CN213123480U - Automobile fault simulation blind setting and detection junction box - Google Patents
Automobile fault simulation blind setting and detection junction box Download PDFInfo
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- CN213123480U CN213123480U CN202021756606.5U CN202021756606U CN213123480U CN 213123480 U CN213123480 U CN 213123480U CN 202021756606 U CN202021756606 U CN 202021756606U CN 213123480 U CN213123480 U CN 213123480U
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Abstract
The utility model discloses an automobile fault simulation blind setting and detection junction box, which comprises an upper panel, a frame, a bottom plate and a box body which is enclosed by the upper panel, the frame, the bottom plate and the three together and has an accommodating space, wherein a circuit board is arranged in the accommodating space, and a fault control circuit, an automobile circuit and a resistance selection circuit are arranged on the circuit board; the automobile circuit is provided with an automobile circuit, and the automobile circuit is provided with a circuit on-off linkage switch; the resistance selection circuit is provided with a resistance circuit, and a resistance on-off linked switch is arranged on the resistance circuit; the panel is provided with an automobile line detection access hole and a resistance detection access hole; a driving button of a linked switch, an automobile line access outlet, a circuit access outlet and a power line access outlet are arranged on the bottom plate; the linkage switch comprises a line on-off linkage switch and a resistance on-off linkage switch; the ganged switch is associated with a fault control circuit. Has the advantages that: the device has wide application range, is convenient for students to test and is beneficial to improving the skill of students.
Description
Technical Field
The utility model relates to an automobile diagnosis maintenance, professional education, skill training and competition instrument field, specifically speaking are blind settlement of automobile fault simulation and detection terminal box.
Background
In recent years, with the rapid development of the automobile industry, the automobile maintenance industry has increasingly demanded high-end technical skill talents for automobiles. The existing school training vehicle can only simulate and set a very simple open circuit fault of safety damage, a relay element fault, a bonding circuit fault and a plug pin withdrawal fault under the condition of not damaging a whole vehicle wire harness, can set few fault types, is troublesome in fault recovery, and cannot meet the requirement of electric control detection and maintenance teaching of a whole vehicle circuit.
Particularly, when line detection and diagnosis are carried out, the conventional method generally adopts a mode of puncturing a line to carry out measurement, damages an original vehicle wire harness, and has fault risk hidden dangers such as open circuit fault, rusting in water inflow, short circuit and the like. The wiring harness connector pin holes are different in size, and when the universal meter is used for measuring the wiring harness connector, a meter pen cannot contact the metal sheet in the plug pin holes sometimes, and the measurement is inconvenient. Meanwhile, a multimeter pen easily causes deformation of pin holes of the wire harness plug, and metal sheets at 2 ends of the wire harness plug cannot be in good contact with each other, so that the hidden troubles of artificial newly-increased virtual connection faults and disconnection faults exist. When a student uses a universal meter to measure whether a power supply line is normal, the standard operation is to use a voltage level, a red meter pen is connected with a power supply circuit, and a black meter pen is grounded; but sometimes carelessly and carelessly during operation, the universal meter knob is placed at the current level, and the ammeter is connected in series between the power supply line and the earth, which is equivalent to the short circuit between the power supply line and the earth, so that the damage of electrical elements and circuits is caused, and even the safety risk of personal injury exists. When the colleges and universities carry out teaching such as circuit detection to the student, the student is long-term, repeated, many batches are pegged graft to car pencil, very easily leads to damage such as pencil stitch, increases the teaching cost, causes the wasting of resources, also does not benefit to the normal development of real teaching of instructing.
Based on the defects, the inventor provides the multifunctional junction box for simulating and detecting the automobile faults, which can be used for practical training teaching or skill competition, but because the junction box is set by the buttons at the corresponding junction heads when the faults are set, for testers or checked personnel, the set positions or lines of the faults can be easily found through the surface of the box body, and the function of hindering the improvement of the student skills is achieved. Therefore, it is necessary to provide a solution to the above-mentioned technical drawbacks.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model provides a blind settlement of car fault simulation and detection terminal box adopts the form that control circuit, link switch combined together, sets up link switch and at automobile line's the relation of arranging and grouping, adopts drive button to carry out random control to the break-make of circuit, and is disguised strong, is convenient for test or examine.
In order to achieve the above purpose, the utility model adopts the following specific technical scheme:
the utility model provides a blind setting of automobile fault simulation and detection terminal box, includes upper portion panel, frame, bottom plate, panel, bottom plate and frame enclose into a box body that has accommodating space jointly, and its key technology lies in: a circuit board is arranged in the accommodating space, a fault control circuit, an automobile circuit and a resistance selection circuit are arranged on the circuit board,
the automobile circuit is provided with at least 24 automobile circuits, and each automobile circuit is provided with a circuit on-off linked switch;
the resistance selection circuit is provided with at least three resistance lines, and each resistance line is provided with a resistance on-off linked switch;
the panel is provided with an automobile line detection access hole and a resistance detection access hole;
a driving button of a linked switch, an automobile line access outlet, a circuit access outlet and a power line access outlet are arranged on the bottom plate; the linkage switch comprises the line on-off linkage switch and the resistor on-off linkage switch; the ganged switch is associated with the fault control circuit.
Adopt above-mentioned technical scheme, through the break-make condition of fault control circuit control car circuit and resistance selection circuit, simulation car circuit trouble, the trouble sets up inside the box body, and box body outside test personnel are difficult to see the trouble condition from the surface, and the disguise is strong, is applicable to examination and experiment, is favorable to improving student's experimental efficiency, and accurate location trouble point, quick troubleshooting improves student's skill.
Further technical scheme, fault control circuit includes total button SB, and this total button SB one end is connected power supply line L, the total button SB other end is connected with four ways branch control circuit: the first branch control circuit, the second branch control circuit, the third branch control circuit and the fourth branch control circuit;
the first branch control circuit comprises a first button SB1, one end of the first button SB1 is connected with the other end of the total button SB, and the other end of the first button SB1 is grounded through a first relay coil KM1 and a fourth relay coil KM4 respectively; the second branch control circuit comprises a second button SB2, one end of the second button SB2 is connected with the other end of the main button SB, and the other end of the second button SB2 is grounded through a second relay coil KM2 and a fifth relay coil KM5 respectively; the third branch control circuit comprises a third button SB3, one end of the third button SB3 is connected with the other end of the main button SB, and the other end of the third button SB3 is grounded through a third relay coil KM3 and a sixth relay coil KM6 respectively;
the normally closed switch KM2-1 of the second relay and the normally closed switch KM3-1 of the third relay are connected to a power supply line of the first relay coil KM 1;
the normally closed switch KM1-1 of the first relay and the normally closed switch KM3-2 of the third relay are connected to a power supply line of the second relay coil KM 2;
the normally closed switch KM1-2 of the first relay and the normally closed switch KM2-2 of the second relay are connected to a power supply line of a third relay coil KM 3;
the fourth branch control circuit comprises a fourth button SB4, one end of the fourth button SB4 is connected with the other end of the total button SB4, and the other end of the fourth button SB4 is grounded through a seventh relay coil KM 7;
a normally open switch KM4-1 of a fourth relay is connected in parallel at two ends of the first button SB 1;
a normally open switch KM5-1 of a fifth relay is connected in parallel at two ends of the second button SB 2;
a normally open switch KM6-1 of a sixth relay is connected in parallel at two ends of the third button SB 3;
and a normally open switch KM7-1 of a seventh relay is connected in parallel with two ends of the fourth button SB 4.
Further, all the automobile lines are divided into four automobile fault line groups: the system comprises a first automobile fault line group, a second automobile fault line group, a third automobile fault line group and a fourth automobile fault line group;
all normally closed switches of the fourth relay are arranged in the automobile lines of the first automobile fault line group in a one-to-one correspondence manner;
all normally closed switches of the fifth relay are arranged in the automobile lines of the second automobile fault line group in a one-to-one correspondence manner;
all normally closed switches of the sixth relay are arranged in the automobile lines of the third automobile fault line group in a one-to-one correspondence manner;
and all normally closed switches of the seventh relay are arranged in the automobile lines of the fourth automobile fault line group in a one-to-one correspondence manner.
Through the scheme, the relay in the fault control circuit is associated with the normally closed relay switch on the automobile circuit, the driving button is controlled, the automobile circuit is grouped, the fault setting of the automobile circuit can be realized, the setting content is not seen from the surface of the box body, the concealment is good, and the training or examination effect is improved.
According to a further technical scheme, the driving buttons of the linkage switch comprise a general button SB, a first button SB1, a second button SB2, a third button SB3 and a fourth button SB 4. The first button SB1, the second button SB2, the third button SB3 and the fourth button SB4 are provided with a group of automobile fault line groups in a one-to-one correspondence.
According to a further technical scheme, fault line indicating lamps are arranged on the bottom plate, the number of the fault line indicating lamps is equal to that of the automobile lines, and the setting positions of all the fault line indicating lamps correspond to the setting positions of all the automobile line access and exit holes one by one.
Further, the fault line indicator lamp is divided into four indicator lamp groups: the first indicator lamp group, the second indicator lamp group, the third indicator lamp group and the fourth indicator lamp group; one end of the first indicator light group is connected with the other end of the first button SB1, and the other end of the first indicator light group is grounded; a first time relay normally-open switch KT1-1 is arranged between the first indicator lamp set and the first button SB1, and the other end of the first button SB1 is grounded through a first time relay coil KT 1; one end of the second indicator light group is connected with the other end of the second button SB2, and the other end of the second indicator light group is grounded; a second time relay normally-open switch KT2-1 is arranged between the second indicator lamp set and the second button SB2, and the other end of the second button SB2 is grounded through a second time relay coil KT 2; one end of the third indicator light group is connected with the other end of the third button SB3, and the other end of the third indicator light group is grounded; a third time relay normally-open switch KT3-1 is arranged between the third indicator lamp set and the third button SB3, and the other end of the third button SB3 is grounded through a third time relay coil KT 3; one end of the fourth indicator light group is connected with the other end of the fourth button SB4, and the other end of the fourth indicator light group is grounded; a fourth time relay normally-open switch KT4-1 is arranged between the fourth indicator lamp set and the fourth button SB4, and the other end of the fourth button SB4 is grounded through a fourth time relay coil KT 4.
In order to indicate a fault, a faulty line is indicated in the form of an indication or the like. And in combination with a time relay, after the fault setting is set, the indicator lamp is turned on in a delayed mode, and indication delay control is carried out. When training, training and timing can be carried out on the training personnel by setting the training test time to be consistent with the delay time. The method is beneficial to the trainers to find out the faults quickly and improve the automobile maintenance skill. When the assessment is carried out, the assessment is timed by setting the lighting time of the indicator lamp, so that assessment grades are favorably scored, and fairness and justness are realized.
Further, the resistance selection circuit includes three resistance branch circuits: a first branch resistance circuit, a second branch resistance circuit, a third branch resistance circuit; a power supply line of the first branch resistance circuit is connected with a first relay normally open switch KM 1-3; a power supply line of the second branch resistance circuit is connected with a second relay normally-open switch KM 2-3; and a power supply line of the third branch resistance circuit is connected with the third relay normally open switch KM 3-3.
The resistance value of the resistor is selected through the relay switch, and the resistance value of the resistor circuit is randomly selected through the button.
The utility model has the advantages that: the junction box is simple in arrangement and can be repeatedly used. The fault setting is high in concealment, examination or test time can be set, the effect of prompting and warning is achieved for trainers, the technical ability of technicians is improved, applicability is high, the connector is connected in a connector mode, and the connector is easy to disassemble and connect.
Drawings
Fig. 1 is a schematic view of a face plate of a junction box of the present invention;
fig. 2 is a schematic bottom plate view of the junction box of the present invention;
FIG. 3 is a fault control circuit diagram;
fig. 4 is a schematic of a vehicle line fault switch connection.
Detailed Description
The following provides a more detailed description of the embodiments and the operation of the present invention with reference to the accompanying drawings.
A vehicle fault simulation blind setting and detection junction box comprises an upper panel, a frame and a bottom plate, wherein the panel, the bottom plate and the frame enclose a box body with an accommodating space, in the embodiment, a circuit board is arranged in the accommodating space, and a fault control circuit, a vehicle circuit and a resistance selection circuit are arranged on the circuit board as can be seen by combining a figure 3;
in this embodiment, as can be seen from fig. 4, fig. 1 and fig. 2, the car line circuit is provided with 24 car lines, and each car line is provided with a line on-off linked switch;
as can be seen from fig. 4, the resistance selection circuit is provided with at least three resistance lines, and each resistance line is provided with a resistance on-off linked switch;
as can be seen from fig. 1, the panel is provided with an automobile line detection access hole and a resistance detection access hole; in this embodiment, the automobile line detection access holes are provided with serial numbers, which is beneficial for students to recognize, and when relevant experiments or examinations are performed, lines with faults are filled in, so that the examinations and checks are facilitated.
As can be seen from fig. 2, the bottom plate is provided with a driving button of the linked switch, an automobile line access outlet, a circuit access outlet and a power line access outlet; the linkage switch comprises the line on-off linkage switch and the resistor on-off linkage switch; the ganged switch is associated with the fault control circuit.
As can be seen in connection with fig. 3, the fault control circuit includes a total button SB, one end of which is connected to the power supply line L, and the other end of which is connected to a four-way branch control circuit: the first branch control circuit, the second branch control circuit, the third branch control circuit and the fourth branch control circuit; the first branch control circuit comprises a first button SB1, one end of the first button SB1 is connected with the other end of the total button SB, and the other end of the first button SB1 is grounded through a first relay coil KM1 and a fourth relay coil KM4 respectively; the second branch control circuit comprises a second button SB2, one end of the second button SB2 is connected with the other end of the main button SB, and the other end of the second button SB2 is grounded through a second relay coil KM2 and a fifth relay coil KM5 respectively; the third branch control circuit comprises a third button SB3, one end of the third button SB3 is connected with the other end of the main button SB, and the other end of the third button SB3 is grounded through a third relay coil KM3 and a sixth relay coil KM6 respectively; the normally closed switch KM2-1 of the second relay and the normally closed switch KM3-1 of the third relay are connected to a power supply line of the first relay coil KM 1; the normally closed switch KM1-1 of the first relay and the normally closed switch KM3-2 of the third relay are connected to a power supply line of the second relay coil KM 2; the normally closed switch KM1-2 of the first relay and the normally closed switch KM2-2 of the second relay are connected to a power supply line of a third relay coil KM 3; the fourth branch control circuit comprises a fourth button SB4, one end of the fourth button SB4 is connected with the other end of the total button SB4, and the other end of the fourth button SB4 is grounded through a seventh relay coil KM 7;
a normally open switch KM4-1 of a fourth relay is connected in parallel at two ends of the first button SB 1;
a normally open switch KM5-1 of a fifth relay is connected in parallel at two ends of the second button SB 2;
a normally open switch KM6-1 of a sixth relay is connected in parallel at two ends of the third button SB 3;
and a normally open switch KM7-1 of a seventh relay is connected in parallel with two ends of the fourth button SB 4.
In this embodiment, a fuse and a thermal relay are further provided on the power supply line L for protecting the circuit.
In the present embodiment, as can be seen in fig. 2, the 24 car lines are divided into four car fault line groups: the system comprises a first automobile fault line group H, a second automobile fault line group K, a third automobile fault line group U and a fourth automobile fault line group P; in the present embodiment, each vehicle fault line group includes 6 vehicle lines.
As can be seen in fig. 4, all normally closed switches of the fourth relay are arranged in the vehicle lines of the first vehicle fault line group in a one-to-one correspondence manner;
as can be seen from fig. 4, all normally closed switches of the fifth relay are arranged in the vehicle lines of the second vehicle fault line group in a one-to-one correspondence manner;
as can be seen in fig. 4, all normally closed switches of the sixth relay are arranged in the vehicle lines of the third vehicle fault line group in a one-to-one correspondence;
as can be seen from fig. 4, all normally closed switches of the seventh relay are arranged in the vehicle lines of the fourth vehicle fault line group in a one-to-one correspondence.
In the present embodiment, as can be seen in conjunction with fig. 3, the actuating buttons of the ganged switch include a general button SB, a first button SB1, a second button SB2, a third button SB3, and a fourth button SB 4.
In this embodiment, as can be seen from fig. 2 and 3, fault line indicating lamps are arranged on the bottom plate, and the number of the fault line indicating lamps is equal to the number of the automobile lines, which are both 24; and the setting positions of all fault line indicating lamps correspond to the setting positions of all automobile line access exit holes one by one.
The fault line indicator lamp is divided into four indicator lamp groups: the first indicator lamp group, the second indicator lamp group, the third indicator lamp group and the fourth indicator lamp group; in the present embodiment, each indicator light group includes 6 indicator lights, and when power is supplied, two indicator lights are connected in series to supply power, see fig. 3 in particular.
As can be seen from fig. 3, one end of the first indicator light group is connected to the other end of the first button SB1, and the other end of the first indicator light group is grounded; a first time relay normally-open switch KT1-1 is arranged between the first indicator lamp set and the first button SB1, and the other end of the first button SB1 is grounded through a first time relay coil KT 1; one end of the second indicator light group is connected with the other end of the second button SB2, and the other end of the second indicator light group is grounded; a second time relay normally-open switch KT2-1 is arranged between the second indicator lamp set and the second button SB2, and the other end of the second button SB2 is grounded through a second time relay coil KT 2;
one end of the third indicator light group is connected with the other end of the third button SB3, and the other end of the third indicator light group is grounded; a third time relay normally-open switch KT3-1 is arranged between the third indicator lamp set and the third button SB3, and the other end of the third button SB3 is grounded through a third time relay coil KT 3; one end of the fourth indicator light group is connected with the other end of the fourth button SB4, and the other end of the fourth indicator light group is grounded; a fourth time relay normally-open switch KT4-1 is arranged between the fourth indicator lamp set and the fourth button SB4, and the other end of the fourth button SB4 is grounded through a fourth time relay coil KT 4.
After a fault occurs for a period of time, the fault indicator lamp is automatically turned on and used for indicating the fault position and the corresponding line. In this embodiment, when performing troubleshooting examination, the examination time is a time relay delay time.
As can be seen in connection with fig. 4, the resistance selection circuit includes three resistance subcircuits: a first branch resistance circuit, a second branch resistance circuit, a third branch resistance circuit; a power supply line of the first branch resistance circuit is connected with a first relay normally open switch KM 1-3; a power supply line of the second branch resistance circuit is connected with a second relay normally-open switch KM 2-3; and a power supply line of the third branch resistance circuit is connected with the third relay normally open switch KM 3-3.
The simulation of oxygen sensor failure is taken as an example for demonstration.
Pull out oxygen sensor pencil connector, look over the connector and be several foot connectors, with corresponding patch cord with the oxygen sensor pencil, be connected with the terminal box, drive button through setting up the terminal box bottom plate, make certain pencil of oxygen sensor nonconducting, take place to open circuit, make the unable normal work of oxygen sensor, realize the function of fault simulation, need do the diagnosis and examine time measuring, the former pencil connector of pegging graft need not relapse, the broken line of probe, can directly utilize the inspection hole, instrument such as convenient and fast use universal meter carries out the action test to its pencil, change convenient and fast.
During competition or during the fault diagnosis skill inspection of students, the students can apply theories to practice by simulating related faults, so that the inspection purpose is achieved, the authenticity of inspection results is guaranteed, and the skill mastering degree of the students is known.
Claims (7)
1. The utility model provides a blind setting of automobile fault simulation and detection terminal box, includes upper portion panel, frame, bottom plate, panel, bottom plate and frame enclose into a box body that has accommodating space jointly, its characterized in that: a circuit board is arranged in the accommodating space, and a fault control circuit, an automobile circuit and a resistor selection circuit are arranged on the circuit board;
the automobile circuit is provided with at least 24 automobile circuits, and each automobile circuit is provided with a circuit on-off linked switch;
the resistance selection circuit is provided with at least three resistance lines, and each resistance line is provided with a resistance on-off linked switch;
the panel is provided with an automobile line detection access hole and a resistance detection access hole;
a driving button of a linked switch, an automobile line access outlet, a circuit access outlet and a power line access outlet are arranged on the bottom plate; the linkage switch comprises the line on-off linkage switch and the resistor on-off linkage switch; the ganged switch is associated with the fault control circuit.
2. The automotive fault simulation blind setup and detection junction box of claim 1, wherein: the fault control circuit comprises a general button SB, one end of the general button SB is connected with a power supply circuit L, and the other end of the general button SB is connected with four branch control circuits: the first branch control circuit, the second branch control circuit, the third branch control circuit and the fourth branch control circuit;
the first branch control circuit comprises a first button SB1, one end of the first button SB1 is connected with the other end of the total button SB, and the other end of the first button SB1 is grounded through a first relay coil KM1 and a fourth relay coil KM4 respectively; the second branch control circuit comprises a second button SB2, one end of the second button SB2 is connected with the other end of the main button SB, and the other end of the second button SB2 is grounded through a second relay coil KM2 and a fifth relay coil KM5 respectively; the third branch control circuit comprises a third button SB3, one end of the third button SB3 is connected with the other end of the main button SB, and the other end of the third button SB3 is grounded through a third relay coil KM3 and a sixth relay coil KM6 respectively;
the normally closed switch KM2-1 of the second relay and the normally closed switch KM3-1 of the third relay are connected to a power supply line of the first relay coil KM 1;
the normally closed switch KM1-1 of the first relay and the normally closed switch KM3-2 of the third relay are connected to a power supply line of the second relay coil KM 2;
the normally closed switch KM1-2 of the first relay and the normally closed switch KM2-2 of the second relay are connected to a power supply line of a third relay coil KM 3;
the fourth branch control circuit comprises a fourth button SB4, one end of the fourth button SB4 is connected with the other end of the total button SB4, and the other end of the fourth button SB4 is grounded through a seventh relay coil KM 7;
a normally open switch KM4-1 of a fourth relay is connected in parallel at two ends of the first button SB 1;
a normally open switch KM5-1 of a fifth relay is connected in parallel at two ends of the second button SB 2;
a normally open switch KM6-1 of a sixth relay is connected in parallel at two ends of the third button SB 3;
and a normally open switch KM7-1 of a seventh relay is connected in parallel with two ends of the fourth button SB 4.
3. The automotive fault simulation blind setup and detection junction box of claim 2, wherein: all the automobile lines are divided into four automobile fault line groups: the system comprises a first automobile fault line group, a second automobile fault line group, a third automobile fault line group and a fourth automobile fault line group;
all normally closed switches of the fourth relay are arranged in the automobile lines of the first automobile fault line group in a one-to-one correspondence manner;
all normally closed switches of the fifth relay are arranged in the automobile lines of the second automobile fault line group in a one-to-one correspondence manner;
all normally closed switches of the sixth relay are arranged in the automobile lines of the third automobile fault line group in a one-to-one correspondence manner;
and all normally closed switches of the seventh relay are arranged in the automobile lines of the fourth automobile fault line group in a one-to-one correspondence manner.
4. The automobile fault simulation blind setting and detecting junction box of claim 3, wherein: the actuating buttons of the ganged switch include a general button SB, a first button SB1, a second button SB2, a third button SB3, and a fourth button SB 4.
5. The automobile fault simulation blind setting and detecting junction box of claim 3, wherein: and fault line indicating lamps are arranged on the bottom plate, the number of the fault line indicating lamps is equal to that of the automobile lines, and the setting positions of all the fault line indicating lamps correspond to the setting positions of all the automobile line access and exit holes one by one.
6. The automobile fault simulation blind setting and detecting junction box of claim 5, wherein: the fault line indicator lamp is divided into four indicator lamp groups: the first indicator lamp group, the second indicator lamp group, the third indicator lamp group and the fourth indicator lamp group;
one end of the first indicator light group is connected with the other end of the first button SB1, and the other end of the first indicator light group is grounded; a first time relay normally-open switch KT1-1 is arranged between the first indicator lamp set and the first button SB1, and the other end of the first button SB1 is grounded through a first time relay coil KT 1;
one end of the second indicator light group is connected with the other end of the second button SB2, and the other end of the second indicator light group is grounded; a second time relay normally-open switch KT2-1 is arranged between the second indicator lamp set and the second button SB2, and the other end of the second button SB2 is grounded through a second time relay coil KT 2;
one end of the third indicator light group is connected with the other end of the third button SB3, and the other end of the third indicator light group is grounded; a third time relay normally-open switch KT3-1 is arranged between the third indicator lamp set and the third button SB3, and the other end of the third button SB3 is grounded through a third time relay coil KT 3;
one end of the fourth indicator light group is connected with the other end of the fourth button SB4, and the other end of the fourth indicator light group is grounded; a fourth time relay normally-open switch KT4-1 is arranged between the fourth indicator lamp set and the fourth button SB4, and the other end of the fourth button SB4 is grounded through a fourth time relay coil KT 4.
7. The automobile fault simulation blind setting and detecting junction box of claim 3, wherein: the resistance selection circuit includes three resistance subcircuits: a first branch resistance circuit, a second branch resistance circuit, a third branch resistance circuit;
a power supply line of the first branch resistance circuit is connected with a first relay normally open switch KM 1-3;
a power supply line of the second branch resistance circuit is connected with a second relay normally-open switch KM 2-3;
and a power supply line of the third branch resistance circuit is connected with the third relay normally open switch KM 3-3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021756606.5U CN213123480U (en) | 2020-08-20 | 2020-08-20 | Automobile fault simulation blind setting and detection junction box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021756606.5U CN213123480U (en) | 2020-08-20 | 2020-08-20 | Automobile fault simulation blind setting and detection junction box |
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| Publication Number | Publication Date |
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| CN213123480U true CN213123480U (en) | 2021-05-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021756606.5U Active CN213123480U (en) | 2020-08-20 | 2020-08-20 | Automobile fault simulation blind setting and detection junction box |
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