A portable data acquisition instrument

Abstract

The utility model relates to data acquisition technical field discloses a kind of portable data acquisition instrument, including data acquisition instrument body and portable power supply, data acquisition instrument body back is equipped with mounting box, and plug-in slot is opened in mounting box, and lock catch assembly is equipped between portable power supply and mounting box;Plug-in slot side wall is equipped with mounting groove along horizontal direction, lock catch assembly is located in mounting groove, and lock catch assembly includes lock bar and first spring, and one end of first spring is connected with mounting groove side wall, and other end is connected with one end of lock bar, lock bar and mounting groove sliding fit, other end of lock bar extends outside mounting groove and is contacted with portable power supply outer side wall, and the outer side wall of portable power supply is equipped with clamping groove;Control assembly is provided on mounting box.Solve the problem that portable data acquisition instrument is inconvenient to charge in long time field operation in prior art.

Description

Technical Field

[0001] This utility model relates to the field of data acquisition technology, specifically to a portable data acquisition instrument. Background Technology

[0002] Portable data acquisition devices are lightweight equipment that integrates data acquisition, storage, and transmission, suitable for industrial inspection, environmental monitoring, and mobile inspection scenarios. Their core advantages lie in their small size and light weight, support for multi-channel signal input, and anti-interference and insulation design. They are battery-powered terminal computer devices capable of offline operation, featuring real-time acquisition, automatic storage, instant display, instant feedback, automatic processing, and automatic transmission, ensuring the authenticity, validity, real-time performance, and availability of on-site data.

[0003] Existing portable data acquisition devices can be charged by power banks, enabling them to support long-term field operations. However, existing portable data acquisition devices lack a device to secure the power bank, requiring users to hold both the portable data acquisition device and the power bank simultaneously, causing inconvenience. Utility Model Content

[0004] The purpose of this utility model is to provide a portable data acquisition instrument to solve the problem of inconvenience in charging portable data acquisition instruments with mobile power supplies during long-term field operations in the prior art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A portable data acquisition instrument includes a data acquisition instrument body and a power supply. The back of the data acquisition instrument body is provided with a mounting box. The mounting box has a plug slot for inserting the power supply. A locking assembly is provided between the power supply and the mounting box. The side wall of the plug slot is provided with an installation groove in the horizontal direction. The locking assembly is located in the installation groove. The locking assembly includes a locking rod and a first spring. One end of the first spring is connected to the side wall of the installation groove, and the other end is connected to one end of the locking rod. The locking rod is slidably engaged with the installation groove. The other end of the locking rod extends out of the installation groove and contacts the outer wall of the power bank. The outer wall of the power bank is provided with a slot that engages with the locking rod. The mounting box is equipped with a control component for controlling the position of the locking lever.

[0006] Furthermore, there are two card slots, which are symmetrically distributed on the left and right sides of the power bank, and two locking components and two mounting slots are respectively provided for each card slot.

[0007] Furthermore, the mounting box has a cavity on one side of the locking rod, and an arc-shaped spring is provided in the cavity. A crossbar is fixed on the locking rod. The interior of the mounting box has an elongated through groove along the axial direction of the locking rod for the crossbar to pass through, and the fixed position of the crossbar is adjustable. The elongated through groove connects the cavity and the mounting groove. The two ends of the arc-shaped spring are fixedly connected to the ends of the two crossbars respectively.

[0008] Furthermore, the control component includes a pressing rod and a second spring. The top wall of the cavity has a through hole that penetrates the top of the mounting box. The pressing rod is movably inserted into the through hole. The bottom end of the pressing rod is fixedly connected to the top of the arc-shaped spring piece, and the top end protrudes outside the mounting box. The mounting box has a mounting cavity on the outside of the pressing rod. A fixing ring is fixedly sleeved on the pressing rod. The fixing ring and the second spring are both located inside the mounting cavity. The second spring is sleeved on the pressing rod. One end of the second spring is connected to the fixing ring, and the other end is connected to the inner wall of the mounting cavity. The second spring makes the pressing rod tend to protrude out of the mounting box.

[0009] Furthermore, the locking rod has a pressing bevel near the insertion slot for pressing against the power bank, and the power bank has an arc-shaped chamfered structure at its bottom.

[0010] Furthermore, the bottom wall of the insertion slot is provided with a pop-out component, which includes a movable block and a third spring. One end of the third spring is fixed to the bottom of the insertion slot, and the other end is fixed to the bottom of the movable block. The movable block can slide within the insertion slot.

[0011] Furthermore, the data acquisition instrument body has symmetrical storage slots on both sides of the back side, and a support component is provided on the back side of the data acquisition instrument body for each storage slot. The support component has an unfolded state and a retracted state, and the support component can be stored in the corresponding storage slot. The data acquisition instrument body has a control box fixedly installed at the bottom. The support assembly includes a support plate and a telescopic support rod. A pin is provided between the support plate and the control box. The support plate is rotatably mounted on the control box through the pin. The support plate is adapted to the storage slot. The inner wall of the storage slot has a groove, and the telescopic support rod is hinged between the inner walls of the groove.

[0012] Furthermore, the control box is provided with a first chamber and a second chamber that are interconnected. A gear is fixedly sleeved on the pin shaft. The gear is located in the first chamber. An electromagnet and an iron block are provided in the second chamber. The electromagnet is fixedly installed in the second chamber. The iron block can slide in the second chamber and one end of the iron block extends into the first chamber and can be locked in the tooth groove of the gear. An elastic element is provided between the iron block and the inner wall of the control box. The data acquisition instrument body is provided with a switch to control the electromagnet to turn on and off.

[0013] Furthermore, the inner side of the support plate is provided with a serrated structure.

[0014] Furthermore, the telescopic support rod includes an outer rod and an inner rod. One end of the outer rod is rotatably installed in the inner wall of the groove, and the inner rod slides through the outer rod. The outer end of the inner rod is provided with a flat section. A locking member is provided between the outer rod and the inner rod. A threaded hole is opened on the surface of the outer rod for the locking member to pass through. One end of the locking member is threaded through the threaded hole and abuts against the surface of the inner rod. A clearance groove is opened on one side of the groove for the locking member to be received.

[0015] The beneficial effects of this utility model are: By setting up an installation box, the power bank can be fixed inside the box, and the user only needs to hold the data acquisition instrument itself to complete the operation, making it convenient to use.

[0016] By inserting the power bank into the socket, the power bank presses the locking rod, causing the locking rod to retract into the mounting slot until the slot and the locking rod are aligned. The locking rod then engages in the slot, securing the power bank and the mounting box. By pressing the pressing rod, the arc-shaped spring moves the two crossbars away from each other, causing the two locking rods to disengage from the slots simultaneously, releasing the locking effect of the power bank. This makes it convenient and quick to install and remove the power bank from the mounting box.

[0017] By setting up a pop-out component, when the locking lever disengages from the slot, the pop-out component will push the power bank outward a certain distance, causing the locking lever to be misaligned with the slot, and making it easier for the user to remove the power bank. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a portable data acquisition instrument according to the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the structure of a portable data acquisition instrument according to the present invention. Figure 2 ; Figure 3 This is a schematic diagram of the structure of a portable data acquisition instrument according to the present invention. Figure 3 ; Figure 4 For this Figure 3 Side view; Figure 5 for Figure 4 Enlarged structural diagram at point A; Figure 6 for Figure 5 Enlarged structural diagram at point B; Figure 7 This is a cross-sectional structural diagram of the mounting box in this utility model; Figure 8 for Figure 7 Enlarged structural diagram at point C; Figure 9 for Figure 7 Enlarged structural diagram at point D; Figure 10 This is a schematic diagram of the locking assembly in this utility model; Figure 11 for Figure 10 Enlarged structural diagram at point E; Figure 12 This is a schematic diagram of the support plate in this utility model.

[0019] in, 1. Data acquisition unit body; 2. Mounting box; 3. Power supply; 4. Mounting slot; 5. Locking rod; 6. First spring; 7. Slot; 8. Arc-shaped spring; 9. Crossbar; 10. Pressing rod; 11. Second spring; 12. Mounting cavity; 13. Fixing ring; 14. Third spring; 15. Movable block; 16. Extrusion slope; 17. Storage slot; 18. Support plate; 19. Control box; 20. Pin; 21. Gear; 22. First chamber; 23. Second chamber; 24. Electromagnet; 25. Elastic element; 26. Iron block; 27. Telescopic support rod; 28. Locking element; 29. ​​Groove; 30. Clearance groove; 31. Handle; 32. Flat section; 33. Serrated structure; 34. Insertion slot. Detailed Implementation

[0020] The embodiments of this utility model will be described below with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be understood that the preferred embodiments are only for illustrating this utility model and not for limiting the scope of protection of this utility model.

[0021] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the drawings only show the components related to the present invention and are not drawn according to the number, shape and size of the components in actual implementation. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0022] This embodiment proposes a portable data acquisition instrument, such as... Figures 1 to 12As shown, the device includes a data acquisition unit 1 and a power bank 3. A mounting box 2 is fixedly mounted on the back of the data acquisition unit 1. The mounting box 2 can be integrally formed onto the data acquisition unit 1 or fixedly connected to the data acquisition unit 1 by bolts. A insertion slot 34 is provided on the top of the mounting box 2 for inserting the power bank 3, allowing the power bank 3 to be inserted vertically downwards into the mounting box 2. A locking assembly is provided between the power bank 3 and the mounting box 2. A recessed mounting groove 4 is provided horizontally on the side wall of the insertion slot 34. The locking assembly is located within the mounting groove 4 and includes a locking rod 5 and a first spring 6. One end of the first spring 6 is fixedly connected to the inner side wall of the mounting groove 4 away from the insertion slot 34, and the other end is fixedly connected to one end of the locking rod 5. The locking rod 5 slides within the mounting groove 4, and the other end of the locking rod 5 extends out of the mounting groove 4 and slides against the outer side wall of the power bank 3. A slot 7 is provided on the outer side wall of the power bank 3 to engage with the locking rod 5. A control component is provided on the mounting box 2 to control the position of the locking rod 5.

[0023] There are two card slots 7, which are symmetrically distributed on the left and right sides of the power bank 3. The locking assembly and the mounting slot 4 are respectively set in two slots 7, so that the power bank 3 is more stable after being inserted into the mounting box 2.

[0024] The mounting box 2 has a cavity on one side of the locking rod 5, and an arc-shaped spring piece 8 is installed inside the cavity, with the inner side of the arc-shaped spring piece 8 facing vertically downward. A crossbar 9 is fixed on the locking rod 5, and the axis of the crossbar 9 is perpendicular to the axis of the locking rod 5. The interior of the mounting box 2 has an elongated through groove along the axial direction of the locking rod 5, through which the crossbar 9 passes and whose fixed position is adjustable. The elongated through groove connects the cavity to the mounting groove 4. The two ends of the arc-shaped spring piece 8 are fixedly connected to the ends of the two crossbars 9, respectively. By pressing the arc-shaped spring piece 8, the two crossbars 9 can slide in opposite directions within the elongated through groove, thereby causing the two locking rods 5 to retract into the mounting groove 4, thus releasing the locking effect of the locking rods 5 on the power bank 3. The structure is simple and the operation is convenient.

[0025] The control component includes a pressing rod 10 and a second spring 11. The top wall of the cavity has a through hole that passes through the top of the mounting box 2. The pressing rod 10 is movably inserted into the through hole. The bottom end of the pressing rod 10 is fixedly connected to the top of the arc-shaped spring piece 8, and the top end protrudes out of the mounting box 2 to form a pressing end. By pressing down the pressing rod 10, the arc-shaped spring piece 8 can be pressed.

[0026] The mounting box 2 has a mounting cavity 12 on the outside of the pressing rod 10. A fixing ring 13 is fixedly sleeved on the pressing rod 10. The fixing ring 13 and the second spring 11 are both located inside the mounting cavity 12. The second spring 11 is sleeved on the pressing rod 10. One end of the second spring 11 is connected to the fixing ring 13, and the other end is connected to the inner wall of the mounting cavity 12. The second spring 11 makes the pressing rod 10 tend to protrude out of the mounting box 2. In fact, when the pressing rod 10 is released, under the elastic action of the first spring 6 and the arc-shaped spring 8, the arc-shaped spring 8, the crossbar 9, and the locking rod 5 will return to their original positions. In this embodiment, by setting the second spring 11, it is further ensured that each component quickly resets and is not easily misaligned or deformed.

[0027] The locking rod 5 is provided with a pressing bevel 16 at one end near the insertion slot 34 for pressing against the power bank 3. The bottom of the outer wall of the power bank 3 is provided with an arc-shaped chamfer structure. When the power bank 3 is inserted into the insertion slot 34, the arc-shaped chamfer structure and the pressing bevel 16 are pressed together, which facilitates pressing the locking rod 5 into the mounting slot 4 smoothly.

[0028] The bottom wall of the insertion slot 34 is provided with a pop-out component, which includes a movable block 15 and a third spring 14. One end of the third spring 14 is fixed to the bottom wall of the insertion slot 34, and the other end is fixed to the bottom of the movable block 15. The movable block 15 can slide within the insertion slot 34. When the power bank 3 is inserted into the mounting box 2 and positioned, the bottom of the power bank 3 is supported on the movable block 15, and the third spring 14 is in a compressed state. Thus, when the power bank 3 contacts the locking effect, the third spring 14 pushes the power bank 3 out a certain distance through the movable block 15. This not only causes the slot 7 and the locking rod 5 to be misaligned and not automatically locked again, but also makes it convenient for the user to remove the power bank 3.

[0029] The data acquisition instrument body 1 has symmetrically arranged storage slots 17 on both sides of its back. The storage slots 17 extend along the height of the data acquisition instrument body 1 and penetrate through it. A support component is provided on the back of the data acquisition instrument body 1 for each storage slot 17. The support component has an unfolded state and a retracted state. When the support component is in the retracted state, it is stored in the corresponding storage slot 17. When the user holds the data acquisition instrument body 1, they need to operate it through the touch screen display and / or through buttons, which is often inconvenient. Therefore, for some complex operations, the user will place the data acquisition instrument on a platform (such as a workbench, the ground, etc.) before performing various operations. This application provides a support component that can be unfolded when in use, supporting the data acquisition instrument body 1 on a platform, providing stable operating conditions.

[0030] A control box 19 is fixedly mounted on the bottom of the data acquisition instrument body 1. The support assembly includes a support plate 18 and a telescopic support rod 27. A pin 20 is provided between the support plate 18 and the control box 19. The support plate 18 is rotatably mounted on the control box 19 via the pin 20. The support plate 18 is adapted to a storage slot 17. A groove 29 is formed on the inner wall of the storage slot 17, and the telescopic support rod 27 is hinged between the inner walls of the groove 29. By rotating the support plate 18, the support plate 18 can be unfolded or retracted. By rotating the telescopic support rod 27, the telescopic support rod 27 can be unfolded or retracted. In this embodiment, when the support plate 18 is unfolded, the telescopic support rod 27 is rotated to adjust its length and fix it. Then, the telescopic support rod 27 is supported on the support plate 18. At this time, the data acquisition instrument body 1, the support plate 18, and the telescopic support rod 27 form a triangular support structure with strong stability. At the same time, the tilt angle of the display screen of the data acquisition instrument body 1 can be adjusted.

[0031] The control box 19 has a first chamber 22 and a second chamber 23 that are interconnected. A gear 21 is fixedly sleeved on the pin 20. The gear 21 is located in the first chamber 22. An electromagnet 24 and an iron block 26 are arranged in the second chamber 23. The electromagnet 24 is fixedly installed on the inner wall of the second chamber 23 away from the first chamber 22. The iron block 26 is slidably installed in the second chamber 23. The iron block 26 can slide in the second chamber 23 and one end of the iron block 26 extends into the first chamber 22 to engage between the teeth of the gear 21. An elastic element 25 is arranged between the iron block 26 and the inner wall of the control box 19. The data acquisition instrument body 1 is equipped with a switch (not shown in the figure) to control the on and off of the electromagnet 24. In this embodiment, the electromagnet 24 is electrically connected to the internal power supply of the data acquisition instrument body 1 through a wire. The structure and method of controlling the on and off of the electromagnet 24 by a switch have been fully disclosed in the prior art and will not be described in detail here. The elastic element 25 is still a spring, and the installation method of the device can be similar to the installation method of the second spring 11, which will not be described in detail here.

[0032] In one alternative embodiment, the elastic element 25 causes the iron block 26 to tend to move away from the first chamber 22. When the electromagnet 24 is energized, a repulsive force is generated between the electromagnet 24 and the iron block 26. The iron block 26 extends into the first chamber 22 and gets stuck between the teeth of the gear 21, forcing the gear 21 to be unable to rotate. That is, neither the pin 20 nor the support plate 18 can rotate. Thus, the support plate 18 and the data acquisition instrument body 1 are relatively fixed, making the support effect and stability of the support plate 18 on the data acquisition instrument body 1 better.

[0033] In this embodiment, the elastic element 25 causes the iron block 26 to tend to move closer to the first chamber 22. That is, when the electromagnet 24 is de-energized, under the action of the elastic element 25, the iron block 26 extends into the first chamber 22 and gets stuck between the teeth of the gear 21, forcing the gear 21 to be unable to rotate. When the electromagnet 24 is energized, an attraction is generated between the electromagnet 24 and the iron block 26, and the iron block 26 separates from the gear 21. At this time, the support plate 18 can rotate freely.

[0034] In the above embodiments, there can be two pins 20, as shown in the attached figures of this embodiment. In this case, the two support plates 18 are relatively independent and can be supported on the platform at different tilt angles, thus providing greater adaptability. Alternatively, there can be only one pin 20, where two support plates 18 are fixedly connected to one pin 20 simultaneously. In this case, the rotation of the two support plates 18 is synchronized, making it more convenient to use.

[0035] The inner side of the support plate 18 is provided with a serrated structure 33, which makes it easier for the telescopic support rod 27 to better abut against the support plate 18.

[0036] The telescopic support rod 27 includes an outer rod and an inner rod. One end of the outer rod is rotatably mounted within the inner wall of the groove 29, and the inner rod slides through the outer rod. A flat section 32 is provided at the outer end of the inner rod, which engages with the serrated structure 33 on the support plate 18. A locking member 28 is provided between the outer rod and the inner rod. A threaded hole for the locking member 28 to pass through is provided on the surface of the outer rod. One end of the locking member 28 is threaded through the threaded hole and abuts against the surface of the inner rod, thus locking and fixing the outer rod and the inner rod. In this embodiment, a clearance groove 30 is provided on one side of the groove 29 for receiving the locking member 28; a handle 31 is provided on the top of the data acquisition instrument body 1 for easy movement of the data acquisition instrument body 1.

[0037] Working principle: The handle 31 facilitates carrying the data acquisition instrument body 1. In the initial state, the electromagnet 24 is kept de-energized, the telescopic support rod 27 is stored in the groove 29, and the support plate 18 is stored in the storage slot 17. Under the action of the elastic element 25, the iron block 26 is engaged in the tooth groove of the gear 21, and the support plate 18 is fixed relative to the data acquisition instrument body 1. The support plate 18 will not rotate naturally. In order to reduce the wear of the gear 21, the iron block 26 and the elastic element 25 and extend their service life, when the support plate 18 is stored in the storage slot 17, the top of the support plate 18 can be magnetically attracted to the inner wall of the storage slot 17.

[0038] When the support assembly needs to be deployed, the electromagnet 24 is energized by the switch. The electromagnet 24 attracts the iron block 26, causing the iron block 26 to separate from the gear 21. At this time, the support plate 18 can be easily rotated. After the support plate 18 is rotated into place, the electromagnet 24 is de-energized, and the iron block 26 is once again engaged between the teeth of the gear 21. The support plate 18 and the data acquisition instrument body 1 are locked and fixed again. Then, the telescopic support rod 27 is deployed, the locking part 28 is screwed on, and the length of the inner rod is adjusted so that the flat section 32 of the inner rod abuts against the serrated structure 33 of the support plate 18. Then the data acquisition instrument body 1 can be stably supported on the platform.

[0039] When the data acquisition instrument body 1 needs to be charged after a long period of operation, the power bank 3 is inserted into the insertion slot 34. The arc-shaped chamfered structure of the power bank 3 presses against the pressing slope 16 of the locking rod 5, causing the locking rod 5 to retract and the power bank 3 to be inserted smoothly until the slot 7 is aligned with the locking rod 5. The locking rod 5 is then locked into the slot 7, and the power bank 3 is fixed. At this time, the third spring 14 is compressed, and the power bank 3 is connected to the data acquisition instrument body 1 through the wire, realizing the charging of the data acquisition instrument body 1 without affecting the operation of the data acquisition instrument body 1. When the power bank 3 needs to be removed after use, press down the pressing rod 10. The arc-shaped spring 8 expands elastically, causing the two horizontal bars 9 to move outward. Then, the two locking rods 5 disengage from the slot 7 at the same time. Under the action of the third spring 14, the power bank 3 is pushed up a certain distance, at which point the power bank 3 can be easily removed. The installation and removal of the power bank 3 is convenient and quick.

[0040] The above embodiments are merely preferred embodiments provided to fully illustrate the present utility model, and the protection scope of the present utility model is not limited thereto. Equivalent substitutions or modifications made by those skilled in the art based on the present utility model are all within the protection scope of the present utility model.

Claims

1. A portable data acquisition instrument, characterized in that: The device includes a data acquisition unit and a power bank. The back of the data acquisition unit is provided with a mounting box, and the mounting box has a plug slot for inserting the power bank. A locking assembly is provided between the power bank and the mounting box. The side wall of the plug slot is provided with an installation groove in the horizontal direction. The locking assembly is located in the installation groove. The locking assembly includes a locking rod and a first spring. One end of the first spring is connected to the side wall of the installation groove, and the other end is connected to one end of the locking rod. The locking rod is slidably engaged with the installation groove. The other end of the locking rod extends out of the installation groove and contacts the outer wall of the power bank. The outer wall of the power bank is provided with a slot that engages with the locking rod. The mounting box is equipped with a control component for controlling the position of the locking lever.

2. A portable data acquisition instrument according to claim 1, characterized in that: There are two card slots, which are symmetrically distributed on the left and right sides of the power bank. The locking assembly and the mounting slot are provided in two places respectively corresponding to the card slots.

3. A portable data acquisition instrument according to claim 2, characterized in that: The mounting box has a cavity on one side of the locking rod, and an arc-shaped spring is provided in the cavity. A crossbar is fixed on the locking rod. The interior of the mounting box has an elongated through groove along the axial direction of the locking rod for the crossbar to pass through, and the fixed position of the crossbar is adjustable. The elongated through groove connects the cavity and the mounting groove. The two ends of the arc-shaped spring are fixedly connected to the ends of the two crossbars respectively.

4. A portable data acquisition instrument according to claim 3, characterized in that: The control component includes a pressing rod and a second spring. The top wall of the cavity has a through hole that penetrates the top of the mounting box. The pressing rod is movably inserted into the through hole. The bottom end of the pressing rod is fixedly connected to the top of the arc-shaped spring piece, and the top end protrudes outside the mounting box. The mounting box has a mounting cavity on the outside of the pressing rod. A fixing ring is fixedly sleeved on the pressing rod. The fixing ring and the second spring are both located inside the mounting cavity. The second spring is sleeved on the pressing rod. One end of the second spring is connected to the fixing ring, and the other end is connected to the inner wall of the mounting cavity. The second spring makes the pressing rod tend to protrude out of the mounting box.

5. A portable data acquisition instrument according to claim 1, characterized in that: The locking rod has a pressing bevel near the insertion slot for pressing against the power bank, and the power bank has an arc-shaped chamfered structure at the bottom.

6. A portable data acquisition instrument according to claim 1, characterized in that: The bottom wall of the insertion slot is provided with a pop-out component, which includes a movable block and a third spring. One end of the third spring is fixed to the bottom of the insertion slot, and the other end is fixed to the bottom of the movable block. The movable block can slide inside the insertion slot.

7. A portable data acquisition instrument according to claim 1, characterized in that: The data acquisition instrument body has symmetrical storage slots on both sides of the back. The back of the data acquisition instrument body is provided with a support component for each storage slot. The support component has an unfolded state and a retracted state. The support component can be stored in the corresponding storage slot. The data acquisition instrument body has a control box fixedly installed at the bottom. The support assembly includes a support plate and a telescopic support rod. A pin is provided between the support plate and the control box. The support plate is rotatably mounted on the control box through the pin. The support plate is adapted to the storage slot. The inner wall of the storage slot has a groove, and the telescopic support rod is hinged between the inner walls of the groove.

8. A portable data acquisition instrument according to claim 7, characterized in that: The control box contains a first chamber and a second chamber that are interconnected. A gear is fixedly mounted on the pin shaft. The gear is located in the first chamber. An electromagnet and an iron block are disposed in the second chamber. The electromagnet is fixedly installed in the second chamber. The iron block can slide in the second chamber, and one end of the iron block extends into the first chamber and can be locked in the tooth groove of the gear. An elastic element is disposed between the iron block and the inner wall of the control box. The data acquisition instrument body is provided with a switch to control the on and off of the electromagnet.

9. A portable data acquisition instrument according to claim 7, characterized in that: The inner side of the support plate is provided with a serrated structure.

10. A portable data acquisition instrument according to claim 7, characterized in that: The telescopic support rod includes an outer rod and an inner rod. One end of the outer rod is rotatably installed in the inner wall of the groove. The inner rod slides through the outer rod. The outer end of the inner rod is provided with a flat section. A locking member is provided between the outer rod and the inner rod. A threaded hole is opened on the surface of the outer rod for the locking member to pass through. One end of the locking member is threaded through the threaded hole and abuts against the surface of the inner rod. A clearance groove is opened on one side of the groove for the locking member to be received.

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