A contact resistance testing device

Abstract

This utility model discloses a contact resistance testing device, comprising: a tooling platform, a clamping and pressure testing mechanism, and a resistance testing mechanism. A product placement rack is provided above the tooling platform, and the product placement rack has at least one product placement position. The clamping and pressure testing mechanism is located on the tooling platform and cooperates with the product placement rack. The contact resistance testing device of this utility model clamps the connection between two products using the clamping and pressure testing mechanism, simulating the clamping process during assembly at the customer's location. This allows for the simulation of the contact resistance after assembly, enabling timely detection of problems. Once a problem is detected, it can be addressed promptly, avoiding significant screening costs at the customer's location.

Description

Technical Field

[0001] This utility model belongs to the field of manufacturing, and specifically relates to a contact resistance testing device. Background Technology

[0002] Electronic components are typically tested for contact resistance after manufacturing. Existing testing methods mostly involve measuring the contact resistance of individual products. However, after the products are assembled at the customer's site, their contact resistance will differ from the measured value of the individual products. This requires the customer to conduct retesting after assembly to reject products that do not meet the requirements. This not only increases the workload of testing but also increases testing costs. At the same time, handling non-compliant products is also quite troublesome. This problem urgently needs to be solved. Utility Model Content

[0003] Purpose of the utility model: In order to overcome the above shortcomings, the purpose of this utility model is to provide a contact resistance testing device, which uses a pressure testing mechanism to press the connection between two products, simulating the pressing process during assembly at the customer's site, thereby simulating the contact resistance after assembly and enabling timely detection of problems.

[0004] Technical solution: To achieve the above objectives, this utility model provides a contact resistance testing device, comprising:

[0005] A tooling machine, wherein a product placement rack is provided above the tooling machine, and the product placement rack is provided with at least one product placement position;

[0006] A pressure testing mechanism is mounted on a tooling machine and cooperates with a product placement rack.

[0007] The resistance testing mechanism is mounted on a tooling machine and cooperates with a product placement rack. This utility model discloses a contact resistance testing device that uses a clamping and testing mechanism to press the connection between two products, simulating the clamping process during assembly at the customer's site. This allows for the simulation of the contact resistance after assembly, enabling timely detection and handling of problems, avoiding significant screening costs at the customer's site, and better meeting customer needs.

[0008] The pressing and pressure measuring mechanism includes a first mounting plate, a pressing drive mechanism, a pressure plate, a pressing rod, and a pressure and force measuring mechanism. The first mounting plate is located above the tooling platform and connected by a set of guide columns. The pressing drive mechanism is located above the first mounting plate, and the pressure plate is located below the first mounting plate and connected to the guide columns by a set of bushings. The output end of the pressing drive mechanism is connected to the pressure plate via the pressing drive plate. The pressure and force measuring mechanism is located below the pressure plate, and the pressing rod is located on the pressure and force measuring mechanism. During operation, the pressing drive mechanism drives the pressing drive plate to move the pressure plate and the pressing rod downwards. The pressing rod presses the connection between the two products, and the pressure and force measuring mechanism detects the pressure applied by the pressing drive mechanism.

[0009] Furthermore, the pressure and force measuring mechanism includes a lower pressure plate, a pressure sensor, a set of combined springs, and a set of guide pillars. The lower pressure plate is located below the pressure plate and connected by a set of guide pillars. The lower pressure plate is connected to the lower pressure drive plate via a set of combined springs, and the pressure sensor is located on the lower pressure plate. The pressure sensor is configured to detect the pressure applied by the lower pressure drive mechanism.

[0010] In addition, it also includes a first test piece, which is located below the pressure plate and on one side of the clamping rod.

[0011] Preferably, the resistance testing mechanism includes a test drive cylinder and a second test piece, wherein the test drive cylinder is fixed on the tooling machine base and the second test piece is disposed at the output end of the test drive cylinder.

[0012] More preferably, both the first and second test pieces are L-shaped, and each has an inclined surface at its end closest to the product. The inclined surface facilitates smooth entry into the designated position on the product.

[0013] Preferably, both the first and second test pieces are provided with holes for connecting contact points for measuring contact resistance, and the holes contain contact points for measuring contact resistance. During operation, the pressing drive mechanism and the test drive cylinder respectively drive the first and second test pieces to move into the gap of the product, performing resistance testing on the product through the contact points.

[0014] In addition, the product placement rack includes a first placement rack and a second placement rack. The first placement rack has a first placement cavity and a latch on one side of the first placement cavity. The second placement rack is located above the first placement rack and cooperates with the latch. The second placement rack has a second placement cavity. The first placement cavity has an opening on one side of the test piece.

[0015] Preferably, the outer sides of the first and second placement racks are equipped with sensors for detecting whether there are products in the first and second placement cavities. The sensors enable timely detection of whether there are products in the placement cavities.

[0016] As can be seen from the above technical solution, this utility model has the following beneficial effects:

[0017] 1. The contact resistance testing device described in this utility model presses the connection between two products through a pressing and measuring mechanism, simulating the pressing process during assembly at the customer's site. This allows for the simulation of the contact resistance after assembly, enabling timely detection of problems. Once a problem is detected, it can be addressed promptly, avoiding significant screening costs at the customer's site and better meeting their needs.

[0018] 2. In the pressure testing mechanism, the pressure drive mechanism drives the pressure drive plate to move the pressure plate and the pressure rod downward. The pressure rod presses the connection between the two products. The pressure and force measuring mechanism detects the pressure applied by the pressure drive mechanism. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the contact resistance testing device described in this utility model;

[0020] Figure 2 This is a partial schematic diagram of the pressure and force measuring mechanism in this utility model;

[0021] Figure 3 This is a partial schematic diagram of the placement rack in this utility model;

[0022] In the diagram: 1. Tooling machine; 2. Product placement rack; 3. Pressing and pressure testing mechanism; 4. Resistance testing mechanism;

[0023] First placement frame 21, second placement frame 22, latch 23, sensor 24, first mounting plate 31, pressing drive mechanism 32, pressure plate 33, clamping rod 34, pressure and force measuring mechanism 35, pressing drive plate 36, first test piece 37, pressing plate 351, pressure sensor 352, combined spring 353, guide post 354, test drive cylinder 41, second test piece 42. Detailed Implementation

[0024] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments.

[0025] Example 1

[0026] like Figures 1 to 3The contact resistance testing device shown includes: a tooling platform 1, a pressure testing mechanism 3, and a resistance testing mechanism 4. A product placement rack 2 is provided above the tooling platform 1, and the product placement rack 2 has at least one product placement position. The pressure testing mechanism 3 is located on the tooling platform 1 and cooperates with the product placement rack 2. The resistance testing mechanism 4 is located on the tooling platform 1 and cooperates with the product placement rack 2.

[0027] The pressure testing mechanism 3 includes a first mounting plate 31, a downward driving mechanism 32, a pressure plate 33, a pressure rod 34, and a pressure and force measuring mechanism 35. The first mounting plate 31 is located above the tooling platform 1 and is connected by a set of guide columns. The downward driving mechanism 32 is located above the first mounting plate 31. The pressure plate 33 is located below the first mounting plate 31 and is connected to the guide columns by a set of bushings. The output end of the downward driving mechanism 32 is connected to the pressure plate 33 through a downward driving plate 36. The pressure and force measuring mechanism 35 is located below the pressure plate 33, and the pressure rod 34 is located on the pressure and force measuring mechanism 35. It also includes a first test piece 37, which is located below the pressure plate 33 and on one side of the pressure rod 34. During operation, the pressure drive mechanism 32 drives the pressure drive plate 36 to move the pressure plate 33 and the clamping rod 34 downward. The clamping rod 34 presses the connection between the two products. The pressure and force measuring mechanism 35 detects the pressure applied by the pressure drive mechanism 35. The contact point on the first test piece 37 tests the resistance of the product.

[0028] like Figure 2 The pressure and force measuring mechanism 35 shown includes a lower pressure plate 351, a pressure sensor 352, a set of combined springs 353 and a set of guide posts 354. The lower pressure plate 351 is located below the pressure plate 33 and is connected by a set of guide posts 354. The lower pressure plate 351 is connected to the lower pressure drive plate 36 by a set of combined springs 353. The pressure sensor 352 is located on the lower pressure plate 351.

[0029] like Figure 1 The resistance testing mechanism 4 shown includes a test drive cylinder 41 and a second test piece 42. The test drive cylinder 41 is fixed on the tooling base 1, and the second test piece 42 is located at the output end of the test drive cylinder 41.

[0030] Both the first test piece 37 and the second test piece 42 are L-shaped, and their ends near the product have an inclined surface. Both the first test piece 37 and the second test piece 42 have holes for connecting to the contact points used for measuring contact resistance, and the holes contain contact points for measuring contact resistance.

[0031] like Figure 3The product placement rack 2 shown includes a first placement rack 21 and a second placement rack 22. The first placement rack 21 is provided with a first placement cavity, and a latch 23 is provided on one side of the first placement cavity. The second placement rack 22 is located above the first placement rack 21 and cooperates with the latch 23. The second placement rack 22 is provided with a second placement cavity. The first placement cavity has an opening on one side of the test piece 42.

[0032] The outer sides of the first placement rack 21 and the second placement rack 22 are equipped with sensors 24 for detecting whether there are products in the first placement cavity and the second placement cavity.

[0033] Example 2

[0034] The contact resistance testing device described in this embodiment has the same structure as that in Embodiment 1. In addition, it includes a timer for controlling the pressing and testing mechanism 3 and the testing time, and a pressure gauge for determining the pressure of the pressing and testing mechanism 3 used to simulate the assembly process. The timer, pressure gauge, and related control buttons are all located at the lower part of the tooling base 1.

[0035] In addition, the tooling platform 1 is provided with a protective plate on its outer side, and a safety light curtain is provided on the protective plate located on the side of the loading port.

[0036] The working principle of the contact resistance testing device described in this embodiment is as follows: Adjust the timer reference value to 4-8s, set the pressure gauge according to the needs of the test product, connect the tester to the fixture, place the product to be tested into the placement cavity of the first placement rack 21 and the second placement rack 22 respectively, push the locking buckle 23 to fix the product, and then press the control key to perform the test.

[0037] The downward driving mechanism 32 drives the downward driving plate 36 to move the pressure plate 33 and the clamping rod 34 downward. The clamping rod 34 presses the connection between the two products. The pressure and force measuring mechanism 35 detects the pressure applied by the downward driving mechanism 35. The contact point on the first test piece 37 tests the resistance of the product.

[0038] At the same time, the test drive cylinder 41 drives the second test piece 42 to move into the product and perform the test through the corresponding contact point.

[0039] It should be noted that the duration of the timer can be adjusted according to the actual required duration of the detection.

[0040] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements can be made without departing from the principle of the present utility model, and these improvements should also be considered within the protection scope of the present utility model.

Claims

1. A contact resistance testing device, characterized in that: include: Tooling machine (1), above which is provided a product placement rack (2), and the product placement rack (2) is provided with at least one product placement position; A pressure testing mechanism (3) is provided on the tooling machine base (1) and cooperates with the product placement rack (2); Resistance testing mechanism (4) is set on tooling machine (1) and cooperates with product placement rack (2).

2. The contact resistance testing device according to claim 1, characterized in that: The pressing and measuring mechanism (3) includes a first mounting plate (31), a pressing drive mechanism (32), a pressure plate (33), a pressing rod (34), and a pressure and force measuring mechanism (35). The first mounting plate (31) is located above the tooling table (1) and is connected by a set of guide columns. The pressing drive mechanism (32) is located above the first mounting plate (31). The pressure plate (33) is located below the first mounting plate (31) and is connected to the guide columns by a set of bushings. The output end of the pressing drive mechanism (32) is connected to the pressure plate (33) through the pressing drive plate (36). The pressure and force measuring mechanism (35) is located below the pressure plate (33). The pressing rod (34) is located on the pressure and force measuring mechanism (35).

3. The contact resistance testing device according to claim 2, characterized in that: The pressure and force measuring mechanism (35) includes a lower pressure plate (351), a pressure sensor (352), a set of combined springs (353) and a set of guide posts (354). The lower pressure plate (351) is located below the pressure plate (33) and is connected by a set of guide posts (354). The lower pressure plate (351) is connected to the lower pressure drive plate (36) by a set of combined springs (353). The pressure sensor (352) is located on the lower pressure plate (351).

4. The contact resistance testing device according to claim 3, characterized in that: It also includes a first test piece (37), which is located below the pressure plate (33) and on one side of the clamping rod (34).

5. The contact resistance testing device according to claim 4, characterized in that: The resistance testing mechanism (4) includes a test drive cylinder (41) and a second test piece (42). The test drive cylinder (41) is fixed on the tooling table (1), and the second test piece (42) is located at the output end of the test drive cylinder (41).

6. The contact resistance testing device according to claim 5, characterized in that: Both the first test piece (37) and the second test piece (42) are L-shaped, and the end of each piece near the product has an inclined surface.

7. The contact resistance testing device according to claim 6, characterized in that: Both the first test piece (37) and the second test piece (42) are provided with holes for connecting the contact points for measuring contact resistance, and the holes are provided with contact points for measuring contact resistance.

8. The contact resistance testing device according to claim 1, characterized in that: The product placement rack (2) includes a first placement rack (21) and a second placement rack (22). The first placement rack (21) is provided with a first placement cavity. A latch (23) is provided on one side of the first placement cavity on the first placement rack (21). The second placement rack (22) is located above the first placement rack (21) and cooperates with the latch (23). The second placement rack (22) is provided with a second placement cavity. The first placement cavity is provided with an opening on one side of the test piece (42).

9. The contact resistance testing device according to claim 8, characterized in that: The outer sides of the first placement rack (21) and the second placement rack (22) are equipped with sensors (24) for detecting whether there are products in the first placement cavity and the second placement cavity.

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