Automobile starter electromagnetic switch test equipment

Abstract

The invention relates to the technical field of automobile starter electromagnetic switches, in particular to automobile starter electromagnetic switch testing equipment which comprises a testing table, an electric power control device arranged on the testing table, a placing barrel arranged on the testing table and connected with the electric power control device, and an electromagnetic switch body movably arranged in the placing barrel. According to the automobile starter electromagnetic switch test equipment, through the configured pressing switching unit, the 30 end of the electromagnetic switch body can be in contact with the movable clamp, the 50 end of the electromagnetic switch body can be connected with the semicircular contact plate, and the resistance of the two terminals of the electromagnetic switch body can be detected through the rotation of the resistance detection assembly. Therefore, the detection of the attraction state is completed, the detection accuracy is remarkably improved, the resistance data when the piston of the electromagnetic switch is pressed and the resistance data in the static state can be accurately obtained, the diversity of the detection data is greatly enriched through the function, and a more comprehensive and accurate basis is provided for the detection work.

Description

Technical Field

[0001] The invention relates to the technical field of automobile starter electromagnetic switches, in particular to automobile starter electromagnetic switch testing equipment. Background Art

[0002] The automobile starter electromagnetic switch is the core component in the automobile engine starting circuit. When the driver turns the key to the start position, it is responsible for connecting the power supply and driving the starter to start the engine. The performance of the electromagnetic switch directly affects the starting efficiency and reliability of the car. Therefore, it is particularly important to test it accurately and efficiently.

[0003] There are various testing items for the starter electromagnetic switch, among which the most critical is the testing of the attraction coil and the holding coil. The starter electromagnetic switch is designed with three electrical connection points: one is directly connected to the electromagnetic switch, one is connected to the rotor starter, and the other is a terminal block for connecting the negative pole of the battery. When testing the attraction coil, the terminal block connected to the electromagnetic switch needs to be connected to the positive pole of the battery, and the negative pole needs to be connected to the terminal block; when testing the holding coil, the terminal block connected to the electromagnetic switch needs to be connected to the positive pole of the battery, and the negative pole of the battery needs to be connected to the outer surface of the electromagnetic switch, so as to determine whether the performance of the electromagnetic switch meets the standards.

[0004] However, the automobile starter electromagnetic switch testing equipment currently on the market generally adopts a step-by-step detection method, that is, the next test can only be carried out after one coil is tested and qualified. This detection process not only increases the complexity of the process, but also the installation time and transportation time required for the two coil tests are relatively long, which undoubtedly reduces the detection efficiency of the electromagnetic switch. Summary of the invention

[0005] A technical problem to be solved by the present application is: how to design a vehicle starter electromagnetic switch test device that can quickly detect the attraction, holding coil and resistance wiring of the electromagnetic switch.

[0006] In order to solve the above technical problems, the embodiment of the present application provides an automobile starter electromagnetic switch test device, including a test bench, a power control device arranged on the test bench, a placement tube arranged on the test bench and connected to the power control device, and an electromagnetic switch body movably arranged inside the placement tube, and also includes:

[0007] An arc-shaped contact plate, wherein the arc-shaped contact plate is movably arranged on the outer surface of the electromagnetic switch body;

[0008] A semicircular contact plate, wherein the semicircular contact plate is movably arranged inside the placement tube, and an inner wall of the semicircular contact plate is movably arranged on a connection terminal of the electromagnetic switch body;

[0009] A movable clamp, wherein the movable clamp is movably arranged inside the electromagnetic switch body, and an inner wall of the movable clamp is movably arranged at a connection terminal of the electromagnetic switch body;

[0010] A pressing switching unit, which is arranged inside the placing cylinder and is used to synchronously drive the pressing switching unit to move the semicircular contact plate away from the terminal of the electromagnetic switch body and fit the arc-shaped contact plate to the outer surface of the electromagnetic switch body after the detection of the attracting coil of the electromagnetic switch body is completed by the cooperation of the movable clamp and the semicircular contact plate. When the top of the electromagnetic switch body is pressed to hold the coil, the semicircular contact plate is moved away from the terminal of the electromagnetic switch body and the arc-shaped contact plate is attached to the outer surface of the electromagnetic switch body so that the semicircular contact plate can be in contact with the terminal of the movable clamp to complete the detection of the holding coil;

[0011] The resistance detection component is arranged at the bottom end of the placement cylinder and is used to perform resistance detection on two connection terminals of the electromagnetic switch body to be detected by rotating the resistance detection component.

[0012] In some embodiments, a connecting groove is provided on the inner wall of the placement tube, and the press switching unit includes a sliding rod movably arranged inside the connecting groove. A straight groove is provided on the top of the placement tube, and the top of the sliding rod passes through the inner wall of the connecting groove and extends to the inside of the straight groove. A lifting rod is movably arranged inside the straight groove, and the bottom end of the lifting rod is arranged at the top of the sliding rod, and a pressing plate is arranged on the top of the lifting rod.

[0013] In some embodiments, a rotating rod is movably provided on the inner wall of the connecting groove, and a gear 2 is sleeved on the outer surface of the rotating rod. A rack 3 is provided on the outer surface of the sliding rod inside the connecting groove, and the rack 3 and the gear 2 are meshed with each other. A gear 1 is sleeved on the outer surface of the rotating rod, and an L-shaped plate 1 is movably provided inside the connecting groove, and the side surface of the L-shaped plate 1 is provided on the side surface of the arc-shaped contact plate. A rack 1 is provided on the bottom of the L-shaped plate 1, and the tooth surface of the rack 1 is movably provided on the outer surface of the gear 1.

[0014] In some embodiments, an L-shaped plate 2 is movably provided on the inner wall of the connecting groove, the side surface of the L-shaped plate 2 is provided on the outer side of the semicircular contact plate, a rack 2 is provided on the top of the L-shaped plate 2, the tooth surface of the rack 2 is movably provided on the outer surface of the gear 1, and the outer surface of the rotating rod is provided with a limiting member for limiting the rotation of the gear 1.

[0015] In some embodiments, the limiting member includes a rotating disk mounted on the outer surface of the rotating rod, the outer surface of the rotating disk is provided with a plurality of slots, the inner wall of the connecting slot is provided with a fixing plate, the bottom of the fixing plate is provided with a straight cylinder, the inner wall of the straight cylinder is movably provided with an iron bead, the outer surface of the iron bead is provided with a strong spring, the bottom end of the strong spring is provided on the inner wall of the straight cylinder, and the outer surface of the iron bead is provided on the inner wall of the corresponding slot.

[0016] In some embodiments, the inner wall of the placement tube is provided with three Y-shaped grooves, and the outer surface of the electromagnetic switch body is provided with three connecting blocks, and the three connecting blocks are movably arranged on the inner walls of the corresponding Y-shaped grooves.

[0017] In some embodiments, the resistance detection component includes a base arranged between the placing tube and the test bench, a rotating disk is movably arranged on the inner wall of the base, a sliding groove is opened on the outer surface of the base, a sliding block is arranged on the outer surface of the rotating disk, the outer surface of the sliding block is arranged on the inner wall of the sliding groove, a pull rod is arranged on the side of the sliding block, a guide column is arranged on the top of the rotating disk, the guide column is movably arranged on the top of the inner wall of the base, a torsion spring is sleeved on the outer surface of the guide column, and the two ends of the torsion spring are respectively movably arranged on the rotating disk and the base.

[0018] In some embodiments, a fixed disk is provided at the top of the rotating disk, two arc-shaped inclined plates are provided at the top of the fixed disk, two circular grooves are opened at the top of the base, and resistance detection rods are movably provided on the inner walls of the two circular grooves. The two resistance detection rods are movably provided at two connection terminals of the bottom plate of the electromagnetic switch body, and tension springs are provided on the outer surfaces of the two resistance detection rods, and one end of the two tension springs is respectively provided on the inner walls of the circular grooves.

[0019] In some embodiments, the bottom ends of the two resistance detection rods are each provided with an inclined block, and the two inclined blocks are movably arranged on the inclined surfaces of the corresponding arc-shaped inclined plates, an arc-shaped groove is opened at the top of the base, and a connecting rod is arranged on the inner wall of the arc-shaped groove, and the side surface of the connecting rod is arranged on the side surface of the movable clamp, and the bottom end of the connecting rod is arranged on the corresponding arc-shaped inclined plate.

[0020] In some embodiments, a square groove is provided on the side of the L-shaped plate close to the semicircular contact plate, a slide plate is movably provided on the inner wall of the square groove, a side plate is provided on the side of the slide plate, and the side plate is provided on the outer side of the semicircular contact plate, and a return spring is provided between the inner wall of the square groove and the side of the slide plate.

[0021] The present invention has at least the following beneficial effects:

[0022] 1. Through the configured press-to-switch unit, the electromagnetic switch can be successfully activated after being placed inside the placement tube. In the initial stage, the 30 end of the electromagnetic switch body will come into contact with the movable clamp, and the 50 terminal will be connected to the semicircular contact plate, thereby completing the detection of the attraction state. Subsequently, in the process of pressing the electromagnetic switch body, the press-to-switch unit will be synchronously driven to open. At this time, the semicircular contact plate will be separated from the 50 terminal, and the arc-shaped contact plate will be placed on the electromagnetic switch housing. This design enables the test results to appear quickly, thereby effectively improving the detection efficiency;

[0023] 2. When testing the electromagnetic switch body, the set limiter can flexibly move back and forth between the semicircular contact plate connected to the 50 terminal or the arc contact plate connected to the electromagnetic switch body. This function allows multiple wiring tests to be performed when testing the attraction coil or the holding coil, thereby significantly improving the accuracy of the test;

[0024] 3. The resistance detection component is specially used for precise resistance detection of the electromagnetic switch body. It can accurately obtain the resistance data when the electromagnetic switch piston is pressed and the resistance data in a static state, and then accurately judge whether the electromagnetic switch is qualified. This function greatly enriches the diversity of the detection data and provides a more comprehensive and accurate basis for the detection work. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 It is a schematic diagram of the cross-sectional structure of the placement tube of the present invention;

[0027] Figure 3 for Figure 2 A schematic diagram of the enlarged structure at A;

[0028] Figure 4 It is a schematic diagram of the exploded structure of the placement cylinder, the electromagnetic switch body and the connection block of the present invention;

[0029] Figure 5 It is a schematic structural diagram of the electromagnetic switch body, the arc-shaped contact plate, the semicircular contact plate and the press-to-switch unit of the present invention;

[0030] Figure 6 It is a schematic structural diagram of the arc-shaped contact plate, the pressing switching unit and the limiting member of the present invention;

[0031] Figure 7 It is a schematic diagram of the exploded structure of the pressing switching unit and the limiting member of the present invention;

[0032] Figure 8 It is a schematic diagram of the structure of the movable clamp and the resistance detection assembly of the present invention;

[0033] Fig. 9 It is a schematic diagram of the explosion structure of the resistance detection component of the present invention;

[0034] Fig.10 It is a schematic diagram of the structure of the rotating disk, torsion spring, guide column and resistance detection rod of the present invention;

[0035] Fig.11 It is a schematic diagram of the structure of the base, the semicircular contact plate and the side plate of the present invention;

[0036] Fig.12It is a schematic structural diagram of the side plate, semicircular contact plate, slide plate and return spring of the present invention.

[0037] In the figure: 1. test bench; 2. power control device; 3. electromagnetic switch body; 4. placement tube; 5. resistance detection component; 51. base; 52. round groove; 53. pull rod; 54. arc groove; 55. slide groove; 56. connecting rod; 57. slider; 58. rotating disk; 59. tension spring; 510. fixed disk; 511. arc inclined plate; 512. resistance detection rod; 513. torsion spring; 514. guide column; 515. inclined block; 6. press switch unit; 61. straight groove; 62. slide rod; 63. connecting groove; 64. press plate ; 65. lifting rod; 66. rotating rod; 67. L-shaped plate one; 68. L-shaped plate two; 69. rack one; 610. rack two; 611. gear one; 612. gear two; 613. rack three; 7. arc contact plate; 8. limiter; 81. rotating disk; 82. fixed plate; 83. slot; 84. straight tube; 85. strong spring; 86. iron bead; 9. Y-shaped slot; 10. connecting block; 11. semicircular contact plate; 12. movable clamp; 13. side plate; 14. square slot; 15. slide plate; 16. reset spring. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] Example 1: Please refer to Figure 1-10 The present invention provides a technical solution: a vehicle starter electromagnetic switch test device, comprising a test bench 1, a power control device 2 arranged on the test bench 1, a placement tube 4 arranged on the test bench 1 and connected to the power control device 2, and an electromagnetic switch body 3 movably arranged inside the placement tube 4, and also comprising:

[0040] An arc-shaped contact plate 7, which is movably arranged on the outer surface of the electromagnetic switch body 3;

[0041] A semicircular contact plate 11, which is movably arranged inside the placement tube 4, and whose inner wall is movably arranged on the connection terminal of the electromagnetic switch body 3, both of which are connected to the positive electrode of the battery;

[0042] The movable clamp 12 is movably arranged inside the electromagnetic switch body 3, and its inner wall is movably arranged at the connection terminal of the electromagnetic switch body 3, and the movable clamp 12 is connected to the negative pole of the battery;

[0043] The pressing switching unit 6 is arranged inside the placing tube 4, and is used for, after the detection of the attracting coil of the electromagnetic switch body 3 is completed by the cooperation of the movable clamp 12 and the semicircular contact plate 11, when the top of the electromagnetic switch body 3 needs to be pressed to hold the coil, the pressing switching unit 6 is synchronously driven to make the semicircular contact plate 11 away from the terminal of the electromagnetic switch body 3, and the arc-shaped contact plate 7 is attached to the outer surface of the electromagnetic switch body 3, so that it can complete the detection of the holding coil by contacting the terminal of the movable clamp 12;

[0044] The resistance detection component 5 is arranged at the bottom end of the placement tube 4 and is used to perform resistance detection on the two connection terminals of the electromagnetic switch body 3 by rotating the resistance detection component 5 .

[0045] A connecting groove 63 is provided on the inner wall of the placing tube 4, and the pressing switching unit 6 includes a sliding rod 62 movably arranged inside the connecting groove 63. A straight groove 61 is provided on the top of the placing tube 4, and the top of the sliding rod 62 passes through the inner wall of the connecting groove 63 and extends to the inside of the straight groove 61. A lifting rod 65 is movably provided inside the straight groove 61, and the bottom end of the lifting rod 65 is arranged at the top of the sliding rod 62. A pressing plate 64 is provided on the top of the lifting rod 65. The pressing plate 64 can drive the lifting rod 65 to slide on the inner wall of the straight groove 61 and drive the sliding rod 62 to move at the same time.

[0046] A rotating rod 66 is movably provided on the inner wall of the connecting groove 63, and a gear 2 612 is sleeved on the outer surface of the rotating rod 66. A rack 3 613 is provided on the outer surface of the sliding rod 62 inside the connecting groove 63. The rack 3 613 and the gear 2 612 are meshed with each other. A gear 1 611 is sleeved on the outer surface of the rotating rod 66. An L-shaped plate 1 67 is movably provided inside the connecting groove 63. The side surface of the L-shaped plate 1 67 is provided on the side surface of the arc-shaped contact plate 7. A rack 1 69 is provided at the bottom of the L-shaped plate 1 67. The tooth surface of the rack 1 69 is movably provided on the outer surface of the gear 1 611. The rack 3 613 is moved by the sliding rod 62. The rack 3 613 will drive the gear 2 612 to rotate. Therefore, the rotating rod 66 is rotated by the rotation of the gear 2 612, and the gear 1 611 can be driven to rotate synchronously.

[0047] An L-shaped plate 68 is movably provided on the inner wall of the connecting groove 63, and the side surface of the L-shaped plate 68 is provided on the outer side of the semicircular contact plate 11. A rack 610 is provided on the top of the L-shaped plate 68. The tooth surface of the rack 610 is movably provided on the outer surface of the gear 1 611. The outer surface of the rotating rod 66 is sleeved with a limiting member 8 for limiting the rotation of the gear 1 611. The rotation of the gear 1 611 can drive the rack 1 69 to move, and can drive the L-shaped plate 1 67 to drive the arc contact plate 7 to move. The rotation of the gear 1 611 will synchronously drive the rack 2 610 to move, and the rack 2 610 will drive the L-shaped plate 2 68 to move, thereby driving the semicircular contact plate 11 to move, so that the movement directions of the L-shaped plate 1 67 and the L-shaped plate 2 68 are opposite.

[0048] The limiting member 8 includes a rotating disk 81 sleeved on the outer surface of the rotating rod 66, and a plurality of slots 83 are opened on the outer surface of the rotating disk 81. A fixing plate 82 is provided on the inner wall of the connecting slot 63, and a straight cylinder 84 is provided at the bottom of the fixing plate 82. An iron bead 86 is movably provided on the inner wall of the straight cylinder 84, and a strong spring 85 is provided on the outer surface of the iron bead 86. The bottom end of the strong spring 85 is provided on the inner wall of the straight cylinder 84, and the outer surface of the iron bead 86 is provided on the inner wall of the corresponding slot 83. The extrusion force of the strong spring 85 will stick the iron bead 86 to the inner wall of the slot 83, thereby achieving a limiting effect.

[0049] The inner wall of the placement tube 4 is provided with three Y-shaped grooves 9, and the outer surface of the electromagnetic switch body 3 is provided with three connecting blocks 10. The three connecting blocks 10 are movably arranged on the inner walls of the corresponding Y-shaped grooves 9 respectively. The Y-shaped arrangement can roughly align the connecting blocks 10 before insertion. After insertion, they will slide from the larger opening to the smaller opening, thereby achieving a quick positioning effect.

[0050] The resistance detection component 5 includes a base 51 arranged between the placement tube 4 and the test bench 1, a rotating disk 58 is movably arranged on the inner wall of the base 51, a slide groove 55 is opened on the outer surface of the base 51, a slider 57 is arranged on the outer surface of the rotating disk 58, the outer surface of the slider 57 is arranged on the inner wall of the slide groove 55, a pull rod 53 is arranged on the side of the slider 57, a guide column 514 is arranged on the top of the rotating disk 58, the guide column 514 is movably arranged on the top of the inner wall of the base 51, a torsion spring 513 is sleeved on the outer surface of the guide column 514, and the two ends of the torsion spring 513 are respectively movably arranged on the rotating disk 58 and the base 51, and the guide column 514 and the torsion spring 513 arranged on the guide column 514 can reset the rotating rotating disk 58.

[0051] A fixed disk 510 is arranged at the top of the rotating disk 58, and two arc-shaped inclined plates 511 are arranged at the top of the fixed disk 510. Two circular grooves 52 are opened at the top of the base 51, and the inner walls of the two circular grooves 52 are movably provided with resistance detection rods 512. The two resistance detection rods 512 are movably provided at the two connection terminals of the bottom plate of the electromagnetic switch body 3, and the outer surfaces of the two resistance detection rods 512 are provided with tension springs 59. One end of the two tension springs 59 is respectively arranged on the inner wall of the circular groove 52. The two resistance detection rods 512 correspond to the positive and negative poles respectively. The tension spring 59 can reset the resistance detection rod 512 to a smaller position after the detection is completed.

[0052] The bottom ends of the two resistance detection rods 512 are each provided with an inclined block 515, and the two inclined blocks 515 are respectively movably arranged on the inclined surfaces of the corresponding arc-shaped inclined plates 511. An arc-shaped groove 54 is opened at the top of the base 51, and a connecting rod 56 is arranged on the inner wall of the arc-shaped groove 54. The side of the connecting rod 56 is arranged on the side of the movable clamp 12, and the bottom end of the connecting rod 56 is arranged on the arc-shaped inclined plate 511. The inclined block 515 can be driven to move through the arc-shaped inclined plate 511, so that the resistance detection rod 512 can be driven to rise.

[0053] When using the device, firstly, the electromagnetic switch body 3 needs to be placed into the inner wall of the placement tube 4, and the three connecting blocks 10 arranged on the outer surface of the electromagnetic switch body 3 are placed into the inner wall of the Y-shaped groove 9. At this time, the electromagnetic switch body 3 will be completely placed into the inner wall of the placement tube 4, and at the same time, the semicircular contact plate 11 will contact the 50 terminal of the electromagnetic switch body 3. The detection of the wire attraction coil can be connected through the power control device 2, and the pressing plate 64 can be pulled back and forth, so that the pressing plate 64 drives the lifting rod 65 to slide on the inner wall of the straight groove 61, and the straight groove 61 drives the sliding rod 62 to move, and the sliding rod 62 will drive the rack three 613 arranged on the outer surface to move, and the rack three 613 will drive the gear two 612 to move, and the gear two 612 drives the rotating rod 6 arranged on the inner wall 6 rotates, the rotating rod 66 drives the gear 1 611 set on the outer surface to rotate, the gear 1 611 drives the rack 2 610 meshing on the outer surface to move, the rack 2 610 drives the L-shaped plate 2 68 to move, so that the semicircular contact plate 11 can be driven to move back and forth, and the detection of the attraction coil is completed. Then the piston on the electromagnetic switch body 3 can be pressed, which will drive the pressing plate 64 to move, and the lifting rod 65 and the sliding rod 62 can drive the rack 3 613 to move, which can drive the gear 1 611 to rotate, and the gear 1 611 will drive the rack 1 69 set on the outer surface to move, so that the rack 1 69 drives the L-shaped plate 1 67 to move, and the arc contact plate 7 is connected to the outer surface of the electromagnetic switch body 3 through the L-shaped plate 1 67 to complete the detection of the holding coil.

[0054] When it is necessary to detect the resistance of the electromagnetic switch body 3, it is necessary to stop the electricity of the holding coil and the attracting coil, and then pull the pull rod 53 to make the slider 57 slide on the inner wall of the slide groove 55. At this time, the slider 57 will drive the rotating disk 58 to rotate on the inner wall of the base 51, and the rotating disk 58 will drive the arc-shaped inclined plate 511 and the fixed disk 510 at the top to rotate. At the same time, the movable clamp 12 will be driven away from the 30 end of the electromagnetic switch body 3 through the connecting rod 56. During the rotation of the rotating disk 58, the inclined surface of the arc-shaped inclined plate 511 will be driven to squeeze the inclined block 515, so that the inclined block 515 rises and drives the resistance detection rod 512 to slide on the inner wall of the circular groove 52, and at the same time, the deformation tension spring 59 is pulled. At this time, the guide column 514 will be rotated to drive the torsion spring 513 to deform. After the resistance detection rod 512 contacts the wiring terminal of the electromagnetic switch body 3, the detection is completed. At this time, the pull rod 53 is released, and the rotating disk 58 will be reset under the action of the torsion spring 513, and the resistance detection rod 512 will be reset under the action of the tension spring 59.

[0055] Example 2: Please refer to Fig.11 and 12 The present invention provides a technical solution: a square groove 14 is provided on the side of the L-shaped plate 67 close to the semicircular contact plate 11, a slide plate 15 is movably provided on the inner wall of the square groove 14, a side plate 13 is provided on the side of the slide plate 15, and the side plate 13 is provided on the outer side of the semicircular contact plate 11, a reset spring 16 is provided between the inner wall of the square groove 14 and the side of the slide plate 15, and the top inner side of the semicircular contact plate 11 is rounded, so that after the 50 terminal arrives, the side plate 13 can be moved, so that the 50 terminal can enter smoothly without getting stuck, and after reaching the position, the slide plate 15 and the side plate 13 will be reset under the action of the reset spring 16, and finally the semicircular contact plate 11 is connected to the outer surface of the 50 terminal.

[0056] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0057] While the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. A vehicle starter electromagnetic switch test device, comprising a test bench (1), a power control device (2) arranged on the test bench (1), a placement tube (4) arranged on the test bench (1) and connected to the power control device (2), and an electromagnetic switch body (3) movably arranged inside the placement tube (4), characterized in that: Also included are: An arc-shaped contact plate (7), wherein the arc-shaped contact plate (7) is movably arranged on the outer surface of the electromagnetic switch body (3); A semicircular contact plate (11), the semicircular contact plate (11) being movably arranged inside the placement tube (4), and the inner wall of the semicircular contact plate (11) being movably arranged on the 50 connection terminal of the electromagnetic switch body (3); A movable clamp (12), the movable clamp (12) being movably arranged inside the electromagnetic switch body (3), and the inner wall of the movable clamp (12) being movably arranged on a 30 connection terminal of the electromagnetic switch body (3); A pressing switching unit (6) is arranged inside the placement tube (4) and is used for, after the detection of the attracting coil of the electromagnetic switch body (3) is completed by the cooperation of the movable clamp (12) and the semicircular contact plate (11), when the top of the electromagnetic switch body (3) needs to be pressed to hold the coil, the pressing switching unit (6) is synchronously driven to make the semicircular contact plate (11) away from the 50 terminal of the electromagnetic switch body (3), and the arc-shaped contact plate (7) is attached to the outer surface of the electromagnetic switch body (3), so that it can contact the 30 terminal of the movable clamp (12) to complete the detection of holding the coil; A resistance detection component (5) is arranged at the bottom end of the placement tube (4) and is used to perform resistance detection on two connection terminals of the electromagnetic switch body (3) to be detected by rotating the resistance detection component (5).

2. The automobile starter electromagnetic switch testing equipment according to claim 1, characterized in that: The inner wall of the placement tube (4) is provided with a connecting groove (63), the pressing switching unit (6) comprises a sliding rod (62) movably arranged inside the connecting groove (63), the top end of the placement tube (4) is provided with a straight groove (61), the top end of the sliding rod (62) penetrates the inner wall of the connecting groove (63) and extends to the inside of the straight groove (61), a lifting rod (65) is movably arranged inside the straight groove (61), the bottom end of the lifting rod (65) is arranged at the top end of the sliding rod (62), and a pressing plate (64) is arranged at the top end of the lifting rod (65).

3. The automobile starter electromagnetic switch testing equipment according to claim 2, characterized in that: A rotating rod (66) is movably provided on the inner wall of the connecting groove (63), and a gear 2 (612) is sleeved on the outer surface of the rotating rod (66). A rack 3 (613) is provided on the outer surface of the sliding rod (62) inside the connecting groove (63), and the rack 3 (613) and the gear 2 (612) are meshed with each other. A gear 1 (611) is sleeved on the outer surface of the rotating rod (66), and an L-shaped plate 1 (67) is movably provided inside the connecting groove (63), and the side surface of the L-shaped plate 1 (67) is arranged on the side surface of the arc-shaped contact plate (7), and a rack 1 (69) is provided at the bottom of the L-shaped plate 1 (67), and the tooth surface of the rack 1 (69) is movably provided on the outer surface of the gear 1 (611).

4. The automobile starter electromagnetic switch testing equipment according to claim 3 is characterized in that: An L-shaped plate 2 (68) is movably provided on the inner wall of the connecting groove (63), the side surface of the L-shaped plate 2 (68) is arranged on the outer side of the semicircular contact plate (11), a rack 2 (610) is arranged on the top of the L-shaped plate 2 (68), the tooth surface of the rack 2 (610) is movably provided on the outer surface of the gear 1 (611), and a limiting member (8) for limiting the rotation of the gear 1 (611) is sleeved on the outer surface of the rotating rod (66).

5. The automobile starter electromagnetic switch testing equipment according to claim 4, characterized in that: The limiting member (8) comprises a rotating disk (81) sleeved on the outer surface of the rotating rod (66); a plurality of slots (83) are provided on the outer surface of the rotating disk (81); a fixing plate (82) is provided on the inner wall of the connecting slot (63); a straight cylinder (84) is provided at the bottom of the fixing plate (82); an iron bead (86) is movably provided on the inner wall of the straight cylinder (84); a strong spring (85) is provided on the outer surface of the iron bead (86); the bottom end of the strong spring (85) is provided on the inner wall of the straight cylinder (84); and the outer surface of the iron bead (86) is provided on the inner wall of the corresponding slot (83).

6. The automobile starter electromagnetic switch testing equipment according to claim 1, characterized in that: The inner wall of the placement tube (4) is provided with three Y-shaped grooves (9), and the outer surface of the electromagnetic switch body (3) is provided with three connection blocks (10). The three connection blocks (10) are movably arranged on the inner walls of the corresponding Y-shaped grooves (9).

7. The automobile starter electromagnetic switch testing equipment according to claim 1, characterized in that: The resistance detection component (5) comprises a base (51) arranged between a placement tube (4) and a test bench (1); a rotating disk (58) is movably arranged on the inner wall of the base (51); a slide groove (55) is provided on the outer surface of the base (51); a slider (57) is arranged on the outer surface of the rotating disk (58); the outer surface of the slider (57) is arranged on the inner wall of the slide groove (55); a pull rod (53) is arranged on the side of the slider (57); a guide column (514) is arranged on the top of the rotating disk (58); the guide column (514) is movably arranged on the top of the inner wall of the base (51); a torsion spring (513) is sleeved on the outer surface of the guide column (514); and the two ends of the torsion spring (513) are movably arranged on the rotating disk (58) and the base (51), respectively.

8. The automobile starter electromagnetic switch testing equipment according to claim 7, characterized in that: A fixed disk (510) is arranged at the top of the rotating disk (58), and two arc-shaped inclined plates (511) are arranged at the top of the fixed disk (510). Two circular grooves (52) are provided at the top of the base (51), and resistance detection rods (512) are movably arranged on the inner walls of the two circular grooves (52). The two resistance detection rods (512) are movably arranged at two connection terminals of the bottom plate of the electromagnetic switch body (3), and tension springs (59) are arranged on the outer surfaces of the two resistance detection rods (512), and one end of the two tension springs (59) is respectively arranged on the inner walls of the circular grooves (52).

9. The automobile starter electromagnetic switch testing equipment according to claim 8, characterized in that: The bottom ends of the two resistance detection rods (512) are each provided with an inclined block (515), and the two inclined blocks (515) are respectively movably arranged on the inclined surfaces of the corresponding arc-shaped inclined plates (511). The top of the base (51) is provided with an arc-shaped groove (54), and the inner wall of the arc-shaped groove (54) is provided with a connecting rod (56), and the side surface of the connecting rod (56) is arranged on the side surface of the movable clamp (12), and the bottom end of the connecting rod (56) is arranged on the corresponding arc-shaped inclined plate (511).

10. The automobile starter electromagnetic switch testing equipment according to claim 9, characterized in that: A square groove (14) is provided on the side of the L-shaped plate (67) close to the semicircular contact plate (11); a slide plate (15) is movably provided on the inner wall of the square groove (14); a side plate (13) is provided on the side of the slide plate (15); the side plate (13) is arranged on the outer side of the semicircular contact plate (11); and a return spring (16) is provided between the inner wall of the square groove (14) and the side of the slide plate (15).

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