Differential change-over switch

Abstract

The invention discloses a differential change-over switch which comprises a knob, a fixing assembly, a lamplight assembly, a pressing differential assembly, a ratchet wheel assembly and a contact box assembly which are fixedly arranged in sequence from top to bottom. The fixed assembly comprises a panel frame and a fixed frame, the panel frame is fixedly connected with the fixed frame, the knob is inserted into the panel frame in a sliding manner, and four switch directions of pre-closing, closing, pre-opening and opening are arranged at the top of the panel frame; the lamplight assembly comprises a first shell, a lamp bead, a sleeve, a clamping barrel and a pressing barrel, the pressing differential assembly comprises a second shell, a connecting block, a first limiting block, a second limiting block, a rotating block and a driving block, and the lower end of the driving block is in transmission connection with a ratchet wheel of the ratchet wheel assembly; a ratchet wheel of the ratchet wheel assembly is in transmission connection with the contact box assembly. The device has the advantages that rotation limiting is achieved, operation safety and accuracy are guaranteed, lamplight indication is achieved, and lamp beads are convenient to replace.

Description

Technical Field

[0001] This invention relates to the field of changeover switch technology, and particularly to a differential changeover switch. Background Technology

[0002] The pre-opening and pre-closing functions of the transfer switch are mainly used to provide early warning prompts when operating the circuit breaker, ensuring the safety and accuracy of the operation.

[0003] Its specific functions are as follows: Pre-opening function: When preparing to open the circuit breaker, turning the selector switch to the pre-opening position will connect the pre-opening indicator light circuit and send an illumination signal to remind the operator to confirm whether the opening operation is really necessary. At this time, the opening coil will not be activated because there is a resistor and indicator light in series in the circuit, ensuring that the equipment will not be suddenly powered off due to misoperation. It provides a confirmation step to avoid sudden power outage accidents caused by misoperation. The function of pre-closing is as follows: When preparing to close the circuit, turning the selector switch to the pre-closing position will connect the pre-closing indicator light circuit and send a pre-closing signal. Similarly, because there is a resistor and indicator light in series in the circuit, the closing coil will not act immediately, reminding the operator to confirm the correctness of the operation and ensuring the safety of the closing operation. Safety mechanisms include a pre-operation position that provides an intermediate confirmation step, ensuring the stability of contact switching and preventing equipment malfunction due to sudden power outages during operation. The corresponding operation will only be executed after the operator confirms the switch is turned to the fully open or closed position.

[0004] Currently, a patent with authorization announcement number "CN221899933U" discloses a multi-functional changeover switch, including a housing, a knob, and a rotating shaft. The rotating shaft is connected to the knob, and the knob is connected to an elastic pressing structure. The housing includes a positioning plate, on which a limiting module is embedded. The limiting module includes a first limiting ring coaxially arranged and a second limiting ring for supporting the rotation of the rotating shaft. The first limiting ring is located above the second limiting ring, or the second limiting ring is located above the first limiting ring. The first limiting ring is provided with a limiting member for restricting the rotation of the rotating shaft.

[0005] The limiting module includes a first limiting ring coaxially arranged and a second limiting ring for supporting the rotation of the shaft. The inner circumference of the second limiting ring is designed as a circular structure, allowing the shaft to rotate freely within the second limiting ring without restriction. The first limiting ring is provided with limiting elements to restrict the rotation of the shaft, namely, limiting teeth are provided on the inner wall of the first limiting ring, and positioning teeth that abut against the limiting teeth are provided on the shaft. Furthermore, this ensures that the knob abuts against the limiting teeth in all positions.

[0006] However, in actual operation, it can be twisted at any angle in the second limit ring without effective functional position limit, and its specific position cannot be known. Moreover, there is no path limit during rotation. In actual operation, when the operator rotates it, it is easy to cause the rotation direction to be wrong, which will lead to equipment damage. In addition, there is no light setting, which makes it easier to cause rotation errors in dim conditions. Summary of the Invention

[0007] The purpose of this invention is to provide a differential changeover switch with advantages such as rotation limit, ensuring operational safety and accuracy, light indication, and easy replacement of LED beads.

[0008] The above-mentioned technical objective of the present invention is achieved through the following technical solution: A differential selector switch includes, from top to bottom, a knob, a fixing component, a light component, a press-to-differential component, a ratchet component, and a contact box component, which are fixedly placed in sequence. The fixing component includes a panel frame and a fixing frame, which are fixedly connected. The knob is slidably inserted into the panel frame. The top of the panel frame has four switch positions: pre-closing, closing, pre-opening, and opening. The lighting assembly includes a first housing, an LED bead, a sleeve, a clamping cylinder, and a pressing cylinder. The top of the sleeve is fixedly connected to the bottom of the knob. A conductive copper sheet assembly is provided inside the first housing. The LED bead is inserted into the sleeve, with its upper end located inside the knob. The bottom of the LED bead is electrically connected to the conductive copper sheet assembly. The clamping cylinder is inserted into the lower end of the sleeve and is slidably inserted into the upper end of the first housing. The pressing cylinder is slidably inserted into the lower end of the clamping cylinder. The differential pressing assembly includes a second housing, a connecting block, a first limiting block, a second limiting block, a rotating block, and a driving block. The first limiting block and the second limiting block are fixedly located inside the second housing from top to bottom. The rotating block is inserted into the first limiting block and the second limiting block. The connecting block is fixedly connected to the top of the rotating block. The upper end of the connecting block is inserted into the lower end of the inner cavity of the pressing cylinder and the clamping cylinder. The top of the connecting block abuts against the bottom of the sleeve. The driving block is located at the bottom of the second limiting block. The rotating block and the driving block are connected in a transmission manner. A spring is provided between the rotating block and the driving block. The lower end of the driving block is connected in a transmission manner to the ratchet of the ratchet assembly. The ratchet of the ratchet assembly is connected to the contact box assembly in a driving connection.

[0009] The preferred option is as follows: Preferably, the sleeve is a cylindrical block with a vertical cross-section in the shape of a "U", and a first support block is fixedly provided on the inner bottom wall of the sleeve; The top circumferential array of the outer side wall of the sleeve has six first slots. Two of the first slots located in opposite positions have first locking blocks fixedly installed on their side walls. The bottom circumferential array of the knob has six first insert plates fixedly installed. The six first insert plates are respectively inserted into the six first slots. The side walls of the two first insert plates corresponding to the first locking blocks have first square sockets. Each first locking block is respectively inserted into its corresponding first square socket.

[0010] Preferably, the clamping cylinder is a cylinder with a convex vertical cross-section, and the step of the clamping cylinder abuts against the inner top wall of the first outer shell; The clamping cylinder has a first circular groove at its top. The inner bottom wall of the first circular groove of the clamping cylinder is fixed with a second, third, fourth, and fifth arc-shaped locking block arranged in a circular array. The height of the third and fifth locking blocks is two-thirds of the height of the second and fourth locking blocks. The outer diameter of the second, third, fourth, and fifth locking blocks is 0.85 times the outer diameter of the upper end of the clamping cylinder. The inner diameter of the second, third, fourth, and fifth locking blocks is four-fifths of the diameter of the first circular groove. The lower end of the outer side wall of the sleeve is provided with a first annular groove, and the lower end of the outer side wall of the sleeve is provided with a second slot, a third slot, a fourth slot and a fifth slot in a circumferential array. The first annular groove at the lower end of the sleeve is inserted into the first circular groove of the clamping cylinder, and the second, third, fourth and fifth locking blocks are respectively inserted into the second slot, the third slot, the fourth slot and the fifth slot.

[0011] Preferably, the clamping cylinder is a cylinder with a convex vertical cross-section. The top of the clamping cylinder has a plurality of sixth slots arranged in a circular array, and the bottom of the clamping cylinder has a seventh slot. The diameter of the seventh slot is the same as the diameter of the upper end of the clamping cylinder. The inner sidewall of the seventh slot has a plurality of sixth inserts arranged in a circular array. The upper end of the clamping cylinder is inserted into the seventh slot of the clamping cylinder, and the plurality of sixth inserts are respectively inserted into the plurality of sixth slots.

[0012] Preferably, the conductive copper sheet assembly includes a first circular copper sheet, a second circular copper sheet, a first V-shaped copper sheet, a second V-shaped copper sheet, a first connecting copper sheet, and a second connecting copper sheet; The first annular copper sheet is located between the clamping cylinder and the pressing cylinder. A first annular groove is provided at the step of the pressing cylinder. The first annular copper sheet is sleeved on the step of the pressing cylinder. A first square groove is provided at the top of the pressing cylinder. The bottom of the first square groove is flush with the step of the pressing cylinder. The first square groove corresponds to the positions of the third and fifth locking blocks. A second square groove is provided at the position corresponding to the first square groove and the fifth locking block. The bottom of the second square groove is flush with the bottom of the first annular groove. The first annular copper sheet is provided at the second square groove. The first copper sheet has a first bend upwards. The first bend abuts against the fifth locking block. The second annular copper sheet is located between the bottom of the clamping cylinder and the connecting block. The top of the clamping cylinder has an oblong perforation, which is perpendicular to the first square groove. The second annular copper sheet has a second bend at the position corresponding to the third locking block. The second bend passes through the oblong perforation and abuts against the third locking block. One end of the first V-shaped copper sheet and the second V-shaped copper sheet are fixedly connected to the first outer shell. The end of the first V-shaped copper sheet away from the first outer shell abuts against the bottom of the first circular copper sheet, and the end of the second V-shaped copper sheet away from the first outer shell abuts against the bottom of the second circular copper sheet. The first connecting copper piece is inserted into the fifth slot, the first connecting copper piece abuts against the fifth locking block, the bottom of the first connecting copper piece abuts against the top of the first bend, and the top of the first connecting copper piece is provided with a V-shaped third bend. The second connecting copper piece is inserted into the third slot, the second connecting copper piece abuts against the third locking block, the bottom of the second connecting copper piece abuts against the top of the second bend, and the top of the second connecting copper piece is provided with a fourth bend towards the inside of the sleeve; The lower end of the LED bead is engaged in the second and fourth slots, the bottom of the LED bead abuts against the fourth bend, and the side wall of the LED bead abuts against the third bend.

[0013] Preferably, the connecting block is cylindrical, and the top of the clamping cylinder is provided with a first square through hole, the position of which corresponds to the position of the first square groove; The top of the connecting block is fixedly provided with a waist-shaped block. The second circular copper sheet is sleeved on the waist-shaped block and located on the top of the connecting block. The second circular copper sheet abuts against the bottom of the pressing cylinder. The waist-shaped block corresponds to the waist-shaped perforation. The left and right sides of the waist-shaped block are fixedly provided with abutting blocks. The top fifth of the abutting block is flush with the top of the waist-shaped block. The upper end of the abutting block and the top of the waist-shaped block are provided with a first chamfer. The top of the abutting block is provided with a first rounded corner. The second bend is located in the first square perforation. The top of the second bend and the top of the first bend are both provided with a downward-opening "U"-shaped fifth bend towards the waist-shaped block. The upper ends of the two abutting blocks are inserted into their corresponding fifth bends. The bottom of the first connecting copper sheet and the second connecting copper sheet are both fixedly provided with a sixth bend with a vertical cross-section in the shape of a "Z". Each sixth bend abuts against the top of its corresponding fifth bend.

[0014] Preferably, both the first limiting block and the second limiting block are circular, and the outer side walls of both the first limiting block and the second limiting block are provided with four protrusions arranged in a circular array. Inside the first limiting block, a first arc-shaped block, a second arc-shaped block, and a third arc-shaped block are fixedly provided at the 1 o'clock, 4:30, and 8 o'clock positions in a clockwise direction, respectively. Inside the second limiting block, a fourth arc-shaped block, a fifth arc-shaped block, and a sixth arc-shaped block are fixedly installed in the clockwise directions at the two o'clock, seven o'clock, and ten-thirty o'clock positions, respectively. The central angle of the first arc block is 60°, the central angle of the second arc block is 90°, the central angle of the third arc block is 60°, the central angle of the fourth arc block is 60°, the central angle of the fifth arc block is 90°, and the central angle of the sixth arc block is 90°. The rotating block is cylindrical, and its diameter is five-sixths of the inner diameter of the first limiting block and the second limiting block. A circular stop block with a "C" shaped cross-section is fixedly provided on the top of the rotating block. Three trapezoidal insert rods are arranged in a circular array on the top of the rotating block, and three fan-shaped through holes are arranged in a circular array on the top of the rotating block. The three trapezoidal insert rods and the three fan-shaped through holes are staggered. The bottom circumferential array of the connecting block has three first sector blocks, the diameter of which is the same as the inner diameter of the annular stop block. The bottom of each of the three first sector blocks has a trapezoidal insertion hole. The three first sector blocks are inserted into the annular stop block. The three trapezoidal insertion rods are respectively inserted into the three trapezoidal insertion holes. The rotating block has a stop block fixedly provided on its side wall. The diameter of the stop block is the same as the inner diameter of the first limiting block and the second limiting block. The stop block is located between the first arc-shaped block and the third arc-shaped block, and the stop block abuts against the first arc-shaped block.

[0015] Preferably, the driving block is circular, with three second sector blocks arranged in a circular array on the top circumference of the driving block, a plug-in block fixedly provided at the bottom of the driving block, and a circular through hole opened at the center of the top of the driving block; A rotating shaft is fixed at the bottom center of the rotating block. The rotating shaft is inserted into the circular through hole of the driving block. The three second sector blocks of the driving block are respectively inserted into the three sector through holes of the rotating block. The sidewall of the plug block has several vertical grooves, and the plug block is inserted into the ratchet of the ratchet assembly.

[0016] Preferably, the bottom of the rotating block is provided with a third annular groove, and the top of the driving block is provided with a second annular groove corresponding to the third annular groove; The spring is sleeved on the outer wall of the three second sector blocks, with the upper end of the spring located in the third annular groove and the lower end of the spring located in the second annular groove.

[0017] Preferred design: The knob is semi-transparent, with a black analog strip embedded in the upper part of the knob and an arrow.

[0018] In summary, the present invention has the following beneficial effects: 1. By setting up the fixing components, the knobs can be fixed in place, and the panel frame can be fixed to the fixing frame. 2. By using the lighting components and the black simulated strip with arrows embedded in the upper part of the knob, the built-in LEDs can be illuminated from inside the knob. 3. By setting the differential component, it can achieve four switch positions: pre-close (ON), close (ON / C), pre-open (OFF), and open (OFF / C), which can meet the requirements of clockwise closing and counterclockwise opening. The pre-open and pre-close positions are 90° apart, and one operation is completed by two independent steps in sequence. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structural design of the embodiment; Figure 2 This is a partial cross-sectional view of an embodiment; Figure 3 This is a schematic diagram of the knob's structure in an embodiment; Figure 4 This is a schematic diagram of the sleeve structure in the embodiment; Figure 5 This is a schematic diagram of the structure of the clamping cylinder in the embodiment; Figure 6 This is a bottom side view of the structural design of the clamping cylinder in the embodiment; Figure 7This is a schematic diagram of the structural design of the clamping cylinder in the embodiment; Figure 8 This is a schematic diagram of the structural design of the conductive copper sheet assembly in the embodiment; Figure 9 This is a schematic diagram of the structural design of the connecting block in the embodiment; Figure 10 This is a bottom side view of the structural design of the connecting block in the embodiment; Figure 11 This is a schematic diagram of the structural design of the first limiting block in the embodiment; Figure 12 This is a schematic diagram of the structural design of the second limiting block in the embodiment; Figure 13 This is a schematic diagram of the structure of the rotating block in the embodiment; Figure 14 This is a bottom side view of the structural design of the rotating block in the embodiment; Figure 15 This is a schematic diagram of the structural design of the driver block in the embodiment; Figure 16 This is a bottom side view of the structural design diagram of the driving block in the embodiment; Figure 17 This describes the positional relationship between the first limiting block, the second limiting block, and the rotating block in the pre-closed state of the embodiment. Figure 18 This describes the positional relationship between the first limit block, the second limit block, and the rotating block in the closed state of the embodiment. Figure 19 This describes the positional relationship between the first limiting block, the second limiting block, and the rotating block in the pre-division state of the embodiment. Figure 20 This describes the positional relationship between the first limit block, the second limit block, and the rotating block in the tripping state of the embodiment.

[0020] In the diagram, 1. Knob; 2. Fixing assembly; 3. Lighting assembly; 4. Press differential assembly; 5. Ratchet assembly; 6. Contact box assembly; 7. Sleeve; 8. Clamping cylinder; 9. Pressing cylinder; 10. Conductive copper sheet assembly; 11. Connecting block; 12. First limit block; 13. Second limit block; 14. Rotating block; 15. Drive block; 16. Spring; 111. First insertion plate; 112. First square socket; 211. Panel frame; 212. Fixing frame; 311. First outer casing; 312. LED chip; 411. Second outer shell; 711. First support block; 712. First slot; 713. First locking block; 714. First annular groove; 715. Second slot; 716. Third slot; 717. Fourth slot; 718. Fifth slot; 811. First circular groove; 812. Second locking block; 813. Third locking block; 814. Fourth locking block; 815. Fifth locking block; 816. Seventh slot; 817. Sixth insertion block; 818. First annular groove; 819. Waist-shaped perforation; 911. Sixth slot; 912. First square slot; 913. Second square slot; 915. First square perforation; 1010. Third bend; 1011. First circular copper sheet; 1012. Second circular copper sheet; 1013. First V-shaped copper sheet; 1014. Second V-shaped copper sheet; 1015. First connecting copper sheet; 1016. Second connecting copper sheet; 1017. First copper sheet; 1018. First bend; 1019. Second bend; 1020. Fourth bend; 1021. Fifth bend; 1022. Sixth bend; 1111, Waist-shaped block; 1112, Clamping block; 1113, First sector-shaped block; 1114, Trapezoidal insertion hole; 1211, First arc-shaped block; 1212, Second arc-shaped block; 1213, Third arc-shaped block; 1311, Fourth arc-shaped block; 1312, Fifth arc-shaped block; 1313, Sixth arc-shaped block; 1411. Circular stop block; 1412. Trapezoidal insert rod; 1413. Fan-shaped perforation; 1414. Abutment block; 1415. Rotating shaft; 1416. Third circular groove; 1511. Second sector block; 1512. Insert block; 1513. Circular perforation; 1514. Second annular groove. Detailed Implementation

[0021] The present invention will be further described in detail below with reference to the accompanying drawings.

[0022] Identical components are indicated by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to directions in the accompanying drawings.

[0023] Differential selector switch, such as Figures 1-10 As shown, it includes, from top to bottom, a knob 1, a fixing component 2, a light component 3, a press differential component 4, a ratchet component 5, and a contact box component 6, which are fixedly placed in sequence. The fixing method of the fixing component 2, the pressing differential component 4, the ratchet component 5, and the contact box component 6 is the same as that of the existing changeover switch, in which self-tapping screws are passed through and locked from top to bottom.

[0024] Knob 1 is semi-transparent, with a black analog strip embedded in the upper part of knob 1 and an arrow.

[0025] The fixing component 2 includes a panel frame 211 and a fixing frame 212. The panel frame 211 and the fixing frame 212 are fixedly connected. The knob 1 is slidably inserted into the panel frame 211. The panel frame 211, the fixing block, and the connection between the panel frame 211 and the fixing frame 212 are all existing technologies and will not be described in detail here. The top of panel frame 211 has four switch positions: pre-closing, closing, pre-opening, and opening. Pre-closing (ON) is located at the three o'clock position in the clockwise direction, closing (ON / C) is located at the four o'clock position in the clockwise direction, pre-opening (OFF) is located at the twelve o'clock position, and opening (OFF / C) is located at the eleven o'clock position in the clockwise direction.

[0026] The lighting assembly 3 includes a first housing 311, an LED bead 312, a sleeve 7, a clamping cylinder 8, and a pressing cylinder 9. The top of the sleeve 7 is fixedly connected to the bottom of the knob 1. A conductive copper sheet assembly 10 is provided inside the first housing 311. The LED bead 312 is inserted into the sleeve 7. The upper end of the LED bead 312 is located inside the knob 1. The bottom of the LED bead 312 is electrically connected to the conductive copper sheet assembly 10. The conductive copper sheet assembly 10 is connected to an external power source to provide power to the LED bead 312. The clamping cylinder 8 is inserted into the lower end of the sleeve 7 and is slidably inserted into the upper end of the first housing 311. The pressing cylinder 9 is slidably inserted into the lower end of the clamping cylinder 8. The pressing differential assembly 4 includes a second housing 411, a connecting block 11, a first limiting block 12, a second limiting block 13, a rotating block 14, and a driving block 15. The first limiting block 12 and the second limiting block 13 are fixedly located inside the second housing 411 from top to bottom. The rotating block 14 is inserted into the first limiting block 12 and the second limiting block 13. The top of the connecting block 11 is fixedly connected to the top of the rotating block 14. The upper end of the connecting block 11 is inserted into the lower end of the inside of the pressing cylinder 9 and the clamping cylinder 8. The top of the connecting block 11 abuts against the bottom of the sleeve 7. The driving block 15 is located at the bottom of the second limiting block 13. The rotating block 14 and the driving block 15 are connected in a transmission manner. A spring 16 is provided between the rotating block 14 and the driving block 15. The lower end of the driving block 15 is connected in a transmission manner to the ratchet assembly 5. The ratchet of the ratchet assembly 5 is connected to the contact box assembly 6 for transmission. Both the ratchet assembly 5 and the contact box assembly 6 are existing technologies and will not be described in detail here.

[0027] The sleeve 7 is a cylindrical block with a vertical cross-section in the shape of a "U". The inner bottom wall of the sleeve 7 is fixedly provided with a first support block 711. The top circumferential array of the outer side wall of the sleeve 7 has six first slots 712. Two of the first slots 712 located in opposite positions have first locking blocks 713 fixedly installed on their side walls. The bottom circumferential array of the knob 1 has six first insert plates 111 fixedly installed. The six first insert plates 111 are respectively inserted into the six first slots 712. The side walls of the two first insert plates 111 corresponding to the first locking blocks 713 have first square insertion holes 112. Each first locking block 713 is respectively inserted into its corresponding first square insertion hole 112.

[0028] The clamping cylinder 8 is a cylinder with a convex vertical cross-section, and the step of the clamping cylinder 8 abuts against the inner top wall of the first outer shell 311; The top of the clamping cylinder 8 is provided with a first circular groove 811. The inner bottom wall of the first circular groove 811 of the clamping cylinder 8 is fixedly provided with a second locking block 812, a third locking block 813, a fourth locking block 814, and a fifth locking block 815 in a circular array. The height of the third locking block 813 and the fifth locking block 815 is two-thirds of the height of the second locking block 812 and the fourth locking block 814. The outer diameter of the second locking block 812, the third locking block 813, the fourth locking block 814, and the fifth locking block 815 is 0.85 times the outer diameter of the upper end of the clamping cylinder 8. The inner diameter of the second locking block 812, the third locking block 813, the fourth locking block 814, and the fifth locking block 815 is four-fifths of the diameter of the first circular groove 811. The lower end of the outer side wall of the sleeve 7 is provided with a first annular groove 714. The lower end of the outer side wall of the sleeve 7 is provided with a second slot 715, a third slot 716, a fourth slot 717, and a fifth slot 718 arranged in a circular array. The first annular groove 714 at the lower end of the sleeve 7 is inserted into the first circular groove 811 of the clamping cylinder 8. The second locking block 812, the third locking block 813, the fourth locking block 814, and the fifth locking block 815 are respectively inserted into the second slot 715, the third slot 716, the fourth slot 717, and the fifth slot 718.

[0029] The clamping cylinder 9 is a cylinder with a convex vertical cross-section. The top of the clamping cylinder 9 has a number of sixth slots 911 arranged in a circular array. The bottom of the clamping cylinder 8 has a seventh slot 816. The diameter of the seventh slot 816 is the same as the diameter of the upper end of the clamping cylinder 9. The inner side wall of the seventh slot 816 has a number of sixth inserts 817 arranged in a circular array. The upper end of the clamping cylinder 9 is inserted into the seventh slot 816 of the clamping cylinder 8, and the number of sixth inserts 817 are respectively inserted into the number of sixth slots 911.

[0030] The conductive copper sheet assembly 10 includes a first annular copper sheet 1011, a second annular copper sheet 1012, a first V-shaped copper sheet 1013, a second V-shaped copper sheet 1014, a first connecting copper sheet 1015, and a second connecting copper sheet 1016; The first annular copper sheet 1011 is located between the clamping cylinder 8 and the pressing cylinder 9. A first annular groove 818 is provided at the step of the pressing cylinder 9. The first annular copper sheet 1011 is fitted onto the step of the pressing cylinder 9. A first square groove 912 is provided at the top of the pressing cylinder 9. The bottom of the first square groove 912 is flush with the step of the pressing cylinder 9. The first square groove 912 corresponds to the positions of the third locking block 813 and the fifth locking block 815. A second square groove 913 is provided at the position corresponding to the positions of the first square groove 912 and the fifth locking block 815. The bottom of the second square groove 913 is flush with the bottom of the first annular groove 818. A first copper sheet 1017 is provided at the second square groove 913. The first copper sheet 1017 has a first bend 1018 extending upwards. The first bend 1018 abuts against the fifth locking block 815. The second annular copper sheet 1012 is located between the bottom of the clamping cylinder 9 and the connecting block 11. The top of the clamping cylinder 9 is provided with a waist-shaped through hole 819, which is perpendicular to the first square groove 912. The second annular copper sheet 1012 is provided with a second bend 1019 at the position corresponding to the third locking block 813. The second bend 1019 passes through the waist-shaped through hole 819 and abuts against the third locking block 813. One end of the first V-shaped copper sheet 1013 and the second V-shaped copper sheet 1014 are fixedly connected to the first outer shell 311. The end of the first V-shaped copper sheet 1013 away from the first outer shell 311 abuts against the bottom of the first circular copper sheet 1011, and the end of the second V-shaped copper sheet 1014 away from the first outer shell 311 abuts against the bottom of the second circular copper sheet 1012. The first connecting copper piece 1015 is inserted into the fifth slot 718. The first connecting copper piece 1015 abuts against the fifth locking block 815. The bottom of the first connecting copper piece 1015 abuts against the top of the first bend 1018. The top of the first connecting copper piece 1015 is provided with a V-shaped third bend 1010. The second connecting copper piece 1016 is inserted into the third slot 716. The second connecting copper piece 1016 abuts against the third locking block 813. The bottom of the second connecting copper piece 1016 abuts against the top of the second bend 1019. The top of the second connecting copper piece 1016 is provided with a fourth bend 1020 towards the inside of the sleeve 7. The lower end of the LED bead 312 is engaged in the second slot 715 and the fourth slot 717. The bottom of the LED bead 312 abuts against the fourth bend 1020, and the side wall of the LED bead 312 abuts against the third bend 1010.

[0031] The connecting block 11 is cylindrical, and the top of the clamping cylinder 9 is provided with a first square through hole 915, the position of the first square through hole 915 is corresponding to the position of the first square groove 912; A waist-shaped block 1111 is fixedly provided on the top of the connecting block 11. A second circular copper sheet 1012 is fitted onto the waist-shaped block 1111 and located on the top of the connecting block 11. The second circular copper sheet 1012 abuts against the bottom of the clamping cylinder 9. The waist-shaped block 1111 corresponds to the waist-shaped through hole 819. Abutting blocks 1112 are fixedly provided on both the left and right sides of the waist-shaped block 1111. The top fifth of the abutting block 1112 is flush with the top of the waist-shaped block 1111. A first chamfer is provided between the upper end of the abutting block 1112 and the top of the waist-shaped block 1111. The top of the abutting block 1112... The device has a first rounded corner, a second bend 1019 located inside a first square through hole 915, and a U-shaped fifth bend 1021 with an opening facing downwards at the top of the second bend 1019 and the top of the first bend 1018. The upper ends of the two abutting blocks 1112 are inserted into their corresponding fifth bends 1021. The bottoms of the first connecting copper sheet 1015 and the second connecting copper sheet 1016 are fixedly provided with a sixth bend 1022 with a vertical cross section in the shape of a Z. Each sixth bend 1022 abuts against the top of its corresponding fifth bend 1021.

[0032] Both the first limiting block 12 and the second limiting block 13 are circular rings. The outer side walls of the first limiting block 12 and the second limiting block 13 are provided with four protrusions arranged in a circular array. The four protrusions are slidably inserted into the second outer shell 411. The first limiting block 12 has a first arc-shaped block 1211, a second arc-shaped block 1212, and a third arc-shaped block 1213 fixedly installed inside it in a clockwise direction at the 1 o'clock, 4:30, and 8 o'clock positions, respectively. The second limiting block 13 has a fourth arc-shaped block 1311, a fifth arc-shaped block 1312, and a sixth arc-shaped block 1313 fixed inside at the two o'clock, seven o'clock, and ten-thirty o'clock positions respectively in a clockwise direction; The central angle of the first arc block 1211 is 60°, the central angle of the second arc block 1212 is 90°, the central angle of the third arc block 1213 is 60°, the central angle of the fourth arc block 1311 is 60°, the central angle of the fifth arc block 1312 is 90°, and the central angle of the sixth arc block 1313 is 90°. The rotating block 14 is cylindrical, and its diameter is five-sixths of the inner diameter of the first limiting block 12 and the second limiting block 13. A circular stop block 1411 with a "C" shaped cross-section is fixedly provided on the top of the rotating block 14. Three trapezoidal insert rods 1412 are arranged in a circular array on the top of the rotating block 14, and three fan-shaped through holes 1413 are arranged in a circular array on the top of the rotating block 14. The three trapezoidal insert rods 1412 and the three fan-shaped through holes 1413 are interleaved. The bottom circumferential array of the connecting block 11 has three first sector blocks 1113. The diameter of the three first sector blocks 1113 is the same as the inner diameter of the annular stop block 1411. The bottom of the three first sector blocks 1113 is provided with trapezoidal insertion holes 1114. The three first sector blocks 1113 are inserted into the annular stop block 1411. The three trapezoidal insertion rods 1412 are respectively inserted into the three trapezoidal insertion holes 1114. The side wall of the rotating block 14 is fixedly provided with a stop block 1414. The diameter of the stop block 1414 is the same as the inner diameter of the first limiting block 12 and the second limiting block 13. The stop block 1414 is located between the first arc-shaped block 1211 and the third arc-shaped block 1213, and the stop block 1414 abuts against the first arc-shaped block 1211.

[0033] The drive block 15 is circular in shape. Three second sector blocks 1511 are arranged in a circular array on the top circumference of the drive block 15. A plug-in block 1512 is fixedly provided on the bottom of the drive block 15. A circular through hole 1513 is opened at the center of the top of the drive block 15. A rotating shaft 1415 is fixedly provided at the bottom center of the rotating block 14. The rotating shaft 1415 is inserted into the circular through hole 1513 of the driving block 15. The three second sector blocks 1511 of the driving block 15 are respectively inserted into the three sector through holes 1413 of the rotating block 14. The side wall of the plug block 1512 has several vertical grooves, and the plug block 1512 is inserted into the ratchet of the ratchet assembly 5.

[0034] The bottom of the rotating block 14 is provided with a third annular groove 1416, and the top of the driving block 15 is provided with a second annular groove 1514 corresponding to the third annular groove 1416. Spring 16 is sleeved on the outer side wall of the three second sector blocks 1511. The upper end of spring 16 is located in the third annular groove 1416, and the lower end of spring 16 is located in the second annular groove 1514.

[0035] Specific implementation process: Step 1: The initial position is pre-closed. At this time, the abutment 1414 of the rotating block 14 is located between the first arc block 1211 and the third arc block 1213. The abutment 1414 abuts against the first arc block 1211. At this time, the spring 16 is not compressed. Step 2: The operator rotates the selector switch from pre-closed to closed. The operator presses down knob 1, which in turn pushes the light assembly 3 down. The light assembly 3 pushes the abutment block 1414 down through the connecting block 11. The rotating block 14 descends, and the spring 16 is compressed. The three first sector blocks 1113 and the three second sector blocks 1511 intersect each other. At this time, the abutment block 1414 is located between the fourth arc block 1311 and the sixth arc block 1313. The abutment block 1414 abuts against the sixth arc block 1313. At this time, the operator rotates 30° clockwise, and the abutment block 1414 abuts against the fourth arc block 1311. At the same time, the spring 16 rebounds, and the top of the abutment block 1414 abuts against the top of the first arc block 1211. Through the ratchet drive of the ratchet assembly 5, the groove of the contact seat engages with the cam. Step 3: The operator turns the closing switch to the pre-opening position and rotates the knob 1 counterclockwise. The stop block 1414 abuts against the sixth arc block 1313, the spring 16 rebounds, the rotating block 14 rises, and the stop block 1414 is located between the first arc block 1211 and the third arc block 1213. The stop block 1414 abuts against the first arc block 1211. At this time, the side wall of the contact seat cooperates with the cam. The operator rotates the block 1414 counterclockwise by 90°, and the block 1414 abuts against the first arc-shaped block 1211, at which point it is in the pre-separation position; Step four: The operator rotates the pre-opening switch to the open position and presses down knob 1. At this time, the abutment block 1414 is located between the fifth arc block 1312 and the sixth arc block 1313, and the abutment block 1414 abuts against the sixth arc block 1313. At this time, the operator rotates counterclockwise by 30°, and the abutment block 1414 abuts against the fifth arc block 1312. At the same time, the spring 16 rebounds, and the top of the abutment block 1414 abuts against the top of the third arc block 1213. Through the ratchet drive of the ratchet assembly 5, the groove of the contact seat and the cam are in opposite positions.

[0036] This specific embodiment is merely an explanation of the present invention and is not intended to limit the invention. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A differential changeover switch, characterized in that: It includes, from top to bottom, a knob (1), a fixing component (2), a light component (3), a press differential component (4), a ratchet component (5), and a contact box component (6). The fixing component (2) includes a panel frame (211) and a fixing frame (212). The panel frame (211) and the fixing frame (212) are fixedly connected. The knob (1) is slidably inserted into the panel frame (211). The top of the panel frame (211) is provided with four switch positions: pre-closing, closing, pre-opening, and opening. The lighting assembly (3) includes a first housing (311), a lamp bead (312), a sleeve (7), a clamping cylinder (8), and a pressing cylinder (9). The top of the sleeve (7) is fixedly connected to the bottom of the knob (1). A conductive copper sheet assembly (10) is provided inside the first housing (311). The lamp bead (312) is inserted into the sleeve (7). The upper end of the lamp bead (312) is located inside the knob (1). The bottom of the lamp bead (312) is electrically connected to the conductive copper sheet assembly (10). The clamping cylinder (8) is inserted into the lower end of the sleeve (7). The clamping cylinder (8) is slidably inserted into the upper end of the first housing (311). The pressing cylinder (9) is slidably inserted into the lower end of the clamping cylinder (8). The differential pressing assembly (4) includes a second housing (411), a connecting block (11), a first limiting block (12), a second limiting block (13), a rotating block (14), and a driving block (15). The first limiting block (12) and the second limiting block (13) are fixedly located inside the second housing (411) from top to bottom. The rotating block (14) is inserted into the first limiting block (12) and the second limiting block (13). The top of the connecting block (11) and the rotating block (14) are fixed together. The upper end of the connecting block (11) is inserted into the lower end of the inner cavity of the clamping cylinder (9) and the clamping cylinder (8). The top of the connecting block (11) abuts against the bottom of the sleeve (7). The driving block (15) is located at the bottom of the second limiting block (13). The rotating block (14) is connected to the driving block (15) in a transmission manner. A spring (16) is provided between the rotating block (14) and the driving block (15). The lower end of the driving block (15) is connected to the ratchet of the ratchet assembly (5) in a transmission manner. The ratchet of the ratchet assembly (5) is connected to the contact box assembly (6) in a transmission connection.

2. The differential changeover switch according to claim 1, characterized in that: The sleeve (7) is a cylindrical block with a vertical cross section in the shape of "U". The inner bottom wall of the sleeve (7) is fixedly provided with a first support block (711). The top circumferential array of the outer side wall of the sleeve (7) has six first slots (712). Two of the first slots (712) located in opposite positions have first locking blocks (713) fixedly installed on their side walls. The bottom circumferential array of the knob (1) has six first insert plates (111) fixedly installed. The six first insert plates (111) are respectively inserted into the six first slots (712). The side walls of the two first insert plates (111) corresponding to the first locking blocks (713) are each provided with a first square socket (112). Each first locking block (713) is respectively inserted into its corresponding first square socket (112).

3. The differential changeover switch according to claim 2, characterized in that: The clamping cylinder (8) is a cylinder with a "convex" vertical cross section, and the step of the clamping cylinder (8) abuts against the inner top wall of the first outer shell (311); The clamping cylinder (8) has a first circular groove (811) at its top. The inner bottom wall of the first circular groove (811) of the clamping cylinder (8) is fixed with a second, third, fourth, and fifth arc-shaped locking blocks (812, 813, 814, and 815 in a circular array. The height of the third and fifth locking blocks (813 and 815) is two-thirds of the height of the second and fourth locking blocks (812 and 814). The outer diameter of the second, third, fourth, and fifth locking blocks (815) is 0.85 times the outer diameter of the upper end of the clamping cylinder (8). The inner diameter of the second, third, fourth, and fifth locking blocks (812 and 815) is four-fifths of the diameter of the first circular groove (811). The lower end of the outer wall of the sleeve (7) is provided with a first annular groove (714). The lower end of the outer wall of the sleeve (7) is provided with a second slot (715), a third slot (716), a fourth slot (717), and a fifth slot (718) arranged in a circular array. The first annular groove (714) at the lower end of the sleeve (7) is inserted into the first circular groove (811) of the clamping cylinder (8). The second locking block (812), the third locking block (813), the fourth locking block (814), and the fifth locking block (815) are respectively inserted into the second slot (715), the third slot (716), the fourth slot (717), and the fifth slot (718).

4. The differential changeover switch according to claim 3, characterized in that: The clamping cylinder (9) is a cylinder with a "convex" vertical cross section. The top of the clamping cylinder (9) is provided with a number of sixth slots (911) arranged in a circular array. The bottom of the clamping cylinder (8) is provided with a seventh slot (816). The diameter of the seventh slot (816) is the same as the diameter of the upper end of the clamping cylinder (9). The inner side wall of the seventh slot (816) is provided with a number of sixth inserts (817) arranged in a circular array. The upper end of the clamping cylinder (9) is inserted into the seventh slot (816) of the clamping cylinder (8), and the number of sixth inserts (817) are respectively inserted into the number of sixth slots (911).

5. The differential changeover switch according to claim 4, characterized in that: The conductive copper sheet assembly (10) includes a first annular copper sheet (1011), a second annular copper sheet (1012), a first V-shaped copper sheet (1013), a second V-shaped copper sheet (1014), a first connecting copper sheet (1015), and a second connecting copper sheet (1016). The first annular copper sheet (1011) is located between the clamping cylinder (8) and the pressing cylinder (9). A first annular groove (818) is provided at the step of the pressing cylinder (9). The first annular copper sheet (1011) is fitted onto the step of the pressing cylinder (9). A first square groove (912) is provided at the top of the pressing cylinder (9). The bottom of the first square groove (912) is flush with the step of the pressing cylinder (9). The first square groove (912) is connected to the third locking block (813) and the fifth locking block (815). Corresponding to the positions of the first square groove (912) and the fifth card block (815), a second square groove (913) is provided at the corresponding position. The bottom of the second square groove (913) is flush with the bottom of the first annular groove (818). The first annular copper sheet (1011) is located at the second square groove (913) and a first copper sheet (1017) is provided. The first copper sheet (1017) is provided with a first bend (1018) upward. The first bend (1018) abuts against the fifth card block (815). The second annular copper sheet (1012) is located between the bottom of the clamping cylinder (8) and the connecting block (11). The top of the clamping cylinder (8) is provided with a waist-shaped through hole (819). The waist-shaped through hole (819) is perpendicular to the first square groove (912). The second annular copper sheet (1012) is provided with a second bend (1019) at the position corresponding to the third locking block (813). The second bend (1019) passes through the waist-shaped through hole (819) and abuts against the third locking block (813). One end of the first V-shaped copper sheet (1013) and the second V-shaped copper sheet (1014) are fixedly connected to the first outer shell (311). The end of the first V-shaped copper sheet (1013) away from the first outer shell (311) abuts against the bottom of the first circular copper sheet (1011), and the end of the second V-shaped copper sheet (1014) away from the first outer shell (311) abuts against the bottom of the second circular copper sheet (1012). The first connecting copper piece (1015) is inserted into the fifth slot (718), the first connecting copper piece (1015) abuts against the fifth locking block (815), the bottom of the first connecting copper piece (1015) abuts against the top of the first bend (1018), and the top of the first connecting copper piece (1015) is provided with a V-shaped third bend (1010). The second connecting copper piece (1016) is inserted into the third slot (716), the second connecting copper piece (1016) abuts against the third locking block (813), the bottom of the second connecting copper piece (1016) abuts against the top of the second bend (1019), and the top of the second connecting copper piece (1016) is provided with a fourth bend (1020) towards the inside of the sleeve (7). The lower end of the lamp bead (312) is engaged in the second slot (715) and the fourth slot (717), the bottom of the lamp bead (312) abuts against the fourth bend (1020), and the side wall of the lamp bead (312) abuts against the third bend (1010).

6. The differential changeover switch according to claim 5, characterized in that: The connecting block (11) is cylindrical, and the top of the clamping cylinder (9) is provided with a first square through hole (915), the position of the first square through hole (915) is corresponding to the position of the first square groove (912); The top of the connecting block (11) is fixedly provided with a waist-shaped block (1111), and the second circular copper sheet (1012) is sleeved on the waist-shaped block (1111) and located on the top of the connecting block (11). The second circular copper sheet (1012) abuts against the bottom of the pressing cylinder (9). The waist-shaped block (1111) corresponds to the waist-shaped perforation (819). The left and right sides of the waist-shaped block (1111) are fixedly provided with abutting blocks (1112). The top fifth of the abutting block (1112) is flush with the top of the waist-shaped block (1111). The upper end of the abutting block (1112) is provided with a first chamfer between the top of the abutting block (1112) and the top of the waist-shaped block (1111). The top of 12) is provided with a first rounded corner, the second bend (1019) is located in the first square through hole (915), the top of the second bend (1019) and the top of the first bend (1018) are both provided with a U-shaped fifth bend (1021) with an opening facing downwards towards the waist block (1111), the upper ends of the two abutting blocks (1112) are inserted into their corresponding fifth bends (1021), the bottom of the first connecting copper sheet (1015) and the second connecting copper sheet (1016) are both fixed with a sixth bend (1022) with a vertical cross section in the shape of a "Z", and each sixth bend (1022) abuts against the top of its corresponding fifth bend (1021).

7. The differential changeover switch according to claim 6, characterized in that: The first limiting block (12) and the second limiting block (13) are both circular rings, and the outer side walls of the first limiting block (12) and the second limiting block (13) are provided with four protrusions arranged in a circular array. The first limiting block (12) has a first arc-shaped block (1211), a second arc-shaped block (1212), and a third arc-shaped block (1213) fixedly installed in the clockwise direction at the 1 o'clock, 4:30 and 8 o'clock directions, respectively. The second limiting block (13) has a fourth arc-shaped block (1311), a fifth arc-shaped block (1312), and a sixth arc-shaped block (1313) fixedly installed in the clockwise directions at the two o'clock, seven o'clock, and ten-thirty o'clock directions, respectively. The central angle of the first arc block (1211) is 60°, the central angle of the second arc block (1212) is 90°, the central angle of the third arc block (1213) is 60°, the central angle of the fourth arc block (1311) is 60°, the central angle of the fifth arc block (1312) is 90°, and the central angle of the sixth arc block (1313) is 90°. The rotating block (14) is cylindrical, and the diameter of the rotating block (14) is five-sixths of the inner diameter of the first limiting block (12) and the second limiting block (13). The top of the rotating block (14) is fixed with a circular stop block (1411) with a "C" shaped cross section. The top circumference of the rotating block (14) is provided with three trapezoidal insert rods (1412) and three fan-shaped through holes (1413). The three trapezoidal insert rods (1412) and the three fan-shaped through holes (1413) are interleaved. The bottom circumferential array of the connecting block (11) is provided with three first sector blocks (1113), the diameter of the three first sector blocks (1113) is consistent with the inner diameter of the annular stop block (1411), the bottom of the three first sector blocks (1113) is provided with trapezoidal insertion holes (1114), the three first sector blocks (1113) are inserted into the annular stop block (1411), and the three trapezoidal insertion rods (1412) are respectively inserted into the three trapezoidal insertion holes (1114); The rotating block (14) has a stop block (1414) fixedly provided on its side wall. The diameter of the stop block (1414) is the same as the inner diameter of the first limiting block (12) and the second limiting block (13). The stop block (1414) is located between the first arc-shaped block (1211) and the third arc-shaped block (1213). The stop block (1414) abuts against the first arc-shaped block (1211).

8. The differential changeover switch according to claim 7, characterized in that: The driving block (15) is circular in shape. The top circumference of the driving block (15) is provided with three second sector blocks (1511). The bottom of the driving block (15) is fixed with a plug block (1512). A circular through hole (1513) is opened at the top center of the driving block (15). A rotating shaft (1415) is fixedly provided at the bottom center of the rotating block (14). The rotating shaft (1415) is inserted into the circular through hole (1513) of the driving block (15). The three second sector blocks (1511) of the driving block (15) are respectively inserted into the three sector through holes (1413) of the rotating block (14). The side wall of the plug block (1512) is provided with several vertical grooves, and the plug block (1512) is inserted into the ratchet of the ratchet assembly.

9. The differential changeover switch according to claim 8, characterized in that: The bottom of the rotating block (14) is provided with a third annular groove (1416), and the top of the driving block (15) is provided with a second annular groove (1514) corresponding to the third annular groove (1416). The spring (16) is sleeved on the outer side wall of the three second sector blocks (1511). The upper end of the spring (16) is located in the third annular groove (1416), and the lower end of the spring (16) is located in the second annular groove (1514).

10. The differential changeover switch according to claim 9, characterized in that: The knob (1) is semi-transparent, with a black analog strip embedded on the upper part of the knob (1) and an arrow.

Images