Precise wire resistance tester

Abstract

The utility model discloses a precision wire rod resistance tester, which belongs to the technical field of wire rod detection, and adopts the technical scheme that the precision wire rod resistance tester comprises a resistance meter, an anti-falling mechanism is arranged on the rear side of the resistance meter, and a dustproof mechanism is arranged at the top of the resistance meter, so that the equipment damage risk can be greatly reduced; the multi-stage component force structure can effectively buffer falling impact force, reduce maintenance and replacement cost, prolong the service life and adapt to various falling scenes, single protection in the traditional technology is difficult to deal with different conditions, the structure can be automatically adjusted according to falling postures, multi-angle buffering protection is achieved, use safety and efficiency are powerfully guaranteed, and the structure is suitable for popularization and application. Data loss, work interruption and potential safety hazards caused by falling in the prior art are avoided, it is ensured that testing is smooth, safety is enhanced, equipment environment adaptability is improved, traditional protection is limited in effect in a complex environment, equipment can be effectively protected in various scenes, and the application range is widened.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of wire rod detection, especially to a precision wire rod resistance tester. BACKGROUND

[0002] In many fields such as industrial production and scientific research, precision wire rod resistance detection is crucial. Traditional detection relies on large desktop equipment. Although such equipment has high precision, it has many limitations, such as large size, inconvenience to move, and can only be used in fixed places, limiting on-site detection needs. It is complex to operate, requires professional personnel to operate and takes a long time, which is not conducive to rapid detection. For some special scenarios, such as outdoor work and production line inspection, it cannot meet the timely and convenient detection requirements. Under this background, portable resistance detectors have emerged. They are small in size, easy to carry, and can perform precision wire rod resistance detection anytime and anywhere. They are easy and fast to operate, can effectively make up for the shortcomings of traditional equipment, greatly improve detection efficiency and flexibility, and meet the detection needs of multiple scenarios.

[0003] In the prior art, workers usually carry a lot of detection equipment when conducting fire detection. Handheld grounding resistance testers are placed in tool bags, occupying a lot of space and being inconvenient to use frequently.

[0004] To solve the above problems, the existing patent (publication number: CN221883764U) proposes a precision wire rod resistance tester. The resistance tester includes a resistance tester body, an elastic expansion belt, a first protective belt, a second protective belt, and a clamping assembly. The resistance tester body includes a detection part and a handheld part connected in series. One end of the first protective belt is rotatably connected to the handheld part of the resistance tester body, and the other end is connected to the elastic expansion belt. One end of the second protective belt is slidably connected to the resistance tester body, and the other end is connected to the elastic expansion belt. The clamping assembly is connected to the handheld part. The clamping assembly is used to clamp the elastic expansion belt. The axis around which the first protective belt rotates is the first axis. The direction in which the second protective belt slides is the first direction. The direction of the first axis is perpendicular to the first direction. The second protective belt is located between the detection part and the first protective belt. The application has the effect of facilitating the carrying of handheld resistance testers.

[0005] To solve the above problems, the existing patent provides a solution. However, portable resistance detection equipment is small and easy to carry, but it can also easily fall from the hand due to various factors, causing damage to the detector. Although the detector generally has a protective shell on the outside, it does not have a buffer and decomposition function for the falling force. If the detector falls face down, it may cause significant damage to the screen or operation buttons, making it impossible to protect the resistance detector from falling damage. In addition, the resistance detector connection port position is exposed to the air for a long time during transportation and carrying, which can cause dust to adhere and accumulate, resulting in a short circuit or even damage to the connection port.

[0006] To this end, a kind of precision wire resistance tester is proposed. The utility model discloses a content

[0007] The utility model discloses a precision wire resistance tester can solve the problem of the existing portable resistance meter drop damage and wiring port is easy to dust.

[0008] To realize the above-mentioned purpose, the utility model provides the following technical scheme: a kind of precision wire resistance tester, including resistance meter, the rear side of the resistance meter is provided with anti-falling mechanism, the top of the resistance meter is provided with dustproof mechanism;

[0009] The anti-falling mechanism includes installation bottom plate, cambered elastic protective shell, elastic buffer layer, cambered elastic inner chamber and component of force, the installation bottom plate is arranged at the rear side of resistance meter, the cambered elastic protective shell is fixedly connected at the rear side of installation bottom plate, the elastic buffer layer is fixedly connected at the inner side of cambered elastic protective shell, the cambered elastic inner chamber is fixedly connected at the inner side of elastic buffer layer, the component of force is movably connected at the inner side of cambered elastic inner chamber.

[0010] Preferably, the top of the resistance meter is provided with a sealed box, and the top of the sealed box is rotatably connected with a cover.

[0011] Preferably, the bottom of the cover is fixedly connected with a sealing block, the top of the sealed box is provided with a sealing groove, and the sealing block is movably connected to the inner side of the sealing groove.

[0012] Preferably, the inner side of the cover is fixedly connected with a mucosa net.

[0013] Preferably, the inner side of the cambered elastic inner chamber is fixedly connected with an elastic guide limiting plate, the rear side of the inner side of the cambered elastic inner chamber is fixedly connected with a telescopic support on the rear side of the installation bottom plate, the inner side of the telescopic support is fixedly connected with a compression spring, and the outer side of the telescopic support is fixedly connected with a push-pull plate.

[0014] Preferably, the rear side of the installation bottom plate is fixedly connected with a sliding guide rod, the outer side of the sliding guide rod is slidably connected with a sliding force plate, the outer side of the sliding force plate and the sliding guide rod is fixedly connected with a first tension spring, the outer side of the top sliding force plate and the bottom sliding force plate is fixedly connected with a second tension spring, and the outer side of the sliding force plate and the push-pull plate is rotatably connected with a linkage plate.

[0015] Preferably, the outer side of the resistance meter is movably connected with a hard protective shell, the installation bottom plate is fixedly connected to the rear side of the hard protective shell, and the sealed box is fixedly connected to the top of the hard protective shell.

[0016] Preferably, the top of the resistance meter is fixedly connected with a wiring port, the wiring port is movably connected to the inner side of the hard protective shell, and the wiring port is arranged on the inner side of the sealing box.

[0017] Compared with the prior art, the utility model has the advantages that:

[0018] 1、The anti-falling mechanism can greatly reduce the risk of equipment damage, the existing technology only relies on the protection of the hard shell, and the multi-stage force component structure can effectively buffer the impact force, reduce the maintenance and replacement cost, prolong the service life, and adapt to various falling scenes, the single protection of the traditional technology cannot cope with different situations, the structure can be automatically adjusted according to the falling posture, multi-angle buffering protection, and the use safety and efficiency are effectively guaranteed, the data loss, work interruption and safety hazards caused by the prior art due to falling are avoided, the test is ensured to be smooth, the safety is enhanced, the environmental adaptability of the equipment is also improved, the traditional protection has limited effect in complex environments, the equipment can be effectively protected in various scenes, and the use range is widened.

[0019] 2、The dustproof mechanism can prolong the service life of the wiring port, dust accumulation for a long time under the traditional technology can accelerate the aging and damage of the wiring port, the sealing box can keep the inside of the wiring port clean, reduce the hardware loss caused by dust, and make the wiring port work stably for a long time, furthermore, the test accuracy is ensured, the wiring port can more accurately acquire data when performing resistance testing, the reliability and accuracy of the test result are improved, and the application scene with high test precision requirement is met. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a whole structure diagram of the precision wire resistance tester of the utility model;

[0021] Figure 2 It is a partial structure diagram of the precision wire resistance tester of the utility model;

[0022] Figure 3 It is a whole structure diagram of the anti-falling mechanism of the utility model;

[0023] Figure 4 It is a whole structure diagram of the force component assembly of the utility model;

[0024] Figure 5 It is a whole structure diagram of the dustproof mechanism of the utility model.

[0025] In the figure, 1, resistance meter; 2, anti-falling mechanism; 21, mounting bottom plate; 22, arc surface elastic protective shell; 23, elastic buffer layer; 24, arc surface elastic inner cavity; 25, force component; 25a, elastic guide limiting plate; 25b, telescopic support; 25c, compression spring; 25d, push-pull plate; 25e, sliding guide rod; 25f, sliding force plate; 25g, first tension spring; 25h, second tension spring; 25i, linkage plate; 3, dustproof mechanism; 31, sealing box; 32, cover; 33, sealing block; 34, sealing groove; 35, mucosa net; 4, hard protective shell; 5, wiring port. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0027] Please refer to Figures 1-5 The utility model provides technical schemes:

[0028] A precise wire resistance tester, including resistance meter 1, the rear side of resistance meter 1 is provided with anti-falling mechanism 2, and the top of resistance meter 1 is provided with dustproof mechanism 3;

[0029] Anti-falling mechanism 2 includes mounting bottom plate 21, arc surface elastic protective shell 22, elastic buffer layer 23, arc surface elastic inner cavity 24 and force component 25, mounting bottom plate 21 is arranged at the rear side of resistance meter 1, arc surface elastic protective shell 22 is fixedly connected at the rear side of mounting bottom plate 21, elastic buffer layer 23 is fixedly connected at the inner side of arc surface elastic protective shell 22, arc surface elastic inner cavity 24 is fixedly connected at the inner side of elastic buffer layer 23, and force component 25 is movably connected at the inner side of arc surface elastic inner cavity 24.

[0030] In the embodiment: through mounting bottom plate 21, anti-falling mechanism 2 can be installed and disassembled, through arc surface elastic protective shell 22, elastic buffer layer 23 and arc surface elastic inner cavity 24, preliminary force buffering can be carried out, through force component 25, falling force can be converted into elastic potential energy and mechanical work, and falling impact force is further relieved.

[0031] Specifically, as shown in Figure 1 , Figure 2 , Figure 5 The top of resistance meter 1 is provided with sealing box 31, and the top of sealing box 31 is rotationally connected with cover 32.

[0032] Specifically, as shown in Figure 1 ,Figure 2 、 Figure 5 As shown in the drawings, the bottom of the cover 32 is fixedly connected with a sealing block 33, and the top of the sealing box 31 is provided with a sealing groove 34, and the sealing block 33 is movably connected to the inner side of the sealing groove 34.

[0033] Specifically, as shown in the drawings, Figure 1 、 Figure 2 、 Figure 5 The inner side of the cover 32 is fixedly connected with a mucosa net 35.

[0034] In this embodiment: the sealing box 31 is sealed by the cover 32 through the wiring port 5 to isolate from the outside, reduce air flow to cause dust to adhere and accumulate, and when detecting, the cover 32 is twisted to open along the shaft, so that the sealing block 33 is inserted after the groove, and the wire resistance is measured by the resistance meter 1. When the cover 32 is closed, the sealing block 33 is inserted into the groove to seal and clamp, the mucosa net 35 on the inner side of the cover 32 adheres to the falling and circulating dust during detection, and prevents the contact from being poor or even damaged due to the accumulation of dust in the wiring port 5.

[0035] Specifically, as shown in the drawings, Figure 1 、 Figure 2 The inner side of the arc surface elastic inner cavity 24 is fixedly connected with an elastic guide limiting plate 25a, the rear side of the inner side of the arc surface elastic inner cavity 24 is fixedly connected with a telescopic support 25b, the inner side of the telescopic support 25b is fixedly connected with a compression spring 25c, and the outer side of the telescopic support 25b is fixedly connected with a push-pull plate 25d.

[0036] Specifically, as shown in the drawings, Figure 5 、 Figure 3 The rear side of the mounting bottom plate 21 is fixedly connected with a sliding guide rod 25e, the outer side of the sliding guide rod 25e is slidingly connected with a sliding force plate 25f, the outer side of the sliding force plate 25f and the sliding guide rod 25e is fixedly connected with a first tension spring 25g, the outer side of the top sliding force plate 25f and the bottom sliding force plate 25f is fixedly connected with a second tension spring 25h, and the outer side of the sliding force plate 25f and the push-pull plate 25d is rotatably connected with a linkage plate 25i.

[0037] In the embodiment: after the air drop steering by the ohmmeter 1, the outermost end of the arc-surface elastic protective shell 22 is impacted by the maximum force, which is an elastic material, and is deformed and shrunk under stress to extrude the inner elastic buffer layer 23, and the force is transmitted to the arc-surface elastic inner cavity 24, the compression arc-surface elastic inner cavity 24 and the support bracket of the mounting bottom plate 21, the compression spring 25c is stretched and retracted to stretch and retract the support column 25b, the push-pull plate 25d between the two compression springs 25c is repeatedly moved, the connecting plate 25i is turned during the movement of the push-pull plate 25d, and the two sides of the sliding force plate 25f are pulled to reciprocate on the sliding guide rod 25e, the first tension spring 25g and the second tension spring 25h are repeatedly compressed to stretch and retract, the force is converted into elastic potential energy, the sliding force plate 25f and the push-pull plate 25d are driven by the potential energy to transmit power, and the force of the hard protective shell 4 outside the ohmmeter 1 is not enough to destroy it.

[0038] Specifically, as shown in Figure 4 、 Figure 3 , the hard protective shell 4 is movably connected to the outside of the ohmmeter 1, the mounting bottom plate 21 is fixedly connected to the rear side of the hard protective shell 4, and the sealing box 31 is fixedly connected to the top of the hard protective shell 4.

[0039] Specifically, as shown in Figure 4 Figure 1 Figure 2 Figure 2 , the top of the ohmmeter 1 is fixedly connected to the wiring port 5, the wiring port 5 is movably connected to the inside of the hard protective shell 4, and the wiring port 5 is arranged on the inside of the sealing box 31.

[0040] In the embodiment: the hard protective shell 4 can play a supporting and mounting role and can be used for preliminary protection, and the wiring port 5 can be used for connecting other transmission lines and test tools to detect resistance.

[0041] Working principle: before the handheld resistance meter 1 is used to detect the resistance of the precision wire, the wiring port 5 is in a sealed state by closing the sealing box 31 with the cover 32, and does not contact with the outside air, reducing the dust generated by air flow and the accumulation of dust caused by long-term contact. When detection is needed, twist the cover 32 along the shaft to open it, and make the sealing block 33 separate from the sealing groove 34, then insert the wire into the resistance meter 1 for precise wire resistance detection. When the detection is completed, pull out the wire and close the cover 32. When the cover 32 is closed, the sealing block 33 will be clamped into the inside of the sealing groove 34 to complete the sealing and clamping, and the adhesive film net 35 is arranged inside the cover 32, which can adhere the dust falling into the inside of the sealing box 31 and the dust generated by air flow during resistance detection, avoiding the accumulation of dust in the wiring port 5 for a long time, which may cause poor contact or even damage to the wiring port 5. When the handheld resistance meter 1 is carried, it may be dropped due to various factors, which may cause damage. The resistance meter 1 is equipped with a hard protective shell 4 on the outside, but it cannot decompose and buffer the falling force, and the resistance meter 1 will still be damaged when it falls directly on the front, such as the display screen being broken. The arc elastic protective shell 22 is installed on the back of the resistance meter 1 by installing the bottom plate 21, and the shape of the arc elastic protective shell 22 is a streamline arc surface, which conforms to the principle of aerodynamics. When it falls and contacts with the air, it will naturally guide the falling surface to the back after a certain distance, avoiding the direct impact on the front screen of the resistance meter 1, and the distance of air flow can be shortened by increasing the weight inside the arc elastic protective shell 22, so that the air flow can be quickly diverted when falling. When the resistance meter 1 falls in the air and completes the turning, the most outer end of the arc elastic protective shell 22 will be subjected to the greatest falling impact force, and the arc elastic protective shell 22 is made of elastic material, which will deform and contract after being subjected to the impact force, and will squeeze the inner elastic buffer layer 23 to decompose the falling force into multiple forces. The decomposed falling force will be transmitted to the arc elastic inner cavity 24, and will squeeze the arc elastic inner cavity 24 and the compression spring 25c of the mounting bottom plate 21 bracket to stretch and retract and pull the telescopic strut 25b to stretch and retract, so that the push-pull plate 25d between the two compression springs 25c can move back and forth. The push-pull plate 25d will drive the connecting plate 25i to rotate and pull the two sliding force plates 25f to slide back and forth on the sliding guide rod 25e, and will repeatedly press the first tension spring 25g and the second tension spring 25h to make them stretch and retract repeatedly. Thus, the decomposed force is gradually converted into elastic potential energy, and the sliding force plate 25f and the push-pull plate 25d are driven by the elastic potential energy to do work, so that the falling force reaching the hard protective shell 4 on the outside of the resistance meter 1 is not enough to damage the hard protective shell 4. By setting the mounting bottom plate 21, when the inside structure of the arc elastic protective shell 22 is damaged, it can be replaced in time to avoid damage caused by falling during the period.

[0042] The above merely describes the preferred embodiments of the present application, and is not intended to limit the present application, and any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A precision wire resistance tester comprising a resistance meter (1), characterized in that: The back side of the resistance meter (1) is provided with an anti-falling mechanism (2), and the top of the resistance meter (1) is provided with a dustproof mechanism (3); The anti-falling mechanism (2) comprises a mounting bottom plate (21), an arc-shaped elastic protective shell (22), an elastic buffer layer (23), an arc-shaped elastic inner cavity (24) and a force component (25), the mounting bottom plate (21) is arranged on the back side of the resistance meter (1), the arc-shaped elastic protective shell (22) is fixedly connected to the back side of the mounting bottom plate (21), the elastic buffer layer (23) is fixedly connected to the inner side of the arc-shaped elastic protective shell (22), the arc-shaped elastic inner cavity (24) is fixedly connected to the inner side of the elastic buffer layer (23), and the force component (25) is movably connected to the inner side of the arc-shaped elastic inner cavity (24).

2. The precision wire resistance tester of claim 1, wherein: The top of the resistance meter (1) is provided with a sealed box (31), and the top of the sealed box (31) is rotatably connected with a cover (32).

3. The precision wire resistance tester of claim 2, wherein: The bottom of the cover (32) is fixedly connected with a sealing block (33), the top of the sealed box (31) is provided with a sealing groove (34), and the sealing block (33) is movably connected to the inner side of the sealing groove (34).

4. The precision wire resistance tester of claim 2, wherein: The inner side of the cover (32) is fixedly connected with a mucosa net (35).

5. The precision wire resistance tester of claim 1, wherein: The inner side of the arc-shaped elastic inner cavity (24) is fixedly connected with an elastic guide limiting plate (25a), the back side of the mounting bottom plate (21) is fixedly connected with a telescopic support (25b), the inner side of the telescopic support (25b) is fixedly connected with a compression spring (25c), and the outer side of the telescopic support (25b) is fixedly connected with a push-pull plate (25d).

6. The precision wire resistance tester of claim 5, wherein: The back side of the mounting bottom plate (21) is fixedly connected with a sliding guide rod (25e), the outer side of the sliding guide rod (25e) is slidably connected with a sliding force plate (25f), the outer sides of the sliding force plate (25f) and the sliding guide rod (25e) are fixedly connected with first tension springs (25g), the outer sides of the top and bottom sliding force plates (25f) are fixedly connected with second tension springs (25h), and the outer sides of the sliding force plate (25f) and the push-pull plate (25d) are rotatably connected with a linkage plate (25i).

7. The precise wire resistance tester according to claim 2, wherein: The outer side of the resistance meter (1) is movably connected with a hard protective shell (4), the mounting bottom plate (21) is fixedly connected to the back side of the hard protective shell (4), and the sealed box (31) is fixedly connected to the top of the hard protective shell (4).

8. The precision wire resistance tester of claim 7, wherein: The top of the resistance meter (1) is fixedly connected with a wiring port (5), the wiring port (5) is movably connected to the inner side of the hard protective shell (4), and the wiring port (5) is arranged on the inner side of the sealed box (31).

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