Detection instrument pull-out cover

Abstract

The utility model discloses detection instrument draws and pulls flip cover, including instrument casing, back cover and plug screw, instrument casing is provided with two recesses on, be provided with the lug on the back cover, the inside of recess is provided with the screw hole, the track groove of racecourse type is established in the lug, plug screw is connected with the screw thread of track groove and screw hole, the lug is under the location effect of plug screw and is slid with recess adaptation, be provided with the turnover limiting component on the back cover. The utility model discloses the round lug of track shape realized first pull and then rotate, avoided the interference between the screw and instrument casing that do not loosen, when the back cover is turned over to a certain angle upward, the protruding portion in positioning assembly just is connected to the inside of positioning hole, and the back cover can keep the turnover state when the maintenance personnel loosen, and it is convenient to overhaul the inside, and then the protruding portion in the inside of positioning hole is unlocked through unlocking assembly, and the back cover reset can be realized.

Description

Technical Field

[0001] This utility model relates to the field of testing instrument technology, and in particular to a pull-out flip cover for a testing instrument. Background Technology

[0002] Detection devices are core tools in industrial production and scientific research, responsible for real-time monitoring of parameters such as temperature, pressure, and concentration. Through the collaborative work of sensors, signal processing modules, and data analysis units, they transform physical signals into quantitative data, providing support for production optimization, fault early warning, and quality control. In fields such as intelligent manufacturing and environmental monitoring, their accuracy directly impacts system safety and efficiency. The design integrates materials science, electronic engineering, and algorithm technologies; for example, corrosion-resistant sensors are adapted to chemical environments, and adaptive algorithms improve signal recognition in complex environments, demonstrating the characteristics of technology integration and scenario adaptation.

[0003] The testing equipment requires regular maintenance to maintain its performance. During long-term operation, sensor sensitivity may decrease due to material fatigue or environmental corrosion, mechanical parts may wear down due to vibration, and electronic components may experience parameter drift due to temperature and humidity fluctuations. Without maintenance, these latent changes can accumulate, leading to increased measurement errors, response delays, or false alarms. For example, condensation on sensors in high-temperature and high-humidity environments can affect insulation, and loose connections in high-frequency vibration scenarios can cause signal interference. Quarterly or semi-annual maintenance, including cleaning, calibration, component replacement, and software updates, can restore initial performance, prevent malfunctions, and ensure consistently accurate test results and consistent system operation.

[0004] Patent document CN214585212U discloses a portable ammonia nitrogen detector, including a shell, a fixing structure to prevent shaking, a push-out structure for easy use, and a pull-out structure for easy operation. The detector is housed inside the shell, and a sealing door is installed at the bottom of the shell via a hinge. The fixing structure is located on both sides inside the shell. A partition is installed between the inner walls of the shell on both sides above the detector, and the push-out structure is located at the top of the partition. A first slot is formed in the center of the interior of one end of the shell, and a fixed glass plate is installed at the top of the first slot. The pull-out structure is located inside the first slot. This invention allows the detector to be quickly pushed out of the shell by pressing a pressure plate, causing an extension rod to move and pushing a push plate while simultaneously deforming a buffer spring. This structure helps reduce the workload of workers.

[0005] As with the prior art of the aforementioned patent, in the actual application scenarios of various testing devices, when it is necessary to open the outer casing for inspection and maintenance, there is generally a problem of cumbersome operation procedures. Maintenance personnel usually need to first remove the fixing screws one by one, and then remove the entire outer casing and place it next to the workbench. When reinstalling after completing the internal inspection, it is necessary to perform a two-handed operation at the same time: one hand needs to hold the outer casing continuously to keep it vertical and stable to prevent it from slipping and bumping, and the other hand needs to precisely tighten the screws to ensure a sealed connection between the outer casing and the main body. This inspection method not only greatly prolongs the single inspection time due to the need for two-handed cooperation and reduces the equipment maintenance efficiency in the production process, but may also cause the disassembled parts to be lost. Utility Model Content

[0006] The purpose of this invention is to provide a pull-out flip cover for a testing instrument to address the aforementioned shortcomings in the prior art.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a pull-out flip cover for a testing instrument, comprising an instrument housing, a back cover, and a screw threaded onto the cover. The instrument housing has two grooves, and the back cover has a lifting lug. A screw hole is provided inside the groove, and a racetrack-shaped track groove is provided at the lifting lug. The screw threaded onto the track groove is threaded into the screw hole. The lifting lug slides and adapts to the groove under the limiting action of the screw threaded onto the cover. A flip-out limiting component is provided on the back cover, and a positioning component is provided between the lifting lug and the groove.

[0008] As a further description of the above technical solution: the flip-limiting assembly includes four non-removable screws at the four corners of the rear cover, each of the four non-removable screws having a plug-in portion at its end, and four plug-in holes at the four corners of the joint between the instrument housing and the rear cover, the four plug-in holes and the four plug-in portions being mutually compatible.

[0009] As a further description of the above technical solution: the positioning component includes a protrusion that is elastically installed inside the groove, and the lifting lug is provided with a positioning hole that is adapted to the protrusion.

[0010] As a further description of the above technical solution: an embedding groove is provided at the position of the two protrusions, the two protrusions are slidably installed inside the embedding groove, and a spring is provided inside the embedding groove, with the two ends of the spring being fixedly connected to the embedding groove and the protrusion respectively.

[0011] As a further description of the above technical solution: an unlocking component is provided between the instrument housing and the two protrusions for unlocking the connection between the protrusions and the positioning holes.

[0012] As a further description of the above technical solution: the unlocking component includes a rotating part that is rotatably installed inside the cavity of the instrument housing, and traction cables are fixedly connected to both sides of the rotating part, with the two traction cables respectively fixedly connected to the protrusion.

[0013] This utility model provides a pull-out flip cover for a testing instrument. It offers the following advantages: the track-shaped circular lugs allow for pull-out followed by rotation, avoiding interference between loose screws and the instrument housing. When the back cover flips upwards to a certain angle, the protrusion in the positioning component engages precisely with the inside of the positioning hole. Maintenance personnel can easily release the protrusion to keep the back cover flipped, facilitating internal inspection. The back cover can then be reset by unlocking the protrusion inside the positioning hole using the unlocking component.

[0014] It should be understood that the foregoing general description and the following detailed description are exemplary and illustrative only, and are not intended to limit this disclosure.

[0015] This application provides an overview of various implementations or examples of the technology described in this disclosure, and is not a full disclosure of the entire scope or all features of the disclosed technology. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the pull-out flip cover of the testing instrument proposed in this utility model;

[0017] Figure 2 This is a three-dimensional structural diagram of the outward-pulling rear cover of this utility model;

[0018] Figure 3 This utility model Figure 2 A magnified structural diagram at point A;

[0019] Figure 4 This is a three-dimensional structural diagram of the present invention when the back cover is flipped upwards and positioned.

[0020] Figure 5 This is a three-dimensional structural diagram of the back cover of this utility model;

[0021] Figure 6 This is a three-dimensional exploded structural diagram of the present invention;

[0022] Figure 7 This is a three-dimensional structural diagram of the unlocking component of this utility model.

[0023] Legend:

[0024] 1. Instrument housing; 2. Back cover; 3. Locking screw; 4. Plug hole; 5. Plug part; 6. Lifting lug; 7. Groove; 8. Screw hole; 9. Plug screw; 10. Protrusion; 11. Positioning hole; 12. Track groove; 13. Embedded groove; 14. Spring; 15. Rotating component; 16. Traction cable. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0026] Reference Figure 1-7 The testing instrument has a pull-out flip cover, including an instrument housing 1, a back cover 2, and a screw 9. The instrument housing 1 has two grooves 7, and the back cover 2 has a lifting lug 6. The grooves 7 have screw holes 8 inside, and the lifting lug 6 has a racetrack-shaped track groove 12. The screw 9 passes through the track groove 12 and is threadedly connected to the screw hole 8. The lifting lug 6 slides and adapts to the groove 7 under the limiting action of the screw 9. The back cover 2 is provided with a flip-out limiting component, and a positioning component is provided between the lifting lug 6 and the groove 7. Pull out the back cover 2 so that the lug 6 slides on the groove 7 a certain distance, that is, when the screw 9 contacts the end of the track groove 12 near the instrument housing 1, the flip-limit component is released, and the back cover 2 can be flipped upward. When the back cover 2 is flipped upward to a certain angle, the protrusion 10 in the positioning component is just locked into the inside of the positioning hole 11. The maintenance personnel can release the hand to keep the back cover 2 in the flipped state, which is convenient for internal maintenance. The protrusion 10 inside the positioning hole 11 can be unlocked by the unlocking component later.

[0027] As a preferred technical solution of this embodiment, the flip-limiting component includes four non-removable screws 3 disposed at the four corners of the rear cover 2. Each of the four non-removable screws 3 has a plug-in part 5 at its end. Four plug-in holes 4 are respectively disposed at the four corners where the instrument housing 1 and the rear cover 2 meet. The four plug-in holes 4 and the four plug-in parts 5 are mutually adapted. Through the connection between the plug-in part 5 and the plug-in hole 4, the rotation of the rear cover 2 can be prevented when the rear cover 2 is pulled or caused by non-human factors. The plug-in part 5 is normally inserted into the interior of the plug-in hole 4. The interior of the plug-in hole 4 is provided with a magnetic layer. The magnetic layer is composed of a strong permanent magnet material, which can make the instrument housing 1 and the rear cover 2 in close contact without loosening. When maintenance is required, the rear cover 2 is pulled out a certain distance so that the plug-in part 5 leaves the plug-in slot, thereby unlocking the flip-limiting component and allowing the rear cover 2 to be flipped.

[0028] As a preferred technical solution of this embodiment, the positioning component includes a protrusion 10 that is elastically installed inside the groove 7, and the lifting lug 6 is provided with a positioning hole 11 that is adapted to the protrusion 10; when the back cover 2 is flipped to a certain position, the protrusion 10 can be engaged inside the positioning hole 11, thereby realizing the suspension and fixation of the back cover 2.

[0029] As a preferred technical solution of this embodiment, an embedding groove 13 is provided at the position of the two protrusions 10. The two protrusions 10 are slidably installed inside the embedding groove 13. A spring 14 is provided inside the embedding groove 13. The two ends of the spring 14 are fixedly connected to the embedding groove 13 and the protrusion 10 respectively. The protrusion 10 is elastically connected to the embedding groove 13 through the spring 14. The protrusion 10 pops out under the action of the spring 14, so that it can be locked inside the positioning hole 11.

[0030] As a preferred technical solution of this embodiment, an unlocking component is provided between the instrument housing 1 and the two protrusions 10 for unlocking the connection between the protrusions 10 and the positioning hole 11; when it is necessary to close the rear cover 2, the connection between the protrusions 10 and the positioning hole 11 can be released by the unlocking component, thereby realizing the rear cover 2 flipping down and resetting.

[0031] As a preferred technical solution of this embodiment, the unlocking component includes a rotating member 15 rotatably installed inside the cavity of the instrument housing 1. The rotating member 15 is fixedly connected to two traction cables 16 on both sides, and the two traction cables 16 are respectively fixedly connected to the protrusions 10. By rotating the rotating member 15, the traction cables 16 on both sides can be pulled, so that the traction cables 16 respectively pull the protrusions 10 provided on the embedding groove 13 into the embedding groove 13, so that the protrusions 10 leave the positioning hole 11. Only after the protrusions 10 leave the positioning hole 11 can the rear cover 2 be flipped down and reset.

[0032] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A pull-out flip-top cover for a testing instrument, comprising an instrument housing (1), a rear cover (2), and a locking screw (9), characterized in that, The instrument housing (1) has two grooves (7), the rear cover (2) has a lifting lug (6), the groove (7) has a screw hole (8) inside, the lifting lug (6) has a racetrack-shaped track groove (12), the plug screw (9) passes through the track groove (12) and is threaded to the screw hole (8), the lifting lug (6) slides and adapts to the groove (7) under the limiting action of the plug screw (9), the rear cover (2) has a flip-limiting component, and a positioning component is provided between the lifting lug (6) and the groove (7).

2. The pull-out flip cover of the testing instrument according to claim 1, characterized in that, The flip-limiting assembly includes four non-removable screws (3) set at the four corners of the rear cover (2). Each of the four non-removable screws (3) has a plug-in part (5) at its end. The four corners of the joint between the instrument housing (1) and the rear cover (2) are respectively provided with four plug-in holes (4). The four plug-in holes (4) and the four plug-in parts (5) are mutually compatible.

3. The pull-out flip cover of the testing instrument according to claim 1, characterized in that, The positioning component includes a protrusion (10) that is elastically installed inside the groove (7), and the lug (6) is provided with a positioning hole (11) that is compatible with the protrusion (10).

4. The pull-out flip cover of the testing instrument according to claim 3, characterized in that, An embedding groove (13) is provided at the position of the two protrusions (10). The two protrusions (10) are slidably installed inside the embedding groove (13). A spring (14) is provided inside the embedding groove (13). The two ends of the spring (14) are fixedly connected to the embedding groove (13) and the protrusion (10) respectively.

5. The pull-out flip cover of the testing instrument according to claim 1, characterized in that, An unlocking assembly is provided between the instrument housing (1) and the two protrusions (10) for unlocking the connection between the protrusions (10) and the positioning hole (11).

6. The pull-out flip cover of the testing instrument according to claim 5, characterized in that, The unlocking assembly includes a rotating component (15) that is rotatably installed inside the cavity of the instrument housing (1). Traction cables (16) are fixedly connected to both sides of the rotating component (15), and the two traction cables (16) are respectively fixedly connected to the protrusion (10).

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