Laser paper weight

Abstract

The utility model discloses a laser paper weight. The circuit board module, the power supply module and the light source module are arranged in a cavity of the shell; the paper weight lens module is arranged on the first side face of the shell and used for transmitting laser signals emitted by the light source module outwards; the key module is arranged on the second side surface of the shell and is used for receiving an external control signal to control the working state of the circuit board module; the display and charging interface module is arranged on the third side surface of the shell and is used for displaying the electric quantity information of the power supply module and accessing an external input circuit to charge the power supply module; wherein after the control circuit board module receives an external control signal, the light source module is controlled to realize switching of a plurality of working modes, and the technical problems that the working mode of the laser paper weight is single, and the user experience is poor due to the fact that a user cannot be reminded of the remaining electric quantity in the related technology are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to stationery equipment technical field especially is related to a laser ruler. BACKGROUND

[0002] The ruler is a kind of writing auxiliary article used from ancient times in China, it is usually used to press down paper when writing, so that paper can be flat and writing process is not easy to move. With the development of science and technology, in the related art, laser ruler has been applied in market, laser ruler is emitted by multiple laser sources Multiple red laser light rays make that laser ruler not only play the role of ordinary ruler, and multiple red laser light rays can form writing auxiliary line on paper surface, help user to write positioning. However, laser ruler in the related art often cannot provide multiple modes of writing auxiliary line in use, and cannot effectively provide laser ruler remaining working time display for user, cannot timely remind user to charge, cannot provide good user experience for user.

[0003] Therefore, how to solve the technical problem that laser ruler in the related art is single in working mode and cannot provide good user experience for user becomes the technical problem that the person skilled in the art needs to solve. SUMMARY

[0004] The utility model provides a kind of laser ruler, to solve the technical problem that laser ruler in the related art is single in working mode and cannot prompt user remaining power and bring poor user experience.

[0005] A kind of laser ruler in the utility model, it includes:

[0006] Shell, the shell is provided with cavity;

[0007] Circuit board module, fixedly set in the cavity;

[0008] Power module, fixedly set in the cavity, for providing working power supply for the circuit board module;

[0009] Light source module, fixedly set in the cavity, and with the circuit board module electrically connected, to receive the control signal of the circuit board module and realize the switching of multiple working modes;

[0010] Ruler lens module, embedding fixedly set in the first side surface of the shell, for transmitting laser signal emitted by the light source module outward;

[0011] Key module, fixedly set in the second side surface of the shell, and with the circuit board module electrically connected, for receiving external control signal and transmitting to the circuit board module;

[0012] A display and charging interface module is fixedly arranged on the third side of the shell and electrically connected with the circuit board module, and is used for displaying the power information of the power module and connecting an external power supply to charge the power module.

[0013] The laser ruler has at least the following beneficial effects:

[0014] The laser ruler has the following technical effects: the laser ruler is provided with a shell, a circuit board module arranged in a cavity of the shell, a power module, and a light source module; the laser ruler further comprises a ruler lens module arranged on a first side of the shell and used for transmitting laser signals emitted by the light source module outward; a key module arranged on a second side of the shell and used for receiving an external control signal to control the working state of the circuit board module; a display and charging interface module arranged on a third side of the shell and used for displaying the power information of the power module and connecting an external input circuit to charge the power module; and the control circuit board module receives the external control signal to control the light source module to switch between multiple working modes.

[0015] According to the laser ruler provided in the embodiments of the present application, the light source module comprises a laser lamp holder and a plurality of laser lamp units, and the plurality of laser lamp units are all fixed on the laser lamp holder.

[0016] The plurality of laser lamp units comprise one or more laser LEDs, and the interval between two adjacent laser LEDs in the laser lamp unit formed by the plurality of laser LEDs is a first interval; the interval between two adjacent laser lamp units is a second interval or a third interval.

[0017] According to the laser ruler of some other embodiments of the utility model, multiple laser lamp units include first laser lamp unit, second laser lamp unit, third laser lamp unit, fourth laser lamp unit, fifth laser lamp unit, sixth laser lamp unit, seventh laser lamp unit, eighth laser lamp unit and ninth laser lamp unit, wherein, the interval of first laser lamp unit and second laser lamp unit is second interval, the interval of second laser lamp unit and third laser lamp unit is second interval, the interval of third laser lamp unit and fourth laser lamp unit is second interval, the interval of fourth laser lamp unit and fifth laser lamp unit is second interval, the interval of fifth laser lamp unit and sixth laser lamp unit is second interval, the interval of sixth laser lamp unit and seventh laser lamp unit is third interval, the interval of seventh laser lamp unit and eighth laser lamp unit is second interval, and the interval of eighth laser lamp unit and ninth laser lamp unit is second interval.

[0018] According to the laser ruler of some other embodiments of the utility model, second interval is greater than first interval, third interval is greater than second interval, and first interval, second interval and third interval are in arithmetic progression.

[0019] According to the laser ruler of some other embodiments of the utility model, display and interface module includes LCD display screen and TPYE-C interface, and LCD display screen and TPYE-C interface are embedded on the third side of shell.

[0020] According to the laser ruler of some other embodiments of the utility model, circuit board module includes main control circuit, display drive circuit, adjustment control circuit, charging circuit, light source power supply circuit and circuit substrate, main control circuit, display drive and voltage detection circuit, adjustment control circuit, charging circuit and light source power supply circuit are arranged on circuit substrate, display drive and voltage detection circuit are electrically connected with main control circuit, LCD display screen and charging circuit respectively, charging circuit is electrically connected with power module, adjustment control circuit is electrically connected with main control circuit and button module respectively, and main control circuit is electrically connected with light source module.

[0021] According to the laser ruler of some other embodiments of the utility model, power module includes battery and battery fixing plate, battery fixing plate is used to fix battery, battery is connected with charging circuit, main control circuit, display drive and voltage detection circuit, adjustment control circuit and light source power supply circuit respectively, and is used to provide working power supply.

[0022] According to other embodiments of the present invention, the laser ruler module includes a plurality of touch buttons embedded in the second side of the housing, and the plurality of touch buttons are electrically connected to the adjustment control circuit.

[0023] According to other embodiments of the laser ruler of the present invention, the plurality of touch buttons include a power button, a brightness adjustment button, a mode adjustment button, and a return button; the power button, the brightness adjustment button, the mode adjustment button, and the return button are respectively electrically connected to the adjustment control circuit;

[0024] The switch button is used to start or stop the circuit board module, the brightness adjustment button is used to adjust the brightness of the light source module, the mode adjustment button is used to adjust the working mode of the light source module, and the return button is used to switch the current working mode of the light source module back to the previous working mode.

[0025] According to other embodiments of the present invention, the laser ruler lens module includes a lens baffle and multiple lenses;

[0026] Multiple lenses are respectively fixed to the light transmission outlet of the light source module, and the lens baffle is embedded and fixed to the first side of the housing. Attached Figure Description

[0027] Figure 1 This is an exploded view of a specific embodiment of the laser ruler of this utility model;

[0028] Figure 2 This is a three-dimensional structural schematic diagram of a specific embodiment of the laser ruler of this utility model;

[0029] Figure 3 This is a front view of a specific embodiment of a laser ruler according to a utility model;

[0030] Figure 4 This is a schematic diagram of the module composition of a specific embodiment of the circuit board module 200 in a laser ruler according to an embodiment of the present invention;

[0031] Figure 5 This is a schematic diagram of the circuit structure of a specific embodiment of the main control chip in the main control circuit of a laser ruler according to this utility model.

[0032] Figure 6 This is a schematic diagram of the circuit structure of a specific embodiment of the control circuit of the main control circuit in a laser ruler according to this utility model.

[0033] Figure 7 This is a schematic diagram of the circuit structure of a specific embodiment of the adjustment and control circuit in a laser ruler according to this utility model;

[0034] Figure 8 is a specific embodiment circuit structure schematic diagram of a light source power supply circuit in a laser ruler according to an embodiment of the present application;

[0035] Figure 9 is a specific embodiment circuit structure schematic diagram of a display driving and voltage detection circuit in a laser ruler according to an embodiment of the present application;

[0036] Figure 10 is a specific embodiment circuit structure schematic diagram of a charging circuit in a laser ruler according to an embodiment of the present application;

[0037] Figure 11 is a first embodiment schematic diagram of forming a writing auxiliary line by two laser rulers according to an embodiment of the present application;

[0038] Figure 12 is a second embodiment schematic diagram of forming a writing auxiliary line by two laser rulers according to an embodiment of the present application;

[0039] Figure 13 is a third embodiment schematic diagram of forming a writing auxiliary line by two laser rulers according to an embodiment of the present application;

[0040] Figure 14 is a fourth embodiment schematic diagram of forming a writing auxiliary line by two laser rulers according to an embodiment of the present application;

[0041] Figure 15 is a fifth embodiment schematic diagram of forming a writing auxiliary line by two laser rulers according to an embodiment of the present application. DETAILED DESCRIPTION

[0042] The concept and the technical effects of the present application will be described in detail below in combination with embodiments, so as to fully understand the purpose, features and effects of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0043] In the description of the embodiments of the present application, if "several" is involved, it means one or more, if "multiple" is involved, it means two or more, if "greater than", "less than", "exceeds" is involved, it should be understood as not including the number itself, if "above", "below", "within" is involved, it should be understood as including the number itself. If "first", "second" is involved, it should be understood as being used to distinguish technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.

[0044] Referring to Figure 1 and Figure 2 The utility model discloses a laser ruler, it includes casing 100, circuit board module 200, power module 300, light source module 400, ruler lens module 500, button module 600 and display and charging interface module 700, wherein circuit board module 200, power module 300 and light source module 400 all set up in the cavity of casing 100, power module 300 is electrically connected with circuit board module 200, is used for providing working power supply for circuit board module 200, circuit board module 200 is electrically connected with light source module 400, is used for output control signal to control light source module 400 realizes the switching of multiple working modes, ruler lens module 500 is embedded and sets up in the first side of casing 100, and the first side is the side of the light emitting direction of light source module 400, and then the laser signal that light source module 400 emits is transmitted outward, button module 600 is fixedly set up in the second side of casing 100, still with circuit board module electric connection, it is used for receiving external control signal and transmitting to circuit board module 200, and circuit board module 200 adjusts the working mode of light source module 400 according to the external control signal received to adjust light source module 400 to target working mode, display and charging interface module 700 is fixed in the third side of casing 100, and display and charging interface module 700 are electrically connected with circuit board module 200, and it is used for showing the power information of power module 300 and is used for accessing external power supply and charges power module 300. Wherein, in order to the beauty of the utility model embodiment laser ruler, the first side, the second side, the third side of casing 100 usually are 3 different sides. The utility model discloses a laser ruler, and through setting up button module 600 and receiving external control signal transmission to circuit board module 200, and then circuit board module 200 controls light source module and switches between multiple working modes according to the external control signal received, provides multiple mode writing auxiliary line for the user, simultaneously, setting up display and charging interface module 700 is used for showing the power information of power module 300 and provides the charging interface of power module 300 and effectively improves the user experience feeling, and it solves the technical problem of the single working mode of laser ruler in the related art, cannot provide laser ruler power information for the user and then leads to the poor user experience feeling.

[0045] Referring to Figure 1 and Figure 3In some embodiments, in order to realize the stability of the light source module and the diversity of the working mode. In the embodiment, the light source module 400 comprises a laser lamp holder 410 and a plurality of laser lamp units 420; wherein the plurality of laser lamp units comprise one or more laser LEDs, and in the laser lamp unit composed of a plurality of laser LEDs, the spacing between two adjacent laser LEDs is a first spacing, and the spacing between two adjacent laser lamp units is a second spacing or a third spacing. In the embodiment, the laser lamp holder 410 is provided with a plurality of mounting structures for fixing the laser LEDs in each laser lamp unit 420, which can be fixed by screwing or dispensing. In some specific embodiments, the plurality of laser lamp units 420 comprises a first laser lamp unit 421, a second laser lamp unit 422, a third laser lamp unit 423, a fourth laser lamp unit 424, a fifth laser lamp unit 425, a sixth laser lamp unit 426, a seventh laser lamp unit 427, an eighth laser lamp unit 428 and a ninth laser lamp unit 429; wherein the first laser lamp unit 421 comprises 1 laser LED, the second laser lamp unit 422 comprises 9 laser LEDs, the third laser lamp unit 423 comprises 1 laser LED, the fourth laser lamp unit 424 comprises 3 laser LEDs, the fifth laser lamp unit 425 comprises 1 laser LED, the sixth laser lamp unit 426 comprises 2 laser LEDs, the seventh laser lamp unit 427 comprises 2 laser LEDs, the eighth laser lamp unit 428 comprises 2 laser LEDs, and the ninth laser lamp unit comprises 1 laser LED; specifically, the spacing between the first laser lamp unit 421 and the second laser lamp unit 422 is the second spacing, the spacing between the second laser lamp unit 422 and the third laser lamp unit 423 is the second spacing, the spacing between the third laser lamp unit 423 and the fourth laser lamp unit 424 is the second spacing, the spacing between the fourth laser lamp unit 424 and the fifth laser lamp unit 425 is the second spacing, the spacing between the fifth laser lamp unit 425 and the sixth laser lamp unit 426 is the second spacing, the spacing between the sixth laser lamp unit 426 and the seventh laser lamp unit 427 is the third spacing, the spacing between the seventh laser lamp unit 427 and the eighth laser lamp unit 428 is the second spacing, and the spacing between the eighth laser lamp unit 428 and the ninth laser lamp unit 429 is the second spacing. In specific applications, the values of the first spacing, the second spacing and the third spacing can be set according to the application scene of the laser ruler, and the first spacing is less than the second spacing, the second spacing is less than the third spacing, and the first spacing, the second spacing and the third spacing form an arithmetic relationship. In the embodiment, by setting a plurality of laser lamp units and a spacing, and by controlling and switching different working modes of each laser LED in the plurality of laser lamp units, the requirements of various writing scenes can be met, the setting of laser LEDs is effectively reduced, the power consumption is reduced, and the production and use cost of the laser ruler is effectively reduced.

[0046] Referring toFigure 1 In some embodiments, the ruler lens module 500 includes a ruler baffle 510 and a plurality of lenses 520 fixed on the light ray transmission outlet of the light source module 400 for collimating and focusing the laser light emitted by the light source module 400 and then transmitting it outward. The ruler baffle 510 is embedded and fixed on the first side of the shell 100 for further fixing the plurality of lenses 520 and is provided with corresponding through holes for transmitting the laser light transmitted by the plurality of lenses 520 outward.

[0047] Referring to Figure 1 In some embodiments, the display and interface module 700 includes an LCD display screen 710 and a TPYE-C interface 720, both of which are embedded and arranged on the third side of the shell 100. The display screen 710 is electrically connected to the circuit board module 200 described in the above embodiments and is used to display the power information of the power module 300. The TPYE-C interface 720 is electrically connected to the circuit board module 200 and is used to access an external power supply to charge the power module 300. In this embodiment, the third side and the first side are the front and back of the shell 100, and the second side is the upper surface of the shell 100, so that the key module 600 is on the upper surface of the shell 100 to provide a convenient operation space for the user during use.

[0048] Referring to Figure 4 In some embodiments, the circuit board module 200 includes a circuit substrate and a main control circuit, a display driving circuit, an adjustment control circuit, a charging circuit, and a light source power supply circuit arranged on the circuit substrate, respectively. In this embodiment, the display driving and voltage detection circuit is electrically connected to the main control circuit, the charging circuit, and the LCD display screen described in the above embodiments. The charging circuit is connected to the battery in the power module. The display driving and voltage detection circuit is used to receive the control of the main control circuit, display the power information of the battery on the LCD display screen, and detect the charging voltage of the battery on the charging circuit. The adjustment control circuit is electrically connected to the main control circuit and the key module, and the main control module is electrically connected to the light source module. The adjustment control circuit is used to receive an external control signal and transmit it to the main control module. The main control module controls the working state of each laser LED in the light source module 400 according to the received control signal, so that the light source module 400 realizes the switching of multiple working modes. The light source power supply circuit is electrically connected to the main control circuit and the light source module 400 and is controlled by the main control circuit to provide working power for the light source module 400.

[0049] Referring to Figure 1In some embodiments, the power module 300 described in the above embodiments comprises a battery 310 and a battery fixing plate 320; the battery fixing plate 320 is used to fix the battery 310 in the cavity of the shell 100, so that the battery 100 can be reliably fixed, preventing the battery 310 from falling off due to movement, vibration and other factors during use of the laser ruler, thereby causing the laser ruler to malfunction. In this embodiment, the battery 310 is electrically connected to the main control circuit, the display driving and voltage detection circuit, the adjustment control circuit, and the light source power supply circuit, respectively, for providing working power for each power-consuming circuit.

[0050] With reference to Figure 1 and Figure 2 In some embodiments, the key module 600 comprises a plurality of touch keys embedded in the second side of the shell 100, wherein the second side is the upper surface of the shell 100, so that the user can control the operation of the laser ruler through the plurality of touch keys. In this embodiment, the plurality of touch keys are electrically connected to the adjustment control circuit described in the above embodiments, and then the external control signals received by the touch keys are transmitted to the main control circuit through the adjustment control circuit, finally realizing the working mode control of the plurality of laser LEDs. With reference to Figure 2 In a specific embodiment, the plurality of touch keys comprise a switch key, a brightness adjustment key, a mode adjustment key, and a return key, and the above four touch keys are electrically connected to the adjustment control circuit, so that the switch key is used to receive the user's opening or closing control signal, for controlling the opening or closing of the main control circuit in the circuit board module 200, realizing the opening or closing of the laser ruler; the brightness adjustment key is used to receive the user's brightness adjustment control signal, and after being transmitted to the main control circuit through the adjustment control circuit, the main control circuit realizes the light emitting brightness adjustment of each laser LED in the light source module 400; the mode adjustment key is used to receive the user's mode adjustment control signal, and after being transmitted to the main control circuit through the adjustment control circuit, the main control circuit realizes the switching of the working mode by controlling the on-off state of each laser LED in the light source module 400; the return key is used to receive the user's mode return control signal, and after being transmitted to the main control circuit through the adjustment control circuit, the main control circuit switches the working mode of each laser LED in the light source module 400 to the previous working mode by controlling the on-off state of each laser LED, so that when the user adjusts to the required working mode and accidentally touches the mode adjustment key again, the working mode of the light source module 400 can be switched back to the previous working mode through the return key, providing a good user experience.

[0051] With reference to Figures 5 to 10The following describes each circuit unit in the circuit board module 200 in the above embodiment through a specific embodiment. It should be noted that the embodiment is only a specific implementation of the circuit part of the laser ruler of the present application, and the protection scope of the laser ruler of the present application is not limited to the embodiment. Specifically, refer to Figure 5 and Figure 6 The main control circuit includes a main control chip of HLX32FW40-LQPF48 and a plurality of MOS switch circuits, wherein the number of the MOS switch circuits is consistent with the number of the plurality of laser LEDs, and the plurality of laser LEDs are controlled respectively. Refer to Figure 7 The adjustment control circuit includes a chip of HLS028-TSSOP20. Refer to Figure 8 The light source power supply circuit includes a voltage reduction and stabilization circuit, which is used to output the voltage output by the battery after voltage reduction and stabilization to the light source module, and provide working voltage for each laser LED. Refer to Figure 9 The display driving and voltage detection circuit includes a chip of HLX30F95 SSOP28, which is used to drive the LCD display screen to display battery information, and detect voltage information of the charging circuit during charging of the battery. Refer to Figure 10 The charging circuit includes a charging management chip, which is controlled by the main control chip and is used to charge the battery by connecting an external power supply.

[0052] Refer to Figures 11 to 15 The following describes the use effect of the laser ruler of the present application through some embodiments. When two laser rulers of the present application are used simultaneously, the two laser rulers are placed in a perpendicular relationship, and the laser light emitted by the two laser rulers is perpendicular to each other, forming a writing auxiliary line. The working mode of the two laser rulers is adjusted by the key module, so that the laser light emitted by the two laser rulers forms an expected writing auxiliary line on the target paper, thereby meeting the writing requirement. Refer to Figure 11 , Figure 11 In the embodiment, the two laser rulers are placed at 90 degrees to each other, and the two laser rulers are adjusted to be in the same working mode, and then the light emitted forms a 6*6 matrix structure of the same size on the target paper. Refer to Figure 12 , Figure 12 In the embodiment, the two laser rulers are placed at 90 degrees to each other, and the two laser rulers are adjusted to be in different working modes, and then the light emitted forms a 6*4 matrix structure of the same size on the target paper. Refer to Figure 13 , Figure 13In the sixth embodiment, two laser rulers are placed at 90 degrees to each other, and are adjusted to be in different working modes respectively, so that the light emitted forms a 6*10 matrix structure of same-size rectangles on the target paper. Figure 14 , Figure 14 In the seventh embodiment, two laser rulers are placed in parallel, and are adjusted to be in the same working mode, so that the light emitted forms a plurality of same-size writing auxiliary lines on the target paper. Figure 15 , Figure 15 In the seventh embodiment, two laser rulers are placed in parallel, and are adjusted to be in the same working mode, so that the light emitted forms a plurality of same-size writing auxiliary lines on the target paper.

[0053] The embodiments of the present application are described in detail above with reference to the drawings, but the present application is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present application. Furthermore, the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

Claims

1. A laser ruler, characterized by, The utility model relates to a laser distance measuring device, including: A shell is provided with a cavity; A circuit board module is fixedly arranged in the cavity; A power module is fixedly arranged in the cavity and is used for providing working power supply for the circuit board module; A light source module is fixedly arranged in the cavity and is electrically connected with the circuit board module to receive the control signal of the circuit board module to realize the switching of multiple working modes; A ruler lens module is embedded and fixedly arranged on the first side of the shell and is used for transmitting the laser signal emitted by the light source module outward; A key module is fixedly arranged on the second side of the shell and is electrically connected with the circuit board module and is used for receiving the external control signal and transmitting to the circuit board module; A display and charging interface module is fixedly arranged on the third side of the shell and is electrically connected with the circuit board module and is used for displaying the power information of the power module and is used for accessing the external power supply to charge the power module.

2. Laser ruler according to claim 1, characterized in that The light source module includes a laser lamp holder and a plurality of laser lamp units, and the plurality of laser lamp units are fixed on the laser lamp holder; Wherein, the plurality of laser lamp units include one or more laser LEDs, and the pitch of adjacent two laser LEDs in the laser lamp unit composed of a plurality of laser LEDs is a first pitch; the pitch of adjacent two laser lamp units is a second pitch or a third pitch.

3. The laser ruler of claim 2, wherein, The plurality of laser lamp units include a first laser lamp unit, a second laser lamp unit, a third laser lamp unit, a fourth laser lamp unit, a fifth laser lamp unit, a sixth laser lamp unit, a seventh laser lamp unit, an eighth laser lamp unit and a ninth laser lamp unit; wherein, the pitch of the first laser lamp unit and the second laser lamp unit is the second pitch, the pitch of the second laser lamp unit and the third laser lamp unit is the second pitch, the pitch of the third laser lamp unit and the fourth laser lamp unit is the second pitch, the pitch of the fourth laser lamp unit and the fifth laser lamp unit is the second pitch, the pitch of the fifth laser lamp unit and the sixth laser lamp unit is the second pitch, the pitch of the sixth laser lamp unit and the seventh laser lamp unit is the third pitch, the pitch of the seventh laser lamp unit and the eighth laser lamp unit is the second pitch, and the pitch of the eighth laser lamp unit and the ninth laser lamp unit is the second pitch.

4. Laser ruler according to claim 2 or 3, characterized in that The second pitch is greater than the first pitch, the third pitch is greater than the second pitch, and the first pitch, the second pitch and the third pitch are in an arithmetic progression.

5. Laser ruler according to any one of claims 1 to 3, characterized in that The display and interface module includes an LCD display screen and a TPYE-C interface, and the LCD display screen and the TPYE-C interface are embedded on the third side of the shell.

6. The laser ruler of claim 5, wherein, The circuit board module comprises a main control circuit, a display driving circuit, a regulating control circuit, a charging circuit, a light source power supply circuit and a circuit substrate; the main control circuit, the display driving and voltage detection circuit, the regulating control circuit, the charging circuit and the light source power supply circuit are arranged on the circuit substrate; the display driving and voltage detection circuit is electrically connected with the main control circuit, the LCD display screen and the charging circuit respectively; the charging circuit is electrically connected with the power module; the regulating control circuit is electrically connected with the main control circuit and the key module respectively; the main control circuit is electrically connected with the light source module.

7. The laser ruler of claim 6, wherein, The power module comprises a battery and a battery fixing plate, the battery fixing plate is used for fixing the battery, and the battery is connected with the charging circuit, the main control circuit, the display driving and voltage detection circuit, the regulating control circuit and the light source power supply circuit respectively, and is used for providing working power supply.

8. Laser ruler according to claim 6 or 7, characterized in that The key module comprises a plurality of touch keys embedded in the second side of the shell, and the plurality of touch keys are electrically connected with the regulating control circuit.

9. The laser ruler of claim 8, wherein, The plurality of touch keys comprise a switch key, a brightness adjusting key, a mode adjusting key and a return key; the switch key, the brightness adjusting key, the mode adjusting key and the return key are electrically connected with the regulating control circuit respectively; The switch key is used for starting or closing the circuit board module, the brightness adjusting key is used for adjusting the brightness of the light source module, the mode adjusting key is used for adjusting the working mode of the light source module, and the return key is used for switching the current working mode of the light source module back to the previous working mode.

10. Laser ruler according to any one of claims 1 to 3, characterized in that The ruler mirror module comprises a lens baffle and a plurality of lenses; The plurality of lenses are fixed on the light ray transmission outlets of the light source module respectively, and the lens baffle is embedded and fixed on the first side of the shell.

Images