A small hand-operated dual-channel fluorescent light source switching mechanism

Abstract

The utility model discloses a small -size manual double -channel fluorescent light source switching mechanism belongs to fluorescent microimaging technical field, including bottom plate, still include light source module bottom plate, fluorescent light source module, PCB board, PCB board fixed frame, side plate and light source switching subassembly, the inner wall fixed connection of bottom plate's outer wall and side plate, the upper end fixed connection of light source module bottom plate has fluorescent light source module and PCB board fixed frame, and PCB board fixed frame is located fluorescent light source module front end, and the upper end fixed connection of PCB board fixed frame has PCB board, and PCB board with transmission belt fixed block between through contact cooperation electric connection, and PCB board lower extreme and light source switching subassembly are connected, and side plate is connected with light source switching subassembly. Through above -mentioned mode, positioning track, synchronous belt fixed bolster and limit block are integrated in fluorescent light source bottom plate below, and this layout is effective compression objective lens to barrel lens interval at the same time, and the system space utilization has been improved significantly.

Description

Technical Field

[0001] This utility model relates to the field of fluorescence microscopy imaging technology, specifically to a small manual dual-channel fluorescence light source switching mechanism. Background Technology

[0002] Fluorescence microscopy is an indispensable tool in modern biomedical research. It images samples by illuminating them with excitation light of a specific wavelength and detecting the fluorescence signals emitted by the samples. The key to observing different fluorescent labels lies in the switching mechanism of the fluorescence filter group (usually including an excitation filter, a dichroic mirror, and an emission filter). Currently, fluorescence light source switching mechanisms on the market are mainly divided into two categories: the first is a rotary switching mechanism, and the second is a linear switching mechanism. These mechanisms are mostly designed to achieve flexible configurations of multiple channels (three or more), but they have many shortcomings in terms of structural compactness, cost, and ease of operation.

[0003] For example, Chinese patent CN221572907U discloses a switchable multi-channel fluorescence module device. This device adopts a turntable structure, distributing multiple fluorescence lens modules on the side of the turntable. Different modules are inserted into the optical path by rotating the turntable. Although this structure has a large number of channels, the turntable occupies a large radial space, resulting in a large and complex overall module size. It also requires a precise angular positioning system, which increases the cost and makes it difficult to apply in miniaturized, low-cost microscopes.

[0004] To address the issue of large thickness in turntable / wheel structures, a linear switching mechanism has been proposed. For example, Chinese patent CN223426934U discloses an electrically driven linear actuator-type dual-channel fluorescence light source switching mechanism for microscopes. This mechanism utilizes an electrically driven linear actuator-type dual-channel fluorescence light source switching mechanism, employing a linear actuator electromagnet and a limiting block to achieve simple linear switching and accurate switching between the two light sources.

[0005] While the structure is simple, the linear actuator and guide rail design is linear, resulting in a longer stroke in one direction, which is not ideal for ultra-miniaturized devices. Therefore, space optimization is still possible. Furthermore, the cost of linear actuator electromagnets and linear guide rails is higher than that of simpler mechanical structures.

[0006] Based on this, this utility model designs a small manual dual-channel fluorescent light source switching mechanism to solve the above problems. Utility Model Content

[0007] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a small manual dual-channel fluorescent light source switching mechanism.

[0008] To achieve the above objectives, this utility model provides the following technical solution: A small manual dual-channel fluorescent light source switching mechanism includes a base plate, a light source module base plate, a fluorescent light source module, a PCB board, a PCB board mounting bracket, a side plate, and a light source switching assembly. The outer wall of the base plate is fixedly connected to the inner wall of the side plate. The fluorescent light source module and the PCB board mounting bracket are fixedly connected to the upper end of the light source module base plate. The PCB board mounting bracket is located at the front end of the fluorescent light source module. The PCB board is fixedly connected to the upper end of the PCB board mounting bracket. The PCB board and the transmission belt fixing block are electrically connected through contact points. The light source switching assembly includes a light source linear guide rail, a switching assembly, a moving assembly, a first limiting assembly, a second limiting assembly, and a tensioning assembly. The left and right ends of the light source linear guide rail are fixedly connected to the inner side of the side plate, respectively. The lower end of the light source module base plate is slidably connected to the light source linear guide rail via a slider. The switching assembly for manually switching the fluorescent light source is connected to the side plate, the moving assembly is connected to the light source module base plate, the first limiting assembly and the second limiting assembly are used to limit the light source module base plate, and both the first limiting assembly and the second limiting assembly are connected to the light source module base plate. The tensioning assembly is connected to the side plate and the moving assembly, respectively, and the moving assembly is connected to the switching assembly.

[0009] Furthermore, the switching assembly includes a pull rod, a pull rod mounting bracket, and a pull rod linear guide rail. The pull rod linear guide rail is fixedly connected to the outside of the right-end side plate. The pull rod mounting bracket is slidably connected to the pull rod linear guide rail via a slider. The pull rod is fixedly connected to the pull rod mounting bracket.

[0010] Furthermore, the moving component includes a transmission belt tensioning pulley, a transmission belt fixing block, a transmission belt pulley, a transmission belt, and an idler pulley bracket. The three sets of idler pulley brackets and the tensioning component are located at the four corners of the side plate, respectively. The three sets of idler pulley brackets are fixedly connected to the outer side of the side plate, and three sets of transmission belt pulleys are rotatably connected to the three sets of idler pulley brackets. A tensioning pulley is connected to the tensioning component. The transmission belt pulley and the tensioning pulley are connected by transmission belt. A transmission belt fixing block is fixedly connected to the transmission belt. The transmission belt is fixedly connected to the tie rod fixing bracket, and the transmission belt fixing block is fixedly connected to the lower end of the light source module base plate.

[0011] Furthermore, the first limiting component includes a positioning track and limiting blocks. The positioning track is fixedly connected to the base plate, and two sets of symmetrically distributed limiting blocks are fixedly connected to both sides of the positioning track by bolts. The two sets of limiting blocks are used to limit the maximum distance that the slider at the lower end of the base plate of the light source module can move.

[0012] Furthermore, the second limiting component includes a positioning bead, and a cylindrical groove is provided at the lower end of the base plate of the light source module. A thread is provided in the cylindrical groove, and the cylindrical groove is threadedly connected to the positioning bead. The positioning bead cooperates with the positioning track to achieve positioning.

[0013] Furthermore, guide rail clamps are installed on the sliders of the pull rod linear guide and the light source linear guide.

[0014] Furthermore, the tensioning assembly adopts an idler wheel tensioning bracket, which is detachably connected to the front outer wall of the left side plate, and a tensioning wheel is rotatably connected to the idler wheel tensioning bracket.

[0015] Furthermore, the self-tensioning adjustment assembly includes a tension adjustment block, a tension adjustment column, a spring, a connecting rod, a limiting rod, and an automatic tensioning bracket. An adjustment block moving groove, which is slidably connected to the tension adjustment block, is provided on the outer wall of the side plate. An adjustment column moving groove, which is slidably connected to the tension adjustment column, is provided at the upper end of the side plate. A limiting rod, which is slidably connected to the tension adjustment block, is fixedly connected in the adjustment block moving groove. The upper end of the tension adjustment block is fixedly connected to the tension adjustment column, and the upper end of the tension adjustment column is threaded. A spring is sleeved on the limiting rod, with one end of the spring fixedly connected to the rear end of the adjustment block moving groove and the other end of the spring fixedly connected to the rear end of the tension adjustment block. One end of the connecting rod is hinged to the tension adjustment block, and the other end of the connecting rod is hinged to the automatic tensioning bracket. One end of the automatic tensioning bracket is hinged to the side plate, and the other end of the automatic tensioning bracket is rotatably connected to the tensioning wheel.

[0016] Compared with the prior art, the advantages of this utility model are as follows: 1. The switching component and the moving component adopt a linear motion scheme, which eliminates the traditional screw and nut mechanism, thereby reducing the weight and optimizing the cost. 2. The tensioning assembly is used to enable rapid tensioning and installation of the synchronous belt pulley, improving assembly efficiency; 3. The positioning track, timing belt fixing bracket and limiting block are all integrated under the fluorescent light source base plate. This layout effectively compresses the distance between the objective lens and the tube lens, while significantly improving the system space utilization. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a perspective view of a small manual dual-channel fluorescent light source switching mechanism according to the present invention; Figure 2 This is a three-dimensional schematic diagram of a portion of the structure of this utility model; Figure 3 This is a front view of a portion of the structure of this utility model; Figure 4 This is a schematic diagram of the self-tensioning adjustment component.

[0019] The labels in the diagram represent: 1. Base plate; 2. Light source module base plate; 3. Transmission belt fixing block; 4. Fluorescent light source module; 5. PCB board; 6. PCB board fixing bracket; 7. Side plate; 8. Transmission belt pulley; 9. Transmission belt; 10. Pull rod; 11. Idler wheel bracket; 12. Pull rod fixing bracket; 13. Pull rod linear guide rail; 14. Positioning rail; 15. Limit block; 16. Positioning bead; 17. Light source linear guide rail; 18. Idler wheel tensioning bracket; 19. Self-tensioning adjustment component; 191. Tension force adjusting block; 192. Tension force adjusting column; 193. Adjusting block moving slot; 194. Adjusting column moving slot; 195. Spring; 196. Connecting rod; 197. Limit rod; 198. Automatic tensioning bracket; 20. Tensioning wheel. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0021] The terms "left," "right," "front," "back," "up," and "down" used in the following description refer to the orientation from the perspective of the front view.

[0022] Example 1: In some embodiments, please refer to the accompanying drawings. Figures 1-4 A small manual dual-channel fluorescent light source switching mechanism includes a base plate 1, a light source module base plate 2, a fluorescent light source module 4, a PCB board 5, a PCB board fixing frame 6, a side plate 7, and a light source switching assembly. The outer wall of the base plate 1 is fixedly connected to the inner wall of the side plate 7. The fluorescent light source module 4 and the PCB board fixing frame 6 are fixedly connected to the upper end of the light source module base plate 2. The PCB board fixing frame 6 is located at the front end of the fluorescent light source module 4. The PCB board 5 is fixedly connected to the upper end of the PCB board fixing frame 6. The PCB board 5 and the transmission belt fixing block 3 are electrically connected through contact. The lower end of the PCB board 5 is connected to the light source switching assembly. The side plate 7 is connected to the light source switching assembly.

[0023] The light source switching assembly includes a light source linear guide 17, a switching assembly, a moving assembly, a first limiting assembly, a second limiting assembly, and a tensioning assembly. The left and right ends of the light source linear guide 17 are fixedly connected to the inner side of the side plate 7, respectively. The lower end of the light source module base plate 2 is slidably connected to the light source linear guide 17 via a slider. The switching assembly for manually switching the fluorescent light source is connected to the side plate 7, and the moving assembly is connected to the light source module base plate 2. The first and second limiting assemblies are used to limit the movement of the light source module base plate 2. Both the first and second limiting assemblies are connected to the light source module base plate 2. The tensioning assembly is connected to the side plate 7 and the moving assembly, respectively. The moving assembly is connected to the switching assembly.

[0024] The switching assembly includes a pull rod 10, a pull rod fixing bracket 12, and a pull rod linear guide rail 13. The pull rod linear guide rail 13 is fixedly connected to the outside of the right side plate 7. The pull rod fixing bracket 12 is slidably connected to the pull rod linear guide rail 13 via a slider. The pull rod 10 is fixedly connected to the pull rod fixing bracket 12.

[0025] The tensioning assembly can be an idler wheel tensioning bracket 18 or a self-tensioning adjustment assembly 19.

[0026] The moving assembly includes a transmission belt tensioning pulley 20, a transmission belt fixing block 3, a transmission belt pulley 8, a transmission belt 9, and an idler pulley bracket 11. The three sets of idler pulley brackets 11 and the tensioning assembly are located at the four corners of the side plate 7, respectively. The three sets of idler pulley brackets 11 are fixedly connected to the outside of the side plate 7. The three sets of transmission belt pulleys 8 are rotatably connected to the three sets of idler pulley brackets 11. The tensioning assembly is connected to the tensioning pulley 20. The transmission belt pulley 8 and the tensioning pulley 20 are connected by transmission belt 9. The transmission belt fixing block 3 is fixedly connected to the transmission belt 9. The transmission belt 9 is fixedly connected to the tie rod fixing bracket 12. The transmission belt fixing block 3 is fixedly connected to the lower end of the light source module base plate 2.

[0027] The tensioning assembly uses an idler wheel tensioning bracket 18, which is detachably connected to the front outer wall of the left side plate 7. A tensioning wheel 20 is rotatably connected to the idler wheel tensioning bracket 18.

[0028] One end of the transmission belt 9 is fixedly connected to one side of the tie rod fixing frame 12, and the other end of the transmission belt 9 is fixedly connected to the other side of the tie rod fixing frame 12. The middle part of the transmission belt 9 passes through three sets of transmission pulleys 8 and one set of tensioning pulleys 20 in sequence.

[0029] The first limiting component includes a positioning track 14 and a limiting block 15. The positioning track 14 is fixedly connected to the base plate 1. Two sets of symmetrically distributed limiting blocks 15 are fixedly connected to both sides of the positioning track 14 by bolts. The two sets of limiting blocks 15 are used to limit the maximum distance of movement of the slider at the lower end of the light source module base plate 2.

[0030] The second limiting component includes a positioning bead 16. A cylindrical groove is provided at the lower end of the base plate 2 of the light source module. A thread is provided in the cylindrical groove. The cylindrical groove is threadedly connected to the positioning bead 16. The positioning bead 16 cooperates with the positioning track 14 to achieve positioning. The positioning bead 16 itself also plays a limiting role.

[0031] The lower end of the positioning bead 16 is connected to a ball bearing.

[0032] When this utility model is used, the two sets of fluorescent light source modules 4 can be used to replace different light sources and increase the coverage of the light source. The fluorescent light source module 4 can be a DM750.

[0033] In this utility model, the position of the positioning bead 16 in the cylindrical groove is adjusted so that the ball at the lower end of the positioning bead 16 abuts against the upper end of the positioning track 14. The positioning bead 16 and the positioning track 14 cooperate to achieve positioning, and the positioning bead 16 itself also plays a limiting role. The transmission belt 9 can be tensioned by adjusting the front and rear positions of the idler tensioning bracket 18; Pulling the lever 10 moves the lever fixing frame 12, which in turn moves the lever fixing frame 12 with the help of the lever linear guide rail 13. With the help of the lever linear guide rail 13, the transmission pulley 8 and the transmission belt 9, the movement of the lever fixing frame 12 moves the light source module base plate 2, thereby realizing the switching of the fluorescent light source channel.

[0034] Example 2: In some embodiments, such as Figure 1 and Figure 4 As shown, in a preferred embodiment of the present invention, the tensioning component adopts a self-tensioning adjustment component 19.

[0035] The self-tensioning adjustment assembly 19 includes a tension adjustment block 191, a tension adjustment column 192, a spring 195, a connecting rod 196, a limiting rod 197, and an automatic tensioning bracket 198. An adjustment block moving groove 193, which is slidably connected to the tension adjustment block 191, is provided on the outer wall of the side plate 7. An adjustment column moving groove 194, which is slidably connected to the tension adjustment column 192, is provided at the upper end of the side plate 7. A limiting rod 197, which is slidably connected to the tension adjustment block 191, is fixedly connected in the adjustment block moving groove 193. (Tensioning...) The upper end of the force adjusting block 191 is fixedly connected to the tension adjusting column 192. The upper end of the tension adjusting column 192 is threaded. The spring 195 is sleeved on the limiting rod 197. One end of the spring 195 is fixedly connected to the rear end of the adjusting block moving groove 193, and the other end of the spring 195 is fixedly connected to the rear end of the tension adjusting block 191. One end of the connecting rod 196 is hinged to the tension adjusting block 191, and the other end of the connecting rod 196 is hinged to the automatic tensioning bracket 198. One end of the automatic tensioning bracket 198 is hinged to the side plate 7, and the other end of the automatic tensioning bracket 198 is rotatably connected to the tensioning wheel 20.

[0036] In this invention, by adjusting the positions of the tension adjusting column 192 and the tension adjusting block 191 in cooperation with the adjusting block moving groove 193 and the adjusting column moving groove 194, the extension and retraction of the spring 195 can be adjusted, thereby controlling the elastic force of the spring 195. The limiting rod 197 limits the spring 195, and then, with the cooperation of the connecting rod 196, the tension of the automatic tensioning bracket 198 can be adjusted. After adjustment, the tension adjusting column 192 can be fixed on the adjusting column moving groove 194 by the nut. The compressed spring 195 always has elastic force on the automatic tensioning bracket 198, thereby realizing the self-tensioning function of the transmission belt 9 on the tensioning wheel 20.

[0037] Example 3: In some embodiments, as a preferred embodiment of the present invention, a guide rail clamp is installed on the slider of the pull rod linear guide 13 and the light source linear guide 17. The guide rail clamp is a mature existing technology and will not be described in detail here. The guide rail clamp is used to fix the slider and the pull rod linear guide 13, as well as the slider and the light source linear guide 17.

[0038] In this invention, when the pull rod 10 is pulled to move, the fluorescent light source channel can be switched. Then, a guide rail clamp is installed on the slider on the pull rod linear guide 13 and the light source linear guide 17. The slider and the pull rod linear guide 13, as well as the slider and the light source linear guide 17, are fixed respectively, thereby making the fluorescent light source channel more stable.

[0039] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A small manual dual-channel fluorescent light source switching mechanism, comprising a base plate (1), characterized in that: It also includes a light source module base plate (2), a fluorescent light source module (4), a PCB board (5), a PCB board mounting bracket (6), a side plate (7), and a light source switching assembly. The outer wall of the base plate (1) is fixedly connected to the inner wall of the side plate (7). The upper end of the light source module base plate (2) is fixedly connected to the fluorescent light source module (4) and the PCB board mounting bracket (6). The PCB board mounting bracket (6) is located at the front end of the fluorescent light source module (4). The upper end of the PCB board mounting bracket (6) is fixedly connected to the PCB board (5). The PCB board (5) and the transmission belt fixing block (3) are electrically connected through contact points. The light source switching assembly includes a light source linear guide rail (17), a switching assembly, a moving assembly, a first limiting assembly, a second limiting assembly, and a tensioning assembly. The left and right ends of the light source linear guide rail (17) are fixedly connected to the inner side of the side plate (7). The lower end of the light source module base plate (2) is limited and slidably connected to the light source linear guide rail (17) through a slider. The switching assembly for manually switching the fluorescent light source is connected to the side plate (7). The moving assembly is connected to the light source module base plate (2). The first limiting assembly and the second limiting assembly are used to limit the light source module base plate (2). Both the first limiting assembly and the second limiting assembly are connected to the light source module base plate (2). The tensioning assembly is connected to the side plate (7) and the moving assembly respectively. The moving assembly is connected to the switching assembly.

2. The small manual dual-channel fluorescent light source switching mechanism according to claim 1, characterized in that, The switching assembly includes a pull rod (10), a pull rod fixing bracket (12), and a pull rod linear guide (13). The pull rod linear guide (13) is fixedly connected to the outside of the right side plate (7). The pull rod fixing bracket (12) is slidably connected to the pull rod linear guide (13) through a slider. The pull rod (10) is fixedly connected to the pull rod fixing bracket (12).

3. The small manual dual-channel fluorescent light source switching mechanism according to claim 2, characterized in that, The moving component includes a transmission belt tensioning pulley (20), a transmission belt fixing block (3), a transmission pulley (8), a transmission belt (9), and an idler bracket (11). The three idler brackets (11) and the tensioning component are located at the four corners of the side plate (7). The three idler brackets (11) are fixedly connected to the outside of the side plate (7). The three idler brackets (11) are rotatably connected to the three transmission pulleys (8). The tensioning component is connected to the tensioning pulley (20). The transmission pulley (8) and the tensioning pulley (20) are connected by transmission through the transmission belt (9). The transmission belt fixing block (3) is fixedly connected to the transmission belt (9). The transmission belt (9) is fixedly connected to the tie rod fixing bracket (12). The transmission belt fixing block (3) is fixedly connected to the lower end of the light source module base plate (2).

4. The small manual dual-channel fluorescent light source switching mechanism according to claim 1, characterized in that, The first limiting component includes a positioning track (14) and a limiting block (15). The positioning track (14) is fixedly connected to the base plate (1). Two sets of symmetrically distributed limiting blocks (15) are fixedly connected to both sides of the positioning track (14) by bolts. The two sets of limiting blocks (15) are used to limit the maximum distance of movement of the slider at the lower end of the light source module base plate (2).

5. The small manual dual-channel fluorescent light source switching mechanism according to claim 4, characterized in that, The second limiting component includes a positioning bead (16). A cylindrical groove is provided at the lower end of the base plate (2) of the light source module. A thread is provided in the cylindrical groove. The cylindrical groove is threadedly connected to the positioning bead (16). The positioning bead (16) cooperates with the positioning track (14) to achieve positioning.

6. The small manual dual-channel fluorescent light source switching mechanism according to claim 2, characterized in that, Guide rail clamps are installed on the sliders of the pull rod linear guide (13) and the light source linear guide (17).

7. The small manual dual-channel fluorescent light source switching mechanism according to claim 3, characterized in that, The tensioning assembly uses an idler wheel tensioning bracket (18), which is detachably connected to the front outer wall of the side plate (7) on the left end. A tensioning wheel (20) is rotatably connected to the idler wheel tensioning bracket (18).

8. The small manual dual-channel fluorescent light source switching mechanism according to claim 3, characterized in that, The self-tensioning adjustment assembly (19) includes a tension adjustment block (191), a tension adjustment column (192), a spring (195), a connecting rod (196), a limiting rod (197), and an automatic tensioning bracket (198). An adjustment block moving groove (193) is provided on the outer wall of the side plate (7) and is slidably connected to the tension adjustment block (191). An adjustment column moving groove (194) is provided at the upper end of the side plate (7) and is slidably connected to the tension adjustment column (192). A limiting rod (197) is fixedly connected in the adjustment block moving groove (193) and is slidably connected to the tension adjustment block (191). The upper end of the tension adjustment block (191) is connected to... The tension adjustment column (192) is fixedly connected. The upper end of the tension adjustment column (192) is threaded. The spring (195) is sleeved on the limit rod (197). One end of the spring (195) is fixedly connected to the rear end of the adjustment block moving groove (193). The other end of the spring (195) is fixedly connected to the rear end of the tension adjustment block (191). One end of the connecting rod (196) is hinged to the tension adjustment block (191). The other end of the connecting rod (196) is hinged to the automatic tension bracket (198). One end of the automatic tension bracket (198) is hinged to the side plate (7). The other end of the automatic tension bracket (198) is rotatably connected to the tension wheel (20).

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