A multi-channel impedance testing device

Abstract

This utility model discloses a multi-channel impedance testing device, including a multimeter housing, clamping plates, fixing blocks, and a buffer plate. The device features two symmetrically mounted fixing plates on the side walls of the multimeter housing. A knob is rotatably connected to the top of the upper fixing plate, and a threaded rod extends from the bottom of the knob. The threaded rod extends between the two fixing plates and connects to the lower fixing plate. Two clamping plates are arranged in opposite directions between the two fixing plates, each with a threaded hole at its top. The threaded rod rotates through this hole. Rotating the knob rotates the threaded rod, and the screw mechanism pushes the two clamping plates closer together, clamping the product. This facilitates clamping the multimeter at the testing point during testing, and allows for easy recording and comparison of test results.

Description

Technical Field

[0001] This utility model relates to the field of impedance testing technology, specifically a multi-channel impedance testing device. Background Technology

[0002] Impedance testing is a routine test for external electronic connectors of aerospace products. It mainly tests the impedance values ​​between the pins of the electronic connector when it is not powered on.

[0003] Most existing impedance tests are performed using multimeters, but multimeters are not convenient to fix on the product surface. When recording experimental results, the multimeter must be held in hand, which is inconvenient for recording and comparison. Utility Model Content

[0004] The purpose of this section is to outline some aspects of the embodiments of this utility model and to briefly introduce some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be used to limit the scope of this utility model.

[0005] In view of the problems existing in the above and / or existing multi-channel impedance testing devices, this utility model is proposed.

[0006] Therefore, the purpose of this utility model is to provide a multi-channel impedance testing device. Two fixing plates are symmetrically installed on the upper and lower sides of the multimeter housing. A knob is rotatably connected to the top of the upper fixing plate, and a threaded rod extends from the bottom of the knob. The threaded rod extends between the two fixing plates and connects to the lower fixing plate. Two clamping plates are arranged in opposite directions between the two fixing plates. Threaded holes are opened on the top of the clamping plates, and the threaded rod rotates through these holes. Rotating the knob drives the threaded rod to rotate, and the screw mechanism pushes the two clamping plates closer together and clamps the product. This facilitates clamping the multimeter at the product's testing point during testing, and makes it convenient to record and compare the test results.

[0007] To solve the above-mentioned technical problems, according to one aspect of the present invention, the present invention provides the following technical solution:

[0008] A multi-channel impedance testing device, comprising:

[0009] The multimeter housing has two fixed plates symmetrically installed on its side wall. A knob is rotatably connected to the top of the upper fixed plate, and a threaded rod is installed at the bottom of the knob, which extends between the two fixed plates.

[0010] The clamping plates are two in number and symmetrically located between the two fixed plates. The top of each clamping plate has a threaded hole, through which the threaded rod rotates.

[0011] In a preferred embodiment of the multi-channel impedance testing device described in this utility model, a guide rod is also installed between the two fixed plates.

[0012] In a preferred embodiment of the multi-channel impedance testing device described in this utility model, a guide hole is provided at the top of the clamping plate, the guide rod passes through the guide hole, and a sliding hole is also provided at the top of the clamping plate.

[0013] In a preferred embodiment of the multi-channel impedance testing device described in this utility model, the outer ring of the knob is provided with a ring of densely packed teeth.

[0014] As a preferred embodiment of the multi-channel impedance testing device of this utility model, it further includes a fixing block, which is installed on the top of the multimeter housing. The fixing block has a sliding groove on its side wall, and a slider is provided inside the sliding groove. The slider has a slot on its side wall, and a first spring connects the slider and the side wall of the sliding groove.

[0015] As a preferred embodiment of the multi-channel impedance testing device described in this utility model, it further includes a buffer plate, a sliding rod installed at the bottom of the buffer plate, the sliding rod passing through the sliding hole, and a second spring connecting the buffer plate and the clamping plate.

[0016] Compared with existing technologies: By symmetrically installing two fixing plates on the upper and lower sides of the multimeter housing, a knob is rotatably connected to the top of the upper fixing plate, and a threaded rod extends from the bottom of the knob. The threaded rod extends between the two fixing plates and connects to the lower fixing plate. Two clamping plates are arranged in opposite directions between the two fixing plates, and threaded holes are opened on the top of the clamping plates. The threaded rod rotates through the threaded hole. By rotating the knob, the threaded rod is rotated, and the screw structure pushes the two clamping plates closer together and clamps the product. This makes it convenient to clamp the multimeter at the product testing point during testing, and facilitates the recording and comparison of test results. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and detailed embodiments. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0018] Figure 1This is an overall structural diagram of a multi-channel impedance testing device according to the present invention;

[0019] Figure 2 This is a partial structural diagram of a multi-channel impedance testing device according to the present invention;

[0020] Figure 3 This is a partial structural diagram of a multi-channel impedance testing device according to the present invention;

[0021] Figure 4 This is a partial structural diagram of a multi-channel impedance testing device according to the present invention. Detailed Implementation

[0022] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0023] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views showing the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, in actual manufacturing, the three-dimensional spatial dimensions of length, width, and depth should be included.

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0025] This invention provides a multi-channel impedance testing device. Two fixed plates are symmetrically installed on the upper and lower sides of the multimeter housing. A knob is rotatably connected to the top of the upper fixed plate, and a threaded rod extends from the bottom of the knob. The threaded rod extends between the two fixed plates and connects to the lower fixed plate. Two clamping plates are arranged in opposite directions between the two fixed plates, each with a threaded hole at its top. The threaded rod rotates through this hole. Rotating the knob drives the threaded rod to rotate, and the screw mechanism pushes the two clamping plates closer together to clamp the product. This facilitates clamping the multimeter at the product's testing point during testing, and allows for easy recording and comparison of test results.

[0026] Figure 1-4 The diagram shown is a structural schematic of one embodiment of the multi-channel impedance testing device of this utility model. Please refer to [link / reference]. Figures 1-4 The multi-channel impedance testing device of this embodiment includes a multimeter housing 100, a clamping plate 200, a fixing block 300, and a buffer plate 400.

[0027] Two fixing plates 110 are symmetrically installed on the side wall of the multimeter housing 100. A knob 120 is rotatably connected to the top of the upper fixing plate 110. A threaded rod 130 is installed at the bottom of the knob 120 and extends between the two fixing plates 110. A ring of dense teeth is provided on the outer ring of the knob 120. The teeth can increase the friction between the hand and the knob 120, making it easier to rotate the knob 120. The bottom end of the threaded rod 130 is connected to the top of the lower fixing plate 110 through a bearing, which supports the threaded rod 130 without affecting its rotation.

[0028] Two clamping plates 200 are symmetrically located between two fixed plates 110. The top of the clamping plate 200 has a threaded hole 210, through which the threaded rod 130 rotates. A guide rod 140 is also installed between the two fixed plates 110. The top of the clamping plate 200 also has a guide hole 220, through which the guide rod 140 passes. The top of the clamping plate 200 also has a sliding hole 230. By rotating the knob 120, the threaded rod 130 is rotated. The screw structure pushes the two clamping plates 200 closer together and clamps the product, fixing the multimeter housing 100 at the position where the product needs to be tested.

[0029] A fixing block 300 is installed on the top of the multimeter housing 100. A sliding groove 310 is provided on the side wall of the fixing block 300. A slider 320 is provided inside the sliding groove 310. A slot 330 is provided on the side wall of the slider 320. A first spring 340 is connected between the slider 320 and the side wall of the sliding groove 310. A toothed groove is provided on the inner wall of the slot 330 to engage with the teeth on the surface of the knob 120. By pulling the slider 320, the slider 320 slides inside the sliding groove 310 and squeezes the first spring 340. At this time, the knob 120 separates from the inside of the slot 330. Rotating the knob 120 adjusts the position of the two clamps 200. After the adjustment is completed, the slider 320 is released. The first spring 340 rebounds and pushes the slider 320 to move towards the knob 120 until the knob 120 is embedded in the slot 330. The teeth on the surface of the knob 120 and the teeth on the inner wall of the slot 330 mesh with each other to limit the knob 120.

[0030] A slide rod 410 is installed at the bottom of the buffer plate 400. The slide rod 410 passes through the slide hole 230. A second spring 420 is connected between the buffer plate 400 and the clamping plate 200. When the clamping plate 200 approaches the product, it compresses the buffer plate 400 and moves it towards the clamping plate 200. The slide rod 410 slides inside the slide hole 230 to guide the buffer plate 400. The second spring 420 buffers the force of the buffer plate 400 towards the clamping plate 200, transforming the hard contact between the clamping plate 200 and the product into an elastic contact, thus preventing damage to the product.

[0031] To further demonstrate the authenticity and novelty of this scheme, the following relevant data is provided.

[0032] Data related to clamping and fixing effect

[0033]

[0034] Data related to ease of use

[0035]

[0036]

[0037] Data related to buffer protection effect

[0038]

[0039]

[0040] Comprehensive performance data comparison

[0041]

[0042] Data Description

[0043] The above data is based on test scenarios for conventional electronic connectors (size range 20mm×30mm-50mm×80mm), and the specific values ​​may vary slightly depending on the product specifications.

[0044] Data such as clamping force and impact force are obtained through actual measurement using force sensors, and repeatability error is calculated by standard deviation through 30 repeated tests.

[0045] The operation time comparison uses a 10-channel impedance test as a sample, including the complete process of multimeter positioning, clamping, and reading recording.

[0046] The above data directly verifies the technical effectiveness of this multi-channel impedance testing device in terms of clamping and fixing, ease of operation, and buffer protection. It effectively solves the problems of poor stability, cumbersome operation, and easy damage to products that exist in traditional handheld multimeters.

[0047] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A multi-channel impedance testing device, characterized in that, include: A multimeter housing (100) has two fixing plates (110) symmetrically mounted on its side wall. A knob (120) is rotatably connected to the top of the upper fixing plate (110). A threaded rod (130) is mounted on the bottom of the knob (120) and extends between the two fixing plates (110). The clamping plate (200) consists of two clamping plates symmetrically located between the two fixing plates (110). The top of the clamping plate (200) is provided with a threaded hole (210), and the threaded rod (130) rotates through the threaded hole (210).

2. The multi-channel impedance testing device according to claim 1, characterized in that, A guide rod (140) is also installed between the two fixing plates (110).

3. The multi-channel impedance testing device according to claim 2, characterized in that, The clamping plate (200) is also provided with a guide hole (220) at the top, and the guide rod (140) passes through the guide hole (220). The clamping plate (200) is also provided with a sliding hole (230) at the top.

4. The multi-channel impedance testing device according to claim 3, characterized in that, The outer ring of the knob (120) is provided with a ring of dense teeth.

5. A multi-channel impedance testing device according to claim 4, characterized in that, It also includes a fixing block (300), which is installed on the top of the multimeter housing (100). The fixing block (300) has a sliding groove (310) on its side wall, and a slider (320) is provided inside the sliding groove (310). The slider (320) has a slot (330) on its side wall, and a first spring (340) is connected between the slider (320) and the side wall of the sliding groove (310).

6. The multi-channel impedance testing device according to claim 5, characterized in that, It also includes a buffer plate (400), on the bottom of which a slide rod (410) is installed, the slide rod (410) passing through the slide hole (230), and a second spring (420) connecting the buffer plate (400) and the clamping plate (200).

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