperates with the circuit conversion push block 104. The first direction is a horizontal direction, or at least has a horizontal component; the second direction is a vertical direction, or at least has a vertical component.

[0020] The circuit conversion push block 104 is detachably disposed from the second transmission member 103; it also includes a spring 105, which releases the restriction on the spring 105 after the hot melt 2 melts, and the spring 105 pushes the first transmission member 102 in a first direction; it also includes a torsion spring 106, the circuit conversion push block 104 is provided with a push groove 1041, and one end of the torsion spring 106 is disposed in the push groove 1041; the circuit conversion push block 104 is provided with a guide wedge block 1042, and the circuit conversion conductor 3 is provided with a first inclined surface 301 that cooperates with the guide wedge block 1042.

[0021] Through the above technical solution, the hot melt component 2 of the present invention can be a hot melt resistor. When it melts, the spring 105 is not subjected to the pressure of the hot melt resistor, that is, under its own elastic force, it controls the push block 107 to move in the first direction, such as... Figure 3 In the middle, when the push block 17 moves to the right, the first limiting surface of the first transmission member 102 disengages from the second transmission member 103. Since a torsion spring 106 is provided on the circuit conversion push block 104, the second transmission member 103 will be pushed upward by the circuit conversion push block 104 and move in the first direction, for example... Figure 3 When the circuit moves upward, the contact conductive part of the circuit switching conductor 3 will contact the circuit on the first circuit board 402, changing the original disconnected state to a connected state, thus realizing the circuit switching.

[0022] The first transmission component 102 has an expansion arm 1022 at the end of its middle connecting arm 1021. A second inclined surface 1023 is formed on the expansion arm 1022, and a third inclined surface 1071, which mates with the second inclined surface 1023, is provided on the push block 107 connected to the spring 105. This inclined surface mating prevents interference, and the resulting Y-shaped structure allows for triggering operation even when a single hot melt component 2 melts.

[0023] It also includes a base 401 and a replacement part 501 detachably connected to the base 401. The hot melt part 2, the first transmission part 102, the second transmission part 103, and the spring 105 of the transmission assembly 1 are disposed on the replacement part 501. The first circuit board 402 and the circuit conversion push block 104 of the transmission assembly 1 are disposed on the base 401.

[0024] Through the above technical solution, the replacement part 501 of the present invention can be replaced with a new replacement part 501 after the hot melt part 2 is used and connected to the base 401.

[0025] The outer wall of the replacement part 501 is provided with an elastic arm 503, the elastic arm 503 is provided with a hook 504, the base 401 is provided with a slot 403 for the replacement part 501 to be inserted, and the inner wall of the slot 403 is provided with a groove 404 that cooperates with the hook 504.

[0026] Replacement component 501 has a fixed limiting groove 505 and a guide strip 506. The first end of spring 105 abuts against the limiting groove 505, and the second end is fixed to a pushing block 107. The pushing block 107 abuts against the heat-fused component. The outer wall of the first transmission component 102 has a guide groove 1024 that mates with the guide strip 506. Replacement component 501 has a fixed first guide groove 507. The second transmission component 103 is disposed in the first guide groove 507. The bottom of the base 401 has a first through hole for the second transmission component 103 to pass through. The inner wall of the first guide groove 507 has an anti-detachment protrusion 508 to restrict the detachment of the second transmission component 103, but does not affect the movement of the second transmission component 103. The first transmission component 102 has several connecting arms. The lower connecting arm has a second guide groove. The end of the second transmission component 103 moves in the second guide groove. The heat-fused component is disposed between two adjacent connecting arms or outside the outer connecting arm.

[0027] The replacement component 501 is equipped with a second circuit board 502, and a conductive component 509 is fixed on the second circuit board 502. The replacement component 501 has a second through hole for the conductive component to pass through. A conductive clip 405 is soldered onto the first circuit board 402. When the replacement component 501 is inserted into the slot 403, the conductive component 509 is inserted into the conductive clip 405 to make the first circuit board 402 and the second circuit board 502 electrically connected.

[0028] A grounding conductor 406 is fixed inside the base 401. One end of the grounding conductor 406 is electrically connected to the first circuit board 402. The base 401 has a third through hole for the clamp of the grounding conductor 406 to extend out. It also includes a mounting rail 6. The first end of the mounting rail 6 is inserted into the clamp to fix it. The base 401 has a mounting groove 407. The second end of the mounting rail 6 is inserted into the mounting groove 407. A slot 408 is formed on one side of the mounting groove 407. A hollow 409 is formed on the base 401. A gap is provided between the hollow 409 and the slot 408 to increase the stress on the mounting groove 407.

[0029] A plurality of wiring assemblies are provided on the base 401. Each wiring assembly includes a wiring cavity 410 and a wiring hole 411 on the base 401 that communicates with the wiring cavity 410. A wiring conductor 510 is electrically connected to the first circuit board 402. A portion of the wiring conductor 510 extends into the wiring cavity 410. A spring piece 412 is installed in the wiring cavity 410. The first end of the spring piece 412 abuts against the wiring conductor 510, and the second end forms a clamping position 413 between the spring piece 412 and the wiring conductor 510. A connecting wire is inserted into the clamping position from the wiring hole 411. It also includes a button 414 disposed on the base 401. The button 414 abuts against the second end of the spring 412 to open the wire clamping position to facilitate the removal of the connecting wire.

[0030] This invention has a simple structure. It achieves circuit switching through a mechanical linkage method, which is more stable than electronic circuit switching circuits. It is suitable for occasions where the equipment needs to continue operating after being struck by lightning or accidentally short-circuited and blown.

[0031] Several first-part protection circuits can be soldered onto the first circuit board, and several second-part protection circuits that cooperate with the first-part protection circuits can be soldered onto the second circuit board, such as... Figure 10 and Figure 11 As shown, the colors are yellow, blue, and pink. When the first and second circuit boards are connected to the first circuit board via conductive element 509, the protection circuit corresponding to the color is turned on. When the hot melt element melts, the circuit switching conductor controls the separation of the three contacts, thereby disconnecting the protection circuit.

[0032] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will all fall within the scope of protection of the present invention.

Claims

1. A circuit switching structure, characterized in that: include: Hot melt component (2); The transmission assembly (1) is provided with a circuit conversion part (101). After the hot melt part (2) is melted, the transmission assembly (1) moves at least partially to control the circuit conversion part (101) to move from a first position to a second position. The circuit conversion conductor (3) has its first end electrically connected to the first circuit of the first circuit board (402), and its second end is provided with a contact conductive part and can be separated from the second circuit of the first circuit board (402). When the circuit switching unit (101) is in the first position, the contact conductive part is separated from the second circuit; when the circuit switching unit (101) is in the second position, the contact conductive part is in contact with the second circuit and conducts electricity; or, when the circuit switching unit (101) is in the first position, the contact conductive part is in contact with the second circuit and conducts electricity; when the circuit switching unit (101) is in the second position, the contact conductive part is separated from the second circuit.

2. The circuit switching structure according to claim 1, characterized in that: The transmission assembly (1) includes a first transmission member (102) and a second transmission member (103). The first transmission member (102) is provided with a first limiting surface to restrict the second transmission member (103) from moving in a second direction. After the hot melt part (2) melts, the first transmission member (102) moves in a first direction to release the restriction on the second transmission member (103), so that the second transmission member (103) moves in the first direction, thereby causing the control circuit conversion unit (101) to move from the first position to the second position.

3. The circuit switching structure according to claim 2, characterized in that: The transmission assembly (1) includes a circuit conversion push block (104), the circuit conversion part (101) is disposed on the circuit conversion push block (104), and the second transmission member (103) is provided with a contact surface (1031) that cooperates with the circuit conversion push block (104).

4. The circuit switching structure according to claim 3, characterized in that: The circuit conversion push block (104) and the second transmission component (103) can be separated. And / or, also includes a spring (105) that releases the restriction on the spring (105) after the hot melt (2) melts, and the spring (105) pushes the first transmission member (102) in a first direction; And / or, it also includes a torsion spring (106), the circuit conversion push block (104) is provided with a push groove (1041), and one end of the torsion spring (106) is disposed in the push groove (1041). And / or, the circuit conversion push block (104) is provided with a guide wedge block (1042), and the circuit conversion conductor (3) is provided with a first inclined surface (301) that cooperates with the guide wedge block (1042).

5. The circuit switching structure according to claim 4, characterized in that: The first transmission member (102) has an expansion arm (1022) at the end of the middle connecting arm (1021). The expansion arm (1022) has a second inclined surface (1023), and the push block (107) connected to the spring (105) has a third inclined surface (1071) that cooperates with the second inclined surface (1023).

6. The circuit switching structure according to claim 1, characterized in that: It also includes a base (401) and a replacement part (501) detachably connected to the base (401), wherein the hot melt part (2), the first transmission part (102) of the transmission assembly (1), the second transmission part (103) and the spring (105) are disposed on the replacement part (501), and the first circuit board (402) and the circuit conversion push block (104) of the transmission assembly (1) are disposed on the base (401).

7. The circuit switching structure according to claim 6, characterized in that: The outer wall of the replacement part (501) is provided with an elastic arm (503), the elastic arm (503) is provided with a hook (504), the base (401) is provided with a slot (403) for inserting the replacement part (501), and the inner wall of the slot (403) is provided with a groove (404) that cooperates with the hook (504).

8. The circuit switching structure according to claim 6, characterized in that: The replacement part (501) is equipped with a second circuit board (502), and a conductive element (509) is fixed on the second circuit board (502). The replacement part (501) has a second through hole for the conductive element to pass through. A conductive clip (405) is soldered on the first circuit board (402). When the replacement part (501) is inserted into the slot (403), the conductive element (509) is inserted into the conductive clip (405) so that the first circuit board (402) and the second circuit board (502) are electrically connected.

9. The circuit switching structure according to claim 6, characterized in that: A grounding conductor (406) is fixed inside the substrate (401). One end of the grounding conductor (406) is electrically connected to the first circuit board (402). A third through hole is provided on the substrate (401) for the clamp of the grounding conductor (406) to extend out. The substrate (401) also includes a mounting rail (6). The first end of the mounting rail (6) is inserted into the clamp to fix it. A mounting groove (407) is provided on the substrate (401). The second end of the mounting rail (6) is inserted into the mounting groove (407). A slot (408) is provided on one side of the mounting groove (407). A hollow (409) is provided on the substrate (401). A gap is provided between the hollow (409) and the slot (408) to increase the stress of the mounting groove (407).

10. The circuit switching structure according to claim 1, characterized in that: A plurality of wiring assemblies are provided on the substrate (401). The wiring assembly includes a wiring cavity (410) and a wiring hole (411) on the substrate (401) that communicates with the wiring cavity (410). A wiring conductor (510) is electrically connected to the first circuit board (402). Part of the wiring conductor (510) extends into the wiring cavity (410). A spring piece (412) is installed in the wiring cavity (410). The first end of the spring piece (412) abuts against the wiring conductor (510), and the second end forms a clamping position (413) between the spring piece (412) and the wiring conductor (510). The connecting wire is inserted into the clamping position from the wiring hole (411). It also includes a button (414) disposed on the base (401), the button (414) abutting against the second end of the spring (412) to open the wire clamping position to facilitate the removal of the connecting wire.

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