An integrated switch and indicator light top-mount electrical box

Abstract

The utility model discloses an upper assembly electric box of integrated switch and pilot lamp, including distribution box casing, the distribution box casing upper portion transverse arrangement multiple distribution unit, multiple distribution units all are fixed on distribution box casing, and distribution unit includes shell, red green double -colored LED pilot lamp, fuse tube, switch, binding post and distribution circuit, red green double -colored LED pilot lamp, fuse tube, switch, binding post all are established on the shell, and the distribution circuit is set up in the shell, and the distribution circuit is connected with red green double -colored LED pilot lamp, fuse tube, switch, binding post electricity. The utility model discloses the upper portion transverse arrangement multiple distribution unit on distribution box casing, and every independent distribution unit has integrated switch, fuse tube, red green double -colored LED pilot lamp and binding post, and the distribution unit is fixed on distribution box casing through the countersunk screw of upper and lower two ends, solved the original special vehicle's upper equipment power cable to and fro wiring, the problem that pilot lamp is not easy to observe.

Description

Technical Field

[0001] This utility model relates to the field of special vehicles, and in particular to an upper electrical box that integrates switches and indicator lights. Background Technology

[0002] The power distribution, switches, and indicators of the equipment on special vehicles are usually distributed separately. Power is distributed from the main power distribution box, the power switch is located on the dashboard, and the power indicator light is provided by the equipment itself.

[0003] Typically, once a special-purpose vehicle is finalized, the chassis remains fixed, while the superstructure varies depending on the vehicle's intended use. If the original approach were followed, adapting to these changes would require redesigning the chassis's main electrical distribution box and dashboard; the power cables would also become longer because they would need to be routed from the distribution box to the dashboard and then from the dashboard to the superstructure; furthermore, some superstructure components are located in difficult-to-observe areas, making their built-in power indicator lights invisible, and even if visible, a non-illuminating light would prevent identification of the problem. Summary of the Invention

[0004] To solve the above-mentioned technical problems, this utility model provides an upper power box for an integrated switch and indicator light that is simple in structure and reliable in operation.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is: an upper power distribution box integrating a switch and an indicator light, including a power distribution box housing, wherein multiple power distribution units are horizontally arranged on the upper part of the power distribution box housing, and the multiple power distribution units are all fixed on the power distribution box housing. Each power distribution unit includes a shell, a red-green dual-color LED indicator light, a fuse tube, a switch, a terminal block, and a power distribution circuit. The red-green dual-color LED indicator light, the fuse tube, the switch, and the terminal block are all arranged on the shell, and the power distribution circuit is arranged inside the shell. The power distribution circuit is electrically connected to the red-green dual-color LED indicator light, the fuse tube, the switch, and the terminal block.

[0006] The aforementioned integrated switch and indicator light are mounted on a power distribution box. The power distribution circuit includes a first resistor, a second resistor, an electrical device, a third resistor, a fourth resistor, a first comparator, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a ninth resistor, a tenth resistor, a second comparator, and an eleventh resistor. The terminals are connected to an external power supply. The external power supply is connected to one end of a fuse, one end of the second resistor, one end of the fifth resistor, one end of the seventh resistor, one end of the ninth resistor, and one end of the eleventh resistor. The other end of the fuse is connected to one end of the switch and one end of the sixth resistor. The other end of the switch is grounded via the electrical device. One end of the first resistor is connected to the other end of the switch. The other end of the first resistor is connected to one end of the third resistor. The first comparator... The non-inverting input of the first comparator is connected to the other end of the second resistor and one end of the fourth resistor. The other end of the fourth resistor is grounded. The output of the first comparator is connected to the other end of the fifth resistor and the G pin of the red-green dual-color LED indicator. The other end of the sixth resistor is connected to the other end of the seventh resistor, one end of the eighth resistor, and the inverting input of the second comparator. The other end of the eighth resistor is grounded. The non-inverting input of the second comparator is connected to the other end of the ninth resistor and one end of the tenth resistor. The other end of the tenth resistor is grounded. The output of the second comparator is connected to the other end of the eleventh resistor and the R pin of the red-green dual-color LED indicator. The cathode of the red-green dual-color LED indicator is grounded.

[0007] The above-mentioned integrated switch and indicator light are mounted on the power box, and the red and green dual-color LED indicator light, fuse tube, switch and terminal are arranged on the housing from top to bottom.

[0008] The above-mentioned integrated switch and indicator light are mounted on a power distribution box, and the power distribution unit is fixed to the power distribution box housing by countersunk screws.

[0009] The above-mentioned integrated switch and indicator light are mounted on a power box, and the outer shell is provided with a fuse tube specification label for indicating the fuse tube specifications at a position above the fuse tube.

[0010] The above-mentioned integrated switch and indicator light are mounted on an electrical box, and the outer shell is provided with an electrical equipment nameplate located below the switch for indicating the name of the electrical equipment.

[0011] The above-mentioned integrated switch and indicator light are mounted on a power distribution box. The bottom of the power distribution box housing is provided with a cover plate for covering the terminal block. The cover plate is installed at the bottom of the power distribution box housing by a hinge.

[0012] The above-mentioned integrated switch and indicator light are mounted on the power distribution box. The cover plate has mounting holes, and the power distribution box housing has threaded holes. The cover plate is screwed on to cover the terminal block and fixed to the threaded holes of the power distribution box housing with screws.

[0013] The above-mentioned integrated switch and indicator light are mounted on a power box, and the first comparator and the second comparator are both LM339.

[0014] The beneficial effects of this utility model are as follows:

[0015] 1. This utility model has multiple power distribution units arranged horizontally on the upper part of the power distribution box housing. Each independent power distribution unit integrates a switch, fuse tube, red and green dual-color LED indicator and terminal block. The power distribution unit is fixed to the power distribution box housing by countersunk screws at the upper and lower ends. This solves the problem of power cables running back and forth and indicator lights being difficult to observe caused by the dispersed arrangement of power distribution, switches and indicator lights in the original special vehicle superstructure equipment. It also eliminates the problem of redesigning the main power distribution box and instrument panel of the chassis when the superstructure equipment changes according to different vehicle uses.

[0016] 2. The power distribution unit of this utility model integrates a switch, a fuse, and a red-green dual-color LED indicator. The working status can be judged by the red-green dual-color LED indicator: when the switch is closed, if the fuse is intact and can supply power normally, the green light will be on; when the switch is closed, if the fuse is burnt out, the red light will be on; when the switch is open, neither the red nor the green light will be on. This solves the problem that the indicator lights of the original special vehicle's superstructure equipment are not easy to observe and there is no fuse burnt out indicator light.

[0017] 3. The bottom of the distribution box housing of this utility model is provided with a cover plate for covering the terminal block. After the power cord of the upper equipment is fastened to the terminal block, the cover plate, which is connected to the distribution box housing by a hinge, is closed to cover and protect the exposed terminal block, thereby improving safety. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the external structure of this utility model.

[0019] Figure 2 This is a schematic diagram of the circuit structure of this utility model. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] like Figure 1As shown, an upper power distribution box integrating a switch and indicator light includes a power distribution box housing. Multiple power distribution units are horizontally arranged on the upper part of the power distribution box housing. Each power distribution unit is fixed to the power distribution box housing by countersunk screws 21. Each power distribution unit includes a housing, a red-green dual-color LED indicator 17, a fuse tube 1, a switch 2, a terminal block 20, and a power distribution circuit. The red-green dual-color LED indicator 17, fuse tube 1, switch 2, and terminal block 20 are arranged sequentially from top to bottom on the housing. A power distribution circuit is arranged inside the housing and is electrically connected to the red-green dual-color LED indicator 17, fuse tube 1, switch 2, and terminal block 20.

[0022] The outer casing is provided with a fuse tube specification label 18 located above the fuse tube 1, which is used to indicate the specification of the fuse tube 1, so that a fuse tube of the same specification can be selected for replacement when the fuse tube burns out.

[0023] The outer casing is provided with an electrical equipment nameplate 19 located below the switch 2 for indicating the name of the electrical equipment.

[0024] The bottom of the distribution box housing is provided with a cover plate 23 for covering the terminal 20. The cover plate 23 is installed at the bottom of the distribution box housing via a hinge 22. The cover plate 23 has mounting holes. After the power cords of the electrical equipment 5 are connected, the cover plate 23 is rotated 180° along the hinge 22 to cover the exposed terminal 20, and is fixed to the threaded holes on both sides of the distribution box housing with screws.

[0025] The first comparator 8 and the second comparator 15 are both LM339.

[0026] like Figure 2As shown, the power distribution circuit includes a 1MΩ first resistor 3, a 20KΩ second resistor 4, an electrical device 5, a 2MΩ third resistor 6, a 20KΩ fourth resistor 7, a first comparator 8, a 2.5KΩ fifth resistor 9, a 2MΩ sixth resistor 10, a 10MΩ seventh resistor 11, a 20MΩ eighth resistor 12, a 20KΩ ninth resistor 13, a 20KΩ tenth resistor 14, a second comparator 15, and a 2.5KΩ eleventh resistor 16. The terminal 20 is connected to an external power supply. The external power supply is connected to one end of fuse 1, one end of the second resistor 4, one end of the fifth resistor 9, one end of the seventh resistor 11, one end of the ninth resistor 13, and one end of the eleventh resistor 16. The other end of fuse 1 is connected to one end of switch 2 and one end of the sixth resistor 10. The other end of switch 2 is grounded after passing through the electrical device 5. One end of the first resistor 3 is connected to the other end of switch 2. The other end of the first resistor 3 is connected to one end of the third resistor 6 and the non-inverting input of the first comparator 8. The other end of the third resistor 6 is grounded. The inverting input of the first comparator 8 is connected to the other end of the second resistor 4 and one end of the fourth resistor 7. The other end of the fourth resistor 7 is grounded. The output of the first comparator 8 is connected to the other end of the fifth resistor 9 and the G pin of the red-green dual-color LED indicator 17. The other end of the sixth resistor 10 is connected to the other end of the seventh resistor 11, one end of the eighth resistor 12 and the inverting input of the second comparator 15. The other end of the eighth resistor 12 is grounded. The non-inverting input of the second comparator 15 is connected to the other end of the ninth resistor 13 and one end of the tenth resistor 14. The other end of the tenth resistor 14 is grounded. The output of the second comparator 15 is connected to the other end of the eleventh resistor 16 and the R pin of the red-green dual-color LED indicator 17. The cathode of the red-green dual-color LED indicator 17 is grounded.

[0027] Figure 2In the diagram, the first resistor 3, the second resistor 4, the third resistor 6, the fourth resistor 7, the first comparator 8, and the fifth resistor 9 form the driving circuit for determining the normal power distribution state. The +24V power supply is divided by the second resistor 4 and the fourth resistor 7, and the reference voltage at the inverting input terminal V- of the first comparator 8 is +12V. When switch 2 is disconnected or fuse 1 burns out, the non-inverting input of the first comparator 8 is grounded through the third resistor 6. The voltage at the non-inverting input of the first comparator 8 is less than the reference voltage at the inverting input of the first comparator 8. The internal transistor of the first comparator 8 connects the output to the negative terminal of the power supply. The output of the first comparator 8 is grounded, and the G pin of the red-green dual-color LED indicator 17 is grounded through the output of the first comparator 8, so the green light is not lit. When switch 2 is closed, the +24V power supply supplies power to the electrical equipment 5 through fuse 1 and switch 2. At the same time, the +24V power supply passes through fuse 1 and switch 2, and then through the voltage divider of the first resistor 3 and the third resistor 6. The comparison voltage at the non-inverting input of the first comparator 8 is +16V, which is greater than the reference voltage at its inverting input. The output of the first comparator 8 is in a high-impedance state, and the +24V power supply is applied to the G pin of the red-green dual-color LED indicator 17 through the fifth resistor 9, so the green light is lit.

[0028] The sixth resistor 10, the seventh resistor 11, the eighth resistor 12, the ninth resistor 13, the tenth resistor 14, the second comparator 15, and the eleventh resistor 16 form the driving circuit for determining the state of the fuse burnout. The +24V power supply is divided by the ninth resistor 13 and the tenth resistor 14, and the reference voltage to the non-inverting input of the second comparator 15 is approximately +12V. When fuse 1 is in normal condition, regardless of whether switch 2 is closed, the sixth resistor 10 is connected in parallel with the seventh resistor 11 through fuse 1. The parallel resistance is approximately 1.67MΩ. The +24V power supply is divided by this 1.67MΩ parallel resistor and the eighth resistor 12, resulting in a comparison voltage of approximately +22V at the inverting input of the second comparator 15. This voltage is greater than the reference voltage at its non-inverting input. The internal transistor of the second comparator 15 connects its output to the negative terminal of the power supply. The output of the second comparator 15 is grounded, and the R pin of the red-green dual-color LED indicator is grounded through the output of the second comparator 15, so the red light is off. When fuse 1 is burnt out, closing switch 2 causes the sixth resistor 10 to connect in series with switch 2, the first resistor 3, and the third resistor 6 to ground. The resistance after series connection is 5MΩ. This 5MΩ resistor and the eighth resistor... 12 resistors are connected in parallel, resulting in a resistance of 4MΩ. The +24V power supply is divided by the seventh resistor 11 and this 4MΩ parallel resistor, and the comparison voltage at the inverting input of the second comparator 15 is approximately +6.9V, which is less than the reference voltage at its non-inverting input. The output of the second comparator 15 is in a high-impedance state, and the +24V power supply is applied to the R pin of the red-green dual-color LED indicator 17 through the eleventh resistor 16, causing the red light to illuminate. With the fuse 1 burnt out, when switch 2 is disconnected, the circuit connecting the sixth resistor 10, switch 2, the first resistor 3, and the third resistor 6 to ground is broken. The +24V power supply is divided by the seventh resistor 11 and the eighth resistor 12, and the comparison voltage at the inverting input of the second comparator 15 is approximately +16V, which is greater than the reference voltage at its non-inverting input. The output of the second comparator 15 is grounded, and the red light does not illuminate.

[0029] This utility model uses a red and green dual-color LED indicator 17 to determine the working status: when testing a single power distribution unit, if the fuse tube 1 is intact and can supply power normally when the switch 2 is closed, the green light will be on; if the fuse tube 1 is burned out when the switch 2 is closed, the red light will be on; when the switch 2 is opened, neither the red nor the green light will be on.

Claims

1. An upper mounting box for integrating switches and indicator lights, characterized in that: The device includes a power distribution box housing. Multiple power distribution units are horizontally arranged on the upper part of the power distribution box housing. The multiple power distribution units are all fixed on the power distribution box housing. Each power distribution unit includes a shell, a red-green dual-color LED indicator, a fuse tube, a switch, a terminal, and a power distribution circuit. The red-green dual-color LED indicator, fuse tube, switch, and terminal are all set on the shell. The power distribution circuit is set inside the shell and is electrically connected to the red-green dual-color LED indicator, fuse tube, switch, and terminal. The power distribution circuit includes a first resistor, a second resistor, an electrical device, a third resistor, a fourth resistor, a first comparator, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a ninth resistor, a tenth resistor, a second comparator, and an eleventh resistor. The terminals are connected to an external power supply. The external power supply is connected to one end of a fuse, one end of the second resistor, one end of the fifth resistor, one end of the seventh resistor, one end of the ninth resistor, and one end of the eleventh resistor. The other end of the fuse is connected to one end of a switch and one end of the sixth resistor. The other end of the switch is grounded after passing through the electrical device. One end of the first resistor is connected to the other end of the switch, and the other end of the first resistor is connected to one end of the third resistor. The non-inverting input of the first comparator is... The third resistor is connected to ground at the other end. The inverting input of the first comparator is connected to the other end of the second resistor and one end of the fourth resistor. The other end of the fourth resistor is grounded. The output of the first comparator is connected to the other end of the fifth resistor and the G pin of the red-green dual-color LED indicator. The other end of the sixth resistor is connected to the other end of the seventh resistor, one end of the eighth resistor, and the inverting input of the second comparator. The other end of the eighth resistor is grounded. The non-inverting input of the second comparator is connected to the other end of the ninth resistor and one end of the tenth resistor. The other end of the tenth resistor is grounded. The output of the second comparator is connected to the other end of the eleventh resistor and the R pin of the red-green dual-color LED indicator. The cathode of the red-green dual-color LED indicator is grounded.

2. The upper mounting box for the integrated switch and indicator light according to claim 1, characterized in that: The red and green dual-color LED indicator, fuse tube, switch, and terminal are arranged sequentially on the outer casing from top to bottom.

3. The upper mounting box for the integrated switch and indicator light according to claim 1, characterized in that: The power distribution unit is fixed to the power distribution box housing by countersunk screws.

4. The upper mounting box for the integrated switch and indicator light according to claim 1, characterized in that: The housing is provided with a fuse tube specification label located above the fuse tube to indicate the fuse tube specifications.

5. The upper mounting box for the integrated switch and indicator light according to claim 1, characterized in that: The outer casing is provided with a nameplate for the electrical equipment located below the switch.

6. The upper mounting box for the integrated switch and indicator light according to claim 1, characterized in that: The bottom of the distribution box housing is provided with a cover plate for covering the terminal blocks, and the cover plate is installed at the bottom of the distribution box housing by a hinge.

7. The upper mounting box for the integrated switch and indicator light according to claim 6, characterized in that: The cover plate has mounting holes, and the distribution box housing has threaded holes. The cover plate is screwed on to cover the terminal block and fixed to the threaded holes of the distribution box housing with screws.

8. The upper mounting box for the integrated switch and indicator light according to claim 1, characterized in that: Both the first and second comparators are LM339.

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