Locking structure of spectrometer objective table and spectrometer

Abstract

The utility model discloses a locking structure of a spectrometer objective table, and relates to the technical field of spectrometers, the locking structure is used for fixing the position of the objective table, one end of a main shaft is provided with a center hole, the objective table is connected with a first shaft, one end of the first shaft is inserted into the center hole, and a locking ring is arranged between the first shaft and the inner side wall of the center hole; the locking ring is detachably connected with the main shaft, a plurality of locking pieces distributed in the circumferential direction are formed on the locking ring, the locking ring can generate axial movement relative to the main shaft, and the axial relative movement of the locking ring and the main shaft can drive the locking pieces to synchronously hold or loosen the first shaft. The utility model further discloses the spectrometer adopting the locking structure. When the objective table is fixed, locking pressure can be synchronously applied from multiple different directions in the circumferential direction, and the stability of the objective table in the locking and fixing process is guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of spectrometers, and in particular to a locking structure of a spectrometer stage and a spectrometer. Background Art

[0002] A spectrometer is an instrument for measuring angles. Its basic principle is to let light pass through a slit and a focusing lens to form a beam of parallel light, which enters the telescope objective lens after reflection or refraction and forms an image on the focal plane of the telescope. The deflection angles of various light rays are observed and measured through the eyepiece to obtain optical parameters, etc.

[0003] When the spectrometer is actually used, the object to be measured is generally placed on the stage. In order to ensure the best measurement effect, the height or circumferential position of the stage is generally adjusted during use, and the adjusted position needs to be fixed. When the position of the stage is adjusted in the related art, a positioning screw is generally used to press the stage axis from one side to fix the stage position. However, this fixing method is inconvenient to operate and is likely to cause the stage to tilt during the positioning and fixing process, affecting the measurement result. Utility Model Content

[0004] The present application aims to solve one of the technical problems in the related art to a certain extent. To this end, the present application provides a locking structure of a spectrometer stage and a spectrometer.

[0005] In order to achieve the above-mentioned purpose, the present application adopts the following technical solutions: a locking structure of a spectrometer stage, which is used to fix the position of the stage, a center hole is opened at one end of the main shaft, and the stage is connected to a first shaft, one end of the first shaft is inserted into the center hole and a locking ring is provided between the inner wall of the center hole, the locking ring and the main shaft are detachably connected, and a plurality of circumferentially distributed locking plates are formed on the locking ring, the locking ring can produce axial movement relative to the main shaft, and the axial relative movement of the locking ring and the main shaft can drive the plurality of locking plates to synchronously clamp or loosen the first shaft.

[0006] The technical solution is to design a locking ring and a plurality of circumferentially distributed locking plates, so that when the position of the stage is adjusted, the first axis can be clamped from multiple directions by the locking plates to fix the position of the stage. During the fixing process, the first axis is simultaneously subjected to forces in multiple directions, which can avoid tilting of the first axis and the stage caused by force in a single direction.

[0007] Furthermore, an outer wall of the locking ring is provided with an external thread, and an inner wall of the center hole is provided with an internal thread that matches the external thread, and the locking ring is threadedly connected to the spindle through the cooperation of the external thread and the internal thread. The threaded matching structure facilitates the connection between the locking ring and the spindle, and the locking effect of the thread can fix the position of the locking sheet, thereby well fixing the position of the stage.

[0008] Furthermore, a conical surface is provided on the inner side wall of the center hole, and an inclined surface is provided on the outer side wall of each locking piece. The conical surface can synchronously squeeze the inclined surfaces of multiple locking pieces when the locking ring moves relative to the main shaft in the first direction so that the locking piece can hold the first shaft tightly. When the locking ring moves relative to the main shaft in the opposite direction of the first direction, the locking piece can loosen the first shaft by its own elasticity. The synchronous movement of multiple locking pieces is achieved, so that the holding force of the locking piece when holding the first shaft is more uniform.

[0009] Furthermore, one end of the locking ring extends out of the central hole and is formed with an operating portion, which is convenient for an operator to operate the locking ring.

[0010] Furthermore, the inner wall of the locking ring and the outer wall of the first shaft fit each other, thereby ensuring the stability of the first shaft and the stage.

[0011] Furthermore, the plurality of locking sheets are evenly distributed in the circumferential direction, so that the force on the first shaft is more even during the locking process.

[0012] Furthermore, the locking plate and the locking ring are an integrated structure.

[0013] Furthermore, the locking plate and the locking ring are a split type detachable connection structure.

[0014] Furthermore, the stage is connected to the first axis via a transition plate, on which a plurality of adjustment screws for adjusting the angle of the stage are provided, the plurality of adjustment screws being evenly distributed in a circumferential direction, one end of the adjustment screw being against an end face of the stage opposite to the working face.

[0015] Furthermore, the locking ring, the first shaft and the main shaft are coaxially arranged during assembly.

[0016] A spectrometer comprises a main shaft and a stage, and also comprises any locking structure described above.

[0017] The beneficial effects produced by the spectrometer disclosed in the present application are similar to those of the above-mentioned locking structure, and will not be described in detail here.

[0018] These features and advantages of the present application will be disclosed in detail in the following specific embodiments and drawings. The best embodiments or means of the present application will be described in detail in conjunction with the drawings, but they are not intended to limit the technical solutions of the present application. In addition, there are multiple features, elements, and components that appear in each of the following texts and drawings, and different symbols or numbers are marked for convenience, but they all represent components with the same or similar structures or functions. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present application is further described below in conjunction with the accompanying drawings:

[0020] Figure 1 This is a front cross-sectional view of the overall structure of one embodiment of the utility model;

[0021] Figure 2 This is an assembly structure diagram of a stage, a spindle and a locking ring of one embodiment of the utility model;

[0022] Figure 3 This is a front cross-sectional view of the stage, the spindle and the locking ring in the assembled state of one embodiment of the utility model;

[0023] Figure 4 For this utility model Figure 3 Middle partial enlarged picture;

[0024] Figure 5 This is a structural diagram of a locking ring of one embodiment of the utility model;

[0025] Figure 6 This is an overall structural diagram of a spectrometer according to one embodiment of the present utility model.

[0026] in,

[0027] 1. Stage; 11. First axis; 12. Transition plate; 13. Adjustment screw;

[0028] 2. Spindle; 21. Center hole; 22. Internal thread; 23. Conical surface;

[0029] 3. Locking ring; 31. Locking plate; 32. External thread; 33. Operating part; 34. Inclined surface. DETAILED DESCRIPTION

[0030] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments based on the embodiments are intended to be used to explain the present application and cannot be understood as limiting the present application.

[0031] References to "one embodiment" or "an example" or "an example" in this specification mean that a particular feature, structure, or characteristic described in conjunction with the embodiment itself may be included in at least one embodiment disclosed in the present application. The appearance of the phrase "in one embodiment" in various places in the specification does not necessarily refer to the same embodiment.

[0032] See attached Figure 1-5 One of the embodiments of the utility model discloses a locking structure of a spectrometer stage 1, wherein the locking structure is used to fix the stage 1 when adjusting the height or circumferential position of the stage 1 during assembly or use. A center hole 21 is opened at one end of the main shaft 2, and the stage 1 is connected to the first shaft 11. One end of the first shaft 11 is inserted into the center hole 21 and a locking ring 3 is provided between the inner side wall of the center hole 21. The locking ring 3 and the main shaft 2 are detachably connected to facilitate the assembly and disassembly of the locking ring 3, the first shaft 11 and the main shaft 2. A plurality of circumferentially distributed locking plates 31 are formed on the locking ring 3, and the locking ring 3 can generate axial movement relative to the main shaft 2. It should be noted that the limitation here is that the locking ring 3 can generate axial movement relative to the main shaft 2, but it does not mean that the locking ring 3 can only generate axial movement relative to the main shaft 2. The axial relative movement of the locking ring 3 and the main shaft 2 can drive the plurality of locking plates 31 to synchronously clamp or release the first shaft 11.

[0033] In this embodiment, the diameter of the center hole 21 on the main shaft 2 is larger than the outer diameter of the locking ring 3, and the inner diameter of the locking ring 3 is larger than the outer diameter of the first shaft 11. During assembly, the locking ring 3 is first mounted on the first shaft 11. In the unlocked state, the first shaft 11 can rotate relative to the locking ring 3 to adjust the position of the stage 1 in the circumferential direction, and the first shaft 11 can also slide axially relative to the locking ring 3 to adjust the position of the stage 1 in the axial direction (i.e., adjust the height). Insert the locking ring 3 and one end of the first shaft 11 into the center hole 21, and fix the first shaft 11 on the main shaft 2 by screwing the locking ring 3. When the position of the stage 1 needs to be adjusted, the operator holds the first shaft 11 with one hand and loosens the locking ring 3 by screwing the locking ring 3 with the other hand to release the locking of the first shaft 11 by the locking plate 31. At this time, adjust the position of the first shaft 11 to a suitable position (adjust along the axial straight line or rotate in the circumferential direction), and screw the locking ring 3 in the reverse direction to fix the position of the adjusted first shaft 11; when fixing the position of the first shaft 11, the present embodiment is designed with a locking ring 3 and a plurality of circumferentially distributed locking plates 31, so that the first shaft 11 can be clamped from multiple directions through the locking plates 31, so that the first shaft 11 is simultaneously subjected to forces from multiple different circumferential directions.

[0034] Compared with the prior art that uses one screw to fix the position of the first axis, the tilting of the stage 1 caused by the fixing process of the stage 1 can be avoided. Of course, in order to avoid tilting, the prior art often designs multiple screws (usually 3) evenly distributed in the circumferential direction. Although this can avoid the tilting of the stage 1 during the fixing process to a certain extent, at that time, since the force of each screw is entirely dependent on the operator's own experience, it will still cause tilting. In addition, the screwing operation of multiple screws needs to be performed one by one, which is relatively cumbersome. It can be seen that in this application, by designing the structure of the locking ring 3, the operator only needs to operate the locking ring 3 to achieve the synchronous action of the locking plate 31 when fixing the first axis 11 of the stage 1. The operation is convenient, and the force on the first axis 11 is uniform, which can well ensure the stability of the first axis 11 during the fixing process.

[0035] See attached Figure 2 , 3 One embodiment of the utility model is configured as a threaded connection between the locking ring 3 and the spindle 2. The outer wall of the locking ring 3 is provided with an external thread 32, and the inner wall of the center hole 21 is provided with an internal thread 22 that matches the external thread 32. The locking ring 3 is threadedly connected to the spindle 2 through the cooperation of the external thread 32 and the internal thread 22. By screwing the locking ring 3 in different directions, the locking ring 3 can move in different directions in the axial direction relative to the spindle 2 under the action of the thread cooperation, and then the first shaft 11 can be tightened or loosened by the locking piece 31. The thread cooperation structure facilitates the detachable connection between the locking ring 3 and the spindle 2, and the position of the locking piece 31 can be fixed by the locking effect of the thread, thereby fixing the position of the stage 1 well.

[0036] In the structure of the threaded fit between the locking ring 3 and the spindle 2 mentioned above, the locking ring 3 can not only generate axial movement relative to the spindle 2, but also rotate relative to the spindle 2, so that the locking ring 3 can move axially relative to the spindle 2 under the rotation control mode. Of course, in actual use, the locking ring 3 can also be made to move axially relative to the spindle 2 through the control mode of linear motion. For example, the locking ring 3 can also be designed as a component that only moves axially relative to the spindle 2. Specifically, a component that drives the locking ring 3 to reciprocate linear motion can be added, or it can be directly designed to be controlled by the operator to press / pull so that the locking ring 3 can move in the opposite direction axially, or it can be achieved by the operator pressing / pull with a component that can drive the locking member to move in one direction.

[0037] In order to achieve a better locking effect, the side wall of the central hole 21 of the utility model is provided with a tapered surface 23, and the outer side wall of each locking piece 31 is provided with an inclined surface 34. The tapered surface 23 can synchronously squeeze the inclined surfaces 34 of multiple locking pieces 31 when the locking ring 3 moves relative to the main shaft 2 in the first direction so that the locking piece 31 can hold the first shaft 11 tightly. The locking piece 31 can loosen the first shaft 11 by its own elasticity when the locking ring 3 moves relative to the main shaft 2 in the opposite direction of the first direction. The synchronous movement of multiple locking pieces 31 is ensured, so that the holding force of the locking piece 31 when holding the first shaft 11 is more uniform, and the stability of the stage 1 during the adjustment process is ensured.

[0038] When the locking ring 3 and the main shaft 2 of the utility model adopt a threaded connection structure, in order to facilitate the observation of the screwing condition and the processing of the thread, the thread on the main shaft 2 can be set at one end close to the opening of the center hole 21, so that when the tapered surface 23 is set, the tapered surface 23 is set on the inner side of the center hole 21 (relative to the position of the thread).

[0039] See attached Figure 5 In order to facilitate the operation of the operator, one end of the locking ring 3 extends out of the center hole 21 and forms an operating portion 33. The operating portion 33 can be set as a disc structure with a diameter larger than the diameter of the locking ring 3, which can increase the rotation torque and make it easier to rotate the locking ring 3. In addition, a notch can be set at the edge of the operating portion 33, which makes it easier for the operator to hold the operating portion 33, increase the friction force, and save more effort.

[0040] In order to ensure the stability of the stage 1, the utility model sets the inner wall of the locking ring 3 and the outer wall of the first shaft 11 to fit each other. The meaning of fitting each other here is to ensure that the first shaft 11 and the locking ring 3 can be smoothly fitted and connected and the first shaft 11 can smoothly rotate or slide in the locking ring 3, and no relative shaking can occur between the two.

[0041] In order to further improve the stability of the stage 1 during the adjustment and fixing process, the multiple locking pieces 31 of one embodiment of the present invention are evenly distributed in the circumferential direction. In this way, the first shaft 11 is evenly stressed in the circumferential direction during the locking process, ensuring a more stable adjustment and locking effect.

[0042] The locking plate 31 in the present invention can be set as a structure integrated with the locking ring 3. During production, multiple evenly distributed incisions can be processed in the circumferential direction of the side wall of one end of the locking ring 3, so that the locking plate 31 disclosed in the present application is formed between two adjacent incisions. The locking plate 31 is processed to have sufficient toughness and elasticity to ensure its life under multiple uses. In this way, the integrated structure of the locking plate 31 and the locking ring 3 makes the overall structure more compact.

[0043] Of course, it is conceivable that the locking plate 31 in the present embodiment can also be configured as a separate component. Specifically, a sleeve structure can be designed at one end of the locking plate 31. When in use, the sleeve at one end of the locking plate 31 is directly sleeved on the locking ring 3. The specific locking plate 31 can also be configured to be detachably connected to the locking ring 3 (the sleeve and the locking ring 3 can be threadedly connected) to facilitate the replacement of a damaged locking plate 31.

[0044] The locking plate 31 in the present application is arranged at one end of the locking ring 3. In some possible implementations, the locking plate 31 can also be arranged in the middle position of the locking ring 3. In actual design, it is only necessary to set a protrusion on the outer wall of the locking plate, and make the protrusion contact with the side wall of the center hole. In this way, when operating the locking ring 3, the interaction between the side wall of the center hole and the protrusion structure of the outer wall of the locking plate 31 can promote the synchronous action of multiple locking plates 31, thereby achieving the technical effect to be achieved by the utility model. Through this embodiment, more possible structural forms of the locking ring 3 are provided. In actual use, adaptive selection can be made according to the convenience of production or assembly.

[0045] It should be noted that the stage 1 in the present application is not directly connected to the first axis 11, but is connected via a transition plate 12. A plurality of adjustment screws 13 for adjusting the angle of the stage 1 are provided on the transition plate 12, and the plurality of adjustment screws 13 are evenly distributed in the circumferential direction, and one end of the adjustment screw 13 is against the end surface of the stage 1 opposite to the working surface. In this way, the angle adjustment of the stage 1 can be independent of the adjustment of the height and circumferential orientation of the stage 1, so that the adjustment of the height and circumferential orientation of the stage 1 does not interfere with each other, which is more convenient.

[0046] During assembly of the utility model, the locking ring 3, the first shaft 11 and the main shaft 2 are coaxially arranged, which facilitates assembly and can avoid the tilting of the stage 1 caused by assembly problems.

[0047] See attached Figure 1 , 6 The utility model also discloses a spectrometer, including a main shaft 2 and a stage 1, and also including any of the locking structures described above. During assembly and use, when adjusting the height direction or circumferential direction of the stage 1, the locking ring 3 can well hold the first shaft 11 of the stage 1 synchronously from multiple directions, avoiding the first shaft 11 from being tilted due to the uneven application of the fixing force on the first shaft 11 during the process of fixing the stage 1, thereby causing the stage 1 to tilt, thereby ensuring the measurement accuracy of the spectrometer during measurement.

[0048] The above are only specific embodiments of the present application, but the protection scope of the present application is not limited thereto. Those skilled in the art should understand that the present application includes but is not limited to the contents described in the drawings and the above specific embodiments. Any modification that does not deviate from the functional and structural principles of the present application will be included in the scope of the claims.

Claims

1. A locking structure for a spectrometer stage, used for fixing the stage (1) on a spindle (2), characterized in that: A center hole (21) is provided at one end of the spindle (2); the stage (1) is connected to a first shaft (11); one end of the first shaft (11) is inserted into the center hole (21) and a locking ring (3) is provided between the first shaft (11) and the inner wall of the center hole (21); the locking ring (3) and the spindle (2) are detachably connected; the locking ring (3) is provided with a plurality of circumferentially distributed locking plates (31); the locking ring (3) can generate axial movement relative to the spindle (2); and the axial relative movement between the locking ring (3) and the spindle (2) can drive the plurality of locking plates (31) to synchronously clamp or release the first shaft (11).

2. The locking structure according to claim 1, characterized in that: The outer wall of the locking ring (3) is provided with an external thread (32), and the inner wall of the center hole (21) is provided with an internal thread (22) that matches the external thread (32). The locking ring (3) is threadedly connected to the main shaft (2) through the cooperation of the external thread (32) and the internal thread (22).

3. The locking structure according to claim 1 or 2, characterized in that: A conical surface (23) is provided on the inner side wall of the center hole (21), and an inclined surface (34) is provided on the outer side wall of each locking piece (31). The conical surface (23) can synchronously squeeze the inclined surfaces (34) of multiple locking pieces (31) when the locking ring (3) moves relative to the main shaft (2) in a first direction so that the locking pieces (31) hold the first shaft (11). When the locking ring (3) moves relative to the main shaft (2) in a direction opposite to the first direction, the locking pieces (31) can loosen the first shaft (11) by their own elasticity.

4. The locking structure according to claim 3, characterized in that: One end of the locking ring (3) extends out of the central hole (21) and is formed with an operating portion (33).

5. The locking structure according to claim 1, characterized in that: The inner wall of the locking ring (3) and the outer wall of the first shaft (11) fit each other.

6. The locking structure according to claim 1, characterized in that: The plurality of locking sheets (31) are evenly distributed in the circumferential direction.

7. The locking structure according to claim 1, characterized in that: The locking sheet (31) and the locking ring (3) are an integrated structure.

8. The locking structure according to claim 1, characterized in that: The loading platform (1) and the first shaft (11) are connected via a transition plate (12), and a plurality of adjustment screws (13) for adjusting the angle of the loading platform (1) are provided on the transition plate (12), and the plurality of adjustment screws (13) are evenly distributed in a circumferential direction, and one end of the adjustment screw (13) is pressed against an end face of the loading platform (1) opposite to a working face.

9. The locking structure according to claim 1, characterized in that: The locking ring (3), the first shaft (11) and the main shaft (2) are coaxially arranged during assembly.

10. A spectrometer, comprising a main shaft (2) and a stage (1), characterized in that: It also includes the locking structure according to any one of claims 1-9.

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