A foldable multi-functional testing instrument case

Abstract

This utility model relates to the field of testing equipment, specifically to a foldable multifunctional testing instrument case, comprising: a case base with a slide rail fixed thereon, a mounting seat on the case base with a clamping component for fixing the second end of the workpiece to be tested; a movable block slidably fitted to the slide rail, with a threaded sleeve embedded thereon; a drive screw rotatably mounted on the case base, threadedly fitted to the threaded sleeve, and its extension direction parallel to the slide rail; a first base plate fixed to the movable block, with a lateral connecting component at its end for detachable connection to the vernier of a scale; and a second base plate fixed to the first base plate, its extension direction consistent with the slide rail, with a push-pull gauge mounted on the second base plate. This utility model has a compact structure, is easy to operate, safe and efficient, and can meet the needs of high-precision, multifunctional, and safe testing of plastic parts, while effectively preventing debris splashing, ensuring operational safety, and facilitating intuitive observation of the testing process.

Description

Technical Field

[0001] This utility model relates to the field of testing equipment, specifically to a foldable multifunctional testing instrument case. Background Technology

[0002] In the field of plastic parts production and testing, tensile strength and breaking strength are core indicators for evaluating material properties and ensuring safety in use. Accurately obtaining these two test data is crucial for the quality control of plastic parts. During tensile and breaking strength tests, plastic parts are prone to generating debris, which not only contaminates the testing environment but also poses a potential threat to the personal safety of operators. Existing tensile testing equipment for plastic parts has significant shortcomings, failing to balance multifunctionality and protective performance. On the one hand, the equipment is functionally limited, mostly only capable of performing a single tensile or breaking strength test, unable to simultaneously and accurately collect both core data. Furthermore, its fixed, non-foldable structure occupies a large space and has poor adaptability to various testing scenarios. On the other hand, the protective structure design is unreasonable. While a fully enclosed structure can block debris, it prevents operators from directly observing the deformation and fracture process of the plastic part under stress, making it difficult to detect test anomalies in a timely manner, and also facilitating sample clamping. An open structure, while convenient for observation, fails to protect against debris, posing significant safety hazards. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies by providing a foldable, multifunctional testing instrument case. It is compact, easy to operate, safe, and efficient, meeting the needs for high-precision, multifunctional, and safe testing of plastic parts. At the same time, it effectively prevents debris from splashing, ensures operational safety, and facilitates intuitive observation of the testing process.

[0004] The purpose of this utility model is achieved as follows: a foldable multifunctional testing instrument case, characterized in that it comprises:

[0005] A box base with a slide rail fixed on it, and a mounting seat with a clamping component for fixing the second end of the workpiece to be tested.

[0006] The movable block is slidably fitted onto the slide rail, and a threaded sleeve is embedded thereon;

[0007] The drive screw is rotatably mounted on the housing base, threadedly engaged with the screw sleeve, and its extension direction is parallel to the slide rail;

[0008] The first base plate is fixedly connected to the movable block, and its end is provided with a lateral connecting piece, which is detachably connected to the vernier of the scale. The scale is fixedly installed on the base of the box, and the vernier slides on the scale.

[0009] The second substrate is fixedly mounted on the first substrate, and its extension direction is consistent with the slide rail. A push-pull gauge is mounted on the second substrate.

[0010] A connecting block, disposed opposite to the clamping component, is located at the front end of the push-pull gauge and is used to connect to the first end of the workpiece to be tested.

[0011] The reversing mechanism is connected to the rear end of the drive screw, and an upwardly extending operating screw is provided on it. A handwheel is provided at the upper end of the operating screw.

[0012] It has at least two sliding covers, with the lower end of each cover slidingly engaged with the base of the box, arranged in an inner and outer layer, which can slide relative to each other to achieve stacked storage or staggered opening;

[0013] The folding door is rotatably connected to the outermost sliding cover via a hinge assembly.

[0014] At least a portion of the outer surface of the sliding cover with the folding door is made of transparent material.

[0015] The housing base includes a base plate and a slide rail base connected to the base plate. The slide rail base is U-shaped, and slide rails are provided at the top of the two integrally formed side walls of the slide rail base. The cavity between the two side walls is for the reciprocating movement of the screw sleeve.

[0016] The movable block includes a body with wing plates extending to both sides. A slider is installed at the far end of the wing plate and slides with a slide rail. The body has a protrusion extending downward into the U-shaped structure of the slide rail base. The protrusion has a mounting hole and a threaded sleeve slides in the mounting hole. The outer flange of the threaded sleeve is connected to the outer end of the mounting hole by a connecting bolt.

[0017] The reversing mechanism includes a bevel gear set, and the lower end of the operating lead screw and the end of the driving lead screw are driven by the bevel gear set.

[0018] The sliding cover has three-section slide rails connected to both sides along its length. The three-section slide rails include a guide rail body, an upper rail seat, and a lower rail seat. The upper rail seat is fixedly connected to the lower edge of the sliding cover. The guide rail body is a long strip profile. Two raceways extending along the length direction are respectively provided on the upper and lower sides of the guide rail body. Each of the four raceways is filled with a number of balls. The upper rail seat and the lower rail seat are arranged opposite to each other in the vertical direction and respectively cover the outer side of the guide rail body. The raceways of the upper rail seat and the lower rail seat respectively form rolling contact with the balls in the two raceways on the corresponding side. The lower rail seat has multiple connecting holes distributed along the length direction for connecting with the base of the box.

[0019] The guide rail body of the three-section slide rail is equipped with a limiting component at its end.

[0020] The folding door is composed of two hinged door panel units, each of which is hinged to the opposite side of the sliding cover.

[0021] It also includes a locking element installed on the door panel unit, which is provided with a handle assembly.

[0022] Hinged assembly, including:

[0023] The first connecting part is fixedly installed on the sliding cover;

[0024] The second connecting part is fixedly installed on the inner side of the door panel unit, and the second connecting part is arranged opposite to the first connecting part;

[0025] The hinge shaft assembly coaxially connects the first connecting part and the second connecting part, so that the second connecting part drives the door panel unit to rotate relative to the first connecting part around the axis of the hinge shaft assembly.

[0026] The frame of the box base is formed by four profiles joined end to end to form a rectangular frame, and the vertical and top walls of the sliding cover are made of transparent material.

[0027] The above-mentioned solution offers the following advantages: Through the coordinated operation of the housing base, slide rail, movable block, drive screw, and screw sleeve, the smoothness and precision of the applied tensile force are achieved. The threaded engagement between the drive screw and the screw sleeve ensures high transmission accuracy. Combined with the sliding guide of the movable block on the slide rail, the movable block can smoothly move the relevant measuring components, ensuring uniform and controllable tensile force applied to the workpiece, thus providing a structural foundation for accurate tensile force data acquisition. Simultaneously, the clamping components on the housing base can stably clamp the second end of the workpiece to be tested. Combined with the detachable connection of the push-pull gauge's front-end connecting block to the first end of the workpiece, a secure positioning of the plastic part is achieved, preventing loosening or displacement of the workpiece during testing.

[0028] Secondly, the integrated design of the first substrate, the second substrate, the push-pull gauge, the scale, and the vernier enables the synchronous and accurate acquisition of two core data points: workpiece tension and displacement. The push-pull gauge on the second substrate can accurately measure the tension on the plastic part in real time. The connection between the lateral connector at the end of the first substrate and the scale and vernier allows for the simultaneous measurement of the displacement of the plastic part under tension. This enables the accurate calculation of key performance indicators such as the tensile strength of the plastic part. This eliminates the need for multiple devices to cooperate in the testing, significantly improving testing efficiency and avoiding errors caused by decentralized testing. It provides comprehensive and scientific data support for the evaluation of the material performance of plastic parts.

[0029] Furthermore, the design of the reversing mechanism, operating screw, and handwheel significantly improves the ease of operation of the equipment. The handwheel is located at the top of the operating screw, allowing the operator to rotate it to drive the screw synchronously via the reversing mechanism, enabling tension adjustment and application without complex operations. The reversing mechanism changes the direction of power transmission, making the handwheel's installation position more ergonomic, further enhancing operational comfort and convenience.

[0030] Finally, the structural design of at least two layers of sliding covers and folding doors achieves a perfect balance between protective performance and ease of observation, while also improving the space utilization and clamping convenience of the equipment. The inner and outer layers of sliding covers overlap and slide relative to each other. When not in use, they can be stacked for storage, providing open space for easy workpiece clamping, removal of damaged parts, and debris cleanup. During testing, they can be unfolded, working in conjunction with the opening and closing of the folding doors to effectively seal the testing space, preventing debris from scattering when plastic parts break, ensuring operator safety and a clean testing environment. Simultaneously, the outer surface of the sliding covers with folding doors is made of transparent material, allowing operators to visually observe the stress deformation and fracture process of the plastic parts while being protected. This facilitates timely detection of test anomalies and capture of critical test moments, further ensuring the controllability of the testing process and the accuracy of the data.

[0031] By observing the workpiece fracture process in real time through the transparent sliding cover, it is possible to intuitively determine whether the workpiece under test exhibits phenomena such as slippage, uneven loading, early cracking, or abnormal fracture. This facilitates the timely identification of invalid test data and ensures that the tensile and displacement test results accurately reflect the material's inherent properties. Simultaneously, by observing the fracture location, fracture morphology, and crack propagation pattern, it provides a direct basis for material performance analysis, structural optimization, and failure determination of plastic parts. The sliding cover, combined with the folding door, can be partially opened and unfolded in sections, allowing for workpiece clamping, adjustment, and reading without removing the entire protective cover. This effectively prevents debris and splashes during testing while significantly improving operational convenience.

[0032] In summary, this utility model can achieve the goals of accurate testing, convenient operation, and safe protection, fully meeting the high-precision, multi-functional, and safe testing needs of plastic parts in modern industrial production.

[0033] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the structure of this utility model;

[0035] Figure 2 This is a schematic diagram of the slide rail base.

[0036] Figure 3 for Figure 2 Sectional view of AA;

[0037] Figure 4 A schematic diagram of the three-section slide rail arrangement structure;

[0038] In the attached diagram, 100 is the base of the housing; 120 is the bottom plate; 130 is the slide rail base; 131 is the side wall; 132 is the slide rail; 133 is the cavity; 210 is the threaded sleeve; 211 is the outward flange; 220 is the drive screw; 300 is the clamping component; 310 is the first base plate; 320 is the lateral connecting component; 330 is the second base plate; 340 is the push-pull gauge; 341 is the connecting block; 400 is the movable block; 410 is the body; 420 is the wing plate; 430 is the slider; 440 is the protrusion; 441 is the mounting hole; 500 is... Scale; 510 Vernier; 600 Reversing mechanism; 610 Bevel gear set; 620 Operating screw; 630 Handwheel; 700 Workpiece to be inspected; 800 Sliding cover; 820 Three-section slide rail; 821 Guide rail body; 822 Upper rail seat; 823 Lower rail seat; 826 Ball bearing; 830 Vertical wall; 831 Limiting assembly; 840 Top wall; 900 Folding door body; 910 Hinge assembly; 920 Door panel unit; 911 First connecting part; 912 Second connecting part. Detailed Implementation

[0039] Referring to the accompanying drawings, the specific embodiments of this utility model will be described in detail.

[0040] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0041] In the description of this application, it should be understood that the terms center, upper, lower, front, back, left, right, vertical, horizontal, top, bottom, inner, and outer, indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. In the description of this application, the terms first and second are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined as first and second can be used to explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, multiple means two or more. It should be noted that in practical applications, due to limitations in equipment accuracy or installation errors, absolute parallelism or perpendicularity is difficult to achieve. The descriptions of vertical, parallel, or unidirectional in this application are not absolute limitations, but rather indicate that vertical or parallel structural settings can be achieved within a preset error range, and the corresponding preset effects can be achieved. In this way, the technical effects of the defined features can be maximized, and the corresponding technical solutions can be easily implemented, thus having high feasibility.

[0042] In the description of this specification, the references to the terms "an embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0043] See Figure 1-4 An embodiment of a foldable multifunctional testing instrument case includes a case base 100, a movable block 400, a drive screw 220, a first base plate 310, a second base plate 330, a reversing mechanism 600, a handwheel 630, at least two sliding covers 800, and a folding door 900.

[0044] The base 100 serves as the mounting foundation for the entire instrument case. Its frame is a rectangular frame formed by four profiles joined end-to-end. A slide rail 132 is fixed on it. The base 100 also has a mounting seat with a clamping component 300 for securing the second end of the workpiece 700 to be tested. The clamping component 300 ensures a secure clamping of the second end of the workpiece 700, preventing loosening or displacement during testing and ensuring test stability. The clamping component can be a chuck or a connecting bolt mounted on the base.

[0045] The movable block 400 is slidably fitted onto the slide rail, allowing it to slide smoothly back and forth along the extension direction of the slide rail. A threaded sleeve 210 is embedded in the movable block 400, and the threaded sleeve 210 is fixedly connected to the movable block 400 and moves synchronously with the movable block 400. The drive screw 220 is rotatably mounted on the housing base 100, and its extension direction is parallel to the extension direction of the slide rail. The drive screw 220 and the threaded sleeve 210 are threadedly engaged, forming a screw-nut transmission mechanism. By rotating the drive screw 220, the threaded sleeve 210 and the movable block 400 can be driven to move smoothly along the slide rail, thereby achieving the smooth application of tension.

[0046] The first substrate 310 is fixedly connected to the movable block 400 and moves synchronously with the movable block 400. A lateral connector 320 is provided at the end of the first substrate 310. The lateral connector 320 is connected to the vernier 510 of the scale 500. When the movable block 400 moves, it can drive the vernier 510 to move synchronously along the scale 500, so as to realize the accurate measurement of the displacement of the workpiece 700 to be tested.

[0047] The second substrate 330 is fixedly mounted on the first substrate 310, and its extension direction is consistent with the extension direction of the slide rail. A push-pull gauge 340 is fixedly mounted on the second substrate 330. The push-pull gauge 340 is used to detect the magnitude of the tension force on the workpiece 700 to be tested in real time. A connecting block 341 is provided at the front end of the push-pull gauge 340, which is opposite to the clamping member 300. The connecting block 341 adopts a detachable connection method and is connected to the first end of the workpiece 700 to be tested, so as to realize the reliable connection between the push-pull gauge 340 and the workpiece and ensure that the tension force can be accurately transmitted to the push-pull gauge 340.

[0048] The reversing mechanism 600 is connected to the rear end of the drive screw 220 to change the direction of power transmission. The reversing mechanism 600 is equipped with an upwardly extending operating screw 620. A handwheel 630 is fixedly installed at the upper end of the operating screw 620. By rotating the handwheel 630, the operator can drive the operating screw 620 to rotate. The operating screw 620 drives the drive screw 220 to rotate synchronously through the reversing mechanism 600, thereby realizing the movement of the movable block 400 and the adjustment of the tension. The operation is convenient and labor-saving.

[0049] The sliding cover 800 has at least two layers, with each layer of sliding cover 800 arranged in an inner and outer stacked manner. The lower end of each sliding cover 800 is slidably engaged with the box base 100, and can slide relative to the box base 100 and adjacent sliding covers 800, so as to achieve stacking and storage or staggered opening. In the non-testing state, each layer of sliding cover 800 is stacked and stored. In the testing state, each layer of sliding cover 800 is staggered and opened to form a closed testing space to protect the testing process.

[0050] The folding door 900 is rotatably connected to the outermost sliding cover 800 via a hinge assembly 910. The folding door 900 is assembled by hinges and can be folded and unfolded around the hinge axis. During testing, the folding door 900 unfolds, closing the openings of each sliding cover 800 to prevent debris from scattering when the plastic parts break. When operating or handling workpieces, the folding door 900 folds and unfolds, facilitating clamping or removal of any remaining parts after testing. At least a portion of the outer surface of the sliding cover 800, where the folding door 900 is mounted, is made of transparent material. This allows operators to visually observe the stress deformation and fracture of the plastic parts during testing, facilitating timely detection of test anomalies and ensuring the smooth progress of the test.

[0051] In this embodiment, the push-pull gauge 340 is a digital push-pull force gauge, which may include a high-precision tension sensor, a digital display module, a data storage unit, and operation buttons. Its accuracy level is not less than 0.5, and it can accurately capture tension changes within the range of 0 to 500N, ensuring the accuracy of the test data. The mounting holes of the push-pull gauge 340 are detachably fixed to the second base plate 330 via bolt connections.

[0052] Of course, a mounting groove matching the tail of the push-pull gauge 340 can also be opened on the second substrate 330. The groove has a pre-set threaded hole. After the push-pull gauge 340 fits into the mounting groove, it is locked to the threaded hole of the second substrate by 2 to 4 hexagonal bolts to achieve a firm installation of the push-pull gauge 340, further avoiding displacement or shaking of the push-pull gauge 340 due to the application of tension during the test.

[0053] The front end of the push-pull gauge 340 is provided with a quick-release connecting block 341. The connecting block 341 is detachably connected to the force measuring end of the push-pull gauge 340 by a thread. The first end of the workpiece 700 to be tested is fixed to the connecting block 341 by bolts, buckles or clamping structures to ensure that the pulling force can be accurately transmitted to the sensor of the push-pull gauge 340 through the connecting block 341, and to avoid data deviation caused by loose connection.

[0054] In this embodiment, the scale 500 can be a high-precision vernier caliper or a digital electronic scale, working in conjunction with the push-pull gauge 340 to achieve accurate measurement of displacement data. The scale 500 is a long, straight ruler structure, with a length adapted to the maximum displacement test range of the workpiece 700 to be tested. When using a mechanical scale, the scale accuracy is 0.01mm, and the scale is clear and wear-resistant. When using a digital electronic scale, it has a built-in digital display module and displacement sensor, which can directly display the displacement value digitally, making the reading more intuitive and efficient. The scale 500 is fixedly installed on the housing base 100, and its extension direction is parallel to the slide rail 132. The vernier 510 slides on the scale 500 and is fixedly connected to the first base plate 310 through the lateral connector 320, moving synchronously with the first base plate 310 to achieve accurate measurement of the displacement of the workpiece 700 to be tested.

[0055] Specifically, when a mechanical scale is used, the vernier 510 of the scale 500 is detachably connected to the lateral connector 320 via a snap-fit ​​connection structure; when a digital scale is used, its reading head is directly and securely connected to the lateral connector 320, moving synchronously with the movable block 400, and acquiring and digitally outputting displacement signals in real time. When the movable block 400 moves along the slide rail, it drives the first base plate 310 and the lateral connector 320 to move synchronously, thereby driving the vernier 510 or the digital reading head to move along the length direction of the scale 500, realizing real-time and accurate measurement of the displacement of the workpiece 700 to be inspected.

[0056] The tensile force data of the push-pull gauge 340 and the displacement data of the scale 500 are collected synchronously. Operators can read the real-time tensile force through the display module of the push-pull gauge 340 and read the corresponding displacement directly through the mechanical scale or the digital scale. By combining the data of the two, the tensile force-displacement curve, tensile strength and elastic modulus of the workpiece under test can be accurately calculated, providing comprehensive and reliable data support for the performance evaluation of plastic parts.

[0057] In some embodiments, the housing base 100 includes a base plate 120 and a slide rail base 130 connected to the base plate 120. The base plate is connected to a rectangular frame. The slide rail base 130 has a U-shaped structure. The top of its integrally formed two side walls 131 are provided with slide rails 132. The slide rails 132 cooperate with the movable block 400 to provide guidance for the sliding of the movable block 400. A cavity 133 is formed between the two side walls 131. The cavity 133 provides clearance space for the reciprocating movement of the screw sleeve 210 to avoid interference between the screw sleeve 210 and the slide rail base 130 when the screw sleeve 210 moves.

[0058] The bottom of the slide rail base 130 is provided with a T-slot, which extends along the length of the slide rail base 130. The connecting bolt is installed in the T-slot and is threadedly connected to the mounting hole on the base plate 120 to achieve a fixed connection between the slide rail base 130 and the base plate 120. At the same time, the T-slot can facilitate the adjustment of the installation position of the slide rail base 130 on the base plate 120, ensuring that the position of the slide rail base 130 corresponds to that of the slide rail and guaranteeing transmission accuracy.

[0059] In some embodiments, the movable block 400 includes a body 410, with two sides of the body 410 extending outward to form wing plates 420. A slider 430 is mounted at the distal end of the wing plate 420. The slider 430 slides in cooperation with the slide rail 132 at the top of the side walls 131 of the slide rail base 130, providing precise guidance for the sliding of the movable block 400, ensuring that the movable block 400 moves smoothly along the slide rail and avoiding deviation.

[0060] The bottom of the body 410 is provided with a downwardly extending protrusion 440, which extends into the U-shaped cavity 133 of the slide rail base 130. The protrusion 440 is provided with a mounting hole 441, and the threaded sleeve 210 is slidably fitted in the mounting hole 441 to realize the assembly of the threaded sleeve 210 and the movable block 400. The outer flange 211 of the threaded sleeve 210 is fixedly connected to the outer end of the mounting hole 441 to realize the fixation of the threaded sleeve 210 and the movable block 400, prevent the threaded sleeve 210 from falling out of the mounting hole 441, and ensure the stability of the screw nut transmission mechanism.

[0061] In some embodiments, the reversing mechanism 600 includes a bevel gear set 610, which consists of two meshing bevel gears. One bevel gear is fixedly connected to the end of the drive screw 220, and the other bevel gear is fixedly connected to the lower end of the operating screw 620. Through the meshing transmission of the two bevel gears, the power transmission between the operating screw 620 and the drive screw 220 is realized, and the transmission direction of the power is changed, so that the vertical rotation of the operating screw 620 is converted into the horizontal rotation of the drive screw 220, thereby driving the movable block 400 to move along the slide rail. The structure is compact and the transmission is reliable.

[0062] In some embodiments, the sliding cover 800 is connected to two sides along its length by a three-section slide rail 820. The three-section slide rail 820 includes a guide rail body 821, an upper rail seat 822, and a lower rail seat 823. The upper rail seat 822 is fixedly connected to the lower edge of the sliding cover 800, thereby realizing the sliding connection between the sliding cover 800 and the box base 100.

[0063] The guide rail body 821 is a long strip profile. Two raceways extending along the length are respectively provided on the upper and lower sides of the guide rail body 821. Each of the four raceways is filled with several balls 826, which are used to reduce sliding friction. The upper rail seat 822 and the lower rail seat 823 are arranged opposite each other in the vertical direction, respectively covering the outer side of the guide rail body 821. The raceways on the upper rail seat 822 and the lower rail seat 823 form rolling contact with the balls 826 in the two raceways on the corresponding sides. The two rail seats can independently reciprocate along the length of the guide rail body 821, realizing the extension and retraction of the three-section slide rail 820, thereby driving the sliding cover 800 to be stacked for storage or staggered for unfolding.

[0064] The lower rail base 823 has multiple connecting holes distributed along its length for connecting with the base of the housing, ensuring the installation stability of the lower rail base 823 and preventing shaking during sliding.

[0065] Furthermore, the guide rail body 821 of the three-section slide rail 820 is provided with a limiting component 831 at its end, which limits the extension distance of the slide rail.

[0066] In some embodiments, the folding door 900 is composed of two hinged door panel units 920, each door panel unit 920 being hinged to the opposite side of the sliding cover 800; the door panel unit 920 and the sliding cover 800 are hinged by a hinge assembly, and the door panel unit 920 can rotate around the hinge axis to realize the opening and closing of the opening.

[0067] The locking element is installed on the door panel unit 920. When the door panel unit 920 is closed, the locking element locks the door panel unit 920 and the sliding cover 800 together to prevent the door panel unit 920 from being opened accidentally. It can be a magnetic buckle, etc. Of course, the magnetic buckle part can also be installed on different door panel units 920 respectively. When closed, the two door panel units 920 can remain in a normally closed state.

[0068] In some embodiments, the hinge assembly includes a first connecting portion 911, a second connecting portion 912, and a hinge shaft assembly.

[0069] The first connecting part 911 is fixedly installed on the sliding cover 800.

[0070] The second connecting part 912 is fixedly installed on the inner side of the door panel unit 920, and the second connecting part 912 is arranged opposite to the first connecting part 911; the hinge shaft assembly coaxially connects the first connecting part 911 and the second connecting part 912, so that the second connecting part 912 can drive the door panel unit 920 to rotate relative to the first connecting part 911 around the axis of the hinge shaft assembly, thereby realizing the opening and closing of the door panel unit 920.

[0071] In some embodiments, the vertical wall 830 and the top wall 840 of the sliding cover 800 are both made of transparent material. The transparent material allows for comprehensive and intuitive observation of the testing process. Operators can clearly see the stress deformation, displacement changes and fracture moment of the workpiece 700 under tension, which facilitates timely detection of test abnormalities. At the same time, it does not affect the protective function of the sliding cover 800 and can effectively prevent the debris from splashing when the plastic part breaks, thus balancing the convenience of observation and the reliability of protection.

[0072] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations of this utility model fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A foldable multifunctional testing instrument case, characterized in that, include: A box base (100) is fixed with a slide rail (132). The box base (100) is also provided with a mounting seat, and the mounting seat is provided with a clamping part (300) for fixing the second end of the workpiece (700) to be tested. The movable block (400) is slidably fitted to the slide rail (132), and a threaded sleeve (210) is embedded thereon. The drive screw (220) is rotatably mounted on the housing base (100), threadedly engaged with the screw sleeve (210), and its extension direction is parallel to the slide rail (132); The first base plate (310) is fixedly connected to the movable block (400), and its end is provided with a lateral connector (320) which is detachably connected to the vernier (510) of the scale (500). The scale (500) is fixedly installed on the base of the box (100), and the vernier (510) is slidably engaged with the scale (500). The second substrate (330) is fixedly mounted on the first substrate (310), and its extension direction is consistent with the slide rail (132). A push-pull gauge (340) is installed on the second substrate (330). A connecting block (341) is disposed opposite to the clamping member (300) at the front end of the push-pull gauge (340) and is used to connect to the first end of the workpiece (700) to be tested; The reversing mechanism (600) is connected to the rear end of the drive screw (220) and has an upwardly extending operating screw (620) on it. A handwheel (630) is provided at the upper end of the operating screw (620). At least two sliding covers (800), the lower end of each sliding cover (800) is slidably engaged with the base (100) of the box, arranged in an inner and outer layer, which can slide relative to each other to achieve stacking and storage or staggered opening; The folding door (900) is rotatably connected to the outermost sliding cover (800) via a hinge assembly (910); At least a portion of the outer surface of the sliding cover (800) equipped with the folding door body (900) is made of transparent material.

2. The foldable multifunctional testing instrument case according to claim 1, characterized in that, The housing base (100) includes a base plate (120) and a slide rail base (130) connected to the base plate (120). The slide rail base (130) is U-shaped. The top of the two integrally formed side walls (131) of the slide rail base (130) is provided with slide rails (132). The cavity (133) between the two side walls (131) is used for the reciprocating movement of the screw sleeve (210).

3. The foldable multifunctional testing instrument case according to claim 2, characterized in that, The movable block (400) includes a body (410), the body (410) having wing plates (420) extending to both sides, a slider (430) being mounted at the far end of the wing plate (420), the slider (430) being slidably engaged with the slide rail (132), the body (410) having a protrusion (440) extending downward into the slide rail base (130) with a U-shaped structure, the protrusion (440) having a mounting hole (441), a threaded sleeve (210) being slidably engaged in the mounting hole (441), the outer flange (211) of the threaded sleeve (210) being connected to the outer end of the mounting hole (441) by a connecting bolt.

4. The foldable multifunctional testing instrument case according to claim 1, characterized in that, The reversing mechanism (600) includes a bevel gear set (610), and the lower end of the operating screw (620) and the end of the driving screw (220) are driven by meshing through the bevel gear set (610).

5. The foldable multifunctional testing instrument case according to claim 1, characterized in that, The sliding cover (800) has three-section slide rails (820) connected to both sides along its length. The three-section slide rails (820) include a guide rail body (821), an upper rail seat (822), and a lower rail seat (823). The upper rail seat (822) is fixedly connected to the lower edge of the sliding cover (800). The guide rail body (821) is a long strip profile, and two rollers extending along its length are respectively provided on the upper and lower sides of the guide rail body (821). Each of the four raceways is filled with a number of balls (826); the upper rail seat (822) and the lower rail seat (823) are arranged opposite each other in the vertical direction and respectively cover the outside of the guide rail body (821). The raceways of the upper rail seat (822) and the lower rail seat (823) respectively form rolling contact with the balls (826) in the two raceways on the corresponding side. The lower rail seat (823) has a number of connecting holes distributed along the length direction for connecting with the housing base (100).

6. The foldable multifunctional testing instrument case according to claim 5, characterized in that, The guide rail body (821) of the three-section slide rail (820) is provided with a limiting component (831) at the end.

7. The foldable multifunctional testing instrument case according to claim 1, characterized in that, The folding door (900) is composed of two hinged door panel units (920), each door panel unit (920) being hinged to the opposite side of the sliding cover (800); It also includes a locking element installed on a door panel unit (920), which is provided with a handle assembly.

8. The foldable multifunctional testing instrument case according to claim 7, characterized in that, The hinge assembly (910) includes: The first connecting part (911) is fixedly installed on the sliding cover (800). The second connecting part (912) is fixedly installed on the inner side of the door panel unit (920), and the second connecting part (912) is arranged opposite to the first connecting part (911); The hinge shaft assembly coaxially connects the first connecting part (911) and the second connecting part (912), so that the second connecting part (912) drives the door panel unit (920) to rotate relative to the first connecting part (911) around the axis of the hinge shaft assembly.

9. The foldable multifunctional testing instrument case according to claim 1, characterized in that, The frame of the box base (100) is formed by four profiles joined end to end to form a rectangular frame, and the vertical wall (830) and top wall (840) of the sliding cover (800) are both made of transparent material.

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