Adjustable laser calibration structure and electric tool

Abstract

The utility model discloses an adjustable laser calibration structure, which is applied to an electric tool, the electric tool comprises a shell, the adjustable laser calibration structure comprises a laser assembly and an adjusting assembly, the laser assembly comprises a point laser and a line laser which can project point laser and line laser towards the working surface of the electric tool, and the adjusting assembly is arranged on the shell. The point laser is fixed on the shell, and the line laser is rotatably connected to the shell; the adjusting assembly is installed on the shell, and the adjusting assembly is connected with the line laser and drives the line laser to rotate so that the linear laser projected by the line laser can pass through the point laser. According to the utility model, by operating the adjusting assembly, a straight line projected by the line laser can be adjusted, so that the straight line coincides with a light spot projected by the spot laser.

Description

Technical Field

[0001] The utility model relates to the field of electric tools, in particular to an adjustable laser calibration structure and an electric tool with the adjustable laser calibration structure. Background Art

[0002] Common cutting, sawing and various drilling tools are usually equipped with laser lines as an aid to achieve fast and efficient alignment in application scenarios where auxiliary lines need to be aligned to find the working position, helping users to work accurately and efficiently. However, in actual applications, the lasers configured for these tools have a relatively precise structure. Line lasers may include laser sources, focusing prisms, scattering prisms, etc., and the structural accuracy is often affected by various reasons such as transportation, vibration, stress, etc., causing the laser line to deviate from the initial position, resulting in the inability to accurately locate the working point, making the laser configuration useless and the user experience poor. Therefore, there is an urgent need in the art to provide a laser structure that can be adjusted and calibrated.

[0003] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to a person skilled in the art. Utility Model Content

[0004] The utility model aims to provide an adjustable laser line structure on an electric tool, which is used to solve the problem of laser deviation.

[0005] To achieve the above-mentioned purpose, an embodiment of the utility model provides an adjustable laser calibration structure, which is applied to an electric tool. The electric tool shown includes a housing, and the adjustable laser calibration structure includes a laser assembly and an adjustment assembly. The laser assembly includes a point laser and a line laser that can project point laser and line laser toward a working surface of the electric tool. The point laser includes a laser light source, and the line laser includes a laser light source and a refractor. The point laser is fixedly mounted on the housing, and the line laser is rotatably connected to the housing. The adjustment assembly is mounted on the housing, and the adjustment assembly is connected to and drives the line laser to rotate.

[0006] In one or more embodiments of the present invention, the adjustment assembly includes a screw, a nut and an adjustment knob, the nut is fixed to the housing, one end of the screw passes through the nut and can selectively drive the line laser to rotate, and the other end is exposed outside the housing and connected to the adjustment knob.

[0007] In one or more embodiments of the present invention, two sets of the adjustment components are provided, which are respectively arranged on both sides of the line laser.

[0008] In one or more embodiments of the utility model, a rotating connection structure is provided between the line laser and the shell, and the adjustment assembly and the rotating connection structure correspond to the two ends of the line laser respectively; the rotating connection structure includes a rotating shaft rotatably mounted to the line laser or the shell, and two slots formed in the shell or the line laser, and the two slots are used to position the two ends of the rotating shaft in the shell.

[0009] In one or more embodiments of the present invention, a receiving space is provided on the housing, and the line laser is confined in the receiving space and can rotate in the receiving space.

[0010] In one or more embodiments of the present utility model, the adjustment assembly also includes an adjustment bracket fixed to the line laser, the adjustment bracket protruding with two connecting columns, the shell is provided with a slide groove, the adjustment bracket is limited in the slide groove, the nuts are respectively provided on both sides of the adjustment bracket, and the screw rods respectively resist the connecting columns.

[0011] In one or more embodiments of the present invention, a knob adjustment spring is squeezed between the adjustment knob and the housing, and / or a bracket adjustment spring is sleeved on each of the screw rods and the connecting column.

[0012] In one or more embodiments of the present invention, the line laser is arranged below the point laser, and the distance between the projection of the point laser on the working surface of the power tool and the point projected by the point laser on the working surface of the power tool is in the range of 10mm-800mm.

[0013] In one or more embodiments of the present utility model, a dust cover is provided on the housing and is located at the light outlet of the point laser and / or line laser.

[0014] The utility model also provides an electric tool, comprising the adjustable laser calibration structure as described above.

[0015] Compared with the prior art, the adjustable laser line structure on the electric tool according to the embodiment of the utility model can make the line laser produce a slight rotation by adjusting the components after the emitted laser line is offset due to transportation or other reasons, and then adjust the emitted light to realign it with the point laser, thereby providing the tool with a correct travel route and assisting the tool in its work. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the utility model, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 is a side view of an electric tool according to an embodiment of the utility model;

[0018] Figure 2 is a front view of an electric tool according to an embodiment of the utility model;

[0019] Figure 3 is a cross-sectional view of an electric tool according to an embodiment of the utility model;

[0020] Figure 4 is a partially disassembled diagram of an electric tool according to an embodiment of the utility model;

[0021] Figure 5 is a partial enlarged view of a housing according to an embodiment of the utility model;

[0022] Figure 6 It is a principle diagram of a line laser according to one embodiment of the utility model.

[0023] Description of main reference numerals:

[0024] 10-housing, 11-accommodating space, 12-slide groove, 13-slot hole, 14-dust cover, 21-point laser, 22-line laser, 221-convex column, 23-switch, 31-screw, 32-nut, 33-adjusting knob, 34-adjusting bracket, 341-connecting column, 35-bracket adjusting spring, 36-knob adjusting spring. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0026] As mentioned in the background technology, when the laser of the existing power tool is working, the projected light spot needs to be located on the projection straight line. However, since the focusing prism and scattering cylindrical lens on the line laser are affected by vibration and temperature during transportation, the straight line projected by the line laser may deviate and fail to coincide with the light spot projected by the point laser. The adjustable laser calibration structure of the utility model aims to solve this technical problem by adding an adjustment component to adjust the projection angle of the line laser.

[0027] like Figures 1 to 5 As shown, an adjustable laser calibration structure according to an embodiment of the utility model is applied to an electric tool, and the electric tool includes a housing 10. The adjustable laser calibration structure includes a laser assembly 20 and an adjustment assembly. The laser assembly 20 includes a point laser 21 and a line laser 22 that can project point lasers and line lasers toward the working surface of the electric tool. The point laser 21 is fixed to the housing 10, and the line laser is rotatably connected to the housing 10. The adjustment assembly is mounted on the housing 10. The adjustment assembly is connected to and drives the line laser 22 to rotate so that the line laser projected by the line laser 22 passes through the point laser.

[0028] In this embodiment, the point laser 21 can be an LED laser head, which can project a light spot on the surface of the workpiece. The line laser 22 can also use an LED laser head, and a focusing prism and a scattering cylindrical lens are provided at its front end, so that the line laser 22 can project a straight line on the surface of the workpiece, and the straight line represents the travel route of the power tool. Since the line laser 22 is rotatably connected to the housing 10, when the straight line projected by the line laser 22 deviates and cannot coincide with the light spot projected by the point laser 21, the adjustment component is used to drive the line laser 22 to rotate slightly, so that the linear laser it projects passes through the point laser projected by the point laser 21, completing the calibration of the laser line and assisting the normal operation of the power tool.

[0029] In one embodiment, the adjustment assembly includes a screw 31, a nut 32, and an adjustment knob 33. The nut 32 is fixed to the housing 10, one end of the screw 31 passes through the nut 32 and contacts the line laser 22, and the other end is exposed from the housing 10 and connected to the adjustment knob 33. When the line laser 22 needs to be fine-tuned, the adjustment knob 33 is turned, and one end of the screw 31 drives the line laser 22 to rotate under the action of the threaded engagement with the nut 32, so that the angle of the emitted light changes and the projected straight line re-coincides with the light spot projected by the point laser 21, thereby completing the calibration.

[0030] Preferably, two sets of identical adjustment components can be provided, which are relatively arranged on both sides of the line laser 22, one end of each screw rod 31 passes through the corresponding side nut 32 and abuts against the line laser 22, and the other end thereof is exposed from the housing 10 and is provided with an adjustment knob 33. When it is necessary to fine-tune the line laser 22, the two adjustment knobs 33 are turned at the same time, and the two screw rods 31 move to the same side at the same time under the action of the threaded engagement with the nut 32, thereby driving the line laser 22 to rotate, so that the angle of the emitted light is offset and re-overlaps with the light spot projected by the point laser 21, thereby completing the calibration. In this embodiment, both sides of the line laser 22 are abutted by the screw rods 31, so it is more stable and will not shake.

[0031] In order to enable the line laser 22 to rotate relative to the housing 10, a rotating connection structure may be provided between the line laser 22 and the housing 10. In one embodiment, the rotating connection structure includes a rotating shaft rotatably mounted to the line laser 22, and two slots 13 formed in the housing 10, the two slots 13 being used to position both ends of the rotating shaft in the housing 10 to prevent the rotating shaft from being separated from the housing 10. Of course, the rotating shaft may also be fixed to the housing 10, and the slots may be formed on the line laser 22, and the utility model is not limited thereto.

[0032] In one embodiment, the rotating shaft may be a convex column 221 coaxially arranged on both sides of the line laser 22. The two convex columns 221 respectively pass through the surfaces on both sides of the line laser 22 and protrude a short length, and the line laser 22 can rotate around the convex columns 221. Two slots 13 are formed on the housing 10 for accommodating and fixing the ends of the two convex columns 221 respectively.

[0033] Similarly, two bosses 221 can be arranged on the housing (10), two slots 13 are recessed on the surface of the line laser 22, and the bosses 221 are passed through the slots 13 to rotatably mount the line laser 22 to the housing 10.

[0034] It can be imagined that in order to ensure that the electric tool is correctly guided, the straight line projected by the line laser 22 needs to be always parallel to the working direction of the electric tool ( Figure 3 Therefore, the axes of the two bosses 221, the straight line of the working direction of the electric tool, and the straight line of the projection light of the point laser 21 are in the same plane.

[0035] Preferably, in order to improve the stability of the line laser 22 so that it can only rotate around the protruding column 221 without moving or rotating in other directions, a receiving space 11 is provided on the shell 10, and its width is the same as the diameter of the line laser 22, and its extension direction is parallel to the rotation plane of the line laser 22. Therefore, after the line laser 22 is confined in the receiving space 11, it can only rotate around the axis of the protruding column 221 without causing deviation in other directions, thereby improving stability during operation.

[0036] Furthermore, the adjustment assembly also includes an adjustment bracket 34 fixed to the line laser 22, and the adjustment bracket 34 can be integrally arranged with the line laser 22 or not, and the adjustment bracket 34 has two connecting columns 341 protruding in an axial direction perpendicular to the protruding column 221, and two screws 31 abut the connecting columns 341 from both ends, and drive the line laser 22 to rotate by acting on the connecting columns 341. At the same time, a slide groove 12 is provided on the housing 10, which extends in a direction parallel to the extension of the receiving space 11 and is connected to the receiving space 11. The adjustment bracket 34 is limited in the receiving space 11 to improve stability during movement and prevent it from moving or deviating in other directions.

[0037] In one embodiment, the protrusion 221 is arranged on one side close to the light outlet of the line laser 22, and the adjustment bracket 34 is fixed on the other side of the line laser 22. This arrangement makes the position acting on the line laser 22 away from the rotation axis, thereby reducing the angle deviation under the same moving distance, that is, the deviation distance of the line laser 22 projected light when the adjustment knob 33 is turned at the same angle, thereby improving the light adjustment accuracy.

[0038] Preferably, in order to prevent the screw rod 31 and the connecting column 341 from being separated, a bracket adjustment spring 35 is sleeved on the screw rod 31 and the connecting column 341, and the bracket adjustment spring 35 is squeezed between the nut 32 on the same side and the adjustment bracket 34. In addition, a knob adjustment spring 36 is also squeezed between the adjustment knob 33 and the housing 10.

[0039] In actual use, the light spot projected by the point laser 21 can be equivalent to the target position of the tool, and the light projected by the line laser 22 after calibration can be equivalent to the actual movement path of the tool. Therefore, the projected light needs to be closer to the tool body than the light spot, that is, the tool is guided to the target light spot by projecting the light. Figure 3 As shown, the line laser 22 is located below the point laser 21 to avoid light interference. In addition, the central axes of the two lasers intersect inside the housing 10, that is, the emission direction of the line laser 22 is offset from the emission direction of the point laser 21 toward the working surface of the power tool, so that one end of the projected straight line is closer to the tool body, and the straight line is pointed from one end of the power tool to the light spot at the far end.

[0040] It can be imagined that when the distance between the light spot projected by the point laser 21 and the main body of the power tool is farther, the offset between the straight line projected by the line laser 22 and the light spot is more obvious, and the adjustment accuracy is higher at this time. Therefore, the distance between the projection of the point laser 21 on the working surface of the power tool and the far point projected on the working surface of the power tool is in the range of 10mm-800mm, and under the premise of ensuring that the light spot is projected to the working surface, the light spot can be projected as far as possible to ensure that the calibration accuracy is higher and feasible.

[0041] In one embodiment, a dust cover 14 is provided on the housing 10 and is located at the light outlets of the point laser 21 and the line laser 22 respectively, so as to reduce the influence of dust on the two lasers.

[0042] Preferably, a switch 23 connecting the point laser 21 and the line laser 22 is also provided on the housing 10 to control the opening and closing of the two lasers. In one embodiment, the point laser 21 and the line laser 22 are connected to the power supply circuit of the tool and powered by the power supply system of the tool body, or an independent power supply system can be provided for the laser assembly 20, which is not limited in this embodiment.

[0043] Figure 1-5 A saw-type power tool adopting the above-mentioned adjustable laser calibration structure is shown. Of course, the adjustable laser calibration structure can also be applied to other saw-type, cutting-type and drilling-type power tools to assist the tool operation by calibrating them before use.

[0044] For those skilled in the art, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0045] The foregoing description of specific exemplary embodiments of the utility model is for the purpose of illustration and illustration. These descriptions are not intended to limit the utility model to the precise form disclosed, and it is clear that many changes and variations can be made based on the above teachings. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the utility model and its practical application, so that those skilled in the art can realize and utilize various different exemplary embodiments of the utility model and various different options and changes. The scope of the utility model is intended to be defined by the claims and their equivalents.

Claims

1. An adjustable laser calibration structure, applied to an electric tool, the electric tool comprising a housing (10), characterized in that: The adjustable laser calibration structure includes: A laser assembly, comprising a point laser (21) and a line laser (22) capable of projecting point laser and line laser toward a working surface of an electric tool, wherein the point laser (21) comprises a laser light source, and the line laser (22) comprises a laser light source and a refractor; the point laser (21) is fixedly mounted on the housing (10), and the line laser is rotatably connected to the housing (10); and An adjustment component is installed on the housing (10), and the adjustment component is connected to and drives the line laser (22) to rotate.

2. The adjustable laser calibration structure according to claim 1, characterized in that: The adjustment assembly comprises a screw rod (31), a nut (32) and an adjustment knob (33); the nut (32) is fixed to the housing (10); one end of the screw rod (31) passes through the nut (32) and can selectively drive the line laser (22) to rotate; the other end of the screw rod (31) is exposed outside the housing (10) and is connected to the adjustment knob (33).

3. The adjustable laser calibration structure according to claim 2, characterized in that: The adjustment components are provided in two sets, which are respectively arranged on both sides of the line laser (22).

4. The adjustable laser calibration structure according to claim 2, characterized in that: A rotation connection structure is provided between the line laser (22) and the housing (10), the adjustment assembly and the rotation connection structure respectively corresponding to two ends of the line laser (22); the rotation connection structure comprises a rotation shaft rotatably mounted to the line laser (22) or the housing (10), and two slots (13) formed in the housing (10) or the line laser (22), the two slots (13) being used to position the rotation shaft in the housing (10).

5. The adjustable laser calibration structure according to claim 2, characterized in that: The housing (10) is provided with a receiving space (11), and the line laser (22) is confined in the receiving space (11) and can rotate in the receiving space (11).

6. The adjustable laser calibration structure according to claim 2, characterized in that: The adjustment assembly further comprises an adjustment bracket (34) fixed to the line laser (22), the adjustment bracket (34) protruding with two connecting columns (341), the housing (10) being provided with a slide groove (12), the adjustment bracket (34) being limited in the slide groove (12), the nuts (32) being respectively arranged on both sides of the adjustment bracket (34), and the screw rods (31) respectively abutting against the connecting columns (341).

7. The adjustable laser calibration structure according to claim 6, characterized in that: A knob adjustment spring (36) is squeezed between the adjustment knob (33) and the housing (10), and / or a bracket adjustment spring (35) is sleeved on the screw rod (31) and the connecting column (341).

8. The adjustable laser calibration structure according to claim 1, characterized in that: The line laser (22) is arranged below the point laser (21), and the distance between the projection of the point laser (21) on the working surface of the electric tool and the point projected by the point laser (21) on the working surface of the electric tool is in the range of 10 mm to 800 mm.

9. The adjustable laser calibration structure according to claim 1, characterized in that: The housing (10) is provided with a dust cover (14) located at the light outlet of the point laser (21) and / or the line laser (22).

10. An electric tool, characterized in that: It comprises the adjustable laser calibration structure as described in any one of claims 1-9.

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