Core structure for laser demarcation device and laser demarcation device

Abstract

The utility model relates to a movement structure for a laser demarcation device and the laser demarcation device. The movement structure comprises a hanging bracket, a counterweight pendulum body, a rotating shaft I and a rotating shaft II, bearings I are mounted on the left and right sides of the hanging bracket; two ends of the rotating shaft I respectively penetrate through the bearings I and form rotating support for the rotating shaft through the bearings I; connecting lugs are arranged on the front side and the rear side of the upper end of the balance weight pendulum body, second bearings are arranged in the connecting lugs, and the middle of the first rotating shaft is fixedly connected with the middle of the second rotating shaft. The two ends of the second rotating shaft penetrate through the second bearings correspondingly, and the second rotating shaft is rotationally supported through the second bearings. Connecting gaps are formed between the first rotating shaft and the first bearing and between the second rotating shaft and the second bearing, glue injection grooves are formed in the end faces of the first rotating shaft and the second rotating shaft, and at least one end of each glue injection groove is open and communicated with the corresponding connecting gap. And when glue is dispensed into the glue injection groove, the glue can be diffused to a connecting gap between the bearing inner ring and the rotating shaft along the glue injection groove, so that the glue is effectively prevented from entering a ball structure of the bearing.

Description

Technical Field

[0001] The utility model relates to the technical field of measuring equipment, in particular to a movement structure for a laser line projector and the laser line projector. Background Art

[0002] The horizontal projection instrument mainly emits horizontal visible light and / or vertical visible light through a laser to mark horizontal or vertical lines on the target surface. In order to adapt to the automatic correction of small angle inclination, the existing horizontal projection instrument movement is provided with a suspension structure and a horizontal shaft and a vertical shaft with bearings at both ends in the horizontal and vertical directions, thereby utilizing the gravity of the counterweight block and adaptively rotating the degree of freedom so that the center line of the movement remains plumb.

[0003] In the prior art, there are two main ways to fix the bearing to the shaft. One is to install the bearing on the end of the shaft and then directly apply glue to the center of the shaft and bearing. In this method, since the end faces of the bearing and the shaft are basically in the same plane, after applying glue, the glue will not immediately penetrate into the connection between the bearing and the shaft. The glue will form a water drop shape on the end face of the shaft. At this time, the upper end face of the glue will be higher than the end face of the shaft, which makes it easy for the glue to diffuse along the surroundings into the ball structure of the bearing, thereby affecting the normal operation of the bearing, and further affecting the accuracy of the laser line projection instrument.

[0004] The other is to set a threaded structure at the end of the shaft and fix the bearing on the shaft through a nut threaded fixed connection. This fixing method is unstable due to the threaded connection. After multiple vibrations or falls, it is easy to loosen, which affects the accuracy of the line casting. In order to prevent loosening caused by the threaded connection, some manufacturers inject glue at the end face of the nut on the basis of the nut fixation to improve the stability of the threaded connection. However, this method is relatively expensive and the process is complicated, which affects the work efficiency. In addition, in the direct glue point fixing method, the glue is easy to diffuse along the surroundings into the ball structure of the bearing, thereby affecting the normal operation of the bearing and the accuracy of the line casting. At the same time, the use of nuts to fix increases the length of the shaft.

[0005] Therefore, it is urgent to provide a movement structure for a laser line projector and a laser line projector in which a rotating shaft and a bearing are firmly connected and the line projection accuracy is not affected. Utility Model Content

[0006] 1. Technical issues to be resolved

[0007] In view of the above-mentioned shortcomings and deficiencies of the prior art, the utility model provides a movement structure for a laser line projector and a laser line projector, which solves the technical problem that the bearing and the rotating shaft connection stability of the movement structure for the laser line projector is poor, which affects the line projection accuracy.

[0008] (II) Technical solution

[0009] In order to achieve the above-mentioned purpose, the main technical solutions adopted by the utility model include:

[0010] In a first aspect, an embodiment of the utility model provides a movement structure for a laser line projector, comprising a hanger, a rotating shaft assembly and a counterweight pendulum, wherein the counterweight pendulum is movably connected to the hanger through the rotating shaft assembly;

[0011] The rotating shaft assembly includes a rotating shaft 1 and a rotating shaft 2 which are vertically connected to each other, wherein the rotating shaft 1 is movably connected to the hanger through a bearing 1 arranged at both ends thereof, and the rotating shaft 2 is movably connected to the connecting ear at the upper end of the counterweight pendulum body through a bearing 2 arranged at both ends thereof, and the end surfaces of the rotating shaft 1 and the rotating shaft 2 are radially provided with glue injection grooves.

[0012] Optionally, the glue injection groove is a straight-line flat-cut groove, and both ends of the flat-cut groove are open to communicate with the connecting gap between the rotating shaft 1 and the inner ring of the bearing 1 or between the rotating shaft 2 and the inner ring of the bearing 2.

[0013] Optionally, two ends of the rotating shaft 1 are provided with step 1 corresponding to the bearing 1 installation area to locate the installation position of the bearing 1, and two ends of the rotating shaft 2 are provided with step 2 corresponding to the bearing 2 installation area to locate the installation position of the bearing 2;

[0014] A connecting block is provided in the middle of rotating shaft 2, and a through hole for rotating shaft 1 to pass through is opened at the center position of the connecting block along the radial direction of rotating shaft 2, and a convex ring is provided on rotating shaft 1 corresponding to the connecting block installation area to locate the installation position of the connecting block; or, a connecting block is provided in the middle of rotating shaft 1, and a through hole for rotating shaft 2 to pass through is opened at the center position of the connecting block along the radial direction of rotating shaft 1, and a convex ring is provided on rotating shaft 2 corresponding to the connecting block installation area to locate the installation position of the connecting block.

[0015] Optionally, a shaft fixing screw hole communicating with the through hole is provided on the connection block, a shaft fixing screw is screwed into the shaft fixing screw hole, and an end of the shaft fixing screw abuts against and fixes the first shaft or the second shaft;

[0016] Glue is dripped into the gap between the rotating shaft fixing screw and the inner wall of the rotating shaft fixing screw hole to bond and fix the rotating shaft fixing screw and the connecting block.

[0017] Optionally, a laser emitting component cavity is provided in the middle of the counterweight pendulum body along the front-rear direction, and a laser emitting component is arranged in the laser emitting component cavity;

[0018] A vertical adjustment screw hole is provided on the front side wall of the counterweight pendulum body below the laser emitting component cavity, and a vertical adjustment screw is provided in the vertical adjustment screw hole;

[0019] The left side wall or the right side wall of the counterweight pendulum body is provided with two horizontal adjustment screw holes arranged up and down and connected with the laser emitting component cavity, and the two horizontal adjustment screw holes are provided with horizontal adjustment screws;

[0020] The counterweight pendulum body is provided with a laser emitting component fixing screw hole communicated with the laser emitting component cavity in the middle of the two horizontal adjustment screw holes, and a laser emitting component fixing screw is provided in the laser emitting component fixing screw hole, and the laser emitting component fixing screw is a ball screw.

[0021] In a second aspect, an embodiment of the utility model provides a laser line projector, comprising a base, a housing and the above-mentioned core structure for the laser line projector;

[0022] A plurality of support rods are arranged on the base, the upper ends of which are fixedly connected to the hanger of the core structure of the laser line projector, and the outer shell cover is arranged on the periphery of the core structure of the laser line projector and is detachably connected to the base.

[0023] Optionally, it also includes a power supply installed on the base, a PCB board installed on the upper surface of the hanger, and a laser emitting component power supply circuit board installed on the counterweight pendulum body;

[0024] The power supply is electrically connected to the PCB board, the PCB board is electrically connected to the laser emitting component power supply circuit board, the laser emitting component power supply circuit board is electrically connected to the laser emitting component through a wire, and a power switch 1 is arranged on the PCB board.

[0025] Optionally, a circular copper sheet is fixed to the lower end of the counterweight pendulum body, a copper spring ring is sleeved on the circumferential surface of the circular copper sheet, a limiting conductive cup electrically connected to the PCB board is installed in the outer area of ​​the base corresponding to the copper spring ring, and a ring magnet is arranged inside the limiting conductive cup.

[0026] Optionally, it also includes two counterweight pendulum limit fixing claws and a sliding switch;

[0027] Two counterweight pendulum limiting and fixing claws are cross-arranged on the base to form a jaw for clamping the counterweight pendulum, and the middle parts of the two counterweight pendulum limiting and fixing claws are hinged to the base through the limiting and fixing claw rotating shaft, and a sliding switch slide groove is arranged on the front side of the base, and a sliding switch is movably arranged in the sliding switch slide groove, and a toggle piece is arranged on the sliding switch, which extends into the interior of the base and can toggle the two counterweight pendulum limiting and fixing claws to make the counterweight pendulum limiting and fixing claws close the jaws and clamp the counterweight pendulum.

[0028] Optionally, the base is provided with a power switch 2 electrically connected to the PCB board on the periphery of the two counterweight pendulum limit fixing claws. The power switch 2 is a trigger-type spring switch. When the two counterweight pendulum limit fixing claws open the jaws and release the counterweight pendulum, one of the two counterweight pendulum limit fixing claws triggers the power switch 2.

[0029] (III) Beneficial effects

[0030] The beneficial effects of the utility model are as follows: the movement structure of the laser line projector of the utility model comprises a hanger, a rotating shaft assembly and a counterweight pendulum body, and the counterweight pendulum body is movably connected to the hanger through the rotating shaft assembly; the rotating shaft assembly comprises a rotating shaft 1 and a rotating shaft 2 which are vertically connected to each other, wherein the rotating shaft 1 is movably connected to the hanger through a bearing 1 arranged at both ends thereof, and the rotating shaft 2 is movably connected to the connecting ear at the upper end of the counterweight pendulum body through a bearing 2 arranged at both ends thereof, and the end surfaces of the rotating shaft 1 and the rotating shaft 2 are radially provided with glue injection grooves. Compared with the prior art, the laser projection instrument of the utility model has the advantages of high precision, low cost and high reliability. The movement structure of the optical projection instrument can dispense glue through the glue injection groove, and the glue will penetrate into the connection gap between the inner ring of the bearing and the rotating shaft along the opening at the end of the glue injection groove; specifically, due to its fluidity and surface tension, the glue will not stay on the end faces of the rotating shaft 1 and the rotating shaft, and will diffuse along the opening at the end of the glue injection groove to the connection between the inner wall of the inner ring of the bearing and the rotating shaft, and finally penetrate into the connection gap between the inner ring of the bearing and the rotating shaft, thereby effectively preventing the glue from entering the ball structure of the bearing and affecting the normal operation of the bearing while fixing the bonded bearing. In addition, screws do not need to be set at the ends of the rotating shaft 1 and the rotating shaft, which reduces the use of screws, thereby reducing production processes, improving production efficiency, and saving production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is an exploded schematic diagram of the core structure of the laser line projector of the present utility model;

[0032] Figure 2 It is a three-dimensional schematic diagram of the core structure of the laser line projector of the present utility model;

[0033] Figure 3 for Figure 2 A three-dimensional schematic diagram of a rotating shaft 1, a rotating shaft 2, a bearing 1 and a bearing 2;

[0034] Figure 4 for Figure 3 A three-dimensional schematic diagram of the rotating shaft 1 in FIG.

[0035] Figure 5 for Figure 3 A three-dimensional schematic diagram of the rotating shaft 2 in FIG.

[0036] Figure 6 Another three-dimensional schematic diagram of the structure of the movement of the laser line projector of the present invention;

[0037] Figure 7 This is a schematic diagram of the external structure of the laser line projector of the utility model;

[0038] Figure 8 This is a three-dimensional schematic diagram of the laser line projector of the present invention when the housing is not installed;

[0039] Fig. 9 for Figure 8 A three-dimensional schematic diagram of a base in FIG.

[0040] Fig.10 for Figure 8 A three-dimensional schematic diagram of the counterweight pendulum body limit fixing claw triggering the power switch 2.

[0041] [Description of Reference Numerals]

[0042] 1: hanger; 2: counterweight pendulum; 3: shaft 1; 4: shaft 2; 5: bearing 1; 6: connecting ear; 7: bearing 2; 8: injection groove; 9: step 1; 10: step 2; 11: connecting block; 12: through hole; 13: convex ring; 14: shaft fixing screw hole; 15: shaft fixing screw; 16: laser emitting component cavity; 17: laser emitting component; 18: vertical adjustment screw hole; 19: vertical adjustment screw; 20: horizontal adjustment screw hole; 21: horizontal adjustment screw; 22: laser emitting component fixing screw hole; 23: laser emitting component fixing screw Wire; 24: knife back groove; 25: glue dispensing hole; 26: base; 27: shell; 28: support rod; 29: support rod; 30: PCB board; 31: laser emitter power supply circuit board; 32: power switch one; 33: round copper sheet; 34: copper spring ring; 35: limit conductive cup; 36: counterweight pendulum limit fixed claw; 37: sliding switch; 38: limit fixed claw shaft; 39: sliding switch slide; 40: toggle piece; 41: power switch two; 42: laser projection window; 43: charging port; 44: wire slot; 45: ring magnet. DETAILED DESCRIPTION

[0043] In order to better explain the utility model and facilitate understanding, the utility model is described in detail below with reference to the accompanying drawings and through specific embodiments. Figure 2 The orientation is used as a reference.

[0044] Reference Figure 1 , Figure 2 and Figure 3 The present embodiment provides a movement structure for a laser projection instrument, including a hanger 1, a counterweight pendulum 2 and a rotating shaft assembly, wherein the rotating shaft assembly includes a rotating shaft 1 3 and a rotating shaft 2 4 which are vertically connected to each other.

[0045] Bearings 5 ​​are installed on both sides of the hanger 1, and both ends of the rotating shaft 3 pass through the bearings 5 ​​respectively and the bearings 5 ​​form a rotation support for the rotating shaft 3;

[0046] The front and rear sides of the upper end of the counterweight pendulum body 2 are both provided with connecting ears 6, and a bearing 2 7 is provided in the connecting ears 6. The middle part of the rotating shaft 1 3 is fixedly connected with the middle part of the rotating shaft 2 4, and the two ends of the rotating shaft 2 4 respectively pass through the bearing 2 7 and the bearing 2 7 forms a rotation support for the rotating shaft 2 4;

[0047] There are connecting gaps between the rotating shaft 3 and the inner ring of the bearing 1 5 sleeved on the periphery thereof, and between the rotating shaft 2 4 and the inner ring of the bearing 2 7 sleeved on the periphery thereof, and the end faces of the rotating shaft 3 and the rotating shaft 2 4 are radially provided with glue injection grooves 8, and at least one end of the glue injection groove 8 is open and connected to the connecting gap, so that the glue injected into the glue injection groove 8 flows into the connecting gap to glue the rotating shaft 3 and the bearing 1 5 or the rotating shaft 2 and the bearing 2 7 together.

[0048] It should be noted that the inner ring diameter of bearing 1 5 is slightly larger than the diameter of shaft 1 3 , and the inner ring diameter of bearing 2 7 is slightly larger than the diameter of shaft 2 4 , thereby forming an annular connecting gap between the inner wall surface of the inner ring of bearing 1 5 and the outer circumferential surface of shaft 1 3 , and between the inner wall surface of the inner ring of bearing 2 7 and the outer circumferential surface of shaft 2 4 , and glue enters the connecting gap to bond and fix shaft 1 3 and bearing 1 5 or shaft 2 and bearing 2 7 .

[0049] Furthermore, the glue injection groove 8 can be a straight-line flat-cut groove, and the two ends of the straight-line flat-cut groove are open and connected to the connecting gap. When glue is dispensed into the glue injection groove 8, the glue will penetrate into the connecting gap between the inner ring of the bearing and the rotating shaft along the openings at the two ends of the glue injection groove 8, while fixing the rotating shaft and the bearing, effectively preventing the glue from entering the ball structure of the bearing and affecting the normal operation of the bearing. Therefore, the movement structure of the laser line projection instrument in this embodiment has good connection stability between the bearing and the rotating shaft, and the laser projection accuracy is also high. In addition, screws do not need to be set at the ends of the rotating shaft 1 3 and the rotating shaft 2 4, which reduces the use of screws, reduces the production process, improves production efficiency, and saves production costs. It should be noted that the glue injection groove 8 can also be a cross-shaped or M-shaped flat-cut groove, and the cross-shaped or M-shaped flat-cut groove has multiple open ends so that the glue can quickly and evenly penetrate into the connecting gap between the rotating shaft and the bearing.

[0050] In this embodiment, the outer ring of the bearing 1 5 and the hanger 1, and the outer ring of the bearing 2 7 and the connecting ear 6 of the counterweight pendulum body 2 are fixed by glue, and the hanger 1 and the connecting ear 6 are provided with glue holes 25 connected with the corresponding bearing mounting holes. After the bearing 1 5 and the bearing 2 7 are installed in the corresponding bearing mounting holes, glue is applied into the glue holes 25, and the bearing 1 5 and the hanger 1 or the bearing 2 7 and the connecting ear 6 are fixed by glue.

[0051] See also Figure 4 and Figure 5The two ends of the rotating shaft 3 are provided with steps 9 corresponding to the installation area of ​​the bearing 5 to locate the installation position of the bearing 5; the two ends of the rotating shaft 4 are provided with steps 10 corresponding to the installation area of ​​the bearing 7 to locate the installation position of the bearing 7. The purpose of providing steps 9 and 10 is to facilitate the assembly of the bearings. After the bearings are installed, they are directly in place and play a role in positioning.

[0052] Further, a tool withdrawal groove 24 is provided at the position of the rotating shaft 1 3 corresponding to the step 1 9 and at the position of the rotating shaft 2 4 corresponding to the step 2 10. The tool withdrawal groove 24 is a pre-made empty groove for withdrawing the tool, which is convenient for withdrawing the tool and processing the process to the step surface.

[0053] In this embodiment, a connecting block 11 is provided in the middle of the rotating shaft 2 4, and a through hole 12 for the rotating shaft 1 3 to pass through is opened at the center position of the connecting block 11 along the radial direction of the rotating shaft 2 4, and a convex ring 13 is provided on the rotating shaft 3 corresponding to the installation area of ​​the connecting block 11 to locate the installation position of the connecting block 11; or, a connecting block 11 is provided in the middle of the rotating shaft 3, and a through hole 12 for the rotating shaft 1 4 to pass through is opened at the center position of the connecting block 11 along the radial direction of the rotating shaft 1 3, and a convex ring 13 is provided on the rotating shaft 4 corresponding to the installation area of ​​the connecting block 11 to locate the installation position of the connecting block 11.

[0054] Furthermore, the connecting block 11 is provided with a shaft fixing screw hole 14 connected to the through hole 12, a shaft fixing screw 15 is screwed into the shaft fixing screw hole 14, and the end of the shaft fixing screw 15 abuts against the fixed shaft 1 3 or the shaft 2 4; glue is dripped into the gap between the shaft fixing screw 15 and the inner wall of the shaft fixing screw hole 14 to bond and fix the shaft fixing screw 15 and the connecting block 11. The shaft fixing screw 15 and the connecting block 11 of this embodiment are connected by both threaded connection and bonding, so the connection is more firm and not easy to loosen.

[0055] Combination Figure 1 and Figure 6 As shown, a laser emitting component cavity 16 is provided in the middle of the counterweight pendulum body 2 along the front-to-back direction, and a laser emitting component 17 is arranged in the laser emitting component cavity 16 .

[0056] A vertical adjustment screw hole 18 is formed on the front side wall of the counterweight pendulum body 2 below the laser emitting component cavity 16 , and a vertical adjustment screw 19 is disposed in the vertical adjustment screw hole 18 .

[0057] The left side wall or the right side wall of the counterweight pendulum body 2 is provided with two horizontal adjustment screw holes 20 arranged up and down and connected with the laser emitting component cavity 16, and the two horizontal adjustment screw holes 20 are provided with horizontal adjustment screws 21. The counterweight pendulum body 2 is provided with a laser emitting component fixing screw hole 22 connected with the laser emitting component cavity 16 in the middle of the two horizontal adjustment screw holes 20, and the laser emitting component fixing screw 23 is provided in the laser emitting component fixing screw hole 22, and the laser emitting component fixing screw 23 is a ball screw.

[0058] It should be noted that the advantage of using a ball-end screw instead of an ordinary fixing screw in this embodiment is that it has better flexibility. Since a ball is provided at the front end of the ball-end screw, it cooperates with the internal spring to tighten and fix the laser emitting component 17 while conveniently performing fine-tuning through two horizontal adjustment screws 21. There is no need to loosen the laser emitting component fixing screw 23 before adjusting it, and there is no need to provide a separate horizontal fine-tuning screw. As a result, the existing horizontal fine-tuning screw can be removed, which can save cost and assembly time.

[0059] In this embodiment, a glue hole 25 connected to the laser emitting component cavity 16 is provided on the left or right wall of the counterweight pendulum body 2. The laser emitting component 17 is installed in the laser emitting component cavity 16, and after the horizontal and vertical positions are adjusted, glue is dispensed into the glue hole 25 on the counterweight pendulum body 2, so as to bond and fix the laser emitting component 17 and the inner wall surface of the laser emitting component cavity 16.

[0060] See also Figure 7 and Figure 8 This embodiment also provides a laser line projector, including a base 26, a housing 27 and the above-mentioned laser line projector core structure. The base 26 is provided with a plurality of support rods 28, the upper ends of the plurality of support rods 28 are fixedly connected to the hanger 1 of the laser line projector core structure, and the housing 27 is disposed on the periphery of the laser line projector core structure and is detachably connected to the base 26.

[0061] The laser line projector of this embodiment also includes a power supply installed on the base 26, a PCB board 30 installed on the upper surface of the hanger 1, and a laser emitting component power supply circuit board 31 installed on the counterweight pendulum 2; the power supply is electrically connected to the PCB board 30, the PCB board 30 is electrically connected to the laser emitting component power supply circuit board 31, the laser emitting component power supply circuit board 31 is electrically connected to the laser emitting component 17 through a wire, and a power switch 32 is provided on the PCB board 30.

[0062] Combination Figure 2 and Figure 6 As shown, a wire slot 44 is provided on the rear side of the counterweight pendulum body 2, and wires for connecting the laser emitting component power supply circuit board 31 and the laser emitting component 17 are arranged in the wire slot 44, and a clamping protrusion for fixing the wire is arranged on the side wall of the wire slot 44.

[0063] Combination Figure 6 and Fig. 9 As shown, a circular copper sheet 33 is fixed to the lower end of the counterweight pendulum body 2, and a copper spring ring 34 is sleeved on the circumferential surface of the circular copper sheet 33. A limiting conductive cup 35 electrically connected to the PCB board 30 is installed in the peripheral area of ​​the base 26 corresponding to the copper spring ring 34, and a ring magnet 45 is arranged on the bottom wall inside the limiting conductive cup 35. The ring magnet 45 generates a magnetic field, and the circular copper sheet 33 cooperates with the ring magnet 45 in the base 26. When the counterweight pendulum body 2 swings with a large amplitude, it cuts the magnetic flux lines in the magnetic field to play a deceleration role, so that the counterweight pendulum body 2 is quickly in a static state. The function of the limiting conductive cup 35 is that when the inclination angle of the counterweight pendulum body 2 is greater than the correctable angle, the copper spring ring 34 will contact the inner wall of the limiting conductive cup 35, thereby conducting current, and the laser line projection instrument will issue a warning. At this time, the maximum inclination angle is exceeded, and the projection is stopped or an alarm is issued. It should be noted that the main body of the position-limiting conductive cup 35 is a plastic shell, and the inner wall surface of the plastic shell is a metal shell made of a conductive metal material, such as aluminum metal.

[0064] The counterweight pendulum body 2 of this embodiment adopts the method of setting the copper spring ring 34 on the circumferential surface of the circular copper sheet 33 instead of the method of setting the copper spring vertically at the bottom of the circular copper sheet 33 in the prior art, which has the following advantages: First, it can effectively avoid the problem of the copper spring set at the bottom of the circular copper sheet 33 being deformed in the prior art, which leads to a decrease in the accuracy of offset detection. Second, in the prior art, the copper spring is set at the bottom of the circular copper sheet 33, and a clamping structure needs to be set to fix the copper spring, thereby increasing the complexity of the structure, while this embodiment has only two parts, the structure is simpler, and while saving costs, it reduces the assembly process and improves production efficiency. Third, in this embodiment, the copper spring ring 34 is sleeved on the circumferential surface of the circular copper sheet 33, which can reduce the high noise caused by the direct collision between the copper sheet and the limit conductive cup in the prior art, thereby achieving the effect of reducing noise. Fourth, in this embodiment, since the copper spring is not fixed at the lower end of the circular copper sheet 33, the bottom of the limit conductive cup 35 does not need to be concave, and its bottom is a flat design, thereby reducing the thickness of the base 26, thereby reducing the thickness of the entire laser line projector product.

[0065] Combination Figure 8 and Fig.10As shown, the laser line projector of this embodiment also includes two counterweight pendulum limiting fixed claws 36 and a sliding switch 37. The two counterweight pendulum limiting fixed claws 36 are cross-arranged on the base 26 to form a jaw for clamping the counterweight pendulum 2, and the middle parts of the two counterweight pendulum limiting fixed claws 36 are hinged to the base 26 through the limiting fixed claw rotating shaft, and the front side of the base 26 is provided with a sliding switch slot 39, and the sliding switch 37 is movably arranged in the sliding switch slot 39. The sliding switch 37 is provided with a toggle member 40, which extends into the interior of the base 26, and can toggle the two counterweight pendulum limiting fixed claws 36, so that the counterweight pendulum limiting fixed claws 36 close the jaws and clamp the counterweight pendulum 2.

[0066] It should be noted that when the laser line projector is in the closed state, the sliding switch 37 drives the toggle member 40 to toggle the two counterweight pendulum limiting fixed claws 36, so that the counterweight pendulum limiting fixed claws 36 close the jaws and clamp the counterweight pendulum 2, thereby limiting the forward and backward, left and right swings of the counterweight pendulum 2. When the laser line projector is in the open state, the sliding switch 37 drives the toggle member 40 to release the restriction on the two counterweight pendulum limiting fixed claws 36, thereby the two counterweight pendulum limiting fixed claws 36 open the jaws and release the counterweight pendulum 2.

[0067] Furthermore, the base 26 of this embodiment is provided with a power switch 2 41 electrically connected to the PCB board 30 on the periphery of the two counterweight pendulum limit fixing claws 36. The power switch 2 41 is a trigger-type spring switch. When the two counterweight pendulum limit fixing claws 36 open the jaws and release the counterweight pendulum 2, one of the two counterweight pendulum limit fixing claws 36 triggers the power switch 2 41.

[0068] It should be noted that when the power switch 2 41 of the present embodiment is triggered, the power supply can be started to supply power to the PCB board 30. The power switch 1 32 of the present embodiment can start the power supply to supply power to the PCB board 30 when the two counterweight pendulum limiting fixed claws 36 clamp the counterweight pendulum 2 (at this time, the power switch 2 41 is not triggered). The power switch 1 32 can also switch the laser emission power to achieve the switching of different laser brightness gears.

[0069] Furthermore, the base 26 is provided with a charging port 43 electrically connected to a power source for plugging in an external charging component.

[0070] In this embodiment, a cross-shaped laser projection window 42 is opened on the front side wall of the housing 27, and a protective lens is provided at the laser projection window 42.

[0071] In the description of the present utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0072] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0073] In the present utility model, unless otherwise clearly specified and limited, when a first feature is “on” or “below” a second feature, it may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, when a first feature is “above”, “above” or “above” a second feature, it may be that the first feature is directly above or obliquely above the second feature, or it may simply mean that the first feature is higher in level than the second feature. When a first feature is “below”, “below” or “below” a second feature, it may be that the first feature is directly below or obliquely below the second feature, or it may simply mean that the first feature is lower in level than the second feature.

[0074] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "embodiment", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0075] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A movement structure for a laser line projector, characterized in that: It comprises a hanger (1), a rotating shaft assembly and a counterweight pendulum (2), wherein the counterweight pendulum (2) is movably connected to the hanger (1) via the rotating shaft assembly; The rotating shaft assembly comprises a rotating shaft 1 (3) and a rotating shaft 2 (4) which are vertically connected to each other, wherein the rotating shaft 1 (3) is movably connected to a hanger (1) via a bearing 1 (5) arranged at both ends thereof, and the rotating shaft 2 (4) is movably connected to a connecting ear (6) at the upper end of a counterweight pendulum body (2) via a bearing 2 (7) arranged at both ends thereof, and a glue injection groove (8) is radially provided on the end surfaces of both ends of the rotating shaft 1 (3) and the rotating shaft 2 (4).

2. The laser projection device movement structure according to claim 1, characterized in that: The glue injection groove (8) is a straight-line flat groove, and both ends of the flat groove are open and communicate with the connecting gap between the rotating shaft (3) and the inner ring of the bearing (5) or between the rotating shaft (4) and the inner ring of the bearing (7).

3. The core structure for the laser line projector according to claim 1, characterized in that: Steps (9) are provided at both ends of the rotating shaft (3) corresponding to the installation area of ​​the bearing (5) to locate the installation position of the bearing (5); steps (10) are provided at both ends of the rotating shaft (4) corresponding to the installation area of ​​the bearing (7) to locate the installation position of the bearing (7); A connecting block (11) is provided in the middle of the second rotating shaft (4), a through hole (12) for the first rotating shaft (3) to pass through is provided at the center of the connecting block (11) along the radial direction of the second rotating shaft (4), and a convex ring (13) is provided on the first rotating shaft (3) in a mounting area corresponding to the connecting block (11) for positioning the mounting position of the connecting block (11); or a connecting block (11) is provided in the middle of the first rotating shaft (3), a through hole (12) for the second rotating shaft (4) to pass through is provided at the center of the connecting block (11) along the radial direction of the first rotating shaft (3), and a convex ring (13) is provided on the second rotating shaft (4) in a mounting area corresponding to the connecting block (11) for positioning the mounting position of the connecting block (11).

4. The core structure for the laser line projector according to claim 3, characterized in that: The connecting block (11) is provided with a rotating shaft fixing screw hole (14) which is connected to the through hole (12); a rotating shaft fixing screw (15) is screwed into the rotating shaft fixing screw hole (14); and the end of the rotating shaft fixing screw (15) abuts against and fixes the first rotating shaft (3) or the second rotating shaft (4); Glue is dripped into the gap between the rotating shaft fixing screw (15) and the inner wall of the rotating shaft fixing screw hole (14) to bond and fix the rotating shaft fixing screw (15) and the connecting block (11).

5. The core structure for the laser line projector according to claim 1, characterized in that: A laser emitting component cavity (16) is provided in the middle of the counterweight pendulum body (2) along the front-rear direction, and a laser emitting component (17) is arranged in the laser emitting component cavity (16); A vertical adjustment screw hole (18) is provided on the front side wall of the counterweight pendulum body (2) below the laser emitting component cavity (16), and a vertical adjustment screw (19) is provided in the vertical adjustment screw hole (18); The left side wall or the right side wall of the counterweight pendulum body (2) is provided with two horizontal adjustment screw holes (20) arranged up and down and communicating with the laser emitting component cavity (16), and the two horizontal adjustment screw holes (20) are provided with horizontal adjustment screws (21); The counterweight pendulum body (2) is provided with a laser emitting component fixing screw hole (22) in communication with the laser emitting component cavity (16) between two horizontal adjustment screw holes (20), and a laser emitting component fixing screw (23) is arranged in the laser emitting component fixing screw hole (22), and the laser emitting component fixing screw (23) is a ball screw.

6. A laser line projector, characterized in that: It comprises a base (26), a housing (27) and a core structure for a laser line projector as claimed in any one of claims 1 to 5; A plurality of support rods (28) are arranged on the base (26), the upper ends of the plurality of support rods (28) are fixedly connected to a hanger (1) of a core structure for a laser line projector, and a housing (27) is arranged on the periphery of the core structure for the laser line projector and is detachably connected to the base (26).

7. The laser line projector according to claim 6, characterized in that: It also includes a power supply installed on the base (26), a PCB board (30) installed on the upper surface of the hanger (1), and a laser emitting component power supply circuit board (31) installed on the counterweight pendulum body (2); The power supply is electrically connected to the PCB board (30), the PCB board (30) is electrically connected to the laser emitting component power supply circuit board (31), the laser emitting component power supply circuit board (31) is electrically connected to the laser emitting component (17) via a wire, and a power switch 1 (32) is provided on the PCB board (30).

8. The laser line projector according to claim 7, characterized in that: A circular copper sheet (33) is fixed to the lower end of the counterweight pendulum body (2), a copper spring ring (34) is sleeved on the circumferential surface of the circular copper sheet (33), a limiting conductive cup (35) electrically connected to the PCB board (30) is installed in the peripheral area of ​​the base (26) corresponding to the copper spring ring (34), and a ring magnet (45) is arranged inside the limiting conductive cup (35).

9. The laser line projector according to claim 7, characterized in that: It also includes two counterweight pendulum limiting fixing claws (36) and a sliding switch (37); Two counterweight pendulum limiting and fixing claws (36) are cross-arranged on the base (26) to form a jaw for clamping the counterweight pendulum (2), and the middle parts of the two counterweight pendulum limiting and fixing claws (36) are hinged to the base (26) through the limiting and fixing claw rotating shafts, and a sliding switch sliding groove (39) is arranged on the front side of the base (26), and a sliding switch (37) is movably arranged in the sliding switch sliding groove (39), and a toggle member (40) is arranged on the sliding switch (37), and the toggle member (40) extends into the inside of the base (26) and can toggle the two counterweight pendulum limiting and fixing claws (36) to close the jaws of the counterweight pendulum limiting and fixing claws (36) to clamp the counterweight pendulum (2).

10. The laser line projector according to claim 9, characterized in that: The base (26) is provided with a second power switch (41) electrically connected to the PCB board (30) on the periphery of the two counterweight pendulum limiting fixed claws (36). The second power switch (41) is a trigger-type spring switch. When the two counterweight pendulum limiting fixed claws (36) open their jaws and release the counterweight pendulum (2), one of the two counterweight pendulum limiting fixed claws (36) triggers the second power switch (41).

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