Flexible leveling mechanism and gas detection equipment for lens modules

Abstract

The present application discloses a flexible leveling mechanism and gas detection equipment for a lens module, wherein the flexible leveling mechanism is provided with a leveling assembly between a first lens housing and a second lens housing, and the leveling assembly includes an elastomer and an adjusting member, wherein both ends of the elastomer are respectively abutted against a first docking surface of the first lens housing and a second docking surface of the second lens housing, and then, one end of the adjusting member is configured to move synchronously with the second docking surface, and the other end passes through the elastomer and is screwed into the first docking surface or a screw-in portion provided on the first docking surface, thereby, by separately adjusting the screw-in amount of each adjusting member into the first docking surface or the screw-in portion, the optical axis of the second lens can be adjusted to be parallel to the optical axis of the first lens, the structure and adjustment operation process are simple and easy to use, thereby solving the technical problems of the complex structure and operation process of the leveling mechanism in the existing scheme.

Description

Technical Field

[0001] The present invention relates to the technical field of leveling structures, and in particular to a flexible leveling mechanism and gas detection equipment for a lens module. Background Art

[0002] In some devices, there may be a requirement to adjust the optical axes of the two lenses to be parallel.

[0003] For example, the device is a laser gas detector, which is usually equipped with a laser module and a visible light module. In order to ensure the visualization of the detection results, it is usually required that the lens optical axes of the laser module and the visible light module are set in parallel, that is, a leveling mechanism is required to adjust the lens optical axes of the laser module and the visible light module to be parallel.

[0004] However, the existing leveling mechanism usually consists of three sheet metals to respectively achieve horizontal adjustment and pitch angle adjustment of the two lens optical axes. It has a complex structure, a cumbersome adjustment operation process, and is inconvenient to use. Summary of the Invention

[0005] In response to at least one aspect of the above-mentioned technical problems, an embodiment of the present application provides a flexible leveling mechanism and a gas detection device for a lens module, wherein the flexible leveling mechanism is provided with a leveling component between the first lens housing and the second lens housing, and the leveling component includes an elastomer and an adjusting member, wherein the two ends of the elastomer are respectively abutted against the first docking surface of the first lens housing and the second docking surface of the second lens housing, and then, one end of the adjusting member is configured to move synchronously with the second docking surface, and the other end passes through the elastomer and is screwed into the first docking surface or the screw-in portion provided on the first docking surface, thereby, by separately adjusting the screw-in amount of each adjusting member into the first docking surface or the screw-in portion, the optical axis of the second lens can be adjusted to be parallel to the optical axis of the first lens. The structure and adjustment operation process are simple and easy to use, thereby solving the technical problem of complex structure and operation process of the leveling mechanism in the existing scheme.

[0006] In a first aspect, an embodiment of the present application provides a flexible leveling mechanism for a lens module, the flexible leveling mechanism comprising:

[0007] A first lens module comprises a first lens housing and a first lens mounted in the first lens housing;

[0008] A second lens module includes a second lens housing and a second lens mounted on the second lens housing, wherein the second lens housing and the first lens housing are stacked along a first direction, and a first mating surface of the first lens housing and a second mating surface of the second lens housing are opposite to each other;

[0009] a leveling assembly installed between the first docking surface and the second docking surface;

[0010] Wherein, the leveling component includes an elastic body and an adjusting member;

[0011] The elastic body extends along the first direction, and two ends of the elastic body respectively abut against the first butting surface and the second butting surface;

[0012] The adjusting member is arranged along the first direction, the first end of the adjusting member is configured to move synchronously with the second docking surface along the first direction, and the second end of the adjusting member passes through the elastic body and is screwed into the first docking surface or a screw-in portion provided on the first docking surface;

[0013] In addition, at least three leveling components that are not in the same straight line are provided between the first docking surface and the second docking surface, so that the optical axis of the second lens is adjusted to be parallel to the optical axis of the first lens by adjusting the screwing amount of each adjustment member into the first docking surface or the screw-in portion.

[0014] In one embodiment, preferably, the flexible leveling mechanism includes a first leveling component and a pair of second leveling components;

[0015] Wherein, along the first direction, the first leveling assembly and the pair of the second leveling assemblies are distributed in an isosceles triangle or an equilateral triangle between the first docking surface and the second docking surface, and the central axis of the isosceles triangle or the equilateral triangle is arranged parallel to the optical axis of the first lens;

[0016] Furthermore, a projection of the first leveling component along the first direction is located on the optical axis of the first lens.

[0017] In one embodiment, preferably, the second docking surface is respectively provided with a first mounting through hole corresponding to the first leveling assembly, and a second mounting through hole corresponding to the second leveling assembly;

[0018] Wherein, the first mounting through hole is a circular hole;

[0019] The second mounting through hole is an arc-shaped hole, and the arc-shaped hole is configured to be an arc with the circular hole as the center and the length of the arc-shaped hole from the circular hole as the curvature radius.

[0020] In one embodiment, preferably, the first mounting through hole is located at an end of the second docking surface away from the second lens, and a pair of second mounting through holes are located at an end of the second docking surface facing the second lens.

[0021] In one embodiment, preferably, the adjusting member includes an adjusting screw, the adjusting screw includes a nut and a stud, and the second docking surface is provided with a mounting through hole;

[0022] The diameter of the nut is larger than the diameter of the mounting through hole, so that after the stud passes through the mounting through hole and the elastic body and is screwed into the first docking surface or the screw-in portion, the elastic body drives the nut and the second docking surface to move synchronously along the first direction through elastic restoring force;

[0023] Alternatively, a limiting groove is provided on the circumferential wall forming the mounting through hole, and the nut is mounted on the second docking surface by axially limiting the limiting groove, so that the nut and the second docking surface move synchronously along the first direction.

[0024] In one embodiment, preferably, a support column is provided on the side of the first docking surface facing the second docking surface, the support column extends along the first direction, the elastomer is sleeved on the outside of the support column, and the support column is provided with a first threaded hole for the stud to be screwed into, and the first threaded hole extends from the end of the support column away from the first docking surface toward the first docking surface.

[0025] In one embodiment, preferably, the elastic body comprises a spring, and along the first direction, the height of the elastic body in the ultimate compression state is greater than the height of the support column;

[0026] The length of the stud is greater than the sum of the height difference between the elastic body and the support column in a free state and the thickness of the second docking surface, so that when the elastic body is in a free state, the stud can be screwed into the first threaded hole;

[0027] wherein the length of the stud is less than the sum of the thickness of the second abutting surface, the height difference between the elastic body and the support column in the ultimate compression state, and the depth of the first threaded hole, and the height difference between the elastic body in the free state and the ultimate compression state is not greater than the depth of the first threaded hole, so that the elastic body is placed between the free state and the ultimate compression state by adjusting the screwing amount of the stud into the first threaded hole; or,

[0028] The length of the stud is smaller than the sum of the thickness of the second docking surface, the height difference between the elastic body and the support column in a free state, and the depth of the first threaded hole, so that the screwing amount of the stud into the first threaded hole is adjustable.

[0029] In one embodiment, preferably, the flexible leveling mechanism further includes:

[0030] a heat dissipation element, provided on a side of the second lens housing facing away from the first lens housing;

[0031] A fixing member, fixedly mounted to the first lens housing;

[0032] In which, the fixing member extends along the first direction, and at a position corresponding to the heat sink, the fixing member is provided with a waist hole arranged along the first direction, and the heat sink is provided with a second threaded hole at the end facing the fixing member, so that when the optical axis of the second lens is adjusted to be parallel to the optical axis of the first lens and the heat sink is fastened to the fixing member by a fixing screw, the heat sink and the second lens housing are configured to be in contact.

[0033] In one embodiment, preferably, a heat-conducting gel is provided on a side of the heat sink facing away from the second lens housing, and the heat sink is elastically abutted against the metal housing on which the flexible leveling mechanism is installed through the heat-conducting gel.

[0034] In a second aspect, an embodiment of the present application provides a gas detection device, which includes a metal shell and a flexible leveling mechanism arranged inside the metal shell, wherein the flexible leveling mechanism is the flexible leveling mechanism mentioned above.

[0035] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0036] An embodiment of the present application provides a flexible leveling mechanism and a gas detection device for a lens module, wherein the flexible leveling mechanism is provided with a leveling assembly between a first lens housing and a second lens housing, and the leveling assembly includes an elastomer and an adjusting member, wherein both ends of the elastomer are respectively abutted against a first docking surface of the first lens housing and a second docking surface of the second lens housing, and then, one end of the adjusting member is configured to move synchronously with the second docking surface, and the other end passes through the elastomer and is screwed into the first docking surface or a screw-in portion provided on the first docking surface, thereby, by separately adjusting the screw-in amount of each adjusting member into the first docking surface or the screw-in portion, the optical axis of the second lens can be adjusted to be parallel to the optical axis of the first lens, and the structure and adjustment operation process are simple and easy to use, thereby solving the technical problems of the complex structure and operation process of the leveling mechanism in the existing scheme. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0038] Figure 1 This is a structural schematic diagram of the flexible leveling mechanism described in an embodiment of the present application installed on a metal casing.

[0039] Figure 2This is a structural schematic diagram of another perspective in which the flexible leveling mechanism described in an embodiment of the present application is installed on a metal housing.

[0040] Figure 3 Schematic diagram of the structure of the flexible leveling mechanism described in the embodiment of the present application.

[0041] Figure 4 This is a schematic structural diagram of the leveling components described in an embodiment of the present application, which are distributed in a quadrilateral between two docking surfaces.

[0042] Figure 5 This is a schematic structural diagram of the leveling components described in an embodiment of the present application, which are distributed in a triangular shape between two docking surfaces.

[0043] Figure 6 This is a structural diagram of the axial limit of the adjusting screw installed on the second docking surface in an embodiment of the present application.

[0044] Figure 7 This is a structural diagram of the stud screwed into the first threaded hole in the embodiment of the present application, wherein: Figure 7 The elastic body is in a free state.

[0045] Figure 8 This is a structural diagram of the stud screwed into the first threaded hole in the embodiment of the present application, wherein: Figure 8 The elastic body is in the ultimate compression state.

[0046] Figure 9 This is a structural schematic diagram of three mounting through holes provided on the second docking surface in an embodiment of the present application, wherein the three mounting through holes form an equilateral triangle.

[0047] Figure 10 Schematic diagram of the structure of the metal cover in the embodiment of the present application.

[0048] Figure 11 Schematic diagram of the installation structure of the metal bottom cover described in the embodiment of this application.

[0049] Wherein, the reference numerals:

[0050] 10-first lens module, 11-first lens housing, 12-first lens, 13-first docking surface,

[0051] 111-first sheet metal, 112-second sheet metal,

[0052] 131-support column, 132-first threaded hole,

[0053] 20-second lens module, 21-second lens housing, 22-second lens, 23-second docking surface,

[0054] 231-mounting through hole, 232-limiting slot,

[0055] 2311-first mounting hole, 2312-second mounting hole,

[0056] 30-Leveling assembly,

[0057] 31-elastic body, 32-adjusting screw,

[0058] 321-Nut, 322-Stud,

[0059] 50-heat sink, 51-second threaded hole,

[0060] 60-fixing piece, 61-waist hole,

[0061] 70-metal shell, 71-metal bottom cover, 72-metal top cover,

[0062] 711-seal ring, 712-adapter shaft, 713-cable,

[0063] 721-wiper assembly, 722-drive motor, 723-laser glass, 724-lens glass, 725-fill light glass,

[0064] 80-lens driver board,

[0065] 90-Laser module driver board,

[0066] X - first direction. DETAILED DESCRIPTION

[0067] In order to better understand the above technical solutions, example embodiments of the present application will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. It should be understood that the present application is not limited to the exemplary embodiments described herein.

[0068] In response to the technical problems in the existing laser gas detector that the leveling mechanism for adjusting the laser module and the visible light module is complex in structure and cumbersome in operation, the present application provides a flexible leveling mechanism and gas detection equipment for a lens module, the flexible leveling mechanism is provided with a leveling assembly between the first lens housing and the second lens housing, the leveling assembly includes an elastomer and an adjusting member, the two ends of the elastomer respectively abut against the first docking surface of the first lens housing and the second docking surface of the second lens housing, then, one end of the adjusting member is configured to move synchronously with the second docking surface, and the other end passes through the elastomer and is screwed into the first docking surface or the screw-in portion provided on the first docking surface, thereby, by separately adjusting the screw-in amount of each adjusting member into the first docking surface or the screw-in portion, the optical axis of the second lens can be adjusted to be parallel to the optical axis of the first lens, the structure and adjustment operation process are simple and easy to use, thereby solving the technical problems of the complex structure and operation process of the leveling mechanism in the existing scheme.

[0069] Figure 1 、 Figure 2 This is a structural diagram of the flexible leveling mechanism installed on the metal shell. Figure 3 It is a structural diagram of the flexible leveling mechanism. Figure 4 、 Figure 5 For the structural diagram of the leveling component located between two mating surfaces, please refer to Figures 1 to 5 A flexible leveling mechanism for a lens module, the flexible leveling mechanism includes a first lens module 10, a second lens module 20 and a leveling assembly 30; wherein, the first lens module 10 includes a first lens housing 11 and a first lens 12 installed on the first lens housing 11; the second lens module 20 includes a second lens housing 21 and a second lens 22 installed on the second lens housing 21, the second lens housing 21 and the first lens housing 11 are stacked along a first direction X, and the first docking surface 13 of the first lens housing 11 and the second docking surface 23 of the second lens housing 21 are opposite to each other; the leveling assembly 30 is installed between the first docking surface 13 and the second docking surface 23.

[0070] In which, the leveling assembly 30 includes an elastic body 31 and an adjusting member; the elastic body 31 extends along the first direction X, and the two ends of the elastic body 31 respectively abut against the first docking surface 13 and the second docking surface 23; the adjusting member is arranged along the first direction X, and the first end of the adjusting member is configured to move synchronously with the second docking surface 23 along the first direction X, and the second end of the adjusting member passes through the elastic body 31 and is screwed into the first docking surface 13 or the screw-in portion provided on the first docking surface.

[0071] In addition, at least three leveling assemblies 30 that are not in the same straight line are provided between the first docking surface 13 and the second docking surface 23, so that the optical axis of the second lens 22 can be adjusted to be parallel to the optical axis of the first lens 12 by adjusting the screwing amount of each adjustment member into the first docking surface 13 or the screwing portion.

[0072] In this embodiment, it should be noted that the flexible leveling mechanism is used to adjust the lens optical axis of the second lens module and the lens optical axis of the first lens module so that the two lens optical axes are parallel; wherein, the first lens module is, for example, a visible light lens module, then the first lens is a visible light lens, and the second lens module is, for example, a laser lens module, then the second lens is, for example, a laser lens. The intention of this embodiment is to adjust the optical axis of the laser lens to be parallel to the optical axis of the visible light lens; of course, it can also be the other way around, with the first lens being a laser lens and the second lens being a visible light lens, and this embodiment does not impose any restrictions on this.

[0073] It can be understood that the laser lens module is usually equipped with a detection laser lens, an indicator laser lens next to the detection laser lens, etc., wherein the detection laser lens is used to emit a detection laser, and the indicator laser lens is used to emit a visible laser within the visible spectrum range; then, relative to the longer detection distance, it can be understood that the distance between the detection laser lens and the indicator laser lens is small and can be ignored, that is, the detection laser lens and the indicator laser lens can be regarded as the same point. At this time, by adjusting the optical axis of the laser lens to be parallel to the optical axis of the visible light lens, the visualization of laser detection can be achieved through the visible light lens.

[0074] Then, in this embodiment, generally speaking, at least three leveling components that are not in the same straight line are set between the first lens housing and the second lens housing, and the leveling component includes an elastomer and an adjusting member, one end of the adjusting member is set to move synchronously with the second docking surface along the first direction, and the other end of the adjusting member passes through the elastomer and is screwed into the first docking surface or the screw-in portion provided on the first docking surface. Therefore, by separately adjusting the screw-in amount of each adjusting member into the first docking surface or the screw-in portion, the optical axis of the second lens can be adjusted to be parallel to the optical axis of the first lens. The structure is simple and the operation is convenient.

[0075] Among them, the first direction is, for example, a vertical direction, the first lens housing and the second lens housing are stacked up and down along the vertical direction, the first lens housing includes a first docking surface facing the second lens housing, and correspondingly, the second lens housing includes a second docking surface facing the first lens housing.

[0076] In this embodiment, at least three leveling components that are not in the same straight line are provided between the first docking surface and the second docking surface, for example, Figure 5 , three leveling components can be set, and the three leveling components that are not in the same straight line can be distributed in a triangle between the two docking surfaces, or combined Figure 4Four leveling components can also be set, and the four leveling components that are not in the same straight line can be distributed in a quadrilateral between the two mating surfaces; thus, it can be understood that by adjusting each leveling component, the optical axis of the second lens installed in the second lens housing can be made parallel to the optical axis of the first lens installed in the first lens housing.

[0077] Specifically, the leveling assembly includes, for example, an elastomer and an adjusting member. The elastomer is, for example, a spring arranged along a first direction. During the adjustment process, the spring is in a compressed state, and the two ends of the spring respectively abut against the first docking surface and the second docking surface; and one end of the adjusting member is configured to move synchronously with the second docking member along the first direction, and then the other end of the adjusting member is screwed into the first docking surface after passing through the spring, or screwed into the screw-in portion provided on the first docking surface.

[0078] On this basis, it can be understood that the relative position relationship of the two docking surfaces can be adjusted by adjusting the screwing amount of each adjusting member into the first docking surface or the screw-in portion, thereby adjusting the optical axis of the second lens to be parallel to the optical axis of the first lens.

[0079] It should be noted that the other end of the adjusting member can be directly screwed into the first docking surface; or, a screw-in portion is provided on the side of the first docking surface facing the second docking surface, and the screw-in portion is, for example, a columnar support column described below. In this case, the other end of the adjusting member can be screwed into the screw-in portion; it can be understood that whether the adjusting member of this embodiment is directly screwed into the first docking surface or screwed into the screw-in portion provided on the first docking surface, the relative position relationship between the two docking surfaces can be adjusted by adjusting the screw-in amount.

[0080] Regarding the above-mentioned leveling assembly, in one possible implementation, the flexible leveling mechanism includes a first leveling assembly and a pair of second leveling assemblies;

[0081] In which, along the first direction X, the first leveling component and a pair of second leveling components are distributed in an isosceles triangle or an equilateral triangle between the first docking surface 13 and the second docking surface 23, and the central axis of the isosceles triangle or the equilateral triangle is arranged parallel to the optical axis of the first lens 12; and the projection of the first leveling component along the first direction X is located on the optical axis of the first lens 12.

[0082] That is, see Figure 5 In this embodiment, three leveling components can be provided, namely a first leveling component (located at Figure 5 center left) and two secondary leveling assemblies (located at Figure 5 center right).

[0083] In which, the projections of the three leveling components (a first leveling component and two second leveling components) along the first direction on the first docking surface are distributed in the form of an isosceles triangle or an equilateral triangle, that is, for example, when distributed in the form of an isosceles triangle, the first leveling component corresponds to the vertex angle of the isosceles triangle, and the two second leveling components correspond to the two base angles of the isosceles triangle; for example, when distributed in the form of an equilateral triangle, the first leveling component and the two second leveling components correspond to the three vertex angles of the equilateral triangle respectively.

[0084] Moreover, the central axis of the isosceles triangle or equilateral triangle should be arranged parallel to the optical axis of the first lens, and the projection of the first leveling component along the first direction should be located on the optical axis of the first lens; at this point, it can be understood that the purpose of leveling can be conveniently achieved by arranging the three leveling components into an isosceles triangle or equilateral triangle.

[0085] In this embodiment, it can be understood that, firstly, the leveling of three leveling components distributed in a triangle is more convenient to implement in terms of operation than the leveling of four leveling components distributed in a quadrilateral because fewer leveling components need to be adjusted.

[0086] Secondly, in this embodiment, the above-mentioned triangle is specifically set to be an isosceles triangle or an equilateral triangle, and the central axis of the isosceles triangle or the equilateral triangle is parallel to the optical axis of the first lens, and the projection of the first leveling component along the first direction is located on the optical axis of the first lens; thus, on the one hand, for example, a pair of second leveling components can be first adjusted so that the optical axis of the second lens and the optical axis of the first lens are located in the same vertical plane, and then, the first leveling component can be adjusted to adjust the optical axis of the second lens to be parallel to the optical axis of the first lens within the vertical plane, which is simple and convenient to operate.

[0087] It can be understood that the isosceles triangle distribution and the equilateral triangle distribution are similar in terms of the leveling effect and leveling efficiency of the optical axis. As for whether it is an isosceles triangle distribution or an equilateral triangle distribution, this is related to the specific size of the aspect ratio of the two docking surfaces and can be set according to the actual size. This embodiment does not impose any restrictions on this.

[0088] In a specific embodiment, the second docking surface 23 is respectively provided with a first mounting through hole 2311 corresponding to the above-mentioned first leveling component, and a second mounting through hole 2312 corresponding to the above-mentioned second leveling component; wherein, the first mounting through hole 2311 is a circular hole; the second mounting through hole 2312 is an arc-shaped hole, and the arc-shaped hole is configured as an arc with the circular hole as the center and the length thereof from the circular hole as the curvature radius.

[0089] In this embodiment, combined with Figure 9In the case where three leveling components are set as mentioned above and the three leveling components form an isosceles triangle or an equilateral triangle, the mounting through hole corresponding to the first leveling component can be specifically set as a circular hole, and then, the pair of mounting through holes corresponding to the second leveling component can be set as arc holes.

[0090] The curvature of the arc-shaped hole should be specifically set based on the circular hole as a circle, and the length of the arc-shaped hole from the circular hole as the curvature radius.

[0091] It can be understood that, in this way, this embodiment can use the first leveling screw (or the first mounting through hole) corresponding to the first leveling assembly as the center of the circle, and make the second lens housing rotate relative to the first lens housing in a plane perpendicular to the first direction (for example, in a horizontal plane), or make the optical axis of the second lens rotate relative to the optical axis of the first lens in the horizontal plane. The rotation angle range can be set to plus or minus 10 degrees, for example, to achieve horizontal adjustment.

[0092] In one specific embodiment, the first mounting through hole 2311 is located at an end of the second docking surface 23 away from the second lens 22 , and the pair of second mounting through holes 2312 are located at an end of the second docking surface 23 facing the second lens 22 .

[0093] That is, for example, for an isosceles triangle, this embodiment can specifically set a pair of base angles of the isosceles triangle at the end facing the lens, and set the vertex angle of the isosceles triangle at the end away from the lens; or, for the second docking surface, the circular first mounting hole can be specifically set at the end away from the second lens, and the pair of arc-shaped second mounting holes can be set at the end facing the second lens.

[0094] It can be understood that, in this way, the first mounting hole is provided at one end of the second docking surface, and the first mounting hole can be used as the center of the circle to adjust the horizontal angle of the other end of the second docking surface where the second mounting hole is provided compared to the first docking surface, that is, to adjust the horizontal angle of the second lens compared to the first lens.

[0095] Regarding the above-mentioned adjustment member, in one possible implementation method, please refer to Figure 3 and Figure 6 The adjusting member includes an adjusting screw 32 , the adjusting screw 32 includes a nut 321 and a stud 322 , and the second docking surface 23 is provided with a mounting through hole 231 ;

[0096] The diameter of the nut 321 is larger than the diameter of the mounting through hole 231, so that after the stud 322 passes through the mounting through hole 231 and the elastic body 31 and is screwed into the first docking surface 13 or the screw-in portion, the elastic body 31 drives the nut 321 and the second docking surface 23 to move synchronously along the first direction X through the elastic restoring force;

[0097] Alternatively, a limiting groove 232 is provided on the circumferential wall forming the mounting through hole 231 , and the nut 321 is axially limited and installed on the second docking surface 23 by the limiting groove 232 , so that the nut 321 and the second docking surface 23 move synchronously along the first direction X.

[0098] That is, in this embodiment, the adjusting member may be specifically an adjusting screw, which includes a nut and a stud. Then, the second docking surface is provided with a mounting through hole for mounting the adjusting screw.

[0099] On the one hand, see Figure 3 , the adjusting screw can, for example, be separately provided with the second docking surface; that is, the diameter of the nut of the adjusting screw is larger than the diameter of the mounting through-hole. In this way, the adjusting screw can pass through the mounting through-hole through the stud during installation and then screw into the first docking surface or the screw-in portion provided on the first docking surface after further passing through the elastomer. Thus, it can be understood that the elastomer can drive the nut and the second docking surface to move synchronously along the first direction through the elastic restoring force, that is, the elastomer in a compressed state can squeeze the second docking surface and the nut together.

[0100] For example, when the adjusting screw is screwed in toward the first docking surface, the nut moves toward the first docking surface. At this time, the elastomer will continue to be squeezed. Due to the limiting effect of the nut on the second docking surface, the second docking surface will follow the nut to move synchronously toward the first docking surface; and when the adjusting screw is screwed out away from the first docking surface, the nut moves away from the first docking surface. At this time, the elastomer is in a compressed state, and it will still squeeze the second docking surface and the nut together during the elastic reset process, so that the second docking surface follows the nut to move away from the first docking surface.

[0101] On the other hand, see Figure 6 The adjusting screw can be installed on the second docking surface with axial limitation, for example; that is, the circumferential wall of the second docking surface forming the mounting through hole is provided with a limiting groove, and then the nut is installed on the second docking surface with axial limitation through the limiting groove, so that the synchronous movement of the nut and the second docking surface along the first direction can also be conveniently achieved.

[0102] In one embodiment, combined with Figure 3 A support column 131 is provided on the side of the first docking surface 13 facing the second docking surface 23, and the support column 131 extends along the first direction X. The elastomer 31 is sleeved on the outside of the support column 131, and the support column 131 is provided with a first threaded hole 132 for the stud 322 to be screwed into. The first threaded hole 132 extends from the end of the support column 131 away from the first docking surface 13 toward the first docking surface 13.

[0103] In this embodiment, in order to support and guide the elastomer, support columns can be respectively set at the positions of the corresponding leveling components of the first docking surface, and the support columns extend along the first direction. Then, a first threaded hole for screwing the stud of the adjusting screw into can be specifically set inside the support column, or in other words, the first threaded hole extends from the end of the support column away from the first docking surface toward the first docking surface; at this time, the elastomer is mounted on the outside of the support column, and the support column can support and guide the elastomer to prevent the elastomer from shifting in position in a plane perpendicular to the first direction.

[0104] That is, the support column mentioned in this embodiment is equivalent to the screw-in portion provided on the first docking surface mentioned above. Of course, according to actual needs, the screw-in portion mentioned above can also be other structural forms, and this application does not impose any restrictions on this.

[0105] The depth of the first threaded hole can be less than or equal to the height of the support column, that is, the maximum screw-in amount that the threaded hole can support the stud is the depth of the threaded hole in the support column, and the stud will not pass through the support column, or the depth of the first threaded hole can be greater than the height of the support column, that is, the first threaded hole passes through the support column and also has a threaded hole depth at the connection position with the support column in the first docking surface, so that the stud can be screwed in and through the support column and then screwed into the first docking surface.

[0106] In a specific embodiment, the elastic body 31 includes a spring. Along the first direction X, the height of the elastic body in the ultimate compression state is greater than the height of the support column 131 .

[0107] That is, it can be understood that when a support column is set inside the spring, the height of the spring should be greater than the height of the support column when it is in the state of extreme compression, thereby ensuring that the two mating surfaces are always in an elastic abutment state of the spring, and preventing the support column from rigidly abutting the two mating surfaces.

[0108] In a specific embodiment, along the first direction X, the length of the stud 322 is greater than the sum of the height difference between the elastomer 31 and the support column 131 in a free state and the thickness of the second docking surface 23, so that when the elastomer 31 is in a free state, the stud 322 can be screwed into the first threaded hole 132.

[0109] The length of the stud 322 is less than the sum of the thickness of the second docking surface 23, the height difference between the elastomer 31 and the support column 131 in the ultimate compression state, and the depth of the first threaded hole 132. In addition, the height difference between the elastomer 31 in the free state and the ultimate compression state is not greater than the depth of the first threaded hole 132, so that the elastomer 31 can be placed between the free state and the ultimate compression state by adjusting the amount of screwing of the stud 322 into the first threaded hole 132.

[0110] Alternatively, the length of the stud 322 is smaller than the sum of the thickness of the second docking surface 23, the height difference between the elastic body 31 and the support column 131 in the free state, and the depth of the first threaded hole 132, so that the screwing amount of the stud 322 into the first threaded hole 132 can be adjusted.

[0111] In this embodiment, in order to ensure the normal adjustment function of the adjusting screw, the length of the stud of the adjusting screw should be between a minimum value and a maximum value.

[0112] Among them, on the one hand, the length of the stud of the adjusting screw should be greater than a minimum value; that is, see Figure 7 When the spring is in a free state, the minimum value is the sum of the height difference between the spring and the support column and the thickness of the second docking surface. In this way, the length of the stud of the adjusting screw is greater than the minimum value, which can ensure that when the spring is in a free state, the stud can be screwed into the first threaded hole of the support column.

[0113] Wherein, on the other hand, the length of the stud of the adjusting screw should be less than a maximum value; that is, see Figure 8 When the spring is in the ultimate compression state, the maximum value is the sum of the thickness of the second docking surface, the height difference between the spring and the support column, and the depth of the first threaded hole. In this way, the length of the stud of the adjusting screw is less than the maximum value, which can ensure that the spring is between the free state and the ultimate compression state by adjusting the amount of screwing of the stud into the first threaded hole; of course, it can be understood that the premise for adjusting the spring between the free state and the ultimate compression state is that the height difference of the spring or the elastic body in the free state and the ultimate compression state should not be greater than the depth of the first threaded hole.

[0114] In addition, in some other embodiments, the maximum value mentioned above can also be set as follows, return to refer to Figure 7 When the spring is in a free state, the maximum value can also be the sum of the thickness of the second docking surface, the height difference between the elastic body (or spring) in a free state and the support column, and the depth of the first threaded hole. In this way, as long as the length of the stud is less than the maximum value, the screwing amount of the stud into the first threaded hole can be adjusted.

[0115] In the case where the depth of the first threaded hole is greater than the height of the support column, the above-mentioned setting of the maximum value of the stud is equivalent to that the length of the stud is less than the sum of the thickness of the second docking surface, the height of the elastomer in the ultimate compression state, and the depth of the threaded hole in the first docking surface, and the height difference of the elastomer in the free state and the ultimate compression state is not greater than the sum of the height of the support column and the depth of the threaded hole in the first docking surface, so that the elastomer can be placed between the free state and the ultimate compression state by adjusting the screw-in amount of the stud; or, the length of the stud is less than the sum of the thickness of the second docking surface, the height of the elastomer in the free state, and the depth of the threaded hole in the first docking surface, so that the screw-in amount of the stud can be adjusted.

[0116] In one possible implementation, combining Figure 3 The flexible leveling mechanism also includes a heat sink 50 and a fixing member 60; the heat sink 50 is provided on the side of the second lens housing 21 facing away from the first lens housing 11; the fixing member 60 is fixedly installed with the first lens housing 11; wherein the fixing member 60 extends along the first direction X, and at a position corresponding to the heat sink 50, the fixing member 60 is provided with a waist hole 61 provided along the first direction X, and the end of the heat sink 50 facing the fixing member 60 is provided with a second threaded hole 51, so that when the optical axis of the second lens 22 and the optical axis of the first lens 12 are adjusted to be horizontal and the heat sink 50 is fastened to the fixing member 60 by a fixing screw, the heat sink 50 and the second lens housing 21 are configured to be in contact.

[0117] It can be understood that the second lens module mentioned above can be, for example, a laser lens module. Since the laser lens module needs to dissipate heat during operation, this embodiment can specifically achieve heat dissipation of the laser lens module through a heat sink.

[0118] Specifically, the heat sink is arranged on a side of the second lens housing away from the first lens housing, and the heat sink is specifically fastened to the fixing member by fixing screws and waist holes arranged along the first direction, wherein the fixing member extends, for example, along the first direction, and the fixing member is fixedly installed with the first lens housing, that is, the heat sink of this embodiment is fixedly installed with the first lens housing through the fixing member.

[0119] Therefore, in combination with the above description, it can be seen that after the optical axis of the second lens is adjusted to be parallel to the optical axis of the first lens by adjusting the screwing amount of each adjusting part into the first docking surface, that is, after the angle of the second lens housing is adjusted compared to the first lens housing, the heat sink can be first held by hand and placed in a position to maintain contact with the second lens housing, and then the fixing screw can be passed through the waist hole and fastened to the second threaded hole of the heat sink, thereby fastening the heat sink to the fixing part while ensuring that the heat sink is in contact with the second lens housing.

[0120] It can be understood that in this way, under the premise of ensuring that the heat sink can effectively dissipate heat for the second lens housing, it is not only convenient for the installation of the heat sink, but also because the heat sink is fastened to the first lens housing (specifically, fastened to the fixing member fixedly installed with the first lens housing) rather than the second lens housing, the leveling of the second lens housing relative to the first lens housing will not be damaged during the fastening and installation of the heat sink.

[0121] If the heat sink is fastened to the second lens housing (specifically, the heat sink can also be fastened to a fixing member fixedly mounted on the second lens housing), then, on the one hand, when the second lens housing is first leveled compared to the first lens housing and then the heat sink is fastened to the fixing member fixedly mounted on the second lens housing, the fastening operation of the heat sink will apply external force to the second lens housing, thereby destroying the leveling of the second lens housing compared to the first lens housing; on the other hand, when the heat sink is first fastened to the fixing member fixedly mounted on the second lens housing and then the second lens housing is leveled compared to the first lens housing, considering that the actual size of the heat sink is usually large, there will be a situation where the projection of the heat sink covers the leveling component mentioned above, and the leveling of the second lens housing cannot be completed at this time. After the size of the heat sink is reduced, the heat dissipation requirements of the second lens housing cannot be met.

[0122] It can be seen that the setting method of fastening the heat sink to the second lens housing will cause difficulties in damaging the leveling of the second lens housing or making it impossible to level it. However, in this embodiment, the heat sink is fastened to a fixing member fixedly mounted to the first lens housing. Since no external force is applied to the second lens housing during the fastening operation of the heat sink, the leveling of the second lens housing will not be damaged.

[0123] Among them, the heat sink is, for example, a heat sink copper block, which maintains contact with the second lens housing to dissipate heat for the second lens housing; at the same time, the heat sink copper block is fastened to the fixing member after the second lens housing is adjusted or leveled compared to the first lens housing.

[0124] The waist holes mentioned above are, for example, arranged in pairs.

[0125] The length of the waist hole 61 along the first direction X should be greater than the height difference between the spring in the free state and the extreme compression state, so as to ensure that the heat sink has installation space on the fixing member to adapt to the second lens housing in different adjustment states.

[0126] Of course, in order to ensure a better heat dissipation effect, the heat sink 50 is provided with a thermal conductive gel on the side facing away from the second lens housing 21. In this way, after the heat sink is adjusted relative to the fixing member (that is, the heat sink is just in contact with the adjusted second lens housing) and fastened to the fixing member, it can be elastically abutted against the metal shell on which the flexible leveling mechanism is installed through the thermal conductive gel.

[0127] It can be understood that since the thermally conductive gel has a certain deformation amount, at this time, after the heat sink is elastically abutted against the metal shell through the deformable thermally conductive gel, it will not destroy the leveling of the flexible leveling mechanism mentioned above (that is, the adjustment of the angle of the second lens shell compared to the first lens shell), and can ensure that the heat sink always maintains contact with the metal shell through the thermally conductive gel to transfer heat to the metal shell.

[0128] Based on the above-mentioned flexible leveling mechanism, the present application also discloses a gas detection device, which includes a metal shell 70 and a flexible leveling mechanism arranged inside the metal shell 70; the flexible leveling mechanism is the flexible leveling mechanism mentioned in the above-mentioned embodiments.

[0129] Specifically, the first lens 12 includes a visible light lens, and the second lens 22 includes a detection laser lens.

[0130] Specifically, the metal housing 70 includes a metal bottom cover 71 and a metal upper cover 72 that are butt-jointed. The metal upper cover 72 is provided with a bearing groove for bearing the flexible leveling mechanism, and the metal bottom cover 71 is used to close the bearing groove.

[0131] The metal bottom cover 71 is provided with a sealing ring 711 and a transfer shaft 712 , for example. The middle of the transfer shaft 712 is used for the cable 713 to pass through.

[0132] The metal upper cover 72 is equipped with a wiper assembly 721, a drive motor 722, a laser glass 723, a lens glass 724, a fill light glass 725 and the like.

[0133] Among them, one side of the above-mentioned fixing member 60 is fixedly installed with the first lens housing 11, and the first lens housing 11 includes a first sheet metal 111 and a second sheet metal 112 that are docked together. Then, the first docking surface 13 can be specifically set on the second sheet metal 112; the other side of the fixing member 60 is fixedly installed with the lens driving plate 80.

[0134] The second lens module 20 is, for example, a laser lens module, and the laser module driving plate 90 of the laser lens module can be specifically locked onto the second sheet metal 112 .

[0135] In addition, in actual use, the metal shell 70 can be rotated with the adapter shaft 712 as the axis. It can be understood that since the heat sink mentioned above is fastened to the fixing member by a fixing screw, during the rotation process, the heat sink can be ensured to be in contact with the second lens housing at all times.

[0136] It can be understood that before the gas detection equipment leaves the factory, the above-mentioned leveling components can be adjusted first to adjust the optical axis of the second lens to be parallel to the optical axis of the first lens. Then, while ensuring that the heat sink is in contact with the second lens housing, the heat sink is fastened to the fixing part. After that, the assembly of the gas detection equipment can be completed.

[0137] The basic principles of the present application have been described above in conjunction with specific embodiments. However, it should be noted that the advantages, strengths, and effects mentioned in this application are merely illustrative and not restrictive, and it should not be assumed that these advantages, strengths, and effects are required of each embodiment of this application. In addition, the specific details disclosed above are merely illustrative and facilitating understanding, and are not restrictive. The above details do not limit this application to necessarily being implemented using the above specific details.

[0138] The block diagrams of the devices, devices, equipment, and systems involved in this application are merely illustrative examples and are not intended to require or imply that they must be connected, arranged, or configured in the manner shown in the block diagrams. As will be appreciated by those skilled in the art, these devices, devices, equipment, and systems can be connected, arranged, or configured in any manner. Words such as "include," "comprise," "have," and the like are open-ended words, meaning "including but not limited to," and can be used interchangeably therewith. The words "or" and "and" used herein refer to the words "and / or" and can be used interchangeably therewith, unless the context clearly indicates otherwise. The word "such as" used herein refers to the phrase "such as but not limited to," and can be used interchangeably therewith.

[0139] It should also be noted that in the apparatus, device, and method of the present application, each component or each step can be decomposed and / or recombined, and such decomposition and / or recombination should be regarded as equivalent solutions of the present application.

[0140] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other aspects without departing from the scope of the present application. Therefore, the present application is not intended to be limited to the aspects shown herein, but rather to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0141] The above description has been provided for the purpose of illustration and description. Furthermore, this description is not intended to limit the embodiments of the present application to the forms disclosed herein. Although a number of example aspects and embodiments have been discussed above, those skilled in the art will recognize that certain variations, modifications, alterations, additions, and sub-combinations thereof are intended to be within the scope of the present invention.

Claims

1. A flexible leveling mechanism for a lens module, characterized in that: The flexible leveling mechanism comprises: A first lens module comprises a first lens housing and a first lens mounted in the first lens housing; The second lens module includes a second lens housing and a second lens mounted on the second lens housing, wherein the second lens housing and the first lens housing are stacked along a first direction, and a first mating surface of the first lens housing facing the second lens housing in the first direction is opposite to a second mating surface of the second lens housing facing the first lens housing in the first direction; a leveling assembly installed between the first docking surface and the second docking surface; wherein the leveling assembly includes an elastic body and an adjusting member; the elastic body extends along the first direction, with two ends of the elastic body respectively abutting the first docking surface and the second docking surface; the adjusting member is arranged along the first direction, with a first end of the adjusting member configured to move synchronously with the second docking surface along the first direction, and a second end of the adjusting member passes through the elastic body and screws into the first docking surface or a screw-in portion provided on the first docking surface, so as to implement leveling to cause the optical axis of the second lens to be parallel to the optical axis of the first lens; a fixing member fixedly mounted on the first lens housing; wherein the fixing member extends along the first direction and is provided with a waist hole arranged along the first direction; A heat sink is provided on the side of the second lens housing facing away from the first lens housing in the first direction; wherein, a second threaded hole is provided on the end of the heat sink facing the fixing member, and the heat sink is fastened to the fixing member by a fixing screw passing through the waist hole and fastened to the second threaded hole when the heat sink maintains contact with the second lens housing when the leveling is completed; the heat sink is used to elastically abut against the metal shell on which the flexible leveling mechanism is installed through a thermally conductive gel, and the thermally conductive gel is provided on the side of the heat sink facing away from the second lens housing.

2. The flexible leveling mechanism according to claim 1, characterized in that: The leveling assembly includes a first leveling assembly and a pair of second leveling assemblies; Wherein, along the first direction, the first leveling assembly and the pair of the second leveling assemblies are distributed in an isosceles triangle or an equilateral triangle between the first docking surface and the second docking surface, and the central axis of the isosceles triangle or the equilateral triangle is arranged parallel to the optical axis of the first lens; Furthermore, a projection of the first leveling component along the first direction is located on the optical axis of the first lens.

3. The flexible leveling mechanism according to claim 2, characterized in that: The second docking surface is provided with a first mounting through hole corresponding to the first leveling assembly and a second mounting through hole corresponding to the second leveling assembly; Wherein, the first mounting through hole is a circular hole; The second mounting through hole is an arc-shaped hole, and the arc-shaped hole is configured to be an arc with the circular hole as the center and the length of the arc-shaped hole from the circular hole as the curvature radius.

4. The flexible leveling mechanism according to claim 3, characterized in that: The first mounting through hole is located at an end of the second docking surface away from the second lens, and a pair of second mounting through holes are located at an end of the second docking surface facing the second lens.

5. The flexible leveling mechanism according to claim 1, characterized in that: The adjusting member includes an adjusting screw, the adjusting screw includes a nut and a stud, and the second docking surface is provided with a mounting through hole; The diameter of the nut is larger than the diameter of the mounting through hole, so that after the stud passes through the mounting through hole and the elastic body and is screwed into the first docking surface or the screw-in portion, the elastic body drives the nut and the second docking surface to move synchronously along the first direction through elastic restoring force; Alternatively, a limiting groove is provided on the circumferential wall forming the mounting through hole, and the nut is mounted on the second docking surface by axial limitation of the limiting groove, so that the nut and the second docking surface move synchronously along the first direction.

6. The flexible leveling mechanism according to claim 5, characterized in that: A support column is provided on the side of the first docking surface facing the second docking surface, and the support column extends along the first direction. The elastomer is sleeved on the outside of the support column, and the support column is provided with a first threaded hole for the stud to be screwed into. The first threaded hole extends from the end of the support column away from the first docking surface toward the first docking surface.

7. The flexible leveling mechanism according to claim 6, characterized in that: The elastic body includes a spring, and along the first direction, the height of the elastic body in the ultimate compression state is greater than the height of the support column; The length of the stud is greater than the sum of the height difference between the elastic body and the support column in a free state and the thickness of the second abutting surface, so that when the elastic body is in a free state, the stud can be screwed into the first threaded hole; wherein the length of the stud is less than the sum of the thickness of the second abutting surface, the height difference between the elastic body and the support column in the ultimate compression state, and the depth of the first threaded hole, and the height difference between the elastic body in the free state and the ultimate compression state is not greater than the depth of the first threaded hole, so that the elastic body is placed between the free state and the ultimate compression state by adjusting the screwing amount of the stud into the first threaded hole; or, The length of the stud is smaller than the sum of the thickness of the second docking surface, the height difference between the elastic body and the support column in a free state, and the depth of the first threaded hole, so that the screwing amount of the stud into the first threaded hole is adjustable.

8. A gas detection device, characterized in that: The gas detection device includes a metal shell and a flexible leveling mechanism provided inside the metal shell, wherein the flexible leveling mechanism is the flexible leveling mechanism according to any one of claims 1 to 7.

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