Curved surface measuring instrument

Abstract

The utility model relates to the technical field of curved surface measuring instruments, and provides a curved surface measuring instrument, which comprises a plastic shell and a detection module arranged on the plastic shell, the detection module comprises a fixed grid gear assembly rotationally arranged in the plastic shell, and a movable grid assembly is arranged above the fixed grid gear assembly; according to the utility model, after the fixed grid gear assembly and the movable grid assembly as well as the power supply assembly and the plastic shell are installed, the fixed grid plate can be driven to rotate through the rolling of the roller, and a voltage signal generated by the fixed grid plate and the PCB through rotation displacement is subjected to MCU data processing to generate a digital signal, and then the digital signal is transmitted to the liquid crystal screen through the conductive adhesive to display measurement data. Compared with the prior art, the utility model has the advantages that the structure is simple, the total price of accessory materials can be reduced by about 20% on the basis of old products, the precision of the product can be improved to + / -0.1 mm from the original + / -1mm, and the problems of low manufacturing cost and low measurement precision in the prior art are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of curved surface measuring instruments, and specifically, to a curved surface measuring instrument. Background Art

[0002] The curved surface measuring instrument converts the number of turns of the roller rolling into the rolling distance for data conversion, and can measure the straight-line distance, L-shaped wall corners, U-shaped wall corners, and the distances of flexible objects (such as waist circumference, arm length, etc.), and can measure the diameter of a cylinder (measuring the circumference and automatically converting the diameter).

[0003] The structure of the existing curved surface measuring instrument is installed as follows: First, solder components such as a battery, a USB, a chip, a roller sensor, and an electronic capacitor onto the PCB. Then, install the PCB onto the PCB rack, and then install it onto the outer shell and connect the liquid crystal to the PCB through a flexible cable for data conduction. Next, install the roller and the gear output shaft onto the PCB rack (while one end of the gear output shaft is inserted into the roller output shaft on the PCB). In this way, the number of turns of the roller rolling can be transmitted as a signal to the chip by the cooperation of the gear rotation, and the measured value can be obtained from the data output by the chip, and then the measured value is displayed by the liquid crystal. Finally, the back glass sheet and the front glass sheet are respectively adhered to both sides of the outer shell through double-sided tape to complete the installation.

[0004] However, the above-mentioned curved surface measuring instrument has the following problems: The existing product is the first-generation product in the market, and a roller encoder with a high cost is used in the PCB board design, which increases the manufacturing cost of the curved surface measuring instrument. At the same time, the existing roller encoder has low accuracy and can only achieve an accuracy of 1 mm. Content of the Utility Model

[0005] The utility model provides a curved surface measuring instrument, which solves the problems of high manufacturing cost and low measuring accuracy in the prior art.

[0006] The technical solution of the utility model is as follows: A curved surface measuring instrument includes a plastic outer shell and a detection module installed in the plastic outer shell. The detection module includes a fixed grating gear assembly rotatably installed in the plastic outer shell. A moving grating assembly is arranged above the fixed grating gear assembly. A liquid crystal screen is electrically connected to the moving grating assembly. A power supply assembly for providing power to the fixed grating gear assembly, the moving grating assembly, and the liquid crystal screen is arranged on one side of the plastic outer shell. A key is arranged on the moving grating assembly, and a glass sheet is adhered to the upper cover shell.

[0007] Preferably, the plastic outer shell includes a lower cover shell and an upper cover shell that is snap-fitted with the lower cover shell up and down.

[0008] Preferably, an annular groove for accommodating the fixed grating gear assembly is provided on the inner side of the bottom of the lower cover shell, and a window for displaying the liquid crystal screen and a key hole for loading the key are provided on the top of the upper cover shell.

[0009] Preferably, the fixed grating gear assembly includes a fixed grating plate, a fixed grating gear seat and a roller. The fixed grating gear seat and the roller are both rotatably arranged in the lower housing through a wheel shaft at the central position. The fixed grating plate is adhesively bonded to the fixed grating gear seat, and a gear meshing with the fixed grating gear seat is provided at the bottom of the roller.

[0010] Preferably, the moving grating assembly includes a PCB board, and a conductive adhesive capable of being electrically connected to the liquid crystal screen is fixed on the surface of the PCB board.

[0011] Preferably, a touch switch corresponding to the key is fixed on the surface of the PCB board.

[0012] Preferably, the power supply assembly includes a battery holder. An insertion socket capable of being inserted and installed with the battery holder is provided on one side of the upper housing. Two button batteries are loaded in the battery holder. A negative electrode plate, a positive electrode plate and a conduction electrode plate for conducting the two button batteries to the moving grating assembly are fixed at the bottom of the battery holder.

[0013] The beneficial effects of the present utility model are as follows:

[0014] After the fixed grating gear assembly, the moving grating assembly, the power supply assembly and the plastic housing are installed in the product of the present utility model, the rotation of the fixed grating plate can be driven by the rolling of the roller. The voltage signal generated by the rotational displacement of the fixed grating plate and the PCB board is processed by the MCU to generate a digital signal, and then transmitted to the liquid crystal screen through the conductive adhesive to display the measurement data. Compared with the prior art, the structure of the present utility model is simple. The total price of the prepared accessory materials can be reduced by about 20% on the basis of the old product. The accuracy of the product can be improved from the original plus or minus 1 mm to plus or minus 0.1 mm, solving the problems of high manufacturing cost and low measurement accuracy in the prior art. Description of the Drawings

[0015] The following further describes the present utility model in detail with reference to the drawings and specific embodiments.

[0016] Figure 1 is a disassembled schematic diagram of the surface measuring instrument proposed by the present utility model;

[0017] Figure 2 is a structural schematic diagram of the fixed grating gear assembly proposed by the present utility model;

[0018] Figure 3 is a structural schematic diagram of the moving grating assembly proposed by the present utility model;

[0019] Figure 4 is a structural schematic diagram of the power supply assembly proposed by the present utility model;

[0020] In the figure: 1. Plastic housing; 11. Lower housing; 12. Upper housing; 2. Fixed grid gear assembly; 21. Fixed grid plate; 22. Fixed grid gear seat; 23. Roller; 3. Moving grid assembly; 31. PCB board; 32. Conductive adhesive; 33. Touch switch; 4. LCD screen; 5. Button; 6. Power supply assembly; 61. Battery holder; 62. Button battery; 63. Negative electrode plate; 64. Positive electrode plate; 65. Conductive electrode plate; 7. Glass sheet. Detailed implementation mode

[0021] Next, in combination with the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present invention.

[0022] Please refer to Figure 1 , the present invention provides a technical solution: a curved surface measuring instrument, including a plastic housing 1 and a detection module installed in the plastic housing 1. The detection module includes a fixed grid gear assembly 2 rotatably installed in the plastic housing 1. Above the fixed grid gear assembly 2 is provided a moving grid assembly 3. The moving grid assembly 3 is electrically connected to an LCD screen 4. On one side of the plastic housing 1 is provided a power supply assembly 6 for supplying power to the fixed grid gear assembly 2, the moving grid assembly 3 and the LCD screen 4. On the moving grid assembly 3 is provided a button 5. A glass sheet 7 is adhered to the upper housing 12.

[0023] Please refer to Figure 1 , the plastic housing 1 includes a lower housing 11 and an upper housing 12 that is snap-fitted to the upper and lower parts of the lower housing 11. Among them, an annular groove for accommodating the fixed grid gear assembly 2 is provided on the inner side of the bottom of the lower housing 11. A window for displaying the LCD screen 4 and a key hole for loading the button 5 are provided on the top of the upper housing 12.

[0024] Please refer to Figure 1 And Figure 2, the fixed grating gear assembly 2 includes a fixed grating plate 21, a fixed grating gear seat 22 and a roller 23. The fixed grating gear seat 22 and the roller 23 are both rotatably arranged in the lower housing 11 through a wheel axle at the central position. When assembling the fixed grating gear assembly 2, first bond the fixed grating plate 21 to the fixed grating gear seat 22. A gear meshing with the fixed grating gear seat 22 is provided at the bottom of the roller 23. Fix the fixed grating plate 21 to the fixed grating gear seat 22 with glue, then insert the fixed grating gear seat 22 into an inner annular groove of the lower housing 11, and then insert the roller 23 into another outer annular groove of the lower housing 11 in the same way, and pay attention to stagger the engagement between the gear at the bottom of the roller 23 and the teeth of the fixed grating gear seat 22. At this time, the roller 23 and the fixed grating gear seat 22 can be driven by gear meshing, that is, the rotation of the roller 23 can drive the rotation of the fixed grating plate 21.

[0025] Please refer to Figure 2 and Figure 3 , the moving grating assembly 3 includes a PCB board 31. A conductive adhesive 32 capable of electrically connecting to the liquid crystal screen 4 is fixed on the surface of the PCB board 31. A touch switch 33 corresponding to the button 5 is fixed on the surface of the PCB board 31. When assembling the moving grating assembly 3, first install the liquid crystal screen 4 inside the window of the upper housing 12, then put the button 5 into the keyhole, and then lock the conductive adhesive 32 and the completed PCB board 31 (electronic devices such as resistors, capacitors, touch switches 33, and chips are carried on the surface of the PCB board 31, and the electronic devices such as resistors, capacitors, and chips are not drawn in the figure) into the upper housing 12 with screws. Finally, bond the glass sheet 7 to the front of the upper housing 12 with double-sided tape.

[0026] Please refer to Figure 1 and Figure 4 , the power supply assembly 6 includes a battery holder 61. An insertion port capable of being inserted and installed with the battery holder 61 is opened on one side of the upper housing 12. Two button batteries 62 are loaded in the battery holder 61. A negative electrode piece 63, a positive electrode piece 64 and a conduction electrode piece 65 for conducting the two button batteries 62 to the moving grating assembly 3 are fixed at the bottom of the battery holder 61. When assembling the power supply assembly 6, first weld and install the positive electrode piece 64, the negative electrode piece 63, and the conduction electrode piece 65 to the battery holder 61 in sequence, and then install the two button batteries 62 on the battery holder 61 and conduct the two button batteries 62 by the conduction electrode piece 65. After the fixed grating gear assembly 2 and the moving grating assembly 3 are installed, the installed upper housing 12 and the lower housing 11 can be locked and connected with screws. Finally, insert the assembled battery holder 61 from the side to energize.

[0027] The working principle and usage process of the present utility model are as follows: After the fixed grating gear assembly 2, the moving grating assembly 3, the power supply assembly 6 and the plastic housing 1 are installed to complete the product, the rotation of the fixed grating plate 21 can be driven by the rolling of the roller 23. The voltage signal generated by the rotation displacement of the fixed grating plate 21 and the PCB board 31 is processed by the MCU to generate a digital signal, and then transmitted to the liquid crystal screen 4 through the conductive adhesive 32 to display the measurement data.

[0028] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A surface measuring instrument, comprising a plastic housing (1) and a detection module mounted on the plastic housing (1), characterized in that, The detection module includes a fixed grid gear assembly (2) rotatably installed in a plastic housing (1). Above the fixed grid gear assembly (2), there is a moving grid assembly (3). The moving grid assembly (3) is electrically connected to a liquid crystal screen (4). On one side of the plastic housing (1), there is a power supply assembly (6) that provides power for the fixed grid gear assembly (2), the moving grid assembly (3), and the liquid crystal screen (4). A button (5) is arranged on the moving grid assembly (3), and a glass sheet (7) is adhered to the upper cover (12).

2. The surface measuring instrument according to claim 1, wherein The plastic housing (1) includes a lower cover (11) and an upper cover (12) that is snap-fitted to the lower cover (11) up and down.

3. The surface measuring instrument according to claim 2, characterized in that, On the inner side of the bottom of the lower cover (11), there is an annular groove for accommodating the fixed grid gear assembly (2). On the top of the upper cover (12), there is a window for displaying the liquid crystal screen (4) and a keyhole for loading the button (5).

4. The surface measuring instrument according to claim 2, wherein The fixed grid gear assembly (2) includes a fixed grid plate (21), a fixed grid gear seat (22), and a roller (23). The fixed grid gear seat (22) and the roller (23) are both rotatably arranged in the lower cover (11) through a wheel axle at the central position. The fixed grid plate (21) is glued to the fixed grid gear seat (22). At the bottom of the roller (23), there is a gear that meshes with the fixed grid gear seat (22).

5. The surface measuring instrument according to claim 1, characterized in that The moving grid assembly (3) includes a PCB board (31). On the surface of the PCB board (31), there is a conductive adhesive (32) that can be electrically connected to the liquid crystal screen (4).

6. The surface measuring instrument according to claim 5, characterized in that, On the surface of the PCB board (31), there is a touch switch (33) corresponding to the button (5).

7. The surface measuring instrument according to claim 1, wherein The power supply assembly (6) includes a battery holder (61). On one side of the upper cover (12), there is a socket that can be plugged and installed with the battery holder (61). Two button batteries (62) are loaded in the battery holder (61). At the bottom of the battery holder (61), there is a negative electrode plate (63), a positive electrode plate (64), and a conduction electrode plate (65) that conducts the two button batteries (62) to the moving grid assembly (3).

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