Digital display Bluetooth caliper

Abstract

The utility model relates to the technical field of caliper measurement, and provides a digital display Bluetooth caliper, which comprises a caliper blank, a fixed grid bar arranged at the top of the caliper blank, the bottom of the fixed grid bar and the top of the caliper blank are adhered and connected through a double faced adhesive tape, a PCB is connected to the top of the caliper blank in a pre-pressing manner, a plurality of touch switches are fixedly connected to the top of the PCB, one side of the top of the PCB is fixedly connected with a positive plate, and the other side of the top of the PCB is fixedly connected with a negative plate. The top of the PCB is fixedly connected with a processing chip, the top of the PCB is connected with a housing, one side of the top of the PCB is connected with a conductive adhesive in a pre-pressing manner, the interior of the housing is connected with a liquid crystal sheet in a pre-pressing manner, one side of the bottom of the liquid crystal sheet is connected with the top of the conductive adhesive in a pre-pressing manner, and the other side of the bottom of the liquid crystal sheet is connected with the top of the conductive adhesive in a pre-pressing manner. A glass sheet is connected to the top of the housing in an adhesion manner, a hook is fixedly mounted in the housing, and a roller is connected to the interior of the hook through a bearing. According to the technical scheme, the problems that batch detection is not convenient and the working efficiency is not convenient to improve in the prior art are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of caliper measurement, and specifically to a digital display Bluetooth caliper. Background Art

[0002] A caliper is a measuring tool, consisting of a main scale and a vernier, used to measure length, inner and outer diameters, and depth, and has the functions of measurement and inspection. There are two pairs of movable jaws on the main scale and vernier of the vernier caliper, namely the inner measuring jaw and the outer measuring jaw. The inner measuring jaw is usually used to measure the inner diameter, and the outer measuring jaw is usually used to measure the length and outer diameter. Measuring tools are instruments used for measurement and inspection, and length measuring tools are one of its main categories, such as calipers, depth gauges, height gauges, micrometers, dial indicators, micrometers, gauge blocks, step gauges, angle rulers, inclinometers, etc. Calipers are one of the most important types of length measuring tools.

[0003] A Chinese patent with announcement number CN209295810U discloses a vernier caliper, including a fixed main scale, a detachable main scale, a movable main scale, a first clamping jaw, and a second clamping jaw matching the first clamping jaw. The second clamping jaw is fixed to the movable main scale. The movable main scale is slidably arranged on the fixed main scale. A first mounting hole is provided on the fixed main scale. A second mounting hole is provided on the first clamping jaw. A third mounting hole and a fourth mounting hole are provided at both ends of the detachable main scale. A sleeve groove is provided on the side of the detachable main scale close to the fourth mounting hole. The utility model has a large measurable range. While increasing the measurable range, the utility model is detachable between the fixed main scale and the detachable main scale, which is easy to carry. The utility model is provided with a vernier fastening screw for easy reading. The utility model has high accuracy while increasing the measurable range.

[0004] However, in the implementation of relevant technologies, it was found that the above technical solutions have the following problems: the existing product measurement method requires individual records, and it is always impossible to intelligently record measurement data in some work scenarios. The measurement method of existing products is still to measure a value and then record it in writing or transmit it through a USB data cable (which has high requirements for the scene). This is too inefficient for batch testing. At the same time, existing products cannot use Bluetooth to transmit data, so further improvement is needed. Utility Model Content

[0005] The utility model provides a digital display Bluetooth caliper, which solves the problem in the related art that it is inconvenient to carry out batch detection and improve work efficiency.

[0006] The technical solution of the utility model is as follows:

[0007] A digital display Bluetooth caliper comprises a ruler blank, a fixed grid bar is provided on the top of the ruler blank, the bottom of the fixed grid bar is bonded to the top of the ruler blank by double-sided adhesive, a PCB board is pre-pressed on the top of the ruler blank, a plurality of touch switches are fixedly connected to the top of the PCB board, a positive electrode sheet is fixedly connected to one side of the top of the PCB board, a negative electrode sheet is provided on one side of the positive electrode sheet, a processing chip is fixedly connected to the top of the PCB board, a cover is installed on the top of the PCB board, a conductive glue is pre-pressed on one side of the top of the PCB board, a liquid crystal sheet is pre-pressed inside the cover, one side of the bottom of the liquid crystal sheet is pre-pressed and connected to the top of the conductive glue, a glass sheet is bonded to the top of the cover, a hook is fixedly installed inside the cover, a roller is connected inside the hook through a bearing, a battery holder is provided on one side of the cover, a V battery is provided inside the battery holder, a Bluetooth indicator light is fixedly connected to one side of the top of the PCB board, a light guide column is fixedly connected to the top of the Bluetooth indicator light, a Bluetooth module is fixedly connected to one side of the top of the PCB board, and four buttons are installed inside the cover.

[0008] Preferably, the bottom of the negative electrode sheet is installed and connected to one side of the top of the PCB board, and the liquid crystal sheet is located at the bottom of the glass sheet.

[0009] Preferably, the roller is located on one side of the outer shell, and the shape of the hook is matched with the shape of one side of the inner shell.

[0010] Preferably, the outer surface of the battery holder is snap-fitted to the inside of the cover shell, and the outer surface of the V battery is snap-fitted to the inside of the battery holder.

[0011] Preferably, the light guide column is in contact with the interior of the housing, and the top of the light guide column is fixedly connected to one side of the bottom of the liquid crystal panel.

[0012] Preferably, the Bluetooth module is electrically connected to the Bluetooth indicator light, and the cover is fixedly mounted on the outside of the ruler blank.

[0013] Preferably, three of the buttons are arranged in a line on the top of the housing, and another button is disposed on an outer side of the housing.

[0014] Preferably, the inside of the roller is in contact with one side of the outside of the fixed grid bar, and the plurality of buttons are electrically connected to the processing chip and the liquid crystal panel.

[0015] The working principle and beneficial effects of the utility model are:

[0016] In the utility model, through the innovation of the device, the quantity can be recorded by pressing a button each time a measurement is made, that is, the measurement data can be transmitted via Bluetooth, and the measurement data can be quickly saved and recorded in a short time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0018] Figure 1 It is an exploded view of the overall structure of the utility model;

[0019] Figure 2 It is a schematic top view of the overall structure of the utility model;

[0020] Figure 3 It is a rear view schematic diagram of the overall structure of the utility model;

[0021] Figure 4 It is a bottom view schematic diagram of the overall structure of the utility model;

[0022] Figure 5 It is a schematic side view of the overall structure of the utility model.

[0023] In the figure: 1. ruler; 2. fixed grid bar; 3. PCB board; 4. touch switch; 5. positive electrode; 6. negative electrode; 7. processing chip; 8. liquid crystal sheet; 9. cover; 10. conductive glue; 11. glass sheet; 12. hook; 13. roller; 14. 3V battery; 15. battery holder; 16. light guide column; 17. Bluetooth module; 18. Bluetooth indicator light; 19. button. DETAILED DESCRIPTION

[0024] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] like Figure 1 to Figure 5As shown, this embodiment proposes a digital display Bluetooth caliper, including a ruler blank 1, a fixed grid bar 2 is arranged on the top of the ruler blank 1, the bottom of the fixed grid bar 2 is bonded and connected to the top of the ruler blank 1 by double-sided adhesive, a PCB board 3 is pre-pressed and connected to the top of the PCB board 3, a plurality of light touch switches 4 are fixedly connected to the top of the PCB board 3, a positive electrode sheet 5 is fixedly connected to one side of the top of the PCB board 3, a negative electrode sheet 6 is arranged on one side of the positive electrode sheet 5, a processing chip 7 is fixedly connected to the top of the PCB board 3, a cover shell 9 is installed and connected to the top of the PCB board 3, a conductive glue 10 is pre-pressed and connected to one side of the top of the PCB board 3, and the cover shell 9 is pre-pressed inside. A liquid crystal sheet 8 is connected, one side of the bottom of the liquid crystal sheet 8 is pre-pressed and connected to the top of the conductive glue 10, a glass sheet 11 is adhesively connected to the top of the cover shell 9, a hook 12 is fixedly installed inside the cover shell 9, a roller 13 is connected inside the hook 12 through a bearing, a battery holder 15 is provided on one side of the inside of the cover shell 9, a 3V battery 14 is provided inside the battery holder 15, a Bluetooth indicator light 18 is fixedly connected to one side of the top of the PCB board 3, a light guide column 16 is fixedly connected to the top of the Bluetooth indicator light 18, a Bluetooth module 17 is fixedly connected to one side of the top of the PCB board 3, and four buttons 19 are installed and connected inside the cover shell 9.

[0026] In this embodiment, the bottom of the negative electrode sheet 6 is connected to the top side of the PCB board 3, and the liquid crystal sheet 8 is located at the bottom of the glass sheet 11, which makes it convenient for the staff to accurately read the value on the liquid crystal sheet 8 through the glass sheet 11.

[0027] In this embodiment, the roller 13 is located on the outer side of the cover shell 9, and the shape of the hook 12 is adapted to the shape of the inner side of the cover shell 9, which can facilitate the rolling of the roller 13 outside the cover shell 9 and facilitate the adaptable connection of the cover shell 9 to the hook 12.

[0028] In this embodiment, the outer surface of the battery holder 15 is snap-fitted to the interior of the cover shell 9, and the outer surface of the 3V battery 14 is snap-fitted to the interior of the battery holder 15, which can facilitate the separation of the battery holder 15 from the cover shell 9, and at the same time, can facilitate the separation of the battery holder 15 from the 3V battery 14, making it convenient to replace the 3V battery 14.

[0029] In this embodiment, the light guide column 16 is in contact with the inside of the housing 9 , and the top of the light guide column 16 is fixedly connected to one side of the bottom of the liquid crystal panel 8 , which can facilitate the fixed connection of the light guide column 16 .

[0030] In this embodiment, the Bluetooth module 17 and the Bluetooth indicator light 18 are electrically connected, and the cover 9 is fixedly installed on the outside of the ruler blank 1, so that the Bluetooth module 17 can control the Bluetooth indicator light 18 to light up and flash.

[0031] In this embodiment, three of the buttons 19 are arranged in a line on the top of the housing 9 , and another button 19 is disposed on one side of the outside of the housing 9 , which makes it convenient for the staff to press the button 19 .

[0032] In this embodiment, the inside of the roller 13 is in contact with one side of the outside of the fixed grid bar 2, and multiple buttons 19 are electrically connected to the processing chip 7 and the liquid crystal panel 8, which can facilitate the scrolling of the roller 13 and the control of the display program on the liquid crystal panel 8 by the buttons 19 through the processing chip 7.

[0033] When using:

[0034] 1. Fix the fixed grid bar 2 in the groove of the ruler blank 1 by glue or double-sided tape, and then stick the scale film on the fixed grid bar 2. At this time, the fixed grid structure is completed;

[0035] 2. Solder the touch switch 4, the positive electrode 5, the negative electrode 6, the capacitor, the processing chip 7, and the Bluetooth module 17 on the PCB board 3, and then insert the liquid crystal sheet 8 obliquely into the cover 9 from the front. Through the ingenious structure of the cover 9, the liquid crystal sheet 8 can no longer be taken out in the vertical direction of the cover 9, but the liquid crystal sheet 8 can still move up and down in the vertical direction. It is particularly noted that the movement is very small and is restricted by the cover 9 up and down; the liquid crystal pressing block is connected from the inside of the cover 9 by screws. At this time, the liquid crystal sheet 8 is fixed by the pressure strip on the left side of the cover 9 and the liquid crystal pressing block on the right side; then put the glass sheet 11 with adhesive tape from the top of the cover 9 and fix it on the table reserved around the cover 9 On the step, then insert the conductive glue 10 from the inside of the cover 9 to connect with the liquid crystal chip 8, then install the welded PCB board 3 inside the cover 9 by screws, and use a soft sponge to lift the liquid crystal chip 8 so that the liquid crystal chip 8 cannot move up and down. At this time, the PCB board 3 can be connected to the liquid crystal chip 8 through the conductive glue 10 for data transmission, and then the glass sheet 11 with double-sided tape is adhered to the cover 9 on the front side, and finally the hook 12 is hung with the roller 13 and installed inside the cover 9 by screws. When the above work is completed, put the 3V battery 14 into the battery holder 15, and then insert the battery holder 15 into the cover 9, so that the positive and negative electrodes on the PCB board 3 are connected. At this time, the dynamic grid is completed;

[0036] 3. Install the installed moving grid on the ruler blank 1 with the fixed grid by screws to complete the assembly of the full-screen digital caliper;

[0037] 4. Capacitive gate measurement principle: A voltage signal is generated by the parallel displacement of the PCB board 3 and the fixed grid bar 2. After chip data processing, a digital signal is generated and then transmitted to the liquid crystal chip 8 by the conductive glue 10 to display the measurement data.

[0038] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A digital display Bluetooth caliper, comprising a ruler blank (1), characterized in that: The top of the ruler blank (1) is provided with a fixed grid bar (2), the bottom of the fixed grid bar (2) is bonded to the top of the ruler blank (1) by double-sided adhesive, the top of the ruler blank (1) is pre-pressed with a PCB board (3), the top of the PCB board (3) is fixedly connected with a plurality of light touch switches (4), one side of the top of the PCB board (3) is fixedly connected with a positive electrode sheet (5), one side of the positive electrode sheet (5) is provided with a negative electrode sheet (6), the top of the PCB board (3) is fixedly connected with a processing chip (7), the top of the PCB board (3) is installed with a cover shell (9), one side of the top of the PCB board (3) is pre-pressed with a conductive adhesive (10), the inside of the cover shell (9) is pre-pressed with a liquid crystal sheet (8), the liquid crystal The bottom side of the sheet (8) is pre-pressed and connected to the top of the conductive adhesive (10); the top of the cover shell (9) is bonded and connected to a glass sheet (11); a hook (12) is fixedly installed inside the cover shell (9); a roller (13) is connected inside the hook (12) via a bearing; a battery holder (15) is provided on one side inside the cover shell (9); a 3V battery (14) is provided inside the battery holder (15); a Bluetooth indicator light (18) is fixedly connected to one side of the top of the PCB board (3); a light guide column (16) is fixedly connected to the top of the Bluetooth indicator light (18); a Bluetooth module (17) is fixedly connected to one side of the top of the PCB board (3); and four buttons (19) are installed and connected inside the cover shell (9).

2. The digital display Bluetooth caliper according to claim 1, characterized in that: The bottom of the negative electrode sheet (6) is installed and connected to one side of the top of the PCB board (3), and the liquid crystal sheet (8) is located at the bottom of the glass sheet (11).

3. The digital display Bluetooth caliper according to claim 1, characterized in that: The roller (13) is located on one side of the exterior of the housing (9), and the shape of the hook (12) matches the shape of one side of the interior of the housing (9).

4. The digital display Bluetooth caliper according to claim 1, characterized in that: The outer surface of the battery seat (15) is snap-fitted to the interior of the cover shell (9), and the outer surface of the 3V battery (14) is snap-fitted to the interior of the battery seat (15).

5. The digital display Bluetooth caliper according to claim 1, characterized in that: The light guide column (16) is in contact with the interior of the housing (9), and the top of the light guide column (16) is fixedly connected to one side of the bottom of the liquid crystal panel (8).

6. The digital display Bluetooth caliper according to claim 1, characterized in that: The Bluetooth module (17) is electrically connected to the Bluetooth indicator light (18), and the cover (9) is fixedly mounted on the outside of the ruler blank (1).

7. The digital display Bluetooth caliper according to claim 1, characterized in that: Three of the buttons (19) are arranged in a line on the top of the cover (9), and another button (19) is arranged on one side of the outside of the cover (9).

8. The digital display Bluetooth caliper according to claim 1, characterized in that: The inside of the roller (13) is in contact with one side of the outside of the fixed grid bar (2), and the plurality of buttons (19) are electrically connected to the processing chip (7) and the liquid crystal panel (8).

Images