Contact resistance test equipment for temperature controller contact
By designing a contact resistance testing device that includes a tensile gauge device and adjustable pressure, the problems of low accuracy of contact resistance testing in the prior art and inability to dynamically test are solved, and efficient and accurate contact contact resistance testing is achieved, reducing waste rate and production costs.
Patent Information
- Application Number
- CN202421091494.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-17
- Publication Date
- 2025-03-28
- Estimated Expiration
- 2034-05-17
AI Technical Summary
The existing contact resistance testing methods are difficult to effectively test the contact resistance of the thermostat contacts, and the test accuracy is low, so the pressure changes cannot be tested dynamically, resulting in high waste rate and increased production costs.
A contact resistance testing device including a base plate, a support stand, a tension gauge device, a vertical lifting device, a movable probe and a fixed probe are designed. Through this device, contacts can be clamped and pressure can be gradually increased, contact resistance can be tested dynamically, and test accuracy can be improved.
The equipment can detect unqualified contacts in advance, reduce waste rate, improve testing efficiency and accuracy, simplify testing methods, and reduce production costs.
Smart Images
Figure CN222689839U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of temperature controller production equipment, in particular to a contact resistance testing device for temperature controller contacts. Background Art
[0002] At present, contacts are widely used in products with contact conductive functions such as thermostats. Contacts can improve the contact effect of conductive parts. In order to test their performance during the production process, it is necessary to test the contact resistance of the contacts. In the traditional contact resistance test method, the contacts are usually riveted to the terminal pieces of the thermostat products, and then the contact resistance of the products or contacts is tested. This method is easy to fix and position the products, but when the contacts are tested to be unqualified, the entire terminal piece or the entire thermostat product will be scrapped, thereby increasing the scrap rate of the product, causing waste of other spare parts, and indirectly increasing the production cost. The test efficiency is low, and the test method cannot perform dynamic tests on the contact resistance of the contacts due to pressure changes. The test accuracy is low and cannot meet the current production needs. Therefore, it is necessary to propose a new test equipment for selection. Summary of the invention
[0003] The utility model aims to provide a contact resistance testing device for temperature controller contacts which has a simple and reasonable structure, is easy to install and has a stable structure.
[0004] A contact resistance testing device for temperature controller contacts, including a base plate, a support stand connected to the base plate, a dynamometer device and a vertical lifting device for driving the dynamometer device to move up and down are arranged on the support stand, a force rod is arranged at the bottom of the dynamometer device, a movable probe is connected to the force rod, a fixed probe placed below the movable probe is also connected to the base plate, a detection station for clamping contacts is formed between the fixed probe and the movable probe; and a resistance testing device is also included, the resistance testing device is electrically connected to the movable probe and the fixed probe respectively, and after the movable probe and the fixed probe clamp the contacts, the resistance testing device establishes a test circuit.
[0005] The purpose of the utility model can also be solved by the following technical measures:
[0006] As a more specific solution, it also includes an adjustment seat, which is adjustably connected to the bottom plate, and a fixing rod is adjustably connected to the adjustment seat, and the fixed probe is connected to the upper end of the fixing rod.
[0007] As a further solution, the top end of the fixed probe is provided with a lower positioning groove for positioning the lower part of the contact, or the bottom end of the movable probe is provided with an upper positioning groove for positioning the upper part of the contact.
[0008] As a further solution, the dynamometer device is provided with a display screen and control buttons.
[0009] As a further solution, the vertical lifting device includes a plurality of guide shafts, a slider and a power device, the plurality of guide shafts are connected to the supporting frame along the height direction, the slider is linearly slidably connected to the guide shaft, the dynamometer device is fixedly connected to the slider, and the power device is connected to the supporting frame and is transmission-connected to the slider.
[0010] As a further solution, the power device includes a handwheel and a threaded shaft, the threaded shaft is rotatably connected to the upper part of the supporting frame, the handwheel is fixed to the upper part of the threaded shaft, and the lower part of the threaded shaft is fixedly connected to the slider.
[0011] As a further solution, a boss is provided in the middle of the adjustment seat, an assembly hole is provided on the top surface of the boss, the lower end of the fixing rod is vertically inserted in the assembly hole, and a fastening hole passing through the assembly hole is provided on the side of the boss, and a bolt or screw that presses the fixing rod is connected in the fastening hole.
[0012] As a further solution, long strip-shaped adjustment holes are opened on the left and right sides of the adjustment seat, and the adjustment holes are extended along the front and rear directions of the adjustment seat. The base plate is opened with connecting holes corresponding to the adjustment holes. The fastening unit passes through the adjustment holes and the connecting holes to make the adjustment seat assembled and connected to the base plate.
[0013] As a further solution, the movable probe and the fixed probe are in a conical structure, and the tips of the movable probe and the fixed probe are arranged opposite to each other.
[0014] As a further solution, the resistance testing device is a DC resistance tester.
[0015] The beneficial effects of the utility model are as follows:
[0016] The utility model discloses a contact resistance testing device for temperature controller contacts. Through the device, the contact resistance test can be performed on the contacts before assembly, unqualified products can be found in advance, and the problem of increased scrap rate caused by testing after the contacts are assembled can be avoided. In addition, the movable probe is fixed on the force-bearing rod of the tension gauge device, and the pressure applied to the contact by the movable probe can be gradually increased. The contact is dynamically tested according to the pressure prompted by the tension gauge device, thereby improving the test accuracy. The test method is simple and efficient. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a schematic structural diagram of an embodiment of the utility model.
[0018] Figure 2 It is a schematic diagram of the vertical lifting device and its partially enlarged structure in the utility model.
[0019] Figure 3 It is a schematic diagram of the exploded structure of the adjustment seat and the fixing rod in the utility model. DETAILED DESCRIPTION
[0020] The utility model is further described below in conjunction with the accompanying drawings and embodiments.
[0021] like Figures 1 to 3 As shown, a contact resistance testing device for temperature controller contacts includes a base plate 1, a supporting stand 2 is connected to the base plate 1, a dynamometer device 3 and a vertical lifting device 4 for driving the dynamometer device 3 to move up and down are arranged on the supporting stand 2, a force rod 31 is arranged at the bottom of the dynamometer device 3, a movable probe 5 is connected to the force rod 31, a fixed probe 6 placed below the movable probe 5 is also connected to the base plate 1, a detection station for clamping contacts is formed between the fixed probe 6 and the movable probe 5; and a resistance testing device 7 is also included, the resistance testing device 7 is a DC resistance tester, the movable probe 5 and the fixed probe 6 are made of metal material, the resistance testing device 7 is electrically connected to the movable probe 5 and the fixed probe 6 respectively, and after the movable probe 5 and the fixed probe 6 clamp the contact, the resistance testing device 7 establishes a test circuit.
[0022] The device can be used to test the contact resistance of the contacts before assembly, so as to find unqualified products early and avoid the problem of increased scrap rate caused by testing after the contacts are assembled. In addition, the movable probe 5 is fixed on the force-bearing rod 31 of the tension gauge device 3, so that the pressure applied to the contact by the movable probe 5 can be gradually increased, and the contact can be dynamically tested according to the pressure prompted by the tension gauge device 3, thereby improving the test accuracy. The test method is simple and efficient.
[0023] It also includes an adjustment seat 8, which is adjustably connected to the base plate 1, and a fixing rod 9 is adjustably connected to the adjustment seat 8, and the fixed probe 6 is connected to the upper end of the fixing rod 9; the front and rear position and the up and down position of the fixed probe 6 can be fine-tuned through the adjustment seat 8 and the fixing rod 9.
[0024] The top of the fixed probe 6 is provided with a lower positioning groove 61 for positioning the lower part of the contact. The lower positioning groove 61 allows workers to place the contact on the fixed probe 6 more quickly. The bottom of the movable probe 5 is provided with an upper positioning groove 51 for positioning the upper part of the contact. The upper positioning groove 51 and the lower positioning groove 61 position the contact up and down to prevent the contact from popping out due to pressure during testing.
[0025] The dynamometer device 3 is provided with a display screen 33 and a control button 32; the force value of the dynamometer device 3 can be directly observed through the display screen 33, and the data of the dynamometer device 3 can be adjusted through the control button 32.
[0026] The vertical lifting device 4 includes a plurality of guide shafts 41, a slider 42 and a power device. The plurality of guide shafts 41 are connected to the supporting frame 2 along the height direction, the slider 42 is linearly slidably connected to the guide shaft 41, the dynamometer device 3 is fixedly connected to the slider 42, and the power device is connected to the supporting frame 2 and is transmission-connected to the slider 42. The above structure ensures that the dynamometer device 3 and the movable probe 5 move vertically up and down.
[0027] The power device includes a handwheel 43 and a threaded shaft 44. The threaded shaft 44 is rotatably connected to the upper part of the support stand 2. The handwheel 43 is fixed to the upper part of the threaded shaft 44. The lower part of the threaded shaft 44 is fixedly connected to the slider 42. The power device of this structure can realize manual operation. The user can move the threaded shaft 44 up and down by turning the handwheel 43, so that the pressure applied to the contact by the movable probe 5 can be slightly changed, thereby improving the accuracy of the test.
[0028] A boss 81 is provided in the middle of the adjustment seat 8, and an assembly through hole 811 is provided on the top surface of the boss 81. The lower end of the fixing rod 9 is vertically inserted into the assembly through hole 811, and a fastening hole 812 penetrating the assembly through hole 811 is provided on the side of the boss 81. A bolt or screw that presses the fixing rod 9 is connected in the fastening hole 812. When adjusting the position of the fixing rod 9, the bolt or screw is loosened to move the fixing rod 9 up and down in the assembly through hole 811. After adjusting to the desired position, the bolt or screw is tightened again to make the bolt or screw press against the outer wall of the fixing rod 9 to fix its height.
[0029] The left and right sides of the adjustment seat 8 are provided with long strip-shaped adjustment holes 801, and the adjustment holes 801 are extended along the front-to-back direction of the adjustment seat 8. The base plate 1 is provided with connecting holes 101 corresponding to the adjustment holes 801. The adjustment seat 8 is assembled and connected to the base plate 1 by passing the fastening unit through the adjustment holes 801 and the connecting holes 101. When adjusting the position of the adjustment seat 8, the fastening unit of the bolt or screw is loosened to allow the adjustment hole 801 to slide freely relative to the fastening unit. After adjusting to the desired position, the bolt or screw is tightened again to lock the front-to-back position of the adjustment seat 8 with the head of the bolt or screw.
[0030] The movable probe 5 and the fixed probe 6 are conical structures, and the tips of the movable probe 5 and the fixed probe 6 are arranged opposite to each other; this structure makes it easier for the user to place the contact point into the lower positioning groove 61 of the fixed probe 6, thereby improving the detection efficiency.
[0031] The above is a preferred embodiment of the utility model, which shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. The utility model may have various changes and improvements without departing from the spirit and scope of the utility model, and these changes and improvements fall within the scope of the utility model to be protected, and the scope of protection of the utility model is defined by the attached claims and their equivalents.
Claims
1. A contact resistance test device for a thermostat contact, comprising a base plate (1), to which a support stand (2) is connected, characterized in that: The support frame (2) is provided with a tensile gauge device (3) and a vertical lifting device (4) for driving the tensile gauge device (3) to move up and down. The bottom of the tensile gauge device (3) is provided with a force-bearing rod (31), and the force-bearing rod (31) is connected to a movable probe (5). The bottom plate (1) is also connected to a fixed probe (6) placed below the movable probe (5), and a detection station for forming a clamping contact between the fixed probe (6) and the movable probe (5); and also includes a resistance testing device (7), the resistance testing device (7) being electrically connected to the movable probe (5) and the fixed probe (6) respectively, and after the movable probe (5) and the fixed probe (6) clamp the contact, the resistance testing device (7) establishes a test circuit.
2. The contact resistance test device for the thermostat contacts according to claim 1, characterized in that: It also includes an adjustment seat (8), the adjustment seat (8) being adjustably connected to the base plate (1), a fixing rod (9) being adjustably connected to the adjustment seat (8), and the fixed probe (6) being connected to the upper end of the fixing rod (9).
3. A contact resistance test device for thermostat contacts according to claim 1, characterized in that : The top end of the fixed probe (6) is provided with a lower positioning groove (61) for positioning the lower part of the contact, or the bottom end of the movable probe (5) is provided with an upper positioning groove (51) for positioning the upper part of the contact.
4. The contact resistance test device for the thermostat contacts according to claim 1, characterized in that The dynamometer device (3) is provided with a display screen (33) and a control button (32).
5. The contact resistance test device for the thermostat contacts according to claim 1, characterized in that The vertical lifting device (4) comprises a plurality of guide shafts (41), a slider (42) and a power device, wherein the plurality of guide shafts (41) are connected to the support frame (2) along the height direction, the slider (42) is linearly slidably connected to the guide shaft (41), the dynamometer device (3) is fixedly connected to the slider (42), and the power device is connected to the support frame (2) and is transmission-connected to the slider (42).
6. A contact resistance test device for thermostat contacts according to claim 5, characterized in that The power device comprises a hand wheel (43) and a threaded shaft (44), wherein the threaded shaft (44) is rotatably connected to the upper part of the support frame (2), the hand wheel (43) is fixed to the upper part of the threaded shaft (44), and the lower part of the threaded shaft (44) is fixedly connected to the slider (42).
7. The contact resistance test device for the thermostat contacts according to claim 2, characterized in that : A boss (81) is provided in the middle of the adjustment seat (8), a mounting through hole (811) is provided on the top surface of the boss (81), the lower end of the fixing rod (9) is vertically inserted into the mounting through hole (811), and a fastening hole (812) penetrating the mounting through hole (811) is provided on the side surface of the boss (81), and a bolt or screw for pressing the fixing rod (9) is connected in the fastening hole (812).
8. The contact resistance test device for the thermostat contacts according to claim 2, characterized in that The adjusting seat (8) is provided with long strip-shaped adjusting holes (801) on the left and right sides, and the adjusting holes (801) are extended in the front-rear direction of the adjusting seat (8). The bottom plate (1) is provided with connecting holes (101) corresponding to the adjusting holes (801). The adjusting seat (8) is assembled and connected to the bottom plate (1) by passing a fastening unit through the adjusting holes (801) and the connecting holes (101).
9. The contact resistance test device for the thermostat contacts according to claim 1, characterized in that The movable probe (5) and the fixed probe (6) are of conical structure, and the tips of the movable probe (5) and the fixed probe (6) are arranged facing each other.
10. The contact resistance test device for the thermostat contacts according to claim 1, characterized in that : The resistance testing device (7) is a DC resistance tester.