Laser line module structure

Abstract

The application relates to the technical field of laser measurement, and particularly provides a laser line module structure which comprises a shell, the inside of the shell is hollow, a mirror seat, a collimating lens group and a laser tube group are sequentially arranged in the inside of the shell from the head to the tail, a first mounting hole is arranged in the head inner side of the shell, the mirror seat is in interference fit in the first mounting hole, the outer periphery of the tail of the mirror seat is provided with a spherical surface, so that the mirror seat can rotate in the first mounting hole with the center of the spherical surface of the outer periphery of the mirror seat as the rotation center, the axial angle of the mirror seat can be adjusted only by exerting an adjusting force on the mirror seat, the axial line of the cylindrical mirror in the mirror seat is perpendicular to the collimated laser beam emitted by the collimating lens group, and when the angle of the mirror seat is adjusted, the interference fit makes the mirror seat have an expansion friction force during rotation, so that the stability of the adjustment precision of the mirror seat can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of laser measurement technology, in particular to a laser line module structure. BACKGROUND

[0002] The laser line module is a kind of measuring instrument commonly used in building and house decoration, which generally refers to a visible laser that can emit vertical or horizontal laser, which is used to mark horizontal line or vertical line on the target surface, and the laser module is the core component of the laser line module, which generally consists of laser generator, optical element, mechanical structure and driving circuit.

[0003] The existing laser line module is provided with a laser point light source assembly, a shell, a cylindrical lens, two or four straight line precision adjusting screws, the point light source assembly is arranged in the center mounting hole at the tail of the shell, the cylindrical lens is installed in the radial hole of the front end cylinder of the shell, a pair of saw joints are arranged behind the cylindrical lens mounting hole of the shell, the saw joints are in communication with the two or four adjusting screw holes, and the precision is adjusted.

[0004] However, the adjusting structure of a pair of saw joints and two or four top screws is used to adjust the position relationship of the cylindrical lens installed on the head of the module relative to the optical axis, the structure is complex, the screw size is small, the size of the hexagonal hole matched with the adjusting screw is high, and the insertion and extraction will affect the precision, the automatic equipment cannot achieve accurate adjustment, and in addition, the traditional module structure is complex, the investment is large, and the qualified rate is not high. SUMMARY

[0005] Therefore, it is necessary to provide a laser line module structure aiming at the problems of low precision and difficult adjustment when adjusting the cylindrical lens of the current laser line module.

[0006] The above-mentioned purpose is realized by the following technical scheme:

[0007] A laser line module structure, comprising a shell, the inside of the shell is hollow, and a mirror seat, a collimating lens group and a laser tube group are sequentially installed in the inside of the shell from the head to the tail.

[0008] The laser tube group is arranged at the tail of the shell, and the laser tube group can generate divergent laser in the shell.

[0009] The collimating lens group is installed at the middle position of the shell, the shell is provided with a diaphragm hole, the diaphragm hole is located between the collimating lens group and the laser tube group, the divergent laser passes through the diaphragm hole and directly irradiates on the collimating lens group, and the collimating lens group can form a collimated laser beam from the divergent laser.

[0010] The mirror seat has a cylindrical mirror arranged along the radial direction thereof, the collimated laser beam is irradiated on the cylindrical mirror to form a laser plane screen, the outer periphery of the tail of the mirror seat has a spherical surface, the spherical surface is in interference fit with the inner side of the head of the shell, and the mirror seat can rotate along the spherical surface with the center of the circle as the rotation center axis to adjust the cylindrical mirror to be perpendicular to the optical axis of the collimated laser beam.

[0011] Further, the outer periphery of the tail of the mirror seat has a first surface and a second surface along the axial direction thereof, the first surface is located in front of the second surface, the first surface is cylindrical, the second surface is spherical, the diameter of the first surface is smaller than the diameter of the second surface, the inner side of the head of the shell is provided with a first mounting hole, the diameter of the front inner wall of the first mounting hole is larger than the diameter of the rear inner wall, and the diameters of the first surface and the second surface are both smaller than the diameter of the front inner wall of the first mounting hole.

[0012] Further, a second mounting hole is arranged along the radial direction in the mirror seat, and the cylindrical mirror is inserted into the second mounting hole.

[0013] Further, a U-shaped groove corresponding to the two axial ends of the second mounting hole is arranged on the side wall of the first mounting hole, the size of the U-shaped groove is larger than that of the second mounting hole, a dot glue hole is arranged on the side wall of the first mounting hole perpendicularly to the axis of the second mounting hole, and the combination part of the dot glue hole and the U-shaped groove is filled with glue to fix the mirror seat in the first mounting hole.

[0014] Further, the rotation center of the mirror seat is concentric with the center of the first mounting hole and passes through the cross section of the shell where the bottom of the U-shaped groove is located.

[0015] Further, a lens group mounting groove is arranged in the shell, one end of the collimating lens group abuts against the bottom of the lens group mounting groove, and the end of the lens group mounting groove is provided with a pressing assembly capable of abutting against the collimating lens group to position the collimating lens group in the lens group mounting groove.

[0016] Further, the pressing assembly is an elastic rubber ring, the elastic rubber ring has elasticity, the elastic rubber ring abuts against the tail of the mirror seat, and the other end of the elastic rubber ring abuts against the collimating lens group.

[0017] Further, the second surface of the mirror seat comprises a first part and a second part, the first part and the second part are coaxial and can move axially relative to each other, an elastic ring is arranged between the first part and the second part, and the two end faces of the elastic ring abut against the first part and the second part, respectively.

[0018] Further, the elastic ring is hollow inside, and the elastic ring can be deformed when the external air pressure is greater than the internal air pressure, the first part and the second part are close to each other;

[0019] The elastic ring expands when the external air pressure is less than the internal air pressure, and the elastic ring pushes the first part and the second part away from each other, and the periphery of the first part and the second part abuts against the inside of the head of the shell.

[0020] Further, the laser tube group is arranged in the inside of the tail of the shell in interference fit.

[0021] The beneficial effects of the present application are:

[0022] The present application can adjust the axial angle of the mirror seat by applying an adjusting force on the mirror seat, so that the axial line of the cylindrical mirror in the mirror seat is perpendicular to the optical axis of the collimated laser beam emitted by the collimating lens group, and when adjusting the axial angle of the mirror seat, the interference fit makes the mirror seat overcome the expansion friction during rotation, and after the precision adjustment is completed, the expansion friction makes the cylindrical lens group preliminarily positioned.

[0023] The present application can position the collimating lens group in the lens group mounting groove by arranging the lens group mounting groove in the shell and arranging the pressing assembly on the lens group mounting groove, when the pressing assembly is an elastic rubber ring, the end of the elastic rubber ring close to the first mounting hole can push the elastic rubber ring to position the collimating lens group in the lens group mounting groove when the mirror seat is installed.

[0024] The present application can deform the elastic ring to push the first part and the second part close to or away from each other, and the elastic ring shrinks when the mirror seat is installed in a high pressure environment, so that the first part and the second part are close to each other, and the mirror seat is more easily interfered, and the friction force during adjustment of the mirror seat can be reduced, and a smaller adjusting force can be used, and the elastic ring resets to push the first part and the second part when the mirror seat is adjusted and fixed in a normal pressure state, further enhancing the connection strength between the mirror seat and the shell. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 The structure diagram of the laser line module structure provided by the first embodiment of the present application is provided;

[0026] Figure 2 The exploded view of the laser line module structure provided by the first embodiment of the present application is provided; Figure 1 The exploded view of the laser line module structure provided by the first embodiment of the present application is provided;

[0027] Figure 3 For Figure 1 The front view of the laser line module structure provided in the first embodiment;

[0028] Figure 4 For Figure 3 The cross-sectional view of the laser line module structure provided in the first embodiment along A-A;

[0029] Figure 5 For Figure 1 The top view of the laser line module structure provided in the first embodiment;

[0030] Figure 6 For Figure 5 The cross-sectional view of the laser line module structure provided in the first embodiment along B-B;

[0031] Figure 7 The internal structure schematic view of the laser line module structure provided in the second embodiment of the present application;

[0032] Figure 8 The schematic view of the laser line module structure provided in the third embodiment of the present application;

[0033] Figure 9 For Figure 8 The cross-sectional view of the laser line module structure provided in the third embodiment along C-C;

[0034] Figure 10 The structure schematic view of the laser line module structure provided in the third embodiment from another angle;

[0035] Figure 11 For Figure 10 The cross-sectional view of the laser line module structure provided in the third embodiment along D-D;

[0036] Figure 12 The cross-sectional view of the laser line module structure provided in the third embodiment of the present application.

[0037] Wherein:

[0038] 100, mirror seat; 110, cylindrical mirror; 120, elastic rubber ring; 130, collimating lens group; 140, shell; 150, laser tube group; 151, laser tube; 152, laser tube seat; 153, PCB driving circuit; 154, wire; 160, compression ring;

[0039] 200, first mounting hole; 210, lens group mounting groove; 220, diaphragm hole; 230, second mounting hole; 240, U-shaped groove; 250, dispensing hole; 260, third mounting hole; 270, module positioning stress surface;

[0040] 300, first surface; 310, second surface; 320, first part; 321, groove; 330, second part; 331, convex ring; 340, elastic ring. DETAILED DESCRIPTION

[0041] In order to make the objects, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the embodiments and in conjunction with the drawings. It should be understood that the specific embodiments described herein are only used to explain the present application and should not be used to limit the present application.

[0042] The serial numbers of components in this paper, such as "first", "second", etc., are only used to distinguish the described objects, and do not have any sequence or technical meaning. And the "connection" and "coupling" in the present application include direct and indirect connection (coupling) unless otherwise specified. In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. are based on the orientations or positional relationships shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0043] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "above", "over" and "on" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "under" and "under" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0044] The present application provides a laser line module structure. Figures 1-12 The present application provides a laser line module structure.

[0045] A laser line module structure includes a housing 140, the inside of which is hollow, and the inside of which is sequentially mounted with a mirror seat 100, a collimating lens group 130 and a laser tube group 150 from head to tail, such as Figure 1 、 Figure 2 and Figure 3As shown, the laser tube group 150 is installed at the tail of the shell 140, and the laser tube group 150 can generate divergent laser inside the shell 140, while the collimating lens group 130 is installed at the middle position of the shell 140, and the diaphragm hole 220 is arranged inside the shell 140, and specifically between the collimating lens group 130 and the laser tube group 150, so that the divergent laser emitted by the laser tube group 150 can pass through the diaphragm hole 220, and the divergent laser can be projected on the collimating lens group 130 after passing through the diaphragm hole 220, and the collimating lens group 130 can form a collimated laser beam by focusing the divergent laser, and the collimated laser beam is emitted towards the head of the shell 140, the mirror seat 100 is located in the head of the shell 140, and the mirror seat 100 is cylindrical, and the mirror seat 100 has the cylindrical mirror 110 arranged along the radial direction thereof, and the collimated laser beam is directed to the outer periphery of the cylindrical mirror 110, and the collimated laser beam forms a laser plane screen, that is, a laser line, after being transmitted, refracted and reflected by the cylindrical mirror 110.

[0046] It should be noted that the mirror seat 100 of the present application is interference fitted on the shell 140, and the tail of the mirror seat 100 has a spherical surface, and the center of the spherical surface is located on the axis of the mirror seat 100, and the outer periphery of the spherical surface is interference fitted with the inner side wall of the head of the shell 140, and the spherical surface can be used as the rotation center for the slight axial rotation of the mirror seat 100 when the mirror seat 100 is interference fitted in the shell 140, so as to adjust the axial angle of the mirror seat 100, and since the cylindrical mirror 110 is installed on the mirror seat 100, adjusting the angle of the mirror seat 100 is equivalent to adjusting the angle of the cylindrical mirror 110, so as to ensure that the axis of the cylindrical mirror 110 is perpendicular to the axis of the shell 140, that is, the collimated laser beam emitted from the collimating lens group 130 is perpendicular to the axis of the cylindrical mirror 110, and further ensures that the cylindrical mirror 110 can generate a high-precision laser line.

[0047] The lens seat 100 is in interference fit in the shell 140, so that the lens seat 100 can be stably positioned in the shell 140, the stability of the lens seat 100 is improved, and the cylindrical lens 110 is installed in the lens seat 100, the angle of the cylindrical lens 110 is indirectly adjusted by adjusting the axial angle of the lens seat 100, the accuracy is high during the adjustment process due to the interference fit, and the lens seat 100 can be stably positioned after the adjustment is completed, for example, if two or four top screws in the prior art are used to adjust the angle of the cylindrical lens 110, the adjustment accuracy is low, and the operator needs to repeatedly adjust, and the adjustment efficiency is not high, and the present application only needs to apply an adjusting force on both sides of the lens seat 100, that is, the installation position of the cylindrical lens 110, to adjust the axial angle of the lens seat 100, and then adjust the angle of the cylindrical lens 110, which is convenient and fast, at the same time, the interference fit can enable the laser line module structure to realize automatic assembly and debugging, that is, the assembly of the collimating lens group 130 can be automated, the optical focusing can be automated, the installation and adjustment of the cylindrical lens 110 can be automated, compared with the four screws and a pair of saw joints of the traditional laser line module, the present application does not use a screw for adjustment, and the generation of screw adjustment stress is avoided.

[0048] It should be noted that the laser line module structure needs to be positioned when applied, the middle and rear parts of the shell 140 are the parts clamped by the laser line module structure, and the shell 140 is provided with a module positioning force surface 270, the module positioning force surface 270 is an adjusting screw force surface when the laser line module structure is applied to the laser line projector and the position of the laser line is adjusted, generally 2, 4 or 8, the structure shape of the module clamping part is more, which is not limited here.

[0049] Specifically, as Figure 4As shown, the mirror seat 100 in the embodiment of the present application has a first surface 300 and a second surface 310, the first surface 300 is a cylindrical surface and is the front half of the mirror seat 100, and the second surface 310 is a spherical surface, the diameter of the first surface 300 is smaller than the diameter of the second surface 310, and the first surface 300 is located in front of the second surface 310. A first mounting hole 200 is arranged in the inside of the head of the shell 140, the diameter of the front inner wall of the first mounting hole 200 is larger than the diameter of the rear inner wall of the first mounting hole 200, and the diameters of the first surface 300 and the second surface 310 are both smaller than the diameter of the front inner wall of the first mounting hole 200. During the installation of the mirror seat 100, the second surface 310 of the mirror seat 100 first passes through the front side of the first mounting hole 200, and then passes through the rear side of the first mounting hole 200, while the first surface 300 only passes through the inner wall of the front side of the first mounting hole 200, and the diameter of the first surface 300 is smaller than the diameter of the front inner wall of the first mounting hole 200, so that there is a gap between the front side of the first mounting hole 200 and the first surface 300, which provides space for the axial rotation of the mirror seat 100. The second surface 310 of the mirror seat 100 can be preliminarily positioned when it is in the front side of the first mounting hole 200, and the second surface 310 is pressed and fitted in the rear side of the first mounting hole 200 after the mirror seat 100 is subjected to a pushing force, and the second surface 310 tightly fits with the inner wall of the rear side of the first mounting hole 200.

[0050] More specifically, the second mounting hole 230 is arranged in the mirror seat 100 and penetrates along the radial direction of the mirror seat 100, as shown in the figure. Figure 6 As shown, the mirror seat 100 is axially provided with a light outlet hole and a light inlet hole, that is, the right side of the second mounting hole 230 is the light inlet hole, and the left side is the light outlet hole. The cylindrical mirror 110 is slidingly inserted into the second mounting hole 230. The collimated laser beam emitted from the collimating lens group 130 passes through the light inlet hole and is incident on the cylindrical mirror 110. The collimated laser beam generates a high-precision laser line through transmission, reflection and refraction of the cylindrical mirror 110, and the laser line is emitted from the left light outlet hole. After the cylindrical mirror 110 is installed in the second mounting hole 230, glue needs to be applied at the axial positions of both ends of the second mounting hole 230, so as to fix the cylindrical mirror 110 in the second mounting hole 230.

[0051] In order to adjust the axial angle of the mirror seat 100, a U-shaped groove 240 corresponding to the axial two ends of the second mounting hole 230 is formed on the head position of the shell 140, that is, the side wall of the first mounting hole 200, and the size of the U-shaped groove 240 is greater than that of the second mounting hole 230, so as to facilitate the installation of the cylindrical lens 110, and when the mirror seat 100 is installed in the first mounting hole 200, a part of the mirror seat 100 can be observed through the U-shaped groove 240, at this time, the cylindrical lens 110 is inserted into the second mounting hole 230 through the U-shaped groove 240, and is fixed by dispensing, and then the operator can control the mechanical arm or other structure to abut on the two side hole edges of the second mounting hole 230 of the mirror seat 100 through the U-shaped groove 240, and when the mirror seat 100 is subjected to the action force, the mirror seat 100 can start to rotate axially with the spherical center of the second surface 310 as the rotation center, so as to adjust the axial line of the cylindrical lens 110 to be perpendicular to the collimated laser beam. In order to facilitate the fixation of the mirror seat 100, a dispensing hole 250 is formed on the side wall of the first mounting hole 200 at a position perpendicular to the axial line of the second mounting hole 230, and after dispensing in the dispensing hole 250, the mirror seat 100 can be fixed in the first mounting hole 200, so it is required to adjust the angle of the mirror seat 100 before dispensing, and finally the dispensing hole 250 is dispensed to fix the position of the mirror seat 100.

[0052] It should be noted that the mirror seat 100 can also be dispensed at the position of the U-shaped groove 240, so that the mirror seat 100 is further connected with the shell 140. The glue in the dispensing hole 250 and the glue at the position of the U-shaped groove 240 in the present application can be quick-drying glue, anaerobic glue or epoxy glue, so as to fix the mirror seat 100 in the first mounting hole 200, and of course, other glues can also be used, which are not limited here.

[0053] It can be understood that the U-shaped groove 240 in the present application not only facilitates the positioning and installation of the mirror seat 100, the precision adjustment of the mirror seat 100 and the installation of the cylindrical lens 110, but also facilitates the repair of defective products. The cylindrical lens 110 can be taken out through the U-shaped groove 240, and after the cylindrical lens 110 is taken out, a penetrating rod (not shown in the figure) can be inserted into the second mounting hole 230, so that the mirror seat 100 can be pulled out through the penetrating rod, which facilitates disassembly and reduces repair cost.

[0054] In the present embodiment, the rotation center of the mirror seat 100 in the present application is concentric with the center of the first mounting hole 200, the rotation center of the mirror seat 100 is close to the middle position of the shell 140, and the rotation center passes through the bottom of the U-shaped groove 240, that is, the spherical center of the second surface 310 on the mirror seat 100 is close to the middle position of the shell 140 and passes through the bottom of the U-shaped groove 240, as shown in Figure 3 and Figure 4As shown, the rotation center of the mirror seat 100 is located on the right side of the bottom cross section of the U-shaped groove 240, which is arranged to enable the mirror seat 100 to rotate around the spherical center of the second surface 310 as the rotation fulcrum, and there is a force arm between the force points on both sides of the second mounting hole 230 of the mirror seat 100, so as to adjust the axial angle of the mirror seat 100. If the rotation center of the mirror seat 100 does not cross the cross section where the bottom of the U-shaped groove 240 is located, the second surface 310 of the mirror seat 100 cannot be interference fitted in the first mounting hole 200, and the mirror seat 100 cannot be initially positioned. Therefore, the rotation center of the mirror seat 100 is arranged to cross the cross section where the bottom of the U-shaped groove 240 is located.

[0055] In the embodiment, the lens group mounting groove 210 is arranged in the shell 140, and the lens group mounting groove 210 is used to mount the collimating lens group 130. One end of the collimating lens group 130 abuts against the bottom of the lens group mounting groove 210, and the end of the lens group mounting groove 210 is provided with a press-fit assembly. The press-fit assembly can abut against the collimating lens group 130, so that the collimating lens group 130 is positioned in the lens group mounting groove 210.

[0056] In the embodiment, the laser tube group 150 is interference fitted with the inner wall of the tail of the shell 140. The tail of the laser tube group 150 needs to be pushed into the tail of the shell 140 by an external force to adjust the distance between the laser tube group 150 and the collimating lens group 130 to complete focusing. The expansion force of the interference fit positions the laser tube group 150 in the tail of the shell 140.

[0057] Specifically, as shown in Figure 3 and Figure 4 , the laser tube group 150 includes a laser tube seat 152, a laser tube 151, a PCB driving circuit 153, and a wire 154. The laser tube 151 is interference fitted at one end of the laser tube seat 152. The other end of the laser tube seat 152 is interference fitted in the interior of the tail of the shell 140. Specifically, a third mounting hole 260 is arranged in the tail of the shell 140, and the laser tube seat 152 is interference fitted in the third mounting hole 260. The PCB driving circuit 153 is connected to the tail of the laser tube 151, and the wire 154 is connected to the PCB driving circuit 153. The other end of the wire 154 is connected to a power supply (not shown in the figure). The laser tube 151 can generate divergent laser after the PCB driving circuit 153 is powered.

[0058] More specifically, the collimating lens group 130 in the embodiment can be a single aspheric lens or a two-piece cemented lens, or a component with a spacer ring between the two lenses, which is not specifically limited here.

[0059] Specifically, in the first embodiment of the present application, the press-fit assembly includes an elastic rubber ring 120, as shown in Figure 4As shown, the bottom of the lens group mounting groove 210 is close to the laser tube group 150, and the diaphragm hole 220 is arranged in the bottom of the lens group mounting groove 210, so that the divergent laser of the laser tube group 150 can be emitted to the collimating lens group 130 through the diaphragm hole 220, and the elastic rubber ring 120 is arranged at one end of the lens group mounting groove 210 close to the first mounting hole 200, and after the collimating lens group 130 is mounted in the lens group mounting groove 210, the elastic rubber ring 120 is abutted against the collimating lens group 130, and then when the mirror seat 100 is interference-fitted in the first mounting hole 200, the tail of the mirror seat 100 can abut against the elastic rubber ring 120, so that the elastic rubber ring 120 is pressed, and the elastic rubber ring 120 can tightly press the collimating lens group 130, so as to position the collimating lens group 130 in the lens group mounting groove 210.

[0060] The specific installation process of the laser line module structure provided by the application is described in combination with the first embodiment.

[0061] First, the collimating lens group 130 is mounted in the lens group mounting groove 210, then the elastic rubber ring 120 is abutted against one end of the collimating lens group 130, and then the mirror seat 100 is interference-fitted in the first mounting hole 200, at this time, the tail of the mirror seat 100 abuts against the elastic rubber ring 120, the elastic rubber ring 120 is deformed under force and can position the collimating lens group 130 in the lens group mounting groove 210, then the laser tube group 150 is interference-fitted and mounted in the third mounting hole 260, the power supply (not shown in the figure) is connected, the laser tube component 151 of the laser tube group 150 emits divergent laser, the divergent laser is emitted to the collimating lens group 130 after passing through the diaphragm hole 220, the distance between the laser tube group 150 and the collimating lens group 130 is adjusted to complete focusing, the collimating lens group 130 converts the divergent laser into a collimated laser beam, and the laser tube group 150 is positioned at the tail of the shell 140 under the action of the interference expansion force, then the cylindrical mirror 110 is inserted into the second mounting hole 230 of the mirror seat 100, and is fixed by dispensing, the adjusting force is applied to the mirror seat 100 through the U-shaped groove 240, the adjusting force can push the mirror seat 100 to rotate axially around the spherical center of the second surface 310 of the mirror seat 100 as the rotation center axis, so as to adjust the axial angle of the mirror seat 100, so that the axis of the second mounting hole 230 in the mirror seat 100 is perpendicular to the axis of the shell 140, the collimated laser beam is emitted to the cylindrical mirror 110, and the laser plane screen is formed through transmission, reflection and refraction of the cylindrical mirror 110, and after the adjustment is completed, the positions of the mirror seat 100 and the cylindrical mirror 110 are fixed by dispensing at the joint of the U-shaped groove 240 and the mirror seat 100 and in the two dispensing holes 250, so as to complete the installation of the laser line module structure.

[0062] In the second embodiment of the application, the compression assembly can also be a compression ring 160, as Figure 7As shown, the bottom of the lens group mounting groove 210 is close to the mirror seat 100, the diaphragm hole 220 is arranged on the pressing ring 160, the collimating lens group 130 is located inside the lens group mounting groove 210, the pressing ring 160 is located close to one end of the laser tube group 150, the pressing ring 160 can abut on the collimating lens group 130, so that the collimating lens group 130 can be positioned in the lens group mounting groove 210 by the pressing ring 160, and the outer periphery of the pressing ring 160 has external threads, the pressing ring 160 is internally threaded with the shell 140, facilitating the installation of the pressing ring 160, and when the threaded cooperation is adopted, the axial movement of the pressing ring 160 in the shell 140 can be prevented, thereby avoiding the separation of the pressing ring 160 from the shell 140.

[0063] The second embodiment is similar to the structure of the first embodiment, except that the orientation of the lens group mounting groove 210 in the second embodiment is different, and the pressing ring 160 is used to position the collimating lens group 130, the bottom of the lens group mounting groove 210 in the second embodiment faces the first mounting hole 200, the pressing ring 160 is located at the end of the lens group mounting groove 210, and the diaphragm hole 220 is arranged on the pressing ring 160.

[0064] The specific installation sequence is that the collimating lens group 130 is first installed in the lens group mounting groove 210, then the pressing ring 160 is installed inside the shell 140, the pressing ring 160 presses the collimating lens group 130 to position the collimating lens group 130 in the lens group mounting groove 210, then the laser tube group 150 is interference-fitted in the third mounting hole 260, the focusing is completed after adjusting the distance, and the laser tube group 150 is positioned at the tail of the shell 140 under the expansion force of the interference fit, then the mirror seat 100 is installed, the cylindrical mirror 110 is installed in the second mounting hole 230, then the axial angle of the mirror seat 100 is adjusted and fixed, and finally the U-shaped groove 240 and the mirror seat 100 are glued at the joint and in the two glue dispensing holes 250 to fix the cylindrical mirror 110 and the mirror seat 100.

[0065] In the third embodiment of the present application, the second surface 310 of the mirror seat 100 includes a first part 320 and a second part 330, as shown in Figure 9 and Figure 11 As shown, the first part 320 and the second part 330 are coaxial and can move axially relative to each other, an elastic ring 340 is arranged between the first part 320 and the second part 330, the elastic ring 340 has elasticity and the two end faces of the elastic ring 340 abut on the end of the first part 320 and the second part 330 close to each other respectively, the elastic ring 340 makes the first part 320 and the second part 330 have a tendency to move away from each other, so that the outer periphery of the first part 320 and the outer periphery of the second part 330 can tightly abut on the inner side wall of the first mounting hole 200.

[0066] It should be noted that the first part 320 and the second part 330 are specifically cut from the part of the second surface 310 of the mirror seat 100 which is higher in position, and the part is replaced by the elastic ring 340, so that the first part 320 and the second part 330 can move in the axial direction to adjust the distance between the first part 320 and the second part 330. In the embodiment, the rear inner wall of the first mounting hole 200 is arc-shaped to adapt to the outer periphery of the first part 320 and the outer periphery of the second part 330. The diameter of the arc-shaped surface of the inner wall of the first mounting hole 200 is slightly smaller than the diameter of the spherical surface of the outer periphery of the first part 320 and the second part 330, so that the first part 320 and the second part 330 can be in interference fit with the inner wall of the first mounting hole 200. When the first part 320 and the second part 330 are in interference fit in the first mounting hole 200, the elastic ring 340 between the first part 320 and the second part 330 is automatically compressed, so that the overall diameter of the spherical surface formed by the first part 320 and the second part 330 is reduced, thereby reducing the interference amount with the first mounting hole 200. That is, assuming that the interference amount between the first part 320 and the second part 330 and the first mounting hole 200 is 10 standard units when the first part 320 and the second part 330 are not close to each other, the interference amount can be reduced to 9 standard units by the compression of the elastic ring 340, thereby reducing the interference amount, which can make it easier to install the first part 320 and the second part 330 in the first mounting hole 200. When adjusting the axial angle of the mirror seat 100, the elastic ring 340 is still in a compressed state, thereby reducing the friction caused by interference fit when adjusting the axial angle of the mirror seat 100 (when the friction is reduced, it does not affect the adjustment accuracy of the mirror seat 100), so that it is easier to adjust the axial angle of the mirror seat 100, and after adjusting the angle, glue is applied in the glue applying hole 250 to fix the mirror seat 100, and finally the elastic ring 340 starts to expand to tightly press the first part 320 and the second part 330. Since the first part 320 is fixed to the shell 140 through the glue applying hole 250, the elastic ring 340 can release the elastic force when it expands, thereby tightly abutting the surface of the outer periphery of the second part 330 against the inner wall of the first mounting hole 200.

[0067] By separating the second surface 310 of the mirror seat 100 into the first part 320 and the second part 330, and arranging the elastic ring 340 between the first part 320 and the second part 330, the elastic ring 340 is shrunk during the installation of the mirror seat 100, so that the interference amount is reduced when the mirror seat 100 is interference fitted with the first mounting hole 200, and the friction is reduced when the axial angle of the mirror seat 100 is adjusted, and the adjustment force is also reduced accordingly. After the axial angle adjustment of the mirror seat 100 is completed, the elastic ring 340 begins to expand, so that the elastic ring 340 can fully press the two ends of the first part 320 and the second part 330, so as to tightly abut the inner wall of the first mounting hole 200, thereby improving the connection strength of the mirror seat 100.

[0068] Specifically, in order to facilitate the connection of the first part 320 and the second part 330, a groove 321 is formed on one end of the first part 320 close to the second part 330, and a convex ring 331 is arranged on one end of the second part 330 close to the first part 320. The convex ring 331 is slidingly connected in the groove 321, and the convex ring 331 can slide in the axial direction in the groove 321, so as to connect the first part 320 and the second part 330.

[0069] More specifically, in order to realize the functions of the elastic ring 340 being shrunk and expanded, the elastic ring 340 is arranged to be hollow in the embodiment, and the pressure of the environment in which the first part 320 and the second part 330 are installed in the installation groove of the mirror seat 100 needs to be increased, for example, installation, adjustment and glue dispensing are carried out in a high-pressure chamber (not shown in the figure). After the glue dispensing is completed and the glue is solidified, it is removed from the high-pressure chamber. It can be understood that when the elastic ring 340 is in a high-pressure environment, the gas pressure outside the elastic ring 340 is greater than the internal gas pressure, so the elastic ring 340 is compressed at this time and shrinks. When the elastic ring 340 is removed from the high-pressure chamber, the gas pressure outside the elastic ring 340 decreases, and the elastic ring 340 restores under the action of its own elasticity, so as to abut the first part 320 and the second part 330.

[0070] It should be noted that the hollow interior of the elastic ring 340 is also provided with an elastic sheet, which can increase or decrease the degree of deformation of the elastic ring 340, so as to further increase the interference fitting degree of the first part 320 and the second part 330 with the inner wall of the first mounting hole 200, thereby enhancing the connection strength of the mirror seat 100 and the first mounting hole 200.

[0071] The specific installation process of the laser line module structure provided by the application is described in combination with the above third embodiment:

[0072] The embodiment three is similar to the embodiment one and the embodiment two, but the second surface 310 of the mirror seat 100 in the embodiment three is composed of the first part 320, the second part 330 and the elastic ring 340, the elastic ring 340 is elastic and can be shrunk and expanded, so that the first part 320 and the second part 330 can move axially relative to each other, and the high pressure environment is required in the process of installing the mirror seat 100, for example, in the high pressure chamber (not shown in the figure), when the mirror seat 100 is installed, the elastic ring 340 is shrunk, so that the distance between the first part 320 and the second part 330 is close, so that the mirror seat 100 can be pressed and installed in the first mounting hole 200 with smaller force, and the friction of the interference fit is reduced when the mirror seat 100 is adjusted, so that the angle of the mirror seat 100 can be adjusted with smaller adjusting force, after the adjustment is completed and the mirror seat 100 is fixed in the first mounting hole 200 by the glue in the glue hole 250, the mirror seat 100 can be taken out from the high pressure chamber, after the mirror seat 100 is taken out, the pressure outside the elastic ring 340 is reduced, the elastic ring 340 gradually recovers the deformation to push the first part 320 and the second part 330, because the first part 320 is fixed in the first mounting hole 200 by the glue, the elastic ring 340 pushes the second part 330 to tightly abut against the inner wall of the first mounting hole 200, so as to further improve the connection strength of the mirror seat 100, and the other installation processes are the same as those of the embodiment one and the embodiment two, and will not be described in detail here.

[0073] The technical features of the above embodiments can be combined arbitrarily, and in order to make the description simple, all possible combinations of the technical features in the above embodiments are not described, however, as long as the combinations of the technical features do not exist contradictory, it should be considered that the combinations are within the scope of the present disclosure.

[0074] The above embodiments only express several embodiments of the present disclosure, the description is more specific and detailed, but it cannot be understood as the limitation of the scope of the present disclosure. It should be pointed out that, for ordinary skilled in the art, without departing from the concept of the present disclosure, several modifications and improvements can be made, which are within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be subject to the appended claims.

Claims

1. A laser line module structure, characterized in that, The application relates to a laser collimator, which comprises a shell, the inside of the shell is hollow, and the inside of the shell is sequentially provided with a mirror seat, a collimating lens group and a laser tube group from the head to the tail. The laser tube group is arranged at the tail of the shell, the laser tube group can generate divergent laser light in the shell. The collimating lens group is arranged at the middle of the shell, the shell is provided with a diaphragm hole, the diaphragm hole is located between the collimating lens group and the laser tube group, the divergent laser light passes through the diaphragm hole and directly irradiates on the collimating lens group, and the collimating lens group can form a collimated laser beam from the divergent laser light. The mirror seat is provided with a cylindrical mirror arranged along the radial direction of the mirror seat, the collimated laser beam irradiates on the cylindrical mirror to form a laser plane screen, the tail of the mirror seat is provided with a spherical surface, the spherical surface is in interference fit with the inner side of the head of the shell, the mirror seat can rotate along the spherical surface to adjust the perpendicularity between the cylindrical mirror and the optical axis of the collimated laser beam, the tail of the mirror seat is provided with a first surface and a second surface along the axial direction, the first surface is located in front of the second surface, the first surface is cylindrical, the second surface is spherical, the diameter of the first surface is smaller than the diameter of the second surface, the head of the shell is provided with a first mounting hole, and the diameter of the front inner wall of the first mounting hole is larger than the diameter of the rear inner wall. The second surface of the mirror seat comprises a first part and a second part, the first part and the second part are coaxial and can move axially relative to each other, the first part is provided with a groove at one end close to the second part, the second part is provided with a convex ring at one end close to the first part, the convex ring is slidably connected in the groove, the first part, the second part and the shell are provided with an elastic ring, the two end faces of the elastic ring are respectively abutted against one end of the first part and the second part close to each other, so that the first part and the second part have a mutual moving-away trend, the rear inner wall of the first mounting hole is arc-shaped to adapt to the outer periphery of the first part and the second part, and the diameter of the arc-shaped surface of the inner wall of the first mounting hole is slightly smaller than the diameter of the spherical surface of the outer periphery of the first part and the second part, so that the first part and the second part can be in interference fit with the inner wall of the first mounting hole. The inside of the elastic ring is hollow, the elastic ring can be deformed when the external pressure of the elastic ring is greater than the internal pressure, and the first part and the second part are close to each other. When the external pressure of the elastic ring is smaller than the internal pressure, the elastic ring expands and deforms, the elastic ring pushes the first part and the second part away from each other, and the outer periphery of the first part and the second part abuts against the inner side of the head of the shell.

2. The laser line module structure according to claim 1, characterized in that, When the first part and the second part are installed, the ambient pressure of the elastic ring needs to be increased.

3. The laser line module structure according to claim 2, characterized in that, A second mounting hole is arranged in the mirror seat along the radial direction of the mirror seat, and the cylindrical mirror is inserted into the second mounting hole.

4. The laser line module structure according to claim 3, characterized in that, A U-shaped groove corresponding to the two ends of the second mounting hole is arranged on the side wall of the first mounting hole, the size of the U-shaped groove is larger than that of the second mounting hole, a dot-gluing hole is arranged on the side wall of the first mounting hole and perpendicular to the axis of the second mounting hole, and the combination part of the U-shaped groove and the mirror seat in the dot-gluing hole is filled with glue to fix the mirror seat in the first mounting hole.

5. The laser line module structure of claim 1, wherein, The rotating center of the mirror seat is concentric with the center of the first mounting hole and passes through the bottom of the U-shaped groove. The shell is provided with a lens group mounting groove, one end of the collimating lens group abuts against the bottom of the lens group mounting groove, and the end of the lens group mounting groove is provided with a pressing assembly which can abut against the collimating lens group to position the collimating lens group in the lens group mounting groove.

6. The laser line module structure according to claim 5, characterized in that, The pressing assembly is an elastic rubber ring, the elastic rubber ring has elasticity, the elastic rubber ring abuts against the tail part of the lens holder, and the other end of the elastic rubber ring abuts against the collimating lens group.

7. The laser line module structure of claim 1, wherein, The laser tube group is arranged in the inside of the tail part of the shell in interference fit.

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