Apparatus and method for inspecting the position of a stator coil terminal

Abstract

To determine a failure caused by a contact of coils influencing electrical characteristics and an assembly failure of a post-process by inspecting a posture of a coil terminal.SOLUTION: A posture inspection device for a stator coil terminal for inspecting a coil terminal posture of a coil wound around a stator core 6-1 of a stator 6 constituting a motor comprises: a turntable 1 on which the stator 6 is mounted; a turntable motor 2 which turns the turntable 1; and inspection probes 3-1, 3-2, and 4-1 each inspecting the posture of the coil terminal. The inspection probes 3-1, 3-2, and 4-1 are moved, the turntable motor 2 is driven and the inspection probes 3-1, 3-2, and 4-1 are passed between adjacent coil terminals 6-6, thereby detecting the presence / absence of contacts between the inspection probes 3-1, 3-2, and 4-1 and the coil terminals 6-6.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a manufacturing process for a stator that constitutes a motor, and more particularly to an apparatus and method for inspecting the posture of a stator coil terminal in order to appropriately manage the posture of the coil terminal. [Background technology]

[0002] Generally, a stator coil is a stator core (stator iron core) with multiple coils wound around it, and the stator core has an annular outer shape and multiple teeth (internal teeth) on its inside. The stator coils are inserted into slots formed between adjacent teeth and wound around the teeth.

[0003] Generally, a stator coil has multiple segment coils. The insulating coating on the coil terminals of the segment coils is removed in advance, and the segment coils are inserted into the slots of the stator core. The segment coils are then stacked at the coil terminals of the same phase. The tips of the coil terminals are then joined by welding or the like to manufacture the segment coils.

[0004] Proper management of the coil terminal posture is extremely important in order to prevent short circuit problems and unstable motor characteristics due to contact between coils, and to prevent assembly problems in later processes. Known methods for inspecting the coil terminal posture include visual inspection, electrical continuity inspection, image capture and processing, and image capture using laser irradiation.

[0005] For example, Patent Document 1 describes that in order to ensure that the positional accuracy at the tip of the coil terminal falls within a specified standard value, after the segment coil is assembled to the stator core, and before joining the coil terminals of the same phase, the position of each coil terminal is measured using image measurement to determine whether the positional accuracy is good or bad.

[0006] Furthermore, Patent Document 2 describes a method for detecting the amount of misalignment between two welded ends by irradiating the tip surfaces of the two welded ends with laser light from an oblique direction on first and second lines that cross the mating surface, and calculating the amount of misalignment from an image captured by an imaging device. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] JP 2014-135819 A [Patent Document 2] JP 2020-28904 A Summary of the Invention [Problem to be solved by the invention]

[0008] In the above-mentioned conventional technology, the visual inspection method places a heavy burden on the inspector, and when the inspector becomes fatigued, there is a risk that contact between coil terminals that leads to a short circuit will be overlooked. In addition, the electrical continuity inspection method imposes a time burden depending on the scale of the wiring work. Even if the electrical continuity inspection passes, the coil terminal posture is not known, and it is not possible to judge whether or not a defect will occur in the assembly process in the later process.

[0009] In Patent Document 1, because it relies on image capture and processing, even if image data is simply collected, it is not easy to accurately capture the position of the coil terminal due to the influence of light and shadow. Therefore, some kind of calculation processing and algorithm are required, which results in an expensive inspection system.

[0010] Furthermore, in Patent Document 2, since inspection is performed by irradiating a laser and taking an image, it is not easy to adjust the amount of light of the laser, making it difficult to perform accurate inspection.

[0011] The object of the present invention is to solve the problems of the conventional technology described above and to provide a method and device for inspecting the posture of a stator coil terminal, which is capable of determining whether or not there are defects due to contact between coils that affect electrical characteristics and whether or not defects will occur in subsequent assembly processes by inspecting the posture of the coil terminal. [Means for solving the problem]

[0012] In order to achieve the above object, the present invention has the following configuration.

[0013] [1] A stator coil terminal posture inspection device that inspects the posture of a coil terminal of a coil wound around a stator core of a stator that constitutes a motor, comprising: an inspection probe that inspects the posture of the coil terminal; and a control device that moves the inspection probe at least in the radial direction of the stator coil, passes it through a gap between adjacent coil terminals, and detects whether or not the inspection probe is in contact with the coil terminal. [2] The stator coil terminal posture inspection device described in [1] is characterized in that the inspection probe is set to a value that is a predetermined value smaller than the gap between the coil terminals. [3] The stator coil terminal posture inspection device according to [1] or [2], characterized in that the presence or absence of contact between the inspection probe and the coil terminal is detected by detecting the displacement of the inspection probe using a proximity switch provided near the inspection probe. [4] The posture inspection device for a stator coil terminal described in any one of [1] to [3] is characterized in that it is equipped with a radial unit to which a radial probe is attached as the inspection probe and which can be moved in the up, down, left, and right directions. [5] A method for inspecting the posture of a stator coil terminal, which inspects the posture of a coil terminal of a coil wound around a stator core of a stator that constitutes a motor, comprising the steps of: moving an inspection probe for inspecting the posture of the coil terminal at least in the radial direction of the stator coil, passing it through a gap between adjacent coil terminals, and detecting whether or not the inspection probe is in contact with the coil terminal. [6] The method for inspecting the posture of a stator coil terminal described in [5] is characterized in that the inspection probe for performing the radial inspection is provided as a radial unit to which a radial probe is attached, and the method detects whether or not there is contact between the radial probe and the coil terminal in the radial direction.

[0014] Furthermore, another embodiment of the present invention provides a stator coil terminal posture inspection device that inspects the posture of a coil terminal of a coil wound around a stator core of a stator that constitutes a motor, the device comprising: a turntable on which the stator is placed, a turntable motor that rotates the turntable, an inspection probe that inspects the posture of the coil terminal, and a control device that moves the inspection probe and drives the turntable motor, passes the inspection probe through a gap between adjacent coil terminals, and detects whether or not the inspection probe is in contact with the coil terminal.

[0015] Furthermore, in the above-mentioned stator coil terminal posture inspection device, when the control device detects contact between the inspection probe and the coil terminal, it is preferable that the control device obtains and stores the position from the rotation angle of the rotating table.

[0016] Furthermore, in the above-mentioned stator coil terminal posture inspection device, it is preferable that the inspection probe is set to a value smaller than the gap between the coil terminals by a predetermined value.

[0017] Furthermore, in the above-mentioned stator coil terminal posture inspection device, it is desirable that the presence or absence of contact between the inspection probe and the coil terminal is detected by detecting the displacement of the inspection probe using a proximity switch provided near the inspection probe.

[0018] Furthermore, in the above-mentioned stator coil terminal posture inspection device, it is desirable to provide a circumferential unit to which a circumferential probe is attached as the inspection probe for inspecting the stator in the circumferential direction, and which is movable in the up, down, left and right directions, and a radial unit to which a radial probe is attached as the inspection probe for inspecting the stator in the radial direction, and which is movable in the up, down, left and right directions.

[0019] Furthermore, in the above-mentioned stator coil terminal attitude inspection device, it is preferable that the circumferential probes are provided in a plurality of pieces.

[0020] Furthermore, in the above-mentioned stator coil terminal posture inspection device, it is desirable that the circumferential unit comprises a probe base supported by a linear motion guide from a guide table and to which the circumferential probe is attached, a fulcrum plate supported by a second linear motion guide from the probe base, a spring provided between the probe base and the fulcrum plate for pressing the fulcrum plate downward, and a means for detecting displacement of the fulcrum plate.

[0021] In order to achieve the above-mentioned object, the present invention provides a method for inspecting the posture of a stator coil terminal, which inspects the posture of a coil terminal of a coil wound around a stator core of a stator that constitutes a motor, by moving an inspection probe that inspects the posture of the coil terminal and driving a turntable motor that rotates a turntable on which the stator is placed, and passing the inspection probe through the gap between adjacent coil terminals to detect whether or not there is contact between the inspection probe and the coil terminal.

[0022] In the above-described method for inspecting the attitude of a stator coil terminal, when contact between the inspection probe and the coil terminal is detected, it is preferable to determine and store the position from the rotation angle of the rotating table.

[0023] Moreover, in the above-mentioned method for inspecting the posture of a stator coil terminal, it is preferable to include a circumferential unit to which a circumferential probe is attached as the inspection probe for inspecting the stator in the circumferential direction, and a radial unit to which a radial probe is attached as the inspection probe for inspecting the radial direction, and to detect whether or not there is contact between the circumferential probe and the coil terminal in the circumferential direction of the stator, and to detect whether or not there is contact between the radial probe and the coil terminal in the radial direction. Effect of the Invention

[0024] According to the present invention, the stator coil terminal posture inspection device moves the inspection probe that inspects the posture of the coil terminal and drives the rotary table motor, passes the inspection probe between adjacent coil terminals, and detects whether the inspection probe and the coil terminal are in contact with each other, so that the posture of the coil terminal can be directly inspected. Therefore, the present invention can improve the yield by determining assembly defects in the later process and improve the reliability of the assembled motor. [Brief description of the drawings]

[0025] [Figure 1] FIG. 1 is a perspective view showing a main part of an inspection device according to an embodiment of the present invention; [Diagram 2] A perspective view of a stator 6 constituting a motor to be inspected. [Diagram 3] FIG. 1 is an enlarged view showing details of an inspection unit according to one embodiment; [Figure 4] A flowchart showing a circumferential inspection process according to one embodiment. [Diagram 5] 1 is a flow chart showing a radial inspection process according to one embodiment. [Figure 6] FIG. 1 is a detailed side view of a circumferential unit 3 according to an embodiment; [Figure 7]FIG. 7 is a detailed side view showing a relieving state of the circumferential unit 3 in FIG. [Figure 8] FIG. 13 is a partial enlarged view showing details of a circumferential direction inspection unit according to an embodiment; [Figure 9] FIG. 1 is an enlarged view showing the relationship between the coil end gap and the circumferential probes 3-1 and 3-2 according to one embodiment. [Figure 10] FIG. 13 is a partial enlarged view showing details of a radial inspection unit according to an embodiment; [Figure 11] FIG. 11 is a plan view showing a radial probe 4-1 according to another embodiment; [Figure 12] Further, a detailed side view of the circumferential unit 3 according to another embodiment [Figure 13] FIG. 13 is a detailed side view showing a relieving state of the circumferential unit 3 according to another embodiment of the present invention shown in FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0026] FIG. 1 is a perspective view showing the main parts of the inspection device, and FIG. 2 is a perspective view of a stator 6 that constitutes a motor to be inspected. The stator 6 is placed and set on a rotating table 1. A rotating table motor 2 rotates the rotating table 1 via a belt 2-1. The inspection device passes a rod-shaped inspection probe made of metal or plastic and having a predetermined size between adjacent coil terminals 6-6. The inspection device then detects whether or not there is contact between the inspection probe, which inspects the posture of the coil terminals, and the coil terminals 6-6, and inspects the posture of the coil terminals 6-6.

[0027] The circumferential unit 3 is equipped with circumferential probes 3-1 and 3-2 as inspection probes for inspecting the stator 6 in the circumferential direction, and is movable in the up, down, left and right directions. Similarly, the radial unit 4 is equipped with a radial probe 4-1 as an inspection probe for inspecting the radial direction, and is movable in the up, down, left and right directions. The up and down movements of the circumferential probes 3-1 and 3-2 are performed by an air cylinder 3-15, and the horizontal movement of the radial probe 4-1 is performed by an air cylinder 4-4.

[0028] The stator 6 includes a stator core 6-1 and a stator coil 6-2. The stator core 6-1 has a cylindrical inner peripheral surface 6-3 and a plurality of slots 6-4 drilled radially from the inner peripheral surface 6-3 at equal intervals in the circumferential direction. A U-shaped stator coil 6-2 made of rectangular wire is inserted into the slots 6-4 as a plurality of segment coils stacked in multiple layers in the radial direction.

[0029] The stator coil 6-2 has coil terminals 6-6 that protrude upward by a predetermined length from the upper end of the stator core 6-1. The stator coil 6-2 has coil bridge parts 6-5 that protrude downward by a predetermined length from the lower end of the stator core 6-1. The coil terminals 6-6 are twisted in the circumferential direction to join the coil terminals 6-6 of the same phase inserted in different slots 6-4.

[0030] FIG. 3 is an enlarged view showing the details of the inspection unit. This figure shows an example in which the stator coil 6-2 is stacked in three layers in the radial direction. Therefore, since there are two gaps between the coil terminals 6-6 in the radial direction, the circumferential unit 3 has two circumferential probes 3-1 and 3-2 attached at fulcrums 3-5 and 3-6. The lower end of the circumferential probe 3-1 is at the gap B between the coil terminals, and the upper end extends beyond the fulcrum 3-5. In addition, the length from the lower end to the fulcrum 3-5 is longer than the length from the fulcrum 3-5 to the upper end, and the displacement of the lower end is detected by the proximity SW 3-3 provided near the upper end, which detects the displacement of the circumferential probe 3-2 on the outer periphery.

[0031] The same is true for the inner circumference side, and the displacement of the lower end of the circumferential probe 3-1 on the inner circumference side is detected by the proximity SW 3-4 provided at the upper end. When three or more layers are stacked, the number of circumferential probes 3-1 and 3-2 may be increased to two or more. In addition, in FIG. 3, the displacement detection of the circumferential probes 3-1 and 3-2 is performed by the proximity SW 3-3 and 3-4 provided at the upper end, but it is not limited to the upper end, and may be performed at the lower end side or horizontal position from the fulcrums 3-5 and 3-6. In other words, the presence or absence of contact between the inspection probe and the coil terminal 6-6 is detected by detecting the displacement of the inspection probe by the proximity SW 3-3 and 3-4 provided near the inspection probe.

[0032] Similarly, the radial unit 4 has a radial probe 4-1 attached at a fulcrum 4-3. The length from the lower end to the fulcrum 4-3 is longer than the length from the fulcrum 4-3 to the upper end, and the displacement at the lower end is detected by the proximity switch 4-2 provided at the upper end. Each of the circumferential probes 3-1, 3-2 and the radial probe 4-1 is made of metal, and each of the proximity switches 3-3, 3-4, 4-2 is suitably a magnetic type non-contact displacement sensor.

[0033] Although not shown, the inspection device is provided with a control device having a storage device. The control device moves the circumferential unit 3 and the radial unit 4 and drives the turntable motor 2, and passes the circumferential unit 3 and the radial unit 4 between adjacent coil terminals 6-6. The control device receives inputs from the proximity switches 3-3, 3-4, 4-2, etc., and detects whether or not there is contact between the circumferential probes 3-1, 3-2 and the radial probe 4-1 and the coil terminals 6-6, stores the positions where there is contact, and generates an alarm, etc.

[0034] 4 is a flowchart showing the circumferential inspection process, FIG. 5 is a flowchart showing the radial inspection process, FIG. 6 is a detailed side view of the circumferential unit 3, FIG. 7 is a detailed side view showing the relieving state of the circumferential unit 3, FIG. 8 is a partially enlarged view showing details of the circumferential inspection section, FIG. 9 is an enlarged view showing the relationship between the gap between the coil terminals 6-6 and the circumferential probes 3-1 and 3-2, and FIG. 10 is a partially enlarged view showing details of the radial inspection section.

[0035] First, an inspection worker assembles the stator coil 6-2 to the stator core 6-1 and welds the coil terminals 6-6, and then sets the stator 6, which is the item to be inspected, on the rotating table 1 of the inspection device. Next, the lower ends of the circumferential probes 3-1 and 3-2 of the circumferential unit 3 are lowered by the air cylinder 3-15 to the bottom of the gap B between the coil terminals.

[0036] As shown in Fig. 6, the circumferential unit 3 has a probe base 3-11 supported by a linear motion guide 3-7 from a guide table 3-10, and the circumferential probes 3-1 and 3-2 are moved up and down by an air cylinder 3-15. The probe base 3-11 is equipped with proximity switches 3-3 and 3-4. The fulcrum plate 3-12 is supported by a second linear motion guide 3-8 from the probe base 3-11.

[0037] The spring 3-9 is provided between the probe base 3-11 and the fulcrum plate 3-12, and presses the fulcrum plate 3-12 downward. The circumferential probes 3-1 and 3-2 are axially supported by a fulcrum 3-5 of the fulcrum plate 3-12. The second proximity SW 3-13 detects the displacement of the fulcrum plate 3-12.

[0038] Fig. 7 shows the state (relieving state) when the lower ends of the circumferential probes 3-1, 3-2 cannot descend to the bottom of the gap B between the coil terminals and come into contact with the coil terminal 6-6. In this state, an upward force is applied to the fulcrum plate 3-12 as shown by the arrow, but this is relieved (buffered) by the spring 3-9, and the circumferential probes 3-1, 3-2 are structured to escape upward by the second linear motion guide 3-8. Also, during relieving, the second proximity SW 3-13, which serves as a means for detecting the displacement of the fulcrum plate 3-12, is turned off, making detection possible.

[0039] After the lower ends of the circumferential probes 3-1 and 3-2 have moved to the bottom of the gap B between the coil terminals, the rotating table 1 rotates as shown by the arrow in FIG. 8. In this way, the control device passes the circumferential probes 3-1 and 3-2, which are inspection probes, through the gap B between the adjacent coil terminals to detect the presence or absence of contact between the coil terminals 6-6. If the gap B between the coil terminals is inappropriate and the circumferential probes 3-1 and 3-2 come into contact with the coil terminals 6-6, the circumferential probes 3-1 and 3-2 rotate around the fulcrum 3-5. This movement is detected by the detection point 3-14 moving away from the proximity switches 3-3 and 3-4.

[0040] When contact is detected, the posture inspection device can select Case 1, "stop the inspection and issue an alarm," or Case 2, "continue the inspection and issue an alarm after all inspections are completed." This selection is determined according to the request of the customer, etc. Also, the control device obtains the contact position from the reference position 6-7 in the rotation direction of the stator 6 based on the rotation angle of the turntable 1 at the time when contact was detected, and stores it.

[0041] If the control device detects no contact even after rotating the rotating table 1 once, it determines that the attitude of the coil terminal 6-6 in the circumferential direction is good, and moves the circumferential unit 3 upward from the coil terminal 6-6 and returns it to its original position. Note that the circumferential rotation of the rotating table 1 takes 6 seconds or less per revolution.

[0042] As shown in FIG. 9, the circumferential probes 3-1 and 3-2, which are inspection probes, are rod-shaped, and their diameter (probe diameter A) is set to a value smaller than the gap B between the coil terminals by a predetermined value in order to properly maintain the posture of the coil terminal 6-6. The predetermined value is preferably 0.6 to 1.0 mm. These values ​​are determined based on the variation in the width of the welded portion. The radial probe 4-1 is also similar, and its diameter is almost the same as that of the circumferential probes 3-1 and 3-2.

[0043] If the coil terminal 6-6 is not in the proper position and falls or shifts, the gap B between the coil terminals becomes smaller than the diameter of the circumferential probes 3-1 and 3-2. Therefore, the circumferential probes 3-1 and 3-2 come into contact with the coil terminal 6-6 and rotate around the fulcrum 3-5. The proximity switches 3-3 and 3-4 detect the rotation of the circumferential probes 3-1 and 3-2 and turn on. The control device judges the product to be non-conforming and selects the product as non-conforming.

[0044] After the circumferential unit 3 returns to its original position, the radial unit 4 descends to the coil terminal 6-6, and the lower end of the radial probe 4-1 descends to the bottom of the gap C1 between the coil terminals, as shown in the flow chart of FIG. 5. Then, in the initial position, the radial probe 4-1 is reciprocated in the radial direction as shown in FIG. 10. As a result, the control device passes the radial probe 4-1, which is an inspection probe, through the gaps C1 to C3 between the adjacent coil terminals (see FIG. 11) to detect whether or not it is in contact with the coil terminal 6-6. After the initial position is completed, the rotating table 1 is rotated by a predetermined angle, and the detection of whether or not it is in contact is repeated until the entire circumference is completed.

[0045] The speed at which the radial probe 4-1 and the rotating table 1 are rotated is adjusted so that the inspection time for the entire circumference is 30 seconds or less. In general, 60 to 70 seconds or less is desirable. The clearance C1 between the coil terminals on the innermost radial side is the narrowest compared to the outer side, and is more prone to non-conformities in manufacturing compared to the outer side, so the diameter of the radial probe 4-1 is set based on the clearance C1 between the coil terminals on the innermost radial side.

[0046] As with the circumferential direction, when contact is detected, the posture inspection device can select Case 1, "stop the inspection and issue an alarm," or Case 2, "continue the inspection and issue an alarm after all inspections are completed."Then, the control device obtains the contact position from the reference position 6-7 in the rotation direction of the stator 6 based on the rotation angle of the turntable 1 at the time of contact and stores it.

[0047] After all inspections of the stator coil 6-2 are completed, if the product passes the inspection, an output to that effect is issued. If contact is detected, the position of the contact is output. In the above description, the circumferential inspection process is performed before the radial inspection process, but the order may be reversed, with the radial inspection process being performed before the circumferential inspection process. In any case, this inspection method can directly determine the attitude of the coil terminal 6-6 itself, improving the yield in assembling the motor and improving the reliability of the final assembled motor.

[0048] FIG. 11 is a plan view showing another embodiment of the radial probe 4-1. The radial probe 4-1 shown in FIG. 10 is set based on the gap C1 between the coil terminals on the innermost circumference side, and detects the presence or absence of contact with the radial probe 4-1 having the same diameter from the inside to the outer circumference side. For example, it is preferable that the diameter of the radial probe 4-1 shown in FIG. 10 is the gap C1 between the coil terminals on the innermost circumference side - (0.6 to 1) mm. However, when inspecting the outer circumference side as well, that is, when checking that the coil terminal 6-6 on the outer circumference side is not tilted, it is preferable to make the radial probe 4-1 trapezoidal in plan view.

[0049] When the radial probe 4-1 is trapezoidal as shown in FIG. 11, it is preferable that the innermost probe diameter A1 is the gap C1-(0.6 to 1) mm between the coil terminals on the innermost side, the intermediate probe diameter A2 is the gap C2-(0.6 to 1) mm between the intermediate coil terminals, and the outermost probe diameter A3 is the gap C3-(0.6 to 1) mm between the coil terminals on the outermost side. Of course, the trapezoidal shape of the radial probe 4-1 is C1 <C2<C3なので、A1<A2<A3となる。

[0050] Fig. 12 is a detailed side view showing another embodiment of the circumferential unit 3, and Fig. 13 is a detailed side view showing the relieving state of the other embodiment of the circumferential unit 3. The difference from Fig. 6 is that the lower ends of the circumferential probes 3-1 and 3-2 extend horizontally from the gap B between the coil terminals to the fulcrum 3-5, and the opposite side of the fulcrums 3-5 and 3-6. The positions of the proximity switches 3-3 and 3-4 are set in a horizontal position from the fulcrums 3-5 and 3-6.

[0051] As a result, the proximity SW3-3, 3-4 also function as a means for detecting the displacement of the fulcrum plate 3-12. Therefore, the relieving state can be detected even if the second proximity SW3-13 is omitted. The movement of the relieving state in FIG. 13 is caused by the detection point 3-14 of the circumferential probes 3-1, 3-2 being removed from the proximity SW3-3, 3-4. When the circumferential probes 3-1, 3-2 come into contact with the coil terminal 6-6, they rotate around the fulcrum 3-5, and the detection point 3-14 is removed from the proximity SW3-3, 3-4, which is detected. [Explanation of symbols]

[0052] 1. Rotating table 2...Rotary base motor 2-1…Belt 3...Circumferential unit 3-1, 3-2...Circumferential probe 3-3, 3-4, 4-2...Melee SW 3-5, 3-6…Fulcrum 3-15, 4-4…Air cylinder 3-7…Linear motion guide 3-8…Second Linear Motion Guide 3-9…Spring 3-10…Guide table 3-11…Probe base 3-12…Support plate 3-13…Second melee SW 3-14…Detection point 4...Radial unit 4-1…Radial probe 4-3…Fulcrum 6…Stator 6-1…Stator core 6-2…Stator coil 6-3…Inner peripheral surface 6-4…Slot 6-5…Coil transition section 6-6…Coil terminal 6-7…Reference position A, A1, A2, A3...Probe diameter B, C1, C2, C3... Coil terminal gap

Claims

1. In a stator coil terminal posture inspection device for inspecting the posture of a coil terminal of a coil wound around a stator core of a stator constituting a motor, an inspection probe for inspecting the attitude of the coil terminal; a control device that moves the inspection probe at least in a radial direction of the stator coil and passes the inspection probe through a gap between adjacent coil terminals, and detects whether or not the inspection probe is in contact with the coil terminals; A stator coil terminal posture inspection device comprising:

2. 2. The stator coil terminal posture inspection device according to claim 1, wherein the presence or absence of contact between the inspection probe and the coil terminal is detected by detecting the displacement of the inspection probe using a proximity switch provided near the inspection probe.

3. 3. The posture inspection device for a stator coil terminal according to claim 1, further comprising a radial unit to which a radial probe is attached as the inspection probe and which is movable in the up, down, left and right directions.

4. A method for inspecting the posture of a coil terminal of a coil wound around a stator core of a stator constituting a motor, comprising: A method for inspecting the posture of a stator coil terminal, comprising: moving an inspection probe for inspecting the posture of the coil terminal at least in the radial direction of the stator coil, passing it through a gap between adjacent coil terminals, and detecting whether or not the inspection probe is in contact with the coil terminal.

5. The method for inspecting the posture of a stator coil terminal as described in claim 4, characterized in that the inspection probe for performing the radial inspection is provided with a radial unit to which a radial probe is attached, and the presence or absence of contact between the radial probe and the coil terminal in the radial direction is detected.

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