CN111360394B

CN111360394B - Laser adjusting mechanism

Info

Publication number: CN111360394B
Application number: CN201811592747.5A
Authority: CN
Inventors: 杨金华
Original assignee: Hangzhou Hikmicro Sensing Technology Co Ltd
Current assignee: Hangzhou Hikmicro Sensing Technology Co Ltd
Priority date: 2018-12-25
Filing date: 2018-12-25
Publication date: 2021-09-17
Anticipated expiration: 2038-12-25
Also published as: CN111360394A

Abstract

The invention discloses a laser adjusting mechanism. Laser adjustment mechanism includes adjustable laser seat (2), first laser adjusting screw (41) and second laser adjusting screw (42), and adjustable laser seat (2) are provided with first regulation breach (51) including base (21), middle seat (22) and laser module mount pad (23) interconnect in proper order between base (21) and middle seat (22) with be provided with second regulation breach (52) between laser module mount pad (23), middle seat (22) are connected in first laser adjusting screw (41) with base (21), second laser adjusting screw (42) are connected laser module mount pad (23) and middle seat (22), first regulation screw hole (61) with second regulation screw hole (62) stagger each other. By adopting the laser adjusting mechanism, the laser emitting direction of the laser module can be conveniently adjusted, and the whole laser adjusting mechanism has simple and reliable structure; the installation is convenient; the manufacturing cost is low.

Description

Laser adjusting mechanism

Technical Field

The invention relates to the technical field of laser module adjustment for laser indication, in particular to a laser adjusting mechanism.

Background

Nowadays, laser adjusting mechanisms are widely used in precision fields such as medical treatment, laser ranging, laser welding and laser positioning. The laser indication accuracy adjustment in common photoelectric equipment is not precise in professional field, repeated adjustment is not needed, and the current technical research is less. Common photoelectric equipment is mostly handheld outdoor equipment, has small volume and cannot be directly applied to a professional laser adjusting mechanism; in addition, the professional laser adjusting mechanism cannot be widely applied due to the complex structure, the plurality of structures and the high cost.

It is therefore desirable to have a solution that overcomes or at least alleviates at least one of the above-mentioned drawbacks of the prior art.

Disclosure of Invention

It is an object of the present invention to provide a laser adjustment mechanism to overcome or at least alleviate at least one of the above-mentioned disadvantages of the prior art.

The technical problems to be solved by the invention are as follows: design a small, be convenient for installation and adjustable laser module installation mechanism.

To this end, the present invention provides a laser adjustment mechanism comprising: an adjustable laser seat, a first laser adjusting screw and a second laser adjusting screw,

the adjustable laser seat comprises a base, a middle seat and a laser module mounting seat which are sequentially connected with each other, wherein a first adjusting gap is arranged between the base and the middle seat, a second adjusting gap is arranged between the base and the laser module mounting seat,

the first laser adjusting screw penetrates through the middle seat and the first adjusting notch and is screwed into a first adjusting threaded hole in the base,

the second laser adjusting screw penetrates through the laser module mounting seat and the second adjusting notch and is screwed into a second adjusting threaded hole in the middle seat,

wherein the first and second adjustment threaded holes are staggered with respect to each other.

Preferably, the adjustable laser seat is provided with a mounting hole, and the mounting hole is located at the outer side of the first adjusting threaded hole and the outer side of the second adjusting threaded hole.

Preferably, the laser adjusting mechanism further comprises a laser module, a laser module mounting hole is formed in the laser module mounting seat, the laser module is fixed in the laser module mounting hole through glue dispensing, and the laser module is mounted in the laser module mounting hole from the base.

Preferably, the head of the laser module mounting seat is a conical head, and the inner wall of the exit hole of the laser module mounting seat is provided with an extinction thread.

Preferably, the middle seat and the laser module mounting seat are cylindrical, and the axes of the middle seat and the laser module mounting seat coincide, wherein the middle seat and the laser module mounting seat are provided with radial protruding parts for arranging through holes allowing the first laser adjusting screw and the second laser adjusting screw to pass through. Further preferably, the size of the base is larger than the diameters of the middle base and the laser module mounting base.

Preferably, the adjustable laser seat is integrally formed by plastic injection molding.

Preferably, the heads of the first and second laser adjustment screws are provided with hexagonal socket holes.

Preferably, the height dimension of the first and second adjustment indentations is set in the range of 2mm to 5 mm.

Preferably, a root fillet is arranged at the root of the first and second adjusting notches.

Preferably, the laser adjustment mechanism further comprises a first snap ring and a second snap ring,

the first snap ring is buckled on the first laser adjusting screw and is matched with the head of the first laser adjusting screw to limit the middle seat in the axial direction,

and the second clamping ring is buckled on the second laser adjusting screw and matched with the head of the second laser adjusting screw, and the laser module mounting seat is limited in the axial direction.

Preferably, first laser adjusting screw and second laser adjusting screw include the polished rod section that is close to the head, and the screw thread section that is located the afterbody be provided with the draw-in groove on the polished rod section with first snap ring and the cooperation of second snap ring, the screw thread section sets up to fine thread.

Preferably, the periphery of the laser module mounting seat is provided with an avoiding slotted hole.

By adopting the laser adjusting mechanism, the laser emitting direction of the laser module can be conveniently adjusted, and the whole laser adjusting mechanism has simple and reliable structure; the installation is convenient; the manufacturing cost is low.

Drawings

Fig. 1 is a schematic perspective view of a laser adjustment mechanism according to an embodiment of the present invention.

Fig. 2 is a schematic front view of the laser adjustment mechanism shown in fig. 1.

Fig. 3 is a schematic top view of the laser adjustment mechanism of fig. 1.

Fig. 4 is a schematic exploded view of the laser adjustment mechanism of fig. 1.

Fig. 5 is a schematic elevation view of an adjustable laser mount.

Fig. 6 is a schematic sectional view taken along line a-a in fig. 5.

Fig. 7 is a schematic sectional view taken along line B-B in fig. 5.

Figures 8 and 9 are schematic diagrams illustrating root fillets at the root of the adjustment notches on the adjustable laser mount.

FIG. 10 is a schematic view of adjustment by tightening a first laser adjustment screw.

FIG. 11 is a schematic view of adjustment by tightening a second laser adjustment screw.

Fig. 12 is a schematic view of the installation of the laser module.

Fig. 13 and 14 are schematic views of a laser adjustment screw. FIG. 15 is a schematic view of a snap ring.

FIG. 16 is a schematic view of an adjustable laser mount with an escape slot.

Fig. 17 is a schematic of a laser adjustment range. In the figure, the dashed circle indicated by S1 represents the adjustment range of the laser center when the notch height is 3 mm; the dashed circle indicated by S2 indicates the adjustment range of the laser center when the notch height is 2 mm.

Fig. 18 is a schematic diagram illustrating an adjustment manner when the second laser adjustment screw is rotated, wherein the direction indicated by P1 is a direction in which the laser module mounting base or the laser module is adjusted in a deflection manner when the second laser adjustment screw is rotated clockwise, and the direction indicated by P2 is a direction in which the laser module mounting base or the laser module is adjusted in a deflection manner when the second laser adjustment screw is rotated counterclockwise.

Reference numerals:

Detailed Description

In the drawings, the same or similar reference numerals are used to denote the same or similar elements or elements having the same or similar functions. Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

In the description of the present invention, the terms "central", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore, should not be construed as limiting the scope of the present invention.

As shown in fig. 1 to 4, a laser adjustment mechanism of an embodiment of the present invention includes: the adjustable laser seat 2, a first laser adjusting screw 41 and a second laser adjusting screw 42. The illustrated laser adjustment mechanism is compact, for example, having overall dimensions of 18-30mm in length, 9-15mm in width, and 20-30mm in height.

The adjustable laser seat 2 comprises a base 21, an intermediate seat 22 and a laser module mounting seat 23 which are connected with each other in sequence. A first adjusting gap 51 is arranged between the base 21 and the middle seat 22, so that a gap is formed between the base 21 and the middle seat 22, and the relative rotation is realized; a second adjustment notch 52 is provided between the base 21 and the laser module mounting seat 23, so that a gap is provided between the laser module mounting seat 23 and the middle seat 22, and the relative rotation is possible.

The first laser adjusting screw 41 passes through the middle seat 22 (on which a middle seat through hole 221 is provided, see fig. 6) and the first adjusting notch 51, and is screwed into the first adjusting threaded hole 61 on the base 21. The second laser adjusting screw 42 passes through the laser module mounting seat 23 (on which a laser module mounting seat is disposed, not shown) and the second adjusting notch 52, and is screwed into the second adjusting threaded hole 62 on the middle seat 22. Therefore, the middle seat 22 and/or the laser module mounting seat 23 are/is rotated by the rotation of the first laser adjusting screw 41 and/or the second laser adjusting screw 42, so that the adjustment of the laser direction is realized. The rotation is mainly achieved by deformation of the first and

second coupling portions

25 and 26.

As shown in fig. 6 and 7, the first adjustment screw hole 61 and the second adjustment screw hole 62 are offset from each other, more specifically, are circumferentially offset from each other. Accordingly, referring to fig. 6 and 7, the body of the first adjustment notch 51 is located on the left side, and the boundary of the first adjustment notch 51 is located on the right side, and forms an angle a1 with the bisecting plane. The body of the second adjustment notch 52 is located on the right side and the boundary of the second adjustment notch 52 is located on the left side and forms an angle a2 with the bisecting plane. Thus, on the one hand, the rotations of the first laser adjustment screw 41 and of the second laser adjustment screw 42 do not interfere with each other; on the other hand, it is convenient to achieve adjustment in various directions by a combination of both the rotation of the first laser adjustment screw 41 and the rotation of the second laser adjustment screw 42.

In order to mount the whole adjustable laser base 2, referring to fig. 1, the adjustable laser base 2 is provided with a mounting hole 24. That is, the laser adjusting mechanism is fixed on the installation plane through screws, and 2 screw holes are reserved. M2 or M3 screws are recommended for fixation, and the size and the position of the screw hole can be adjusted according to the actual use requirement.

It is understood that the installation of the whole laser adjusting mechanism can be arranged according to actual requirements, and is not limited to the installation mode.

Advantageously, the mounting holes 24 are located outside the first and second adjustment threaded

holes

61, 62. This is beneficial to reduce the size of the middle seat 22 and the laser module mounting seat 23, and further improves the compactness of the whole adjustable laser seat 2 structure.

Referring to fig. 12, the laser adjusting mechanism further includes a laser module 1. Be provided with laser module mounting hole 231 on the laser module mount pad 23, the point of laser module 1 is glued and is fixed in laser module mounting hole 231. The laser module 1 is installed into the laser module installation hole 231 from the base 21. The unilateral clearance between the laser module 1 and the laser module mounting hole 231 on the adjustable laser seat is set within the range of 0.02-0.2mm, for example.

To reduce the reflection phenomenon during laser emission, the head of the laser module mounting base 23 is provided with a tapered appearance for reducing reflection. And extinction threads are added around the emergent hole, so that the phenomenon of faculae is further reduced. Specifically, referring to fig. 12, the head of the laser module mount 23 is provided as a tapered head 234, and a light-extinction thread is provided on the inner wall of the exit hole 233 (see fig. 12) of the laser module mount 23. The extinction thread is not used for matching with a screw, but is used for preventing the reflection of light on the inner wall from influencing the normal use of the emitted laser. The matt threads cause the reflected light to become diffusely reflected and gradually disappear. The laser light emitted from the laser module 1 is emitted from the exit hole 233. The taper angle setting range r is, for example, 120-.

Referring to fig. 2 and 3, the intermediate base 22 and the laser module mounting base 23 are generally cylindrical, and their axes coincide. With particular reference to fig. 3, the intermediate seat 22 and the laser module mounting seat 23 are provided with radial projections for providing perforations allowing said first and second laser adjustment screws 41, 42 to pass through. For example, a mid-mount through hole 221 is shown in fig. 6. An intermediate seat through hole 221 is provided at the intermediate seat 22, which is a radial projection, for being penetrated by the first laser adjustment screw 41. This configuration is advantageous in reducing the overall bulk of the intermediate mount 22 and the laser module mount 23 and in improving the elastic properties of the deformation, i.e. the adjustment is achieved by elastic deformation of part of the tubular wall.

Referring to fig. 6 and 7, the tubular wall of the elastically deformed portion is actually the second connection portion 26 between the intermediate seat 22 and the laser module mounting seat 23, and the first connection portion 25 between the base 21 and the intermediate seat 22. The first and

second connection portions

25, 26 are provided as partial tubular walls (partial tubular walls, or notched tubular walls) which contribute to an increased elastic deformation performance.

Advantageously, the diameter of the intermediate base 22 is the same as the diameter of the laser module mounting base 23, or the diameter of the intermediate base 22 is slightly larger than the diameter of the laser module mounting base 23. The base 21 is larger than the diameters of the intermediate base 22 and the laser module mounting base 23.

The tunable laser mount 2 may be made of any suitable material, such as metal and plastic. The adjustable laser base 2 may be formed or manufactured by any suitable process, such as welding, snap-fit connection, etc. to connect the parts together. Preferably, the adjustable laser seat 2 is integrally formed by plastic injection molding. When a plastic construction is used. The adjustable laser seat 2 insulates the laser, and can effectively avoid electrostatic breakdown.

If adjustable laser seat adopts the metal material, then need paste the insulating piece and insulate, for convenient location and reduction when guaranteeing to paste to the outward appearance influence, adjustable laser seat head sets up the insulating piece correspondingly and pastes the recess.

Referring to fig. 13, the heads 401 of the first and second laser adjustment screws 41, 42 are provided with hexagonal socket holes 405. Therefore, the first laser adjusting screw 41 and the second laser adjusting screw 42 are driven to rotate conveniently for adjustment.

The height dimensions of the first and

second adjustment notches

51, 52 can be set as desired. Preferably, the height dimension of the first and

second adjustment notches

51 and 52 is set in the range of 2mm to 5 mm. Thus, the length of the adjusting screw can be correspondingly set in the range of 6-10mm, for example, the screwing length is set in the range of 4-6 mm; of course, it may be longer or shorter.

Further preferably, the height dimensions of the first and

second adjustment notches

51 and 52 are set in the range of 2mm to 3 mm. The height dimension here is a dimension in the vertical direction of the paper surface in fig. 2 and 5. The height dimension is generally not more than 5mm, and an excessively large height dimension will result in a large adjustment range, which is likely to cause structural member breakage. An adjustable offset range of ± 13 ° can be achieved, for example, at a height of 2mm, corresponding to a scene 8m away, the adjustable range being a circular range of 3.7m in diameter (see the circle represented by S2 of fig. 17). The adjustable range is ± 19.5 ° when the height is 3mm, and is a circular range (see a circle represented by S1 in fig. 17) with a diameter of 5.6m corresponding to a scene 8m away, which can satisfy ordinary accuracy adjustment. The height dimensions of the first adjustment notch 51 and the second adjustment notch 52 are not small enough, otherwise the installation of the first snap ring 31 and the second snap ring 32 is not facilitated.

Referring to fig. 8 and 9, a root fillet 501 is provided at the notch root of the first and

second adjustment notches

51 and 52. Therefore, the first and

second adjustment notches

51 and 52 are prevented from being broken due to local stress concentration at the notch root portions during angle adjustment. The fillet radius of the root fillet can be set as required. For example, in the range of 0.5mm to 1.0 mm.

Referring to fig. 2, the laser adjustment mechanism further includes a first snap ring 31 and a second snap ring 32. The first snap ring 31 is fastened on the first laser adjusting screw 41 and is matched with the head of the first laser adjusting screw 41 to axially limit the middle seat 22. The second snap ring 32 is fastened on the second laser adjusting screw 42 and is matched with the head of the second laser adjusting screw 42 to axially limit the laser module mounting seat 23. In other words, the heads of the snap ring and the laser adjusting screw clamp the corresponding middle seat 22 or the laser module mounting seat 23 therebetween, so that the middle seat 22 or the laser module mounting seat 23 is adjusted upward or downward by the rotation of the laser adjusting screw, and the whole middle seat 22 or the whole laser module mounting seat 23 is rotated to realize the adjustment of the laser emitting direction.

Referring to fig. 13 and 4, the first laser adjusting screw 41 and the second laser adjusting screw 42 include a polished rod section 402 adjacent to the head 401, and a threaded section 403 at the tail, wherein a clamping groove 404 is arranged on the polished rod section 402 to be matched with the first clamping ring 31 and the second clamping ring 32, and the threaded section is provided with fine threads. And the fine thread is adopted, so that the fine adjustment degree is improved.

The heads 401 of the first and second laser adjustment screws 41, 42 are cylindrical, thereby facilitating installation and improving the compactness of the overall structure. The head 401 partially extends into the outer peripheral contour of the laser module mount 23 and mates with an escape slot 232 disposed about the outer periphery of the laser module mount 23.

As described above, in order to avoid the adjacent structure, it is preferable that the outer circumference of the laser module mounting base 23 is provided with an avoidance groove hole 232. Thereby, the compactness of the whole structure is improved and the interference with the external structure is avoided. Referring to fig. 16, three escape slot holes 232 are provided on the outer periphery of the laser module mounting base 23. The two lower relief slots are for facilitating insertion of the first laser adjustment screw 41 and the second laser adjustment screw 42.

It will be appreciated that the adjusted portion of the second laser adjustment screw 42 does not change when the first laser adjustment screw 41 is tightened or loosened. Accordingly, when the second laser adjustment screw 42 is tightened or loosened, the adjusted portion of the first laser adjustment screw 41 does not change. Tightening means clockwise rotation and loosening means counterclockwise rotation. It is understood that it is within the scope of the present invention to arrange the tightening in a counter-clockwise rotation and to arrange the tightening in a clockwise rotation.

The adjustment is further described below in conjunction with fig. 18.

Referring to fig. 18, when the second laser adjustment screw 42 is screwed clockwise, the threads are locked, the head 401 of the second laser adjustment screw 42 moves downward, and the head 401 applies downward pressing force to the radial protrusion of the laser module mounting seat 23. The height (size of the opening) of the second adjustment notch 26 is reduced when the radial protrusion of the laser module mounting seat 23 is pressed. The entire laser module mounting base 23 is deformed and shifted toward the line connecting the center of the laser base and the center of the second laser adjusting screw 42, as shown by arrow P1. That is, the tapered head of the laser module mounting seat 23 moves in the direction of the arrow P1, so that the laser module mounting seat 23 tilts.

When the second laser adjusting screw 42 is screwed counterclockwise, the thread is loosened, the second snap ring 32 applies upward pressing force to the radial protrusion of the laser module mounting seat 23, and after the upward pressing force is applied, the height (size of the opening) of the second adjusting notch 26 is increased, and the entire laser module mounting seat 23 is deformed and is shifted in the opposite direction, as shown by an arrow P2. So that the laser module mounting base 23 is inclined in the opposite direction.

If in the application process, the adjusting range of the laser seat appearance close to other structural parts is limited, the local material of the laser seat can be removed to increase the adjusting range. In addition, because the laser seat needs to be deviated during adjustment, the movement space needs to be reserved by 0.5-3 mm.

Finally, it should be pointed out that: the above examples are only for illustrating the technical solutions of the present invention, and are not limited thereto. Those of ordinary skill in the art will understand that: modifications can be made to the technical solutions described in the foregoing embodiments, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. A laser adjustment mechanism, comprising: an adjustable laser seat (2), a first laser adjusting screw (41) and a second laser adjusting screw (42),

the adjustable laser seat (2) comprises a base (21), an intermediate seat (22) and a laser module mounting seat (23) which are sequentially connected with each other, wherein a first adjusting notch (51) is arranged between the base (21) and the intermediate seat (22), a second adjusting notch (52) is arranged between the intermediate seat (22) and the laser module mounting seat (23),

the first laser adjusting screw (41) penetrates through the middle seat (22) and the first adjusting notch (51) and is screwed into a first adjusting threaded hole (61) on the base (21), the elastic deformation of a first connecting part (25) between the base (21) and the middle seat (22) is realized by rotating and adjusting the first laser adjusting screw (41),

the second laser adjusting screw (42) penetrates through the laser module mounting seat (23) and the second adjusting notch (52) and is screwed into a second adjusting threaded hole (62) on the middle seat (22), the elastic deformation of a second connecting part (26) between the middle seat (22) and the laser module mounting seat (23) is realized by rotating and adjusting the second laser adjusting screw (42),

wherein the first adjustment threaded hole (61) and the second adjustment threaded hole (62) are circumferentially offset from each other.

2. The laser adjustment mechanism of claim 1, characterized in that the adjustable laser seat (2) is provided with a mounting hole (24), and the mounting hole (24) is located outside the first adjustment threaded hole (61) and the second adjustment threaded hole (62).

3. The laser adjusting mechanism according to claim 1, characterized in that the laser adjusting mechanism further comprises a laser module (1), a laser module mounting hole (231) is formed in the laser module mounting seat (23), the laser module (1) is fixed in the laser module mounting hole (231) by dispensing, and the laser module (1) is mounted into the laser module mounting hole (231) from a base (21).

4. Laser adjustment mechanism according to claim 1,

the head of the laser module mounting seat (23) is a conical head (234), and an extinction thread is arranged on the inner wall of an emergent hole (233) of the laser module mounting seat (23).

5. Laser adjustment mechanism according to claim 1,

the middle seat (22) and the laser module mounting seat (23) are cylindrical, and the axes of the middle seat and the laser module mounting seat are overlapped, wherein radial protruding portions are arranged on the middle seat (22) and the laser module mounting seat (23) and used for arranging through holes allowing the first laser adjusting screws (41) and the second laser adjusting screws (42) to penetrate through.

6. The laser adjustment mechanism of claim 5,

the adjustable laser seat (2) is integrally formed by plastic injection molding.

7. The laser adjustment mechanism of claim 1, characterized in that the heads (401) of the first laser adjustment screw (41) and the second laser adjustment screw (42) are provided with hexagonal socket holes (405).

8. Laser adjustment mechanism according to any of claims 1-7, characterized in that the height dimension of the first adjustment indentation (51) and the second adjustment indentation (52) is set in the range of 2mm to 5 mm.

9. Laser adjustment mechanism according to any of claims 1-7, characterized in that a root fillet (501) is provided at the notch root of the first adjustment notch (51) and the second adjustment notch (52).

10. The laser light adjustment mechanism of any one of claims 1-7, further comprising a first snap ring (31) and a second snap ring (32),

the first snap ring (31) is buckled on the first laser adjusting screw (41) and is matched with the head of the first laser adjusting screw (41) to limit the middle seat (22) in the axial direction,

and the second clamping ring (32) is buckled on the second laser adjusting screw (42) and matched with the head of the second laser adjusting screw (42) to axially limit the laser module mounting seat (23).

11. The laser adjusting mechanism of claim 10, wherein the first laser adjusting screw (41) and the second laser adjusting screw (42) comprise a light rod section (402) adjacent to the head portion (401) and a threaded section (403) at the tail portion, a clamping groove (404) is arranged on the light rod section (402) and matched with the first clamping ring (31) and the second clamping ring (32), and the threaded section (403) is arranged to be a fine thread.

12. The laser adjusting mechanism of claim 1, wherein the laser module mounting seat (23) is provided with an escape slot hole (232) at its outer periphery.