Resistance detection device

Abstract

The utility model belongs to the technical field of resistance measurement accessories, and discloses a resistance detection device, which comprises two guide rails, two groups of fixing units, two groups of locking assemblies and two pieces of conductive metal, the two guide rails are correspondingly arranged in parallel at a preset distance; the two ends of each fixing unit are arranged on the two guide rails in a sliding mode respectively, and the two fixing units and the two guide rails form a plane frame. Each group of locking assemblies is arranged at the two ends of one group of fixing units respectively and is used for fixing the fixing units on the two guide rails; the two groups of fixing units are respectively used for fixing two opposite sides of the conductive film to be tested; the two pieces of conductive metal are respectively arranged on the two groups of fixing units and are electrically connected with the conductive film to be tested. According to the utility model, the fixed units slide on the guide rails to stretch the conductive film to be measured of which the two sides are respectively fixed on the two groups of fixed units, and the conductive metal on the fixed units and the conductive film to be measured form a current loop, thereby completing the measurement of the film resistance. Tedious manual operation is reduced; and the measurement efficiency is improved.

Description

Technical Field

[0001] The utility model discloses a resistance detection device, belonging to the technical field of resistance measurement accessories. Background Art

[0002] Since carbon nanotube film has excellent electrothermal conversion characteristics and is thin, soft, and washable, it is an ideal material for making wearable heating products. By covering the heat source of the self-supporting carbon nanotube film with flexible substrates such as fabrics on both sides, and designing a suitable electrode structure through insulation and pressing, a flexible heating product is formed. This flexible heating product has the characteristics of 1s fast heating, ultra-thin, light, rubbing resistance, and machine washability. Its driving voltage is as low as 5V, and it can be used in many fields such as clothing, home textiles, physical therapy, and outdoor.

[0003] When conventional carbon nanotube films are used to make flexible heating products, it is necessary to design a suitable circuit and select suitable electrodes, press the electrodes and the film together to form a complete current loop, and then achieve the purpose of heating by energizing. Under the same size, the resistance of the film varies due to various factors, resulting in failure to meet the design requirements. Therefore, after specifying the film size, it is crucial to screen the film whose resistance meets the design requirements for the production of flexible heating products.

[0004] Usually, when measuring the resistance of a film, appropriate electrodes are placed on the designed position of a carbon nanotube film of a specified size and pressed together to form a current loop, and then the resistance in the loop is measured. However, during the resistance detection process, the carbon nanotube film is light and soft, making it difficult to flatten and form a loop, resulting in measurement failure, unnecessary material waste, and even interruption of the production process of flexible heating products, affecting work efficiency. Utility Model Content

[0005] The utility model overcomes the shortcomings of the prior art and provides a resistance detection device, comprising two guide rails, two sets of fixing units, two sets of locking components and two pieces of conductive metal;

[0006] The two guide rails are arranged in parallel and correspondingly at a preset distance;

[0007] Both ends of each group of the fixing units are slidably disposed on the two guide rails, and the two groups of fixing units and the two guide rails form a plane frame;

[0008] Each group of locking assemblies is respectively arranged at two ends of a group of fixing units, and is used to fix the fixing units on the two guide rails;

[0009] The two groups of fixing units respectively fix two opposite sides of the conductive film to be tested;

[0010] The two pieces of conductive metal are respectively arranged on the two groups of fixing units and are electrically connected to the conductive film to be tested.

[0011] Preferably, each group of the fixing units includes two sliders and a bearing structure;

[0012] The two ends of the bearing structure are respectively fixedly connected to the two sliders;

[0013] Each group of locking components is respectively arranged on the two slide blocks;

[0014] The two sliding blocks are slidably disposed on the two guide rails respectively;

[0015] The conductive metal is disposed on the upper surface of the supporting structure.

[0016] Preferably, each group of the fixing units further includes a pressing structure;

[0017] The pressing structure is arranged on the upper surface of the conductive metal.

[0018] Preferably, the clamping structure is provided with a plurality of through holes, and the through holes extend along a height direction of the clamping structure.

[0019] Preferably, a bearing groove is provided on the upper surface of the bearing structure;

[0020] The conductive metal is disposed in the bearing groove.

[0021] Preferably, each group of the fixing units further includes a first magnetic attraction device and a second magnetic attraction device;

[0022] The first magnetic attraction device is arranged in the bearing groove and is located between the conductive metal and the bearing groove;

[0023] The second magnetic attraction device is disposed on the pressing structure and corresponds to the position of the first magnetic attraction device.

[0024] Preferably, a pressing groove is provided on the pressing structure;

[0025] The pressing groove corresponds to the position of the bearing groove;

[0026] The second magnetic attraction device is arranged in the pressing groove.

[0027] Preferably, the pressing structure is hinged to the bearing structure.

[0028] Preferably, the conductive metal is copper foil.

[0029] Preferably, it also includes a bottom plate;

[0030] The bottom plate is located on the lower surface of the two guide rails, and is used to support and fix the two guide rails. Beneficial effect: The utility model uses two groups of fixing units to fix the two opposite sides of the conductive film to be tested, and uses the sliding of the fixing units on the guide rails to stretch and flatten the conductive film to be tested, and uses the conductive metal set on the fixing units to contact the conductive film to be tested to form a current loop, thereby completing the measurement of the resistance of the conductive film to be tested. The magnetic suction device of the utility model allows the conductive film to be tested to be in close contact with the conductive metal, avoiding problems such as deformation of the conductive film to be tested due to excessive pressing force or disconnection of the loop due to insufficient pressing force. The utility model reduces tedious manual operations, improves work efficiency, and greatly improves measurement efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 Schematic diagram of the use process of the embodiment of the utility model, wherein (a) is a schematic diagram of the device in the open state of the clamping structure, (b) is a schematic diagram of the device after placing the conductive film to be tested and the copper foil, (c) is a schematic diagram of the device after the clamping structure is closed and the conductive film to be tested is stretched and spread, and (d) is a schematic diagram of measurement using a multimeter;

[0032] Figure 2 Three views of the bearing structure of the embodiment of the utility model, wherein (a) is a top view, (b) is a schematic diagram of the MM section in (a), and (c) is a schematic diagram of the side view;

[0033] Figure 3 The three views of the clamping structure of the embodiment of the utility model are shown, wherein (a) is a bottom view of the clamping structure, (b) is a NN cross-sectional view of (a), and (c) is a side view;

[0034] Figure 4 It is a cross-sectional schematic diagram of a fixing unit in an embodiment of the utility model;

[0035] Figure 5 Schematic diagram of the overall structure of the resistance measuring device in the embodiment of the utility model.

[0036] In the figure: A, fixed bottom plate; B, connecting plates on both sides; C, bearing structure; D, guide rail; E, clamping structure; F, slider; G, conductive film to be tested; H, conductive metal; I, hinge; J, first magnetic device; K, second magnetic device; L, locking screw; 1, magnetic device fixing hole; 2, through hole; 3, hinge installation hole; 4, clamping groove; 5, bearing groove. DETAILED DESCRIPTION

[0037] In the following description, specific details such as specific system structures and technologies are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present invention. However, it should be clear to those skilled in the art that the present invention can also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems and devices are omitted to avoid unnecessary details that hinder the description of the present invention.

[0038] The preferred technical solution of the utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0039] like Figure 2-5 As shown, a resistance detection device comprises two guide rails D, two groups of fixing units, two groups of locking components and two pieces of conductive metal H; the two guide rails D are arranged in parallel and correspondingly at a preset distance; the two ends of each group of fixing units are slidably arranged on the two guide rails D, and the two groups of fixing units and the two guide rails D form a plane frame; each group of locking components is respectively arranged at the two ends of a group of fixing units, for fixing the fixing units on the two guide rails; the two groups of fixing units respectively fix two opposite sides of a conductive film G to be tested; the two pieces of conductive metal H are respectively arranged on the two groups of fixing units, and are electrically connected to the conductive film G to be tested.

[0040] Specifically, the two guide rails D in the utility model are arranged in parallel and correspondingly at a preset distance, and the preset distance is determined according to the size of the conductive film G to be measured; the fixing unit is in a long strip shape, and the two ends of each fixing unit are respectively arranged on the two guide rails D, wherein the fixing unit can move along the two guide rails D, and the two groups of fixing units and the two guide rails D form a plane frame, and the size of the frame is determined according to the size of the conductive film G to be measured. The utility model can be used for measuring the resistance of conductive films G to be measured of various sizes. The two groups of fixing units fix two opposite sides of the conductive film G to be tested respectively. Specifically, the fixing units can be fixed on the guide rails under the action of the locking assembly. When in use, the first group of fixing units is fixed on the two guide rails D by the locking assembly, and the second group of fixing units is in a slidable state. The two opposite sides of the conductive film G to be tested are fixed on the two groups of fixing units respectively. A force is applied to the second group of fixing units in the slidable state to make them slide on the two guide rails D, drive one side of the conductive film G to be tested away from the other side, and then stretch the conductive film G to be tested. When the conductive film G to be tested reaches the preset stretched state, the force applied to the second group of fixing units is removed, and the second group of fixing units is fixed by the locking assembly. The conductive film G to be tested is kept in a stretched and flat state. Two pieces of conductive metal H are respectively arranged on the two groups of fixing units and are electrically connected to the conductive film G to be tested. Specifically, in one embodiment, the conductive metal H sandwiches the conductive film G to be tested between the conductive metal H and the fixing unit, and the conductive metal H is directly in contact with the conductive film G to be tested. The weight of the conductive metal H is much greater than that of the conductive film G to be tested, so the conductive film G to be tested can be pressed tightly onto the fixing unit.

[0041] The resistance detection device of the present invention fixes two opposite sides of the conductive film G to be tested by two groups of fixing units, so that when the fixing units move on the two guide rails D, the conductive film G to be tested is stretched and is in a flat state. The maximum spacing distance between the two groups of fixing units is adjusted according to the size of the conductive film G to be tested, so that the device can meet multi-size measurement, greatly reducing the time and workload of manual paving, and avoiding the adverse effect of friction during manual paving on the performance of the conductive film G to be tested, thereby saving time and materials.

[0042] Furthermore, each group of the fixed units includes two sliders F and a bearing structure C; the two sliders F are respectively slidably set on the two guide rails D; each group of the locking components is respectively set on the two sliders; the two ends of the bearing structure C are respectively fixedly connected to the two sliders F; the conductive metal H is set on the upper surface of the bearing structure C.

[0043] Specifically, each fixing unit of the utility model includes two sliders F and a bearing structure C. The two sliders F are respectively arranged on two guide rails D and can slide on the guide rails D. Each set of locking components is respectively arranged on the two sliders F. Specifically, in the utility model, each set of locking components is specifically two locking screws L. Each locking screw L passes through a threaded hole on the slider F. By adjusting the depth of the locking screw L in the threaded hole, the locking screw L is in close contact with the guide rail D or not in contact with the guide rail D to control whether the slider F is locked. Specifically, when the locking screw L is tightened, the locking screw L is in close contact with the guide rail D. Under the action of the thread pair, the locking screw L presses the slider F on the guide rail D, thereby fixing the slider F on the guide rail D. When the locking screw L is loosened, it is no longer in contact with the guide rail D, and the pressing effect on the slider F disappears, and the slider F can slide on the guide rail D. Two sliders F are fixed at both ends of the bearing structure C, so that the bearing structure C slides along the guide rail D through the sliders F. The bearing structure C is used to carry and place the conductive film G to be tested. The bearing structure C of the two sets of fixed units respectively carries two opposite sides of the conductive film G to be tested. The conductive metal H is arranged on the upper surface of the bearing structure C, and the edge of the conductive film G to be tested is clamped between the bearing structure C and the conductive metal H. The conductive metal H and the conductive film G to be tested form a loop, which can be used to use a measuring device, i.e., a multimeter to contact the conductive metal H to measure the resistance of the conductive film G to be tested. In one embodiment, the conductive metal H has a large weight, and the conductive film G to be tested can be pressed against the bearing structure C.

[0044] Furthermore, each group of the fixing units also includes a clamping structure E; the clamping structure E is arranged on the upper surface of the conductive metal H.

[0045] Specifically, to ensure that the conductive film G to be measured is firmly clamped between the bearing structure C and the conductive metal H, to ensure that the circuit is always complete, avoid using the bulky conductive metal H, so as to avoid inaccurate measurement data. This embodiment also includes a clamping structure E, which is arranged on the upper surface of the conductive metal H. When measuring the resistance of the conductive film G to be measured, it can be used to use a multimeter to contact the side of the conductive metal H clamped by the clamping structure E and the bearing structure C. The clamping structure E can prevent the conductive metal H from being displaced by other factors during the measurement process, resulting in separation from the conductive film G to be measured and disconnection of the circuit. The clamping structure E makes the conductive metal H in close contact with the conductive film G to be measured, ensuring that the current circuit formed by the conductive metal H and the conductive film G to be measured is always complete, effectively reducing the probability of measurement failure due to incomplete circuit, thereby improving the efficiency of resistance measurement.

[0046] Furthermore, the clamping structure E is provided with a plurality of through holes 2 , and the through holes 2 extend along the height direction of the clamping structure E.

[0047] Specifically, in order to relieve manual operation so that the measuring device, i.e., the test leads of a multimeter, can contact the conductive metal H, and at the same time prevent other wires of the multimeter from causing the conductive film G to be measured to curl or interfere with the measurement results, in this embodiment, a plurality of through holes 2 are provided on the clamping structure E, and the through holes 2 extend along the height direction of the clamping structure E for inserting the test leads of the multimeter.

[0048] Furthermore, a bearing groove 5 is formed on the upper surface of the bearing structure C; and the conductive metal H is disposed in the bearing groove 5 .

[0049] Specifically, in order to further ensure that the fixed unit clamps the conductive film G to be tested, in this embodiment, a bearing groove 5 is opened on the upper surface of the bearing structure C, and the conductive metal H is arranged in the bearing groove 5. When in use, the conductive film G to be tested is clamped between the bearing groove 5 and the conductive metal H. When the fixed unit drives the two edges of the conductive film G to be tested to stretch along the guide rail D, the conductive film G to be tested is not easy to fall out of the fixed unit.

[0050] Furthermore, each group of the fixing units also includes a first magnetic device J and a second magnetic device K; the first magnetic device J is arranged in the bearing groove 5 and is located between the conductive metal H and the bearing groove 5; the second magnetic device K is arranged on the clamping structure E and corresponds to the position of the first magnetic device J.

[0051] Specifically, in order to further ensure that the fixing unit clamps and fixes the conductive film G to be tested, a first magnetic attraction device J is provided in the bearing groove 5 on the bearing structure C of each group of fixing units, and a second magnetic attraction device K is provided on the clamping structure E, and the positions of the first magnetic attraction device J and the second magnetic attraction device K correspond. Specifically, in this embodiment, the first magnetic attraction device J and the second magnetic attraction device K are both magnets, and the first magnetic attraction device J and the second magnetic attraction device K attract each other.

[0052] Furthermore, a clamping groove 4 is provided on the clamping structure E; the clamping groove 4 corresponds to the position of the bearing groove 5 ; and the second magnetic attraction device K is arranged in the clamping groove 4 .

[0053] Specifically, the clamping structure E in this embodiment is further provided with a clamping groove 4, the clamping groove 4 and the bearing groove 5 are located in a corresponding position, and a second magnetic attraction device K is provided in the clamping groove 4. Figure 4As shown, the two opposite sides of the conductive film G to be tested are respectively sandwiched between the first magnetic device J and the conductive metal H, and the upper surface of the conductive metal H is provided with a second magnetic device K. The first magnetic device J and the second magnetic device K attract each other, so that the conductive film G to be tested is firmly fixed on the fixing unit. In this embodiment, the first magnetic device J and the second magnetic device K are respectively fixed in the bearing groove 5 and the clamping groove 4 through the magnetic device fixing hole 1. The detection device uses the characteristic of oppositely charged magnets to apply a bidirectional clamping force to the conductive metal H and the conductive film G to be tested, so that the conductive metal H and the conductive film G to be tested fit tightly, effectively solving the problem that the flash edge of the conductive film G to be tested is lifted due to too small a clamping force during the clamping process of the conductive film G to be tested and the conductive metal H, resulting in a circuit disconnection; or the problem that the shape of the conductive film G to be tested is changed due to too large a clamping force, thereby improving the rate of conductive film resistance measurement and the qualified rate of finished products in the production process of flexible heating products.

[0054] Furthermore, the clamping structure E is hinged to the bearing structure C.

[0055] Specifically, in this embodiment, the pressing structure E and the bearing structure C are hingedly connected by a hinge I, such as Figure 2 and Figure 3 As shown, the side surfaces of the bearing structure C and the pressing structure E are both provided with hinge mounting holes 3, and the pressing structure E can be flipped and arranged on the bearing structure C, and its flipped state is convenient for setting the conductive film G to be tested, so that the conductive film G to be tested can be easily fixed.

[0056] Furthermore, the conductive metal H is copper foil.

[0057] Specifically, the conductive metal H may be silver, aluminum, gold, copper, etc. Considering the cost and use effect, copper foil is selected as the conductive metal H in this embodiment.

[0058] Furthermore, it also includes a bottom plate; the bottom plate is located on the lower surface of the two guide rails D and is used to support and fix the two guide rails D.

[0059] Specifically, the present embodiment also includes a base plate, which is specifically two fixed base plates A. The two ends of the two fixed base plates A are respectively fixedly connected to the two guide rails D, and are used to limit a preset distance between the two guide rails D and fix the two guide rails D. Before use, the device is fixed on a horizontal plane by the fixed base plate A to prevent the device from being displaced, thereby facilitating measurement operations.

[0060] Specifically, the present embodiment also includes two side connecting plates B, which are in the shape of long strips and fixed on two fixed bottom plates A. The two side connecting plates B are used to set two guide rails D to ensure that the two guide rails D are linearly parallel.

[0061] The method of using the resistance measuring device in this embodiment is as follows: Figure 1 As shown, after determining the size of the conductive film G to be tested, specifically, in this embodiment, the conductive film G to be tested is a carbon nanotube film, cut a carbon nanotube film that meets the size specifications, and place two opposite sides of the film in the bearing grooves 5 of the two groups of bearing structures C respectively, and set copper foil on the upper surface of the film, and buckle the clamping structure E, so that the first magnetic attraction device J and the second magnetic attraction device K in the bearing structure C and the clamping structure E apply a clamping force to the film and copper foil sandwiched therein; slide the two groups of fixing units respectively, or fix one group of fixing units and slide the other group of fixing units to increase the distance between the two groups of fixing units until the film is in a flat state, and fix the slider F by the locking screw L to fix the fixing unit on the guide rail D; then insert the adjusted multimeter probe into the through hole 2 on the clamping structure E, so that the tip of the probe contacts the copper foil, read the resistance value at this time, and compare it with the preset value to determine whether the film meets the requirements. If so, the film is selected as the material for preparing the heating product. If not, reselect films with other parameters under the specified size and repeat the above steps until the selected film parameters meet the requirements.

[0062] The utility model uses two sets of fixing units to fix two opposite sides of the conductive film G to be tested, uses the sliding of the fixing units on the guide rail D to stretch and flatten the conductive film G to be tested, uses the conductive metal H set on the fixing units to contact the conductive film G to be tested, forms a current loop, and completes the measurement of the resistance of the conductive film G to be tested. The magnetic suction device of the utility model makes the conductive film G to be tested in close contact with the conductive metal H, avoids the problems of deformation of the conductive film G to be tested due to excessive pressing force or disconnection of the loop due to insufficient pressing force, and reduces the tedious manual operation, improves the work efficiency, and greatly improves the measurement efficiency.

[0063] The above are only a few embodiments of the present application and do not constitute any form of limitation to the present application. Although the present application is disclosed as above with preferred embodiments, it is not intended to limit the present application. Any technician familiar with the profession, without departing from the scope of the technical solution of the present application, using the technical content disclosed above to make slight changes or modifications are equivalent to equivalent implementation cases and fall within the scope of the technical solution.

Claims

1. A resistance detection device, It is characterized in that It includes two guide rails, two sets of fixing units, two sets of locking components and two pieces of conductive metal; The two guide rails are arranged in parallel and correspondingly at a preset distance; Both ends of each group of the fixing units are slidably disposed on the two guide rails, and the two groups of fixing units and the two guide rails form a plane frame; Each group of locking assemblies is respectively arranged at two ends of a group of fixing units, and is used to fix the fixing units on the two guide rails; The two groups of fixing units respectively fix two opposite sides of the conductive film to be tested; The two pieces of conductive metal are respectively arranged on the two groups of fixing units and are electrically connected to the conductive film to be tested.

2. The resistance detection device according to claim 1, It is characterized in that Each group of the fixing units includes two sliders and a bearing structure; The two sliding blocks are slidably disposed on the two guide rails respectively; Each group of locking components is respectively arranged on the two slide blocks; The two ends of the bearing structure are respectively fixedly connected to the two sliders; The conductive metal is disposed on the upper surface of the supporting structure.

3. The resistance detection device according to claim 2, It is characterized in that Each group of the fixing units also includes a pressing structure; The pressing structure is arranged on the upper surface of the conductive metal.

4. The resistance detection device according to claim 3, It is characterized in that The clamping structure is provided with a plurality of through holes, and the through holes extend along the height direction of the clamping structure.

5. The resistance detection device according to claim 3, It is characterized in that The upper surface of the bearing structure is provided with a bearing groove; The conductive metal is disposed in the bearing groove.

6. The resistance detection device according to claim 5, It is characterized in that Each group of the fixing units further includes a first magnetic attraction device and a second magnetic attraction device; The first magnetic attraction device is arranged in the bearing groove and is located between the conductive metal and the bearing groove; The second magnetic attraction device is disposed on the pressing structure and corresponds to the position of the first magnetic attraction device.

7. The resistance detection device according to claim 6, It is characterized in that The clamping structure is provided with a clamping groove; The pressing groove corresponds to the position of the bearing groove; The second magnetic attraction device is arranged in the pressing groove.

8. The resistance detection device according to claim 3, It is characterized in that The pressing structure is hinged to the bearing structure.

9. The resistance detection device according to claim 1, It is characterized in that The conductive metal is copper foil.

10. The resistance detection device according to claim 1, It is characterized in that Also includes a base plate; The bottom plate is located on the lower surfaces of the two guide rails and is used for supporting and fixing the two guide rails.

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