Testing instrument for the position accuracy of the long pin of the motor terminal block support assembly

Abstract

This utility model relates to a testing instrument for the position accuracy of a long pin in a motor terminal block support assembly, belonging to the field of motor component testing technology. It includes a base, a guide post mounted on the base, a fixture block that cooperates with and slides along the guide post, a positioning structure for positioning the product, an electrical box, and conductive components forming a testing circuit. The fixture block contacts the long pin insert of the product via the inner wall of its upper groove. An electrical signal forms a conductive loop through the fixture block, guide post, support plate, wire, electrical box, wire, floating probe, and long pin insert. The product's pass / fail status is visually determined by a buzzer and indicator light, avoiding human error and improving testing efficiency. The fixture block uses linear bearings to ensure smooth movement, further improving testing efficiency. The floating probe ensures the stability of the circuit connection and improves testing accuracy.

Description

Technical Field

[0001] This utility model relates to the field of motor component testing technology, specifically to a testing instrument for the position accuracy of the long pin of a motor terminal block support assembly. Background Technology

[0002] Motor terminal block support assemblies play a crucial role in supporting and fixing motors, providing insulation and isolation, and positioning electrical connections during motor operation. As internal space in motors becomes increasingly limited, the spacing between the insert layers in the terminal block support assembly gradually decreases. Furthermore, the U / V / W phase pins, which need to pass through the motor housing, require extremely high positional accuracy, typically needing to meet a positional accuracy requirement of 0.6.

[0003] Existing methods for detecting the position of long pins have significant drawbacks: First, automated line CCD detection is prone to errors due to the need for zooming and the fact that the reference points are not at the same height, leading to frequent alarms during production; second, ordinary inspection tools rely on visual identification, which is prone to misjudgment and incorrect judgment, resulting in low detection efficiency. Utility Model Content

[0004] This utility model aims to solve the problems of inaccurate, inefficient, and misjudgment-prone detection of the long pin position of existing motor terminal block support components, and provides a detection tool that is accurate, easy to operate, and efficient in judgment.

[0005] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows:

[0006] A testing instrument for the position of a long pin of a motor terminal block support assembly includes a base, a guide post disposed on the base, a testing block that cooperates with the guide post and can slide along it, a positioning structure for positioning the product, an electrical box, and conductive components forming a testing circuit.

[0007] The positioning structure includes a positioning pin fixed on the base and a pressure block for pressing the product against the positioning pin support surface;

[0008] The inspection block is provided with a positional inspection square groove corresponding to the long PIN of the insert, and the inspection block can slide to a preset inspection height;

[0009] The conductive components include a power supply, a buzzer, and an indicator light inside the electrical box, as well as a gauge block, a guide post, a support plate, the electrical box, and a floating probe connected in sequence. When the position of the insert long PIN is not up to standard, the insert long PIN contacts the inner wall of the position inspection slot of the gauge block, causing the detection circuit to conduct, the buzzer to sound an alarm, and the indicator light to illuminate.

[0010] Preferably, the electrical box is electrically connected to the support plate and the floating probe respectively via wires.

[0011] Preferably, the inspection block is provided with a linear bearing, which cooperates with the guide post to allow the inspection block to slide smoothly along the guide post.

[0012] Preferably, the guide post is provided with a guide post fixing limit block that limits the detection height of the inspection tool block.

[0013] Preferably, the base is provided with a bakelite base plate for achieving insulation.

[0014] Preferably, the support plate is disposed on the bakelite base plate, the guide post is fixed on the support plate, and the support plate is electrically connected to the guide post.

[0015] Preferably, the power supply in the electrical box powers the buzzer and indicator light. When the detection circuit is activated, the buzzer emits an alarm sound and the indicator light illuminates.

[0016] With the above structure, this utility model has the following advantages:

[0017] The electrical signal forms a conductive loop through the gauge block, guide post, support plate, wire, electrical box, wire, floating probe, and long pin insert. The product's pass / fail status is then visually determined by a buzzer and indicator light, avoiding human error and improving testing efficiency. The gauge block uses linear bearings to ensure smooth movement, further improving testing efficiency. The floating probe ensures the stability of the circuit connection and improves testing accuracy.

[0018] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present invention will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the conductivity of the insert of this utility model;

[0022] Figure 3 This is a schematic diagram of the structure of the inspection block of this utility model;

[0023] Figure 4 This is a schematic diagram of the installation of the insert of this utility model.

[0024] As shown in the figure: 1. Inspection block; 2. Guide post fixing limit block; 3. Electrical box; 4. Base; 5. Guide post; 6. Pressure block; 7. Positioning pin; 8. Floating probe; 9. Support plate; 10. Linear bearing; 11. Bakelite base plate; 12. Position accuracy inspection square groove. Detailed Implementation

[0025] The embodiments of this application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0026] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0027] The present invention will now be described in further detail in conjunction with the full text.

[0028] Combined with appendix Figures 1-4 A detector for the position of a long pin of a motor terminal block support assembly includes a base 4, a guide post 5 disposed on the base 4, a detector block 1 that cooperates with and slides along the guide post 5, a positioning structure for positioning the product, an electrical box 3, and conductive components forming the detection circuit.

[0029] The positioning structure includes a positioning pin 7 fixed on the base 4 and a pressure block 6 for pressing the product against the support surface of the positioning pin 7;

[0030] The inspection block 1 is provided with a position inspection square groove 12 corresponding to the long PIN of the insert, and the inspection block 1 can slide to a preset inspection height;

[0031] The conductive components include the power supply, buzzer and indicator light in the electrical box 3, as well as the inspection block 1, guide post 5, support plate 9, electrical box 3 and floating probe 8 connected in sequence. When the position of the insert long PIN is not qualified, the contact circuit between the insert long PIN and the inner wall of the position inspection slot 12 of the inspection block 1 is connected, the buzzer alarms and the indicator light lights up.

[0032] In practical application, the electrical box 3 is electrically connected to the support plate 9 and the floating probe 8 via wires. The floating probe 8 achieves the effect of floating up and down through a spring.

[0033] The inspection block 1 is equipped with a linear bearing 10, which cooperates with the guide post 5 to allow the inspection block 1 to slide smoothly along the guide post 5.

[0034] The guide post 5 is equipped with a guide post fixing limit block 2 that limits the detection height of the inspection block 1. The inspection block 1 is made of conductive material, and the position of the positional inspection square groove corresponds to the preset qualified position of the product long PIN.

[0035] The base 4 is provided with a bakelite base plate 11 for achieving insulation.

[0036] The support plate 9 is set on the bakelite base plate 11, the guide post 5 is fixed on the support plate 9, and the support plate 9 and the guide post 5 are electrically connected.

[0037] In a specific implementation of this invention, the electrical box 3 can convert 220V AC power to 12V DC power. The power supply inside the electrical box 3 powers the buzzer and indicator light. When the detection circuit is on, when the product's long PIN contacts the inner wall of the position inspection slot of the gauge block 1, the electrical signal is transmitted sequentially through the gauge block 1, guide post 5, support plate 9, wire, electrical box 3, wire, and floating probe 8 to the product's long PIN insert, forming a closed loop. The buzzer sounds an alarm and the indicator light illuminates.

[0038] This invention relates to a long pin position gauge for motor terminal block support assemblies. The gauge is primarily used for measuring the position of the long pins in motor terminal block support assemblies. This invention is small in size, has few parts, high safety, simple operation, high inspection efficiency, and high accuracy in position measurement, thus reducing product costs.

[0039] To ensure smooth movement of the inspection block, this invention incorporates a linear bearing in its structural design. This reduces the contact area between the inspection block and the guide post, ensuring smooth movement. Furthermore, to accurately and efficiently identify defective products and avoid manual inspection, the invention innovatively adds a conductive circuit. During product inspection, if the long pin of the motor terminal block support assembly is not in the correct position, it will contact the inner wall of the groove on the upper part of the inspection block. When this occurs, a circuit is formed through the product insert, probe, wire, electrical box, wire, support plate, guide post, inspection block, and insert. A buzzer and indicator light are connected to this circuit. When the circuit is active, the buzzer sounds and the indicator light illuminates. The presence or absence of the buzzer and indicator light indicates whether the long pin's position is correct.

[0040] Specifically, the buzzer and indicator light achieve a switching effect by contacting or not contacting the product's long pin and the inner wall of the slot above the gauge block.

[0041] The working principle of this utility model:

[0042] When the product needs to be positionally tested, first remove the fixture block and pressure block from the fixture. Then, fix the product onto the positioning pin according to its orientation. After the product is placed, press the pressure block onto the product's reference surface, ensuring that the bottom surface of the product is completely in contact with the support surface of the positioning pin, so that the position of all the product's long pins is consistent within the fixture. After the product is fixed, place the fixture block onto the guide post. Due to the linear bearing on the fixture block, it slides smoothly to the guide post's fixing limit block, which is the product's long pin positional testing height. When the product's long pin position is qualified, the three long pins of the product do not contact the square slot of the fixture block, and the circuit is not connected, failing to form a loop. When the product's long pin position is unqualified, the inner wall of the slot above the fixture block contacts the product's long pin insert. The electrical signal forms a conductive loop through the fixture block-guide post-support plate-wire-electrical box-wire-floating probe-long pin insert. After the circuit is connected, the buzzer on the electrical box sounds an alarm, and the indicator light flashes simultaneously. Inspectors determine whether a product is qualified by listening to the buzzer sound and the indicator light.

[0043] The present invention and its embodiments have been described above. This description is not restrictive, and the embodiments shown throughout the text are only one of the embodiments of the present invention. The actual structure is not limited to this. In conclusion, if a person skilled in the art is inspired by this description and designs a similar structure and embodiment without departing from the inventive spirit of the present invention, such design should fall within the protection scope of the present invention.

Claims

1. A testing instrument for the position accuracy of a long pin in a motor terminal block support assembly, characterized in that, Includes a base (4), a guide post (5) disposed on the base (4), a gauge block (1) that cooperates with the guide post (5) and can slide along it, a positioning structure for positioning the product, an electrical box (3), and conductive components forming a detection circuit; The positioning structure includes a positioning pin (7) fixed on the base (4) and a pressure block (6) for pressing the product against the support surface of the positioning pin (7); The inspection block (1) is provided with a position inspection square groove (12) corresponding to the long PIN of the insert, and the inspection block (1) can slide to a preset inspection height; The conductive components include a power supply, a buzzer and an indicator light in the electrical box (3), and a gauge block (1), a guide post (5), a support plate (9), the electrical box (3) and a floating probe (8) connected in sequence. When the position of the insert long PIN is not qualified, the contact circuit between the insert long PIN and the inner wall of the position inspection slot (12) of the gauge block (1) is connected, the buzzer alarms and the indicator light lights up.

2. The instrument for detecting the position accuracy of the long pin of the motor terminal block support assembly according to claim 1, characterized in that: The electrical box (3) is electrically connected to the support plate (9) and the floating probe (8) respectively via wires.

3. The instrument for detecting the position accuracy of the long pin of the motor terminal block support assembly according to claim 1, characterized in that: The inspection block (1) is provided with a linear bearing (10), which cooperates with the guide post (5) to allow the inspection block (1) to slide smoothly along the guide post (5).

4. The instrument for detecting the position accuracy of the long pin of the motor terminal block support assembly according to claim 1, characterized in that: The guide post (5) is provided with a guide post fixing limit block (2) that limits the detection height of the inspection tool block (1).

5. The instrument for detecting the position accuracy of the long pin of the motor terminal block support assembly according to claim 1, characterized in that: The base (4) is provided with a bakelite base plate (11) for achieving insulation.

6. The instrument for detecting the position accuracy of the long pin of the motor terminal block support assembly according to claim 1, characterized in that: The support plate (9) is set on the bakelite base plate (11), the guide post (5) is fixed on the support plate (9), and the support plate (9) and the guide post (5) are electrically connected.

7. The instrument for detecting the position accuracy of the long pin of the motor terminal block support assembly according to claim 1, characterized in that: The power supply in the electrical box (3) powers the buzzer and indicator light. When the detection circuit is turned on, the buzzer emits an alarm sound and the indicator light lights up.

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