laser line generator

Abstract

This application relates to a laser marking device, comprising: a housing, a circuit board, and a laser module. Both the circuit board and the laser module are housed within the housing, and the laser module and the circuit board are electrically connected. The housing has an exit hole corresponding to the laser module for laser emission. A microcontroller is mounted on the circuit board, and the microcontroller contains a first temperature sensor for detecting the temperature inside the housing. The microcontroller can adjust the output power of the laser module based on the temperature detected by the first temperature sensor. The laser marking device provided by this application, by incorporating a first temperature sensor and actively adjusting the output power of the laser module via the microcontroller, avoids passive changes in the laser module's output power due to ambient temperature. The active adjustment by the microcontroller stabilizes the laser module's output power within a certain range, thereby maintaining stable laser brightness and preventing the laser light from being too dim or too bright, which could affect operation.

Description

Technical Field

[0001] This application relates to the field of measuring tools, and in particular to a laser line marker. Background Technology

[0002] A laser line marker, also known as a laser line scribing device, laser line marking instrument, etc., uses a laser to create a high-brightness fan-shaped surface. When the laser is projected onto an object, it forms a high-brightness laser line, providing users with marking guidance. Because it uses light illumination, it reduces the tedious process of manual marking, improves production efficiency, and avoids the marks left by manual marking. It is commonly used in construction, decoration, home renovation, and installation processes.

[0003] When using a laser marking device, the brightness of the laser beam is significantly affected by the ambient temperature. In high-temperature environments, the brightness of the laser beam dims, resulting in unclear vision and affecting operation. In low-temperature environments, the brightness of the laser beam is too bright, which can be dazzling and affect operation. Utility Model Content

[0004] Therefore, it is necessary to provide a laser line marker that can stably emit laser light with a stable brightness.

[0005] A laser marking device includes: a housing, a circuit board, and a laser module. The circuit board and the laser module are both disposed inside the housing. The laser module and the circuit board are electrically connected. A microcontroller is disposed on the circuit board. The microcontroller has a first temperature sensor for detecting the temperature inside the housing. The microcontroller can adjust the output power of the laser module according to the temperature detected by the first temperature sensor.

[0006] In one embodiment, the housing also contains a battery for powering the circuit board, the microcontroller, the first temperature sensor, and the laser module. The battery is equipped with a second temperature sensor for detecting the temperature of the battery. The microcontroller can control the battery to stop charging when the temperature detected by the second temperature sensor exceeds a preset temperature range.

[0007] In one embodiment, the second temperature sensor is attached to the battery.

[0008] In one embodiment, the second temperature sensor is an NTC sensor.

[0009] In one embodiment, the laser line marker further includes a mounting frame, the housing being detachably mounted on the mounting frame, and the mounting frame having a connector for mounting the laser line marker at a target location.

[0010] In one embodiment, the connector includes a suction cup; and / or, the connector includes a thumbtack; and / or, the connector includes a magnet or a magnetic steel.

[0011] In one embodiment, the connector includes a thumbtack, the thumbtack including a head and a nail portion, the fixing frame having a receiving groove for accommodating the head of the thumbtack, the bottom wall of the receiving groove having a clearance hole for the nail portion of the thumbtack to pass through; the fixing frame having a nail storage portion on its lower side for horizontally placing the thumbtack.

[0012] In one embodiment, a connecting shaft is mounted on the fixing frame, and the fixing frame is rotatable relative to the connecting shaft.

[0013] In one embodiment, the mounting bracket is provided with a mounting groove, and the housing is detachably mounted in the mounting groove.

[0014] In one embodiment, the laser line marker further includes a base plate detachably disposed on the underside of the housing, the base plate having angular scale lines.

[0015] Compared with the prior art, the laser marking instrument provided in this application, by setting a first temperature sensor and actively adjusting the output power of the laser module through a microcontroller, can avoid the laser module being passively affected by the ambient temperature. The active adjustment by the microcontroller can stabilize the output power of the laser module within a certain range, thereby maintaining the stability of the laser brightness and avoiding the laser light being too dim or too bright, which would affect the operation. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is an exploded perspective view of a laser marking device according to an embodiment of this application;

[0018] Figure 2 for Figure 1 The diagram shows a partial structural schematic of the laser marking device.

[0019] Figure 3 This is a perspective view of a laser line marker according to another embodiment of this application;

[0020] Figure 4 This is a structural schematic diagram of a laser marking device according to an embodiment of this application, viewed from the bottom.

[0021] Figure 5 This is a schematic diagram of the structure of a fixing frame according to an embodiment of this application;

[0022] Figure 6 This is a structural block diagram of some electronic components of a laser line marker according to an embodiment of this application;

[0023] Figure 7 The waveforms are shown for PWM with different duty cycles.

[0024] Reference numerals: 10, outer shell; 11, lower shell; 12, upper shell; 121, window; 13, bracket; 14, horizontal bubble; 20, circuit board; 21, microcontroller; 22, first temperature sensor; 30, laser module; 40, battery; 50, second temperature sensor; 60, mounting bracket; 61, mounting groove; 62, receiving groove; 621, clearance hole; 63, nail storage part; 64, pointer; 71, suction cup; 72, thumbtack; 73, magnet; 80, connecting shaft; 90, substrate; 91, angle scale line. Detailed Implementation

[0025] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0026] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application's specification are for illustrative purposes only and do not represent the only possible implementation.

[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0028] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0029] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used in this application includes any and all combinations of one or more of the associated listed items.

[0030] Please see Figures 1 to 6 This application provides a laser marking device, including: a housing 10, a circuit board 20, and a laser module 30. Both the circuit board 20 and the laser module 30 are housed within the housing 10 and are electrically connected. A microcontroller 21 is mounted on the circuit board 20, and a first temperature sensor 22 is installed within the microcontroller 21 to detect the temperature inside the housing 10. The microcontroller 21 can adjust the output power of the laser module 30 based on the temperature detected by the first temperature sensor 22. Since the output power of the laser module 30 changes with ambient temperature, the laser brightness also changes with temperature. This application, by setting the first temperature sensor 22 and actively adjusting the output power of the laser module 30 through the microcontroller 21, avoids the laser module 30 being passively affected by ambient temperature. The active adjustment by the microcontroller 21 stabilizes the output power of the laser module 30 within a certain range, thereby maintaining stable laser brightness and preventing the laser light from being too dim or too bright, which would affect operation.

[0031] It's understandable that the laser brightness is controlled via a PWM waveform. A PWM waveform, consisting of high and low voltage levels, can be simply understood as alternately powering on and off the laser module 30. For example... Figure 7As shown, the upper horizontal line represents powering on the laser module 30, and the lower horizontal line represents powering off the laser module 30. Once the speed reaches a certain level, the light appears constant to the naked eye, similar to the principle of a household incandescent light bulb. The 25%, 50%, and 75% in the diagram represent different duty cycles, meaning the proportion of time the laser is lit. For example, 25% means the laser is lit for a total of 2.5 seconds within 10 seconds, and 50% means the laser is lit for a total of 5 seconds within 10 seconds. The longer the lighting time within a certain period, the greater the output power (the brighter the laser). That is, the larger the duty cycle, the brighter the laser. This application controls the average output power of the laser module 30 by adjusting the pulse duty cycle, thereby achieving active adjustment of the laser brightness.

[0032] It should be noted that the laser module 30 can be entirely housed inside the housing 10, or only partially housed inside the housing 10. The housing 10 can be provided with a light-emitting hole or a light-transmitting part for laser emission, or a through hole for the light-emitting end of the laser module 30 to extend out. This application does not impose any restrictions on this.

[0033] Further, please see Figures 1 to 5 The outer casing 10 also houses a battery 40, which powers electronic components such as the circuit board 20, microcontroller 21, first temperature sensor 22, and laser module 30. A second temperature sensor 50 is mounted on the battery 40 to detect its temperature. The microcontroller 21 can control the battery 40 to stop charging when the temperature detected by the second temperature sensor 50 exceeds a preset range. Since excessively high or low temperatures during charging can damage the battery 40, this embodiment uses a second temperature sensor 50 to detect the battery 40's temperature. When the battery 40's temperature exceeds a preset range (i.e., the battery 40's temperature is abnormal), the charging switch is cut off, thus stopping the battery 40 from charging and preventing damage or even destruction caused by charging at inappropriate temperatures.

[0034] In this embodiment, battery 40 is a lithium-ion battery that can be recharged multiple times.

[0035] Furthermore, the second temperature sensor 50 is attached to the battery 40. In this way, the second temperature sensor 50 can more accurately detect the temperature of the battery 40, avoiding erroneous control of the battery 40 to stop charging due to inaccurate temperature detection.

[0036] Furthermore, the second temperature sensor 50 is an NTC sensor.

[0037] Furthermore, the outer casing 10 includes a lower casing 11 and an upper casing 12, with a cavity formed between the upper casing 12 and the lower casing 11. Components such as the circuit board 20, battery 40, and laser module 30 are all installed within this cavity. By configuring the outer casing 10 as a lower casing 11 and an upper casing 12, it is convenient to install various components within the outer casing 10. In this embodiment, the lower casing 11 and the upper casing 12 are fixedly connected by screws, ensuring a secure connection.

[0038] Furthermore, the outer casing 10 is also provided with a horizontal bubble 14. In this embodiment, the battery 40 is mounted on the lower casing 11, and the lower casing 11 is also provided with a bracket 13. The bracket 13 is mounted above the battery 40, and the horizontal bubble 14 is set on the bracket 13. The upper casing 12 is provided with a window 121 that exposes the horizontal bubble 14.

[0039] Please see Figure 3 Furthermore, the laser road marker also includes a mounting bracket 60, on which the housing 10 is detachably mounted. The mounting bracket 60 is provided with connectors for mounting the laser road marker at a target location. It is understood that the target location refers to the location where the laser road marker is installed, which can be a wall or the ground, etc. Thus, by setting up the mounting bracket 60, the housing 10 and the components (i.e., the main body of the laser road marker) housed within the housing 10 can be fixed, preventing the laser road marker from shaking during use and thus ensuring a stable and reliable reference line.

[0040] Furthermore, in one embodiment, the connector includes a suction cup 71, which can firmly fix the laser marking device at the target position and is easy to use.

[0041] In another embodiment, the connector includes a thumbtack 72, which can firmly fix the laser marking device at the target position, and the suction cup 71 is easy to use.

[0042] In another embodiment, the connector includes a magnet or a magnetic steel 73, so that the laser marking device can be fixed to a material that can attract the magnet or magnetic steel 73 by magnetic attraction. The magnetic connection is not only firm, but also easy to install and disassemble.

[0043] Of course, in other embodiments, the above-mentioned connectors can be used in any combination. For example, the fixing frame 60 may be provided with a suction cup 71 and a thumbtack 72 at the same time, or with a thumbtack 72 and a magnet at the same time, or with a suction cup 71, a thumbtack 72 and a magnet at the same time. This application does not limit this.

[0044] Please see Figures 3 to 5In this embodiment, the connector includes a thumbtack 72, which includes a head and a nail portion. The mounting bracket 60 is provided with a receiving groove 62 for accommodating the head of the thumbtack 72, and the bottom wall of the receiving groove 62 is provided with a clearance hole 621 for the nail portion of the thumbtack 72 to pass through. Thus, in use, the head of the thumbtack 72 can be inserted into the receiving groove 62, and the nail portion of the thumbtack 72 passes through the clearance hole 621 and is fixed in the target position. In this way, the mounting bracket 60 can be installed in the target position using the thumbtack 72.

[0045] Furthermore, the lower side of the mounting bracket 60 is provided with a nail storage section 63 for horizontally placing the thumbtacks 72. This allows the thumbtacks 72 to be stored in the nail storage section 63 when not in use, making the laser marking device easy to store and preventing accidental injury from the thumbtacks 72. When needed, the thumbtacks 72 can simply be removed, which is very convenient. In this embodiment, the nail storage section 63 can be configured as a snap-fit ​​structure to engage the head of the thumbtack 72, making it very convenient to install and remove the thumbtacks 72.

[0046] Furthermore, a connecting shaft 80 is mounted on the mounting bracket 60, allowing the mounting bracket 60 to rotate relative to the connecting shaft 80. Thus, when installing the laser marking device at the target location, the connecting shaft 80 can be used for initial positioning. Then, by rotating the mounting bracket 60, the main body of the laser marking device (the outer casing 10 and the components housed within it) can be adjusted. Finally, it is secured using connectors, thus installing the laser marking device at the target location. This embodiment achieves rapid installation and efficient position adjustment of the laser marking device through the connecting shaft 80. For ease of operation, the upper end of the connecting shaft 80 can be shaped like a knob, or a knob can be provided on the upper end of the connecting shaft 80.

[0047] like Figure 5 As shown, the mounting bracket 60 has a mounting groove 61, and the outer casing 10 is detachably installed in the mounting groove 61. This makes it easy to install the main body of the laser road marker on the mounting bracket 60, and also easy to remove the main body of the laser road marker, thus making it more convenient to use. When using the laser road marker, the mounting bracket 60 can be installed at the target position first, and then the outer casing can be installed on the mounting bracket 60; alternatively, the outer casing can be installed on the mounting bracket 60 first, and then the mounting bracket 60 can be installed at the target position. Alternatively, the laser road marker can be used without the mounting bracket 60.

[0048] Furthermore, the laser line marker also includes a base plate 90 detachably mounted on the lower side of the housing 10, with angle scale lines 91 provided on the base plate 90. This allows for line marking at different angles. In use, one end of the laser line marker can be fixed using the connecting shaft 80, and then the fixing bracket 60 can be rotated to adjust the laser line marker to a suitable angle before fixing it in place. This allows for line marking at different angles, making it very convenient to use.

[0049] Furthermore, a pointer 64 coaxial with the laser can be installed on the mounting bracket 60. In this way, the installation angle of the mounting bracket 60 at the target position can be adjusted by the indication of the pointer 64 when the laser is not turned on, which is very convenient.

[0050] In this embodiment, the substrate 90 is provided with angle scale lines 91 from 0° to 90°, but it is not limited to this. In other embodiments, the substrate 90 may also be provided with angle scale lines 91 from 0° to 180°.

[0051] The substrate 90 can be connected below the mounting bracket 60 or directly below the housing 10; this application does not impose any limitation on this. Furthermore, the substrate 90 may have perforated holes corresponding to the connectors to avoid obstructing the connectors, thereby ensuring that the connectors can connect the mounting bracket 60 to the target position.

[0052] Furthermore, the substrate 90 can be set as a transparent plate to avoid visual obstruction of the installation of the laser line marker.

[0053] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0054] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the scope of protection of this application. Therefore, the patent protection scope of this application should be determined by the appended claims.

Claims

1. A laser marking instrument, characterized in that, include: The system comprises a housing, a circuit board, and a laser module. The circuit board and the laser module are both housed within the housing, and the laser module and the circuit board are electrically connected. The feature is that the circuit board is equipped with a microcontroller, and the microcontroller is equipped with a first temperature sensor to detect the temperature inside the housing. The microcontroller can adjust the output power of the laser module according to the temperature detected by the first temperature sensor.

2. The laser marking device according to claim 1, characterized in that, The housing also contains a battery, which powers the circuit board, the microcontroller, the first temperature sensor, and the laser module. The battery is equipped with a second temperature sensor, which detects the temperature of the battery. The microcontroller can control the battery to stop charging when the temperature detected by the second temperature sensor exceeds a preset temperature range.

3. The laser marking device according to claim 2, characterized in that, The second temperature sensor is attached to the battery.

4. The laser marking device according to claim 2, characterized in that, The second temperature sensor is an NTC sensor.

5. The laser marking instrument according to claim 1, characterized in that, The laser line marker also includes a mounting frame, the outer casing of which is detachably mounted on the mounting frame, and the mounting frame is provided with a connector for mounting the laser line marker at the target position.

6. The laser marking device according to claim 5, characterized in that, The connector includes a suction cup; And / or, the connector includes a thumbtack; And / or, the connector includes a magnet or a magnetic steel.

7. The laser marking device according to claim 6, characterized in that, The connector includes a thumbtack, which includes a head and a nail portion. The fixing frame is provided with a receiving groove for accommodating the head of the thumbtack, and the bottom wall of the receiving groove is provided with a clearance hole for the nail portion of the thumbtack to pass through. The lower side of the fixing frame is provided with a nail storage section for horizontally placing the thumbtacks.

8. The laser marking device according to claim 5, characterized in that, A connecting shaft is mounted on the fixed frame, and the fixed frame can rotate relative to the connecting shaft.

9. The laser marking device according to claim 5, characterized in that, The mounting bracket is provided with a mounting groove, and the outer shell is detachably installed in the mounting groove.

10. The laser marking instrument according to claim 1, characterized in that, The laser line marker also includes a base plate detachably disposed on the lower side of the housing, and the base plate is provided with angle scale lines.

Images