Fixed-distance moving ruler and microscope

Abstract

The utility model belongs to the technical field of microscopes, and discloses a fixed-distance moving ruler and a microscope, and a transverse ruler and a longitudinal ruler are both connected with a fixed-distance moving mechanism; the fixed-distance moving mechanism comprises two moving shafts; the directional moving shaft is configured to move in the chute; the adjusting assembly comprises a one-way rolling shaft and an adjusting gear, the one-way rolling shaft is connected to the directional moving shaft, movement of the directional moving shaft can drive the one-way rolling shaft to rotate, and the adjusting gear and the one-way rolling shaft can rotate synchronously; the driving part comprises a button and a pair of second connecting pieces, when the button moves towards the side close to the directional moving shaft, the included angle between the two second connecting pieces is increased, and the moving shaft moves along with the second connecting pieces and drives the directional moving shaft to move towards the side close to the button, so that an adjusting gear of the adjusting assembly rotates; and when the button moves towards one side far away from the directional moving shaft, the two moving shafts and the directional moving shaft are gradually reset. According to the utility model, accurate fixed-distance movement of the specimen can be realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to microscope technical field especially relates to a fixed distance moving ruler and microscope. BACKGROUND

[0002] Microscope is a kind of precision instrument for magnifying and observing the details of micro object, including optical microscope, polarizing microscope and other types. Among them, polarizing microscope is the essential instrument for studying and identifying the birefringent substance by using the polarization characteristics of light, and is widely used in the fields including mineral, polymer, fiber, glass, semiconductor and chemistry. For example, in the process of using polarizing microscope to study rock thin section, especially when rock thin section is submitted for archiving, the whole thin section needs to be scanned and photographed to form an electronic thin section panorama, but limited by the field of view of microscope, the rock thin section needs to be moved for shooting by microscope moving ruler, and overlapping parts are reserved to facilitate later picture splicing.

[0003] The existing microscope moving ruler is usually composed of a transverse ruler and a longitudinal ruler perpendicular to each other, and a knob nut for controlling movement. The specimen (such as rock thin section) to be observed is installed on the transverse ruler. When the specimen needs to be moved, the knob nut is manually rotated to drive the movement of the transverse ruler and the longitudinal ruler, so that the specimen moves in the transverse and longitudinal directions. However, the amount of rotation each time is difficult to accurately control when manually rotating the knob nut, resulting in that the specimen cannot be accurately moved at a fixed distance. This problem of inaccurate control is particularly evident when the panorama of the specimen needs to be spliced, and the positioning error directly affects the splicing accuracy.

[0004] Therefore, it is urgent to provide a fixed distance moving ruler and microscope to solve the above technical problems. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a fixed distance moving ruler and microscope, which can accurately move the specimen at a fixed distance.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] In the first aspect, the utility model provides a fixed distance moving ruler, which comprises a fixed distance moving mechanism, a transverse ruler and a longitudinal ruler perpendicular to each other, the transverse ruler and the longitudinal ruler are connected with the fixed distance moving mechanism; the fixed distance moving mechanism comprises:

[0008] Two moving shafts;

[0009] A directional moving shaft, the directional moving shaft and the two moving shafts are respectively located at three corners of a triangle, a first connecting member is arranged between each moving shaft and the directional moving shaft, one end of the first connecting member is rotationally connected to the directional moving shaft, and the other end is rotationally connected to the moving shaft, and the directional moving shaft is configured to move in a sliding groove;

[0010] An adjusting assembly, including a one-way roller and an adjusting gear, the one-way roller is connected to the directional moving shaft through a connecting rod mechanism, movement of the directional moving shaft can drive the one-way roller to rotate, and the adjusting gear is connected to the one-way roller and can rotate synchronously with the one-way roller;

[0011] A driving part is arranged on a side of the directional moving shaft away from the adjusting assembly, the driving part includes a button and a pair of second connecting members with variable included angles, the button is arranged at a connection between the two second connecting members, and one end of the second connecting member away from the button is rotationally connected to the moving shaft; when the button moves to a side close to the directional moving shaft, the included angle between the two second connecting members increases, the moving shaft moves together with the second connecting members, and drives the directional moving shaft to move to a side close to the button, so that the adjusting gear of the adjusting assembly rotates; when the button moves to a side away from the directional moving shaft, the included angle between the two second connecting members decreases, and the two moving shafts and the directional moving shaft are gradually reset;

[0012] For the horizontal ruler, the adjusting gear is configured to mesh with first teeth of the horizontal ruler to drive the horizontal ruler to move horizontally; and for the vertical ruler, the adjusting gear is configured to mesh with second teeth of the vertical ruler to drive the vertical ruler to move vertically.

[0013] In some embodiments, the fixed-distance moving mechanism further includes a fixed shaft and an elastic member, the fixed shaft is arranged between the directional moving shaft and the button, one end of the elastic member is connected to the fixed shaft, and the other end of the elastic member is connected to the button, and when the button moves to a side close to the directional moving shaft, the elastic member is compressed.

[0014] In some embodiments, the two moving shafts are located on opposite sides of the fixed shaft, and a third connecting member is connected between each moving shaft and the fixed shaft.

[0015] In some embodiments, the linkage mechanism comprises a first linkage and a second linkage, one end of the first linkage and one end of the second linkage are rotatably connected, the other end of the first linkage is connected to the directional moving shaft, the other end of the second linkage is connected to the one-way roller, and the sum of the lengths of the first linkage and the second linkage is greater than the distance from the center of the one-way roller to the bottom of the chute.

[0016] In some embodiments, a transmission assembly is arranged between the one-way roller and the adjusting gear, the transmission assembly comprises a driving shaft, a driven shaft, a first gear set and a second gear set, the driving shaft is connected to the one-way roller, the first gear set is sleeved and connected to the driving shaft, and the second gear set is sleeved and connected to the driven shaft; the first gear set and the second gear set each comprise a first gear, a second gear and a third gear, the diameters of the first gear, the second gear and the third gear satisfy the relationship: the first gear > the second gear > the third gear, the first gear on the driving shaft is configured to be in transmission connection with the third gear on the driven shaft, the second gear on the driving shaft is configured to be in transmission connection with the second gear on the driven shaft, the third gear on the driving shaft is configured to be in transmission connection with the first gear on the driven shaft, and the adjusting gear is configured to be in transmission connection with one of the first gear, the second gear and the third gear on the driven shaft.

[0017] In some embodiments, the first gear, the second gear and the third gear are arranged at equal intervals.

[0018] In some embodiments, the first gear, the second gear and the third gear on the driving shaft are arranged at equal intervals with a first interval distance, the first interval distance is less than a second interval distance, and the first gear, the second gear and the third gear on the driven shaft are arranged at equal intervals with the second interval distance.

[0019] In some embodiments, a reverse displacement adjuster is arranged between the transmission assembly and the adjusting gear, the reverse displacement adjuster comprises a fourth gear and a reverse knob, the fourth gear is configured to be in meshing transmission with one of the first gear, the second gear and the third gear on the driven shaft, and the reverse knob comprises a reverse gear, the reverse knob has a first position and a second position, when the reverse knob is in the first position, the reverse gear is in transmission connection between one of the first gear, the second gear and the third gear on the driven shaft and the adjusting gear, and when the reverse knob is in the second position, the reverse gear is in transmission connection between the fourth gear and the adjusting gear.

[0020] In some embodiments, the reverse knob further comprises a guide rail and a housing, the reverse gear part is arranged in the housing, the housing is slidingly connected to the guide rail, and opposite ends of the guide rail are the first position and the second position respectively.

[0021] In a second aspect, the utility model provides a microscope, including the fixed distance movement ruler of first aspect.

[0022] The utility model discloses beneficial effects:

[0023] The fixed distance movement ruler provided by the utility model has the advantages that the fixed distance movement mechanism is arranged, a button is used to replace a traditional knob nut, the moving distance of the corresponding horizontal ruler or vertical ruler is a fixed value when the user presses the button once, the specimen is accurately moved at a fixed distance, the precision of specimen movement is improved, and the observation accuracy of the specimen is improved.

[0024] The microscope provided by the utility model has the advantages that the fixed distance movement ruler is used, the operator can accurately move the specimen at a fixed distance during microscopic observation, and the efficiency of microscopic operation and the reliability of observation results are improved. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical scheme in the embodiments of the utility model, the drawings needed to be used in the description of the embodiments of the utility model will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained according to the contents of the embodiments of the utility model and the drawings by those skilled in the art without creating labor.

[0026] Figure 1 It is the structure schematic diagram of the fixed distance movement ruler provided by the embodiments of the utility model.

[0027] Figure 2 It is the structure schematic diagram of the fixed distance movement mechanism provided by the embodiments of the utility model.

[0028] Figure 3 It is the structure schematic diagram of the one-way roller provided by the embodiments of the utility model.

[0029] Figure 4 It is the structure schematic diagram of the transmission assembly provided by the embodiments of the utility model.

[0030] Figure 5 It is the assembly schematic diagram of the reverse displacement adjuster provided by the embodiments of the utility model.

[0031] In the drawings:

[0032] 100, fixed distance movement mechanism;

[0033] 200, transverse ruler; 210, first tooth;

[0034] 300, longitudinal ruler; 310, second tooth;

[0035] 1, moving shaft;

[0036] 2, directional moving shaft;

[0037] 3, adjusting assembly; 31, one-way roller; 32, adjusting gear;

[0038] 4, driving part; 41, button; 42, second connecting piece;

[0039] 5, fixed shaft;

[0040] 6, elastic piece;

[0041] 7, transmission assembly; 71, driving shaft; 72, driven shaft; 73, first gear set; 731, first gear; 732, second gear; 733, third gear; 74, second gear set;

[0042] 8, reverse displacement adjuster; 81, fourth gear; 82, reverse knob; 821, reverse gear; 822, guide rail; 823, housing;

[0043] 10, first connecting piece; 20, sliding groove; 30, connecting rod mechanism; 301, first connecting rod; 302, second connecting rod; 40, third connecting piece. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0045] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0046] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0047] In the description of the utility model, it needs to explain, the term "upper", "lower", "left", "right", "vertical", "horizontal", "internal", "external" and so on indicate the orientation or position relation is based on the orientation or position relation shown in the drawing, or is the orientation or position relation of the utility model product when using usually, just is for the convenience of describing the utility model and simplifying the description, and not indicate or imply the device or element must have the specific orientation, with specific orientation structure and operation, therefore can not be understood as the limitation to the utility model. In addition, the term "first", "second", "third" and so on are only used for distinguishing description, and can not be understood as indicating or implying relative importance. In the description of the utility model, unless otherwise specified, the meaning of "a plurality of" is two or more than two.

[0048] In the description of the utility model, it also needs to explain, unless otherwise specified and limited, the term "set", "connect" should be broad sense, for example, can be fixedly connected, can be detachably connected, or integrally connected, can be mechanically connected, or electrically connected. For ordinary skilled in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to the specific circumstances.

[0049] In the utility model, unless otherwise specified and limited, the first feature is "on" or "under" the second feature can include that the first and second features are in direct contact, or the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "under", "below" and "under" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0050] The embodiments of the utility model are described in detail below, and the examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary, only for explaining the utility model, and can not be understood as the limitation of the utility model.

[0051] As Figures 1-3As shown, the fixed-distance moving ruler provided in this embodiment includes a fixed-distance moving mechanism 100, a horizontal ruler 200 and a vertical ruler 300 that are perpendicular to each other. The specimen to be observed is mounted on the horizontal ruler 200. When the horizontal ruler 200 moves horizontally, it can drive the specimen to move horizontally. When the vertical ruler 300 moves vertically, it can drive the specimen to move vertically. The linkage between the horizontal ruler 200 and the vertical ruler 300 is a mature prior art in this field, and the principle of driving the specimen movement will not be described in detail here.

[0052] like Figure 1 As shown, both the horizontal ruler 200 and the vertical ruler 300 are connected to a fixed-distance moving mechanism 100. The fixed-distance moving mechanism 100 enables both the horizontal ruler 200 and the vertical ruler 300 to achieve a fixed displacement.

[0053] The fixed-distance moving mechanism 100 includes two moving shafts 1, a directional moving shaft 2, an adjustment component 3, and a drive unit 4.

[0054] The directional moving shaft 2 and the two moving shafts 1 are located at the three corners of a triangle. A first connecting member 10 is provided between each moving shaft 1 and the directional moving shaft 2. One end of the first connecting member 10 is rotatably connected to the directional moving shaft 2, and the other end is rotatably connected to the moving shaft 1. The directional moving shaft 2 is configured to move within the slide groove 20. The first connecting member 10 can be a connecting rod. The slide groove 20 can be provided on the mounting base (not shown in the figure) of the fixed-distance moving mechanism 100.

[0055] The adjustment assembly 3 includes a one-way roller 31 and an adjustment gear 32. The one-way roller 31 is connected to the directional moving shaft 2 through a linkage mechanism 30. The movement of the directional moving shaft 2 can drive the one-way roller 31 to rotate. The adjustment gear 32 is connected to the one-way roller 31 and can rotate synchronously with the one-way roller 31.

[0056] The drive unit 4 is located on the side of the directional moving shaft 2 away from the adjusting assembly 3. The drive unit 4 includes a button 41 and a pair of second connecting members 42 with variable angles. The button 41 is located at the connection point of the two second connecting members 42, and the end of the second connecting member 42 away from the button 41 is rotatably connected to the moving shaft 1. When the button 41 moves towards the side closer to the directional moving shaft 2, the angle between the two second connecting members 42 increases, and the moving shaft 1 moves together with the second connecting members 42, driving the directional moving shaft 2 to move towards the side closer to the button 41, so that the adjusting gear 32 of the adjusting assembly 3 rotates; when the button 41 moves away from the side of the directional moving shaft 2, the angle between the two second connecting members 42 decreases, and both moving shafts 1 and the directional moving shaft 2 gradually return to their original positions. The second connecting member 42 can be configured as a connecting rod.

[0057] For the transverse ruler 200, the adjusting gear 32 is configured to mesh with the first tooth 210 of the transverse ruler 200 to drive the transverse ruler 200 to move laterally; for the longitudinal ruler 300, the adjusting gear 32 is configured to mesh with the second tooth 310 of the longitudinal ruler 300 to drive the longitudinal ruler 300 to move longitudinally.

[0058] In order to clearly describe the technical solution, Figure 1 The fixed-distance moving mechanism 100 connected to the horizontal ruler 200 is used as an example for explanation. The operation process of the fixed-distance moving mechanism 100 connected to the vertical ruler 300 is the same as the following explanation, except that the orientation is different, and will not be repeated in the text.

[0059] like Figure 1 As shown, when the horizontal ruler 200 needs to move, the operator presses button 41 upwards. The upward movement of button 41 increases the angle between the two second connecting parts 42, thereby driving the moving shaft 1 at the end of the second connecting parts 42 to move together. When the angle between the two second connecting parts 42 increases, the movement path of the two moving shafts 1 is a curve, that is, the two moving shafts 1 separate from each other in the horizontal direction and decrease in height in the vertical direction. The movement of the two moving shafts 1 further drives the directional moving shaft 2 to move downwards through the first connecting part 10. The downward movement of the directional moving shaft 2 is transmitted to the adjusting component 3 through the linkage mechanism 30, causing the one-way roller 31 to rotate counterclockwise and drive the adjusting gear 32 to rotate counterclockwise. Since the adjusting gear 32 meshes with the first tooth 210 of the horizontal ruler 200, the counterclockwise rotation of the adjusting gear 32 causes the horizontal ruler 200 to move to the left. Since the directional moving shaft 2 moves within the slide groove 20, the lowest point it can reach when moving downwards is the bottom of the slide groove 20. When the directional moving shaft 2 reaches the bottom of the slide groove 20 and stops moving, the adjusting gear 32 will also stop rotating, and the horizontal ruler 200 will stop translating. At this time, the operator can no longer press the button 41 upwards, so the button 41 is reset downwards. When the button 41 is down, the included angle between the two second connecting parts 42 gradually decreases, and both moving shafts 1 and the directional moving shaft 2 gradually reset to their initial positions. When the directional moving shaft 2 resets upwards, under the action of the one-way roller 31, the adjusting gear 32 will not reverse and the horizontal ruler 200 will not retract to the right. At this point, button 41 has moved upward and reset downward once, causing the horizontal ruler 200 to translate once. Repeating the above-mentioned upward movement and downward reset of button 41 can cause the horizontal ruler 200 to translate again. Furthermore, due to the cooperation of the directional movement shaft 2 and the slide 20, the movement distance of the horizontal ruler 200 is equal each time, that is, fixed-distance movement is achieved.

[0060] The distance moving ruler provided by the embodiment is characterized in that the distance moving mechanism 100 is arranged, the button 41 is arranged instead of the traditional knob nut, the distance of the corresponding horizontal ruler 200 or vertical ruler 300 is a fixed value when the button 41 is pressed once by the user, and the sample is accurately moved by a fixed distance, thereby improving the accuracy of the sample movement and the observation accuracy of the sample.

[0061] As shown in Figure 2 some embodiments, the distance moving mechanism 100 further comprises a fixed shaft 5 and an elastic member 6, the fixed shaft 5 is arranged between the directional moving shaft 2 and the button 41, one end of the elastic member 6 is connected to the fixed shaft 5, the other end of the elastic member 6 is connected to the button 41, and the elastic member 6 is compressed when the button 41 moves to the side close to the directional moving shaft 2. Here, the distance moving mechanism 100 connected to the horizontal ruler 200 is taken as an example for description, when the button 41 is pressed upward, the elastic member 6 is compressed to accumulate elastic potential energy, and when the pressing force of the button 41 is removed, the elastic member 6 automatically returns to the original state due to the accumulated elastic potential energy, and the button 41 automatically returns to the original position.

[0062] Through such an arrangement, the button 41 can automatically return to the original position under the action of the elastic member 6, without the need to apply a resetting force to the button 41, thereby simplifying the operation steps and improving the movement efficiency of the horizontal ruler 200 and the vertical ruler 300.

[0063] Optionally, the elastic member 6 can be a coil spring, a spring sheet or the like, which is not limited in detail.

[0064] Further, as shown in Figure 2 the two moving shafts 1 are located on the opposite sides of the fixed shaft 5, and the third connecting member 40 is connected between each moving shaft 1 and the fixed shaft 5. Such an arrangement is conducive to improving the structural stability of the distance moving mechanism 100 as a whole.

[0065] The third connecting member 40 can be a connecting rod.

[0066] As shown in Figure 2 some embodiments, the connecting rod mechanism 30 comprises a first connecting rod 301 and a second connecting rod 302, the first connecting rod 301 and the second connecting rod 302 are rotatably connected between one end of the first connecting rod 301 and one end of the second connecting rod 302, the other end of the first connecting rod 301 is connected to the directional moving shaft 2, the other end of the second connecting rod 302 is connected to the one-way roller shaft 31, and the sum of the lengths of the first connecting rod 301 and the second connecting rod 302 is greater than the distance from the center of the one-way roller shaft 31 to the bottom of the sliding groove 20.

[0067] For example, Figure 1For example, the orientation of the distance moving mechanism 100 connected with the lateral ruler 200, the bottom of the sliding groove 20 is the lowest point that the downward moving directional moving shaft 2 can reach, then the length of the first connecting rod 301 and the second connecting rod 302 is greater than the distance from the center of the one-way roller 31 to the bottom of the sliding groove 20, so that the first connecting rod 301 and the second connecting rod 302 are always on the left side of the connecting line from the center of the one-way roller 31 to the bottom of the sliding groove 20, avoiding the sudden change of the movement direction of the one-way roller 31 affecting the distance moving of the sample during the operation of the distance moving mechanism 100.

[0068] As shown in Figure 4 In some embodiments, a transmission assembly 7 is arranged between the one-way roller 31 and the adjusting gear 32, the transmission assembly 7 includes a driving shaft 71, a driven shaft 72, a first gear set 73 and a second gear set 74, the driving shaft 71 is connected to the one-way roller 31, the first gear set 73 is sleeved and connected to the driving shaft 71, and the second gear set 74 is sleeved and connected to the driven shaft 72. The first gear set 73 and the second gear set 74 each include a first gear 731, a second gear 732 and a third gear 733, and the diameter size relationship of the first gear 731, the second gear 732 and the third gear 733 is: the first gear 731> the second gear 732> the third gear 733, the first gear 731 on the driving shaft 71 is configured to be in transmission connection with the third gear 733 on the driven shaft 72, the second gear 732 on the driving shaft 71 is configured to be in transmission connection with the second gear 732 on the driven shaft 72, the third gear 733 on the driving shaft 71 is configured to be in transmission connection with the first gear 731 on the driven shaft 72, and the adjusting gear 32 is configured to be in transmission connection with one of the first gear 731, the second gear 732 and the third gear 733 on the driven shaft 72.

[0069] When the first gear 731 on the driving shaft 71 is in meshing transmission with the third gear 733 on the driven shaft 72, since the size of the first gear 731 is greater than that of the third gear 733, such cooperation will increase the rotating speed of the third gear 733 on the driven shaft 72, thereby increasing the rotating speed of the adjusting gear 32, and finally enabling the lateral ruler 200 and the longitudinal ruler 300 to move faster, which is suitable for the case that the objective lens has a smaller magnification. Conversely, when the objective lens has a larger magnification, the third gear 733 on the driving shaft 71 is in transmission connection with the first gear 731 on the driven shaft 72, so as to slow down the moving speed of the lateral ruler 200 and the longitudinal ruler 300, which is suitable for fine adjustment when the objective lens has a larger magnification.

[0070] Through such arrangement, the distance moving ruler can realize fast distance moving when observing the object under different magnifications.

[0071] Exemplarily, the diameter of the first gear 731 is 1.5 cm, the diameter of the second gear 732 is 1 cm, and the diameter of the third gear 733 is 0.5 cm.

[0072] As shown in FIG. 7, in some embodiments, the first gear 731, the second gear 732, and the third gear 733 are arranged at equal intervals. Figure 4 In this way, the installation of the first gear set 73 and the second gear set 74 is facilitated.

[0073] As shown in FIG. 7, in some embodiments, the first gear 731, the second gear 732, and the third gear 733 on the driving shaft 71 are arranged at equal intervals with a first interval distance, and the first gear 731, the second gear 732, and the third gear 733 on the driven shaft 72 are arranged at equal intervals with a second interval distance, the first interval distance being smaller than the second interval distance. Figure 4 Through such an arrangement, when any gear on the driving shaft 71 meshes with the corresponding gear on the driven shaft 72 for transmission, the remaining gears not involved in the transmission connection can not interfere with each other.

[0074] Exemplarily, the first interval distance is set to 1 cm, and the second interval distance is set to 1.5 cm.

[0075] It should be noted that a driving member (such as a motor) can be provided to drive the driving shaft 71 or the driven shaft 72 to move axially to achieve different gear combinations in different magnification conditions.

[0076] As shown in FIG. 7, the first gear 731 on the driving shaft 71 meshes with the third gear 733 on the driven shaft 72 for transmission, at this time, the driven shaft 72 rotates at a relatively high speed, which is suitable for a case where the magnification of the objective lens is small; when the magnification of the objective lens is increased, the motor can be started to drive the driven shaft 72 to move leftward until the second gear 732 on the driving shaft 71 meshes with the second gear 732 on the driven shaft 72 for transmission, at this time, the driven shaft 72 rotates at a moderate speed, which is suitable for a case where the magnification of the objective lens is moderate; when the magnification of the objective lens is further increased, the motor drives the driven shaft 72 to further move leftward until the third gear 733 on the driving shaft 71 meshes with the first gear 731 on the driven shaft 72 for transmission, at this time, the driven shaft 72 rotates at a further reduced speed, which is suitable for fine adjustment when the magnification of the objective lens is large. Figure 4 As shown in FIG. 7, in some embodiments, the first gear 731, the second gear 732, and the third gear 733 are arranged at equal intervals.

[0077] Figure 5 ​As shown, in some embodiments, a reverse displacement adjuster 8 is provided between the transmission assembly 7 and the adjusting gear 32. The reverse displacement adjuster 8 includes a fourth gear 81 and a reverse knob 82. The fourth gear 81 is configured to mesh with one of the first gear 731, the second gear 732, and the third gear 733 on the driven shaft 72. The reverse knob 82 includes a reverse gear 821 and has a first position and a second position. When the reverse knob 82 is in the first position, the reverse gear 821 is driven between one of the first gear 731, the second gear 732, and the third gear 733 on the driven shaft 72 and the adjusting gear 32. When the reverse knob 82 is in the second position, the reverse gear 821 is driven between the fourth gear 81 and the adjusting gear 32.

[0078] by Figure 5 Taking the orientation of the gear as an example, in the diagram, the reversing knob 82 is in the first position. The gear located in the upper left position is one of the first gear 731, second gear 732, and third gear 733 on the driven shaft 72 (i.e., a gear in the second gear set 74). When it rotates clockwise, the fourth gear 81 rotates counterclockwise, and the reversing gear 821 rotates counterclockwise, thus causing the adjusting gear 32 to rotate clockwise. When the reversing knob 82 is switched from the first position to the second position, the reversing gear 821 is connected between the fourth gear 81 and the adjusting gear 32. At this time, since the fourth gear 81 rotates counterclockwise, the reversing gear 821 rotates clockwise, ultimately causing the adjusting gear 32 to rotate counterclockwise. In this way, switching the position of the reversing knob 82 can reverse the rotation direction of the adjusting gear 32, thereby enabling the horizontal ruler 200 or the vertical ruler 300 to move in the opposite direction.

[0079] By setting the reverse displacement adjuster 8, the direction change when the fixed-distance moving ruler drives the specimen movement is made more flexible, thereby improving observation efficiency. For example, if it is necessary to obtain multiple rows of images of the specimen along the horizontal direction, the specimen is first moved horizontally by the horizontal ruler 200 until it reaches the edge along the horizontal direction to obtain the first row of images. Then, the specimen is moved vertically by the vertical ruler 300 by one unit, and the reverse displacement adjuster 8 is activated so that the horizontal ruler 200 moves in the opposite direction to the direction of the first row of images. This allows the specimen to move in the opposite direction along the horizontal direction to obtain the second row of images. By repeating this process, multiple rows of images of the specimen along the horizontal direction can be obtained.

[0080] like Figure 5 As shown, in some embodiments, the reversing knob 82 further includes a guide rail 822 and a housing 823. The reversing gear 821 is partially disposed within the housing 823, and the housing 823 is slidably connected to the guide rail 822. The two opposite ends of the guide rail 822 are respectively a first position and a second position. With this arrangement, the guide rail 822 provides effective guidance for the movement of the reversing gear 821.

[0081] In the orientation shown in FIG. 8A, the left end of the guide rail 822 is the first position, and the right end of the guide rail 822 is the second position. Figure 5

[0082] The embodiment further provides a microscope comprising the distance-keeping moving ruler.

[0083] Obviously, the above-mentioned embodiments of the present application are only examples for clearly illustrating the present application, and are not intended to limit the implementation modes of the present application. For those skilled in the art, other different forms of changes or modifications can be made on the basis of the above description. Here, it is not necessary and impossible to enumerate all the implementation modes. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.​

Claims

1. A travelling ruler for maintaining a constant distance, characterized in that The distance moving ruler comprises a distance moving mechanism (100), a transverse ruler (200) and a longitudinal ruler (300), the transverse ruler (200) and the longitudinal ruler (300) are connected with the distance moving mechanism (100), and the distance moving mechanism (100) comprises: two moving shafts (1); a directional moving shaft (2), the directional moving shaft (2) and the two moving shafts (1) are located at three corners of a triangle respectively, a first connecting piece (10) is arranged between each moving shaft (1) and the directional moving shaft (2), one end of the first connecting piece (10) is rotationally connected to the directional moving shaft (2), and the other end is rotationally connected to the moving shaft (1), and the directional moving shaft (2) is configured to move in a sliding groove (20); an adjusting assembly (3) comprising a one-way roller (31) and an adjusting gear (32), the one-way roller (31) is connected to the directional moving shaft (2) through a connecting rod mechanism (30), movement of the directional moving shaft (2) can drive the one-way roller (31) to rotate, and the adjusting gear (32) is connected to the one-way roller (31) and can rotate synchronously with the one-way roller (31); a driving part (4) arranged on a side of the directional moving shaft (2) away from the adjusting assembly (3), the driving part (4) comprises a button (41) and a pair of second connecting pieces (42) with variable included angles, the button (41) is arranged at a connection position of the two second connecting pieces (42), and one end of the second connecting piece (42) away from the button (41) is rotationally connected to the moving shaft (1); when the button (41) moves to a side close to the directional moving shaft (2), the included angle between the two second connecting pieces (42) increases, the moving shaft (1) moves together with the second connecting piece (42), and the directional moving shaft (2) is driven to move to a side close to the button (41), so that the adjusting gear (32) of the adjusting assembly (3) rotates; when the button (41) moves to a side away from the directional moving shaft (2), the included angle between the two second connecting pieces (42) decreases, and the two moving shafts (1) and the directional moving shaft (2) are gradually reset; for the transverse ruler (200), the adjusting gear (32) is configured to mesh with first teeth (210) of the transverse ruler (200) to drive the transverse ruler (200) to move transversely; and for the longitudinal ruler (300), the adjusting gear (32) is configured to mesh with second teeth (310) of the longitudinal ruler (300) to drive the longitudinal ruler (300) to move longitudinally.

2. The distance moving ruler according to claim 1, wherein The distance moving mechanism (100) further comprises a fixed shaft (5) and an elastic member (6), the fixed shaft (5) is arranged between the directional moving shaft (2) and the button (41), one end of the elastic member (6) is connected to the fixed shaft (5), the other end of the elastic member (6) is connected to the button (41), when the button (41) moves to the side close to the directional moving shaft (2), the elastic member (6) is compressed.

3. The distance moving ruler according to claim 2, wherein, Two moving shafts (1) are arranged on opposite sides of the fixed shaft (5), and a third connecting member (40) is arranged between each moving shaft (1) and the fixed shaft (5).

4. The distance moving ruler according to claim 1, wherein, The connecting rod mechanism (30) comprises a first connecting rod (301) and a second connecting rod (302), one end of the first connecting rod (301) and one end of the second connecting rod (302) are rotatably connected, the other end of the first connecting rod (301) is connected to the directional moving shaft (2), the other end of the second connecting rod (302) is connected to the one-way roller shaft (31), and the sum of the lengths of the first connecting rod (301) and the second connecting rod (302) is greater than the distance from the center of the one-way roller shaft (31) to the bottom of the sliding groove (20).

5. The distance moving ruler according to any one of claims 1-4, wherein, A transmission assembly (7) is arranged between the one-way roller shaft (31) and the adjusting gear (32), the transmission assembly (7) comprises a driving shaft (71), a driven shaft (72), a first gear set (73) and a second gear set (74), the driving shaft (71) is connected to the one-way roller shaft (31), the first gear set (73) is sleeved and connected to the driving shaft (71), and the second gear set (74) is sleeved and connected to the driven shaft (72); the first gear set (73) and the second gear set (74) each comprise a first gear (731), a second gear (732) and a third gear (733), the diameters of the first gear (731), the second gear (732) and the third gear (733) satisfy the relationship: the first gear (731)>the second gear (732)>the third gear (733), the first gear (731) on the driving shaft (71) is configured to be in transmission connection with the third gear (733) on the driven shaft (72), the second gear (732) on the driving shaft (71) is configured to be in transmission connection with the second gear (732) on the driven shaft (72), the third gear (733) on the driving shaft (71) is configured to be in transmission connection with the first gear (731) on the driven shaft (72), and the adjusting gear (32) is configured to be in transmission connection with one of the first gear (731), the second gear (732) and the third gear (733) on the driven shaft (72).

6. The fixed-distance moving ruler according to claim 5, wherein the first gear (731), the second gear (732) and the third gear (733) are equidistantly arranged.

7. The fixed-distance moving ruler according to claim 6, wherein the first gear (731), the second gear (732) and the third gear (733) on the driving shaft (71) are equidistantly arranged at a first interval distance, and the first gear (731), the second gear (732) and the third gear (733) on the driven shaft (72) are equidistantly arranged at a second interval distance, the first interval distance being smaller than the second interval distance.

8. The fixed-distance moving ruler according to claim 5, wherein a reverse displacement adjuster (8) is arranged between the transmission assembly (7) and the adjusting gear (32), the reverse displacement adjuster (8) comprising a fourth gear (81) and a reverse knob (82), the fourth gear (81) being configured to mesh with one of the first gear (731), the second gear (732) and the third gear (733) on the driven shaft (72), the reverse knob (82) comprising a reverse gear (821), the reverse knob (82) having a first position and a second position, when the reverse knob (82) is in the first position, the reverse gear (821) is drivingly connected between the one of the first gear (731), the second gear (732) and the third gear (733) on the driven shaft (72) and the adjusting gear (32), and when the reverse knob (82) is in the second position, the reverse gear (821) is drivingly connected between the fourth gear (81) and the adjusting gear (32).

9. The fixed-distance moving ruler according to claim 8, wherein the reverse knob (82) further comprises a guide rail (822) and a housing (823), the reverse gear (821) being partially arranged in the housing (823), the housing (823) being slidingly connected to the guide rail (822), opposite ends of the guide rail (822) being the first position and the second position respectively. A fixed-distance moving ruler according to any one of claims 1-9. ​ ​ ​ 10. A microscope characterized by ​

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