A laser line projector

Abstract

The present invention relates to a laser line projector, which includes a housing. The housing is provided with a laser window for emitting laser and a window cover for covering the laser window. The window cover is movably arranged on the housing and can rotate relative to the housing. This laser line projector has a simple and compact structure. Users can conveniently adjust the position of the break point of the laser projection line, which is not only beneficial to more convenient and efficient use, but also can avoid repositioning and debugging the laser line projector, thereby effectively reducing errors and improving accuracy.

Description

Technical Field

[0001] The present invention relates to the technical field of measuring tools, and particularly relates to a laser line projector. Background Art

[0002] A laser line projector, also known as a laser level or a laser alignment instrument, is mainly used in various measurement, layout, installation, quality control acceptance... etc. work in the dry / wet categories of decoration projects in the construction engineering field, as well as other flexible applications in related industries such as material processing and equipment installation industries.

[0003] Existing laser line projectors generally include a housing and a laser head disposed inside the housing. The bottom of the housing is usually provided with a base for horizontal placement, and the housing is usually further provided with three laser windows for emitting laser beams. A window cover (or protective cover) protruding outward from the housing is respectively provided at the laser windows. The window cover closes the corresponding laser window, and a light-transmitting member with high light transmittance, such as optical glass, is provided along the circumferential direction of the window cover to allow the laser beam to pass through. A conical mirror corresponding to the laser head is usually provided in the space inside the window cover. The laser beam generated by the laser head forms a laser plane (i.e., a 360-degree laser line reflected by the conical mirror) after being reflected by the conical mirror, and the laser planes formed at the three laser windows are perpendicular to each other. The laser plane passes through the light-transmitting member and exits the window cover to form a laser projection line.

[0004] In the prior art, in order to fix the light-transmitting member, at least three connecting columns (or columns) for restricting the light-transmitting member are usually provided along the circumferential direction of the window cover. However, due to the existence of the connecting columns, the laser line reflected from the conical mirror will inevitably be partially blocked, resulting in the problem of broken lines in the projected laser line. For example, when the laser line is transmitted onto a wall, the laser projection line transmitted onto the wall will inevitably have breakpoints, resulting in discontinuous laser projection lines, which affects the user's use. Especially when the position of the power-off is exactly the position where the user needs to work (such as marking), the user can only re-place and debug the laser line projector so that the position of the breakpoint deviates from the position where the work is required. In the whole process, not only the operation is troublesome and re-debugging takes a lot of time, but also a certain working error will be generated, greatly reducing the accuracy of measurement and / or marking. Summary of the Invention

[0005] The purpose of the present invention is to improve the deficiencies in the prior art, and provide a laser line projector with a simple and compact structure, which allows the user to conveniently adjust the position of the breakpoint in the laser projection line, not only facilitating more convenient and efficient use, but also avoiding re-placement and debugging of the laser line projector, thereby effectively reducing errors and improving accuracy.

[0006] In the first aspect of the present invention, to solve the problems that the position of the break point of the existing laser line projector is non-adjustable, resulting in inconvenient use and reduced accuracy, a laser line projector is provided, including a housing. The housing is provided with a laser window for emitting laser light and a window cover for covering the laser window. The window cover is movably arranged on the housing and can rotate relative to the housing. In this solution, the window cover for the laser line to emit is movably arranged on the housing and has the freedom to rotate relative to the housing. During actual use, when this laser line projector is placed at the set position and the laser projection lines are adjusted, if the break point of the laser projection line is exactly projected at the position where work is required (such as marking), the user only needs to rotate the window cover to effectively change the position of the break point, so that the break point can deviate from the position where work is required, thereby enabling the laser line projector to work properly. In this process, there is no need to re-place and re-adjust the laser line projector, which is not only more convenient and efficient to use, but also can reduce errors and improve accuracy.

[0007] To enable the window cover to rotate, preferably, the window cover and the housing form a rotating pair, and the window cover can rotate relative to the housing by a set angle. The rotating pair is used to realize the movable connection between the window cover and the housing, and the rotation angle of the window cover can be determined according to actual needs. For example, the window cover can rotate relative to the housing within a range of 360 degrees, so that the user can conveniently adjust the position of the break point on the laser projection line according to actual needs.

[0008] In the second aspect of the present invention, to solve the problem of efficient assembly and disassembly between the window cover and the housing, further, at least two constraint components are included. The constraint components are detachably installed on the housing and constrain the window cover to the housing. In this solution, the constraint and fixation of the housing are realized by setting the constraint components, and the constraint components themselves are fixed to the housing in a detachable manner, which is very convenient for the quick installation and disassembly of the window cover, and is convenient for production assembly and later maintenance and replacement.

[0009] In one solution, one side of the window cover is provided with a laser channel for passing the laser beam. A card slot is arranged in the circumferential direction of the laser channel. The card slot is a ring structure. One end of the constraint component is snapped into the card slot, and the other end is detachably fixed to the housing. By snapping one end of the constraint component into the card slot of the ring structure, not only can the constraint of the window cover be realized, but also the window cover can rotate relative to the constraint component within a range of 360 degrees; and the other end of the constraint component is fixed to the housing, which can realize the fixation of the window cover, so that the window cover can only rotate relative to the housing and cannot fall off from the housing.

[0010] In another solution, a laser channel for passing a laser beam is provided on one side of the window cover. At least two card slots are provided in the circumferential direction of the laser channel. The card slots are arc-shaped structures. One end of each of the constraint members is respectively snapped into the card slots, and the other end is respectively detachably fixed to the housing. In this solution, one card slot corresponds to one constraint member. By providing at least two card slots and the corresponding number of constraint members in the circumferential direction of the window cover, the window cover can be constrained in the circumferential direction, and the window cover can also rotate relative to the constraint members. The rotation angle of the window cover is less than the degree of the central angle corresponding to the arc-shaped card slot; and the other end of the constraint member is fixed to the housing, so that the window cover can only rotate relative to the housing and cannot fall off the housing.

[0011] To achieve detachable connection, preferably, the housing is provided with a plurality of connection holes, and each connection hole is respectively arranged along the circumferential direction of the laser window. The constraint member is provided with a plurality of through holes adapted to the connection holes. So as to align by the cooperation of the through holes and the connection holes, and detachable connection can be achieved by using bolts.

[0012] To facilitate snapping the constraint member into the card slot, preferably, the constraint member includes a connection portion for cooperating with the housing and a protrusion formed on the connection portion. The through hole is provided in the connection portion, and the protrusion is adapted to the card slot for snapping into the card slot. So as to achieve the cooperation between the constraint member and the card slot.

[0013] Preferably, there are two such constraint members, and the connection portion is a plate-shaped structure. The connection portions are respectively formed with notch openings having a semi-circular structure, and the protrusions are formed on the side walls of the notch openings. When the connection portions of the two constraint members are butted together, a circular notch opening can be spliced, and the protrusions formed on the notch opening can just be snapped into the corresponding card slots, thereby realizing the constraint and fixation of the window cover.

[0014] Preferably, the protrusion is a semi-circular ring structure.

[0015] In the third aspect of the present invention, the positioning problem of the constraint member is to be solved. Further, the housing is provided with a positioning groove, and the shape of the connection portion is adapted to the positioning groove, or, the connection portion is formed with a positioning protrusion adapted to the positioning groove. In this solution, if the shape of the connection portion is the same as the shape of the positioning groove, when installing the constraint member, just snap the connection portion into the corresponding positioning groove to achieve the positioning of the constraint member, so that the protrusion formed on the connection portion can be snapped into a predetermined depth and a predetermined position of the card slot; similarly, when the connection portion is formed with a positioning protrusion adapted to the positioning groove, when installing the constraint member, just snap the positioning protrusion into the corresponding positioning groove to achieve the positioning of the constraint member, so that the protrusion formed on the connection portion can be snapped into a predetermined depth and a predetermined position of the card slot.

[0016] In the fourth aspect of the present invention, the problem of assembly and fitting of the window cover is to be solved. Further, the window cover includes a window frame, a light-transmitting component, and a window lid. The window frame includes a base and at least three connecting columns constructed on the same side of the base. The window lid is detachably fixed to the connecting columns and encloses at least three windows for passing laser lines on the side of the window frame.

[0017] The light-transmitting component is disposed between the base and the window lid and closes the windows, so that the base, the light-transmitting component, and the window lid jointly enclose a closed internal cavity.

[0018] The laser channel is disposed on the base and communicates with the internal cavity. The card slot is constructed on the base and is located on the side of the base away from the internal cavity. In this solution, the window cover includes a window frame, a light-transmitting component, and a window lid. The restraint and fixation of the light-transmitting component are realized through the detachable connection between the window frame and the window lid. The three components can form a whole and are movably connected to the housing through the card slot, so that the window cover can rotate as a whole to effectively adjust the position of the interruption point of the laser projection line.

[0019] For the convenience of installation and fixation of the light-transmitting component, further, the base and / or the window lid are provided with grooves for restraining the light-transmitting component, and limiting grooves are provided inside the connecting columns. The limiting grooves are connected to the grooves provided on the base. The limiting grooves of the connecting columns are used to guide and limit the light-transmitting component during the assembly process of the light-transmitting component, so that the light-transmitting component can be snapped into the grooves of the base along the limiting grooves, thereby achieving the purpose of quickly assembling the light-transmitting component. The light-transmitting component snapped into the grooves can be firmly fixed between the base and the window lid under the common restraint of the limiting grooves and the grooves, and can effectively prevent falling off during use.

[0020] For firmly fixing the light-transmitting component, further, a gasket is provided between the light-transmitting component and the base, and / or a gasket is provided between the light-transmitting component and the window lid. By providing the gasket, not only can the fixation of the light-transmitting component be made more firm, avoiding shaking or jitter during use, but also the effects of enhancing sealing, dust prevention, shock absorption, and waterproofing can be achieved, thereby effectively protecting the internal laser head.

[0021] Preferably, the gasket is a rubber gasket or a silicone gasket.

[0022] Compared with the prior art, using a laser line projector provided by the present invention has the following beneficial effects:

[0023] 1. This laser line projector has a simple and compact structure. Users can conveniently adjust the position of the breakpoint of the laser projection line, which is not only beneficial for more convenient and efficient use, but also can avoid repositioning and debugging the laser line projector, thus effectively reducing errors and improving accuracy.

[0024] 2. This laser line projector has a reasonable structural design. The window cover and the housing can be efficiently assembled and disassembled for later maintenance.

[0025] 3. This laser line projector can effectively solve the positioning problem of the constraint components, enabling the constraint components to be accurately and efficiently snapped into the predetermined positions.

[0026] 4. In this laser line projector, the window covers can be conveniently and efficiently assembled together, and have good effects of sealing, dust-proof, shock-absorbing and waterproofing, which can effectively protect the internal laser head. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for use in the embodiments. It should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other relevant drawings can be obtained based on these drawings without creative efforts.

[0028] Figure 1 One of the structural schematic diagrams of a laser line projector provided in Embodiment 1 of the present invention.

[0029] Figure 2 Another structural schematic diagram of a laser line projector provided in Embodiment 1 of the present invention.

[0030] Figure 3 A structural schematic diagram of two constraint components cooperating with each other in a laser line projector provided in Embodiment 1 of the present invention.

[0031] Figure 4 A structural schematic diagram of the window frame in a laser line projector provided in Embodiment 1 of the present invention.

[0032] Figure 5 A structural schematic diagram of the window cover in a laser line projector provided in Embodiment 1 of the present invention.

[0033] Figure 6 A structural schematic diagram of the window cover cooperating with two constraint components in a laser line projector provided in Embodiment 1 of the present invention.

[0034] Figure 7 For Figure 6 the rear view.

[0035] Figure 8 The Figure 7 A-A view of

[0036] Description of the markings in the figure

[0037] Housing 100, positioning groove 101, connecting hole 102, laser window 103, laser head 104,

[0038] Constraint member 200, connecting portion 201, through hole 202, protrusion 203,

[0039] Window cover 300, window frame 301, base 302, connecting column 303, laser channel 304, card slot 305, light-transmitting member 306, window lid 307, bolt 308, groove 309, limit groove 310, gasket 311. Detailed implementation manners

[0040] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Usually, the components of the embodiments of the present invention described and shown in the accompanying drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed present invention, but only represents the selected embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0041] Embodiment 1

[0042] Please refer to Figures 1-8 , in this embodiment, a laser line projector is provided, which includes a housing 100. The housing 100 can adopt an existing shape. For example, a cuboid structure can be preferably adopted. As Figure 1 and Figure 2 shown, the housing 100 is provided with a laser window 103 for emitting laser and a window cover 300 for covering the laser window 103. The window cover 300 is movably arranged on the housing 100 and can rotate relative to the housing 100. As shown in the figure, the number of the laser window 103 and the window cover 300 can be determined according to actual needs, and usually can be 1-3. As an example, as Figure 1 and Figure 2 shown, in this embodiment, the housing 100 is provided with three laser windows 103, and a window cover 300 is movably arranged at each of the three laser windows 103, and the three window covers 300 are respectively arranged on three mutually perpendicular surfaces of the housing 100. As Figure 1 and Figure 2As shown, the laser projection lines transmitted through the three window covers 300 can be perpendicular to each other; in this embodiment, the window covers 300 for emitting laser lines are movably arranged on the housing 100 and have the freedom to rotate relative to the housing 100. During actual use, when this laser line projector is placed at the set position and the laser projection lines are adjusted, if the break point of the laser projection line exactly projects onto the position where work (such as marking) needs to be done, the user only needs to rotate the window cover 300 to effectively change the position of the break point, so that the break point can deviate from the position where work needs to be done, thereby enabling the laser line projector to work properly. In this process, there is no need to re-place and re-adjust the laser line projector, which is not only more convenient and efficient to use, but also can reduce errors and improve accuracy.

[0043] Preferably, the window cover 300 and the housing 100 can form a rotating pair, and the window cover 300 can rotate a set angle relative to the housing 100, that is, the rotation angle of the window cover 300 can be determined according to actual needs. For example, the window cover 300 can rotate relative to the housing 100 within a range of 90°, the window cover 300 can rotate relative to the housing 100 within a range of 180°, and the window cover 300 can rotate relative to the housing 100 within a range of 360° etc., so that the user can conveniently adjust the position of the break point on the laser projection line according to actual needs.

[0044] To facilitate the efficient assembly and disassembly between the window cover 300 and the housing 100, in a further solution, this laser line projector further includes at least two constraint components 200. The constraint components 200 are respectively detachably installed on the housing 100 and constrain the window cover 300 to the housing 100. In this embodiment, the constraint and fixation of the housing 100 are achieved by setting the constraint components 200, and the constraint components 200 themselves are fixed to the housing 100 in a detachable manner, which is very convenient for the quick installation and disassembly of the window cover 300, and is convenient for production assembly and later maintenance and replacement.

[0045] In this embodiment, the structure of the window cover 300 can be the same as that of the existing window cover 300. The difference is that the window cover 300 provided in this embodiment can be improved for movable connection on the basis of the existing window cover 300, rather than using the fixed connection in the prior art; to achieve movable connection, as a preferred implementation manner, as Figures 4-8 shown, one side of the window cover 300 is provided with a laser channel 304 for passing through the laser beam, and a card slot 305 is configured in the circumferential direction of the laser channel 304. The card slot 305 can be an annular structure, as Figure 5 、 Figure 7 and Figure 8As shown, one end of the constraint member 200 is snapped into the card slot 305, and the other end is detachably fixed to the housing 100; this can not only achieve the constraint of the window cover 300, but also enable the window cover 300 to rotate relative to the constraint member 200 within a range of 360 degrees; and the other end of the constraint member 200 is fixed to the housing 100, which can achieve the fixation of the window cover 300, so that the window cover 300 can only rotate relative to the housing 100 and cannot fall off from the housing 100.

[0046] As another preferred embodiment, a laser channel 304 for passing a laser beam is provided on one side of the window cover 300. At least two card slots 305 are provided in the circumferential direction of the laser channel 304. The card slots 305 are arc-shaped structures. One end of the constraint member 200 is respectively snapped into the card slots 305, and the other end is respectively detachably fixed to the housing 100; for example, three arc-shaped card slots 305 are evenly provided in the circumferential direction of the laser channel 304. The degree of the central angle corresponding to the card slot 305 can be determined according to actual needs, and one card slot 305 corresponds to one constraint member 200. By providing at least two card slots 305 and corresponding numbers of constraint members 200 in the circumferential direction of the window cover 300, the constraint of the window cover 300 can be achieved in the circumferential direction, and the window cover 300 can also rotate relative to the constraint member 200. The rotation angle of the window cover 300 is less than the degree of the central angle corresponding to the arc-shaped card slot 305; and the other end of the constraint member 200 is fixed to the housing 100, which can achieve the fixation of the window cover 300, so that the window cover 300 can only rotate relative to the housing 100 and cannot fall off from the housing 100.

[0047] To achieve the detachable connection of the constraint member 200, preferably, a plurality of connection holes 102 are provided on the housing 100, and the connection holes 102 are respectively arranged along the circumferential direction of the laser window 103, as Figure 2 and Figure 3 shown, the constraint member 200 is provided with a plurality of through holes 202 adapted to the connection holes 102, so as to align by the cooperation of the through holes 202 and the connection holes 102, and the detachable connection can be achieved by using bolts 308.

[0048] To facilitate snapping the constraint member 200 into the card slot 305, as a preferred embodiment, the constraint member 200 includes a connection portion 201 for cooperating with the housing 100 and a protrusion 203 formed on the connection portion 201. The through hole 202 is provided on the connection portion 201. The protrusion 203 is adapted to the card slot 305 and is used for snapping into the card slot 305; so as to achieve the cooperation between the constraint member 200 and the card slot 305. The shape of the connection portion 201 can be determined according to actual needs and is mainly used to connect the housing 100. Preferably, as Figure 3, Figure 6 , Figure 7 and Figure 8 As shown in Figure 8 , in one embodiment, there are two of the constraint members 200, and the connecting portions 201 are both plate-like structures. The connecting portions 201 are respectively formed with notch openings having a semi-circular structure, and the protrusions 203 are formed on the side walls of the notch openings. When the connecting portions 201 of the two constraint members 200 are butted together, a circular notch opening can be spliced, and the protrusions 203 formed on the notch openings can just be snapped into the corresponding card slots 305, as Figure 1 , Figure 2 , Figure 6 , Figure 7 and Figure 8 shown, so as to realize the constraint and fixation of the window cover 300, enabling the window cover 300 to rotate relative to the housing 100 within a range of 360 degrees.

[0049] The protrusion 203 has various embodiments. Preferably, the protrusion 203 can preferably adopt a semi-circular ring structure, as Figure 3 shown, so that after the two connecting portions 201 are butted together, a ring-shaped protrusion 203 can be spliced, which is more convenient to cooperate with the notch opening having a ring structure.

[0050] To prevent the window cover 300 from rotating by itself during use, in a more perfect solution, there is a certain squeezing force between the constraint member 200 and the card slot 305, and / or between the window cover 300 and the housing 100. The squeezing force is distributed along the central axis direction of the laser window 103. The squeezing force can be generated by reasonably setting dimensional parameters, or can be generated by arranging elastic gaskets 311 between the protrusion 203 and the card slot 305, or between the housing 100 and the window cover 300. By using the squeezing force, the friction force when the window cover 300 rotates can be effectively increased, thereby effectively preventing the window cover 300 from rotating by itself, such as rotating by itself under the action of its own gravity, etc.

[0051] Embodiment 2

[0052] To solve the positioning problem of the constraint member 200, the main difference between this Embodiment 2 and Embodiment 1 is that in the laser line projector provided in this embodiment, the housing 100 is provided with a positioning groove 101, and the shape of the connecting portion 201 is adapted to the positioning groove 101. Since the shape of the connecting portion 201 is adapted to the shape of the positioning groove 101, such as being the same, when installing the constraint member 200, only by snapping the connecting portion 201 into the corresponding positioning groove 101 can the positioning of the constraint member 200 be realized, so that the protrusion 203 formed on the connecting portion 201 can be snapped into a predetermined depth and a predetermined position of the card slot 305, thereby effectively solving the positioning problem of the constraint member 200, as Figure 1 andFigure 2 As shown, in this embodiment, the positioning groove 101 is a rectangular structure, and the two connecting portions 201 of the two constraint members 200 can be exactly spliced into a rectangular structure to be adapted to the positioning groove 101.

[0053] Similarly, in another solution, the connecting portion 201 is configured with a positioning protrusion 203 adapted to the positioning groove 101. When installing the constraint member 200, the positioning protrusion 203 only needs to be snapped into the corresponding positioning groove 101 to achieve the positioning of the constraint member 200, so that the protrusion 203 constructed on the connecting portion 201 can be snapped into a predetermined depth and a predetermined position of the card slot 305, and the rapid and accurate positioning of the constraint member 200 can also be achieved.

[0054] Embodiment 3

[0055] To solve the assembly and fitting problems of the window cover 300, the main difference between this Embodiment 3 and Embodiment 1 or Embodiment 2 is that in the laser line projector provided in this embodiment, the window cover 300 includes a window frame 301, a light-transmitting member 306, and a window lid 307. As Figures 4-8 shown, the window frame 301 includes a base 302 and at least three connecting columns 303 constructed on the same side of the base 302. The window lid 307 is detachably fixed to the connecting columns 303 and encloses at least three windows for passing laser lines on the side of the window frame 301. As an example, in this embodiment, the base 302 is provided with four connecting columns 303, and the window lid 307 is fixed to the connecting columns 303 by bolts 308. As Figure 6 shown, so as to enclose four windows;

[0056] The light-transmitting member 306 is disposed between the base 302 and the window lid 307 and closes the windows, so that the base 302, the light-transmitting member 306, and the window lid 307 jointly enclose a closed internal cavity to accommodate the conical reflector. The laser line inside the window cover 300 can be emitted through the light-transmitting member 306 to form a laser transmission line on the ground or wall surface, etc.;

[0057] The laser channel 304 is disposed on the base 302 and is communicated with the internal cavity. The card slot 305 is constructed on the base 302 and is located on the side of the base 302 away from the internal cavity. As Figures 5-8 shown, in this embodiment, the window cover 300 includes a window frame 301, a light-transmitting member 306, and a window lid 307. The constraint and fixation of the light-transmitting member 306 are realized through the detachable connection between the window frame 301 and the window lid 307. The three components can form a whole and are movably connected to the housing 100 through the card slot 305, so that the window cover 300 can rotate as a whole to effectively adjust the position of the break point of the laser projection line.

[0058] In this embodiment, the window frame 301 and / or the window cover 307 can be made of plastic or metal. Preferably, in this embodiment, both the window frame 301 and the window cover 307 can be made by die-casting aluminum for rapid prototyping.

[0059] For the convenience of installation and fixation of the light-transmitting component 306, in a further solution, the base 302 and / or the window cover 307 are provided with grooves 309 for restraining the light-transmitting component 306, and a limiting groove 310 is arranged inside the connecting column 303. The limiting groove 310 is connected to the groove 309 arranged on the base 302, as Figure 4 and Figure 8 shown. The limiting grooves 310 of the connecting columns 303 are used to guide and position the light-transmitting component 306 during the assembly process of the light-transmitting component 306, so that the light-transmitting component 306 can be snapped into the groove 309 of the base 302 along the limiting groove 310, thereby achieving the purpose of rapid assembly of the light-transmitting component 306. The light-transmitting component 306 snapped into the groove 309 can be firmly fixed between the base 302 and the window cover 307 under the common restraint of the limiting groove 310 and the groove 309, and can effectively prevent it from falling off during use.

[0060] For the reliable fixation of the light-transmitting component 306, in a further solution, a gasket 311 is arranged between the light-transmitting component 306 and the base 302, and / or a gasket 311 is arranged between the light-transmitting component 306 and the window cover 307, as Figure 8 shown; by arranging the gasket 311, not only can the fixation of the light-transmitting component 306 be more reliable, avoiding shaking or jitter during use, but also it can play roles in enhancing sealing, dust prevention, shock absorption and waterproofing, etc., so as to effectively protect the internal laser head 104.

[0061] Preferably, the gasket 311 can preferably be a rubber gasket 311 or a silicone gasket 311.

[0062] It can be understood that in this embodiment, the light-transmitting component 306 can be optical glass, light-transmitting plastic, etc., which will not be elaborated here.

[0063] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention.

Claims

1. A laser line projector, characterized in that, It includes a housing and a laser head. The housing is provided with a laser window for emitting laser and a window cover for covering the laser window. The window cover protrudes outward from the housing, and a light-transmitting component is arranged along the circumferential direction of the window cover. The window cover includes a window frame, a light-transmitting component, and a window lid. The window frame includes a base and at least three connecting columns constructed on the same side of the base. The window lid is fixed to the connecting columns and encloses at least three windows for passing laser lines on the side of the window frame. The light-transmitting component is arranged between the base and the window lid and closes the windows. A conical reflector corresponding to the laser head is arranged in the space inside the window cover. The laser beam generated by the laser head forms a laser plane after being reflected by the conical reflector. The laser plane passes through the light-transmitting component and exits the window cover. The connecting columns will partially block the laser plane reflected from the conical reflector, resulting in breakpoints in the projected laser line. The window cover and the housing form a rotating pair, so that the window cover can rotate relative to the housing, and the position of the breakpoint is changed by rotating the window cover.

2. The laser line projector according to claim 1, characterized in that, It further includes at least two restraining components. The restraining components are detachably installed on the housing and restrain the window cover to the housing.

3. The laser line projector according to claim 2, wherein, A laser channel for passing the laser beam is arranged on one side of the window cover. A card slot is arranged along the circumferential direction of the laser channel. The card slot is a ring structure. One end of the restraining component is snapped into the card slot, and the other end is detachably fixed to the housing. Or, a laser channel for passing the laser beam is arranged on one side of the window cover. At least two card slots are arranged along the circumferential direction of the laser channel. The card slots are arc-shaped structures. One end of the restraining component is respectively snapped into the card slots, and the other end is respectively detachably fixed to the housing.

4. The laser line projector according to claim 3, characterized in that, The housing is provided with a number of connecting holes, and each connecting hole is arranged along the circumferential direction of the laser window. The restraining component is provided with a number of through holes adapted to the connecting holes.

5. The laser line projector according to claim 4, wherein The restraining component includes a connecting portion for cooperating with the housing and a protrusion constructed on the connecting portion. The through hole is arranged on the connecting portion. The protrusion is adapted to the card slot and is used for being snapped into the card slot.

6. The laser line projector according to claim 5, wherein, It includes two such restraining components, and the connecting portion is a plate-like structure. The connecting portions are respectively constructed with notch openings in a semi-circular structure, and the protrusions are constructed on the side walls of the notch openings.

7. The laser line projector according to claim 5, wherein, The housing is provided with a positioning groove, and the shape of the connecting portion is adapted to the positioning groove. Or, the connecting portion is constructed with a positioning protrusion adapted to the positioning groove.

8. The laser line projector according to any one of claims 1-7, characterized in that, The window lid is detachably fixed to the connecting columns.

9. The laser line projector according to claim 8, wherein The base and / or the window lid is provided with a groove for restraining the light-transmitting component, and a limiting groove is arranged inside the connecting column. The limiting groove is connected to the groove arranged on the base.

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